sems-rm docid # 1164448 san fernando valley superfund site · 2020. 11. 18. · action plan...

Honeywell

2525 West 190th Street

Torrance, CA 90505

310-512-2296

June 5, 2012

Mr. Matt Salizar U.S. Environmental Protection Agency, Region 9 75 Hawthorne Street San Francisco, California 94105

Honeywell

Subject: Pre-Design Investigation Report for NHE-2 Long-Term Treatment Former Bendix Facility North Hollywood Operable Unit San Fernando Valley Superfund Site

Dear Ms. Manheimer:

Honeywell International Inc. is pleased to submit the enclosed Pre-Design Investigation Report, summarizing recently collected soil and groundwater data. Should you have any questions, please feel free to contact me at (310) 512-2296.

SH JJ4! Benny Dehghi Manager, Remediation & Evaluation Services

Enclosure: Pre-Design Investigation Report

cc: John Lindquist - CH2MHill Donald Walsh - MWH

SEMS-RM DOCID # 1164448

Prepared for

Honeywell International Inc. 2525 West 190th Street

Torrance, CA

Pre-Design Investigation Report for NHE-2 Long-Term Treatment Former Bendix Facility North Hollywood Operable Unit

June 5, 2012

Pre-Design Investigation Report June 5, 2012 for NHE-2 Long-Term Treatment

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TABLE OF CONTENTS Section No. Page No. 1.0 INTRODUCTION .................................................................................... 1-1 2.0 BACKGROUND ..................................................................................... 2-1 2.1 Site Information .......................................................................... 2-1 2.2 Regulatory History ...................................................................... 2-1 3.0 FIELD ACTIVITIES ................................................................................ 3-1 3.1 Permits, Agreements, and Utility Clearance ................................ 3-1 3.2 Barcad GW-12A-319 Removal ................................................... 3-1 3.3 Soil Investigation ........................................................................ 3-1 3.3.1 Soil Sampling Procedures ................................................. 3-2 3.3.2 Soil Sample Analytical Methodology ................................. 3-2 3.4 Groundwater Monitoring Well Installation .................................... 3-3 3.4.1 Borehole Soil Sampling Procedures .................................. 3-3 3.4.2 Borehole Sampling Analytical Methodology ...................... 3-4 3.4.3 Groundwater Monitoring Well Construction ....................... 3-4 3.4.4 Well Development ............................................................. 3-4 3.4.5 Wellhead Surveying .......................................................... 3-4 3.4.6 Baseline Groundwater Monitoring Well Sampling ............. 3-5 3.4.7 Monitoring Well Sampling and Analysis ............................ 3-5 3.5 Investigation Derived Waste ....................................................... 3-6 3.6 Quality Assurance/Quality Control (QA/QC) ............................... 3-6 3.6.1 Field QA/QC Samples ....................................................... 3-6 3.6.2 Adequacy Assessment ..................................................... 3-6 3.6.3 Data Validation Summary ................................................. 3-7 3.7 Deviations ................................................................................... 3-7 4.0 RESULTS .............................................................................................. 4-1 4.1 Soil Analytical Results ................................................................ 4-1 4.2 Groundwater Analytical Results .................................................. 4-2 4.3 Discussion .................................................................................. 4-3 5.0 CONCLUSIONS ..................................................................................... 5-1 6.0 REFERENCES ...................................................................................... 6-1 Usoco1s02\Projects\Honeywell\North Hollywood\6.0\Studies & Reports\Pre-Design Investigation_NHE-2 Pre-Design\Report\FINAL Pre-Design Invest Report_060512


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LIST OF FIGURES

1 – Site Location Map 2 – New Sampling Locations 3 – Cross Section A-A’ View of Water Table 4 – Cross Section B-B’ View of Water Table 5 – Groundwater Elevation Contour Map, January 30, 2012

LIST OF TABLES

1 – Soil and Groundwater Sampling and Analysis Summary 2 – Well Construction Details 3 – Approximate Volume Removed During Well Development 4 – Groundwater Elevations 5 – Soil Analytical Data – Detected Volatile Organic Compounds 6 – Soil Analytical Data – Detected Metals (Total) 7 – Soil Analytical Data – Emerging Chemicals 8 – Groundwater Analytical Data – Detected Volatile Organic Compounds 9 – Groundwater Analytical Data – Detected Metals (Dissolved) 10 – Groundwater Analytical Data – Emerging Chemicals

LIST OF APPENDICES

A – Permits B – Boring Logs C – Well Development Logs D – Survey Report E – Baseline Groundwater Sampling Logs F – Data Validation Report G – Laboratory Analytical Reports - CD


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ACRONYMS AND ABBREVIATIONS

bgs below ground surface Calscience Calscience Environmental Laboratories, Inc. CAO Cleanup and Abatement Order CDPH California Department of Public Health DCA Dichloroethane DCE Dichloroethene EC Emerging Chemicals ft msl elevation in feet relative to mean sea level gpm gallons per minute Honeywell Honeywell International Inc. J Estimated concentration that was detected above the method

detection limit, but below the method reporting limit LABOS Los Angeles Bureau of Sanitation LADWP Los Angeles Department of Water and Power MCL Maximum Contaminant Level (CDPH, 2011) µg/kg Micrograms per Kilogram µg/L Micrograms per Liter mg/kg Milligrams per Kilogram MWH MWH Americas, Inc. NDMA N-nitrosodimethylamine NHOU North Hollywood Operable Unit PCE Tetrachloroethene PVC Polyvinyl chloride QA/QC Quality Assurance/Quality Control Report Pre-Design Investigation Report for NHE-2 Long-Term Treatment ROD Record of Decision RSL Regional Screening Levels (USEPA, 2011) RWQCB Los Angeles Regional Water Quality Control Board SFV San Fernando Valley SIGRAP Soil and Interim Groundwater Remedial Action Plan Site 11600 Sherman Way, North Hollywood, California TCE Trichloroethene TCP Trichloropropane USA Underground Service Alert USEPA United States Environmental Protection Agency VOCs Volatile organic compounds WDC WDC Exploration and Wells Workplan Supplemental Investigation Workplan for NHE-2 Long-Term

Treatment


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SECTION 1.0

INTRODUCTION Honeywell International Inc. (Honeywell) currently operates a remediation system at the former Bendix Facility (Site), located at 11600 Sherman Way, North Hollywood, California (Figure 1) that treats hexavalent chromium contamination in the vadose zone and on-Site groundwater through a combination of groundwater extraction and treatment and in-situ chemical reduction. The Los Angeles Department of Water and Power (LADWP) owns and operates nearby well NHE-2, which is located downgradient of the Site. On behalf of Honeywell, MWH Americas, Inc. (MWH) submitted a Long-Term Treatment Plan North Hollywood Operable Unit Well NHE-2 to the U.S. Environmental Protection Agency (USEPA) and other agencies in March 2010. Under the proposed long-term treatment approach, groundwater from NHE-2 would be conveyed to the Site for treatment and on-Site injection. This Pre-Design investigation was completed in accordance with the USEPA-approved Supplemental Investigation Workplan for NHE-2 Long-Term Treatment (Workplan) dated October 25, 2011 (MWH, 2011). This Pre-Design Investigation Report for NHE-2 Long-Term Treatment (Report) was prepared to summarize recent field activities, including the installation of Site and off-Site groundwater monitoring wells, the measurement of groundwater levels from the newly-installed and existing monitoring wells, and soil sampling near injection trenches IT-1 and IT-2 for the purpose of:

• Improving interpretation of measured groundwater levels at the Site.

• Supporting on-going groundwater modeling to evaluate the hydraulic containment produced by the on-Site extraction wells and injection trenches under current operating conditions.

• Supporting planned groundwater modeling to evaluate the extent of hydraulic containment under the proposed approach involving routing NHE-2 groundwater to the Site for treatment and reinjection.


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SECTION 2.0

BACKGROUND

2.1 SITE INFORMATION Honeywell has been operating a soil and interim groundwater remediation system at the Site for treatment of hexavalent chromium in soil and hexavalent chromium and volatile organic compounds (VOCs) in groundwater. The technical approach includes in-situ treatment of hexavalent chromium in the subsurface through a combination of groundwater extraction and treatment and in-situ reduction. 2.2 REGULATORY HISTORY The Site and NHE-2 are both located in the North Hollywood Operable Unit (NHOU) of the San Fernando Valley (SFV) (Area 1) Superfund Site, North Hollywood, California. The SFV Area 1 Superfund Site was listed on the National Priorities List on June 10, 1984 (Comprehensive Environmental Response, Compensation, and Liability Information System Identification Number CAD980894893). In February 2003, the Los Angeles Regional Water Quality Control Board (RWQCB) issued a Cleanup and Abatement Order (CAO) to Honeywell, which required the assessment of emerging contaminants (ECs) and heavy metals (including total and hexavalent chromium) in unsaturated soil and groundwater beneath the Site. In response to the CAO, Honeywell conducted investigations and submitted a combined Soil and Interim Groundwater Remedial Action Plan (SIGRAP). The RWQCB approved the SIGRAP in April 2005. Honeywell then commenced design of the soil and interim groundwater remediation system (“Soil and Interim Groundwater Remediation System”) at the Site. In July 2006, after a year of heavy rainfall and rising groundwater levels in the Basin, concentrations of total chromium in water extracted by well NHE-2 began to increase. In early 2007, the elevated concentrations of chromium in well NHE-2 caused total chromium concentrations in the combined NHOU treatment system effluent to exceed 30 micrograms per liter (µg/L) (60 percent of the state Maximum Contaminant Level [MCL]). On September 30, 2009, USEPA issued a new Record of Decision (ROD) for the NHOU, selecting a new interim remedy for the Site ("Second Interim Remedy"). The Second Interim Remedy includes construction of new extraction wells, chromium and 1,4-dioxane treatment, expanded VOC treatment, and continued use of the treated water in LADWP's water supply system. 1,4 dioxane was used typically as a stabilizer in conjunction with VOCs. On March 19, 2007, the RWQCB amended Honeywell’s CAO in response to the elevated concentrations of hexavalent chromium detected in NHE-2. The amended CAO required an updated SIGRAP, and that Honeywell prepare a water replacement plan for NHE-2 and bring about containment using on-site extraction and in-situ methods. In April 2007, the NHOU NHE-2 Wellhead Treatment Plan was submitted to the RWQCB to serve as the water replacement plan requested in the March 2007 letter. The Plan was revised in response to agency comments and was resubmitted on January 18, 2008. The


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January 2008 Plan provided the details of a short-term treatment plan and conceptually described a long-term treatment plan. In September 2007, Honeywell submitted the Design Update to the SIGRAP for the Soil and Interim Groundwater Remediation System. The RWQCB approved the Design Update for SIGRAP on November 5, 2007. The Soil and Interim Groundwater Remediation System began operating in January 2009. Since January 2009, the system has treated an average of 5.6 million gallons of groundwater per month to less than 50 µg/L hexavalent chromium. In April 2008, the RWQCB conditionally approved the NHOU NHE-2 Wellhead Treatment Plan for short-term treatment and required Honeywell to proceed with the development and submittal of a long-term treatment plan. The conditionally approved short-term plan for well NHE-2 called for wellhead VOC treatment and modification of the discharge piping to divert chromium-contaminated water (treated for VOCs at the wellhead) to the Los Angeles Bureau of Sanitation (LABOS) sewer system rather than to the LADWP drinking water supply. Operation of well NHE-2 pursuant to the NHE-2 Treatment Plan allowed well NHE-2 to provide groundwater containment without introducing chromium-contaminated water to LADWP’s drinking water supply. NHE-2 continues to operate under a LABOS permit. On September 30, 2009, USEPA issued an Interim Action Record of Decision (ROD), prescribing a new interim remedy for the NHOU (“Second Interim Remedy”). The Second Interim Remedy includes construction of new extraction wells, chromium and 1,4 dioxane treatment, expanded VOC treatment, and continued use of the treated water in LADWP’s water supply system. The Second Interim Remedy ROD states that NHE-2 should be repaired or replaced with a deeper well, if needed, of similar construction to achieve the required hydraulic containment of the contaminated groundwater plume. The Second Interim Remedy ROD also stated that NHE-2 wellhead treatment for chromium, 1,4-dioxane, and VOCs is required. Although USEPA selected a treatment remedy for well NHE-2 in the Second Interim ROD, Honeywell remained obligated, pursuant to the CAO, to develop a long-term treatment plan for well NHE-2. Therefore, a draft NHE-2 Long-Term Treatment and Disposal Plan was submitted to the RWQCB on March 2, 2010. The draft Long-Term NHE-2 Treatment and Disposal Plan proposes conveying the water extracted at well NHE-2 to the Site for on-Site treatment, followed by on-Site reinjection. This alternative NHE-2 Treatment and Disposal Approach is intended to operate until chromium concentrations in the groundwater extracted by well NHE-2, when combined with effluent from the other NHOU extraction wells, meets the Second Interim ROD’s performance standards for chromium. This approach considered the ROD Appendix A, Detailed Response to Technical Comments, Response Number 41, which states that “The remedial design can consider use of the existing equipment at the Site for chromium treatment.”

USEPA comments on the March 2010 Long-Term NHE-2 Treatment and Disposal Plan were focused on demonstrating hydraulic containment of the on-site plume. To address those comments, the installation of additional groundwater monitoring wells and groundwater level measurements would be necessary to verify hydraulic containment under current operating conditions and provide data that would be used to evaluate the extent of hydraulic containment under the proposed approach involving routing NHE-2 groundwater to the Site for treatment and reinjection. In addition, USEPA requested Site soil sampling near existing injection trenches.


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SECTION 3.0

FIELD ACTIVITIES

Field activities for soil boring and groundwater monitoring well installation were performed between October and December 2011. Field activities took place at the Site and at two off-Site locations (former 20th Century leased property at 11651 Hart Street and Andy Gump Property at 11551 Hart Street). Field activities included permitting and utility clearance, attempting Barcad removal at GW-12A, soil and groundwater sampling during drilling, groundwater well installation, well development, and groundwater sampling. Field activities were conducted in accordance with the Site-Specific Health and Safety Plan (MWH, 2008) and were performed under the direct supervision of a California-licensed professional geologist. Well installation was performed in accordance with procedures outlined in Bulletin No. 74-81, Water Well Standards: State of California, and Supplement 74-90, California Well Standards (Department of Water Resources, 1981 and 1991). 3.1 PERMITS, AGREEMENTS, AND UTILITY CLEARANCE Locations for the proposed groundwater monitoring wells were confirmed based on USEPA concurrence, logistics, field conditions, overhead clearance issues and an access agreements. Well construction permits were obtained from the County of Los Angeles Department of Health Services. Copies of the permits are located in Appendix A. Underground Service Alert (USA) was notified before the start of drilling activities to mark utilities at each location (USA confirmation Numbers A12860315 and A12860323). In addition, geophysical techniques were used at each boring location to clear the borehole location of any detectable utilities. As an extra precaution, the upper 10 feet below ground surface (bgs) of each boring were cleared using air knife technologies to ensure that no utilities were present. Final well locations were modified based on field observations, USA, and geophysical clearances. 3.2 BARCAD GW-12A-284 REMOVAL Following the Workplan, MWH carefully attempted to remove the shallow 284-foot Barcad sampler from GW-12A on December 5, 2011, however, the Barcad sampler tubing was unmovable, likely a result of being jammed in place. MWH immediately stopped pulling the tubing and left the Barcad in place. The 284-foot Barcad sampler still functions as a groundwater sampling device, however, it cannot be pulled out to obtain manual water level measurements, which is a deviation from the Workplan. 3.3 SOIL INVESTIGATION Two (2) soil borings (SB-30 and SB-31) were installed at locations shown on Figure 2 to investigate subsurface impacts near trench IT-2. Originally, two additional soil borings were to be installed near trench IT-1, however, Kaiser Permanente would not allow those locations to be drilled, due to concerns that the drilling activities would impact Kaiser Permanente operations and their ability to receive samples. As a result, in a conversation with USEPA, Honeywell requested that USEPA approve deferring these soil borings, which its approval was obtained in an email dated November 17, 2011. This however remains a deviation from the Workplan. Specifically, should system operation require continued injection of water at IT-1, Honeywell would inform USEPA and discuss the need to advance


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these soil borings at that time. Honeywell received approval to defer drilling the two additional soil borings near trench IT-1 on November 17, 2011. 3.3.1 Soil Sampling Procedures Soil sample collection depths and laboratory analyses assigned for each sample are summarized in Table 1. Soil borings were advanced using a mud rotary drill rig. Drilling and soil sampling was completed by WDC Exploration and Wells (WDC), a licensed drilling contractor subcontracted by MWH. Soil samples were collected using a modified California split-spoon sampler containing three 2-inch-diameter by 6-inch-long stainless steel sample retainers, driven by a 140-pound slide hammer (approximate weight) dropped approximately 30 inches. Soil samples were collected at 10-foot intervals to 100 feet bgs and every 25-feet thereafter to 250 feet bgs. Samples were field screened using a photo-ionization detector to monitor organic vapors. Soil samples from the vadose zone were retained for laboratory analyses. Once the soil samples were removed from the sampler, soil was collected by manually pushing three En Core® sampling devices into one of the sample retainers for VOC analysis. The remaining soil sample was capped at the ends of the sample liners using Teflon sheets and caps. Soil samples were then be labeled, placed in a resealable plastic bag, entered into chain-of-custody protocol, and placed in an ice-chilled cooler. Sample handling and chain-of-custody procedures were completed in general accordance with USEPA SW-846 protocol. Each day, the coolers were picked up by a courier and delivered to Calscience Environmental Laboratories, Inc. (Calscience), a California state-certified laboratory. Samples were not obtained from every interval due to difficult drilling and sampling conditions. Soil was characterized according to the Unified Soil Classification System as presented in American Society for Testing and Materials Standard D 2488 and classified by color using a Munsell Color Chart. Blow counts was not recorded since the use of drilling mud interferes with these measurements. Soil samples were field screened using a photo-ionization detector. The headspace samples were prepared by disaggregating a portion of soil sample in a resealable plastic bag, letting the headspace equilibrate within the bag for 5 to 10 minutes, then measuring the organic vapor concentration within the headspace using the photo-ionization detector. The photo-ionization detector was calibrated to manufacturer specifications at a minimum of once per day. MWH boring logs are presented in Appendix B. All sampling equipment was cleaned using a non-phosphate detergent, rinsed with tap water, and final-rinsed with de-ionized water before entering each borehole. All equipment was handled in a manner intended to prevent cross-contamination. The soil borings were abandoned by filling with grout to just below surface grade, then capped at the surface with asphalt to match the existing surface grade. 3.3.2 Soil Sample Analytical Methodology Table 1 summarizes the soil sampling and analysis program. Unsaturated soil samples were chemically analyzed for the following:

• VOCs using USEPA Method 8260B/5035B • Hexavalent chromium using USEPA Method 7199 • Title 22 Metals using USEPA Methods 6020 (7471A for mercury)


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• 1,4-Dioxane using USEPA Method 8270C M (isotope dilution) • 1,2,3-Trichloropropane (TCP) using USEPA Method 8260B/5035B • N-nitrosodimethylamine (NDMA) using USEPA 8270C- selective ion monitoring • Perchlorate using USEPA Methods 314.0

3.4 GROUNDWATER MONITORING WELL INSTALLATION The six (6) performance monitoring wells installed at the locations shown on Figure 2 are intended to allow measurement of drawdown and gradient to demonstrate hydraulic containment of the on-Site plume. The following sections summarize the drilling, sampling, and well construction procedures. 3.4.1 Borehole Soil Sampling Procedures Soil sample collection depths and laboratory analyses assigned for each sample are summarized in Table 1. Each groundwater monitoring well borehole was advanced using an air rotary casing hammer drill rig. The drilling and soil sampling was completed by WDC, a licensed drilling contractor subcontracted by MWH. Soil samples were collected in each borehole or from the deepest well at a multiple well location. Soil samples were collected using a modified California split-spoon sampler containing three 2-inch-diameter by 6-inch-long stainless steel sample retainers and driven by a 280-pound slide hammer (approximate weight) dropped approximately 30 inches. Soil samples were collected at 10-foot intervals to total depth of the boring was achieved. Samples were field screened using a photo-ionization detector. Soil samples from the vadose zone were retained for laboratory analyses. Once the soil samples were removed from the sampler, soil was collected by manually pushing three En Core® sampling devices into one of the sample retainers for VOC analysis. The remaining soil sample was capped at the ends of the sample liners using Teflon sheets and caps. Soil samples were then be labeled, placed in a resealable plastic bag, entered into chain-of-custody protocol, and placed in an ice-chilled cooler. Sample handling and chain-of-custody procedures were completed in general accordance with USEPA SW-846 protocol. Each day, the coolers were picked up by a courier and delivered to Calscience, a California state-certified laboratory. Samples were not obtained from every interval due to difficult drilling and sampling conditions. Soil was characterized according to the Unified Soil Classification System as presented in American Society for Testing and Materials Standard D 2488 and classified by color using a Munsell Color Chart. Blow counts was collected and noted on the boring logs. Soil samples were field screened using a photo-ionization detector. The headspace samples were prepared by disaggregating a portion of soil sample in a resealable plastic bag, letting the headspace equilibrate within the bag for 5 to 10 minutes, then measuring the organic vapor concentration within the headspace using the photo-ionization detector. The photo-ionization detector was calibrated to manufacturer specifications at a minimum of once per day. MWH boring logs are presented in Appendix B. All sampling equipment was cleaned using a non-phosphate detergent, rinsed with tap water, and final-rinsed with de-ionized water before entering each borehole. All equipment was handled in a manner intended to prevent cross-contamination.


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3.4.2 Borehole Sampling Analytical Methodology Table 1 summarizes the soil sampling and analysis program. Unsaturated soil samples were chemically analyzed for the following:

• VOCs using USEPA Method 8260B/5035B • Hexavalent chromium using USEPA Method 7199 • Title 22 Metals using USEPA Methods 6020 (7471A for mercury) • 1,4-Dioxane using USEPA Method 8270C M (isotope dilution) • 1,2,3-TCP using USEPA Method 8260B/5035B • NDMA using USEPA 8270C- selective ion monitoring • Perchlorate using USEPA Methods 314.0

3.4.3 Groundwater Monitoring Well Construction Groundwater monitoring wells were installed using new flush-threaded, 4-inch- or 6-inch-diameter Schedule 80 polyvinyl chloride (PVC) casing and 0.030-inch slotted PVC screen. A flush-threaded base cap was attached to the base of each well casing and screen assembly. The wells were constructed by lowering the screen attached to casing to the desired depth and then filling the annual space between the screen and borehole wall with #2/12 filter packs around the well screen intervals, bentonite seal material, and then bentonite grout to ground surface. The surface was completed with a traffic-rated flush-mounted well vault secured in a concrete pad. Well construction details are summarized in Table 2 and shown on well completion logs included as Appendix B. 3.4.4 Well Development Well screens were developed a minimum of 48 hours after installation to allow time for the bentonite seal to set. Groundwater levels were measured and well volumes were calculated for each screened interval. The wells were bailed using a decontaminated stainless steel bailer and swabbed using a 4-inch or 6-inch swab to remove heavy sediments. Once most of the sediments were out of the well, a submersible pump was used for the remainder of the development. Development continued at each screen interval until turbidity was minimized, and all other water quality parameters stabilized with less than 10% variation for 3 consecutive readings. Upon completion of casing development, a security ‘star-type’ cap was placed on each 4-inch well casing and a traffic-rated, flush-mounted well box was installed. Approximate groundwater volumes removed during well development are summarized in Table 3 and development logs are presented in Appendix C. 3.4.5 Wellhead Surveying Newly installed groundwater monitoring wells were surveyed by a California licensed professional surveyor for wellhead and surface elevations in a State Plane NAD83 coordinate system. Well survey data is presented in Appendix D.


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3.4.6 Baseline Groundwater Monitoring Well Sampling The newly installed groundwater monitoring wells were sampled no sooner than two weeks after well development. Before sampling, groundwater levels (potentiometric surface) were measured with an electric water probe on December 21, 2011. Measurements were taken from a surveyed reference point marked on the top of the well casing. Water-levels were measured within 0.01 feet and recorded on sampling logs in Appendix E. The probe was decontaminated between wells. Wells were purged using a 2-inch diameter submersible Grundfos Redi-Flo II pump, equipped with a check valve to prevent backflow into the well. The pump was placed 3 feet below the top of the water column in all wells (except GW-33B) to collect groundwater from the uppermost saturated zone. The water table in all of these wells is located within the screened portion of the well casing. GW-33B is the only well with water above the screen; therefore, the pump was placed at 3 feet below the top of screen to ensure purge water is from the formation. A bladder pump was used to purge water in GW-33B due to the depth of the sample. During purging, groundwater quality parameters (pH, oxidation-reduction potential, electrical conductivity, temperature, dissolved oxygen, and turbidity) were measured using field water quality meters and visual observations recorded on MWH sampling data sheets to verify well stabilization (Appendix E). Instrument calibration was conducted at the beginning of each field day (and at various times throughout the day if suspect readings were noted). Wells were purged at a low flow rate (approximately 1 gallon/minute) to prevent significant drawdown (<0.5 feet), until three consecutive measurements (taken at least 5 minutes apart) of pH, temperature, and electrical conductivity were stabilized to within ±10 percent of each other. Also, turbidity was monitored to be as close to 5 nephelometric turbidity units as possible. Once the field-measured water quality parameters stabilized, baseline groundwater sampling commenced. Groundwater samples were collected in appropriate laboratory-provided sample containers via discharge tubing. All samples were capped, labeled, sealed in plastic bags, placed in ice-chilled, insulated coolers to maintain a shipping temperature of approximately 4 degrees Centigrade, and transported under a chain-of-custody protocol to Calscience. All sampling equipment was cleaned using a non-phosphate detergent, rinsed with tap water, and final-rinsed with de-ionized water before entering each borehole. All equipment was handled in a manner intended to prevent cross-contamination. 3.4.7 Monitoring Well Sampling and Analysis Table 1 summarizes the well sampling and analysis program. Baseline groundwater samples were chemically analyzed for the following:

• VOCs using USEPA Method 8260B • Hexavalent chromium using USEPA Method 7199 • Title 22 Metals using USEPA Methods 6020 (7471A for mercury) • 1,4-Dioxane using USEPA Method 8270C selective ion monitoring


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• 1,2,3-TCP using SRL Method 524 MOD • NDMA using USEPA 1625C • Perchlorate using USEPA Methods 314.0

3.5 INVESTIGATION DERIVED WASTE Soil cuttings, purge water, and decontamination water were generated during soil boring and groundwater monitoring well installation field activities. Soil cuttings were contained in 20-cubic yard covered bins located at each well location. Purge and decontamination water was contained in 6,000-gallon Baker tanks. All investigation derived waste was properly disposed of off-Site. 3.6 QUALITY ASSURANCE/QUALITY CONTROL (QA/QC) The overall QA/QC objective for field activities and laboratory analyses was to produce data of sufficient quality to support an evaluation of the environmental conditions, including groundwater measurements and contaminant concentrations. Standard operating procedures were conducted so that known and sufficiently acceptable levels of accuracy, precision, completeness, representativeness, and comparability were achieved for the data. The soil and groundwater data collected were evaluated for data adequacy and a report summarizing these activities is presented in Appendix F and is further discussed in the following subsections. 3.6.1 Field QA/QC Samples To verify laboratory results, duplicate soil and groundwater samples were collected at an approximate frequency of one sample for every 10 primary samples collected. One equipment rinsate sample was collected each day in the field to verify decontamination procedures by pouring laboratory-grade, organic-free water onto decontaminated sampling equipment and into sample containers. Duplicate and equipment rinsate samples were analyzed for the same constituents as their primary samples. In addition, one trip blank sample was sent to the lab with every cooler that contained samples for VOC analysis. Trip blanks were analyzed for VOCs. 3.6.2 Adequacy Assessment A Level II data adequacy procedure was utilized to obtain an adequate level of confidence in the data presented. A Level II data review includes a cursory review of laboratory data for precision, accuracy, representativeness, completeness, and comparability. QC data were reviewed for laboratory instrument precision and accuracy from laboratory control spike and laboratory control spike duplicate recoveries and relative percent differences. Samples were evaluated for representativeness of laboratory and site conditions based on review of method, trip, and equipment rinse blanks. The results were reviewed for completeness and comparability based on the analytical methods used, sample preservation and holding time criteria specified for each method, and the laboratory reporting limits.


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3.6.3 Data Validation Summary Results were reviewed in accordance with the appropriate methods. In addition, the USEPA Contract Laboratory Program National Functional Guidelines for Organic (USEPA, 1999) and Inorganic (USEPA, 2004) Data Review were used to provide overall guidance for the data adequacy evaluation process. The data review included an evaluation of the quality control parameters based on standard performance criteria presented in these documents. All data submitted for this project are of known and acceptable quality as qualified, based on laboratory-established control limits and the data quality objectives. These data are considered acceptable for their intended purposes. The Data Validation Report is included in Appendix F. 3.7 DEVIATIONS The following bulleted items summarize the deviations from the Workplan and reasons for the changes:

• Soil Boring ID Change: To avoid a duplication in soil boring IDs, changed soil boring identification SB-29 (from Workplan) to SB-31, as SB-29 was already used at the Site in 2010 and later renamed GW-29.

• Two Soil Borings Not Completed: Soil borings near trench IT-1 (labeled SB-31 and 32 in the Workplan) were not installed. Kaiser Permanente did not approve those soil borings in front of the Main Specimen Arrival Area, alleging that the drilling activities would impact Kaiser Permanente operations and their ability to receive samples. Honeywell requested deferring the advance of the soil borings to a later time, should the on-Site system operation require continued injection of water at trench IT-1. Honeywell secured USEPA approval to defer drilling the two additional soil borings near trench IT-1 on November 17, 2011.

• One Grab Groundwater Sample Not Collected: Groundwater was to be sampled using a SimulProbe® sampler at one of the soil boring locations (SB-32), near trench IT-1, however, since the two soil borings near trench IT-1 were deferred, this sample was not collected.

• Well Screen Adjustments: The purpose of the performance monitoring wells were to collect manual water level measurements in the screened zone to better evaluate system containment. As such, many of the well screens were placed higher, due to higher than anticipated water levels encountered during drilling activities.


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SECTION 4.0

RESULTS

This section summarizes the results of laboratory analyses of soil and groundwater samples collected from soil borings SB-30 and SB-31 and wells GW-30 through GW-34 during the pre-design investigation program, as well as groundwater level measurements from the newly installed and existing wells. The analytical sampling summary is presented in Table 1. Analytical results are stored on a compact disk in Appendix G. Data validation is presented in Appendix F. 4.1 SOIL ANALYTICAL RESULTS Soil analytical results are tabulated in Tables 4, 5, and 6 for detected constituents. Detected soil concentrations were compared to USEPA Region IX industrial scenario Regional Screening Levels (RSLs) (USEPA, 2011). One hundred twenty five soil samples were collected from the vadose zone, at depths from the surface to approximately 250-feet bgs (see Table 1 for specific depths). Most samples were analyzed for VOCs, metals, hexavalent chromium, 1,2,3-TCP, 1,4-dioxane, NDMA, and perchlorate (see Table 1 for details), as follows:

• SB-30: 13 soil samples (12 primary and 1 duplicate sample) • SB-31: 13 soil samples (12 primary and 1 duplicate sample) • GW-30: 22 soil samples (19 primary and 3 duplicate sample) • GW-31: 26 soil samples (23 primary samples and 3 duplicate sample) • GW-32: 0 soil samples • GW-33A: 0 soil samples • GW-33B: 26 soil samples (24 primary samples and 2 duplicate sample) • GW-34: 25 soil samples (22 primary and 3 duplicate sample)

Volatile Organic Compounds: Twelve VOCs were detected above laboratory method detection limits, however all were below their respective RSLs. Metals: Sixteen metals were detected above the laboratory method detection limits. Of those, only arsenic (at concentrations ranging from 0.254J to 3.01 milligrams per kilogram [mg/kg]) was detected above the respective RSL of 1.6 mg/kg. (A ‘J’ flag indicates an estimated concentration that was detected above the method detection limit, but below the method reporting limit.) Only four samples were detected above the RSL. Arsenic is a naturally occurring metal in southern California and is commonly found at concentrations ranging from 0.6 to 11.0 mg/kg (Bradford et al, 1996). Emerging Chemicals: 1,2,3-TCP, 1,4-Dioxane and NDMA were the only ECs that were detected in soil samples, however, only 1,4-dioxane was detected above the respective RSL. 1,4-Dioxane was detected in three samples collected from GW-31 at 71-, 81-, and 211-feet bgs at a concentration of 22,000, 24,000, and 52J micrograms per kilogram (µg/kg), respectively, the RSL is 17,000 µg/kg.


4-2

4.2 GROUNDWATER ANALYTICAL RESULTS This subsection describes groundwater chemistry analytical results. Groundwater analytical results are tabulated in Tables 7, 8, and 9 for detected constituents. Detected groundwater concentrations were compared to the California Department of Public Health (CDPH) primary MCLs, Notification Levels, Action Levels, and secondary MCLs (CDPH, 2011). Following well development, seven groundwater samples were collected and analyzed for VOCs, metals, hexavalent chromium, and ECs, as follows:

• GW-30: 1 primary sample • GW-31: 1 primary sample • GW-32: 1 primary sample + 1 duplicate • GW-33A: 1 primary sample • GW-33B: 1 primary sample • GW-34: 1 primary sample

Volatile Organic Compounds: Thirteen VOC constituents were detected in baseline groundwater samples above laboratory method detection limits, however, only five were detected above their respective MCLs, as summarized below:

• 1,1-Dichloroethene (DCE) was detected in six samples at concentrations ranging from 0.55J to 9.3 µg/L. The groundwater samples collected from GW-31 and GW-32 were detected above the MCL of 6 µg/L.

• cis-1,2-DCE was detected in five samples at concentrations ranging from 0.56J to 9.9 µg/L. The groundwater sample collected from GW-33A was detected above the MCL of 6 µg/L.

• Carbon Tetrachloride was detected in four samples at a concentration ranging from 0.41J to 0.54J µg/L. The groundwater sample collected from GW-32 was detected above the MCL of 0.5 µg/L.

• Tetrachloroethene (PCE) was detected in six samples at concentrations ranging from 0.61J to 9.8 µg/L. Only the sample collected from GW-33A was detected above the MCL of 5 µg/L.

• Trichloroethene (TCE) was detected in six samples at concentrations ranging from 10 to 61 µg/L, above the MCL of 5 µg/L.

Metals: Fourteen metals were detected in baseline groundwater samples above laboratory method detection limits, however, only total and hexavalent chromium were detected above the MCL. Chromium (total) was detected all samples at concentrations ranging from 0.75J to 80.7 µg/L. Chromium (hexavalent) was detected in all samples at concentrations ranging from 0.2J to 64 µg/L. The sample collected from GW-31 was detected above the MCL of 50 µg/L for both total and hexavalent chromium. Emerging Chemicals: 1,4-Dioxane was the only EC detected in baseline groundwater samples. 1,4-Dioxane was detected in six samples at concentrations ranging from 3.7 to 47 µg/L, above the Notification Level of 1 µg/L.


4-3

4.3 DISCUSSION The following section briefly describes the results from the pre-design investigation for NHE-2 long-term treatment activities: Soil: Trench Sampling: Two new soil borings (SB-30 and SB-31) were installed in the southeast portion of the Site (i.e. Home Depot) to assess subsurface soil conditions beneath trench IT-2. Twenty-six soil samples were collected and analyzed for VOCs, metals (including hexavalent chromium), and ECs. The concentrations of all analyses from soil samples were low to non-detect, and below regulatory standards. The low concentrations do not indicate a source that would threaten groundwater or impose unacceptable risk to human health near trench IT-2. Well Installation Soil Sampling: Six new monitoring groundwater wells (GW-30, GW-31, GW-32, GW-33A, GW-33B, and GW-34) were installed adjacent to extraction wells EW-3, EW-4, GW-24, trench IT-2, and off-Site to help evaluate hydraulic gradients adjacent to the remediation system. Of the six new wells, samples from GW-30, GW-31, GW-33B, and GW-34 were submitted for chemical analysis, in accordance with the Workplan. Ninety-nine soil samples were collected and analyzed for VOCs, metals (including hexavalent chromium), and ECs. The concentrations of VOCs, metals (including hexavalent chromium), 1,2,3-TCP, and NDMA were low to non-detect, and below regulatory standards. The low concentrations do not indicate a source that would threaten groundwater or impose unacceptable risk to human health in these new well areas. 1,4-Dioxane was detected in GW-31 at concentrations of 22,000 and 24,000 µg/kg at 71- and 81-feet bgs, respectively. These concentrations exceed the regulatory standard of 17,000 µg/kg. 1,4-Dioxane was not detected at the method detection limit (<27 µg/kg) in the 61.5- or 90.5-feet bgs samples indicating that the 1,4-dioxane-impacted area above regulatory standards is limited to 71- to 81-feet bgs in GW-31. In addition, 17 soil samples were non-detect for 1,4-dioxane from 90.5- to 250-feet bgs in GW-31, except for 52J µg/L at 211-feet bgs. The concentrations above the regulatory standard do indicate a new impacted area in the vicinity of 71- to 81-feet bgs in GW-31. Groundwater: Seven baseline groundwater samples (including one duplicate sample) were collected from the six new performance monitoring wells. Except for GW-33B, which is screened in a deeper zone, all groundwater samples were collected in the upper 5-feet of the potentiometric surface, the zone considered most impacted based on previous groundwater sampling. In all, 13 VOCs, 14 metals, and 1,4-dioxane were detected above laboratory method detection limits in groundwater samples collected during this investigation. Of those detected, 1,1-DCE, 1,2-dichloroethane (DCA), cis-1,2-DCE, carbon tetrachloride, PCE, TCE, total chromium, hexavalent chromium, and 1,4-dioxane exceed their respective MCLs. Groundwater concentrations of organics and inorganics detected during this assessment are within expected ranges, based on data from previous groundwater sampling events. This new data does not indicate the presence of a separate source at the Site. Furthermore, the southeastern boundary of the hexavalent chromium plume has been adequately defined and will continue to be monitored in future groundwater sampling events.


4-4

Containment: Water Levels: Water levels collected on January 30, 2012 during routine quarterly groundwater monitoring were used to create Figures 3, 4, and 5. All Site wells were measured, including the six new performance monitoring wells. Figures 3 and 4 depict cross-sectional views of the water levels across the Site and through the extraction wells along the southern boundary of the Site. On average, water levels have risen approximately 20 feet since 2010, and 6 feet since the third quarter 2011. Figure 5 shows groundwater levels for 28 monitoring wells and five operating extraction wells that are screened across or just below the water table. The average pumping rates of the five extraction wells ranged from 23 to 43 gallons per minute (gpm) during the week that ended February 3, 2012, for a total extraction rate of approximately 160 gpm. After on-site treatment, all of the extracted water was discharged to infiltration trench IT-2. NHE-2 was pumping at approximately 130 gpm during this period. The groundwater elevations in monitoring wells screened across or just below the water table ranged from 505.5 to 510.0 feet above mean sea level (ft msl) and averaged approximately 506.9 ft msl. Groundwater elevations in extraction wells ranged from 472.5 to 506.5 ft msl, and averaged 497.3 ft msl. Water levels were also measured in eight deeper-screened monitoring wells with screened intervals ranging from approximately 50 to 280 feet below the water table. Water levels in these deeper-screened wells ranged from 506.1 to 509.0 ft msl and averaged 507.5 ft msl. Water levels measured in adjacent shallow and deep monitoring wells indicate that the vertical hydraulic gradient was generally upward on January 30, 2012, ranging from approximately 0.001 to 0.014 ft/ft when calculated between screen mid-points, and averaging about 0.008 ft/ft. The monitoring wells that are screened across or just below the water table have varying saturated screen lengths ranging from about 30 to 100 feet, which has an effect on the measured water levels due to vertical hydraulic gradients. When contouring the data, water level variances of approximately ±0.15 feet may be considered for wells with other than the typical 60-foot screen length due to the vertical hydraulic gradient. Figure 5 shows groundwater elevation contours, based on the measured groundwater levels of wells screened across or just below the water table, using a 0.2-foot contour interval. The contours correctly bracket all but three of the measured water levels. As is typical, the measured water levels of monitoring wells GW-4 and GW-21 appear anomalous relative to the pattern exhibited by the other monitoring wells, and are not honored by the contours. Monitoring well GW-31, located adjacent to extraction well EW-4, had a water level a few tenths of a foot higher than expected, which may be partially explained by its relatively deep screened interval. The groundwater elevation contours shown in Figure 5 reflect a combination of hand contouring, automated contouring (using the minimum curvature method of Surfer, version 8, Golden Software), and groundwater modeling using the U.S. Geological Survey MODFLOW code (Harbaugh, 2005). With regard to the first two methods, the groundwater elevations provided by the new monitoring wells helped to better define the vertical hydraulic gradients and the configuration of the water table surface near infiltration trench IT-2 and pumping wells EW-3, EW-4, and GW-24.


4-5

The groundwater model used to assist the contouring encompasses the 24-acre Site within a 121-acre area (2,200 by 2,400 feet), with 5-foot by 5-foot model cells. From top to bottom, the model’s three layers are 75, 30, and 80 feet thick. Hydraulic conductivities are assigned to each layer based on the analysis of on-site pumping tests conducted in May and June of 2010. The pumping of each well is assigned to one or both of the two upper model layers consistent with each well’s construction. The modeled boundary heads are effectively located 2,000 feet beyond the edges of the model and were adjusted to represent the approximate orientation of the regional gradient at the time of the on-site water level measurements. The model results helped guide the contouring in areas with few monitoring wells and in the immediate vicinity of the pumping wells and infiltration trench. The arrows in Figure 5 that indicate the direction of groundwater flow were guided by particle tracking simulated using the model results and the U.S. Geological Survey MODPATH code (Pollock, 1994). Figure 5 also shows the on-site distribution of hexavalent chromium concentrations in shallow zone groundwater based on samples collected during the fourth quarter of 2011. The groundwater elevation contours and flow direction arrows in Figure 5 indicate that the on-site remedial system was hydraulically controlling the on-site plume as of January 30, 2012. NHE-2 Long-Term Approach: Data collected from this pre-design investigation will be used in a future report to evaluate the extent of hydraulic containment under the proposed approach involving routing NHE-2 groundwater to the Site for treatment and reinjection.


5-1

SECTION 5.0

CONCLUSIONS

Based on an evaluation of data generated during the soil and groundwater pre-design assessment completed between October and December 2011, the following conclusions can be made:

• Soil Sampling from IT-2 Trench: Twenty-six soil samples were collected and analyzed at trench IT-2. Concentrations from soil samples were low to non-detect, and below regulatory standards. The low concentrations do not indicate a source that would threaten groundwater or impose unacceptable risk to human health in the area of trench IT-2.

• Soil Sampling from Six New Well: Ninety-nine soil samples were collected and analyzed at GW-30, GW-31, GW-33B, and GW-34. Concentrations were low to non-detect, and below regulatory standards. The low concentrations do not indicate a source that would threaten groundwater or impose unacceptable risk to human health in these new well areas. 1,4-Dioxane was detected in GW-31 at 71- and 81-feet bgs. These concentrations exceed the regulatory standard. The concentrations above the regulatory standard do indicate a new impacted area in the vicinity of 71- to 81-feet bgs in GW-31.

• Groundwater Sampling from Six New Well: 1,1-DCE, 1,2-DCA, cis-1,2-DCE, carbon tetrachloride, PCE, TCE, total chromium, hexavalent chromium, and 1,4-dioxane were detected above their respective MCLs. Concentrations of these organics and inorganics are within expected ranges based on data from previous groundwater sampling events. Groundwater data from these six new groundwater wells do not indicate the presence of a separate source at the Site. Furthermore, the southeastern boundary of the hexavalent chromium plume has been adequately defined.

• Containment: Extraction pumping wells EW-2, EW-3, EW-4, and GW-24, along with the mounding at IT-2, are depicting the notion of an improved interpretation of observed groundwater levels that supports that Site hydraulic containment has been maintained under current conditions.


6-1

SECTION 6.0

REFERENCES

Bradford, G.R., Change, A.C, Page, A.L., Bakhtar, D., Frampton, J.A., and Wright, H., 1996. Background Concentrations of Trace and Major Elements in California Soils. March.

California Department of Public Health, 2011. MCLs, DLRs, and PHGs for Regulated Drinking Water Contaminants. Last updated July 27.

Department of Water Resources, 1981 and 1991. California Well Standards, Bulletin 74-90, California Department of Water Resources. June.

Harbaugh, A.W., 2005. MODFLOW-2005, The U.S. Geological Survey modular ground-water model—the Ground-Water Flow Process, USGS Techniques and Methods, Chapter 16, Book 6 (6-A16).

MWH, 2008. Site-Specific Health and Safety Plan for Remediation and Groundwater Monitoring Activities.

MWH, 2011. Supplemental Investigation Workplan for NHE-2 Long-Term Treatment. October 25.

Pollock, D.W., 1994. User’s Guide for MODPATH/MODPATH-PLOT, Version 3: A Particle Tracking Post-Processing Package for MODFLOW, the U. S. Geological Survey Finite-Difference Ground-Water Flow Model. USGS Open-File Report 94-464.

USEPA, 1999. Contract Laboratory Program National Functional Guidelines for Organic Data Review. EPA540/R-99/008. Office of Emergency and Remedial Response U.S. Environmental Protection Agency. Washington, D.C. October.

USEPA, 2004. Contract Laboratory Program National Functional Guidelines for Inorganic Data Review. EPA540/R-04/004. Office of Emergency and Remedial Response U.S. Environmental Protection Agency. Washington, D.C. October.

USEPA, 2011. Regional Screening Level (RSLs) Summary Table. November. Usoco1s02\Projects\Honeywell\North Hollywood\6.0\Studies & Reports\Pre-Design Investigation_NHE-2 Pre-Design\Report\FINAL Pre-Design Invest Report_060512

FIGURES

PUBLIC STORAGEPROPERTY

NEW SAMPLING LOCATIONS

TABLES

TABLE 1SOIL AND GROUNDWATER SAMPLING AND ANALYSIS SUMMARY

Supplemental Investigation for NHE-2 Long-Term TreatmentNorth Hollywood Operable Unit

Identification Field Sample ID Sample Depth(feet bgs) Sample Date Media Notes

SB-30-11.0-S-103111 11.0 - 11.5 10/31/11 SoilSB-30-21.0-S-103111 21.0 - 21.5 10/31/11 SoilSB-30-31.0-S-103111 31.0 - 31.5 10/31/11 SoilSB-30-41.0-S-103111 41.0 - 41.5 10/31/11 SoilSB-30-51.0-S-103111 51.0 - 51.5 10/31/11 SoilSB-30-60.5-S-103111 60.5 - 61.0 10/31/11 SoilSB-30-70.5-S-103111 70.5 - 71.0 10/31/11 Soil

-- 80 -- -- Attempted, no sample due to difficult drilling conditions-- 90 -- -- Attempted, no sample due to difficult drilling conditions-- 100 -- -- Attempted, no sample due to difficult drilling conditions

SB-30-125.5-S-110111 125.5 - 126.0 11/01/11 Soil-- 150 -- -- Attempted, no sample due to difficult drilling conditions-- 175 -- -- Attempted, no sample due to difficult drilling conditions

SB-30-185.0-S-110111 185.0 - 185.5 11/01/11 SoilSB-30-DUP01-S-110111 185.5 - 186.0 11/01/11 SoilSB-30-200.5-S-110111 200.5 - 201.0 11/01/11 SoilSB-30-225.0-S-110111 225.0 - 225.5 11/01/11 SoilSB-30-250.0-S-110211 250.0 - 250.5 11/02/11 SoilSB-31-11.0-S-102611 11.0 - 11.5 10/26/11 SoilSB-31-21.0-S-102611 21.0 - 21.5 10/26/11 SoilSB-31-31.0-S-102611 31.0 - 21.5 10/26/11 Soil

-- 40 -- -- Attempted, no sample due to difficult drilling conditions-- 50 -- -- Attempted, no sample due to difficult drilling conditions-- 60 -- -- Attempted, no sample due to difficult drilling conditions

SB-31-70.5-S-102611 70.5 - 71.0 10/26/11 Soil-- 80 -- -- Attempted, no sample due to difficult drilling conditions

SB-31-90.5-S-102611 90.5 - 91.0 10/26/11 SoilSB-31-100.5-S-102611 100.5 - 101.0 10/26/11 Soil

-- 110 -- -- Attempted, no sample due to difficult drilling conditionsSB-31-125.5-S-102711 125.5 - 126.0 10/27/11 SoilSB-31-150.5-S-102711 150.5 - 151.0 10/27/11 SoilSB-31-175.5-S-102711 175.5 - 176.0 10/27/11 SoilSB-31-200.5-S-102711 200.5 - 201.0 10/27/11 SoilSB-31-DUP01-S-102711 205.5-201 10/27/11 SoilSB-31-225.5-S-102711 225.5 - 226.0 10/27/11 SoilSB-31-250.5-S-102711 250.5 - 251.0 10/27/11 SoilGW-30-11.0-S-110311 11.0 - 11.5 11/03/11 SoilGW-30-21.0-S-110311 21.0 - 21.5 11/03/11 SoilGW-30-31.0-S-110311 31.0 - 31.5 11/03/11 SoilGW-30-41.0-S-110311 41.0 - 41.5 11/03/11 SoilGW-30-51.0-S-110311 51.0 - 51.5 11/03/11 Soil

-- 60 -- -- Attempted, no sample due to difficult drilling conditionsGW-30-70.5-S-110311 70.5 - 71.0 11/03/11 SoilGW-30-80.5-S-110311 80.5 - 81.0 11/03/11 SoilGW-30-91.0-S-110411 91.0 - 91.5 11/04/11 SoilGW-30-101.0-S-110411 101.0 - 101.5 11/04/11 SoilGW-30-110.5-S-110411 110.5 - 111.0 11/04/11 SoilGW-30-120.5-S-110411 120.5 - 121.0 11/04/11 SoilGW-30-130.5-S-110411 130.5 - 131.0 11/04/11 SoilGW-30-DUP01-S-110411 131.0 - 131.5 11/04/11 SoilGW-30-140.5-S-110411 140.5 - 141.0 11/04/11 SoilGW-30-150.5-S-110411 150.5 - 151.0 11/04/11 Soil

-- 160 -- -- Attempted, no sample due to difficult drilling conditionsGW-30-170.5-S-110411 170.5 - 171.0 11/04/11 SoilGW-30-180.5-S-110711 180.5 - 181.0 11/07/11 SoilGW-30-DUP02-S-110711 181.0 - 181.5 11/07/11 SoilGW-30-190.5-S-110711 190.5 - 191.0 11/07/11 SoilGW-30-200.5-S-110711 200.5 - 201.0 11/07/11 SoilGW-30-DUP03-S-110711 201.0 - 201.5 11/07/11 SoilGW-30-210.5-S-110711 210.5 - 211.0 11/07/11 Soil

-- 220 -- -- Sample saturated. No chemical analyzation-- 230 -- -- Sample saturated. No chemical analyzation-- 240 -- -- Sample saturated. No chemical analyzation-- 250 -- -- Sample saturated. No chemical analyzation-- 260 -- -- Sample saturated. No chemical analyzation-- 270 -- -- Sample saturated. No chemical analyzation-- 280 -- -- Sample saturated. No chemical analyzation-- 290 -- -- Sample saturated. No chemical analyzation-- 300 -- -- Sample saturated. No chemical analyzation

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GW-31-11.5-S-110811 11.0 - 11.5 11/08/11 SoilGW-31-21.5-S-110811 21.0 - 21.5 11/08/11 SoilGW-31-31-S-110811 30.5 - 31.0 11/08/11 SoilGW-31-41.5-S-110811 41.0 - 41.5 11/08/11 SoilGW-31-51.5-S-110811 51.0 - 51.5 11/08/11 SoilGW-31-61.5-S-110811 61.0 - 61.5 11/08/11 SoilGW-31-71-S-110811 70.5 - 71.0 11/08/11 SoilGW-31-81-S-110811 80.5 - 81.0 11/08/11 SoilGW-31-90.5-S-110911 90.0 - 90.5 11/09/11 SoilGW-31-101-S-110911 100.5 - 101.0 11/09/11 SoilGW-31-111-S-110911 110.5 - 111.0 11/09/11 SoilGW-31-DUP01-S-110911 111.0 - 111.5 11/09/11 SoilGW-31-121-S-110911 120.5 - 121.0 11/09/11 SoilGW-31-131.5-S-110911 131.0 - 131.5 11/09/11 SoilGW-31-141.5-S-110911 141.0 - 141.5 11/09/11 SoilGW-31-151.5-S-110911 151.0 - 151.5 11/09/11 SoilGW-31-161.5-S-111011 161.0 - 161.5 11/10/11 SoilGW-31-DUP02-S-111011 161.0 - 161.5 11/10/11 SoilGW-31-171-S-111011 170.5 - 171.0 11/10/11 SoilGW-31-181.5-S-111011 181.0 - 181.5 11/10/11 SoilGW-31-190.5-S-111011 190.0 - 190.5 11/10/11 SoilGW-31-201-S-111011 200.5 - 201.0 11/10/11 SoilGW-31-DUP03-S-111011 201.0 - 201.5 11/10/11 SoilGW-31-211-S-111011 210.5 - 211.0 11/10/11 SoilGW-31-220.5-S-111011 220.0 - 220.5 11/10/11 SoilGW-31-231.5-S-111011 231.0 - 231.5 11/10/11 Soil

-- 240 -- -- Sample saturated. No chemical analyzation-- 250 -- -- Sample saturated. No chemical analyzation-- 260 -- -- Sample saturated. No chemical analyzation-- 270 -- -- Sample saturated. No chemical analyzation-- 280 -- -- Sample saturated. No chemical analyzation-- 290 -- -- Sample saturated. No chemical analyzation-- 300 -- -- Sample saturated. No chemical analyzation-- 310 -- -- Sample saturated. No chemical analyzation-- 320 -- -- Sample saturated. No chemical analyzation-- 330 -- -- Sample saturated. No chemical analyzation

GW-33B-11-S-111711 10.5 - 11.0 11/17/11 SoilGW-33B-DUP01-S-111711 11.0 - 11.5 11/17/11 SoilGW-33B-21.5-S-111711 21.0 - 21.5 11/17/11 SoilGW-33B-31.5-S-111711 31.0 - 31.5 11/17/11 SoilGW-33B-41.5-S-111711 41.0 - 41.5 11/17/11 SoilGW-33B-50.5-S-111711 50.0 - 50.5 11/17/11 SoilGW-33B-60.5-S-111711 60.0 - 60.5 11/17/11 SoilGW-33B-71-S-111711 70.5 - 71.0 11/17/11 SoilGW-33B-81-S-111711 80.5 - 81.0 11/17/11 SoilGW-33B-91-S-111711 90.5 - 91.0 11/17/11 SoilGW-33B-101.5-S-111711 101.0 - 101.5 11/17/11 SoilGW-33B-111-S-111711 110.5 - 111.0 11/17/11 SoilGW-33B-120.5-S-111711 120.0 - 120.5 11/17/11 SoilGW-33B-131.5-S-111711 131.0 - 131.5 11/17/11 SoilGW-33B-141-S-111711 140.5 - 141.0 11/17/11 SoilGW-33B-151-S-111711 150.5 - 151.0 11/17/11 SoilGW-33B-161-S-111811 160.5 - 161.0 11/18/11 SoilGW-33B-171-S-111811 170.5 - 171.0 11/18/11 SoilGW-33B-181.5-S-111811 181.0 - 181.5 11/18/11 SoilGW-33B-DUP02-S-111811 181.5 - 182.0 11/18/11 SoilGW-33B-191-S-111811 190.5 - 191.0 11/18/11 SoilGW-33B-201-S-111811 200.5 - 201.0 11/18/11 SoilGW-33B-211-S-111811 210.5 - 211.0 11/18/11 SoilGW-33B-221-S-111811 220.5 - 221.0 11/18/11 SoilGW-33B-231-S-111811 230.5 - 231.0 11/18/11 SoilGW-33B-240.5-S-111811 240.0 - 224.5 11/18/11 Soil

-- 250 -- -- Sample saturated. No chemical analyzation-- 260 -- -- Sample saturated. No chemical analyzation-- 270 -- -- Sample saturated. No chemical analyzation-- 280 -- -- Sample saturated. No chemical analyzation-- 290 -- -- Sample saturated. No chemical analyzation-- 300 -- -- Sample saturated. No chemical analyzation-- 310 -- -- Sample saturated. No chemical analyzation-- 320 -- -- Sample saturated. No chemical analyzation-- 330 -- -- Sample saturated. No chemical analyzation-- 340 -- -- Sample saturated. No chemical analyzation-- 350 -- -- Sample saturated. No chemical analyzation

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X X X X

X X X X X X XX X

NC X X X X X X

NC

X X X

X X

X X X

NC NC NC NC

X X X X X X X

X X

X X X X

X

X NC NC

X X X X X

NC X X X X X X

NC X X X X X XNC X X X X X

X X XNC X X X X X X

X

X

XX X X X X X X

X X

X X X X X X

GW-31

X X

X

X

X X XXX X

XX

X

X

X X X X

X X X X X

X X X X X

X X X X X XXX

X X X X

X X X X

X X X

X X

X

X X X

X X X

X

X

XXXXXX

X

X X X X X X

X X XXX

X

X X X X

XX X X X X X

XX X X X X X

X X X X

X

X

X

NC X X X X X

XNC X X X X XNC

NC X X X XX X X X X X

XX X X

X X XXXX

X X X X

X X X X X

X X X X X XX

X

X XNC X

X X X X

X X X X X XXX

X

X X X X X XXX X X X XX

X

X

NC X

XNC X X X X XX X X X XX X X X X XX

XX

X X

X

X

X X X

XNC X

X

X X X X XX X X

X

X

GW-33B

Page 2 of 3




Vol

atile

Org

anic

Com

poun

ds

Met

als

Chr

omiu

m V

I

1,4

-Dio

xane

Per

chlo

rate

1,2

,3-T

richl

orop

ropa

ne

N-N

itros

odim

ethy

lam

ine

GW-34-11.0-S-111711 11.0 - 11.5 11/17/11 SoilGW-34-21.0-S-111711 21.0 - 21.5 11/17/11 SoilGW-34-31.0-S-111711 31.0 - 31.5 11/17/11 SoilGW-34-41.0-S-111711 41.0 - 41.5 11/17/11 SoilGW-34-51.0-S-111711 51.0 - 51.5 11/17/11 SoilGW-34-61.0-S-111811 61.0 - 61.5 11/18/11 SoilGW-34-71.0-S-111811 71.0 - 71.5 11/18/11 SoilGW-34-80.5-S-111811 80.5 - 81.0 11/18/11 SoilGW-34-90.5-S-111811 90.5 - 91.0 11/18/11 Soil

-- 100 -- -- Attempted, no sample due to difficult drilling conditionsGW-34-110.5-S-111811 110.5 - 111.0 11/18/11 SoilGW-34-120.5-S-111811 120.5 - 121.0 11/18/11 SoilGW-34-130.5-S-111811 130.5 - 131.0 11/18/11 SoilGW-34-140.5-S-111811 140.5 - 141.0 11/18/11 SoilGW-34-150.0-S-111811 150.0 - 150.5 11/18/11 SoilGW-34-DUP01-S-111811 150.5 - 151.0 11/18/11 SoilGW-34-160.5-S-112111 160.5 - 161.0 11/21/11 SoilGW-34-DUP02-S-112111 161.0 - 161.5 11/21/11 SoilGW-34-170.5-S-112111 170.5 - 171.0 11/21/11 SoilGW-34-180.5-S-112111 180.5 - 181.0 11/21/11 SoilGW-34-190.5-S-112111 190.5 - 191.0 11/21/11 SoilGW-34-200.5-S-112111 200.5 - 201.0 11/21/11 SoilGW-34-210.5-S-112111 210.5 - 211.0 11/21/11 SoilGW-34-220.5-S-112111 220.5 - 221.0 11/21/11 SoilGW-34-DUP03-S-112111 221.0 - 221.5 11/21/11 SoilGW-34-230.5-S-112111 230.5 - 231.0 11/21/11 Soil

-- 240 -- -- Sample saturated. No chemical analyzation-- 250 -- -- Sample saturated. No chemical analyzation-- 260 -- -- Sample saturated. No chemical analyzation-- 270 -- -- Sample saturated. No chemical analyzation-- 280 -- -- Sample saturated. No chemical analyzation-- 290 -- -- Sample saturated. No chemical analyzation

GW-30 GW-30-122111 224 12/21/11 GWGW-31 GW-31-122111 245 12/21/11 GW

GW-32-122111 233 12/21/11 GWDUP-122111 233 12/21/11 GW

GW-33A GW-33A-122111 225 12/21/11 GWGW-33B GW-33B-122111 335 12/21/11 GWGW-34 GW-34-122111 223 12/21/11 GW

Notes:bgs - Below ground surfaceNC - Not collected due to gravelly materialsDR - Depth RegionGW- Groundwater

GW-32 X X XX X X X X X XX X X X X X X

X X X X X X X

X X X X X X XX X X X X X X

X X X X X X X

X X X X

X X X X X X

X

X X X XX X X X

X X X X X X

X X XX X X

X X

X X

XX X X X X X

X X X X X X XX

X XX X X X

X X X X X

X X X

X X X X

X

X X X X X X

X X X X XX X X X

X X X

X X XX X X XX X X XX X X X X X X

X X XX

X

X X XX X X X X X X

X X X

X

X X

X X X

XX X XX

XX

X X X

X X

X X X

XX

X X X X X X X

X

X X X X X X X

X X

X

GW-34

X X X X X X X

X XX X X XX X

Page 3 of 3

TAB

LE 2

WEL

L C

ON

STR

UC

TIO

N D

ETA

ILS

Supp

lem

enta

l Inv

estig

atio

n fo

r NH

E-2

Long

-Ter

m T

reat

men

tN

orth

Hol

lyw

ood

Ope

rabl

e U

nit

Tota

l Dep

thW

ell

Scre

ened

Scre

enSc

reen

Slo

tId

entif

icat

ion

Dril

led

Dia

met

erIn

terv

alLe

ngth

Size

Scre

en T

ype

Filte

r Typ

e(ft

bgs

)(in

ches

)(ft

bgs

)(fe

et)

(inch

es)

TOR

FSTO

CG

W-3

030

54

220-

290

700.

030

Sch

80

PV

C#2

/12

sand

1894

990.

6364

4593

2.91

740.

6774

0.70

740.

38G

W-3

134

26

240-

330

900.

030

Sch

80

PV

C#2

/12

sand

1895

108.

0164

4544

2.46

742.

8274

2.79

742.

49G

W-3

231

54

230-

300

700.

030

Sch

80

PV

C#2

/12

sand

1895

185.

9664

4526

9.02

737.

6473

7.67

737.

30G

W-3

3A30

54

220-

290

700.

030

Sch

80

PV

C#2

/12

sand

1895

218.

0064

4510

9.24

737.

0173

7.02

736.

66G

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3B36

04

330-

350

200.

030

Sch

80

PV

C#2

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1895

215.

7564

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8.03

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1894

916.

0664

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59N

otes

:a S

urve

yed

Dec

embe

r 19,

201

1, b

ased

on

Sta

te P

lane

Coo

rdin

ate

Sys

tem

(NA

D 8

3).

ft bg

s - F

eet b

elow

gro

und

surfa

ce

FS -

Fini

shed

Sur

face

PV

C -

Pol

yvin

ylch

lorid

e

Sch

- S

ched

ule

TOC

- To

p of

Cas

ing

TOR

- To

p of

Rim

of v

ault

Surv

ey In

form

atio

na

Elev

atio

nN

orth

ing

East

ing

Pag

e 1

of 1

TABLE 3APPROXIMATE VOLUME REMOVED DURING WELL DEVELOPMENT


Volume Removed

(Gallons)

GW-30 311GW-31 8,356GW-32 614

GW-33A 558GW-33B 924GW-34 470

Identification

Page 1 of 1

TABLE 4GROUNDWATER ELEVATIONS


GW-30 01/30/12 740.38 232.87 507.51GW-31 01/30/12 742.49 237.37 505.12GW-32 01/30/12 737.30 232.32 504.98

GW-33A 01/30/12 736.66 231.42 505.24GW-33B 01/30/12 736.73 231.66 505.07GW-34 01/30/12 732.59 227.38 505.21

Notes:a Based on December 19, 2011 surveyft msl - Feet above mean sea levelft btoc - Feet below top of casing

Identification Date MeasuredTop of Casing

Elevation a

(ft msl)

Depth to Water (ft btoc)

Groundwater Elevation (ft msl)

Page 1 of 1

TABLE 5SOIL ANALYTICAL DATA - DETECTED VOLATILE ORGANIC COMPOUNDS


1,1

-Dic

hlor

oeth

ene

1,2

-Dic

hlor

oben

zene

2-B

utan

one

Ace

tone

Ben

zene

Car

bon

Dis

ulfid

e

Chl

orof

orm

Eth

ylbe

nzen

e

p/m

-Xyl

ene

Tet

rach

loro

ethe

ne

Tol

uene

Tric

hlor

oeth

ene

SB-30-11.0-S-103111 11 10/31/11 <0.34 <0.22 <3.7 < 49 1.2 <0.3 <0.23 <0.15 <0.26 <0.21 0.56 J <0.29SB-30-21.0-S-103111 21 10/31/11 <0.35 <0.23 <3.8 < 50 0.33 J <0.31 <0.24 <0.15 <0.27 <0.21 <0.51 <0.3SB-30-31.0-S-103111 31 10/31/11 <0.34 <0.22 <3.7 < 49 0.38 J <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29SB-30-41.0-S-103111 41 10/31/11 <0.29 <0.19 <3.2 < 42 0.37 J <0.26 <0.2 <0.13 <0.23 <0.18 <0.44 <0.26SB-30-51.0-S-103111 51 10/31/11 <0.3 <0.2 <3.3 < 43 0.32 J <0.26 <0.21 <0.13 0.32 J <0.18 <0.45 <0.26SB-30-60.5-S-103111 60.5 10/31/11 <0.31 <0.2 <3.4 < 44 0.15 J 0.35 J <0.21 <0.13 <0.24 <0.19 <0.46 <0.27SB-30-70.5-S-103111 70.5 10/31/11 <0.32 <0.21 <3.5 < 46 <0.12 <0.28 <0.22 <0.14 <0.25 <0.19 <0.47 <0.28SB-30-125.5-S-110111 125.5 11/01/11 <0.32 <0.21 <3.5 < 47 <0.12 <0.29 <0.22 <0.14 <0.25 <0.2 <0.48 <0.28SB-30-185.0-S-110111 185 11/01/11 <0.35 <0.23 <3.8 <6.4 <0.13 <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 <0.31SB-30-DUP01-S-110111 185.5 11/01/11 <0.34 <0.22 <3.7 < 49 0.37 J <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29SB-30-200.5-S-110111 200.5 11/01/11 <0.33 <0.22 <3.6 < 47 <0.12 <0.29 <0.23 <0.14 <0.25 <0.2 <0.49 <0.28SB-30-225.0-S-110111 225 11/01/11 <0.31 <0.2 <3.4 <5.6 0.36 J <0.27 <0.21 <0.13 <0.24 <0.19 <0.46 <0.27SB-30-250.0-S-110211 250 11/02/11 <0.31 <0.21 <3.4 <5.6 < 0.90 <0.28 <0.22 <0.14 <0.24 <0.19 <0.47 <0.27SB-31-11.0-S-102611 11 10/26/11 <0.34 <0.22 <3.7 <6.1 < 0.98 <0.3 0.25 J <0.15 <0.26 <0.21 <0.51 <0.3SB-31-21.0-S-102611 21 10/26/11 <0.35 <0.23 <3.8 < 50 2 <0.31 <0.24 <0.15 0.29 J <0.21 0.92 J <0.3SB-31-31.0-S-102611 31 10/26/11 <0.34 <0.22 <3.7 <6.1 < 0.98 <0.3 <0.24 <0.15 <0.26 <0.21 <0.51 <0.3SB-31-70.5-S-102611 70.5 10/26/11 <0.31 <0.2 <3.4 <5.6 < 0.89 <0.27 <0.21 <0.13 <0.24 <0.19 <0.46 <0.27SB-31-90.5-S-102611 90.5 10/26/11 <0.28 <0.19 <3.1 <5.1 < 0.82 <0.25 <0.2 <0.12 0.26 J <0.17 <0.42 <0.25SB-31-100.5-S-102611 100.5 10/26/11 <0.28 <0.18 <3 < 40 < 0.80 <0.24 <0.19 <0.12 <0.21 <0.17 <0.41 <0.24SB-31-125.5-S-102711 125.5 10/27/11 <0.3 0.38 J <3.2 < 43 <0.11 <0.26 <0.2 <0.13 <0.23 <0.18 <0.44 <0.26SB-31-150.5-S-102711 150.5 10/27/11 <0.33 <0.22 <3.6 <5.9 <0.12 <0.29 <0.23 <0.14 <0.25 <0.2 <0.49 <0.29SB-31-175.5-S-102711 175.5 10/27/11 <0.32 <0.21 <3.5 < 47 <0.12 <0.29 <0.22 <0.14 <0.25 <0.2 <0.48 <0.28SB-31-200.5-S-102711 200.5 10/27/11 <0.33 <0.22 <3.6 < 48 < 0.97 <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29SB-31-DUP01-S-102711 201 10/27/11 <0.32 <0.21 <3.5 <5.8 < 0.94 <0.29 <0.22 <0.14 <0.25 <0.2 <0.48 <0.28SB-31-225.5-S-102711 225.5 10/27/11 <0.31 <0.2 <3.4 <5.6 < 0.89 <0.27 <0.21 <0.14 <0.24 <0.19 <0.46 <0.27SB-31-250.5-S-102711 250 10/27/11 <0.3 <0.2 <3.3 < 43 < 1.5 UJ <0.27 <0.21 <0.13 <0.23 <0.18 0.81 J <0.26GW-30-11.0-S-110311 11 11/03/11 <0.32 <0.21 <3.5 <5.9 < 0.94 <0.29 <0.22 <0.14 <0.25 <0.2 <0.48 <0.28GW-30-21.0-S-110311 21 11/03/11 <0.31 <0.2 <3.4 <5.6 < 0.90 0.28 J <0.21 <0.14 <0.24 <0.19 <0.46 <0.27GW-30-31.0-S-110311 31 11/03/11 <0.33 <0.22 <3.6 <6 < 0.96 <0.29 <0.23 <0.14 <0.26 <0.2 <0.49 <0.29GW-30-41.0-S-110311 41 11/03/11 <0.33 <0.22 <3.6 <6 < 0.97 <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29GW-30-51.0-S-110311 51 11/03/11 <0.32 <0.21 <3.5 <5.8 < 0.94 <0.29 <0.22 <0.14 <0.25 <0.2 <0.48 <0.28GW-30-70.5-S-110311 70.5 11/03/11 <0.36 <0.24 <3.9 <6.5 <0.13 2.1 J <0.25 <0.16 <0.28 <0.22 <0.54 <0.31GW-30-80.5-S-110311 80.5 11/03/11 <0.31 <0.2 <3.3 <5.5 <0.12 1.4 J <0.21 <0.13 <0.24 <0.19 <0.46 <0.27GW-30-91.0-S-110411 91 11/04/11 <0.29 <0.19 <3.2 8.4 J < 0.85 0.79 J <0.2 0.16 J 0.52 J <0.18 0.74 J <0.26GW-30-101.0-S-110411 101 11/04/11 <0.3 <0.2 <3.3 5.9 J <0.11 0.56 J <0.21 <0.13 <0.23 <0.18 <0.45 <0.26GW-30-110.5-S-110411 110.5 11/04/11 <0.3 <0.2 <3.3 6.2 J <0.11 <0.26 <0.21 <0.13 <0.23 <0.18 <0.45 <0.26GW-30-120.5-S-110411 120.5 11/04/11 <0.37 <0.24 <4 8.8 J <0.14 1.1 J <0.26 <0.16 <0.29 <0.22 <0.55 <0.32GW-30-130.5-S-110411 130.5 11/04/11 <0.34 <0.23 <3.7 7.4 J < 0.99 0.62 J <0.24 <0.15 <0.27 <0.21 <0.51 <0.3GW-30-DUP01-S-110411 131 11/04/11 <0.29 <0.19 <3.1 9.9 J < 0.83 0.68 J <0.2 <0.13 <0.22 <0.17 <0.43 <0.25GW-30-140.5-S-110411 140.5 11/04/11 <0.31 <0.2 <3.3 <5.5 < 0.88 <0.27 <0.21 <0.13 <0.24 <0.19 <0.45 <0.27GW-30-150.5-S-110411 150.5 11/04/11 <0.34 <0.22 <3.7 7.5 J < 0.97 <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29GW-30-170.5-S-110411 170.5 11/04/11 <0.35 <0.23 <3.8 7.8 J <0.13 1.1 J <0.24 <0.15 <0.27 <0.21 <0.52 <0.3GW-30-180.5-S-110711 180.5 11/07/11 <0.28 <0.18 <3 8.2 J < 0.80 <0.24 <0.19 <0.12 <0.21 <0.17 <0.41 <0.24GW-30-DUP02-S-110711 181 11/07/11 <0.3 <0.2 <3.2 10 J < 0.86 <0.26 <0.21 <0.13 <0.23 <0.18 <0.44 <0.26GW-30-190.5-S-110711 190.5 11/07/11 <0.34 <0.22 <3.7 <6.1 < 1.6 UJ <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29GW-30-200.5-S-110711 200.5 11/07/11 <0.29 <0.19 <3.2 <5.3 < 0.85 <0.26 <0.2 <0.13 <0.23 <0.18 <0.44 <0.25GW-30-DUP03-S-110711 201 11/07/11 <0.31 <0.2 <3.4 <5.6 < 0.89 <0.27 <0.21 <0.14 <0.24 <0.19 <0.46 <0.27GW-30-210.5-S-110711 210.5 11/07/11 <0.35 <0.23 <3.8 <6.2 <0.13 <0.31 <0.24 <0.15 <0.27 <0.21 <0.52 <0.3

SB-31

GW-30

Concentrations (g/kg)

SB-30

Sample DateField Sample IDLocation

SampleDepth

(feet bgs)

Page 1 of 3



1,1

-Dic

hlor

oeth

ene

1,2

-Dic

hlor

oben

zene

2-B

utan

one

Ace

tone

Ben

zene

Car

bon

Dis

ulfid

e

Chl

orof

orm

Eth

ylbe

nzen

e

p/m

-Xyl

ene

Tet

rach

loro

ethe

ne

Tol

uene

Tric

hlor

oeth

ene



SampleDepth

(feet bgs)

GW-31-11.5-S-110811 11.5 11/08/11 <0.33 <0.22 <3.6 6.5 J < 1.2 UJ <0.3 <0.23 <0.15 <0.26 <0.2 0.52 J <0.29GW-31-21.5-S-110811 21.5 11/08/11 <0.39 <0.26 <4.2 <7 < 1.1 <0.34 <0.27 <0.17 <0.3 <0.23 <0.58 <0.34GW-31-31-S-110811 31 11/08/11 <0.37 <0.24 <4 <6.6 < 1.1 0.36 J <0.25 <0.16 <0.28 <0.22 <0.55 <0.32GW-31-41.5-S-110811 41.5 11/08/11 <0.36 <0.24 <3.9 <6.5 < 1.0 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.31GW-31-51.5-S-110811 51.5 11/08/11 <0.35 <0.23 <3.8 <6.2 < 1.0 <0.31 <0.24 <0.15 <0.27 <0.21 <0.52 <0.3GW-31-61.5-S-110811 61.5 11/08/11 <0.34 <0.23 <3.7 <6.2 < 0.99 <0.3 <0.24 <0.15 <0.26 <0.21 <0.51 <0.3GW-31-71-S-110811 71 11/08/11 <0.35 <0.23 <3.8 <6.4 < 1.0 <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 <0.31GW-31-81-S-110811 81 11/08/11 <0.36 <0.24 <4 <6.6 < 1.0 1.2 J <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-31-90.5-S-110911 90.5 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-101-S-110911 101 11/09/11 <0.33 <0.22 <3.6 8.1 J < 0.96 0.58 J <0.23 <0.15 <0.26 <0.2 <0.49 <0.29GW-31-111-S-110911 111 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-DUP01-S-110911 111.5 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-121-S-110911 121 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-131.5-S-110911 131.5 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-141.5-S-110911 141.5 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-151.5-S-110911 151.5 11/09/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-31-161.5-S-111011 161.5 11/10/11 <0.36 <0.24 <4 <6.6 <0.14 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-31-DUP02-S-111011 161.5 11/10/11 <0.38 <0.25 <4.2 8.2 J <0.14 0.48 J <0.27 <0.17 <0.3 <0.23 <0.57 <0.33GW-31-171-S-111011 171 11/10/11 <0.32 <0.21 <3.5 5.9 J < 0.93 0.37 J <0.22 <0.14 <0.25 <0.2 <0.48 <0.28GW-31-181.5-S-111011 181.5 11/10/11 <0.31 <0.21 <3.4 5.9 J < 0.90 <0.28 <0.22 <0.14 <0.24 <0.19 <0.46 <0.27GW-31-190.5-S-111011 190.5 11/10/11 <0.35 <0.23 <3.8 <6.4 < 1.0 <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 <0.31GW-31-201-S-111011 201 11/10/11 <0.38 <0.25 <4.1 10 J < 1.1 3.2 J <0.26 <0.17 <0.29 <0.23 <0.56 <0.33GW-31-DUP03-S-111011 201.5 11/10/11 <0.37 <0.25 <4.1 <6.7 < 1.1 <0.33 <0.26 <0.16 <0.29 <0.23 0.67 J <0.32GW-31-211-S-111011 211 11/10/11 <0.37 <0.24 <4 <6.7 < 1.1 <0.33 <0.26 <0.16 <0.29 <0.22 <0.55 <0.32GW-31-220.5-S-111011 220.5 11/10/11 <0.36 <0.24 <4 <6.6 < 1.0 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-31-231.5-S-111011 231.5 11/10/11 <0.36 <0.24 <4 <6.6 <0.14 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-33B-11-S-111711 11 11/17/11 <0.33 <0.22 <3.6 8.9 J < 0.96 <0.29 <0.23 <0.15 <0.26 <0.2 <0.49 <0.29GW-33B-DUP01-S-111711 11.5 11/17/11 <0.33 <0.22 <3.6 7.9 J < 0.95 <0.29 <0.23 <0.14 <0.25 <0.2 <0.49 <0.29GW-33B-21.5-S-111711 21.5 11/17/11 <0.36 <0.24 <3.9 7 J < 1.0 <0.31 <0.25 <0.16 <0.28 <0.22 <0.53 <0.31GW-33B-31.5-S-111711 31.5 11/17/11 <0.4 <0.26 <4.3 <7.2 < 1.2 <0.35 <0.27 <0.17 <0.31 <0.24 <0.59 <0.35GW-33B-41.5-S-111711 41.5 11/17/11 <0.38 <0.25 <4.1 <6.9 < 1.1 <0.34 <0.26 <0.17 <0.29 <0.23 <0.57 <0.33GW-33B-50.5-S-111711 50.5 11/17/11 <0.35 <0.23 <3.8 6.4 J < 1.0 <0.31 <0.24 <0.15 <0.27 <0.21 <0.52 <0.3GW-33B-60.5-S-111711 60.5 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-71-S-111711 71 11/17/11 <0.34 <0.23 <3.7 10 J < 0.99 1 J <0.24 <0.15 <0.27 <0.21 <0.51 <0.3GW-33B-81-S-111711 81 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-91-S-111711 91 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-101.5-S-111711 101.5 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-111-S-111711 111 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-120.5-S-111711 120.5 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-131.5-S-111711 131.5 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-141-S-111711 141 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-151-S-111711 151 11/17/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-161-S-111811 161 11/18/11 <0.4 <0.27 <4.4 <7.3 <0.15 <0.36 <0.28 <0.18 <0.31 <0.25 <0.6 <0.35GW-33B-171-S-111811 171 11/18/11 NC NC NC NC NC NC NC NC NC NC NC NCGW-33B-181.5-S-111811 181.5 11/18/11 <0.35 <0.23 <3.8 <6.4 0.35 J <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 <0.31GW-33B-DUP02-S-111811 182 11/18/11 <0.37 <0.25 <4.1 <6.7 2.9 <0.33 <0.26 <0.16 <0.29 <0.23 <0.56 <0.32GW-33B-191-S-111811 191 11/18/11 <0.4 <0.26 <4.3 <7.2 <0.15 <0.35 <0.27 <0.17 <0.31 <0.24 <0.59 <0.35GW-33B-201-S-111811 201 11/18/11 0.31 J <0.2 <3.3 <5.5 1.2 <0.27 <0.21 <0.13 <0.23 0.22 J <0.45 2.4 GW-33B-211-S-111811 211 11/18/11 <0.38 <0.25 <4.1 <6.9 <0.14 <0.34 <0.26 <0.17 <0.29 <0.23 <0.57 <0.33GW-33B-221-S-111811 221 11/18/11 <0.38 <0.25 <4.1 <6.9 <0.14 <0.34 <0.26 <0.17 <0.29 <0.23 <0.57 <0.33GW-33B-231-S-111811 231 11/18/11 <0.35 <0.23 <3.8 <6.4 <0.13 <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 0.89 JGW-33B-240.5-S-111811 240.5 11/18/11 NC NC NC NC NC NC NC NC NC NC NC NC

GW-31

GW-33B

Page 2 of 3



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SampleDepth

(feet bgs)

GW-34-11.0-S-111711 11 11/17/11 <0.31 <0.2 6.7 J 19 J < 0.88 <0.27 <0.21 <0.13 <0.24 <0.19 <0.46 <0.27GW-34-21.0-S-111711 21 11/17/11 <0.33 <0.22 <3.6 9.8 J < 0.95 <0.29 <0.23 <0.14 <0.26 <0.2 <0.49 <0.29GW-34-31.0-S-111711 31 11/17/11 <0.32 <0.21 <3.5 <5.7 < 0.92 <0.28 <0.22 <0.14 <0.25 <0.19 <0.47 <0.28GW-34-41.0-S-111711 41 11/17/11 <0.33 <0.22 <3.6 9.7 J < 1.1 UJ 0.69 J <0.23 <0.14 <0.25 <0.2 <0.49 <0.29GW-34-51.0-S-111711 51 11/17/11 <0.36 <0.24 <4 <6.6 < 1.0 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-34-61.0-S-111811 61 11/18/11 <0.38 <0.25 <4.2 <6.9 < 1.1 0.93 J <0.27 <0.17 0.31 J <0.23 <0.57 <0.33GW-34-71.0-S-111811 71 11/18/11 <0.39 <0.26 <4.2 <7 < 1.1 0.47 J <0.27 <0.17 0.35 J <0.23 <0.58 <0.34GW-34-80.5-S-111811 80.5 11/18/11 <0.47 <0.31 <5.1 <8.4 <0.18 1 J <0.32 <0.2 <0.36 <0.28 <0.7 <0.41GW-34-90.5-S-111811 90.5 11/18/11 <0.31 <0.21 <3.4 <5.6 <0.12 0.43 J <0.21 <0.14 <0.24 <0.19 <0.46 <0.27GW-34-110.5-S-111811 110.5 11/18/11 <0.35 <0.23 <3.8 <6.3 <0.13 <0.31 <0.24 <0.15 <0.27 <0.21 <0.52 <0.3GW-34-120.5-S-111811 120.5 11/18/11 <0.28 <0.19 <3.1 6.2 J < 0.82 <0.25 <0.2 <0.12 <0.22 <0.17 <0.42 <0.25GW-34-130.5-S-111811 130.5 11/18/11 <0.29 <0.19 <3.1 <5.2 <0.11 <0.25 <0.2 <0.13 <0.22 <0.17 <0.43 <0.25GW-34-140.5-S-111811 140.5 11/18/11 <0.36 <0.24 <4 <6.6 <0.14 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.32GW-34-150.0-S-111811 150 11/18/11 <0.43 <0.28 <4.7 9.4 J < 1.2 0.53 J <0.3 <0.19 0.36 J <0.26 <0.64 <0.37GW-34-DUP01-S-111811 150.5 11/18/11 <0.36 <0.24 <3.9 6.7 J < 1.0 <0.32 <0.25 <0.16 <0.28 <0.22 <0.54 <0.31GW-34-160.5-S-112111 160.5 11/21/11 <0.32 <0.21 <3.5 <5.7 <0.12 <0.28 <0.22 <0.14 <0.25 <0.19 <0.47 <0.28GW-34-DUP02-S-112111 161 11/21/11 <0.32 <0.21 <3.4 <5.7 0.12 J <0.28 <0.22 <0.14 <0.24 <0.19 <0.47 <0.27GW-34-170.5-S-112111 170.5 11/21/11 <0.38 <0.25 <4.2 8 J 0.15 J <0.34 <0.27 <0.17 <0.3 <0.23 <0.57 <0.33GW-34-180.5-S-112111 180.5 11/21/11 <0.3 <0.2 <3.3 <5.4 0.65 J <0.26 <0.21 <0.13 <0.23 <0.18 <0.44 <0.26GW-34-190.5-S-112111 190.5 11/21/11 <0.32 <0.21 <3.4 <5.7 0.42 J <0.28 <0.22 <0.14 <0.24 <0.19 <0.47 <0.27GW-34-200.5-S-112111 200.5 11/21/11 <0.32 <0.21 <3.5 <5.8 0.66 J <0.28 <0.22 <0.14 <0.25 <0.19 <0.48 <0.28GW-34-210.5-S-112111 210.5 11/21/11 <0.38 <0.25 <4.1 <6.9 0.21 J <0.34 <0.26 <0.17 <0.29 <0.23 <0.57 <0.33GW-34-220.5-S-112111 220.5 11/21/11 <0.33 <0.22 <3.6 <6 <0.13 <0.3 <0.23 <0.15 <0.26 <0.2 <0.5 <0.29GW-34-DUP03-S-112111 221 11/21/11 <0.35 <0.23 <3.8 <6.4 <0.13 <0.31 <0.24 <0.15 <0.27 <0.21 <0.53 <0.31GW-34-230.5-S-112111 230.5 11/21/11 <0.33 <0.22 <3.6 6.2 J 0.21 J <0.29 <0.23 <0.14 <0.25 <0.2 <0.49 1.7 J

RSL: 1,100,000 9,800,000 -- 630,000,000 5,400 3,700,000 1,500 27,000 2,500,000 2,600 45,000,000 6,400

Notes:Samples analyzed using U.S. Environmental Protection Agency (EPA) Methods 8260B/5035Bbgs - Below ground surfaceJ - Result is estimatedµg/kg - Micrograms per kilogramNC - Not collected due to coarse gravel-rich materials in sampler prohibited collection of EnCore samplersRSL - EPA Region 9 Regional Screening Levels, Industrial Scenario (effective November 2011)UJ - the result is not detected, however the method detection limit or reporting limit value is qualified as estimated.< - Not detected above the method detection limit shown-- - No RSL

GW-34

Page 3 of 3

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41

3.62

1.

69

0.00

964

J0.

227

J1.

37

<0.2

11<0

.145

5.36

17

S

B-3

1-20

0.5-

S-1

0271

120

0.5

10/2

7/11

1.07

81

.2 J

0.30

3 J

<0.1

319.

07

0.16

J6.

12

12.6

3.

14

0.05

49 J

0.17

5 J

7.27

<0

.211

<0.1

4521

.4

37.2

S

B-3

1-D

UP

01-S

-102

711

201

10/2

7/11

1.15

10

4 0.

354

J<0

.131

10.1

0.

2 J

7.19

14

4.

34

0.03

92 J

0.32

8 J

8.37

<0

.211

<0.1

4522

.2

47.2

S

B-3

1-22

5.5-

S-1

0271

122

5.5

10/2

7/11

0.63

5 J

38.3

J<0

.218

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313.

67 J

0.04

4 J

2.48

J5.

76 J

2.14

J0.

0138

J0.

291

J2.

76 J

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11<0

.145

9.57

J20

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SB

-31-

250.

5-S

-102

711

250

10/2

7/11

0.81

5 J

77.4

0.

225

J<0

.131

7.01

0.

068

J5.

17

9.4

3.82

0.

0227

J0.

578

J6.

13

<0.2

11<0

.145

15.3

33

.4

Loca

tion

Beryllium

Mercury

Cadmium

Chromium (Hexavalent)

Sam

ple

Dep

th(fe

et

bgs)

Cobalt

Copper

Lead

Fiel

d Sa

mpl

e ID

Con

cent

ratio

ns (m

g/kg

)

Zinc

Sam

ple

Dat

e

Chromium

Molybdenum

Nickel

Selenium

Thallium

Vanadium

Arsenic

Barium

SB

-30

SB

-31

Pag

e 1

of 5

TAB

LE 6

SOIL

AN

ALY

TIC

AL

DA

TA -

DET

ECTE

D M

ETA

LS (T

OTA

L)Su

pple

men

tal I

nves

tigat

ion

for N

HE-

2 Lo

ng-T

erm

Tre

atm

ent

Nor

th H

olly

woo

d O

pera

ble

Uni

t

Loca

tion

Beryllium

Mercury

Cadmium


Sam

ple

Dep

th(fe

et

bgs)

Cobalt

Copper

Lead

Fiel

d Sa

mpl

e ID

Con

cent

ratio

ns (m

g/kg

)

Zinc

Sam

ple

Dat

e

Chromium

Molybdenum

Nickel

Selenium

Thallium

Vanadium

Arsenic

Barium

GW

-30-

11.0

-S-1

1031

111

11/0

3/11

3.01

70

.8

0.23

7 J

1.7

8.99

0.

11 J

4.88

10

.7

4.73

0.

0356

J1.

59

9.65

0.

63 J

0.20

2 J

19.8

43

.3

GW

-30-

21.0

-S-1

1031

121

11/0

3/11

0.55

9 J

74.7

<0

.218

<0.1

313.

63

0.19

J2.

93

7.71

1.

48

0.01

77 J

0.44

3 J

3.07

<0

.211

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4510

.8

26.6

G

W-3

0-31

.0-S

-110

311

3111

/03/

110.

763

J44

.4

<0.2

18<0

.131

3.58

0.

15 J

2.48

6.

08

1.33

0.

0163

J<0

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2.87

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4510

.3

19.1

G

W-3

0-41

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-110

311

4111

/03/

110.

549

J39

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18<0

.131

3.03

0.

11 J

2.14

4.

74

1.48

0.

0344

J0.

148

J2.

28

<0.2

11<0

.145

8.35

15

.9

GW

-30-

51.0

-S-1

1031

151

11/0

3/11

0.54

8 J

39.3

<0

.218

<0.1

314.

02

0.14

J2.

17

4.69

1.

16

0.01

29 J

0.33

6 J

2.52

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.211

<0.1

458.

23

20.5

G

W-3

0-70

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-110

311

70.5

11/0

3/11

0.85

1 J

132

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18<0

.131

6.07

0.

098

J4.

65

11.6

1.

51

0.02

4 J

0.40

8 J

4.88

<0

.211

<0.1

4520

.5

35.9

G

W-3

0-80

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-110

311

80.5

11/0

3/11

1.21

17

0 <0

.218

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3117

.1

0.14

J5.

78

12.9

1.

48

0.00

412

J0.

56 J

9.09

<0

.211

<0.1

4518

.4

37.5

G

W-3

0-91

.0-S

-110

411

9111

/04/

110.

922

J62

.3

<0.2

18<0

.131

4.42

0.

049

J2.

61

7.94

2.

12

0.03

47 J

0.83

1 J

4.07

<0

.211

<0.1

459.

56

21.7

G

W-3

0-10

1.0-

S-1

1041

110

111

/04/

111.

15

78.4

<0

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316.

88

0.08

5 J

3.38

8.

39

4.76

0.

0382

J0.

495

J4.

33

<0.2

11<0

.145

13.6

33

.3

GW

-30-

110.

5-S

-110

411

110.

511

/04/

111.

05

101

<0.2

18<0

.131

4.98

0.

026

J3.

66

10.5

2.

54

0.07

93 J

0.56

2 J

4.16

<0

.211

<0.1

4516

.6

31.7

G

W-3

0-12

0.5-

S-1

1041

112

0.5

11/0

4/11

0.68

3 J

62

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18<0

.131

2.32

0.

031

J1.

98

6.84

1.

1 0.

0235

J0.

164

J1.

82

<0.2

11<0

.145

7.85

29

.8

GW

-30-

130.

5-S

-110

411

130.

511

/04/

111.

12

71.2

J<0

.218

<0.1

314.

52

0.08

4 J

3.09

7.

88

2.31

0.

0423

J0.

732

J3.

64

<0.2

11<0

.145

12.3

24

.2

GW

-30-

DU

P01

-S-1

1041

113

111

/04/

111.

17

81

<0.2

18<0

.131

4.55

0.

094

J3.

11

9.14

2.

06

0.03

14 J

0.50

5 J

3.85

<0

.211

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4511

.9

26.3

G

W-3

0-14

0.5-

S-1

1041

114

0.5

11/0

4/11

0.52

1 J

49.2

<0

.218

<0.1

314.

48

0.04

2 J

2.2

5.87

1.

36

0.02

04 J

0.25

5 J

2.88

<0

.211

<0.1

458.

95

21

GW

-30-

150.

5-S

-110

411

150.

511

/04/

110.

905

J51

.7

<0.2

18<0

.131

3.92

0.

036

J2.

85

7 1.

74

0.01

7 J

0.79

4 J

3.48

<0

.211

<0.1

4511

.6

22.1

G

W-3

0-17

0.5-

S-1

1041

117

0.5

11/0

4/11

0.80

6 J

29.9

<0

.218

<0.1

313.

19

0.02

8 J

1.93

5

1.61

0.

0187

J<0

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2.45

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457.

88

12.8

G

W-3

0-18

0.5-

S-1

1071

118

0.5

11/0

7/11

0.97

9 J

70.3

J<0

.218

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3113

.4 J

0.05

90 J

4.38

J13

.1 J

2.64

J0.

0835

J2.

59

5.89

J<0

.211

<0.1

4515

.5 J

28.3

G

W-3

0-D

UP

02-S

-110

711

181

11/0

7/11

0.56

2 J

51.5

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.218

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314.

66

0.09

4 J

2.73

6.

42

1.52

0.

0219

J<0

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3.15

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4511

.2

24.5

G

W-3

0-19

0.5-

S-1

1071

119

0.5

11/0

7/11

0.44

8 J

55.6

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312.

52

0.08

4 J

3.11

5.

49

1.78

0.

0322

J<0

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2.34

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4511

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22.6

G

W-3

0-20

0.5-

S-1

1071

120

0.5

11/0

7/11

1.26

11

2 0.

323

J0.

134

J9.

94

0.12

J6.

46

13.4

3.

58

0.05

63 J

0.38

8 J

7.55

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4524

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42.6

G

W-3

0-D

UP

03-S

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711

201

11/0

7/11

1.1

91.3

0.

27 J

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318.

4 0.

099

J5.

9 11

.4

3.04

0.

0369

J0.

148

J6.

73

<0.2

11<0

.145

21.6

39

.2

GW

-30-

210.

5-S

-110

711

210.

511

/07/

110.

766

J69

.1

<0.2

18<0

.131

6.39

0.

078

J4.

06

8.39

2.

08

0.02

67 J

<0.1

054.

71

<0.2

11<0

.145

15

27.6

GW

-30

Pag

e 2

of 5

TAB

LE 6

SOIL

AN

ALY

TIC

AL

DA

TA -

DET

ECTE

D M

ETA

LS (T

OTA

L)Su

pple

men

tal I

nves

tigat

ion

for N

HE-

2 Lo

ng-T

erm

Tre

atm

ent

Nor

th H

olly

woo

d O

pera

ble

Uni

t

Loca

tion

Beryllium

Mercury

Cadmium


Sam

ple

Dep

th(fe

et

bgs)

Cobalt

Copper

Lead

Fiel

d Sa

mpl

e ID

Con

cent

ratio

ns (m

g/kg

)

Zinc

Sam

ple

Dat

e

Chromium

Molybdenum

Nickel

Selenium

Thallium

Vanadium

Arsenic

Barium

GW

-31-

11.5

-S-1

1081

111

.511

/08/

111.

14

69.4

<0

.218

0.4

J12

0.

36 J

5.36

12

.5

12.2

0.

0616

J0.

317

J7.

44

<0.2

11<0

.145

19.5

56

.7

GW

-31-

21.5

-S-1

1081

121

.511

/08/

112.

01

41.7

<0

.218

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315.

03

0.03

4 J

2.49

5.

97

1.37

0.

0207

J0.

241

J3.

15

<0.2

11<0

.145

11.2

17

.5

GW

-31-

31-S

-110

811

3111

/08/

110.

504

J42

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<0.2

18<0

.131

5.01

0.

087

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62

6.21

1.

45

0.12

5 0.

215

J3.

68

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11<0

.145

9.69

18

.2

GW

-31-

41.5

-S-1

1081

141

.511

/08/

110.

697

J63

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<0.2

18<0

.131

4.85

0.

07 J

3.63

7.

55

1.85

0.

0085

3 J

0.13

9 J

3.86

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4514

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25.1

G

W-3

1-51

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811

51.5

11/0

8/11

1.12

45

<0

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315.

33

0.04

8 J

2.63

5.

76

1.5

0.01

24 J

0.29

6 J

3.58

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459.

59

17.8

G

W-3

1-61

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-110

811

61.5

11/0

8/11

0.52

J60

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18<0

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4.51

0.

08 J

3.35

9.

72

1.39

0.

0075

8 J

0.12

8 J

3.47

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<0.1

4511

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23.5

G

W-3

1-71

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1081

171

11/0

8/11

0.90

6 J

80.7

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317.

29

0.14

J4.

16

9.99

1.

63

0.01

59 J

0.61

6 J

7.02

<0

.211

<0.1

4516

.3

27

GW

-31-

81-S

-110

811

8111

/08/

110.

457

J95

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18<0

.131

6.66

0.

069

J4.

32

11.1

1.

61

0.01

12 J

0.34

7 J

5.44

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4517

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30.5

G

W-3

1-90

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911

90.5

11/0

9/11

0.58

4 J

93.7

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316.

51

0.06

4 J

3.75

10

.1

2.09

0.

0434

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588

J4.

74

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11<0

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14.4

41

.8

GW

-31-

101-

S-1

1091

110

111

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110.

755

J78

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18<0

.131

6.59

0.

11 J

3.42

9.

21

2.1

0.03

94 J

0.65

7 J

4.35

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4513

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25.2

G

W-3

1-11

1-S

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911

111

11/0

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1.11

J11

3 <0

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318.

92 J

0.01

30 J

4.98

14

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3.09

0.

0633

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47 J

5.54

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4520

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39.7

J-

GW

-31-

DU

P01

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1091

111

1.5

11/0

9/11

0.78

9 J

96.4

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315.

29

0.07

6 J

4.14

11

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2.84

0.

0488

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635

J4.

35

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11<0

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16.6

39

.4

GW

-31-

121-

S-1

1091

112

111

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110.

616

J59

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314.

64

0.06

6 J

2.65

6.

71

1.93

0.

0306

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725

J3.

39

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10.9

27

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GW

-31-

131.

5-S

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911

131.

511

/09/

110.

836

J79

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18<0

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9.33

0.

13 J

3.66

8.

64

1.82

0.

0426

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898

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03

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11<0

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13.6

28

.5

GW

-31-

141.

5-S

-110

911

141.

511

/09/

110.

553

J53

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7.79

0.

087

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91

8.37

1.

6 0.

0158

J0.

95 J

3.15

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4510

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28.9

G

W-3

1-15

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S-1

1091

115

1.5

11/0

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0.46

1 J

63.7

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314.

1 0.

13 J

2.82

6.

64

1.34

0.

0123

J0.

368

J2.

87

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11<0

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12.4

30

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GW

-31-

161.

5-S

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011

161.

511

/10/

110.

588

J62

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18<0

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4.06

0.

027

J3

6.97

1.

92

0.02

77 J

0.30

9 J

3.01

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4511

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24.1

G

W-3

1-D

UP

02-S

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011

161.

511

/10/

11N

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CN

CG

W-3

1-17

1-S

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011

171

11/1

0/11

0.76

1 J

54.8

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316.

24

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3.21

6.

6 1.

81

0.03

69 J

0.43

J3.

47

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11<0

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12.2

20

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GW

-31-

181.

5-S

-111

011

181.

511

/10/

110.

574

J75

<0

.218

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314.

57

0.07

1 J

2.86

5.

79

2.22

0.

0249

J0.

326

J2.

56

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11<0

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12.4

29

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GW

-31-

190.

5-S

-111

011

190.

511

/10/

110.

596

J54

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85

6.5

1.77

0.

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384

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8 <0

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4510

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27.6

G

W-3

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11/1

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0.

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4 <0

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4513

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24.2

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W-3

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UP

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201.

511

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110.

667

J57

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0.

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6 0.

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22.8

G

W-3

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211

11/1

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0.60

7 J

65.7

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314.

05

0.05

2 J

2.58

5.

81

1.52

0.

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126

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95

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9.36

18

.7

GW

-31-

220.

5-S

-111

011

220.

511

/10/

110.

607

J56

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.131

5.5

0.05

1 J

3.08

7.

01

1.9

0.02

79 J

0.15

7 J

3.61

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4511

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21.1

G

W-3

1-23

1.5-

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1101

123

1.5

11/1

0/11

0.73

5 J

52

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3.3

0.05

1 J

2.7

6.89

2.

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0.02

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052.

72

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10.9

21

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GW

-31

Pag

e 3

of 5

TAB

LE 6

SOIL

AN

ALY

TIC

AL

DA

TA -

DET

ECTE

D M

ETA

LS (T

OTA

L)Su

pple

men

tal I

nves

tigat

ion

for N

HE-

2 Lo

ng-T

erm

Tre

atm

ent

Nor

th H

olly

woo

d O

pera

ble

Uni

t

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tion

Beryllium

Mercury

Cadmium


Sam

ple

Dep

th(fe

et

bgs)

Cobalt

Copper

Lead

Fiel

d Sa

mpl

e ID

Con

cent

ratio

ns (m

g/kg

)

Zinc

Sam

ple

Dat

e

Chromium

Molybdenum

Nickel

Selenium

Thallium

Vanadium

Arsenic

Barium

GW

-33B

-11-

S-1

1171

111

11/1

7/11

0.69

5 J

51.2

J<0

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314.

63 J

0.09

2 J

3.45

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8 J

1.58

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0114

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131

J3.

53 J

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11.6

20

.2

GW

-33B

-DU

P01

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1171

111

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110.

753

J35

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3.13

0.

084

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32

5.01

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16

0.01

58 J

0.17

6 J

2.66

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459.

21

19.5

G

W-3

3B-2

1.5-

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1171

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110.

538

J41

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0.

083

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56

1.23

0.

0151

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126

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84

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8.54

17

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GW

-33B

-31.

5-S

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711

31.5

11/1

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0.47

9 J

37.2

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58

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42

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457.

18

18.1

G

W-3

3B-4

1.5-

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1171

141

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110.

824

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99

6.39

1.

33

0.01

72 J

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053.

41

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11.8

21

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GW

-33B

-50.

5-S

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711

50.5

11/1

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0.64

5 J

45.3

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27

0.07

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64

1.05

0.

0137

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458.

08

15.8

G

W-3

3B-6

0.5-

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1171

160

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53 J

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66

0.06

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1.

02

0.00

905

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491

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21

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7.07

22

.6

GW

-33B

-71-

S-1

1171

171

11/1

7/11

0.78

2 J

84.6

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316.

17

0.15

J3.

69

9.72

2.

04

0.03

47 J

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6 J

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4513

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24.7

G

W-3

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711

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691

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91

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02

1.75

0.

0197

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418

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34

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16.3

30

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GW

-33B

-91-

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1171

191

11/1

7/11

1.17

10

9 <0

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318.

07

0.09

4 J

4.87

12

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2.85

0.

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302

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4518

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35.1

G

W-3

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01.5

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110

1.5

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1.15

11

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97

0.06

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11

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3.73

0.

0219

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544

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58

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17.6

34

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GW

-33B

-111

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1171

111

111

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111

79.6

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314.

53

0.05

6 J

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10.2

2.

11

0.03

56 J

0.43

9 J

3.49

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4513

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31

GW

-33B

-120

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-111

711

120.

511

/17/

111.

57

85.8

0.

224

J<0

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6.85

0.

099

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89

10.8

2.

76

0.05

24 J

0.80

9 J

4.32

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4515

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28.5

G

W-3

3B-1

31.5

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1171

113

1.5

11/1

7/11

0.85

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112

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2.88

0.

087

J3.

61

7.62

1.

81

0.03

01 J

0.11

4 J

2.9

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14.4

28

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GW

-33B

-141

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1171

114

111

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111.

25

68

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18<0

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3.93

0.

087

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38

10.1

3.

52

0.06

25 J

0.11

8 J

3.17

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4513

32

.7

GW

-33B

-151

-S-1

1171

115

111

/17/

110.

36 J

29.7

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317.

45

0.09

6 J

2.24

8.

17

2.4

0.00

566

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707

J2.

49

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11<0

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5.47

16

.5

GW

-33B

-161

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1181

116

111

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110.

419

J34

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18<0

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2.18

0.

061

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4.18

1.

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455.

95

13.7

G

W-3

3B-1

71-S

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811

171

11/1

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1.94

30

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4.52

0.

029

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96

7.43

2.

05

0.01

13 J

0.72

9 J

2.04

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457.

76

27

GW

-33B

-181

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811

181.

511

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111.

06

78.3

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315.

04

0.05

5 J

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84

2.22

0.

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4517

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32.5

G

W-3

3B-D

UP

02-S

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811

182

11/1

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0.96

1 J

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17

0.06

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89

9.19

2.

08

0.01

72 J

0.55

6 J

4.02

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4514

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28.8

G

W-3

3B-1

91-S

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811

191

11/1

8/11

0.59

7 J

54.2

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313.

18

0.04

1 J

2.77

5.

21

1.49

0.

0239

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281

J2.

35

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11<0

.145

10.2

19

.1

GW

-33B

-201

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1181

120

111

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112.

42

140

0.44

5 J

0.13

9 J

15.1

0.

064

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63

19.2

5.

66

0.03

99 J

0.35

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12.3

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4530

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57.5

G

W-3

3B-2

11-S

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811

211

11/1

8/11

1.48

96

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0.26

2 J

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319.

69

0.07

4 J

6.43

12

.9

3.35

0.

0346

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348

J7.

86

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11<0

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20.4

36

.4

GW

-33B

-221

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1181

122

111

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110.

686

J49

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3.7

0.02

2 J

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93

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145

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3 J

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459.

7 22

G

W-3

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231

11/1

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0.

223

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0.

046

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31

9.19

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35

0.05

11 J

0.26

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4517

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29.4

G

W-3

3B-2

40.5

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1181

124

0.5

11/1

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0.54

9 J

44.6

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313.

75

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2.85

6.

65

1.77

0.

0259

J0.

143

J2.

87

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11<0

.145

11.6

21

.9

GW

-33B

Pag

e 4

of 5

TAB

LE 6

SOIL

AN

ALY

TIC

AL

DA

TA -

DET

ECTE

D M

ETA

LS (T

OTA

L)Su

pple

men

tal I

nves

tigat

ion

for N

HE-

2 Lo

ng-T

erm

Tre

atm

ent

Nor

th H

olly

woo

d O

pera

ble

Uni

t

Loca

tion

Beryllium

Mercury

Cadmium


Sam

ple

Dep

th(fe

et

bgs)

Cobalt

Copper

Lead

Fiel

d Sa

mpl

e ID

Con

cent

ratio

ns (m

g/kg

)

Zinc

Sam

ple

Dat

e

Chromium

Molybdenum

Nickel

Selenium

Thallium

Vanadium

Arsenic

Barium

GW

-34-

11.0

-S-1

1171

111

11/1

7/11

0.68

3 J

53.1

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316.

3 0.

098

J3.

79

6.87

1.

91

0.02

14 J

0.77

6 J

4.16

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4511

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31.2

G

W-3

4-21

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711

2111

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110.

546

J81

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3.35

0.

092

J2.

15

4.67

1.

26

0.01

12 J

0.11

4 J

2.78

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457.

92

28.9

G

W-3

4-31

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711

3111

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110.

642

J49

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4.26

0.

15 J

2.66

5.

68

1.51

0.

0166

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217

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09

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10.2

20

G

W-3

4-41

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711

4111

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110.

893

J49

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4.96

0.

079

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64

5.9

1.6

0.01

92 J

0.46

J3.

31

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11<0

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10.2

19

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GW

-34-

51.0

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1171

151

11/1

7/11

0.70

1 J

39.5

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313.

34

0.09

J2.

39

6.3

1.23

0.

022

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213

J2.

61

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11<0

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8.73

15

.7

GW

-34-

61.0

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1181

161

11/1

8/11

0.60

9 J

57.3

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316.

98

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3.43

8.

15

1.95

0.

014

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451

J4.

16

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11<0

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11.3

25

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GW

-34-

71.0

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1181

171

11/1

8/11

0.61

1 J

58.8

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315.

79

0.04

6 J

2.82

6.

93

1.82

0.

0152

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829

J3.

39

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11<0

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12.7

26

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GW

-34-

80.5

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1181

180

.511

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110.

356

J81

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3.68

0.

057

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92

8.21

1.

64

0.01

69 J

0.28

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458.

85

35.7

G

W-3

4-90

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90.5

11/1

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0.66

2 J

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96

0.07

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7.

31

2.11

0.

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383

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29

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15.7

26

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GW

-34-

110.

5-S

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811

110.

511

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110.

448

J48

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2.7

0.04

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1.49

3.

61

1.49

0.

0336

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157

J2.

02

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11<0

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5.81

17

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GW

-34-

120.

5-S

-111

811

120.

511

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111.

58

95.6

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314.

05

0.04

8 J

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9.85

2.

2 0.

0217

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8 J

24.4

35

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GW

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130.

5-S

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811

130.

511

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111.

09

63.3

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316.

13

0.06

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48

2.59

0.

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4512

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27.5

G

W-3

4-14

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114

0.5

11/1

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46

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8.

39

1.41

0.

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J3.

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11.9

20

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GW

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150.

0-S

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811

150

11/1

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1.12

J56

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511

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0.

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125

J1.

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5.75

17

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GW

-34-

160.

5-S

-112

111

160.

511

/21/

110.

621

J53

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87

6.82

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63

0.06

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4511

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24.1

G

W-3

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25

0.1

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4.88

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24

19.8

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W-3

4-17

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117

0.5

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9 J

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36

0.07

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61

7.24

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92

0.05

69 J

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4510

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27.4

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W-3

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73

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0.02

25 J

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34

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14.8

25

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GW

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5-S

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111

190.

511

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111.

48

96.9

0.

293

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0.03

54 J

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4524

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40.9

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W-3

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0.5

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1.36

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0.

259

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40.2

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W-3

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44

19.3

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24 J

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kg -

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per k

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show

n

GW

-34

Pag

e 5

of 5

TABLE 7SOIL ANALYTICAL DATA - EMERGING CHEMICALS


1,2,3-Trichloropropane 1,4-Dioxane n-Nitrosodimethylamine Perchlorate(EPA 8260B/5035B) (EPA 8270C-SIM) (EPA 8270C-SIM) (EPA 314)

SB-30-11.0-S-103111 11 10/31/11 <0.67 <27 < 0.054 <4.77SB-30-21.0-S-103111 21 10/31/11 <0.68 <27 <0.054 <4.77SB-30-31.0-S-103111 31 10/31/11 <0.67 <27 0.079 J <4.77SB-30-41.0-S-103111 41 10/31/11 <0.58 <27 <0.054 <4.77SB-30-51.0-S-103111 51 10/31/11 <0.59 <27 < 0.054 <4.77SB-30-60.5-S-103111 60.5 10/31/11 <0.61 <27 < 0.054 <4.77SB-30-70.5-S-103111 70.5 10/31/11 <0.63 <27 < 0.054 <4.77SB-30-125.5-S-110111 125.5 11/01/11 <0.64 <27 <0.054 <4.77SB-30-185.0-S-110111 185 11/01/11 <0.7 <27 <0.054 <4.77SB-30-DUP01-S-110111 185.5 11/01/11 <0.67 <27 <0.054 <4.77SB-30-200.5-S-110111 200.5 11/01/11 <0.65 <27 <0.054 <4.77SB-30-225.0-S-110111 225 11/01/11 <0.61 <27 <0.054 <4.77SB-30-250.0-S-110211 250 11/02/11 <0.62 <27 <0.054 <4.77SB-31-11.0-S-102611 11 10/26/11 <0.67 <27 <0.054 <4.77SB-31-21.0-S-102611 21 10/26/11 <0.69 <27 <0.054 <4.77SB-31-31.0-S-102611 31 10/26/11 <0.67 <27 <0.054 <4.77SB-31-70.5-S-102611 70.5 10/26/11 <0.61 <27 <0.054 <4.77SB-31-90.5-S-102611 90.5 10/26/11 <0.56 <27 <0.054 <4.77SB-31-100.5-S-102611 100.5 10/26/11 <0.55 <27 <0.054 <4.77SB-31-125.5-S-102711 125.5 10/27/11 <0.59 <27 0.18 J <4.77SB-31-150.5-S-102711 150.5 10/27/11 <0.65 <27 <0.054 <4.77SB-31-175.5-S-102711 175.5 10/27/11 <0.64 <27 0.08 J <4.77SB-31-200.5-S-102711 200.5 10/27/11 <0.66 <27 0.066 J <4.77SB-31-DUP01-S-102711 201 10/27/11 <0.64 <27 <0.054 <4.77SB-31-225.5-S-102711 225.5 10/27/11 <0.61 <27 <0.054 <4.77SB-31-250.5-S-102711 250 10/27/11 <0.59 <27 <0.054 <4.77GW-30-11.0-S-110311 11 11/03/11 <0.64 <27 <0.054 <4.77GW-30-21.0-S-110311 21 11/03/11 <0.61 <27 <0.054 <4.77GW-30-31.0-S-110311 31 11/03/11 <0.66 <27 < 0.054 <4.77GW-30-41.0-S-110311 41 11/03/11 <0.66 <27 <0.054 <4.77GW-30-51.0-S-110311 51 11/03/11 <0.64 <27 <0.054 <4.77GW-30-70.5-S-110311 70.5 11/03/11 <0.71 <27 <0.054 <4.77GW-30-80.5-S-110311 80.5 11/03/11 <0.61 <27 0.18 J <4.77GW-30-91.0-S-110411 91 11/04/11 <0.69 <27 < 0.054 <4.77GW-30-101.0-S-110411 101 11/04/11 <0.58 <27 < 0.054 <4.77GW-30-110.5-S-110411 110.5 11/04/11 <0.6 <27 < 0.054 <4.77GW-30-120.5-S-110411 120.5 11/04/11 <0.59 <27 < 0.054 <4.77GW-30-130.5-S-110411 130.5 11/04/11 <0.73 <27 < 0.054 <4.77GW-30-DUP01-S-110411 131 11/04/11 <0.68 <27 < 0.054 <4.77GW-30-140.5-S-110411 140.5 11/04/11 <0.57 <27 < 0.054 <4.77GW-30-150.5-S-110411 150.5 11/04/11 <0.6 <27 < 0.054 <4.77GW-30-170.5-S-110411 170.5 11/04/11 <0.66 <27 < 0.054 <4.77GW-30-180.5-S-110711 180.5 11/07/11 <0.55 <27 < 0.054 <4.77GW-30-DUP02-S-110711 181 11/07/11 <0.59 <27 < 0.054 <4.77GW-30-190.5-S-110711 190.5 11/07/11 <0.67 <27 < 0.054 <4.77GW-30-200.5-S-110711 200.5 11/07/11 <0.58 <27 < 0.054 <4.77GW-30-DUP03-S-110711 201 11/07/11 <0.61 <27 < 0.054 <4.77GW-30-210.5-S-110711 210.5 11/07/11 <0.69 <27 < 0.054 <4.77GW-31-11.5-S-110811 11.5 11/08/11 <0.66 <27 < 0.054 <4.77GW-31-21.5-S-110811 21.5 11/08/11 <0.77 <27 < 0.054 <4.77GW-31-31-S-110811 31 11/08/11 <0.73 <27 < 0.054 <4.77GW-31-41.5-S-110811 41.5 11/08/11 <0.71 <27 < 0.054 <4.77GW-31-51.5-S-110811 51.5 11/08/11 <0.69 <27 < 0.054 <4.77GW-31-61.5-S-110811 61.5 11/08/11 <0.68 <27 < 0.054 <4.77GW-31-71-S-110811 71 11/08/11 <0.7 22,000 < 0.054 <4.77GW-31-81-S-110811 81 11/08/11 <0.72 24,000 < 0.054 <4.77GW-31-90.5-S-110911 90.5 11/09/11 NC <27 < 0.054 <4.77GW-31-101-S-110911 101 11/09/11 <0.66 <27 < 0.054 <4.77GW-31-111-S-110911 111 11/09/11 NC <27 < 0.054 <4.77GW-31-DUP01-S-110911 111.5 11/09/11 NC <27 < 0.054 <4.77GW-31-121-S-110911 121 11/09/11 NC <27 < 0.054 <4.77GW-31-131.5-S-110911 131.5 11/09/11 NC <27 < 0.054 <4.77GW-31-141.5-S-110911 141.5 11/09/11 NC <27 < 0.054 <4.77GW-31-151.5-S-110911 151.5 11/09/11 NC <27 < 0.054 <4.77GW-31-161.5-S-111011 161.5 11/10/11 <0.72 <27 <0.054 <4.77GW-31-DUP02-S-111011 161.5 11/10/11 <0.76 NC NC NCGW-31-171-S-111011 171 11/10/11 <0.64 <27 <0.054 <4.77GW-31-181.5-S-111011 181.5 11/10/11 <0.62 <27 <0.054 <4.77GW-31-190.5-S-111011 190.5 11/10/11 <0.7 <27 < 0.054 <4.77GW-31-201-S-111011 201 11/10/11 <0.75 <27 <0.054 <4.77GW-31-DUP03-S-111011 201.5 11/10/11 <0.74 <27 <0.054 <4.77GW-31-211-S-111011 211 11/10/11 <0.73 52 J <0.054 <4.77GW-31-220.5-S-111011 220.5 11/10/11 <0.72 <27 < 0.054 <4.77GW-31-231.5-S-111011 231.5 11/10/11 <0.72 <27 < 0.054 <4.77

Concentrations (g/kg)Location Field Sample ID

SampleDepth

(feet bgs)

Sample Date

SB-30

SB-31

GW-30

GW-31

Page 1 of 2

TABLE 7SOIL ANALYTICAL DATA - EMERGING CHEMICALS


1,2,3-Trichloropropane 1,4-Dioxane n-Nitrosodimethylamine Perchlorate(EPA 8260B/5035B) (EPA 8270C-SIM) (EPA 8270C-SIM) (EPA 314)

Concentrations (g/kg)Location Field Sample ID

SampleDepth

(feet bgs)

Sample Date

GW-33B-11-S-111711 11 11/17/11 <0.66 <27 <0.054 <4.77GW-33B-DUP01-S-111711 11.5 11/17/11 <0.65 <27 1.7 J <4.77GW-33B-21.5-S-111711 21.5 11/17/11 <0.71 <27 <0.054 <4.77GW-33B-31.5-S-111711 31.5 11/17/11 <0.79 <27 0.52 J <4.77GW-33B-41.5-S-111711 41.5 11/17/11 <0.75 <27 <0.054 <4.77GW-33B-50.5-S-111711 50.5 11/17/11 <0.69 <27 <0.054 <4.77GW-33B-60.5-S-111711 60.5 11/17/11 NC <27 <0.054 <4.77GW-33B-71-S-111711 71 11/17/11 <0.68 <27 <0.054 <4.77GW-33B-81-S-111711 81 11/17/11 NC <27 < 0.054 <4.77GW-33B-91-S-111711 91 11/17/11 NC <27 <0.054 <4.77GW-33B-101.5-S-111711 101.5 11/17/11 NC <27 <0.054 <4.77GW-33B-111-S-111711 111 11/17/11 NC <27 <0.054 <4.77GW-33B-120.5-S-111711 120.5 11/17/11 NC <27 <0.054 <4.77GW-33B-131.5-S-111711 131.5 11/17/11 NC <27 <0.054 <4.77GW-33B-141-S-111711 141 11/17/11 NC <27 <0.054 <4.77GW-33B-151-S-111711 151 11/17/11 NC <27 0.63 J <4.77GW-33B-161-S-111811 161 11/18/11 <0.8 <27 <0.054 <4.77GW-33B-171-S-111811 171 11/18/11 NC <27 <0.054 <4.77GW-33B-181.5-S-111811 181.5 11/18/11 <0.7 <27 <0.054 <4.77GW-33B-DUP02-S-111811 182 11/18/11 <0.74 <27 <0.054 <4.77GW-33B-191-S-111811 191 11/18/11 <0.79 <27 <0.054 <4.77GW-33B-201-S-111811 201 11/18/11 <0.6 <27 <0.054 <4.77GW-33B-211-S-111811 211 11/18/11 <0.75 <27 <0.054 <4.77GW-33B-221-S-111811 221 11/18/11 <0.75 <27 <0.054 <4.77GW-33B-231-S-111811 231 11/18/11 <0.7 <27 <0.054 <4.77GW-33B-240.5-S-111811 240.5 11/18/11 NC <27 <0.054 <4.77GW-34-11.0-S-111711 11 11/17/11 <0.61 <27 0.18 J <4.77GW-34-21.0-S-111711 21 11/17/11 <0.65 <27 <0.054 <4.77GW-34-31.0-S-111711 31 11/17/11 <0.63 <27 < 0.054 <4.77GW-34-41.0-S-111711 41 11/17/11 <0.65 <27 < 0.054 <4.77GW-34-51.0-S-111711 51 11/17/11 <0.72 <27 < 0.054 <4.77GW-34-61.0-S-111811 61 11/18/11 <0.76 <27 <0.054 <4.77GW-34-71.0-S-111811 71 11/18/11 <0.77 <27 <0.054 <4.77GW-34-80.5-S-111811 80.5 11/18/11 <0.93 <27 <0.054 <4.77GW-34-90.5-S-111811 90.5 11/18/11 <0.62 <27 <0.054 <4.77GW-34-110.5-S-111811 110.5 11/18/11 <0.69 <27 <0.054 <4.77GW-34-120.5-S-111811 120.5 11/18/11 <0.56 <27 <0.054 <4.77GW-34-130.5-S-111811 130.5 11/18/11 <0.57 <27 <0.054 <4.77GW-34-140.5-S-111811 140.5 11/18/11 <0.72 <27 <0.054 <4.77GW-34-150.0-S-111811 150 11/18/11 <0.85 <27 <0.054 <4.77GW-34-DUP01-S-111811 150.5 11/18/11 <0.71 <27 <0.054 <4.77GW-34-160.5-S-112111 160.5 11/21/11 <0.63 <27 < 0.054 <4.77GW-34-DUP02-S-112111 161 11/21/11 <0.62 <27 < 0.054 <4.77GW-34-170.5-S-112111 170.5 11/21/11 <0.76 <27 <0.054 <4.77GW-34-180.5-S-112111 180.5 11/21/11 <0.59 <27 < 0.054 <4.77GW-34-190.5-S-112111 190.5 11/21/11 <0.63 <27 < 0.054 <4.77GW-34-200.5-S-112111 200.5 11/21/11 <0.64 <27 <0.054 <4.77GW-34-210.5-S-112111 210.5 11/21/11 <0.75 <27 < 0.054 <4.77GW-34-220.5-S-112111 220.5 11/21/11 0.75 J <27 <0.054 <4.77GW-34-DUP03-S-112111 221 11/21/11 <0.7 <27 < 0.054 <4.77GW-34-230.5-S-112111 230.5 11/21/11 <0.65 <27 < 0.054 <4.77

RSL: 95 17,000 34 720,000Notes:bgs - Below ground surfaceEPA - U.S. Environmental Protection AgencyJ - result is estimatedg/kg - Micrograms per kilogram

RSL - EPA Region 9 Regional Screening Levels, Industrial Scenario (effective November 2011)

< - Not detected above the method detection limit shownNC - Not collected due to gravelly materials

GW-34

GW-33B

Page 2 of 2

1,1,1-Trichloroethane

1,1-Dichloroethane

1,1-Dichloroethene

1,2-Dichloroethane

Bromodichloromethane

c-1,2-Dichloroethene

Carbon Tetrachloride

Chloroform

Dibromochloromethane

Dichlorodifluoromethane

Tetrachloroethene

Toluene

Trichloroethene

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e 07

/27/

11)

b Cal

iforn

ia D

epar

tmen

t of H

ealth

Ser

vice

s N

otifi

catio

n Le

vel (

effe

ctiv

e 12

/14/

10)

c Cal

iforn

ia D

epar

tmen

t of H

ealth

Ser

vice

s S

econ

dary

MC

L (e

ffect

ive

09/2

7/06

)S

ampl

es a

naly

zed

usin

g U

.S. E

nviro

nmen

tal P

rote

ctio

n A

genc

y (E

PA

) Met

hods

602

0/74

70A

and

for h

exav

alen

t chr

omiu

m u

sing

EP

A M

etho

d 71

99

DU

P -

Dup

licat

e sa

mpl

e co

llect

ed im

med

iate

ly b

elow

prim

ary

sam

ple

J - R

esul

t is

estim

ated

MC

L - C

alifo

rnia

Dep

artm

ent o

f Hea

lth S

ervi

ces

Max

imum

Con

tam

inan

t Lev

el (e

ffect

ive

07/2

7/11

)µg

/L -

Mic

rogr

ams

per l

iter

< - N

ot d

etec

ted

abov

e th

e m

etho

d de

tect

ion

limit

show

n

GW

-32

Fiel

d Sa

mpl

e ID

Loca

tion

Con

cent

ratio

ns (µ

g/L)

Sam

ple

Dat

e

Pag

e 1

of 1

TAB

LE 1

0G

RO

UN

DW

ATE

R A

NA

LYTI

CA

L D

ATA

- EM

ERG

ING

CH

EMIC

ALS

Supp

lem

enta

l Inv

estig

atio

n fo

r NH

E-2

Long

-Ter

m T

reat

men

tN

orth

Hol

lyw

ood

Ope

rabl

e U

nit

1,2,

3-Tr

ichl

orop

ropa

ne

1,4-

Dio

xane

N

-Nitr

osod

imet

hyla

min

e Pe

rchl

orat

e (S

RL

524M

-TC

P)(E

PA 8

270C

SIM

)(E

PA 1

625C

)(E

PA 3

14.0

)G

W-3

0G

W-3

0-12

2111

12/2

1/11

<0.0

025

17

<0.9

3<0

.36

GW

-31

GW

-31-

1221

1112

/21/

11<0

.002

511

<0

.93

<0.3

6G

W-3

2-12

2111

12/2

1/11

<0.0

025

45

<0.9

3<0

.36

DU

P-1

2211

112

/21/

11<0

.002

547

<0

.93

<0.3

6G

W-3

3AG

W-3

3A-1

2211

112

/21/

11<0

.002

53.

7 <0

.93

<0.3

6G

W-3

3BG

W-3

3B-1

2211

112

/21/

11<0

.002

5<0

.28

<0.9

3<0

.36

GW

-34

GW

-34-

1221

1112

/21/

11<0

.002

58.

2 <0

.93

<0.3

6M

CL:

0.00

5a1a

0.01

a6

Not

es:

a Cal

iforn

ia D

epar

tmen

t of H

ealth

Ser

vice

s N

otifi

catio

n Le

vel (

effe

ctiv

e 12

/14/

10)

DU

P -

Dup

licat

e sa

mpl

e co

llect

ed im

med

iate

ly b

elow

prim

ary

sam

ple

EP

A -

U.S

. Env

ironm

enta

l Pro

tect

ion

Age

ncy

MC

L - C

alifo

rnia

Dep

artm

ent o

f Hea

lth S

ervi

ces

Max

imum

Con

tam

inan

t Lev

el (e

ffect

ive

07/2

7/11

)µg

/L -

Mic

rogr

ams

per l

iter

SR

L -

< - N

ot d

etec

ted

abov

e th

e m

etho

d de

tect

ion

limit

show

n

GW

-32

Con

cent

ratio

ns (µ

g/L)

Sam

ple

Dat

eFi

eld

Sam

ple

IDLo

catio

n

Pag

e 1

of 1

APPENDIX A

PERMITS

APPENDIX B

BORING LOGS

0.0

0.0

Asphalt pavement.Silty SAND, brown (10YR 5/3), moist, fine to medium, few coarse, angular tosubrounded sand, non-plastic silt, few gravel is fine to coarse, subangular tosubrounded, granitic, up to 1.5".

Well graded SAND w/gravel, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic, up to1", trace non-plastic silt.

At 15', color change to yellowish brown (10YR 5/4), gravel up to 2".

At 20', becomes SAND, color change to light yellowish brown (10YR 6/4), fewgravel, fine to medium sand, few coarse sand.

SM

SW

222628

212827

Casing: Diameter NA

COMMENTSBorehole backfilled withcement-bentonite grout.SB-30 is located 24' North ofsouthern property boundary and195' West of eastern propertyboundary.

Surface Elev. NA

Drill Co. WDC Exploration and Wells

Completion Date 11/2/2011

Driller Miguel Grijalva

Start Date 10/31/2011

Bentonite Grout

Drilling Method Mud Rotary

Driller Reg. # C57-283326

Screen: Diameter NA

Type NALength NA

Length NA Type/Size NAHole Diameter 9.0 in

Cement Grout

Water Level Initial NA

North NA East NA

Hole Depth 250.0 ft

Top of Casing NA

Log By Adam Norris

Bentonite Seal Sand Pack

Sand Pack NA

Static

Checked By M. Flaugher, P.G.

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 9

Drilling Log

Project Number 1012268Location 11600 Sherman Way, North Hollywood, CA

Project Supplemental Investigation Owner Honeywell

Geologic Descriptions are Based on the USCS.

(Color, Moisture, Texture, Structure, Odor)

Description

Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

100%

40%SB-30-11.0-

S-103111

100%

100%

47%SB-30-21.0-

S-103111

0.0

0.0

0.0

At 25', becomes SAND w/gravel, color change to yellowish brown (10YR 5/4), fineto coarse sand.

At 30', becomes SAND, color change to greyish brown (10YR 5/2), few gravel.

At 35', becomes SAND w/gravel, color change to yellowish brown (10YR 5/4),gravel is volcanic and granitic detrital.

At 40', color change to greyish brown (10YR 5/2).

At 45', color change to yellowish brown (10YR 5/4), gravel is granitic detrital.


SW

273032

283435

222831

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 9

Drilling Log



Continued


(Color, Moisture, Texture, Structure, Odor)Description

Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

47%SB-30-31.0-

S-103111

100%

100%

40%SB-30-41.0-

S-103111

100%

100%

40%SB-30-51.0-

S-103111

100%

0.0

0.0

At 60', color change to dark greyish brown (10YR 4/2), fine to medium sand, fewcoarse, gravel is granitic and volcanic up to 1.5".

At 65', increase in gravel content, granitic gravel up to 3".

Some local granitic cobbles, up to 4".


At 75', color change to light brownish grey (10YR 6/2), decrease in gravel content,granitic gravel up to 2".

Well graded GRAVEL w/sand, greyish brown (10YR 5/2), fine to coarse, subangularto subrounded, granitic gravel up to 3", sand is fine to coarse, angular tosubrounded, trace non-plastic silt.

Some local granitic cobbles, up to 4".

SW

GW

SW

3542

2831

3540

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

60%SB-30-60.5-

S-103111

100%

100%

50%SB-30-70.5-

S-103111

100%

100%

0%

100%

Well graded SAND w/gravel, dark greyish brown (10YR 4/2), fine to coarse, angularto subrounded sand, gravel is fine to coarse, subangular to subrounded, granitic andvolcanic, up to 3", trace non-plastic silt.

At 95', color change to greyish brown (10YR 5/2), increase in gravel content.

Well graded SAND w/silt and gravel, greyish brown (10YR 5/2), fine to coarse,angular to subrounded sand, gravel is fine to coarse, subangular to subrounded,granitic, up to 3", non-plastic silt.

At 115', gravel is granitic and volcanic detrital.

SW

SWSM

4550

4248

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

0%

100%

100%

0%

100%

100%

100%

0.0

At 120', color change to light yellowish brown (10YR 6/4).

Silty SAND w/gravel, yellowish brown (10YR 5/6), fine to coarse, angular tosubrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic and volcanic detrital, up to 2".

Well graded SAND w/silt and gravel, yellowish brown (10YR 5/4), fine to coarse,angular to subrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic and volcanic detrital, up to 3".

At 135', decrease in gravel content and size.

At 140', color change to greyish brown (10YR 5/2), decrease in gravel content.

At 145', increase in gravel content.

Well graded SAND w/gravel, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic andvolcanic detrital, up to 3", trace non-plastic silt.

SWSM

SM

SWSM

SW

4250

70

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y100%

100%

40%SB-30-125.5-

S-110111

100%

100%

100%

100%

100%

0%

Well graded SAND w/silt and gravel, greyish brown (10YR 5/2), fine to coarse,angular to subrounded sand, gravel is fine to coarse, subangular to subrounded,granitic, up to 3", non-plastic silt.

At 170', decrease in gravel content, gravel size to 2".

Well graded SAND w/gravel, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic andvolcanic detrital, up to 3", trace non-plastic silt.

At 180', color change to yellowish brown (10YR 5/4), decrease in gravel content,gravel size up to 1".

SW

SWSM

SW

80

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

100%

100%

100%

0%

100%

0.0

0.0

At 185', color change to brown (10YR 5/3), decrease in gravel content, no silt.

At 190', color change to greyish brown (10YR 5/2), trace silt.

Silty SAND, yellowish brown (10YR 5/4), fine to coarse, angular to subroundedsand, non-plastic silt, trace gravel is fine, subangular to subrounded, granitic, up to0.75".

Well graded SAND, light yellowish brown (10YR 6/4), fine to coarse, angular tosubrounded sand, trace non-plastic silt.

At 205', color change to light yellowish brown (2.5Y 6/4), trace fine, subangular tosubrounded granitic gravel up to 0.5".

SAND w/silt, light yellowish brown (2.5Y 6/3), fine to coarse, angular to subroundedsand, non-plastic silt, trace gravel is fine, subangular to subrounded, granitic, up to0.5".

Silty SAND, light yellowish brown (2.5Y 6/3), fine to coarse, angular to subroundedsand, non-plastic silt, trace gravel is fine, subangular to subrounded, granitic, up to0.75".

SW

SM

SW

SWSM

SM

90

85

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%SB-30-185.0-

S-110111100%SB-30-Dup01-110111

100%

100%

100%SB-30-200.0-

S-110111100%

100%

100%

100%

0.0

At 220', color change to light olive brown (2.5Y 5/6), fine to medium, angular tosubrounded sand, trace coarse sand.

At 230', becomes silty SAND w/gravel, color change to light yellowish brown (2.5Y6/3), fine to coarse sand, increased gravel content to 15%.

SAND w/silt and gravel, light yellowish brown (2.5Y 6/3), fine to coarse, angular tosubrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic, up to 1".

Silty SAND, brown (10YR 5/3), fine to coarse, angular to subrounded sand,non-plastic silt, trace gravel is fine, subangular to subrounded, granitic, to 0.5".

SM

SWSM

SM

86

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 9

Drilling Log



Continued



Continued Next Page

SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%SB-30-225.0-

S-110111100%

100%

100%

100%

100%

0.0At 250', color change to light olive brown (2.5Y 5/3), fine sand, few medium sand, nogravel.Total drilled depth = 250' bgs.Total sampled depth = 250.5' bgs.

SM

85

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 9

Drilling Log



Continued



SB-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%SB-30-250.0-

S-110211100%

0.0

23.8

Asphalt pavement.Silty SAND, brown (10YR 5/3), moist, predominantly fine,some medium and tracecoarse, angular to subrounded sand, non-plastic silt, trace gravel is fine, subangularto subrounded, granitic, up to 0.5".

Well graded SAND, greyish brown (10YR 5/2), moist, fine to medium, few coarse,angular to subrounded sand, trace non-plastic silt, trace gravel is fine, subangular tosubrounded, granitic, up to 0.5".

At 10', becomes SAND w/gravel

At 15', color change to yellowish brown (10YR 5/6), no silt.

At 20', trace non-plastic silt.

SM

SW

171924

182326

Casing: Diameter NA

COMMENTSBorehole backfilled withcement-bentonite grout.SB-31 is located 28' North ofsouthern property boundary and91' West of eastern propertyboundary.

Surface Elev. NA



Driller Ryan Reynolds


Bentonite Grout

Drilling Method Mud Rotary


Screen: Diameter NA

Type NALength NA

Length NA Type/Size NAHole Diameter NA

Cement Grout

Water Level Initial NA

North NA East NA

Hole Depth 250.0 ft

Top of Casing NA

Log By Adam Norris


Sand Pack NA

Static


PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 9

Drilling Log





Description

Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

100%

67%SB-31-11.0-

S-102611

100%

100%

53%SB-31-21.0-

S-102611

10.1

At 25', slight increase in gravel content, no silt.

At 30', color change to brownish yellow (10YR 6/6).

At 40', color change to light yellowish brown (10YR 6/4).

At 45', color change to yellowish brown (10YR 5/4).

At 50', color change to greyish brown (10YR 5/2), gravel up to 3", trace non-plasticsilt.

At 55', color change to yellowish brown (10YR 5/4), increase in gravel content.

SW

192225

242834

252733

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

53%SB-31-31.0-

S-102611

100%

100%

0%

100%

100%

17%

100%

24.2

Some local granitic cobbles (up to 4").

At 60', color change to brown (10YR 5/3), increase in gravel content, granitic andvolcanic.

At 65', no volcanic gravel, decrease in gravel content.

At 75', color change to greyish brown (10YR 5/2), no silt.

At 80', increase in gravel content, gravel up to 3".

Well graded sandy GRAVEL, greyish brown (10YR 5/2), fine to coarse, subangularto subrounded, granitic gravel (up to 3"), sand is fine to coarse, angular tosubrounded.

SW

GW

SW

77

3843

4347

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

0%

100%

100%

60%SB-31-70.5-

S-102611

100%

100%

0%

100%

0.0

0.0

Well graded SAND w/gravel, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic, up to2", trace non-plastic silt.



At 114', becomes SAND, light brownish grey (2.5Y 6/2), fine to medium sand, somecoarse sand, no gravel.

At 119', becomes SAND w/gravel, greyish brown (10YR 5/2), fine to coarse sand,gravel is fine to coarse, subangular to subrounded, granitic and volcanic, up to 2",

SW

3748

3748

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

60%SB-31-90.5-

S-102611

100%

100%

60%SB-31-100.5-

S-102611

100%

100%

100%

0.0

0.0

trace non-plastic silt.

Well graded SAND w/silt and gravel, greyish brown (2.5Y 5/2), fine to coarse,angular to subrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic, up to 2".

Well graded SAND w/gravel, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic andvolcanic, up to 2", trace non-plastic silt.

Well graded SAND w/silt and gravel, greyish brown (10YR 5/2), fine to coarse,angular to subrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic, up to 2".

At 145', granitic and volcanic gravel.

Well graded SAND w/gravel, greyish brown (2.5Y 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic, up to2", trace non-plastic silt.

SW

SWSM

SW

SWSM

SW

4060

4553

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y100%

100%

50%SB-31-125.5-

S-102711

100%

100%

100%

100%

100%

50%SB-31-150.5-

0.0

At 155', color change to greyish brown (10YR 5/2), gravel is granitic and volcanic.

Well graded SAND w/silt and gravel, greyish brown (10YR 5/2), fine to coarse,angular to subrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic, up to 2".

At 165', color change to greyish brown (2.5Y 5/2), gravel is granitic and volcanic.

Well graded SAND w/gravel, greyish brown (2.5Y 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic andvolcanic, up to 3", trace non-plastic silt.

At 175', color change to greyish brown (10YR 5/2), gravel up to 2".

Well graded SAND w/silt and gravel, greyish brown (10YR 5/2), fine to coarse,angular to subrounded sand, non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic and volcanic, up to 2".

SW

SWSM

SW

SWSM

5557

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

yS-

102711

100%

100%

100%

100%

100%

50%SB-31-175.5-

S-102711

100%

0.0

Well graded gravelly SAND, greyish brown (10YR 5/2), fine to coarse, angular tosubrounded sand, gravel is fine to coarse, subangular to subrounded, granitic, up to2", trace non-plastic silt.

Well graded SAND w/silt and gravel, greyish brown (2.5Y 5/2), fine to coarse,angular to subrounded sand, gravel is fine to coarse, subangular to subrounded,granitic, up to 2", non-plastic silt.

Silty SAND, light yellowish brown (10YR 6/4), fine, angular to subrounded sand, fewmedium sand, non-plastic silt.

At 205' becomes silty SAND w/gravel, yellowish brown (10YR 5/4), fine to coarsesand, gravel is fine to coarse, subangular to subrounded, granitic, up to 2".

At 210', color change to light yellowish brown (2.5Y 6/3), decrease in gravel contentand size.

At 215', color change to greyish brown (2.5Y 5/2).

SWSM

SW

SWSM

SM

5058

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

100%

100%

50%SB-31-200.5-

S-102711

100%

100%

100%

0.0 At 225', color change to yellowish brown (10YR 5/4), decrease in gravel content andsize.

Well graded SAND w/gravel, light brownish grey (2.5Y 6/2), fine to coarse, angularto subrounded sand, gravel is fine to coarse, subangular to subrounded, granitic, upto 2", trace non-plastic silt.

Silty SAND w/gravel, light olive brown (2.5Y 5/3), fine to coarse, angular tosubrounded sand, non-plastic silt, gravel is fine, subangular to subrounded, granitic,up to 0.75".

SM

SW

SM

5863

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 9

Drilling Log



Continued



Continued Next Page

SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

100%

50%SB-31-225.5-

S-102711

100%

100%

100%

100%

0.0

At 250' becomes silty SAND, brownish yellow (10YR 6/6), fine sand.

Total drilled depth = 250' bgs.Total sampled depth = 251' bgs.

SM

5258

PID

(ppm

)

Dep

th(f

t)

Soil Boring

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 9

Drilling Log



Continued



SB-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

100%

50%SB-31-250.5-

S-102711

0.0

0.0

Asphalt.

SAND, yellowish brown (10YR 5/4), moist, fine to medium,angular to subrounded sand, trace non-plastic silt.

Silty SAND, yellowish brown (10YR 5/4), moist, medium dense,fine to coarse, angular to subrounded sand, non-plastic silt, tracefine to coarse, subangular to subrounded granitic gravel up to 1".

Well graded SAND, light yellowish brown (10YR 6/4), moist,medium dense, fine to coarse, angular to subrounded sand,trace fine to coarse, subangular to subrounded granitic gravel upto 2", trace non-plastic silt.

At 20', no silt.

SP

SM

SW

48

11

81317

Casing: Diameter 4 in

COMMENTSGW-30 is located 33.5' North ofsouthern property line and 124.5'West of eastern property line.

Surface Elev. 740.70 ft





Bentonite Grout

Drilling Method ARCH


Screen: Diameter 4 in

11/07/1100:00

Type Sch. 80 PVCLength 220.0 ft

Length 70.0 ft Type/Size Sch. 80 PVC/0.03 inHole Diameter 10.0 in

Cement Grout

Water Level Initial 520.38

North 1894990.63 East 6445932.91

Hole Depth 305.0 ft

Top of Casing 740.38 ft

Log By Adam Norris


Sand Pack #2/12

11/08/1100:00Static (234.5)


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

740

738

736

734

732

730

728

726

724

722

720

718

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 10

Drilling Log





740.7

Description

Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

50%GW-30-

11.0-S-

110311

100%

100%

50%GW-30-

21.0-S-

110311

0.0

0.0

0.0

At 25', becomes SAND with gravel, color change to greyishbrown (10YR 5/2), increase gravel conten up to 2", tracenon-plastic silt.

At 30', color change to light olive brown (2.5Y 5/4).

At 35', becomes SAND, color change to yellowish brown (10YR5/4), decrease gravel content up to 1".

SAND, yellowish brown (10YR 5/4), moist, fine to medium,angular to subrounded sand.

Well graded SAND, yellowish brown (10YR 5/4), moist, mediumdense, fine to coarse, angular to subrounded sand, gravel is fineto coarse, subangular to subrounded, granitic, up to 1", tracenon-plastic silt.

At 55', becomes SAND with gravel, color change to light olivebrown (2.5Y 5/3), increase gravel content.

SW

SP

SW

61417

101220

71115

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

83%GW-30-

31.0-S-

110311

100%

100%

83%GW-30-

41.0-S-

110311

100%

100%

67%GW-30-

51.0-S-

110311

100%

716

714

712

710

708

706

704

702

700

698

696

694

692

690

688

686

0.0

0.0

At 60', becomes SAND, dense, trace gravel up to 3".

At 65', increased gravel content.

Some local granitic cobbles up to 4".

At 70', becomes SAND with gravel, very dense.

At 75', gravel size becomes up to 1".

At 80', color change to dark greyish brown (2.5Y 4/2), increase ingravel content up to 2".

At 85', decreased gravel content to 15%, up to 1".

SW

142127

3538

2832

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

17%

100%

100%

50%GW-30-

70.5-S-

110311

100%

100%

50%GW-30-

80.5-S-

110311

100%

684

682

680

678

676

674

672

670

668

666

664

662

660

658

656

654

0.0

0.0

At 90', color change to light olive brown (2.5Y 5/4), becomesmedium dense, increase in gravel content.

At 95', color change to greyish brown (2.5Y 5/2), decreasedgravel content, granitic and volcanic gravel.

Well graded SAND w/silt and gravel, greyish brown (2.5Y 5/2),moist, medium dense, fine to coarse, angular to subroundedsand, gravel is fine to coarse, subangular to subrounded,granitic, up to 2", non-plastic silt.

At 105', color change to light olive brown (2.5Y 5/3), decreasedgravel content and size.

Silty SAND w/gravel, light olive brown (2.5Y 5/3), moist,verydense, fine to coarse, angular to subrounded sand, non-plasticsilt, fine to coarse, subangular to subrounded granitic gravel upto 1".

SAND w/silt and gravel, olive brown (2.5Y 4/3), moist, fine tocoarse, angular to subrounded sand, non-plastic silt, fine tocoarse, subangular to subrounded, granitic gravel up to 2".

SW

SWSM

SM

SWSM

68

14

91319

2733

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

50%GW-30-

91.0-S-

110411

100%

100%

50%GW-30-

101.0-S-

110411

100%

100%

75%GW-30-

110.5-S-

110411

100%

652

650

648

646

644

642

640

638

636

634

632

630

628

626

624

622

0.0

0.0

0.0

0.0

At 125', color change to light olive brown (2.5Y 5/3), increasedgravel content, granitic and volcanic gravel.

At 130', color change to olive brown (2.5Y 4/3), decreased gravelcontent, gravel up to 1".

Well graded SAND w/gravel, light olive brown (2.5Y 5/3), moist,very dense, fine to coarse, angular to subrounded sand, tracenon-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic,l up to 2".

At 140', increased gravel content.

At 145', increased gravel content, granitic and volcanic gravel,no silt.

At 150', decreased gravel content, no volcanic gravel, tracenon-plastic silt.

SWSM

SW

3038

3239

3538

3547

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

70%GW-30-

120.5-S-

110411

100%

100%

100%GW-30-

130.5-S-

110411

100%

100%

70%GW-30-

140.5-S-

110411

100%

100%

70%GW-30-

620

618

616

614

612

610

608

606

604

602

600

598

596

594

592

590

0.0

0.0


Well graded GRAVEL w/sand, light olive brown (2.5Y 5/3), moist,very dense, fine to coarse, subangular to subrounded graniticgravel up to 2.5", sand is fine to coarse, angular to subrounded,trace non-plastic silt.

Well graded SAND, light olive brown (2.5Y 5/3), moist, fine,angular to subrounded sand, some medium and trace coarsesand, trace non-plastic silt, trace fine to coarse, subangular tosubrounded, granitic gravel up to 1.5".

At 170', sand is fine to coarse, increased gravel content to 15%.

Well graded SAND w/silt and gravel, brown (10YR 5/3), moist,fine to coarse, angular to subrounded sand, non-plastic silt, fineto coarse, subangular to subrounded, granitic gravel up to 2".

Silty SAND w/gravel, brown (10YR 5/3), moist, very dense, fineto coarse, angular to subrounded sand, non-plastic silt, fine tocoarse, subangular to subrounded, granitic gravel up to 2".

SW

GW

SW

SWSM

SM

SW

3839

3742

3139

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

150.5-S-

110411

100%

100%

23%

100%

100%

75%GW-30-

170.5-S-

110411

100%

100%

75%GW-30-

180.5-S-

110711GW-30-

588

586

584

582

580

578

576

574

572

570

568

566

564

562

560

558

0.0

0.0

0.0

Well graded SAND w/gravel, olive brown (2.5Y 4/3), moist, fineto coarse, angular to subrounded sand, gravel is fine to coarse,subangular to subrounded, granitic, up to 2", trace non-plasticsilt.

At 190', color change to light olive brown (2.5Y 5/7), dense,decrease in gravel size - up to 1".

Silty SAND, light olive brown (2.5Y 5/4), moist to wet, dense,fine, angular to subrounded sand, some medium sand,non-plastic silt.

Well graded SAND w/gravel, light olive brown (2.5Y 5/4), moist,fine to coarse, angular to subrounded sand, gravel is fine tocoarse, subangular to subrounded, granitic, up to 2", tracenon-plastic silt.

At 210', becomes SAND, predominantly fine to medium sand,trace coarse sand, decrease in gravel content.

At 215', color change to light olive brown (2.5Y 5/3), decreasedgravel size - up to 1", no silt.

SW

SM

SW

2629

2126

2327

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

Dup02-S-

110711

100%

100%

100%GW-30-

190.5-S-

110711

100%

100%

100%GW-30-

200.5-S-

110711

100%

100%

100%GW-30-

210.5-S-

110711

100%

556

554

552

550

548

546

544

542

540

538

536

534

532

530

528

526

0.0 At 220', becomes SAND w/gravel, wet, very dense, increasedgravel and coarse sand content, trace silt.

At 225', becomes SAND, color change to light yellowish brown(10YR 6/4), decreased gravel size - up to 0.5", no silt.

Silty SAND, light olive brown (2.5Y 5/4), wet, very dense, fine tocoarse, angular to subrounded sand, trace gravel is fine tocoarse, subangular to subrounded, granitic, up to 1", non-plasticsilt.

Well graded SAND, light olive brown (2.5Y 5/3), wet, fine tocoarse, angular to subrounded sand, trace gravel is fine tocoarse, subangular to subrounded, granitic up to 1.5", tracenon-plastic silt.

Silty SAND, light olive brown (2.5Y 5/3), wet, medium dense, fineto coarse, angular to subrounded sand, non-plastic silt, gravel isfine to coarse, subangular to subrounded, granitic, up to 1.5".

At 241', color change to olive brown (2.5Y 4/3), grades withoutgravel, coarse and medium sand.

Well graded SAND w/gravel, light olive brown (2.5Y 5/3), wet,fine to coarse, angular to subrounded sand, gravel is fine tocoarse, subangular to subrounded, granitic, up to 1", tracenon-plastic silt.

SW

SM

SW

SM

SW

3138

212833

111622

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

70%

100%

100%

73%

100%

100%

83%

100%

524

522

520

518

516

514

512

510

508

506

504

502

500

498

496

494

At 250', decreased gravel content to 5%, increased gravel size -up to 2".Silty SAND, light olive brown (2.5Y 5/6), wet, medium dense,non-plastic silt, fine, angular to subrounded sand, trace mediumsand.

At 255', becomes silty SAND w/gravel, color change to light olivebrown (2.5Y 5/4), fine to coarse sand, fine to coarse, subangularto subrounded, granitic and volcanic gravel up to 2".

At 260', color change to light olive brown (2.5Y 5/3), dense, nogravel, predominantly fine sand, trace coarse sand.

Well graded SAND w/gravel, light olive brown (2.5Y 5/3), wet,fine to coarse, angular to subrounded sand, trace non-plastic silt,gravel is fine to coarse, subangular to subrounded, granitic.

Silty SAND, light olive brown (2.5Y 5/3), wet, medium dense,predominantly fine, angular to subrounded sand, some mediumsand, trace coarse sand, non-plastic silt.

Sandy SILT, light olive brown (2.5Y 5/3), wet, non-plastic silt,fine to medium, angular to subrounded sand, trace coarse sand.

Silty SAND, light olive brown (2.5Y 5/3), wet, medium dense, fineto coarse, angular to subrounded sand, non-plastic silt.

SW

SM

SW

SM

ML

SM

161719

172226

46

10

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 10

Drilling Log



Continued



Continued Next Page

GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

100%

100%

83%

100%

100%

20%

100%

492

490

488

486

484

482

480

478

476

474

472

470

468

466

464

462

SAND, light yellowish brown (2.5Y 6/4), wet, fine to coarse,angular to subrounded sand.

Silty SAND, light yellowish brown (2.5Y 6/4), wet, mediumdense, fine to coarse, angular to subrounded sand, non-plasticsilt.

At 295', fine to medium sand, trace coarse sand.

Sandy SILT, light olive brown (2.5Y 5/3), wet, nonplastic silt, fineto medium, angular to subrounded sand.

Silty SAND, light olive brown (2.5Y 5/3), wet, fine to medium,angular to subrounded sand, non-plastic silt.

Bottom of hole = 305' bgs.

SM

SW

SM

ML

SM

91114

69

12

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 10

Drilling Log



Continued



GW-30N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

73%

100%

100%

73%

100%

100%

100%

460

458

456

454

452

450

448

446

444

442

440

438

436

434

432

430

0.8

0.4

Asphalt.

Silty SAND w/gravel, yellowish brown (10YR 5/4), dry, fine tomedium sand, trace coarse sand, fine gravel, asphalt and woodfragments, FILL.

Silty SAND, yellowish brown (10YR 5/4), moist, fine sand, somemedium sand, trace gravel, non-plastic silt.

SAND, light yellowish brown (10YR 6/4), fine sand, somemedium sand, trace gravel and silt.

Well graded SAND, yellowish brown (10YR 5/4), fine to mediumsand, some coarse sand, trace fines.

SM

SP

SW


COMMENTSGW-31 is located approximately30' North of southern propertyline and 40' East of westernproperty boundary.Surface Elev. 742.74 ft



Driller Alberto Vega


Bentonite Grout




11/11/1100:00



Cement Grout


North 1895108.01 East 6445442.46

Hole Depth 342.0 ft


Log By V. Vatharasin


Sand Pack #2/12

Static NA


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

742

740

738

736

734

732

730

728

726

724

722

720

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 12

Drilling Log





742.7

Description

Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

GW-31-

11.5-S-

110811

83%

100%

GW-31-

21.5-S-

110811

0.9

0.2

0.4

Grades with angular rock fragment gravel.

SAND, light yellowish brown (10YR 6/4), trace fine sand, somemedium sand, trace fines and rock fragment gravel.

At 50', color change to brown (10YR 5/3).

SW

SP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

67%

100%

GW-31-

31.5-S-

110811

83%

100%

GW-31-

41.5-S-

110811

100%

100%

GW-31-

51.5-S-

110811

718

716

714

712

710

708

706

704

702

700

698

696

694

692

690

688

0.0

0.7

0.0

At 60' becomes SAND w/gravel, predominantly medium sand,some fine sand.

Well graded SAND with GRAVEL, greyish brown (10YR 5/2),dry, fine to coarse, angular sand, fine angular gravel.

SP

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

83%

100%

GW-31-

61.5-S-

110811

67%

100%

GW-31-

71.5-S-

110911

67%

100%

GW-31-

81.5-S-

110911

686

684

682

680

678

676

674

672

670

668

666

664

662

660

658

656

0.8

0.9

0.5

SAND w/silt and gravel, brown (10YR 5/3), moist, fine to coarsesand, fine angular gravel, non-plastic silt.

SAND w/gravel, pale brown (10YR 6/3), fine to coarse sand, finegranitic gravel, trace silt.

GRAVEL w/sand, yellowish brown (10YR 5/4), fine, angular, rockfragment gravel, mostly medium sand, some coarse sand, tracefine sand and trace silt.

Silty SAND w/gravel, yellowish brown (10YR 5/4), moist, loose,fine to coarse sand, fine gravel, non-plastic silt.

SW

SWSM

SW

GP

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

33%

100%

GW-31-

91.5-S-

110911

83%

100%

GW-31-

101.5-S-

110911

83%

100%GW-31-

111-S-110911

654

652

650

648

646

644

642

640

638

636

634

632

630

628

626

624

0.8

0.5

0.5

At 120', dry, trace silt.

At 135', increase in silt content.

GRAVEL w/sand, light brownish grey (10YR 6/2), dry, fine,angular, rock fragment gravel, medium to coarse sand.

At 150', decrease in gravel content, some fine sand.

SM

GP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-31-

121-S-110911

83%

100%

GW-31-

131.5-S-

110911

83%

100%

GW-31-

141.5-S-

110911

67%

100%

622

620

618

616

614

612

610

608

606

604

602

600

598

596

594

592

0.7

0.6

0.3

SAND w/gravel and silt, light brownish grey (10YR 6/2), dry, fineto coarse sand, fine angular gravel, non-plastic silt.

At 160', color change to pale brown (10YR 6/3), no silt.

At 170', few mica flakes.

GP

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

GW-31-

151.5-S-

110911

100%

100%

GW-31-

161.5-S-

111011

100%

100%

GW-31-

171.5-S-

111011

67%

100%

GW-31-

181.5-S-

111011

590

588

586

584

582

580

578

576

574

572

570

568

566

564

562

560

1.0

0.1

0.6

At 190', increased gravel content, fine angular to subangulargravel, trace fines.

SAND w/gravel, brown (10YR 5/3), dry, fine sand, some mediumsand, fine gravel, trace silt.

At 207', decreasing gravel content.

Well graded SAND w/gravel, light yellowish brown (10YR 6/4),fine to coarse sand, fine angular to subangular gravel.

SW

SP

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-31-

190.5-S-

111011

100%

100%GW-31-

201-S-111011

100%

100%GW-31-

211-S-111011

558

556

554

552

550

548

546

544

542

540

538

536

534

532

530

528

0.2

0.0

0.1

SAND w/gravel, light yellowish brown (10YR 6/4), dry, fine sand,some medium to coarse sand, fine subangular gravel, no fines.

At 235', becomes moist.

Well graded SAND w/gravel, yellowish brown (10YR 5/4), wet,fine to medium sand, some coarse sand, fine to coarse gravel,trace non-plastic fines.

SW

SP

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-31-

220.5-S-

111011

100%

100%

GW-31-

231.5-S-

111011

100%

526

524

522

520

518

516

514

512

510

508

506

504

502

500

498

496

0.3

0.5

0.6

At 250', becomes SAND, no gravel, no fines.

At 260', color change to pale brown (10YR 6/3), medium sand,some fine and coarse sand.

At 270', becomes SAND w/gravel and silt, fine to coarse sand.

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

67%

67%

494

492

490

488

486

484

482

480

478

476

474

472

470

468

466

464

0.3

0.5

SAND w/gravel, brown (10YR 5/3), wet, fine sand, some mediumsand, gravel is fine, angular, rock fragment, trace silt.

Well graded SAND w/gravel, pale brown (10YR 6/3), wet, fine tocoarse sand, angular to subangular matrix, fine gravel, trace silt.

Silty SAND, brown (10YR 5/3), wet, fine to coarse sand,subangular matrix, non-plastic silt, trace gravel.

SAND w/silt, pale brown (10YR 6/3), wet, fine to coarse sand.

SP

SW

SM

SWSM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

33%

20%

33%

67%

462

460

458

456

454

452

450

448

446

444

442

440

438

436

434

432

0.3 Well graded SAND, light yellowish brown (10YR 6/4), wet, fine tocoarse angular sand.

End of boring = 342' bgs.

SWSM

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

312

314

316

318

320

322

324

326

328

330

332

334

336

338

340

342

344

Page: 11 of 12

Drilling Log



Continued



Continued Next Page

GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

17%

0%

430

428

426

424

422

420

418

416

414

412

410

408

406

404

402

400

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

344

346

348

350

352

354

356

358

360

362

364

366

368

370

372

374

376

Page: 12 of 12

Drilling Log



Continued



GW-31N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

398

396

394

392

390

388

386

384

382

380

378

376

374

372

370

368

Asphalt.Sand and gravel FILL.

Well graded SAND w/gravel, light grey (10YR 7/2), moist, fine tocoarse, gravel is angular to subrounded up to 2", trace plasticsilt.

Trace metal pipe debris.Cobbles up to 7" w/sand and gravel, rounded gravel up to 3".

Well graded SAND w/gravel, light brownish grey (2.5Y 6/2),moist, medium dense, fine to coarse, gravel is subrounded,granitic, up to 2.5", trace non-plastic silt, micacious.

SW

GW

SW


COMMENTSGW-32 descriptions weretransferred from the adjacentGW-24 boring log.GW-32 is located 50' East ofPublic Storage unit structure and50' North of southern propertyboundary.




Driller Joe Villegas


Bentonite Grout




11/15/1100:00



Cement Grout

Water Level Initial 489

North 1895185.96 East 6445269.02

Hole Depth 315.0 ft


Log By W. Weston


Sand Pack #2/12

Static NA


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

736

734

732

730

728

726

724

722

720

718

716

714

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 11

Drilling Log





737.7

Description

Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

Well graded GRAVEL w/sand, light brownish grey (2.5Y 6/2),moist, up to 2.75", sand is fine to coarse, trace silt.

Silty SAND, light brownish grey (2.5Y 6/2), moist, mediumdense, fine to coarse, low-plasticity silt.Well graded SAND w/gravel, light brownish grey (2.5Y 6/2),moist, fine to coarse, gravel is subrounded to rounded, up to 3",trace cobbles, trace silt.

Well graded GRAVEL w/sand, greyish brown (2.5Y 5/2), moist,very dense, subrounded gravel up to 3", trace cobbles, sand isfine to coarse.

SW

GW

SM

SW

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

712

710

708

706

704

702

700

698

696

694

692

690

688

686

684

682

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

680

678

676

674

672

670

668

666

664

662

660

658

656

654

652

650

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

648

646

644

642

640

638

636

634

632

630

628

626

624

622

620

618

At 120', color change to light brownish grey (2.5Y 6/2), decreasein gravel content.


GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

616

614

612

610

608

606

604

602

600

598

596

594

592

590

588

586

Well graded SAND, light yellowish brown (2.5Y 6/3), moist, fineto coarse, very dense, some subrounded gravel up to 2", tracesilt.

Large GRAVEL/cobbles.

Well graded GRAVEL w/sand, greyish brown (2.5Y 5/2), moist,very dense, gravel up to 3", trace cobbles, sand is fine to coarse,trace silt.

GW

SW

GP

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

584

582

580

578

576

574

572

570

568

566

564

562

560

558

556

554

At 193', sand content increases.

At 196', no cobbles.

At 200', trace low-plasticity silt.

Well graded SAND w/gravel, greyish brown (2.5Y 5/2), moist,fine to coarse, very dense, gravel is subrounded, up to 1.25",some silt.

GW

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

552

550

548

546

544

542

540

538

536

534

532

530

528

526

524

522

At 220', color change to light yellowish brown (2.5Y 6/3),subangular to subrounded gravel up to 1", low-plasticity silt.

At 240', increase in gravel content, gravel up to 3.25", severalthin lenses of fine sand.

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

520

518

516

514

512

510

508

506

504

502

500

498

496

494

492

490

At 262', gravel up to 1.5".

GRAVEL w/sand, gravel up to 3", cobbles up to 8" common,sand is fine to coarse.

SAND, light greyish brown (2.5Y 6/2), moist, fine, some mediumsand, very thin lenses of silt and darker sands, no gravel.

Silty SAND, brownish grey (2.5Y 6/2), wet, fine to coarse, slightlymicacious.

SW

GW

SP

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

488

486

484

482

480

478

476

474

472

470

468

466

464

462

460

458

At 288', subrounded gravel up to 1".

SILT, brown (10YR 5/3), wet, low-plasticity silt, very fine sand,trace medium sand, slightly micaceous.

Silty SAND, light grey (2.5Y 7/2), wet, fine to coarse, trace gravelup to 1", slightly micaceous.

At 306', a 1" lens of low plasticity CLAY, yellowish brown (10YR5/4), medium to high plasticity.

SM

ML

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 11

Drilling Log



Continued



Continued Next Page

GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

456

454

452

450

448

446

444

442

440

438

436

434

432

430

428

426

Well graded SAND, light brownish grey (2.5Y 6/2), wet, fine tocoarse, trace gravel up to 2.5", trace silt.

SM

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

312

314

316

318

320

322

324

326

328

330

332

334

336

338

340

342

344

Page: 11 of 11

Drilling Log



Continued



GW-32N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

424

422

420

418

416

414

412

410

408

406

404

402

400

398

396

394

Asphalt.Silty SAND w/gravel, brown (10YR 5/3), moist, fine to mediumsand, few coarse sand, fine gravel, FILL.

Silty SAND w/gravel, brown (10YR 5/3), moist, fine to mediumsand, few coarse sand, fine gravel.

Well graded SAND w/gravel, light yellowish brown (10YR 6/4),moist, fine to coarse sand, fine gravel, trace fines, angualr tosubangular matrix.

AF

SM

SW


COMMENTSGW-33A descriptions weretransferred from the adjacentGW-33B boring log.GW-33A is located 60' West ofeastern property boundary and50' North of southern propertyboundary.






Bentonite Grout






Cement Grout

Water Level Initial

North 1895218.00 East 6445109.24

Hole Depth 305.0 ft


Log By Adam Norris


Sand Pack #2/12

Static NA


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

736

734

732

730

728

726

724

722

720

718

716

714

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 10

Drilling Log





737.0

Description

Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

Grades with coarse gravel.

At 50', color change to pale brown (10YR 6/3), dry, gravel is fine,angular to subrounded, no silt, increase in gravel content.

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

712

710

708

706

704

702

700

698

696

694

692

690

688

686

684

682

GRAVEL w/sand, greyish brown (10YR 5/2), dry, fine subangularrock fragment gravel, medium to coarse sand.

At 70', decrease in gravel content.

At 80', increase in gravel content, monzonite to diorite rockfragments, mica flakes abundant.

SW

GP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

680

678

676

674

672

670

668

666

664

662

660

658

656

654

652

650

Well graded GRAVEL w/sand, pale brown (10YR 6/3), dry, fineto coarse rock fragment gravel, coarse to medium sand.

At 110', decrease in gravel content, fine to coarse sand.

GP

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

648

646

644

642

640

638

636

634

632

630

628

626

624

622

620

618

Well graded SAND w/gravel, yellowish brown (10YR 5/4), dry,fine to coarse, angular sand, gravel is angular rock fragment.

At 128', grades with silt.

Well graded GRAVEL w/sand, greyish brown (10YR 5/2), dry,fine to coarse subangular gravel, medium to coarse sand.

SAND /gravel, pale brown (10YR 6/3), moist to dry, coarse sand,some medium sand, fine to coarse gravel, angular to subangular.

Well graded GRAVEL w/sand, fine to coarse gravel, medium tocoarse sand, trace fines.

SWGW

GW

SP

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

616

614

612

610

608

606

604

602

600

598

596

594

592

590

588

586

SAND w/gravel, light yellowish brown (10YR 6/4), dry, mediumsand, some fine sand, fine to coarse gravel, angular tosubangular, trace fines.

At 170', grades to coarse sand, some medium sand.

SAND, yellowish brown (10YR 5/4), dry, fine sand, somemedium sand, trace angular fine gravel, trace fines.

GW

SP

SP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

584

582

580

578

576

574

572

570

568

566

564

562

560

558

556

554

At 190', color change to very pale brown (10YR 7/4), gradedw/coarse gravel.

Silty SAND w/gravel, brown (10YR 5/3), fine sand, some mediumsand, trace coarse sand, fine angular rock fragment gravel,non-plastic silt.

Well graded SAND, light yellowish brown (10YR 6/4), dry, fine tocoarse sand, trace fines.

SP

SM

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

552

550

548

546

544

542

540

538

536

534

532

530

528

526

524

522

Silty SAND, brown (10YR 4/3), damp, fine sand, few mediumsand, non-elastic silt.

Well graded SAND w/silt, brown (10YR 4/3), moist, fine tocoarse sand, slightly elastic silt.

SW

SM

SWSM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

520

518

516

514

512

510

508

506

504

502

500

498

496

494

492

490

SAND, pale brown (10YR 6/3), wet, fine sand, some mediumsand.

Silty SAND, pale brown (10YR 6/3), wet, fine sand, non-elasticsilt.

SWSM

SP

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 10

Drilling Log



Continued



Continued Next Page

GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

488

486

484

482

480

478

476

474

472

470

468

466

464

462

460

458

Well graded SAND w/silt, brown (10YR 5/3), moist, fine tomedium sand, non-elastic silt, trace mica flakes.

Well graded SAND, light yellowish brown (10YR 6/4), wet, fine tocoarse, angular to subangular sand, trace fines.

SAND, yellowish brown (10YR 5/4), wet, medium sand, fewcoarse and fine sand, angular to subangular, trace fines.


SWSM

SW

SP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 10

Drilling Log



Continued



GW-33AN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

456

454

452

450

448

446

444

442

440

438

436

434

432

430

428

426

0.0

0.6

0.9

Asphalt.Silty SAND w/gravel, brown (10YR 5/3), moist, fine to mediumsand, few coarse sand, fine gravel, FILL.

Silty SAND w/gravel, brown (10YR 5/3), moist, fine to mediumsand, few coarse sand, fine gravel.

Well graded SAND w/gravel, light yellowish brown (10YR 6/4),moist, fine to coarse sand, fine gravel, trace fines, angualr tosubangular matrix.

AF

SM

SW


COMMENTSGW-33B is located 45' West ofeastern property boundary and50' North of southern propertyboundary.Surface Elev. 736.98 ft





Bentonite Grout






Cement Grout

Water Level Initial 0

North 1895215.75 East 6445128.03

Hole Depth 360.0 ft


Log By V. Vatharasin


Sand Pack #2/12

Static NA


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

736

734

732

730

728

726

724

722

720

718

716

714

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 12

Drilling Log





737.0

Description

Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%GW-33B-10.5-

S-

100%

GW-33B-21.0-

S-

0.4

0.7

0.7

Grades with coarse gravel.

At 50', color change to pale brown (10YR 6/3), dry, gravel is fine,angular to subrounded, no silt, increase in gravel content.

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

GW-33B-31.0-

S-

100%

GW-33B-41.0-

S-

100%GW-33B-51.0-

S-

712

710

708

706

704

702

700

698

696

694

692

690

688

686

684

682

0.8

0.6

0.9

GRAVEL w/sand, greyish brown (10YR 5/2), dry, fine subangularrock fragment gravel, medium to coarse sand.

At 70', decrease in gravel content.

At 80', increase in gravel content, monzonite to diorite rockfragments, mica flakes abundant.

SW

GP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

33%GW-33B-60.0-

S-

100%GW-33B-70.5-

S-

100%GW-33B-80.5-

S-

680

678

676

674

672

670

668

666

664

662

660

658

656

654

652

650

0.5

0.8

0.0

Well graded GRAVEL w/sand, pale brown (10YR 6/3), dry, fineto coarse rock fragment gravel, coarse to medium sand.

At 110', decrease in gravel content, fine to coarse sand.

GP

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%GW-33B-90.5-

S-

100%

GW-33B-

101.0-S-

100%

GW-33B-

111.0-S-

648

646

644

642

640

638

636

634

632

630

628

626

624

622

620

618

0.0

0.0

0.2

0.4

Well graded SAND w/gravel, yellowish brown (10YR 5/4), dry,fine to coarse, angular sand, gravel is angular rock fragment.

At 128', grades with silt.

Well graded GRAVEL w/sand, greyish brown (10YR 5/2), dry,fine to coarse subangular gravel, medium to coarse sand.

SAND /gravel, pale brown (10YR 6/3), moist to dry, coarse sand,some medium sand, fine to coarse gravel, angular to subangular.

Well graded GRAVEL w/sand, fine to coarse gravel, medium tocoarse sand, trace fines.

SWGW

GW

SP

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%GW-33B-

120.0-S-

100%

GW-33B-

131.0-S-

67%GW-33B-

140.5-S-

67%GW-33B-

150.5-

616

614

612

610

608

606

604

602

600

598

596

594

592

590

588

586

0.0

0.0

0.0

SAND w/gravel, light yellowish brown (10YR 6/4), dry, mediumsand, some fine sand, fine to coarse gravel, angular tosubangular, trace fines.

At 170', grades to coarse sand, some medium sand.

SAND, yellowish brown (10YR 5/4), dry, fine sand, somemedium sand, trace angular fine gravel, trace fines.

GW

SP

SP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

S-

67%GW-33B-

160.5-S-

67%GW-33B-

170.5-S-

100%

GW-33B-

181.0-S-

584

582

580

578

576

574

572

570

568

566

564

562

560

558

556

554

0.4

0.2

At 190', color change to very pale brown (10YR 7/4), gradedw/coarse gravel.

Silty SAND w/gravel, brown (10YR 5/3), fine sand, some mediumsand, trace coarse sand, fine angular rock fragment gravel,non-plastic silt.

Well graded SAND, light yellowish brown (10YR 6/4), dry, fine tocoarse sand, trace fines.

SP

SM

SW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

67%GW-33B-

190.5-S-

67%GW-33B-

200.5-S-

67%GW-33B-

210.5-S-

552

550

548

546

544

542

540

538

536

534

532

530

528

526

524

522

0.5

0.1

1.2

Silty SAND, brown (10YR 4/3), damp, fine sand, few mediumsand, non-elastic silt.

Well graded SAND w/silt, brown (10YR 4/3), moist, fine tocoarse sand, slightly elastic silt.

SW

SM

SWSM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%GW-33B-

250.5-S-

67%GW-33B-

230.5-S-

33%GW-33B-

240.0-S-

520

518

516

514

512

510

508

506

504

502

500

498

496

494

492

490

1.8

0.3

SAND, pale brown (10YR 6/3), wet, fine sand, some mediumsand.

Silty SAND, pale brown (10YR 6/3), wet, fine sand, non-elasticsilt.

SWSM

SP

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

67%

0%

488

486

484

482

480

478

476

474

472

470

468

466

464

462

460

458

0.5

0.5

0.4

0.4

Well graded SAND w/silt, brown (10YR 5/3), moist, fine tomedium sand, non-elastic silt, trace mica flakes.

Well graded SAND, light yellowish brown (10YR 6/4), wet, fine tocoarse, angular to subangular sand, trace fines.

SAND, yellowish brown (10YR 5/4), wet, medium sand, fewcoarse and fine sand, angular to subangular, trace fines.

At 310', color changes to greyish brown (10YR 5/2), fine sand,few medium sand, no fines, trace fine to coarse granitic gravel.

SWSM

SW

SP

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

67%

33%

83%

67%

456

454

452

450

448

446

444

442

440

438

436

434

432

430

428

426

0.1 At 320', color change to pale brown (10YR 6/3), mostly mediumsand, some fine and trace coarse sand, angular to subangular,moist to wet.

Silty SAND.

GRAVEL w/sand, fine to coarse, angular to subangular, graniticrock fragment gravel, medium to coarse sand, trace silt.

At 340', grades without silt.

SP

SM

GW

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

312

314

316

318

320

322

324

326

328

330

332

334

336

338

340

342

344

Page: 11 of 12

Drilling Log



Continued



Continued Next Page

GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

20%

20%

0%

424

422

420

418

416

414

412

410

408

406

404

402

400

398

396

394

SAND w/silt and gravel, yellowish brown (10YR 5/4), wet,medium sand, trace fine and coarse sand, fine gravel,non-elastic silt.


GW

SM

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

344

346

348

350

352

354

356

358

360

362

364

366

368

370

372

374

376

Page: 12 of 12

Drilling Log



Continued



GW-33BN

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

67%

392

390

388

386

384

382

380

378

376

374

372

370

368

366

364

362

2.6

0.0

Concrete pavement.

Well graded SAND, pale brown (10YR 6/3), moist, angular tosubrounded, predominantly fine, trace non-plastic silt.

At 5', color change to brown (10YR 5/3).

Silty SAND, greyish brown (10YR 5/2), moist, angular tosubrounded, fine to coarse, non-plastic silt, fine to coarse,subangular to subrounded granitic gravel up to 1".

At 14', color change to pale brown (10YR 6/3), predominantlyfine sand, few medium and trace coarse sand, no gravel.

Well graded SAND w/gravel, yellowish brown (10YR 5/6), moist,fine to coarse, angular to subrounded sand, fine to coarse,subangular to subrounded granitic gravel up to 1", tracenon-plastic silt.

SW

SM

SW

358

56

10


COMMENTSGW-34 is located approximately40' South of northern propertyboundary between facilitybuildings.Surface Elev. 732.93 ft





Bentonite Grout




11/21/1100:00



Cement Grout


North 1894916.06 East 6445619.69

Hole Depth 305.0 ft


Log By Adam Norris


Sand Pack #2/12

Static NA


PID

(ppm

)

Dep

th(f

t)

Monitoring Well

732

730

728

726

724

722

720

718

716

714

712

710

Ele

vatio

n(f

t)

% R

ecov

ery

0

2

4

6

8

10

12

14

16

18

20

22

24

Page: 1 of 10

Drilling Log





732.9

Description

Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

100%

33%

100%

100%

100%

GW-34-

21.0-S-

111711

0.0

0.0

0.0

At 25', becomes SAND.

At 29', becomes SAND w/gravel, medium dense.

At 34', becomes SAND.


At 45', grading to less gravel content.


At 55', color change to brown (10YR 5/3), no gravel.

SW

81218

91415

81216

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

Page: 2 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

100%GW-34-

31.0-S-

111711

100%

100%

100%GW-34-

41.0-S-

111711

100%

100%

100%GW-34-

51.0-S-

111711

100%

708

706

704

702

700

698

696

694

692

690

688

686

684

682

680

678

0.0

0.0

0.0

At 60', becomes SAND w/gravel, color change to greyish brown(10YR 5/2), gravel content increases, up to 1.5".



Well graded GRAVEL w/sand, greyish brown (10YR 5/2), dry,medium dense, subangular to subrounded, fine to coarse,granitic and volcanic gravel up to 1.5", sand is fine to coarse,angular to subrounded.

Silty SAND w/gravel, greyish brown (10YR 5/2), moist, fine tocoarse, angular to subrounded sand, non-plastic silt, gravel isfine to coarse, subangular to subrounded, granitic, up to 1".

SW

GW

SM

69

13

111522

2227

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

56

58

60

62

64

66

68

70

72

74

76

78

80

82

84

86

88

Page: 3 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-34-

61.0-S-

111711

100%

100%

67%GW-34-

71.0-S-

111711

100%

100%

80%GW-34-

80.5-S-

111711

100%

676

674

672

670

668

666

664

662

660

658

656

654

652

650

648

646

0.0

0.0

At 90', color change to light olive brown (2.5Y 5/3), mediumdense, granitic and volcanic gravel.

Well graded GRAVEL w/sand, light olive brown (2.5Y 5/3), moist,fine to coarse, subangular to subrounded, granitic gravel up to2", sand is fine to coarse, angular to subrounded, tracenon-plastic silt.

Well graded SAND w/gravel, light olive brown (2.5Y 5/3), moist,very dense, fine to coarse, angular to subrounded sand, gravel isfine to coarse, subangular to subrounded, granitic and volcanic,up to 2", trace non-plastic silt.

At 105', gravel content and size fluctuating.

At 110', dense.

SM

GW

SW

1622

50

3539

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

88

90

92

94

96

98

100

102

104

106

108

110

112

114

116

118

120

Page: 4 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-34-

90.5-S-

111811

100%

100%

0%

100%

100%

60%GW-34-

110.5-S-

111811

100%

644

642

640

638

636

634

632

630

628

626

624

622

620

618

616

614

0.0

0.0

0.0

0.0

SW

2329

3237

3135

2938

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

120

122

124

126

128

130

132

134

136

138

140

142

144

146

148

150

152

Page: 5 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

50%GW-34-

120.5-S-

111811

100%

100%

50%GW-34-

130.5-S-

111811

100%

100%

50%GW-34-

140.5-S-

111811

100%

100%

100%GW-34-

612

610

608

606

604

602

600

598

596

594

592

590

588

586

584

582

0.0

0.0

0.0

At 155', color change to light olive brown (2.5Y 5/4), granitic andvolcanic gravel, no silt.

At 160', trace non-plastic silt.

Well graded SAND w/silt and gravel, light olive brown (2.5Y 5/4),moist, dense, fine to coarse, angular to subrounded sand,non-plastic silt, gravel is fine to coarse, subangular tosubrounded, granitic and volcanic, up to 2".

well graded SAND w/gravel, light olive brown (2.5Y 5/4), moist,fine to coarse, angular to subrounded sand, gravel is fine tocoarse, subangular to subrounded, granitic and volcanic, up to1.5", trace non-plastic silt.

SW

SWSM

SW

171924

2137

2838

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

152

154

156

158

160

162

164

166

168

170

172

174

176

178

180

182

184

Page: 6 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

150.5-S-

111811

100%

100%

100%GW-34-

160.5-S-

112111

100%

100%

75%GW-34-

170.5-S-

112111

100%

80%GW-34-

180.5-S-

112111

580

578

576

574

572

570

568

566

564

562

560

558

556

554

552

550

0.0

0.0

0.0

Silty SAND, olive brown (2.5Y 4/3), moist, dense, fine, angular tosubrounded sand, non-plastic silt.

At 195', becomes silty SAND w/gravel, light olive brown (2.5Y5/4), fine to coarse, gravel is fine to coarse, subanuglar tosubrounded, granitic, up to 1".

At 198', becomes silty SAND, fine sand, trace medium sand.

Well graded SAND, light yellowish brown (2.5Y 6/4), moist, fineto coarse, angular to subrounded sand, gravel is fine to coarse,subangular to subrounded, granitic, up to 1".

At 210', dense, trace non-plastic silt.

At 215', no gravel, no silt.

SW

SM

SW

2236

2738

2638

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

184

186

188

190

192

194

196

198

200

202

204

206

208

210

212

214

216

Page: 7 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%

100%GW-34-

190.5-S-

112111

100%

100%

100%GW-34-

200.5-S-

112111

100%

100%

90%GW-34-

210.5-S-

112111

100%

548

546

544

542

540

538

536

534

532

530

528

526

524

522

520

518

0.0 At 220', some fine, subangular to subrounded, granitic gravel upto 0.75", trace non-plastic silt.

Silty SAND, light olive brown (2.5Y 5/4), moist, predominantlyfine, angular to subrounded sand, some medium to coarse sand,non-plastic silt, trace fine, subangular to subrounded, graniticgravel up to 0.75".

At 230', no gravel, no coarse sand, trace medium sand.

SAND w/ silt, light olive brown (2.5Y 5/4), wet, predominantlyfine, angular to subrounded sand, some medium sand,non-plastic silt.

Silty SAND, light olive brown (2.5Y 5/4), wet, medium dense, fineto coarse, angular to subrounded sand, non-plastic silt, tracegravel is fine to coarse, subangular to subrounded, granitic, 1".

At 245', color change to light olive brown (2.5Y 5/3), no gravel.

SW

SM

SPSM

SM

253237

2327

91627

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

216

218

220

222

224

226

228

230

232

234

236

238

240

242

244

246

248

Page: 8 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

100%GW-34-

220.5-S-

112111

100%

100%

100%GW-34-

230.5-S-

112111

100%

100%

100%

100%

516

514

512

510

508

506

504

502

500

498

496

494

492

490

488

486

At 250', becomes silty SAND w/gravel, gravel content increases,up to 1.5".

Well graded SAND, light olive brown (2.5Y 5/3), wet, mediumdense, fine to coarse, angular to subrounded sand.

At 265', becomes SAND w/gravel, gravel content increases,gravel is fine to coarse, subangular to subrounded, granitic andvolcanic, up to 2".

At 270', becomes SAND, no gravel, trace non-plastic silt.

At 275', becomes SAND w/gravel, gravel content increases,gravel is fine to coarse, subangular to subrounded, granitic andvolcanic, up to 1.5".

Silty SAND, light olive brown (2.5Y 5/3), wet, medium dense, fineto medium, angular to subrounded sand, trace coarse sand,

SM

SW

SM

91619

81013

89

10

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

248

250

252

254

256

258

260

262

264

266

268

270

272

274

276

278

280

Page: 9 of 10

Drilling Log



Continued



Continued Next Page

GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

67%

100%

100%

70%

100%

100%

50%

100%

484

482

480

478

476

474

472

470

468

466

464

462

460

458

456

454

non-plastic silt.

Well graded SAND, light olive brown (2.5Y 5/3), wet, fine tocoarse, angular to subrounded sand, trace non-plastic silt.

Silty SAND, light olive brown (2.5Y 5/3), wet, medium dense,fine, angular to subrounded sand, trace medium sand,non-plastic silt.

At 295', fine to medium sand, trace coarse sand.

Well graded SAND w/silt, light olive brown (2.5Y 5/3), wet, fine tocoarse, angular to subrounded sand, non-plastic silt.


SM

SW

SM

SWSM

69

11

68

11

PID

(ppm

)

Dep

th(f

t)

Monitoring Well

Ele

vatio

n(f

t)

% R

ecov

ery

280

282

284

286

288

290

292

294

296

298

300

302

304

306

308

310

312

Page: 10 of 10

Drilling Log



Continued



GW-34N

O-H

O N

OH

O-L

OG

S.G

PJ

MW

H IA

.GD

T 2

/6/1

2

Gra

phic

Log

US

CS

Blo

w C

ount

Rec

over

y

Wel

lC

ompl

etio

n

100%

33%

100%

100%

33%

100%

100%

100%

452

450

448

446

444

442

440

438

436

434

432

430

428

426

424

422

APPENDIX C

WELL DEVELOPMENT LOGS

APPENDIX D

SURVEY REPORT

FS(ELEVATION)

1 1895109.06 6445342.55 34.1992321 -118.3846961 737.232 1895125.24 6445346.40 34.1992766 -118.3846835 737.683 1895126.62 6445336.15 34.1992802 -118.3847175 737.524 1895112.23 6445332.80 34.1992406 -118.3847284 737.225 1895149.35 6445245.19 34.1993417 -118.3850185 736.986 1895133.59 6445241.32 34.1992984 -118.3850312 736.567 1895138.95 6445217.15 34.1993129 -118.3851112 736.278 1895183.35 6445217.02 34.1994349 -118.3851121 737.349 1895140.93 6445210.10 34.1993182 -118.3851345 736.5010 1895155.05 6445213.27 34.1993571 -118.3851242 736.9911 1895147.67 6445182.35 34.1993365 -118.3852263 736.8912 1895161.91 6445184.66 34.1993756 -118.3852189 737.61

SURVEYED POINTSPOINT NAME NORTH EAST LATITUDE (DD) LONGITUDE (DD)

TOR FS TOC(ELEVATION) (ELEVATION) (ELEVATION)

GW-30 1894990.63 6445932.91 34.1989128 -118.3827422 740.67 740.70 740.38 -0.32GW-31 1895108.01 6445442.46 34.1992302 -118.3843657 742.82 742.79 742.49 -0.30GW-32 1895185.96 6445269.02 34.1994426 -118.3849402 737.64 737.67 737.30 -0.37

GW-33A 1895218.00 6445109.24 34.1995289 -118.3854690 737.01 737.02 736.66 -0.37GW-33B 1895215.75 6445128.03 34.1995230 -118.3854069 736.97 736.98 736.73 -0.25GW-34 1894916.06 6445619.69 34.1987046 -118.3837771 732.98 732.93 732.59 -0.34

MONITORING WELLSWELL NORTH EAST LATITUDE (DD) LONGITUDE (DD) RISER_HT

APPENDIX E

BASELINE GROUNDWATER SAMPLING LOGS

APPENDIX F

DATA VALIDATION REPORT

of 4

To: Michael Flaugher – PAS Date: January 9, 2012 From: Sarah Von Raesfeld – WCK Site: Honeywell North Hollywood

NHE Supplemental Design Investigation Report Reference: Calscience SDGs 11-10-1850, 11-10-1922, 11-10-2114, 11-11-0073, 11-11-0160, 11-11-0270, 11-11-0405, 11-11-0559, 11-11-0675, 11-11-0820, 11-11-0972, 11-11-1450, 11-11-1451, 11-11-1556, 11-11-1557, 11-11-1697, 11-12-1659

Job Number: 1012268 File Reference:

This data validation report has been prepared for the above referenced site and summarizes the review of analytical data submitted by Calscience Environmental Laboratories, Inc. located in Simi Valley, California. Samples were collected October 26, 2011 through December 21, 2011 as part of the NHE Supplemental Design Investigation conducted at the former Honeywell site located in North Hollywood, California. A summary of samples collected for this event is included in Table 1. One hundred eighteen (118) primary field samples, fourteen (14) field duplicates, and thirty-three (33) field quality control (QC) samples were submitted. The following samples were submitted as field duplicate pairs:

Duplicate Primary Sample

SB-31-DUP01-S-102711 SB-31-225.5-S-102711 SB-30-DUP01-S-110111 SB-30-185.0-S-110111 GW-30-DUP01-S-110411 GW-30-130.5-S-110411 GW-30-DUP02-S-110711 GW-30-180.5-S-110711 GW-30-DUP03-S-110711 GW-30-200.5-S-110711 GW-31-DUP01-S-110911 GW-31-111-S-110911 GW-31-DUP02-S-111011 GW-31-161.5-S-111011 GW-31-DUP03-S-111011 GW-31-201-S-111011

GW-33B-DUP01-S-111711 GW-33B-11-S-111711 GW-33B-DUP02-S-111811 GW-33B-181.5-S-111811 GW-34-DUP01-S-111811 GW-34-150.0-S-111811 GW-34-DUP02-S-112111 GW-34-161.0-S-112111 GW-34-DUP03-S-112111 GW-34-220.5-S-112111

DUP-122111 GW-32-122111 Samples were analyzed by one or more of the following methods:

Volatile organic compounds (VOCs) by United States Environmental Protection Agency (USEPA) method SW8260B

1,2,3-Trichloropropane (TCP) by modified method 524M (purge-and-trap/gas chromatography/mass

spectrometry [GC/MS])

1,4-Dioxane by USEPA Method SW8270C(M) with isotope dilution

Data Validation Report

Honeywell North Hollywood NHE Supplemental Design Investigation January 9, 2012

Page 2 of 4

N-nitrosodimethylamine (NDMA) by USEPA Methods 1625CM (capillary column-GC/MS/MS) and SW8270C with selective ion monitoring

Perchlorate by USEPA Method 314.0

Title 22 metals (Sb, As, Ba, Be, Cd, Cr, Co, Cu, Hg, Pb, Mo, Ni, Se, Ag, Tl, V, Zn) by USEPA

Methods SW6020, SW7470A, and SW7471A Results were reviewed in accordance with the appropriate methods listed above. In addition, the USEPA Contract Laboratory Program National Functional Guidelines for Organic (USEPA, 1999) and Inorganic (USEPA, 2004) Data Review were used to provide overall guidance for the validation process. The data review included an evaluation of the following QC parameters based on standard performance criteria presented in these documents.

Analytical Holding Times/Sample Preservation

Method Blanks, Trip Blanks, and Field Blanks

Laboratory Control Sample/ Laboratory Control Sample Duplicate (LCS/LCSD) Performance

Surrogate Percent Recovery

Matrix Spike/Matrix Spike Duplicate (MS/MSD) Sample Performance

Field Duplicate Comparison

Detection Limits Summary of Findings: Data were qualified as necessary based on the data validation process described above. Qualified results are listed in Table 2. All samples were analyzed according to the accompanying chains of custody (COCs). All analytical holding times were met. QC data were reviewed for laboratory and instrument precision and accuracy from LCS/LCSD recoveries and relative percent differences (RPDs), MS/MSD sample recoveries and RPDs, lab duplicate RPDs, and surrogate recoveries (organic analyses). All precision and accuracy QC elements were found to be within acceptable limits with the following exceptions:

The surrogate recoveries in 50 samples analyzed for NDMA were less than the lower control limit. NDMA was not detected in the samples and was qualified as an estimated non-detect (UJ) at the method detection limit, with a low bias.

The surrogate recovery in one sample analyzed for NDMA was greater than the upper control limit. NDMA was not detected in the sample, so the result was not qualified.

The LCSD percent recovery associated with the metals analysis of six samples was greater than the upper control limit for selenium. Selenium was not detected in the associated samples, so no data were qualified.

The LCS/LCSD percent recoveries associated with the VOC analysis of five samples were

greater than the upper control limit for bromomethane. Bromomethane was not detected in the associated samples, so no data were qualified.


Page 3 of 4

The LCS/LCSD RPDs associated with the VOC analysis of two samples were greater than the control limit for carbon disulfide, 1,1-dichloroethene, and 1,1,2-trichloro-1,2,2-trifluoroethane. All three compounds were not detected in the samples, so no data were qualified.

The LCS/LCSD RPD associated the VOC analysis of two samples was greater than the control limit for bromoform. Bromoform was not detected in the samples, so no data were qualified.

The LCSD percent recovery associated with the metals analysis of ten samples was less than the lower control limit for silver. Silver was not detected in all of the samples and was qualified as an estimated non-detect (UJ) at the method detection limit, with a low bias.

The post-digestion spike recovery associated with the metals analysis of GW-31-111-S-110911 was less than the lower control limit for zinc. Zinc was detected in the sample and was qualified as estimated (J) with a low bias.

The MS/MSD recoveries associated with the metals analysis of project sample SB-31-200.5-

S-102711 were greater than the upper control limit for barium. Barium was detected in the sample and was qualified as estimated (J) with a high bias.

The MS/MSD RPD associated with the NDMA analysis of GW-30-31.0-S-110311 was greater than the control limit. NDMA was not detected in the sample, so the result was not qualified.

The MSD percent recovery associated with the metals analysis of GW-30-130.5-S-110411 was less than the lower control limit for barium. Barium was detected in the sample and was qualified as estimated (J) with a low bias.

The MS/MSD percent recoveries and RPDs associated with the metals analysis of GW-31-311-S-

110911 were not meaningful for barium. The concentration of the barium in the parent sample was greater than four times the concentration used for the spike, and therefore this criterion was not evaluated.

The MS/MSD RPD associated with the metals analysis of GW-34-DUP03-S-112111 and GW-34-220.5-S-112111 was greater than the control limit for zinc. Zinc was detected in both samples and was qualified as estimated (J) with no determined bias.

Field sampling precision was also evaluated by using the calculated RPD between results reported for the field duplicate pairs, which are listed above. In general, RPD results were found to be within the acceptable limits for precision for all methods. Results for several VOCs, several metals, and hexavalent chromium did have RPDs that were greater than the control limit of 25 percent. These results were qualified as estimated (J) in the primary field sample, as listed in Table 2. No target analytes were detected in any method blank, equipment rinse blank, or trip blank samples with the following exceptions:

Several method blanks associated with the VOC analysis of 87 samples contained benzene.

Associated samples that had the constituents detected at concentrations greater than ten times the blank concentration, or no detectable concentrations, were not qualified. Samples that had low levels (below the RL) of the constituents detected were qualified as not detected at the reporting limit (U). Samples that had the constituents detected at concentrations below the blank concentration and above the RL were qualified as not detected at the estimated reporting limit (UJ) and the reporting limit was raised to the sample concentration.

One method blank associated with the metals analysis of two sample contained arsenic and beryllium. Both metals were not detected in the samples, so no data were qualified.


Page 4 of 4

Twelve equipment rinse blanks associated with 106 samples contained acetone, methylene

chloride, and one or more metals. Acetone was detected below the reporting limit in 15 samples and was qualified as not detected at the reporting limit (U) with no bias. The remaining constituents were either not detected in the samples, or were detected at concentrations that were greater than ten times the blank result, and were not qualified.

One equipment blank associated with seven samples contained acetone, copper, and zinc. Acetone was not detected in the samples, so no data were qualified. Samples that had low levels (below the RL) of copper and zinc detected were qualified as not detected at the reporting limit (U). Samples that had the metals detected at concentrations below the blank concentration and above the RL were qualified estimated (J) with a high bias.

Sample dilutions for all analyses were performed appropriately with respect to the analyte present in the highest concentration. All results that were reported had the lowest dilution factor possible while still detected within the calibration range of the instrument. All data submitted for this project are of known and acceptable quality as qualified, based on laboratory-established control limits and the data quality objectives. These data are considered acceptable for their intended purposes.

TABLE 1

SAMPLE COLLECTION SUMMARYHONEYWELL NORTH HOLLYWOOD SITE NHE SUPPLEMENTAL DESIGN INVESTIGATION

NORTH HOLLYWOOD, CALIFORNIA(Page 1 of 7)

Investigation Location Field Identification Sample TypeCollection

DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

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EPA

719

9

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827

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NHE Pre-design QCTB SB-31-TB01-102611 Field QC 10/26/11 0840 11-10-1850-1 XNHE Pre-design SB-31 SB-31-11.0-S-102611 Primary 10/26/11 0849 11-10-1850-2 X X X X X XNHE Pre-design SB-31 SB-31-21.0-S-102611 Primary 10/26/11 0918 11-10-1850-3 X X X X X XNHE Pre-design SB-31 SB-31-31.0-S-102611 Primary 10/26/11 0940 11-10-1850-4 X X X X X XNHE Pre-design SB-31 SB-31-70.5-S-102611 Primary 10/26/11 1203 11-10-1850-5 X X X X X XNHE Pre-design QCEB SB-31-EB01-102611 Field QC 10/26/11 1249 11-10-1850-6 X X X X X XNHE Pre-design SB-31 SB-31-90.5-S-102611 Primary 10/26/11 1453 11-10-1850-7 X X X X X XNHE Pre-design SB-31 SB-31-100.5-S-102611 Primary 10/26/11 1543 11-10-1850-8 X X X X X XNHE Pre-design QCTB SB-31-TB02-102711 Field QC 10/27/11 0730 11-10-1922-1 XNHE Pre-design SB-31 SB-31-125.5-S-102711 Primary 10/27/11 0752 11-10-1922-2 X X X X X XNHE Pre-design SB-31 SB-31-150.5-S-102711 Primary 10/27/11 0930 11-10-1922-3 X X X X X XNHE Pre-design SB-31 SB-31-175.5-S-102711 Primary 10/27/11 1046 11-10-1922-4 X X X X X XNHE Pre-design SB-31 SB-31-200.5-S-102711 Primary 10/27/11 1242 11-10-1922-5 X X X X X XNHE Pre-design SB-31 SB-31-DUP01-S-102711 Duplicate of SB-31-225.5-S-102711 10/27/11 0000 11-10-1922-6 X X X X X XNHE Pre-design QCEB SB-31-EB02-102711 Field QC 10/27/11 1301 11-10-1922-7 X X X X X XNHE Pre-design SB-31 SB-31-225.5-S-102711 Primary 10/27/11 1409 11-10-1922-8 X X X X X XNHE Pre-design SB-31 SB-31-250.5-S-102711 Primary 10/27/11 1536 11-10-1922-9 X X X X X XNHE Pre-design QCTB SB-30-TB01-102611 Field QC 10/31/11 0730 11-10-2114-1 XNHE Pre-design SB-30 SB-30-11.0-S-103111 Primary 10/31/11 0753 11-10-2114-2 X X X X X XNHE Pre-design SB-30 SB-30-21.0-S-103111 Primary 10/31/11 0824 11-10-2114-3 X X X X X XNHE Pre-design SB-30 SB-30-31.0-S-103111 Primary 10/31/11 0905 11-10-2114-4 X X X X X XNHE Pre-design SB-30 SB-30-41.0-S-103111 Primary 10/31/11 0937 11-10-2114-5 X X X X X XNHE Pre-design SB-30 SB-30-51.0-S-103111 Primary 10/31/11 1023 11-10-2114-6 X X X X X XNHE Pre-design SB-30 SB-30-60.5-S-103111 Primary 10/31/11 1104 11-10-2114-7 X X X X X XNHE Pre-design SB-30 SB-30-70.5-S-103111 Primary 10/31/11 1156 11-10-2114-8 X X X X X XNHE Pre-design QCEB SB-30-EB01-103111 Field QC 10/31/11 1245 11-10-2114-9 X X X X X XNHE Pre-design QCTB SB-30-TB02-110111 Field QC 11/01/11 0740 11-11-0073-1 X

X

XXXXXX

XXXX

X

X

X

X

X

X

XXXXXX

TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

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EPA

719

9

1,4-

Dio

xane

by

EPA

827

0C(M

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Perc

hlor

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by E

PA 3

14.0

1,2,

3-Tr

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ropa

ne b

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L 52

4M

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lam

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NHE Pre-design SB-30 SB-30-125.5-S-110111 Primary 11/01/11 0756 11-11-0073-2 X X X X X XNHE Pre-design SB-30 SB-30-185.0-S-110111 Primary 11/01/11 1242 11-11-0073-3 X X X X X XNHE Pre-design SB-30 SB-30-DUP01-S-110111 Duplicate of SB-30-185.0-S-110111 11/01/11 0000 11-11-0073-4 X X X X X XNHE Pre-design QCEB SB-30-EB02-110111 Field QC 11/01/11 1329 11-11-0073-5 X X X X X XNHE Pre-design SB-30 SB-30-200.5-S-110111 Primary 11/01/11 1451 11-11-0073-6 X X X X X XNHE Pre-design SB-30 SB-30-225.0-S-110111 Primary 11/01/11 1558 11-11-0073-7 X X X X X XNHE Pre-design QCTB SB-30-TB03-110211 Field QC 11/02/11 1020 11-11-0160-1 XNHE Pre-design SB-30 SB-30-250.0-S-110211 Primary 11/02/11 1035 11-11-0160-2 X X X X X XNHE Pre-design QCEB SB-30-EB03-110111 Field QC 11/02/11 1323 11-11-0160-3 X X X X X XNHE Pre-design QCTB GW-30-TB01-110311 Field QC 11/03/11 1030 11-11-0272-1 XNHE Pre-design GW-30 GW-30-11.0-S-110311 Primary 11/03/11 1057 11-11-0272-2 X X X X X XNHE Pre-design GW-30 GW-30-21.0-S-110311 Primary 11/03/11 1123 11-11-0272-3 X X X X X XNHE Pre-design GW-30 GW-30-31.0-S-110311 Primary 11/03/11 1144 11-11-0272-4 X X X X X XNHE Pre-design GW-30 GW-30-41.0-S-110311 Primary 11/03/11 1210 11-11-0272-5 X X X X X XNHE Pre-design QCEB GW-30-EB01-110311 Field QC 11/03/11 1256 11-11-0272-6 X X X X X XNHE Pre-design GW-30 GW-30-51.0-S-110311 Primary 11/03/11 1320 11-11-0272-7 X X X X X XNHE Pre-design GW-30 GW-30-70.5-S-110311 Primary 11/03/11 1458 11-11-0272-8 X X X X X XNHE Pre-design GW-30 GW-30-80.5-S-110311 Primary 11/03/11 1542 11-11-0272-9 X X X X X XNHE Pre-design QCTB GW-30-TB02-110411 Field QC 11/04/11 0730 11-11-0405-1 XNHE Pre-design GW-30 GW-30-91.0-S-110411 Primary 11/04/11 0744 11-11-0405-2 X X X X X XNHE Pre-design GW-30 GW-30-101.0-S-110411 Primary 11/04/11 0828 11-11-0405-3 X X X X X XNHE Pre-design GW-30 GW-30-110.5-S-110411 Primary 11/04/11 0926 11-11-0405-4 X X X X X XNHE Pre-design GW-30 GW-30-120.5-S-110411 Primary 11/04/11 1025 11-11-0405-5 X X X X X XNHE Pre-design GW-30 GW-30-130.5-S-110411 Primary 11/04/11 1113 11-11-0405-6 X X X X X XNHE Pre-design GW-30 GW-30-DUP01-S-110411 Duplicate of GW-30-130.5-S-110411 11/04/11 0000 11-11-0405-7 X X X X X XNHE Pre-design GW-30 GW-30-140.5-S-110411 Primary 11/04/11 1203 11-11-0405-8 X X X X X XNHE Pre-design QCEB GW-30-EB02-110411 Field QC 11/04/11 1252 11-11-0405-9 X X X X X X

X

XX

XXX

XXX

XXX

XXXXXX

XX

X

X

X

X

TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

I by

EPA

719

9

1,4-

Dio

xane

by

EPA

827

0C(M

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Perc

hlor

ate

by E

PA 3

14.0

1,2,

3-Tr

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ropa

ne b

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L 52

4M

N-N

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lam

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NHE Pre-design GW-30 GW-30-150.5-S-110411 Primary 11/04/11 1354 11-11-0405-10 X X X X X XNHE Pre-design GW-30 GW-30-170.5-S-110411 Primary 11/04/11 1536 11-11-0405-11 X X X X X XNHE Pre-design QCTB GW-30-TB03-110711 Field QC 11/07/11 0740 11-11-0559-1 XNHE Pre-design GW-30 GW-30-180.5-S-110711 Primary 11/04/11 0800 11-11-0559-2 X X X X X XNHE Pre-design GW-30 GW-30-DUP02-S-110711 Duplicate of GW-30-180.5-S-110711 11/07/11 0000 11-11-0559-3 X X X X X XNHE Pre-design GW-30 GW-30-190.5-S-110711 Primary 11/07/11 0857 11-11-0559-4 X X X X X XNHE Pre-design GW-30 GW-30-200.5-S-110711 Primary 11/07/11 0943 11-11-0559-5 X X X X X XNHE Pre-design GW-30 GW-30-DUP03-S-110711 Duplicate of GW-30-200.5-S-110711 11/07/11 0000 11-11-0559-6 X X X X X XNHE Pre-design GW-30 GW-30-210.5-S-110711 Primary 11/07/11 1031 11-11-0559-7 X X X X X XNHE Pre-design QCEB GW-30-EB03-110711 Field QC 11/07/11 1228 11-11-0559-8 X X X X X XNHE Pre-design QCTB GW-31-TB01-W-110811 Field QC 11/08/11 0800 11-11-0675-1 XNHE Pre-design GW-31 GW-31-11.5-S-110811 Primary 11/07/11 1113 11-11-0675-2 X X X X X XNHE Pre-design GW-31 GW-31-21.5-S-110811 Primary 11/08/11 1240 11-11-0675-3 X X X X X XNHE Pre-design GW-31 GW-31-31-S-110811 Primary 11/08/11 1300 11-11-0675-4 X X X X X XNHE Pre-design GW-31 GW-31-41.5-S-110811 Primary 11/08/11 1313 11-11-0675-5 X X X X X XNHE Pre-design GW-31 GW-31-51.5-S-110811 Primary 11/08/11 1415 11-11-0675-6 X X X X X XNHE Pre-design GW-31 GW-31-61.5-S-110811 Primary 11/08/11 1456 11-11-0675-7 X X X X X XNHE Pre-design GW-31 GW-31-71-S-110811 Primary 11/08/11 1536 11-11-0675-8 X X X X X XNHE Pre-design GW-31 GW-31-81-S-110811 Primary 11/08/11 1612 11-11-0675-9 X X X X X XNHE Pre-design QCEB GW-31-EB01-W-110811 Field QC 11/08/11 1630 11-11-0675-10 X X X X X XNHE Pre-design QCTB GW-31-TB02-W-110911 Field QC 11/09/11 0800 11-11-0820-1 XNHE Pre-design GW-31 GW-31-90.5-S-110911 Primary 11/08/11 0812 11-11-0820-2 X X X X X XNHE Pre-design GW-31 GW-31-101-S-110911 Primary 11/09/11 0858 11-11-0820-3 X X X X XNHE Pre-design GW-31 GW-31-111-S-110911 Primary 11/09/11 0933 11-11-0820-4 X X X X X XNHE Pre-design GW-31 GW-31-DUP01-S-110911 Duplicate of GW-31-111-S-110711 11/09/11 0000 11-11-0820-5 X X X X XNHE Pre-design GW-31 GW-31-121-S-110911 Primary 11/09/11 1021 11-11-0820-6 X X X X XNHE Pre-design GW-31 GW-31-131.5-S-110911 Primary 11/09/11 1404 11-11-0820-7 X X X X X

XX

XX

X

XX

X

XX

XX

X

XXX

XXXX

XX

XX

TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

I by

EPA

719

9

1,4-

Dio

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by

EPA

827

0C(M

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Perc

hlor

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by E

PA 3

14.0

1,2,

3-Tr

ichl

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ne b

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L 52

4M

N-N

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lam

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625C

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(wat

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IM (s

oil)

NHE Pre-design GW-31 GW-31-141.5-S-110911 Primary 11/09/11 1539 11-11-0820-8 X X X X XNHE Pre-design GW-31 GW-31-151.5-S-110911 Primary 11/09/11 1618 11-11-0820-9 X X X X XNHE Pre-design QCEB GW-31-EB01-W-110911 Field QC 11/09/11 1630 11-11-0820-10 X X X X X XNHE Pre-design QCTB GW-31-TB03-W-111011 Field QC 11/10/11 0730 11-11-0972-1 XNHE Pre-design GW-31 GW-31-161.5-S-111011 Primary 11/09/11 0822 11-11-0972-2 X X X X XNHE Pre-design GW-31 GW-31-DUP02-S-111011 Duplicate of GW-31-161.5-S-111011 11/10/11 0000 11-11-0972-3 X X X X X XNHE Pre-design GW-31 GW-31-171-S-111011 Primary 11/10/11 0908 11-11-0972-4 X X X X X XNHE Pre-design GW-31 GW-31-181.5-S-111011 Primary 11/10/11 1004 11-11-0972-5 X X X X X XNHE Pre-design GW-31 GW-31-190.5-S-111011 Primary 11/10/11 1049 11-11-0972-6 X X X X X XNHE Pre-design GW-31 GW-31-201-S-111011 Primary 11/10/11 1131 11-11-0972-7 X X X X X XNHE Pre-design GW-31 GW-31-DUP03-S-111011 Duplicate of GW-31-201-S-111011 11/10/11 0000 11-11-0972-8 X X X X X XNHE Pre-design GW-31 GW-31-211-S-111011 Primary 11/10/11 1317 11-11-0972-9 X X X X X XNHE Pre-design GW-31 GW-31-220.5-S-111011 Primary 11/10/11 1405 11-11-0972-10 X X X X X XNHE Pre-design GW-31 GW-31-231.5-S-111011 Primary 11/10/11 1451 11-11-0972-11 X X X X X XNHE Pre-design QCEB GW-31-EB01-W-111011 Field QC 11/10/11 1630 11-11-0972-12 X X X X X XNHE Pre-design QCTB GW-34-TB01-111711 Field QC 11/17/11 1300 11-11-1450-1 XNHE Pre-design GW-34 GW-34-11.0-S-111711 Primary 11/17/11 1413 11-11-1450-2 X X X X XNHE Pre-design GW-34 GW-34-21.0-S-111711 Primary 11/17/11 1442 11-11-1450-3 X X X X X XNHE Pre-design GW-34 GW-34-31.0-S-111711 Primary 11/17/11 1506 11-11-1450-4 X X X X X XNHE Pre-design GW-34 GW-34-41.0-S-111711 Primary 11/17/11 1529 11-11-1450-5 X X X X X XNHE Pre-design GW-34 GW-34-51.0-S-111711 Primary 11/17/11 1550 11-11-1450-6 X X X X X XNHE Pre-design QCEB GW-34-EB01-111711 Field QC 11/17/11 1625 11-11-1450-7 X X X X X XNHE Pre-design QCTB GW-33B-TB01-W-111711 Field QC 11/17/11 0700 11-11-1451-1 XNHE Pre-design GW-33B GW-33B-11-S-111711 Primary 11/17/11 0715 11-11-1451-2 X X X X X XNHE Pre-design GW-33B GW-33B-DUP01-S-111711 Duplicate of GW-33B-11-S-111711 11/17/11 0000 11-11-1451-3 X X X X X XNHE Pre-design GW-33B GW-33B-21.5-S-111711 Primary 11/17/11 0740 11-11-1451-4 X X X X X XNHE Pre-design GW-33B GW-33B-31.5-S-111711 Primary 11/17/11 0758 11-11-1451-5 X X X X X X

XX

XX

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X

XXXX

X

X

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TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

I by

EPA

719

9

1,4-

Dio

xane

by

EPA

827

0C(M

)

Perc

hlor

ate

by E

PA 3

14.0

1,2,

3-Tr

ichl

orop

ropa

ne b

y SR

L 52

4M

N-N

itros

odim

ethy

lam

ine

by E

PA 1

625C

M

(wat

er) o

r 827

0C S

IM (s

oil)

NHE Pre-design GW-33B GW-33B-41.5-S-111711 Primary 11/17/11 0817 11-11-1451-6 X X X X X XNHE Pre-design GW-33B GW-33B-50.5-S-111711 Primary 11/17/11 0834 11-11-1451-7 X X X X X XNHE Pre-design GW-33B GW-33B-60.5-S-111711 Primary 11/17/11 0852 11-11-1451-8 X X X X X XNHE Pre-design GW-33B GW-33B-71-S-111711 Primary 11/17/11 0912 11-11-1451-9 X X X X XNHE Pre-design GW-33B GW-33B-81-S-111711 Primary 11/17/11 0944 11-11-1451-10 X X X X X XNHE Pre-design GW-33B GW-33B-91-S-111711 Primary 11/17/11 1011 11-11-1451-11 X X X X XNHE Pre-design GW-33B GW-33B-101.5-S-111711 Primary 11/17/11 1036 11-11-1451-12 X X X X XNHE Pre-design GW-33B GW-33B-111-S-111711 Primary 11/17/11 1114 11-11-1451-13 X X X X XNHE Pre-design GW-33B GW-33B-120.5-S-111711 Primary 11/17/11 1312 11-11-1451-14 X X X X XNHE Pre-design GW-33B GW-33B-131.5-S-111711 Primary 11/17/11 1446 11-11-1451-15 X X X X XNHE Pre-design GW-33B GW-33B-141-S-111711 Primary 11/17/11 1514 11-11-1451-16 X X X X XNHE Pre-design GW-33B GW-33B-151-S-111711 Primary 11/17/11 1553 11-11-1451-17 X X X X XNHE Pre-design QCEB GW-33B-EB01-W-111711 Field QC 11/17/11 1630 11-11-1451-18 X X X X X XNHE Pre-design QCTB GW-34-TB02-111811 Field QC 11/18/11 0720 11-11-1556-1 XNHE Pre-design GW-34 GW-34-61.0-S-111811 Primary 11/17/11 0731 11-11-1556-2 X X X X X XNHE Pre-design GW-34 GW-34-71.0-S-111811 Primary 11/18/11 0815 11-11-1556-3 X X X X X XNHE Pre-design GW-34 GW-34-80.5-S-111811 Primary 11/18/11 0906 11-11-1556-4 X X X X X XNHE Pre-design GW-34 GW-34-90.5-S-111811 Primary 11/18/11 1020 11-11-1556-5 X X X X X XNHE Pre-design GW-34 GW-34-110.5-S-111811 Primary 11/18/11 1131 11-11-1556-6 X X X X X XNHE Pre-design QCEB GW-34-EB02-111811 Field QC 11/18/11 1335 11-11-1556-7 X X X X X XNHE Pre-design GW-34 GW-34-120.5-S-111811 Primary 11/18/11 1405 11-11-1556-8 X X X X X XNHE Pre-design GW-34 GW-34-130.5-S-111811 Primary 11/18/11 1429 11-11-1556-9 X X X X X XNHE Pre-design GW-34 GW-34-140.5-S-111811 Primary 11/18/11 1502 11-11-1556-10 X X X X X XNHE Pre-design GW-34 GW-34-150.0-S-111811 Primary 11/18/11 1537 11-11-1556-11 X X X X X XNHE Pre-design GW-34 GW-34-DUP01-S-111811 Duplicate of GW-34-150.0-S-111811 11/18/11 0000 11-11-1556-12 X X X X X XNHE Pre-design QCTB GW-33B-TB02-W-111811 Field QC 11/18/11 0700 11-11-1557-1 XNHE Pre-design GW-33B GW-33B-161-S-111811 Primary 11/18/11 0723 11-11-1557-2 X X X X X

XX

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XX

XXXX

XXX

XXX

XX

X

X

X

TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

I by

EPA

719

9

1,4-

Dio

xane

by

EPA

827

0C(M

)

Perc

hlor

ate

by E

PA 3

14.0

1,2,

3-Tr

ichl

orop

ropa

ne b

y SR

L 52

4M

N-N

itros

odim

ethy

lam

ine

by E

PA 1

625C

M

(wat

er) o

r 827

0C S

IM (s

oil)

NHE Pre-design GW-33B GW-33B-171-S-111811 Primary 11/18/11 0757 11-11-1557-3 X X X X X XNHE Pre-design GW-33B GW-33B-181.5-S-111811 Primary 11/18/11 0836 11-11-1557-4 X X X X XNHE Pre-design GW-33B GW-33B-DUP02-S-111811 Duplicate of GW-33B-181.5-S-111811 11/18/11 0000 11-11-1557-5 X X X X X XNHE Pre-design GW-33B GW-33B-191-S-111811 Primary 11/18/11 0918 11-11-1557-6 X X X X X XNHE Pre-design GW-33B GW-33B-201-S-111811 Primary 11/18/11 0950 11-11-1557-7 X X X X X XNHE Pre-design GW-33B GW-33B-211-S-111811 Primary 11/18/11 1018 11-11-1557-8 X X X X X XNHE Pre-design GW-33B GW-33B-221-S-111811 Primary 11/18/11 1057 11-11-1557-9 X X X X X XNHE Pre-design GW-33B GW-33B-231-S-111811 Primary 11/18/11 1232 11-11-1557-10 X X X X X XNHE Pre-design GW-33B GW-33B-240.5-S-111811 Primary 11/18/11 1300 11-11-1557-11 X X X X X XNHE Pre-design QCTB GW-33B-TB01-W-111711 Field QC 11/21/11 0740 11-11-1697-1 XNHE Pre-design GW-33B GW-34-160.5-S-112111 Primary 11/21/11 0759 11-11-1697-2 X X X X X XNHE Pre-design GW-33B GW-34-DUP02-S-112111 Duplicate of GW-34-161.0-S-112111 11/21/11 0000 11-11-1697-3 X X X X X XNHE Pre-design GW-33B GW-34-170.5-S-112111 Primary 11/21/11 0841 11-11-1697-4 X X X X X XNHE Pre-design GW-33B GW-34-180.5-S-112111 Primary 11/21/11 0919 11-11-1697-5 X X X X X XNHE Pre-design GW-33B GW-34-190.5-S-112111 Primary 11/21/11 0958 11-11-1697-6 X X X X X XNHE Pre-design GW-33B GW-34-200.5-S-112111 Primary 11/21/11 1038 11-11-1697-7 X X X X X XNHE Pre-design GW-33B GW-34-210.5-S-112111 Primary 11/21/11 1127 11-11-1697-8 X X X X X XNHE Pre-design GW-33B GW-34-220.5-S-112111 Primary 11/21/11 1216 11-11-1697-9 X X X X X XNHE Pre-design GW-33B GW-34-DUP03-S-112111 Duplicate of GW-34-220.5-S-112111 11/21/11 0000 11-11-1697-10 X X X X X XNHE Pre-design QCEB GW-34-EB03-112111 Field QC 11/21/11 1630 11-11-1697-11 X X X X X XNHE Pre-design GW-33B GW-34-230.5-S-112111 Primary 11/21/11 1402 11-11-1697-12 X X X X X XNHE Pre-design GW-30 GW-30-122111 Primary 12/21/11 0820 11-12-1659-1 X X X X X XNHE Pre-design GW-31 GW-31-122111 Primary 12/21/11 0910 11-12-1659-2 X X X X X XNHE Pre-design GW-34 GW-34-122111 Primary 12/21/11 1005 11-12-1659-3 X X X X X XNHE Pre-design GW-33A GW-33A-122111 Primary 12/21/11 1100 11-12-1659-4 X X X X X XNHE Pre-design GW-33B GW-33B-122111 Primary 12/21/11 1155 11-12-1659-5 X X X X X XNHE Pre-design GW-32 GW-32-122111 Primary 12/21/11 1240 11-12-1659-6 X X X X X X

XXXXXXXXX

XXXX

XX

XXXXX

XXXXXX

TABLE 1




DateCollection

Time Lab ID Vola

tile

Org

anic

Com

poun

ds b

y EP

A 8

260B

Title

22

Met

alsa b

y EP

A 6

020/

7470

A/7

471A

Chr

omiu

m V

I by

EPA

719

9

1,4-

Dio

xane

by

EPA

827

0C(M

)

Perc

hlor

ate

by E

PA 3

14.0

1,2,

3-Tr

ichl

orop

ropa

ne b

y SR

L 52

4M

N-N

itros

odim

ethy

lam

ine

by E

PA 1

625C

M

(wat

er) o

r 827

0C S

IM (s

oil)

NHE Pre-design QCEB EB-122111 Primary 12/21/11 1310 11-12-1659-7 X X X X X XNHE Pre-design QCTB TB-122111 Primary 12/21/11 1312 11-12-1659-8 X X X X X XNHE Pre-design GW-32 DUP-122111 Duplicate of GW-32-122111 12/21/11 0000 11-12-1659-9 X X X X X X

a Title 22 Metals: Sb, As, Ba, Be, Cd, Cr, Co, Cu, Hg, Pb, Mo, Ni, Se, Ag, Tl, V, Zn

DUP - duplicate sampleEB - equipment rinsate BlankQC - quality control

XXX

TABLE 2

TABLE OF QUALIFIED DATAHONEYWELL NORTH HOLLYWOOD SITE NHE SUPPLEMENTAL DESIGN INVESTIGATION


Sample LaboratoryIdentification Identification Matrix Method Parameter Result Units Flag Bias Comment

SB-31-11.0-S-102611 11-10-1850-2 Soil EPA 8260B Benzene < 0.98 µg/kg U NA MB ContaminationSB-31-21.0-S-102611 11-10-1850-3 Soil EPA 8260B Acetone < 50 µg/kg U NA EB ContaminationSB-31-31.0-S-102611 11-10-1850-4 Soil EPA 8260B Benzene < 0.98 µg/kg U NA MB ContaminationSB-31-70.5-S-102611 11-10-1850-5 Soil EPA 8260B Benzene < 0.89 µg/kg U NA MB ContaminationSB-31-90.5-S-102611 11-10-1850-7 Soil EPA 8260B Benzene < 0.82 µg/kg U NA MB ContaminationSB-31-100.5-S-102611 11-10-1850-8 Soil EPA 8260B Acetone < 40 µg/kg U NA EB ContaminationSB-31-100.5-S-102611 11-10-1850-8 Soil EPA 8260B Benzene < 0.80 µg/kg U NA MB ContaminationSB-31-125.5-S-102711 11-10-1922-2 Soil EPA 8260B Acetone < 43 µg/kg U NA EB ContaminationSB-31-175.5-S-102711 11-10-1922-4 Soil EPA 8260B Acetone < 47 µg/kg U NA EB ContaminationSB-31-200.5-S-102711 11-10-1922-5 Soil EPA 8260B Acetone < 48 µg/kg U NA EB ContaminationSB-31-200.5-S-102711 11-10-1922-5 Soil EPA 8260B Benzene < 0.97 µg/kg U NA MB ContaminationSB-31-200.5-S-102711 11-10-1922-5 Soil EPA 6020 Barium 81.2 mg/kg J High MS/MSD %R > UCLSB-31-Dup01-S-102711 11-10-1922-6 Soil EPA 8260B Benzene < 0.94 µg/kg U NA MB ContaminationSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 8260B Benzene < 0.89 µg/kg U NA MB ContaminationSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Arsenic 0.635 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Barium 38.3 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Chromium 3.67 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Cobalt 2.48 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Copper 5.76 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Lead 2.14 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Nickel 2.76 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Vanadium 9.57 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 6020 Zinc 20.1 mg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 7199 Hexavalent chromium 44 µg/kg J NDT FD RPD > CLSB-31-225.5-S-102711 11-10-1922-8 Soil EPA 7471A Mercury 0.0138 mg/kg J NDT FD RPD > CLSB-31-250.5-S-102711 11-10-1922-9 Soil EPA 8260B Acetone < 43 µg/kg U NA EB ContaminationSB-31-250.5-S-102711 11-10-1922-9 Soil EPA 8260B Benzene < 1.5 µg/kg UJ High MB ContaminationSB-30-11.0-S-103111 11-10-2114-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLSB-30-11.0-S-103111 11-10-2114-2 Soil EPA 8260B Acetone < 49 µg/kg U NA EB ContaminationSB-30-21.0-S-103111 11-10-2114-3 Soil EPA 8260B Acetone < 50 µg/kg U NA EB ContaminationSB-30-31.0-S-103111 11-10-2114-4 Soil EPA 8260B Acetone < 49 µg/kg U NA EB ContaminationSB-30-41.0-S-103111 11-10-2114-5 Soil EPA 8260B Acetone < 42 µg/kg U NA EB ContaminationSB-30-51.0-S-103111 11-10-2114-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCL

TABLE 2




SB-30-51.0-S-103111 11-10-2114-6 Soil EPA 8260B Acetone < 43 µg/kg U NA EB ContaminationSB-30-60.5-S-103111 11-10-2114-7 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLSB-30-60.5-S-103111 11-10-2114-7 Soil EPA 8260B Acetone < 44 µg/kg U NA EB ContaminationSB-30-70.5-S-103111 11-10-2114-8 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLSB-30-70.5-S-103111 11-10-2114-8 Soil EPA 8260B Acetone < 46 µg/kg U NA EB ContaminationSB-30-125.5-S-110111 11-11-0073-2 Soil EPA 8260B Acetone < 47 µg/kg U NA EB ContaminationSB-30-185.0-S-110111 11-11-0073-3 Soil EPA 6020 Molybdenum 0.338 mg/kg J NDT FD RPD > CLSB-30-185.0-S-110111 11-11-0073-3 Soil EPA 7199 Hexavalent chromium 55 µg/kg J NDT FD RPD > CLSB-30-185.0-S-110111 11-11-0073-3 Soil EPA 7471A Mercury 0.0190 mg/kg J NDT FD RPD > CLSB-30-DUP01-110111 11-11-0073-4 Soil EPA 8260B Acetone < 49 µg/kg U NA EB ContaminationSB-30-200.5-S-110111 11-11-0073-6 Soil EPA 8260B Acetone < 47 µg/kg U NA EB ContaminationSB-30-250.0-S-110211 11-11-0160-2 Soil EPA 8260B Benzene < 0.90 µg/kg U NA MB ContaminationGW-30-11.0-S-110311 11-11-0270-2 Soil EPA 8260B Benzene < 0.94 µg/kg U NA MB ContaminationGW-30-21.0-S-110311 11-11-0270-3 Soil EPA 8260B Benzene < 0.90 µg/kg U NA MB ContaminationGW-30-31.0-S-110311 11-11-0270-4 Soil EPA 8260B Benzene < 0.96 µg/kg U NA MB ContaminationGW-30-31.0-S-110311 11-11-0270-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-41.0-S-110311 11-11-0270-5 Soil EPA 8260B Benzene < 0.97 µg/kg U NA MB ContaminationGW-30-51.0-S-110311 11-11-0270-7 Soil EPA 8260B Benzene < 0.94 µg/kg U NA MB ContaminationGW-30-91.0-S-110411 11-11-0405-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-101.0-S-110411 11-11-0405-3 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-101.0-S-110411 11-11-0405-3 Soil EPA 8260B Benzene < 0.85 µg/kg U NA MB ContaminationGW-30-110.5-S-110411 11-11-0405-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-120.5-S-110411 11-11-0405-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-130.5-S-110411 11-11-0405-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-130.5-S-110411 11-11-0405-6 Soil EPA 8260B Carbon disulfide 1.1 µg/kg J NDT FD RPD > CLGW-30-130.5-S-110411 11-11-0405-6 Soil EPA 6020 Barium 71.2 mg/kg J Low MSD %R < LCLGW-30-130.5-S-110411 11-11-0405-6 Soil EPA 6020 Molybdenum 0.732 mg/kg J NDT FD RPD > CLGW-30-130.5-S-110411 11-11-0405-6 Soil EPA 7471A Mercury 0.0423 mg/kg J NDT FD RPD > CL

GW-30-DUP01-S-110411 11-11-0405-7 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-DUP01-S-110411 11-11-0405-7 Soil EPA 8260B Benzene < 0.99 µg/kg U NA MB ContaminationGW-30-140.5-S-110411 11-11-0405-8 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-140.5-S-110411 11-11-0405-8 Soil EPA 8260B Benzene < 0.83 µg/kg U NA MB ContaminationGW-30-150.5-S-110411 11-11-0405-10 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCL

TABLE 2




GW-30-150.5-S-110411 11-11-0405-10 Soil EPA 8260B Benzene < 0.88 µg/kg U NA MB ContaminationGW-30-170.5-S-110411 11-11-0405-11 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-170.5-S-110411 11-11-0405-11 Soil EPA 8260B Benzene < 0.97 µg/kg U NA MB ContaminationGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 8260B Benzene < 0.80 µg/kg U NA MB ContaminationGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Arsenic 0.979 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Barium 70.3 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Chromium 13.4 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Cobalt 4.38 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Copper 13.1 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Lead 2.64 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Nickel 5.89 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 6020 Vanadium 15.5 mg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 7199 Hexavalent chromium 590 µg/kg J NDT FD RPD > CLGW-30-180.5-S-110711 11-11-0559-2 Soil EPA 7471A Mercury 0.0835 mg/kg J NDT FD RPD > CL

GW-30-DUP02-S-110711 11-11-0559-3 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-DUP02-S-110711 11-11-0559-3 Soil EPA 8260B Benzene < 0.86 µg/kg U NA MB ContaminationGW-30-190.5-S-110711 11-11-0559-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-190.5-S-110711 11-11-0559-4 Soil EPA 8260B Benzene < 1.6 µg/kg UJ High MB ContaminationGW-30-200.5-S-110711 11-11-0559-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-200.5-S-110711 11-11-0559-5 Soil EPA 8260B Benzene < 0.85 µg/kg U NA MB ContaminationGW-30-200.5-S-110711 11-11-0559-5 Soil EPA 6020 Molybdenum 0.388 mg/kg J NDT FD RPD > CLGW-30-200.5-S-110711 11-11-0559-5 Soil EPA 7471A Mercury 0.0563 mg/kg J NDT FD RPD > CL

GW-30-DUP03-S-110711 11-11-0559-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-30-DUP03-S-110711 11-11-0559-6 Soil EPA 8260B Benzene < 0.89 µg/kg U NA MB ContaminationGW-30-210.5-S-110711 11-11-0559-7 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-11.5-S-110811 11-11-0675-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-11.5-S-110811 11-11-0675-2 Soil EPA 8260B Benzene < 1.2 µg/kg UJ High MB ContaminationGW-31-21.5-S-110811 11-11-0675-3 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-21.5-S-110811 11-11-0675-3 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB ContaminationGW-31-31-S-110811 11-11-0675-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-31-S-110811 11-11-0675-4 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB Contamination

GW-31-41.5-S-110811 11-11-0675-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCL

TABLE 2




GW-31-41.5-S-110811 11-11-0675-5 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-31-51.5-S-110811 11-11-0675-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-51.5-S-110811 11-11-0675-6 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-31-61.5-S-110811 11-11-0675-7 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-61.5-S-110811 11-11-0675-7 Soil EPA 8260B Benzene < 0.99 µg/kg U NA MB ContaminationGW-31-71-S-110811 11-11-0675-8 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-71-S-110811 11-11-0675-8 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-31-81-S-110811 11-11-0675-9 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-81-S-110811 11-11-0675-9 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB Contamination

GW-31-90.5-S-110911 11-11-0820-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-101-S-110911 11-11-0820-3 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-101-S-110911 11-11-0820-3 Soil EPA 8260B Benzene < 0.96 µg/kg U NDT MB ContaminationGW-31-111-S-110911 11-11-0820-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-111-S-110911 11-11-0820-4 Soil EPA 6020 Arsenic 1.11 mg/kg J NDT FD RPD > CLGW-31-111-S-110911 11-11-0820-4 Soil EPA 6020 Chromium 8.92 mg/kg J NDT FD RPD > CLGW-31-111-S-110911 11-11-0820-4 Soil EPA 6020 Molybdenum 1.47 mg/kg J NDT FD RPD > CLGW-31-111-S-110911 11-11-0820-4 Soil EPA 6020 Zinc 39.7 mg/kg J Low PS %R < LCLGW-31-111-S-110911 11-11-0820-4 Soil EPA 7199 Hexavalent chromium 130 µg/kg J NDT FD RPD > CLGW-31-111-S-110911 11-11-0820-4 Soil EPA 7471A Mercury 0.0633 mg/kg J NDT FD RPD > CL

GW-31-DUP01-S-110911 11-11-0820-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-121-S-110911 11-11-0820-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCL

GW-31-131.5-S-110911 11-11-0820-7 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-141.5-S-110911 11-11-0820-8 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-151.5-S-110911 11-11-0820-9 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-171-S-111011 11-11-0972-4 Soil EPA 8260B Benzene < 0.93 µg/kg U NA MB Contamination

GW-31-181.5-S-111011 11-11-0972-5 Soil EPA 8260B Benzene < 0.90 µg/kg U NA MB ContaminationGW-31-190.5-S-111011 11-11-0972-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-190.5-S-111011 11-11-0972-6 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-31-201-S-111011 11-11-0972-7 Soil EPA 7199 Hexavalent chromium 79 µg/kg J NDT FD RPD > CLGW-31-201-S-111011 11-11-0972-7 Soil EPA 7471A Mercury 0.0312 mg/kg J NDT FD RPD > CLGW-31-201-S-111011 11-11-0972-7 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB Contamination

GW-31-DUP03-S-111011 11-11-0972-8 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB ContaminationGW-31-211-S-111011 11-11-0972-9 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB Contamination

TABLE 2




GW-31-220.5-S-111011 11-11-0972-10 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-31-220.5-S-111011 11-11-0972-10 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-31-231.5-S-111011 11-11-0972-11 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-11.0-S-111711 11-11-1450-2 Soil EPA 8260B Benzene < 0.88 µg/kg U NA MB ContaminationGW-34-21.0-S-111711 11-11-1450-3 Soil EPA 8260B Benzene < 0.95 µg/kg U NA MB ContaminationGW-34-31.0-S-111711 11-11-1450-4 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-31.0-S-111711 11-11-1450-4 Soil EPA 8260B Benzene < 0.92 µg/kg U NA MB ContaminationGW-34-41.0-S-111711 11-11-1450-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-41.0-S-111711 11-11-1450-5 Soil EPA 8260B Benzene < 1.1 µg/kg UJ High MB ContaminationGW-34-51.0-S-111711 11-11-1450-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-51.0-S-111711 11-11-1450-6 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-33B-11-S-111711 11-11-1451-2 Soil EPA 8260B Benzene < 0.96 µg/kg U NA MB ContaminationGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Barium 51.2 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Chromium 4.63 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Cobalt 3.45 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Copper 6.80 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Lead 1.58 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Molybdenum 0.131 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 6020 Nickel 3.53 mg/kg J NDT FD RPD > CLGW-33B-11-S-111711 11-11-1451-2 Soil EPA 7471A Mercury 0.0114 mg/kg J NDT FD RPD > CL

GW-33B-DUP01-S-111711 11-11-1451-3 Soil EPA 8260B Benzene < 0.95 µg/kg U NA MB ContaminationGW-33B-21.5-S-111711 11-11-1451-4 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-33B-31.5-S-111711 11-11-1451-5 Soil EPA 8260B Benzene < 1.2 µg/kg U NA MB ContaminationGW-33B-41.5-S-111711 11-11-1451-6 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB ContaminationGW-33B-50.5-S-111711 11-11-1451-7 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-33B-71-S-111711 11-11-1451-9 Soil EPA 8260B Benzene < 0.99 µg/kg U NA MB ContaminationGW-33B-81-S-111711 11-11-1451-10 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-61.0-S-111811 11-11-1556-2 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB ContaminationGW-34-71.0-S-111811 11-11-1556-3 Soil EPA 8260B Benzene < 1.1 µg/kg U NA MB ContaminationGW-34-120.5-S-111811 11-11-1556-8 Soil EPA 8260B Benzene < 0.82 µg/kg U NA MB ContaminationGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 8260B Benzene < 1.2 µg/kg U NA MB ContaminationGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 8260B Acetone 9.4 µg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Arsenic 1.12 mg/kg J NDT FD RPD > CL

TABLE 2




GW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Barium 56.5 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Chromium 4.15 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Cobalt 3.20 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Copper 8.23 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Lead 2.14 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Molybdenum 0.268 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Nickel 3.28 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Vanadium 13.3 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 6020 Zinc 24.4 mg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 7199 Hexavalent chromium 72 µg/kg J NDT FD RPD > CLGW-34-150.0-S-111811 11-11-1556-11 Soil EPA 7471A Mercury 0.0783 mg/kg J NDT FD RPD > CL

GW-34-DUP01-S-111811 11-11-1556-12 Soil EPA 8260B Benzene < 1.0 µg/kg U NA MB ContaminationGW-33B-181.5-S-111811 11-11-1557-4 Soil EPA 8260B Benzene 0.35 µg/kg J NDT FD RPD > CLGW-33B-181.5-S-111811 11-11-1557-4 Soil EPA 7471A Mercury 0.0327 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Barium 53.9 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Chromium 4.34 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Copper 6.82 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Molybdenum 0.775 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Nickel 3.57 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 6020 Vanadium 11.2 mg/kg J NDT FD RPD > CLGW-34-160.5-S-112111 11-11-1697-2 Soil EPA 7471A Mercury 0.0641 mg/kg J NDT FD RPD > CL

GW-34-DUP02-S-112111 11-11-1697-3 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-DUP02-S-112111 11-11-1697-3 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-170.5-S-112111 11-11-1697-4 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-180.5-S-112111 11-11-1697-5 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-180.5-S-112111 11-11-1697-5 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-190.5-S-112111 11-11-1697-6 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-190.5-S-112111 11-11-1697-6 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-200.5-S-112111 11-11-1697-7 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-210.5-S-112111 11-11-1697-8 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-210.5-S-112111 11-11-1697-8 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCL

TABLE 2




GW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Chromium 2.24 mg/kg J NDT FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Cobalt 1.87 mg/kg J NDT FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Copper 4.67 mg/kg J NDT FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Nickel 2.03 mg/kg J NDT FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Vanadium 7.15 mg/kg J NDT FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 6020 Zinc 15.1 mg/kg J NDT MS/MSD RPD > CL; FD RPD > CLGW-34-220.5-S-112111 11-11-1697-9 Soil EPA 7471A Mercury 0.0185 mg/kg J NDT FD RPD > CL

GW-34-DUP03-S-112111 11-11-1697-10 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-DUP03-S-112111 11-11-1697-10 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCLGW-34-DUP03-S-112111 11-11-1697-10 Soil EPA 6020 Zinc 21.5 mg/kg J NDT MS/MSD RPD > CLGW-34-230.5-S-112111 11-11-1697-12 Soil EPA 8270C SIM NDMA < 0.054 µg/kg UJ Low Surrogate %R < LCLGW-34-230.5-S-112111 11-11-1697-12 Soil EPA 6020 Silver < 0.0900 mg/kg UJ Low LCSD %R < LCL

GW-30-122111 11-12-1659-1 Water EPA 6020 Copper < 0.001 mg/L U NDT EB ContaminationGW-30-122111 11-12-1659-1 Water EPA 6020 Zinc < 0.00706 mg/L UJ High EB ContaminationGW-31-122111 11-12-1659-2 Water EPA 6020 Copper < 0.001 mg/L U NDT EB ContaminationGW-31-122111 11-12-1659-2 Water EPA 6020 Zinc < 0.00913 mg/L UJ High EB ContaminationGW-34-122111 11-12-1659-3 Water EPA 6020 Zinc < 0.00640 mg/L UJ High EB Contamination

GW-33A-122111 11-12-1659-4 Water EPA 6020 Copper < 0.001 mg/L U NDT EB ContaminationGW-33A-122111 11-12-1659-4 Water EPA 6020 Zinc 0.0118 mg/L J High EB ContaminationGW-33B-122111 11-12-1659-5 Water EPA 6020 Copper < 0.001 mg/L U NDT EB ContaminationGW-32-122111 11-12-1659-6 Water EPA 6020 Copper < 0.001 mg/L U NDT EB ContaminationGW-32-122111 11-12-1659-6 Water EPA 6020 Zinc 0.0121 mg/L J High EB Contamination; FD RPD > CLGW-32-122111 11-12-1659-6 Water EPA 6020 Selenium 0.000740 mg/L J High EB ContaminationDUP-122111 11-12-1659-9 Water EPA 6020 Zinc 0.0243 mg/L J High EB Contamination

%R - percent recoveryCL - control limitDUP - duplicate sampleEB - equipment blankEPA - Environmental Protection AgencyFD - field duplicateJ - result is estimated

TABLE 2




LCS/LCSD - laboratory control spike/laboratory control spike duplicateMB - method blankµg/kg - micrograms per kilogrammg/kg - milligrams per kilogrammg/L - milligrams per literMS/MSD - matrix spike/matrix spike duplicateNDMA - n-nitrosodimethylamineNDT - not determinedPSD - post digestion spike RPD - relative percent differenceSIM - selective ion monitoringTB - trip blankU - the analyte is not considered present above the reporting limitUJ - the result is not detected, however the method detection limit or reporting limit value is qualified as estimated

APPENDIX G

LABORATORY ANALYTICAL REPORTS (CD)

sems-rm docid # 1164448 san fernando valley superfund site · 2020. 11. 18. · action plan...

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