health-based evaluation of environmental data from ......sparrows point, and a comparison against...

Technical Memorandum

November, 2015

1

2595 Canyon Blvd., Suite 440 Boulder, CO 80302

Health-Based Evaluation of Environmental Data from Sparrows Point Site

Introduction

At the request of the Chesapeake Bay Foundation (CBF), Exponent has reviewed a database of

compiled information on environmental samples collected from locations around Sparrows

Point near Baltimore MD. The site data were screened against generic and site-specific health-

based screening values. All of the evaluations reported herein are focused on potential for

adverse human health effects. Potential effects on ecological receptors were not included in this

assessment.

The work was performed because CBF has concerns regarding the presence of contamination

that arose from operations on Sparrows Point. Previous sampling indicated that sediments in the

creek contained metals and other contaminants that exceeded levels indicative of the potential

for risks to health and the environment (McGee et al., 1999, 2004); the sediments of Bear Creek

were also found to be toxic (McGee et al., 2004). The intent of the present study is to assess

whether the most recently-collected environmental samples indicate concentrations of chemicals

that indicate the potential for harm to human health.

Data

The data evaluated in this assessment were compiled by the CBF and provided to Exponent in

electronic spreadsheets (Microsoft Excel format). The information that was provided included

data on:

• The concentration of 8 metals in sediment for each of 23 locations. The data included

duplicate analyses for 6 of these locations.

• The concentration of polychlorinated biphenyls (PCBs) and polycyclic aromatic

hydrocarbons (PAHs) in sediments for each of 10 locations

Exponent Reference 0806447.000.

Technical Memorandum November, 2015

Exponent Reference 0806447.000. 2

• The concentration of polycyclic aromatic hydrocarbons (PAHs) in surface water for each

of 10 locations.

A map of the sample locations is provided in Figure 1. These data are reported in the tables attached

to this memorandum, and form the basis of the health-based screening described below.

Methodology

This assessment provides a point-by-point comparison of site data against several risk-based

screening concentrations: the concentration value reported for each individual sediment or

surface water sampling location was compared to risk-based screening values. For sediments,

the assessment incorporates information regarding the depth below water surface, because this

determines whether direct contact could occur (with direct contact only likely for locations with

shallow water). While we make comparisons for all sediment sampling locations, four of these

locations are in locations where water is shallow enough that sediments may potentially be

contacted directly by people. Because no bathymetry data was available for sediment sample

locations, a navigation chart (Baltimore Harbor, MD) was downloaded from NOAA website

(http://www.charts.noaa.gov/), and the sediment and water sample locations were plotted on the

NOAA navigation chart and their approximate water depths estimated.

Figure 1 provides a map with sample locations indicated. Sediment sample locations C1, D1,

E1, and F1 appear to be located in shallow water where direct human contact might occur. Other

sediment locations can be used to provide insight into chemical concentrations present in

depositional sediments, but due to their depth below water surface, these locations are not likely

to be contacted directly by people.

Several risk-based screening values were used in this assessment. They include:

Regional Screening Levels from U.S. EPA. Formerly referred to as “Preliminary Remediation

Goals,” (or PRGs), these values are now more accurately referred to as screening levels. These

values reflect the concentration of a chemical in environmental media that would be associated

with an excess theoretical cancer risk of one in a million (10-6), or a hazard index of 0.1 for non-

cancer endpoints of toxicity. These screening concentrations have been developed by U.S. EPA

http://www.charts.noaa.gov/



based on default assumptions regarding possible levels of exposure to environmental media

under standardized exposure scenarios, and represent concentrations for individual contaminants

above which further investigation or site cleanup may be warranted. The RSLs used in this

assessment were downloaded from U.S. EPA in August 2015 from the EPA website

(http://www.epa.gov/region9/superfund/prg/). Both the values for residential and industrial

exposure scenarios were selected and used in the screening of site data.

Site-Specific Screening Levels. Two sets of site-specific screening values were also used as a

basis of comparison for screening site data. One set is the site-specific screening levels

calculated in the “Phase I Area, Sparrows Point Offshore Investigation,” and which are provided

in Appendix E of the Final Sparrows Point Offshore Investigation Work Plan that was

developed by EA Engineering on behalf of the Sparrows Point Environmental Trust (EA

Engineering, 2014). These include specific exposure scenarios for adults, youths (aged 6-16),

and watermen.

The second set of site-specific screening values used in this assessment is derived from the risk

assessment performed by EA Engineering for Coke Point (EA Engineering 2011). This

assessment included specific exposure scenarios for adults, youths (aged 6-16), young children

(< 6), and watermen. These values are presented in Appendix D of the final risk assessment for

Coke Point (EA Engineering, 2011), and include specific exposure scenarios for adults, youths

(aged 6-16), children (less than 6 years old), and watermen.

A summary of the exposure scenarios assessed in each of these site-specific assessments is

provided in Tables 1. These tables include a side-by-side comparison of the exposure

assumptions used in each assessment.

The results of the screening are provided in tabular format in the attached tables, and the

findings discussed briefly, below. For each of the screenings, the attached tables provide a

summary of the U.S.EPA screening levels, site specific screening levels for both Coke Point and

Sparrows Point, together with measured concentrations of chemicals from the most recent

sampling. The tables provide an indication where site concentrations exceed any of the

screening criteria.

http://www.epa.gov/region9/superfund/prg/



A final set of summary tables provides a concise summary of any exceedances identified in the

media from Sparrows Point.

Findings

The attached tables provide a detailed breakdown of the surface water and sediment data, along

with a screening against all of the screening criteria identified above. Included are:

Table 1: Provides a comparison of the exposure parameters used in developing site-specific

screening levels for Sparrows Point and Coke Point, and details of the chemical-specific factors,

such as assumed dermal absorption and GI absorption, that were included in the development of

site-specific screening levels.

Table 2: Provides a summary of the surface water concentrations of PAHs reported for

Sparrows Point, together with a screening of those concentrations against EPA RSLs and site-

specific screening concentrations for potential cancer risk. The table is organized by exposure

scenario, with separate screening for adults (Table 2a), adolescents (Table 2b), children (Table

2c), and watermen (Table 2d).

Table 3: Provides a summary of the surface water concentrations of PAHs reported for

Sparrows Point, together with a screening of those concentrations against EPA RSLs and site-

specific screening concentrations for non-cancer endpoints of toxicity. The table is organized

by exposure scenario, as described for Table 2.

Table 4: Provides a summary of the sample locations and chemicals that exceed the site-specific

screening values for PAHs in surface water as derived based on exposure assumptions for Coke

Point.

Table 5: Provides a summary of the concentrations of metals in samples from Sparrows Point,

and a comparison against EPA RSLs and site-specific screening levels for potential cancer risk

following dermal exposures to sediments. The table is organized by exposure scenario, as

described for Table 2.



Table 6: provides a summary of the concentrations of metals in samples from Sparrows Point,

and a comparison against EPA RSLs and site specific screening levels for non-cancer endpoints

of toxicity following dermal exposures to sediments. The table is organized by exposure

scenario, as described for Table 2.

Table 7: Provides a summary of the concentrations of PCBs and PAHs in sediment at Sparrows

Point, and a comparison against EPA RSLs and site-specific screening levels for cancer risk

following dermal exposure to sediments. The table is organized by exposure scenario, as

described for Table 2.

Table 8: Provides a summary of the concentrations of PCBs and PAHs in sediments at

Sparrows Point, and a comparison against EPA RSLs and site-specific screening levels for non-

cancer endpoints of toxicity. The table is organized by exposure scenario, as described for

Table 2.

Table 9: Provides a summary of samples where measured metal concentrations exceed site-

specific health-based screening levels, organized by sample location and exposure scenario.

Table 10: Provides a summary of samples where measured concentrations of PAHs and PCBs

exceed site-specific health-based screening levels, organized by sample location and exposure

scenario.

Table 11: Provides an summary of the screening results, presenting an indication of exceedances

of EPA RSLs for PAHs in surface water, and metals, PCBs, and PAHs in sediments.

A side-by-side comparison of exposure parameters used to calculate site-specific screening

levels for Sparrows Point and Coke Point is provided in Table 1. Review of the “chemical-

specific” information indicates that the same information is used in the assessments for both

sites. The comparison of scenarios and contact rates indicates that the largest difference

between the two assessments is the failure to include a young child scenario for the assessment

of Sparrows Point. This is potentially important because the young child scenario in the Coke

Point evaluation yields the most restrictive screening value for residential populations. For



“youth” and “adult” exposure scenarios, the input values to the exposure assessment are

generally very similar; the assumed skin surface area is slightly higher under the Sparrows Point

assessment, but the differences are negligible. However, the assumed exposure duration for

contact with surface water by an adult is significantly higher under the Coke Point assessment

(30 d/year, vs. 20 d/year for Sparrows Point).

The greatest discrepancy in input values to the calculation of screening values for the two

assessments is related to the assumed exposure scenario for watermen. In this case, several of

the site-specific values are higher under the Coke Point assessment, including values for skin

surface area exposed to sediment or water, and exposure duration. Some of the discrepancies

may result from using a different source of information for estimating exposures (e.g., EPA

exposure guidance from 1997 vs. 2011), but there is no basis for why watermen at Sparrows

Point were assumed to have a smaller portion of their arms exposed to water and sediment

(forearms and hands) than was assumed at Coke Point (forearms, upper arms, and hands)

despite an identical scenarios for the two locations. Additionally, he assumed bodyweight is

lower under the Coke Point assessment (70 kg vs, 80 kg for Sparrows Point). Each of these

differences (skin surface area, exposure duration, and bodyweight) will result is more

conservative (i.e., health protective) health-based screening values under the Coke Point

scenario. Given the similarities in the two locations, it is not clear why the assessments would

not have been better harmonized, and how one could justify screening values for Sparrows Point

that are less protective than those calculated for Coke Point.

PAHs in Surface Water

A sample-by-sample summary of measured concentrations of PAHs in surface water and

comparison to health-based screening values is provided in Tables 2a, b, c, and d, and Tables 3a,

b, c, and d. The first set (Tables 2) presents the screening based on exceeding cancer risk, and

the second sent (Tables 3) screening based on non-cancer endpoints of toxicity.

The analysis indicates that under most scenarios evaluated, there are no exceedances based on

non-cancer endpoints of toxicity. There are occasional exceedances of either the site-specific

screening levels based on exposure parameters for Coke Point for screening levels based on

cancer and occasional exceedances of EPA RSLs based on tapwater consumption. These



exceedances do not track with locations or specific chemicals, and generally the exceedance is

only slightly above the screening value (i.e., less than an order of magnitude). Not surprisingly,

the most common exceedance occurs under assumed exposures by watermen, with several

locations exceeding the screening levels.

The findings for PAHs in surface water are summarized in Table 4.

Metals, PCBs and PAHs in Sediments

The screening of sediment data is provided in Tables 5-8: with Tables 5 and 6 addressing

screening of metals against cancer and non-cancer screening levels, respectively. Tables 7 and

8 address screening of PCBs and PAHs against cancer and non-cancer screening levels,

respectively. In all instances, for these detailed analyses, the tables are nested (a, b, c, and d) to

provide specific information for each exposure scenario evaluated.

The metals concentrations in sediments reflect an area that has been affected by metals

deposition. These sediments have metal concentrations that are higher than ambient conditions

reported in prior evaluations. This assessment evaluates whether these elevated metals

concentrations also exceed health-based screening values. Of the metals, arsenic is most

noteworthy as sediment concentrations exceed the EPA RSL values for all exposure groups..

However, the concentrations of arsenic do not exceed the site-specific screening levels

developed for Sparrow Point or Coke Point. This reflects differences in assumptions concerning

exposures that are incorporated into the RSLs vs. the site-specific screening values.

Concentrations of chromium in sediment were screened against EPA’s RSLs and site-specific

screening levels assuming the chromium is present in the less toxic trivalent form. Review of

the risk assessment for Coke Point indicates that a composite sediment sample was analyzed for

hexavalent chromium to provide site-specific data regarding the species of chromium present.

The assessment provides this discussion:

“It is important to note that chromium speciation result for the sediment composite from the Coke Point Offshore Area was rejected during data validation due to poor spike recovery in laboratory quality assurance analyses. This occurs when the sediment binds a chemical tightly and analyses cannot detect its concentration fully, and is a function of the type of sediment. Chromium speciation results from the Patapsco River Background



Area indicated that over 96% of the chromium present in background sediment was trivalent. Based on this result, it is reasonable to assume that the Coke Point Offshore Area has similar conditions, and therefore the results for the trivalent chromium analysis were used in this assessment.

Although it is unconventional to use speciation data from a background location to infer

conditions at a contaminated site, it is highly unusual to find hexavalent chromium in benthic

sediments. In the hexavalent form, chromium is highly reactive, and been found to be reduced to

trivalent chromium in a matter of minutes in sediment environments, where it is then stable in

the trivalent form (e.g., as reviewed by D. Reible, 2014 ), and so would not be expected in

sediments of Sparrows Point.

As indicated on Table 5d and summarized on Table 9, arsenic concentrations in sediment

exceed the site-specific screening values for cancer endpoints for the waterman exposure

scenario that was developed for Coke Point. Arsenic concentrations do not exceed the site-

specific screening value for any scenario developed for Sparrows Point.

Based on a screening of metals in sediment against RSLs from U.S. EPA (Tables 5 and 6),

arsenic, and vanadium exceed the residential RSL at most locations, with cadmium, copper,

nickel, lead and zinc demonstrating occasional exceedances. Arsenic exceeds industrial RSLs at

all locations (one sample does not exceed the RSL, however a duplicate sample collected from

the same location shows exceedance).

Metals are naturally-occurring in the environment, so interpretation of exceedance of risk-based

screening values should be done cautiously. In the case of arsenic, natural background

concentrations of arsenic in soil are almost universally higher than risk-based screening levels.

Sediment data for Bear Creek range in arsenic concentration from 16.9 – 62.1 ug/g (data for

location F2 indicated a concentration of 2.1, but the duplicate sample at the same location was

21.7 ug/g, which is more consistent with other data for the site). The lower end of the range of

arsenic concentrations is likely in the range of background, but the higher concentrations, which

are reported for nearly all sample locations, appear to be uniformly above normal background

levels and could indicate some level of impact.



The screening of organic chemicals (PCBs and PAHs) in sediments are presented in Tables 7a-d

and 8a-d for cancer endpoints and non-cancer endpoints, respectively. Screening for each

exposure scenario is presented in individual tables. Most significantly, the results of this

screening indicate that the concentrations of PCBs in sediments exceed the site-specific

screening levels developed for Coke Point based on cancer endpoints of toxicity. The measured

concentrations of PCBs in sediments exceed this site-specific screening value by several orders

of magnitude at all locations tested: from two orders of magnitude to almost three orders of

magnitude for the locations with the highest PCB concentrations. Site-specific screening levels

for total PCBs based on non-cancer endpoints of toxicity were not exceeded at any location.

For PAHs in sediments, the concentration of four individual chemicals (benzo(a)anthracene,

benzo(b)fluoranthene, dibenzo(a,h)anthracene, and indeno(1,2,3-cd) pyrene) exceed the

residential RSL for cancer endpoints from U.S.EPA, but do not exceed either EPA’s RSL for

industrial land use nor the site-specific screening values developed for Sparrows Point or Coke

Point. None of the PAH health-based screening levels for non-cancer endpoints were exceeded

for any location for any receptor.

Overall this health-based screening indicates that the concentrations of some metals (particularly

arsenic and chromium) may indicate some site-specific contributions that warrant further

evaluation. PCB concentrations were present in all sediments but were generally less than 1

mg/kg, a value that usually does not trigger a sediment remediation but may trigger an

evaluation of sources to sediments. The highest PCB concentration – 1.09 mg/kg – was located

at nearshore location D1. Because the health-based screening levels for PCBs are low, all

locations exceeded the level.



References

EA Engineering, Science, and Technology, Inc. (2014). Work Plan for Offshore Investigation of the Phase I Area of the Sparrows Point Site, Baltimore Maryland. Prepared for Sparrows Point Environmental Trust. http://www.mde.state.md.us/programs/Land/MarylandBrownfieldVCP/mapping/Documents/Final%20Sparrows%20Point%20Offshore%20Investigation%20Work%20Plan.pdf

EA Engineering, Science, and Technology, Inc. (2011). Final risk assessment of offshore areas adjacent to the proposed Coke Point dredged material containment facility at Sparrows Point, Baltimore, MD. http://mpa.maryland.gov/misc/cokepoint/cp.pdf

Reible, D. D. 2014. Processes, Assessment and Remediation of Contaminated Sediments. D. D. Reible, Editor. SERDP ESTCP. Springer Science Business Media. New York.

http://www.mde.state.md.us/programs/Land/MarylandBrownfieldVCP/mapping/Documents/Final%20Sparrows%20Point%20Offshore%20Investigation%20Work%20Plan.pdf

http://www.mde.state.md.us/programs/Land/MarylandBrownfieldVCP/mapping/Documents/Final%20Sparrows%20Point%20Offshore%20Investigation%20Work%20Plan.pdf

http://mpa.maryland.gov/misc/cokepoint/cp.pdf

October 2, 2015 | P:\86\8606447_BearCreek\GIS\projects\bathymetry.mxd

Figure 1. Bear Creek sediment and water sample locations (June 2015)

November 2015

WS7

24

23

H2

H1

G3

G2

G1

F2

F1

E3

E2

E1

D3

D2

D1

C4

C3

C2

C1

B2

B1

A1

WS9

WS8

WS6WS5

WS4

WS3WS2

WS1

WS10

0 1,000 2,000 Feet

0 300 600 Meters

LEGEND

Sediment samplesWater samples

Note: Bathymetry soundings in feet

Source:The background image is NOAA RasterNavigational Chart 12281(Baltimore Harbor, MD).

Note:The numerical number in stream channel indicate water depth in feet.

Table 1. Comparison of exposure parameters used in site specific screening level calculationsSparrow Point and Coke Point

Exposure Parameters UnitsSparrows Point Coke Point Sparrows Point Coke Point Sparrows Point Coke Point

Dermal - SedimentSSA Skin Surface Area USEPA 2011, 2014 USEPA 1997b cm 2 4,090 3,870 3,760 3,870EF Exposure Frequency BPJ (1) BPJ (1) d/year 32 32 32 32ED Exposure Duration USEPA 2011, 2014 USEPA 1989 years 20 30 10 10CF Conversion Factor USEPA 1989 USEPA 1989 kg/mg 0.000001 0.000001 0.000001 0.000001AF Adherence Factor USEPA 2004 USEPA 2004 mg/cm 2 -event 0.07 0.07 0.2 0.2ABS Absorption Fraction USEPA 2004 USEPA 2004 unitless chemical specific chemical specific chemical specific chemical specificBW Body Weight USEPA 2011, 2014 USEPA 1997b kg 80 70 45 45ATc Averaging Time-Cancer USEPA 1989 USEPA 1989 d/yr 25,550 25,550 25,550 25,550ATnc Averaging Time-NonCancer USEPA 1989 USEPA 1989 d/yr 7,300 10,950 3,650 3,650Dermal - Surface WaterSA Skin Surface Area USEPA 2011, 2014 USEPA 2004 cm 2 20,900 18,000 13,350 13,350ET ET (Exposure Time) BPJ (2) BPJ (2) hours/day 2 2 2 2EF Exposure Frequency BPJ (2) BPJ (2) d/year 32 32 32 32ED Exposure Duration USEPA 2011, 2014 USEPA 1989 years 20 30 10 10CF Conversion Factor USEPA 1989 USEPA 1989 L/cm 3 0.001 0.001 0.001 0.001PC PC (Permeability Constant) USEPA 2004 cm/hr chemical specific chemical specific chemical specific chemical specificATc Averaging Time-Cancer USEPA 1989 USEPA 1989 d/yr 25,550 25,550 25,550 25,550ATnc Averaging Time-NonCancer USEPA 1989 USEPA 1989 d/yr 7,300 10,950 3,650 3,650BW Body Weight USEPA 2011, 2014 USEPA 1997b kg 80 70 45 45

Exposure Parameters UnitsSparrows Point Coke Point Sparrows Point Coke Point Sparrows Point Coke Point

Dermal - SedimentSSA Skin Surface Area USEPA 2011, 2014 USEPA 1997b cm 2 -- 2,620 2,530 3,900EF Exposure Frequency BPJ (1) BPJ (1) d/year -- 32 39 39ED Exposure Duration USEPA 2011, 2014 USEPA 1989 years -- 6 25 30CF Conversion Factor USEPA 1989 USEPA 1989 kg/mg -- 0.000001 0.000001 0.000001AF Adherence Factor USEPA 2004 USEPA 2004 mg/cm 2 -event -- 0.2 0.2 0.2ABS Absorption Fraction USEPA 2004 USEPA 2004 unitless -- chemical specific chemical specific chemical specificBW Body Weight USEPA 2011, 2014 USEPA 1997b kg -- 18 80 70ATc Averaging Time-Cancer USEPA 1989 USEPA 1989 d/yr -- 25,550 25,550 25,550ATnc Averaging Time-NonCancer USEPA 1989 USEPA 1989 d/yr -- 2,190 9,125 10,950Dermal - Surface WaterSA Skin Surface Area USEPA 2011, 2014 USEPA 2004 cm 2 -- 6,600 2,530 6,600ET ET (Exposure Time) BPJ (2) BPJ (2) hours/day -- 2 8 8EF Exposure Frequency BPJ (2) BPJ (2) d/year -- 32 39 39ED Exposure Duration USEPA 2011, 2014 USEPA 1989 years -- 6 25 30CF Conversion Factor USEPA 1989 USEPA 1989 L/cm 3 -- 0.001 0.001 0.001PC PC (Permeability Constant) USEPA 2004 cm/hr -- chemical specific chemical specific chemical specificATc Averaging Time-Cancer USEPA 1989 USEPA 1989 d/yr -- 25,550 25,550 25,550ATnc Averaging Time-NonCancer USEPA 1989 USEPA 1989 d/yr -- 2,190 9,125 10,950BW Body Weight USEPA 2011, 2014 USEPA 1997b kg -- 18 80 70

References Adult Youth (6-16)

References Child (<6) Watermen

Table 1. (cont.)

Notes:BPJ - Best Professional Judgement

Sparrow Points footnotes:

Coke Points footnotes:

(1) Skin surface area for the recreational user exposure to sediment assumes contact with lower legs and feet only. For the watermen, contact is with the hands and forearms only. The skin surface areas are the mean values. Individual body part surface areas are taken from Tables 7-2 and 7-12 of USEPA, 2011. For the adult recreational user, the surface area is taken from Table 7-12 for males where lower legs = 0.271 m2 and feet = 0.138m2 for a total skin surface area of 0.409m2 4,090 cm2). For the adolescent recreational user, the surface area for the feet = 0.105m2 were taken from Table 7-2 for a 11 to 16 year old. Skin surface area for the lower legs is not available for the adolescent, so the surface area lower legs for the adult were used (0.271m2) for a total skin surface area of 0.376 m2 (3,760cm2). For the watermen, the surface area for the forearms (0.146 m2) and hands (0.107 m2) were taken from Talbe 7-12 for males for a total skin surface area of 0.253 m2 (2,530 cm2).

(2) Skin surface area for recreational user exposure to surface water assumes full body exposure. For the watermen, contact is with the hands and forearms only. Individual body part surface areas are taken from Tables 7-1 and 7-10 of USEPA, 2011. The skin surface areas are the mean values. For the adult recreational user, full body surface area is the weighted average of mean values from Table 7-10 for adults, male and female 21+. For the adolescent recreational user, the whole body surface areas from Table 7-1 were averaged for the 6 to 11 age group (1.08 m2) and 11 to 16 age group (1.59 m2) for an average of 1.335 m2 (13,350 cm2). For the watermen, the skin surface areas are the same as the sediment exposure pathway.

(1) Contact with sediment will be with the feet and lower legs for recreational users. For the adult, the lower legs are 2,560 cm2 and the feet are 1,310 cm2, with a total of 3,870 cm2. For the child, the surface area for the the legs are 2,070 cm2 and the feet are 550 cm2, for a total of 2,620 cm2 (3 to 6 year age range). The watermen contact would be limited to the hands and forearms arms since contact to sediment is primarily while hauling fishing nets into boat. The arm SA at 2,910 cm2 and hands at 990 cm2. This results in an SA of 3,900 cm2.

(2) Swimming will 2 days per week during warmer months (June to September) for the recreational user. Fishing is expected to occur March through November, for a total of 9 months or 39 weeks. It is expected that a watermen would not fish exclusively in the Patapsco River near the Coke Point offshore environment. The watermen fishes near Coke Point 1 day/week for a total of 39 days/year.

Table 2a. Comparison of PAH results in surface water to Sparrows Point and Coke Point cancer screening levels (ug/L) for dermal exposure in adults

Client Sample ID 1 2 3 4 5 6 7 8 9 10Reporting Units Sparrows Pt Coke Pt Tapwater MCL ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

PAH Compounds1-Methylnaphthalene -- 19.2 1.1 NA 0.0018 J 0.0273 0.0023 J 0.0206 0.0012 J 0.0168 0.0026 J 0.0057 0.0023 J 0.0522 J2-Methylnaphthalene -- NA NA NA 0.0020 J 0.0332 0.0023 J 0.0200 0.0014 J 0.0168 0.0033 J 0.0073 0.0027 J 0.0120 JAcenaphthene -- NA NA NA ND 0.0450 0.0072 J 0.0455 0.0048 J 0.0375 0.0038 J 0.0095 0.0073 J 0.0949 JAcenaphthylene -- NA NA NA 0.0016 J 0.0158 0.0017 J 0.0150 0.0017 J 0.0121 0.0015 J 0.0059 0.0043 0.0051Anthracene -- NA NA NA 0.0027 0.0104 0.0034 0.0134 0.0028 0.0106 0.0043 0.0065 0.0065 0.0211Benzo(a)anthracene -- 0.151 0.012 NA 0.0026 0.0044 0.0066 0.0057 0.0051 0.0041 0.0030 0.0037 0.0036 0.0155Benzo(a)pyrene -- 0.0101 0.0034 0.2 ND ND 0.0086 0.0045 0.0022 J ND ND 0.0053 0.0034 J 0.0100 JBenzo(b)fluoranthene -- 0.101 0.034 NA 0.0023 J 0.0033 0.0058 0.0052 0.0057 0.0030 J 0.0060 0.0047 0.0038 0.0138Benzo(e)pyrene -- a NA NA ND ND 0.0073 0.0063 0.0047 0.0030 0.0048 0.0050 0.0041 0.0077Benzo(g,h,i)perylene -- NA NA NA 0.0025 0.0022 0.0077 0.0045 0.0047 0.0032 0.0040 0.0053 0.0049 0.0051Benzo(k)fluoranthene -- 1.03 0.34 NA 0.0019 J 0.0033 0.0072 0.0042 0.0037 0.0028 0.0034 0.0068 0.0055 0.0102Chrysene -- 11.9 3.4 NA 0.0015 J 0.0037 0.0082 0.0056 0.0055 0.0054 0.0060 0.0059 0.0062 0.0229Dibenzo(a,h)anthracene -- 0.00473 0.0034 NA 0.0011 J ND 0.0065 0.0032 0.0032 0.0014 J 0.0014 J 0.0039 0.0017 J 0.0025 JFluoranthene -- NA NA NA 0.0072 0.0235 0.0071 0.0259 0.0109 0.0188 0.0204 0.0091 0.0132 0.0482Fluorene -- NA NA NA 0.0021 J 0.0323 0.0029 J 0.0381 0.0027 J 0.0323 0.0023 J 0.0128 0.0090 0.0222Indeno(1,2,3-c,d)pyrene -- 0.0709 NA NA 0.0022 J 0.0022 J 0.0075 0.0051 0.0052 0.0022 J 0.0046 0.0048 0.0039 0.0054Naphthalene -- NA 0.17 NA 0.0051 0.1891 0.0046 0.1830 0.0055 0.1692 0.0063 0.0335 0.0090 0.6462Phenanthrene -- NA NA NA 0.0054 0.0571 0.0050 0.0682 0.0054 0.0553 0.0132 0.0181 0.0167 0.0903Pyrene -- NA NA NA 0.0052 0.0117 0.0052 0.0100 0.0073 0.0077 0.0112 0.0045 0.0073 0.0273Note:-- - this scenario was not evaluated by the assessmentJ - estimatedNA - no screening value was providedND - not detectedNo PAH screening levels were used at Sparrow's Point.Shaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA tapwater RSLsItalicized values exceed EPA MCLs

Adult screening levels U.S. EPA RSLs

Table 2b. Comparison of PAH results in surface water to Sparrows Point and Coke Point cancer screening levels (ug/L) for dermal exposure in adolescents (6-16 years)



Adolescent screening levels U.S. EPA RSLs

Table 2c. Comparison of PAH results in surface water to Sparrows Point and Coke Point cancer screening levels (ug/L) for dermal exposure in children (<6 years)



Childscreening levels U.S. EPA RSLs

Table 2d. Comparison of PAH results in surface water to Sparrows Point and Coke Point cancer screening levels (ug/L) for dermal exposure in watermen



Watermanscreening levels U.S. EPA RSLs

Table 3a. Comparison of PAH results in surface water to Sparrows Point and Coke Point non-cancer screening levels (ug/L) for dermal exposure in adults


PAH Compounds1-Methylnaphthalene -- 1,670 NA NA 0.0018 J 0.0273 0.0023 J 0.0206 0.0012 J 0.0168 0.0026 J 0.0057 0.0023 J 0.0522 J2-Methylnaphthalene -- 96.7 3.6 NA 0.0020 J 0.0332 0.0023 J 0.0200 0.0014 J 0.0168 0.0033 J 0.0073 0.0027 J 0.0120 JAcenaphthene -- 1,550 53 NA ND 0.0450 0.0072 J 0.0455 0.0048 J 0.0375 0.0038 J 0.0095 0.0073 J 0.0949 JAcenaphthylene -- 1,460 NA NA 0.0016 J 0.0158 0.0017 J 0.0150 0.0017 J 0.0121 0.0015 J 0.0059 0.0043 0.0051Anthracene -- 4,690 180 NA 0.0027 0.0104 0.0034 0.0134 0.0028 0.0106 0.0043 0.0065 0.0065 0.0211Benzo(a)anthracene -- NA NA NA 0.0026 0.0044 0.0066 0.0057 0.0051 0.0041 0.0030 0.0037 0.0036 0.0155Benzo(a)pyrene -- NA NA 0.2 ND ND 0.0086 0.0045 0.0022 J ND ND 0.0053 0.0034 J 0.0100 JBenzo(b)fluoranthene -- NA NA NA 0.0023 J 0.0033 0.0058 0.0052 0.0057 0.0030 J 0.0060 0.0047 0.0038 0.0138Benzo(e)pyrene -- a NA NA ND ND 0.0073 0.0063 0.0047 0.0030 0.0048 0.0050 0.0041 0.0077Benzo(g,h,i)perylene -- 59.4 NA NA 0.0025 0.0022 0.0077 0.0045 0.0047 0.0032 0.0040 0.0053 0.0049 0.0051Benzo(k)fluoranthene -- NA NA NA 0.0019 J 0.0033 0.0072 0.0042 0.0037 0.0028 0.0034 0.0068 0.0055 0.0102Chrysene -- NA NA NA 0.0015 J 0.0037 0.0082 0.0056 0.0055 0.0054 0.0060 0.0059 0.0062 0.0229Dibenzo(a,h)anthracene -- NA NA NA 0.0011 J ND 0.0065 0.0032 0.0032 0.0014 J 0.0014 J 0.0039 0.0017 J 0.0025 JFluoranthene -- 403 80 NA 0.0072 0.0235 0.0071 0.0259 0.0109 0.0188 0.0204 0.0091 0.0132 0.0482Fluorene -- 807 29 NA 0.0021 J 0.0323 0.0029 J 0.0381 0.0027 J 0.0323 0.0023 J 0.0128 0.0090 0.0222Indeno(1,2,3-c,d)pyrene -- NA NA NA 0.0022 J 0.0022 J 0.0075 0.0051 0.0052 0.0022 J 0.0046 0.0048 0.0039 0.0054Naphthalene -- 944 NA NA 0.0051 0.1891 0.0046 0.1830 0.0055 0.1692 0.0063 0.0335 0.0090 0.6462Phenanthrene -- 475 NA NA 0.0054 0.0571 0.0050 0.0682 0.0054 0.0553 0.0132 0.0181 0.0167 0.0903Pyrene -- 331 12 NA 0.0052 0.0117 0.0052 0.0100 0.0073 0.0077 0.0112 0.0045 0.0073 0.0273Note:-- - this scenario was not evaluated by the assessmentJ - estimatedNA - no screening value was providedND - not detectedNo PAH screening levels were used at Sparrow's Point.Shaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA tapwater RSLsItalicized values exceed EPA MCLs


Table 3b. Comparison of PAH results in surface water to Sparrows Point and Coke Point non-cancer screening levels (ug/L) for dermal exposure in adolescents (6-16 years)




Table 3c. Comparison of PAH results in surface water to Sparrows Point and Coke Point non-cancer screening levels (ug/L) for dermal exposure in children (<6 years)



Childscreening levels U.S. EPA RSLs

Table 3d. Comparison of PAH results in surface water to Sparrows Point and Coke Point non-cancer screening levels (ug/L) for dermal exposure in watermen


PAH Compounds1-Methylnaphthalene -- 933 NA NA 0.0018 J 0.0273 0.0023 J 0.0206 0.0012 J 0.0168 0.0026 J 0.0057 0.0023 J 0.0522 J2-Methylnaphthalene -- 54.1 3.6 NA 0.0020 J 0.0332 0.0023 J 0.0200 0.0014 J 0.0168 0.0033 J 0.0073 0.0027 J 0.0120 JAcenaphthene -- 866 53 NA ND 0.0450 0.0072 J 0.0455 0.0048 J 0.0375 0.0038 J 0.0095 0.0073 J 0.0949 JAcenaphthylene -- 817 NA NA 0.0016 J 0.0158 0.0017 J 0.0150 0.0017 J 0.0121 0.0015 J 0.0059 0.0043 0.0051Anthracene -- 2,620 180 NA 0.0027 0.0104 0.0034 0.0134 0.0028 0.0106 0.0043 0.0065 0.0065 0.0211Benzo(a)anthracene -- NA NA NA 0.0026 0.0044 0.0066 0.0057 0.0051 0.0041 0.0030 0.0037 0.0036 0.0155Benzo(a)pyrene -- NA NA 0.2 ND ND 0.0086 0.0045 0.0022 J ND ND 0.0053 0.0034 J 0.0100 JBenzo(b)fluoranthene -- NA NA NA 0.0023 J 0.0033 0.0058 0.0052 0.0057 0.0030 J 0.0060 0.0047 0.0038 0.0138Benzo(e)pyrene -- a NA NA ND ND 0.0073 0.0063 0.0047 0.0030 0.0048 0.0050 0.0041 0.0077Benzo(g,h,i)perylene -- 33.2 NA NA 0.0025 0.0022 0.0077 0.0045 0.0047 0.0032 0.0040 0.0053 0.0049 0.0051Benzo(k)fluoranthene -- NA NA NA 0.0019 J 0.0033 0.0072 0.0042 0.0037 0.0028 0.0034 0.0068 0.0055 0.0102Chrysene -- NA NA NA 0.0015 J 0.0037 0.0082 0.0056 0.0055 0.0054 0.0060 0.0059 0.0062 0.0229Dibenzo(a,h)anthracene -- NA NA NA 0.0011 J ND 0.0065 0.0032 0.0032 0.0014 J 0.0014 J 0.0039 0.0017 J 0.0025 JFluoranthene -- 226 80 NA 0.0072 0.0235 0.0071 0.0259 0.0109 0.0188 0.0204 0.0091 0.0132 0.0482Fluorene -- 451 29 NA 0.0021 J 0.0323 0.0029 J 0.0381 0.0027 J 0.0323 0.0023 J 0.0128 0.0090 0.0222Indeno(1,2,3-c,d)pyrene -- NA NA NA 0.0022 J 0.0022 J 0.0075 0.0051 0.0052 0.0022 J 0.0046 0.0048 0.0039 0.0054Naphthalene -- 528 NA NA 0.0051 0.1891 0.0046 0.1830 0.0055 0.1692 0.0063 0.0335 0.0090 0.6462Phenanthrene -- 266 NA NA 0.0054 0.0571 0.0050 0.0682 0.0054 0.0553 0.0132 0.0181 0.0167 0.0903Pyrene -- 185 12 NA 0.0052 0.0117 0.0052 0.0100 0.0073 0.0077 0.0112 0.0045 0.0073 0.0273Note:a This constituent was not evaluated by the assessment-- - this scenario was not evaluated by the assessmentJ - estimatedNA - no screening value was providedND - not detectedNo PAH screening levels were used at Sparrow's Point.Shaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA tapwater RSLsItalicized values exceed EPA MCLs

Watermanscreening levels U.S. EPA RSLs

Table 4. Exceedances of Coke Point screening levels for PAHs in surface water

Adult Adolescent Child Waterman Adult Adolescent Child Waterman1 -- -- -- -- -- -- -- --2 -- -- -- -- -- -- -- --3 D(a,h)A D(a,h)A B(a)P, D(a,h)A B(a)P, D(a,h)A -- -- -- --4 -- -- -- -- -- -- -- --5 -- -- -- -- -- -- -- --6 -- -- -- -- -- -- -- --7 -- -- -- -- -- -- -- --8 -- -- D(a,h)A D(a,h)A -- -- -- --9 -- -- -- -- -- -- -- --

10 -- B(a)P B(a)P B(a)P -- -- -- --Notes:

No Sparrows Point screening levels were exceeded-- - no exceedance

B(a)A - Benzo(a)anthraceneB(a)P - Benzo(a)pyrene

D(a,h)A - Dibenzo(a,h)anthracene

Cancer Screening Non-cancer ScreeningSample Location

Table 5a. Comparison of metal results in sediment to Sparrow's Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in adults

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 248 153 0.68 3.0 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt NA NA NA NA 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt NA NA NA NA 601.2 1720.9 856.7 3649.9 2742.2 1240.3 720.3 799.8 2414.2 2957.1Copper ug/g dry wt NA NA NA NA 144.3 343.4 114.0 224.7 201.2 176.6 139.6 186.7 208.7 248.6Lead ug/g dry wt NA NA NA NA 146.5 383.7 259.4 96.8 95.4 188.8 175.4 485.0 187.4 262.5Nickel ug/g dry wt NA NA NA NA 62.4 69.2 37.1 134.7 120.7 76.1 59.3 43.5 115.8 120.7Vanadium ug/g dry wt -- NA NA NA 188.0 241.0 246.9 538.3 501.9 239.1 191.9 225.5 245.0 289.7Zinc ug/g dry wt NA NA NA NA 705.8 2000.9 986.2 1328.1 1503.8 1655.3 983.3 1378.7 2088.6 2501.2

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 248 153 0.68 3.0 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt NA NA NA NA 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt NA NA NA NA 1281.8 888.2 876.0 1153.3 853.0 547.4 944.1 956.7 906.9 987.2Copper ug/g dry wt NA NA NA NA 176.2 138.6 138.0 163.8 147.8 79.2 145.0 174.6 167.0 155.5Lead ug/g dry wt NA NA NA NA 179.2 183.9 184.4 176.9 189.5 184.5 178.8 271.7 207.3 193.9Nickel ug/g dry wt NA NA NA NA 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- NA NA NA 211.7 193.7 171.7 240.1 195.5 177.9 186.4 228.8 213.2 206.9Zinc ug/g dry wt NA NA NA NA 1451.4 1171.1 1120.0 1569.2 1168.3 920.0 1455.0 1443.2 1335.7 1513.6

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 248 153 0.68 3.0 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt NA NA NA NA 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt NA NA NA NA 1066.1 1220.1 913.1 937.0 994.2 467.4 551.0 678.7 454.6Copper ug/g dry wt NA NA NA NA 183.3 315.5 164.2 188.7 203.6 98.5 126.6 158.3 132.0Lead ug/g dry wt NA NA NA NA 239.2 351.5 203.3 223.8 237.7 150.9 171.5 208.4 134.5Nickel ug/g dry wt NA NA NA NA 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- NA NA NA 239.2 289.1 200.6 230.0 235.7 158.5 213.6 252.9 151.7Zinc ug/g dry wt NA NA NA NA 1585.7 2229.8 1362.8 1479.2 1570.2 604.8 682.1 867.5 1017.8Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceed screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs


Adult U.S. EPA RSLs

Adult U.S. EPA RSLs

Table 5b. Comparison of metal results in sediment to Sparrow's Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in adolescent (6-16 years)

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 106 103 0.68 3.0 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt NA NA NA NA 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt NA NA NA NA 601.2 1720.9 856.7 3649.9 2742.2 1240.3 720.3 799.8 2414.2 2957.1Copper ug/g dry wt NA NA NA NA 144.3 343.4 114.0 224.7 201.2 176.6 139.6 186.7 208.7 248.6Lead ug/g dry wt NA NA NA NA 146.5 383.7 259.4 96.8 95.4 188.8 175.4 485.0 187.4 262.5Nickel ug/g dry wt NA NA NA NA 62.4 69.2 37.1 134.7 120.7 76.1 59.3 43.5 115.8 120.7Vanadium ug/g dry wt -- NA NA NA 188.0 241.0 246.9 538.3 501.9 239.1 191.9 225.5 245.0 289.7Zinc ug/g dry wt NA NA NA NA 705.8 2000.9 986.2 1328.1 1503.8 1655.3 983.3 1378.7 2088.6 2501.2

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 106 103 0.68 3.0 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt NA NA NA NA 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt NA NA NA NA 1281.8 888.2 876.0 1153.3 853.0 547.4 944.1 956.7 906.9 987.2Copper ug/g dry wt NA NA NA NA 176.2 138.6 138.0 163.8 147.8 79.2 145.0 174.6 167.0 155.5Lead ug/g dry wt NA NA NA NA 179.2 183.9 184.4 176.9 189.5 184.5 178.8 271.7 207.3 193.9Nickel ug/g dry wt NA NA NA NA 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- NA NA NA 211.7 193.7 171.7 240.1 195.5 177.9 186.4 228.8 213.2 206.9Zinc ug/g dry wt NA NA NA NA 1451.4 1171.1 1120.0 1569.2 1168.3 920.0 1455.0 1443.2 1335.7 1513.6

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 106 103 0.68 3.0 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt NA NA NA NA 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt NA NA NA NA 1066.1 1220.1 913.1 937.0 994.2 467.4 551.0 678.7 454.6Copper ug/g dry wt NA NA NA NA 183.3 315.5 164.2 188.7 203.6 98.5 126.6 158.3 132.0Lead ug/g dry wt NA NA NA NA 239.2 351.5 203.3 223.8 237.7 150.9 171.5 208.4 134.5Nickel ug/g dry wt NA NA NA NA 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- NA NA NA 239.2 289.1 200.6 230.0 235.7 158.5 213.6 252.9 151.7Zinc ug/g dry wt NA NA NA NA 1585.7 2229.8 1362.8 1479.2 1570.2 604.8 682.1 867.5 1017.8Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceed screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs




Table 5c. Comparison of metal results in sediment to Sparrow's Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in children (< 6 years)

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt -- 102 0.68 3.0 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt -- NA NA NA 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt -- NA NA NA 601.2 1720.9 856.7 3649.9 2742.2 1240.3 720.3 799.8 2414.2 2957.1Copper ug/g dry wt -- NA NA NA 144.3 343.4 114.0 224.7 201.2 176.6 139.6 186.7 208.7 248.6Lead ug/g dry wt -- NA NA NA 146.5 383.7 259.4 96.8 95.4 188.8 175.4 485.0 187.4 262.5Nickel ug/g dry wt -- NA NA NA 62.4 69.2 37.1 134.7 120.7 76.1 59.3 43.5 115.8 120.7Vanadium ug/g dry wt -- NA NA NA 188.0 241.0 246.9 538.3 501.9 239.1 191.9 225.5 245.0 289.7Zinc ug/g dry wt -- NA NA NA 705.8 2000.9 986.2 1328.1 1503.8 1655.3 983.3 1378.7 2088.6 2501.2

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt -- 102 0.68 3.0 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt -- NA NA NA 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt -- NA NA NA 1281.8 888.2 876.0 1153.3 853.0 547.4 944.1 956.7 906.9 987.2Copper ug/g dry wt -- NA NA NA 176.2 138.6 138.0 163.8 147.8 79.2 145.0 174.6 167.0 155.5Lead ug/g dry wt -- NA NA NA 179.2 183.9 184.4 176.9 189.5 184.5 178.8 271.7 207.3 193.9Nickel ug/g dry wt -- NA NA NA 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- NA NA NA 211.7 193.7 171.7 240.1 195.5 177.9 186.4 228.8 213.2 206.9Zinc ug/g dry wt -- NA NA NA 1451.4 1171.1 1120.0 1569.2 1168.3 920.0 1455.0 1443.2 1335.7 1513.6

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt -- 102 0.68 3.0 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt -- NA NA NA 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt -- NA NA NA 1066.1 1220.1 913.1 937.0 994.2 467.4 551.0 678.7 454.6Copper ug/g dry wt -- NA NA NA 183.3 315.5 164.2 188.7 203.6 98.5 126.6 158.3 132.0Lead ug/g dry wt -- NA NA NA 239.2 351.5 203.3 223.8 237.7 150.9 171.5 208.4 134.5Nickel ug/g dry wt -- NA NA NA 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- NA NA NA 239.2 289.1 200.6 230.0 235.7 158.5 213.6 252.9 151.7Zinc ug/g dry wt -- NA NA NA 1585.7 2229.8 1362.8 1479.2 1570.2 604.8 682.1 867.5 1017.8Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this scenario was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceed screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Child screening levels U.S. EPA RSLs

Child U.S. EPA RSLs

Child U.S. EPA RSLs

Table 5d. Comparison of metal results in sediment to Sparrow's Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in watermen

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 92.1 43.6 0.68 3.0 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt NA NA NA NA 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt NA NA NA NA 601.2 1720.9 856.7 3649.9 2742.2 1240.3 720.3 799.8 2414.2 2957.1Copper ug/g dry wt NA NA NA NA 144.3 343.4 114.0 224.7 201.2 176.6 139.6 186.7 208.7 248.6Lead ug/g dry wt NA NA NA NA 146.5 383.7 259.4 96.8 95.4 188.8 175.4 485.0 187.4 262.5Nickel ug/g dry wt NA NA NA NA 62.4 69.2 37.1 134.7 120.7 76.1 59.3 43.5 115.8 120.7Vanadium ug/g dry wt -- NA NA NA 188.0 241.0 246.9 538.3 501.9 239.1 191.9 225.5 245.0 289.7Zinc ug/g dry wt NA NA NA NA 705.8 2000.9 986.2 1328.1 1503.8 1655.3 983.3 1378.7 2088.6 2501.2

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 92.1 43.6 0.68 3.0 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt NA NA NA NA 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt NA NA NA NA 1281.8 888.2 876.0 1153.3 853.0 547.4 944.1 956.7 906.9 987.2Copper ug/g dry wt NA NA NA NA 176.2 138.6 138.0 163.8 147.8 79.2 145.0 174.6 167.0 155.5Lead ug/g dry wt NA NA NA NA 179.2 183.9 184.4 176.9 189.5 184.5 178.8 271.7 207.3 193.9Nickel ug/g dry wt NA NA NA NA 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- NA NA NA 211.7 193.7 171.7 240.1 195.5 177.9 186.4 228.8 213.2 206.9Zinc ug/g dry wt NA NA NA NA 1451.4 1171.1 1120.0 1569.2 1168.3 920.0 1455.0 1443.2 1335.7 1513.6

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 92.1 43.6 0.68 3.0 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt NA NA NA NA 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt NA NA NA NA 1066.1 1220.1 913.1 937.0 994.2 467.4 551.0 678.7 454.6Copper ug/g dry wt NA NA NA NA 183.3 315.5 164.2 188.7 203.6 98.5 126.6 158.3 132.0Lead ug/g dry wt NA NA NA NA 239.2 351.5 203.3 223.8 237.7 150.9 171.5 208.4 134.5Nickel ug/g dry wt NA NA NA NA 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- NA NA NA 239.2 289.1 200.6 230.0 235.7 158.5 213.6 252.9 151.7Zinc ug/g dry wt NA NA NA NA 1585.7 2229.8 1362.8 1479.2 1570.2 604.8 682.1 867.5 1017.8Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceed screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Waterman screening levels U.S. EPA RSLs

Waterman U.S. EPA RSLs


Table 6a. Comparison of metal results in sediment to Sparrows Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in adults

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 3,190 2,950 NA NA 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt 7,970 7,370 7.1 98 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt 622,000 575,000 12,000 180,000 601 1721 857 3650 2742 1240 720 800 2414 2957Copper ug/g dry wt 1,270,000 1,180,000 310 4,700 144 343 114 225 201 177 140 187 209 249Lead ug/g dry wt NA NA 400 800 146 384 259 97 95 189 175 485 187 262Nickel ug/g dry wt 637,000 23,600 82 1,100 62.4 69.2 37.1 135 121 76.1 59.3 43.5 116 121Vanadium ug/g dry wt -- 147,000 39 580 188 241 247 538 502 239 192 226 245 290Zinc ug/g dry wt 9,560,000 8,840,000 2,300 35,000 706 2001 986 1328 1504 1655 983 1379 2089 2501

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 3,190 2,950 NA NA 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt 7,970 7,370 7.1 98 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt 622,000 575,000 12,000 180,000 1282 888 876 1153 853 547 944 957 907 987Copper ug/g dry wt 1,270,000 1,180,000 310 4,700 176 139 138 164 148 79 145 175 167 156Lead ug/g dry wt NA NA 400 800 179 184 184 177 190 185 179 272 207 194Nickel ug/g dry wt 637,000 23,600 82 1,100 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- 147,000 39 580 212 194 172 240 196 178 186 229 213 207Zinc ug/g dry wt 9,560,000 8,840,000 2,300 35,000 1451 1171 1120 1569 1168 920 1455 1443 1336 1514

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 3,190 2,950 NA NA 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt 7,970 7,370 7.1 98 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt 622,000 575,000 12,000 180,000 1066 1220 913 937 994 467 551 679 455Copper ug/g dry wt 1,270,000 1,180,000 310 4,700 183 315 164 189 204 98 127 158 132Lead ug/g dry wt NA NA 400 800 239 351 203 224 238 151 171 208 135Nickel ug/g dry wt 637,000 23,600 82 1,100 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- 147,000 39 580 239 289 201 230 236 159 214 253 152Zinc ug/g dry wt 9,560,000 8,840,000 2,300 35,000 1586 2230 1363 1479 1570 605 682 867 1018Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs


Adult U.S. EPA RSLs

Adult U.S. EPA RSLs

Table 6b. Comparison of metal results in sediment to Sparrow's Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in adolescents (6-16 years)

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 683 663 NA NA 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt 1,710 1,660 7.1 98 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt 133,000 129,000 12,000 180,000 601 1721 857 3650 2742 1240 720 800 2414 2957Copper ug/g dry wt 273,000 265,000 310 4,700 144 343 114 225 201 177 140 187 209 249Lead ug/g dry wt NA NA 400 800 146 384 259 97 95 189 175 485 187 262Nickel ug/g dry wt 137,000 5,310 82 1,100 62.4 69.2 37.1 135 121 76.1 59.3 43.5 116 121Vanadium ug/g dry wt -- 33,200 39 580 188 241 247 538 502 239 192 226 245 290Zinc ug/g dry wt 2,050,000 1,990,000 2,300 35,000 706 2001 986 1328 1504 1655 983 1379 2089 2501

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 683 663 NA NA 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt 1,710 1,660 7.1 98 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt 133,000 129,000 12,000 180,000 1282 888 876 1153 853 547 944 957 907 987Copper ug/g dry wt 273,000 265,000 310 4,700 176 139 138 164 148 79 145 175 167 156Lead ug/g dry wt NA NA 400 800 179 184 184 177 190 185 179 272 207 194Nickel ug/g dry wt 137,000 5,310 82 1,100 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- 33,200 39 580 212 194 172 240 196 178 186 229 213 207Zinc ug/g dry wt 2,050,000 1,990,000 2,300 35,000 1451 1171 1120 1569 1168 920 1455 1443 1336 1514

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 683 663 NA NA 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt 1,710 1,660 7.1 98 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt 133,000 129,000 12,000 180,000 1066 1220 913 937 994 467 551 679 455Copper ug/g dry wt 273,000 265,000 310 4,700 183 315 164 189 204 98 127 158 132Lead ug/g dry wt NA NA 400 800 239 351 203 224 238 151 171 208 135Nickel ug/g dry wt 137,000 5,310 82 1,100 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- 33,200 39 580 239 289 201 230 236 159 214 253 152Zinc ug/g dry wt 2,050,000 1,990,000 2,300 35,000 1586 2230 1363 1479 1570 605 682 867 1018Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs




Table 6c. Comparison of metal results in sediment to Sparrow's Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in children (< 6 years)

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt -- 392 NA NA 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt -- 980 7.1 98 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt -- 76,400 12,000 180,000 601 1721 857 3650 2742 1240 720 800 2414 2957Copper ug/g dry wt -- 157,000 310 4,700 144 343 114 225 201 177 140 187 209 249Lead ug/g dry wt -- NA 400 800 146 384 259 97 95 189 175 485 187 262Nickel ug/g dry wt -- 3,130 82 1,100 62.4 69.2 37.1 135 121 76.1 59.3 43.5 116 121Vanadium ug/g dry wt -- 19,600 39 580 188 241 247 538 502 239 192 226 245 290Zinc ug/g dry wt -- 1,180,000 2,300 35,000 706 2001 986 1328 1504 1655 983 1379 2089 2501

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt -- 392 NA NA 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt -- 980 7.1 98 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt -- 76,400 12,000 180,000 1282 888 876 1153 853 547 944 957 907 987Copper ug/g dry wt -- 157,000 310 4,700 176 139 138 164 148 79 145 175 167 156Lead ug/g dry wt -- NA 400 800 179 184 184 177 190 185 179 272 207 194Nickel ug/g dry wt -- 3,130 82 1,100 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- 19,600 39 580 212 194 172 240 196 178 186 229 213 207Zinc ug/g dry wt -- 1,180,000 2,300 35,000 1451 1171 1120 1569 1168 920 1455 1443 1336 1514

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt -- 392 NA NA 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt -- 980 7.1 98 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt -- 76,400 12,000 180,000 1066 1220 913 937 994 467 551 679 455Copper ug/g dry wt -- 157,000 310 4,700 183 315 164 189 204 98 127 158 132Lead ug/g dry wt -- NA 400 800 239 351 203 224 238 151 171 208 135Nickel ug/g dry wt -- 3,130 82 1,100 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- 19,600 39 580 239 289 201 230 236 159 214 253 152Zinc ug/g dry wt -- 1,180,000 2,300 35,000 1586 2230 1363 1479 1570 605 682 867 1018Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this scenario was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Child screening levels U.S. EPA RSLs

Child U.S. EPA RSLs

Child U.S. EPA RSLs

Table 6d. Comparison of metal results in sediment to Sparrow's Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in watermen

Sample ID A1 B1 B2 C1* C1* dup C2 C3 C4 D1* D1* dupSample No. Sparrows Pt Coke Pt Residential Industrial BC21 BC19 BC 20 BC15 BC15 dup BC16 BC17 BC18 BC11 BC11dupMoisture wet/dry 2.7 2.8 2.3 2.0 2.0 3.0 2.5 2.1 2.5 2.5Arsenic ug/g dry wt 1,480 840 NA NA 30.3 44.7 55.6 26.5 24.3 33.6 27.3 62.1 50.8 50.7Cadmium ug/g dry wt 3,700 2,100 7.1 98 4.9 13.2 2.5 5.2 4.9 6.9 5.3 4.8 9.2 9.4Chromium ug/g dry wt 289,000 164,000 12,000 180,000 601 1721 857 3650 2742 1240 720 800 2414 2957Copper ug/g dry wt 592,000 336,000 310 4,700 144 343 114 225 201 177 140 187 209 249Lead ug/g dry wt NA NA 400 800 146 384 259 97 95 189 175 485 187 262Nickel ug/g dry wt 296,000 6,720 82 1,100 62.4 69.2 37.1 135 121 76.1 59.3 43.5 116 121Vanadium ug/g dry wt -- 42,000 39 580 188 241 247 538 502 239 192 226 245 290Zinc ug/g dry wt 4,440,000 2,520,000 2,300 35,000 706 2001 986 1328 1504 1655 983 1379 2089 2501

Sample ID D2 D3 D3 dup E1* E2 E3 F1* F2 F2 dup G1Sample No. Sparrows Pt Coke Pt Residential Industrial BC12 BC13 BC13 dup BC8 BC9 BC10 BC6 BC7 BC7 dup BC3Moisture wet/dry 2.9 2.1 2.1 3.1 2.6 1.8 2.1 2.3 2.3 3.0Arsenic ug/g dry wt 1,480 840 NA NA 27.8 32.3 30.2 28.5 21.6 35.8 23.3 2.1 21.7 33.5Cadmium ug/g dry wt 3,700 2,100 7.1 98 5.5 6.6 6.3 6.6 5.0 4.1 8.3 0.1 5.0 12.7Chromium ug/g dry wt 289,000 164,000 12,000 180,000 1282 888 876 1153 853 547 944 957 907 987Copper ug/g dry wt 592,000 336,000 310 4,700 176 139 138 164 148 79 145 175 167 156Lead ug/g dry wt NA NA 400 800 179 184 184 177 190 185 179 272 207 194Nickel ug/g dry wt 296,000 6,720 82 1,100 71.9 49.4 46.3 63.1 53.4 32.6 51.2 0.2 43.1 65.6Vanadium ug/g dry wt -- 42,000 39 580 212 194 172 240 196 178 186 229 213 207Zinc ug/g dry wt 4,440,000 2,520,000 2,300 35,000 1451 1171 1120 1569 1168 920 1455 1443 1336 1514

Sample ID G2 G3 H1 H2 H2 dup BC23 BC24 BC24 dup Site 34Sample No. Sparrows Pt Coke Pt Residential Industrial BC4 BC5 BC2 BC1 BC1 dup BC23 BC24 BC24 dup Site 34Moisture wet/dry 2.3 3.7 2.4 3.0 3.0 2.2 2.3 2.3 3.1Arsenic ug/g dry wt 1,480 840 NA NA 29.5 43.6 29.4 26.4 33.9 24.7 25.7 30.9 16.9Cadmium ug/g dry wt 3,700 2,100 7.1 98 7.4 10.3 7.6 17.4 8.6 2.2 2.3 2.8 5.1Chromium ug/g dry wt 289,000 164,000 12,000 180,000 1066 1220 913 937 994 467 551 679 455Copper ug/g dry wt 592,000 336,000 310 4,700 183 315 164 189 204 98 127 158 132Lead ug/g dry wt NA NA 400 800 239 351 203 224 238 151 171 208 135Nickel ug/g dry wt 296,000 6,720 82 1,100 60.1 82.6 58.0 34.7 60.5 38.6 39.4 48.3 44.8Vanadium ug/g dry wt -- 42,000 39 580 239 289 201 230 236 159 214 253 152Zinc ug/g dry wt 4,440,000 2,520,000 2,300 35,000 1586 2230 1363 1479 1570 605 682 867 1018Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Waterman screening levels U.S. EPA RSLs



Table 7a. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in adults

Client Sample ID Sparrows Pt Coke Pt Residential Industrial BC2/H1 BC3/G1 BC4/G2 BC6/F1* BC8/E1* BC9/E2 BC11/D1* BC12/D2 BC15/C1* BC17/C3Total PCBs mg/kg dry wt -- 0.00378 -- -- 0.40 0.50 0.39 0.63 0.76 0.37 1.16 0.44 1.09 0.38

PAH CompoundsAcenaphthene mg/kg dry wt NA NA -- -- 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt NA NA -- -- 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt NA NA -- -- 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt 118 72.5 0.16 2.9 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt 118 72.5 0.16 2.9 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- NA -- -- 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt 1,180 725 1.6 29 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt 11,800 7,250 16 290 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt 11.8 7.3 0.016 0.29 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt NA NA -- -- 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt NA NA -- -- 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt 118 72.5 0.16 2.9 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt NA NA 3.8 17 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt NA NA -- -- 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt NA NA -- -- 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Adult screening U.S. EPA RSLs

Table 7b. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in adolescents (6-16 years)


PAH CompoundsAcenaphthene mg/kg dry wt NA NA -- -- 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt NA NA -- -- 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt NA NA -- -- 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt 16.8 16.3 0.16 2.9 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt 16.8 16.3 0.16 2.9 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- NA -- -- 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt 168 163 1.6 29 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt 1,680 1,630 16 290 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt 1.68 1.63 0.016 0.29 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt NA NA -- -- 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt NA NA -- -- 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt 16.8 16.3 0.16 2.9 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt NA NA 3.8 17 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt NA NA -- -- 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt NA NA -- -- 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Adolescent screening U.S. EPA RSLs

Table 7c. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in children (<6 years)


PAH CompoundsAcenaphthene mg/kg dry wt -- NA -- -- 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt -- NA -- -- 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt -- NA -- -- 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt -- 9.61 0.16 2.9 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt -- 9.61 0.16 2.9 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- NA -- -- 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt -- 96.1 1.6 29 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt -- 961 16 290 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt -- 0.961 0.016 0.29 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt -- NA -- -- 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt -- NA -- -- 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt -- 9.61 0.16 2.9 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt -- NA 3.8 17 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt -- NA -- -- 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt -- NA -- -- 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this scenario was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Child screening U.S. EPA RSLs

Table 7d. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point cancer screening levels (mg/kg) for dermal exposure in watermen


PAH CompoundsAcenaphthene mg/kg dry wt NA NA -- -- 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt NA NA -- -- 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt NA NA -- -- 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt 43.7 20.7 0.16 2.9 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt 43.7 20.7 0.16 2.9 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- NA -- -- 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt 437 207 1.6 29 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt 4,370 2,070 16 290 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt 4.37 2.07 0.016 0.29 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt NA NA -- -- 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt NA NA -- -- 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt 43.7 20.7 0.16 2.9 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt NA NA 3.8 17 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt NA NA -- -- 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt NA NA -- -- 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Watermen screening U.S. EPA RSLs

Table 8a. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in adults

Client Sample ID Sparrows Pt Coke Pt Residential Industrial BC2/H1 BC3/G1 BC4/G2 BC6/F1* BC8/E1* BC9/E2 BC11/D1* BC12/D2 BC15/C1* BC17/C3Total PCBs mg/kg dry wt -- NA -- -- 0.40 0.50 0.39 0.63 0.76 0.37 1.16 0.44 1.09 0.38

PAH CompoundsAcenaphthene mg/kg dry wt 147,000 136,000 360 4,500 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt 147,000 136,000 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt 736,000 680,000 1,800 23,000 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt NA NA 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt NA NA 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- 68,000 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt NA NA 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt NA NA 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt NA NA 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt 98,100 90,700 240 3,000 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt 98,100 90,700 240 3,000 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt NA NA 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt 49,000 45,300 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt 73,600 68,000 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt 73,600 68,000 180 2,300 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Adult screening U.S. EPA RSLs

Table 8b. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in adolescents (6-16 years)


PAH CompoundsAcenaphthene mg/kg dry wt 31,500 30,600 360 4,500 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt 31,500 30,600 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt 158,000 153,000 1,800 23,000 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt NA NA 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt NA NA 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- 15,300 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt NA NA 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt NA NA 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt NA NA 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt 21,000 20,400 240 3,000 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt 21,000 20,400 240 3,000 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt NA NA 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt 10,500 10,200 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt 15,800 15,300 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt 15,800 15,300 180 2,300 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Adolescent screening U.S. EPA RSLs

Table 8c. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in children (<6 years)


PAH CompoundsAcenaphthene mg/kg dry wt -- 18,100 360 4,500 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt -- 18,100 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt -- 90,400 1,800 23,000 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt -- NA 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt -- NA 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- 9,040 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt -- NA 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt -- NA 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt -- NA 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt -- 12,100 240 3,000 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt -- 12,100 240 3,000 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt -- NA 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt -- 6,030 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt -- 9,040 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt -- 9,040 180 2,300 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this scenario was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Child screening U.S. EPA RSLs

Table 8d. Comparison of total PCB and PAH results in sediment to Sparrows Point and Coke Point non-cancer screening levels (mg/kg) for dermal exposure in watermen


PAH CompoundsAcenaphthene mg/kg dry wt 68,300 38,800 360 4,500 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.03 0.16 0.05Acenaphthylene mg/kg dry wt 68,300 38,800 0.21 0.26 0.28 0.27 0.24 0.28 0.53 0.26 0.26 0.31Anthracene mg/kg dry wt 341,000 194,000 1,800 23,000 0.31 0.41 0.37 0.44 0.36 0.38 0.62 0.38 0.49 0.45Benzo(a)anthracene mg/kg dry wt -- NA 0.38 0.44 0.59 0.43 0.38 0.66 0.95 0.54 1.44 0.91Benzo(b)fluoranthene mg/kg dry wt -- NA 1.09 1.16 1.38 1.13 0.95 1.62 1.81 1.33 1.87 1.98Benzo(g,h,i)perylene mg/kg dry wt -- 19,400 0.50 0.48 0.59 0.42 0.36 0.71 0.73 0.50 0.54 0.80Benzo(k)fluoranthene mg/kg dry wt NA NA 0.38 0.47 0.50 0.45 0.33 0.62 0.76 0.47 0.65 0.71Chrysene mg/kg dry wt NA NA 0.50 0.62 0.71 0.54 0.50 0.86 1.18 0.65 1.68 1.10Dibenzo(a,h)anthracene mg/kg dry wt NA NA 0.11 0.11 0.13 0.09 0.09 0.16 0.15 0.13 0.19 0.19Fluoranthene mg/kg dry wt 45,500 25,800 240 3,000 0.67 0.81 0.91 0.81 0.73 0.91 2.66 0.93 2.67 1.16Fluorene mg/kg dry wt 45,500 25,800 240 3,000 0.08 0.09 0.10 0.09 0.09 0.11 0.11 0.09 0.25 0.13Indeno(1,2,3-c,d)pyrene mg/kg dry wt NA NA 0.56 0.56 0.67 0.46 0.38 0.83 0.79 0.59 0.58 0.96Naphthalene mg/kg dry wt 22,800 12,900 0.94 1.01 1.27 1.18 1.28 2.15 0.71 1.32 0.32 2.93Phenanthrene mg/kg dry wt 34,100 19,400 0.34 0.38 0.43 0.40 0.48 0.43 0.45 0.44 0.67 0.50Pyrene mg/kg dry wt 34,100 19,400 180 2,300 0.60 0.71 0.80 0.69 0.67 0.80 2.49 0.81 1.87 0.96Note:* - indicates a shallow station where direct contact with sediment may be possible.-- - this constituent was not evaluated by the assessmentNA - no screening value was providedBoxed values exceed screening levels used at Sparrow's PointShaded values exceeds screening levels used at Coke Point.Bolded values exceed EPA residential RSLsItalicized values exceed EPA industrial RSLs

Waterman screening U.S. EPA RSLs

Table 9. Exceedances of Coke Point screening levels for metals in sediment

Adult Adolescent Child Waterman Adult Adolescent Child Waterman

A1 -- -- -- -- -- -- -- --B1 -- -- -- As -- -- -- --B2 -- -- -- As -- -- -- --C1 -- -- -- -- -- -- -- --C1 dup -- -- -- -- -- -- -- --C2 -- -- -- -- -- -- -- --C3 -- -- -- -- -- -- -- --C4 -- -- -- As -- -- -- --D1 -- -- -- As -- -- -- --D1 dup -- -- -- As -- -- -- --D2 -- -- -- -- -- -- -- --D3 -- -- -- -- -- -- -- --D3 dup -- -- -- -- -- -- -- --E1 -- -- -- -- -- -- -- --E2 -- -- -- -- -- -- -- --E3 -- -- -- -- -- -- -- --F1 -- -- -- -- -- -- -- --F2 -- -- -- -- -- -- -- --F2 dup -- -- -- -- -- -- -- --G1 -- -- -- -- -- -- -- --G2 -- -- -- -- -- -- -- --G3 -- -- -- As -- -- -- --H1 -- -- -- -- -- -- -- --H2 -- -- -- -- -- -- -- --H2 dup -- -- -- -- -- -- -- --BC23 -- -- -- -- -- -- -- --BC24 -- -- -- -- -- -- -- --BC24 dup -- -- -- -- -- -- -- --Site 34 -- -- -- -- -- -- -- --Notes:

No Sparrow's Point screening levels were exceeded‐‐ - no exceedance

As - Arsenic

Cancer Screening Non-cancer ScreeningSample Location

Table 10. Exceedances of Coke Point screening levels for PCBs and PAHs in sediment

Adult Adolescent Child Waterman Adult Adolescent Child Waterman

BC15/C1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC17/C3 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC11/D1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC12/D2 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC8/E1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC9/E2 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC6/F1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC3/G1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC4/G2 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --BC2/H1 Total PCBs Total PCBs Total PCBs Total PCBs -- -- -- --

Notes:No Sparrow's Point screening levels were exceeded

-- - no exceedance

Non-cancer ScreeningCancer ScreeningSample Location

Table 11. Exceedances of U.S. EPA Regional Screening Levels for PAHs in surface water and metals, PCBs, and PAHs in sediment

U.S. EPA RSLsScreening of PAH compounds in surface water

Sample Location Tapwater MCL1 -- --2 Naph --3 B(a)P, D(a,h)A --4 B(a)P, Naph --5 -- --6 -- --7 -- --8 B(a)P, D(a,h)A --9 -- --

10 B(a)A, B(a)P, Naph --

Screening of metals in sediment

Sample Location Residential Industrial Residential IndustrialA1 As As V --B1 As As Cd, Cu, V --B2 As As V --C1 As As Ni, V --

C1 dup As As Ni, V --C2 As As V --C3 As As V --C4 As As Pb, V --D1 As As Cd, Ni, V --

D1 dup As As Cd, Ni, V, Zn --D2 As As V --D3 As As V --

D3 dup As As V --E1 As As V --E2 As As V --E3 As As V --F1 As As Cd, V --F2 As V --

F2 dup As As V --G1 As As Cd, V --G2 As As Cd, V --G3 As As Cd, Cu, Ni, V --H1 As As Cd, V --H2 As As Cd, V --

H2 dup As As Cd, V --BC23 As As V --BC24 As As V --

BC24 dup As As V --Site 34 As As V --

Cancer Screening Non-cancer Screening

Table 11. (cont.)

U.S. EPA RSLsScreening of PAH compounds in sediment

Sample Location Residential Industrial Residential IndustrialBC2/H1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC3/G1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC4/G2 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC6/F1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC8/E1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC9/E2 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --

BC11/D1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC12/D2 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC15/C1 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --BC17/C3 B(a)A, B(b)F, D(a,h)A, I(cd123)A -- -- --

Notes:-- - no exceedance

As - ArsenicB(a)A - Benzo(a)anthraceneB(a)P - Benzo(a)pyreneB(a)F - Benzo(b)fluoranthene

Cd - CadmiumCr - ChromiumCu - Copper

D(a,h)A - Dibenzo(a,h)anthracene I(cd123)A - Indeno(1,2,3-c,d)pyrene

Naph - NaphthaleneNi - Nickel

Pb - LeadV - Vanadium

Zn - Zinc

Cancer Screening Non-cancer Screening