page 1 of 9 · 2020. 5. 13. · page 1 of 9 16477953.1. 5180 soquel dr. soquel, ca 95073 . po box...
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16477953.1
5180 SOQUEL DR. SOQUEL, CA 95073 PO Box 1550 CAPITOLA, CA 95010 TEL 831-475-8500 FAX 831-475-4291 BOARD OF DIRECTORS To: Plan Holder Dr. Bruce Daniels Project: Seawater Intrusion Prevention Recharge
Wells Project President Attn: Bidder CWO: 20-3000 Rachél Lather-Hidalgo
Vice-President Date: May 13, 2020 Dr. Tom LaHue Dr. Bruce Jaffe Carla Christensen
Addendum No. 3
The contract documents for the Seawater Intrusion Prevention Recharge Wells Project have been changed. Please adjust bids accordingly. Staple this addendum to the original documents and special provisions.
BID DATE REMAINS: May 19, 2020 at 2:00 PM
Bidder acknowledges receipt of this addendum by filling out the Addendum Receipt Table provided in Document 000300.
____ ______ Soquel Creek Water District Taj Dufour, P.E. Engineering Manager/Chief Engineer
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This Addendum forms a part of the Bidding Documents and will be incorporated into Contract Documents. Insofar as the Specifications or Drawings or both are inconsistent, this Addendum governs. Acknowledge receipt of the Addendum by filling out ADDENDUM RECEIPT Table provided in Document 000300 – Bid Form. FAILURE TO DO SO WILL SUBJECT BID TO DISQUALIFICATION
For changes to contract language, strikethrough indicate existing language to be removed from contract and words in bold italics are to be inserted into contract language.
BID OPENING LOCATION
Due to the current COVID-19 Shelter-in-Place/Social Distancing requirements by the County of Santa Cruz Health Officer, the District office will remain closed. Bids will be opened at the designated time and date in the parking lot in front of the main entrance of the District office. Contractors having their bids delivered by a private mail delivery company should request they be delivered a minimum of 60 minutes prior to the bid opening and request they be delivered to the District Shipping and Delivery department in the maintenance yard. The District requests that no more than one person representing the Bidder be allowed to attend the bid opening. Personnel attending the bid opening shall wear face masks and will be required to maintain a minimum 6-foot clearance from other persons attending.
PART 1 – CHANGES/ADDITIONS TO CONTRACT DOCUMENTS
A. Table of Contents: No Change
B. Bidding and Contract Requirements: No Change
C. General Provisions:
1. Division 1, Section 01060-3.2 CONTRACTOR RESPONSIBILITIES-Add the
following language at the end of paragraph A/before paragraph B:
Monterey Avenue Coastal Commission Requirements
The following are requirements of the Coastal Development Permit. Where they
conflict with other requirements of the project, they shall take precedence over
those requirements for the Monterey Ave. Well Site portion of the project.
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The contractor shall prepare and implement a BMP plan and submit to the
District for review and approval before the project pre-construction meeting
(time TBD). The plan is subject to review and approval by the California Coastal
Commission prior to commencement of construction at the Monterey Avenue well
site.
• The plan shall clearly identify all construction BMPs to be implemented
during construction, including their location and their specific use
parameters.
• The plan shall contain provisions for specifically identifying and protecting
any natural drainage swales (i.e., with sandbag barriers, filter fabric fences,
straw bale filters, etc.) to prevent construction-related runoff and sediment
from entering into these natural drainage areas, which ultimately deposit
runoff into the Pacific Ocean.
• Silt fences, straw wattles, or equivalent measures shall be installed at the
perimeter of all construction areas.
• At a minimum, the plan shall also include provisions for stockpiling and
covering of graded materials, temporary stormwater detention facilities,
revegetation, and restricting grading and earthmoving during
rainy/inclement weather.
• The Plan shall indicate that:
a) dry cleanup methods are preferred whenever possible and that if water
cleanup is necessary, all runoff shall be collected to settle out sediments
prior to discharge from the site, and that all de-watering operations shall
include filtration mechanisms;
b) offsite equipment wash areas are preferred whenever possible; if
equipment must be washed onsite, the use of soaps, solvents, degreasers, or
steam cleaning equipment shall be prohibited; in any event, such wash
water shall be collected and appropriately disposed offsite, and shall not be
allowed to enter any natural drainage areas;
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c) concrete rinsate shall be collected and appropriately disposed offsite,
and shall not be allowed to enter any natural drainage areas;
d) good construction housekeeping shall always be required (e.g., clean up
all leaks, drips, and other spills immediately; refuel vehicles and heavy
equipment offsite and/or in one designated location; keep materials covered
and out of the rain (including covering exposed piles of soil and wastes);
dispose of all wastes properly, place trash receptacles on site for that
purpose, and cover open trash receptacles during wet weather); and
e) all erosion and sediment controls shall be in place prior to the
commencement of grading and/or construction as well as at the end of each
day. Particular care shall be exercised to prevent foreign materials from
making their way to natural drainage areas. Contractors shall insure that
work crews are carefully briefed on the importance of observing the
appropriate construction BMP precautions and reporting any accidental
spills and/or other forms of discharge.
2. Division 1, Section 01710-1.0 FINAL SITE CLEAN-UP- Add the following language
to the end of paragraph C: Crushed aggregate used to raise the grade at the
Monterey Well site shall be removed when restoring site to pre-construction
conditions.
3. Division 1, Section 01740, Warranties and Bonds. “Warranty Form”. Modify
the third paragraph by striking out language as follows:
We agree that if any of the equipment should fail due to any reason other than improper maintenance or improper operation, if any pipe or appurtenances should develop leakage, or if any settlement of fill or backfill occurs, or should any portion of the work fail to fulfill any of the requirements of the Specifications, we will, within ten days after written notice of such defects, commence to repair or replace the same together with any other work which may be damaged or displaced in so doing.
D. Exhibits: No Change
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E. Technical Specifications: No Change PART 2 - CHANGES TO DRAWINGS
1. Drawings – Sheet D-3; Demolition Plan
a. Delete and Replace with the attached revised Sheet D-3 dated 5/20 in the revision block
and with revised Demolition General Notes and Demolition Key Notes.
PART 3 – QUESTIONS RECEIVED
ALL SITES:
Q-1 TECHNICAL SPECIFICATION 2.5.3, Page 14: We have to provide an Imhoff Cone. Is there a
specific size/style of Imhoff Cone that is required?
A-1 A specific size/style is not specified for the Imhoff Cone. The Imhoff Cone should be
suitable for measurement of settleable solids.
Q-2 TECHNICAL SPECIFICATION 2.6.3, Page 16: The two sounding tubes for test pumping, will
the consultant/district be utilizing one or both of them?
A-2 Answer: Both sounding tubes will be utilized. It is anticipated one will be used for
deployment of a pressure transducer and one will be used to collect manual water level
measurements.
Q-3 Is there a minimum required flow rate per nozzle for the jetting tool?
A-3 Section 2.5.3 (pg 13, TLC site) and Section 4.13.3 (pg 42, Monterey and Willowbrook
sites) specify the jetting tool meet the following requirements:
a) Minimum of four jets equally spaced circumferentially, positioned ½ inch from the
inside of screen, and capable of producing a minimum exit velocity of 100 feet per
second from each jet.
b) Capable of being centralized within the casing
c) Capable of rotating during operation.
Q-4 Is it acceptable to use an oil lubricated vertical turbine for test pumping?
A-4 Yes, an oil lubricated turbine test pump may be used. After removal of the test pump,
the Contractor shall, in the presence of the District, remove any oil (e.g., pump lubricating oil)
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from the water surface. An acceptable method of removal shall be used, such as an oil
absorbent “sock” or similar material designed to absorb spilled oil.
TLC SITE:
Q-5 TECHNICAL SPECIFICATION 4.15.5 – Title 22 to be submitted to “Owner approved
laboratory”, can that list be provided?
A-5 Any ELAP-certified laboratory for the analyses being requested will be approved by the
District upon submittal of laboratory by the Contractor.
Q-6 Can you provide the drillers log/ well completion?
A-6 File is attached
Q-7 If filter media is to be added, will that be supplied by the owner?
A-7 Yes, the District has approximately 2,000 pounds available.
MONTEREY SITE:
Q-8 Are any permits required by contractor for the discharge line road crossing (Kennedy
Drive)?
A-8 Contractor is responsible for determining, obtaining, and complying wih any required
permits.
Q-9 What size (KVA) is the PGE transformer?
A-9 PG&E reports the nearest transformers are (3) 25 kVA. Contractor is responsible for
confirming size and location of services.
Q-10 Where is the location of the pole to be moved to?
A-10 Refer to Demolition Key Note 20 on the revised plans issued as part of Addendum 2,
“Coordinate field location with Owner and PG&E.” The location shown on the plans is in the
lower right (southwest) corner of the site, however, this location is subject to change pending
coordination with PG&E. The location must remain within the site boundaries and is more
than likely to be located somewhere near the southern boundary of the site.
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ADDITIONAL QUESTIONS:
Q-11 If DG (decomposed granite) material is brought into the site for leveling/weather proofing,
can it stay on the sites or does it need to be hauled off?
A-11 The imported material shall be removed from the site. See revisions to Division 1,
Section 01710-1.0 FINAL SITE CLEAN-UP above and revised sheet D-3 issued with this
addendum.
Q-12 Can you provided detailed instructions from the engineers that investigated the
underground cement tank at the Monterey site, on how it is recommended to stabilize the tank so
that a drilling rig can be stood up on top of it (2 out riggers will be on it)
A-12 Contractor shall refer to “Appendix C, Section 02 01 20 Paragraph 3.7 Protection of
Existing Washwater Basin” and recent revisions to this section captured under Addendum 2
including “Appendix C-4 Monterey Tank Roof Capacity Analysis.” These sections contain
general criteria for protection of the existing washwater tank, however, the Contractor is
ultimately responsible for the design and implementation of the protective measures. Section
02 01 20 Paragraph 3.7 D. requires the Contractor to prepare Protection and Shoring Plan “if
site activities exceed the permitted capacity stated herein. The shoring system shall be
designed by a civil engineer, registered in the State of California with 5-years of similar design
experience.” The paragraph continues with minimum criteria for such shoring system.
Q-13 If the cement tank is damaged, will the contractor be responsible for repairing/replacing? If
so, what is the value of the underground tank to replace and install?
A-13 Contractor shall refer to Section 02 01 20 Paragraph 3.7 A. “Contractor is responsible
for protection of the existing wash water tank. Any damage to the structure incurred during
implementation of this contract shall require full replacement of an equivalent tank at no
additional cost to the Owner.” The present value of the tank is undetermined at this time.
Q-14 What is the well design wait time for the two drilling projects after the Elog is provided to
the consultant?
A-14 District will provide the final well design(s) within 72 hours after receipt of electronic
geophysical results, sieve analysis data (if completed), and any other relevant data.
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Q-15 Can the drillers log (formations anticipated) be supplied for the current Monterey Well?
A-15 No. There is no driller’s log of the original Monterey well construction.
Q-16 What is the static water level at the Monterey and Willowbrook Well Sites?
A-16 The anticipated approximate static water level is 100.5 feet below ground surface at
the Monterey site and 110-feet below ground surface at the Willowbrook site.
Q-17 At the Willowbrook Site, what does the customer want to do with the sound wall and tree
(on the property line) that is on the fence line? It was discussed on the site walk that the tree be
removed, sound wall height be reduced, etc.
A-17 Contractor is permitted to trim the tree for installation of sound walls if needed to
configure sound walls for site set-up Tree work shall be completed by a licensed tree company,
having a licensed arborist on staff and overseeing the work.
Q-18 In reference to the Warranty Form 01740-3, how will the District determine that any
settlement, fill or backfill, has occurred within two years of completion as a result of the work from
other contractors vs the contractor awarded to this contract?
A-18 See revision to Division 1, Section 01740, Warranties and Bonds. “Warranty Form”
above. This requirement was removed.
Q-19 How high are the power lines at the Willowbrook Site?
A-19 This information is unknown and was not captured in recent surveys performed by the
District. Per Section 02 01 20 Contractor is responsible for visually identifying and locating all
onsite utilities and performing a thorough pre-construction site conditions survey. Contractor
shall be responsible for protection of all existing utilities.
Q-20 Can baker tanks be staged on the road (along curb) at the Willowbrook site?
A-20 Contractor is advised to discuss use of Willowbrook Lane with the County of Santa Cruz
Public Works Department, Encroachment. District has no authority to approve the use of
Willowbrook Lane for construction staging.
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Q-21 At the Willowbrook and Monterey Sites, who is responsible for replacing the fence at the
front of the sites (since the fences will need to be removed for access)?
A-21 The fence at the Willowbrook site does not need to be replaced. The Contractor will be
responsible for replacing the fence at the front of the Monterey site.
ATTACHMENTS:
• Twin Lakes Church Injection Well DWR Report
• Sheet D-3; Demolition Plan, Revised 5/20 for Addendum 3
PREPARED BY: Michael Wilson, Associate Engineer Soquel Creek Water District (831) 475-8501 ext 122 [email protected]
State of California
Well Completion ReportForm DWR 188 Submitted 9/10/2019
WCR2019-012834
Owner's Well Number Date Work Began Twin Lakes Church Inject. Well 01/30/2019 Date Work Ended 06/12/2019
Local Permit Agency Environmental Health Services of Santa Cruz County
Secondary Permit Agency Permit Number 18-088 Permit Date 12/31/2018
Well Location
2701 Cabrillo College DR Address
Aptos City 95003Zip Santa CruzCounty
36 Latitude 59 3.98
Deg. Min. Sec.
N -121Longitude 55 39.29
Deg. Min. Sec.
W
Dec. Lat. 36.9844389 Dec. Long. -121.9275806
Vertical Datum NAVD88 Horizontal Datum WGS84
Location Accuracy Unknown Location Determination Method Unknown
037-251-19APN
11 STownship
01 WRange
12Section
Mount DiabloBaseline Meridian
130Ground Surface Elevation
1 FtElevation Accuracy
SurveyedElevation Determination Method
Geologic Log - Free FormDepth from
SurfaceFeet to Feet
Description
0 15 Soil
15 25 Sand and gravel
25 34 Sand
34 42 Sand and minor gravel
42 51 Blue sandy clay
51 180 Sandy clay
180 210 Fine sand
210 430 Sandy clay
430 520 Clay
520 635 Sandy clay
635 650 Clay
650 805 Sand and sandstone streaks
805 835 Clayey sand
835 930 Sandy clay
Well Owner (must remain confidential pursuant to Water Code 13752) SOQUEL CREEK WATER DISTRICT, Michael Wilson Name
Mailing Address 5180 Soquel Drive
Soquel City CAState 95073Zip
Planned Use and Activity
Planned Use
Activity
Injection
New Well
Borehole Information
Drilling Method
Orientation
Total Depth of Boring 1020
Reverse Circulation
Vertical
860 Total Depth of Completed Well
Drilling Fluid Polymer
Feet
Feet
Specify
Water Level and Yield of Completed Well Depth to first water
Depth to Static
111.60Water Level
880Estimated Yield*
24Test Length
*May not be representative of a well's long term yield.
(Feet below surface)
(Feet)
(GPM)
(Hours)
Date Measured 05/06/2019
PumpTest Type
Total Drawdown 68 (feet)
Page 1 of 3 Form DWR 188 rev. 12/19/2017
930 955 Clayey sand
955 960 Sandstone
960 998 Sandy clay
998 1020 Blue sandy clay
Other Observations:
Casings
Casing #
Depth from SurfaceFeet to Feet Casing Type Material Casings Specificatons
Wall Thickness
(inches)
OutsideDiameter(inches)
ScreenType
Slot Size if any
(inches)Description
1 0 50 Conductor or Fill Pipe
Mild Steel N/A 0.375 34.75 A-139
2 0 220 Blank Spiral Weld Stainless
Steel
Nominal Size: 16 in. | Thickness: 5/16 in. | OD: 16-5/8 in.
0.3125 16.625 A-778 Roscoe Moss
2 220 415 Screen Spiral Weld Stainless
Steel
Nominal Size: 16 in. | Thickness: 5/16 in. | OD: 16-5/8 in.
0.3125 16.625 Wire Wrap
0.06 Roscoe Moss
2 415 565 Blank Spiral Weld Stainless
Steel
Nominal Size: 16 in. | Thickness: 5/16 in. | OD: 16-5/8 in.
0.3125 16.625 A-778 Roscoe Moss
2 565 840 Screen Spiral Weld Stainless
Steel
Nominal Size: 16 in. | Thickness: 5/16 in. | OD: 16-5/8 in.
0.3125 16.625 Wire Wrap
0.06 Roscoe Moss
2 840 860 Blank Spiral Weld Stainless
Steel
Nominal Size: 16 in. | Thickness: 5/16 in. | OD: 16-5/8 in.
0.3125 16.625 A-778 Roscoe Moss
Annular Material
Depth from Surface
Feet to FeetFill Fill Type Details Filter Pack Size Description
0 180 Cement 10.3 Sack Mix
180 190 Bentonite High Solids Baroid 3/8-inch chip Hole Plug
190 435 Filter Pack Other Gravel Pack 1.70-2.50mm Sigmund Lindner Glass Beads
435 470 Bentonite High Solids 3/8-inch Baroid Hole Plug
470 850 Filter Pack Other Gravel Pack 1.70-2.50 mm Sigmund Lindner Glass Beads
850 880 Filter Pack 8 x 16 8x16 SRI
880 930 Other Fill See description. Slough/native fill
930 970 Cement 10.3 Sack Mix
970 1020 Other Fill See description. Slough/native fill
Page 2 of 3 Form DWR 188 rev. 12/19/2017
Certification StatementI, the undersigned, certify that this report is complete and accurate to the best of my knowledge and belief
Name MAGGIORA BROS DRILLING INC
Person, Firm or Corporation
595 AIRPORT BLVD WATSONVILLE 95076CA
Address City State Zip
Signed electronic signature receivedC-57 Licensed Water Well Contractor
09/10/2019
Date Signed
249957
C-57 License Number
DWR Use OnlyCSG # State Well Number Site Code Local Well Number
N
Latitude Deg/Min/Sec Longitude Deg/Min/Sec
TRS:
APN:
W
Borehole Specifications
Depth from Surface
Feet to FeetBorehole Diameter (inches)
0 50 42
50 220 30
220 880 26
880 1020 18
Page 3 of 3 Form DWR 188 rev. 12/19/2017
PROTECTION AND DEMOLITION PLAN
MONTEREY WELL SITE
A B C D E F G H
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