AMD04_W9126G21R0004_LDSM_22Sep2021.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The Solicitation for Lewisville Dam Safety Modification (LDSM), Dallas, TX is amended as follows:

See SF30 Continuation Sheet(s)

1. CONTRACT ID CODE PAGE OF PAGES

1 6

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W9126G21R0004

X 9B. DATED (SEE ITEM 11)

02-Aug-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

A0004

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

22-Sep-2021

CODE

US ARMY CORPS OF ENGINEERS FORT WORTH

819 TAYLOR ST, CT OFC RM 2A17

FORT WORTH TX 76102-0300

W9126G 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

20B. SIGNATURE

(REV. 4-85)STANDARD FORM 1442 BACK

TO SIGN

NSN 7540-01-155-3212

SOLICITATION, OFFER, AND AWARD (Continued) (Construction, Alteration, or Repair)

CODE FACILITY CODE

17. The offeror agrees to perform the w ork required at the prices specif ied below in strict accordance w ith the terms of this solicitation, if this offer is accepted by the Government in w riting w ithin ________ calendar days after the date offers are due.

the minimum requirements stated in Item 13D. Failure to insert any number means the offeror accepts the minimum in Item 13D.)

AMOUNTS SEE SCHEDULE OF PRICES

18. The offeror agrees to furnish any required performance and payment bonds.

19. ACKNOWLEDGMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments to the solicitation -- give number and date of each)

AMENDMENT NO.

DATE

20A. NAME AND TITLE OF PERSON AUTHORIZED TO SIGN

OFFER (Type or print)

AWARD (To be completed by Government)

21. ITEMS ACCEPTED:

22. AMOUNT 23. ACCOUNTING AND APPROPRIATION DATA

24. SUBMIT INVOICES TO ADDRESS SHOWN IN ITEM

(4 copies unless otherwise specified)

CODE

(Insert any number equal to or greater than

20C. OFFER DATE

25. OTHER THAN FULL AND OPEN COMPETITION PURSUANT TO

10 U.S.C. 2304(c) 41 U.S.C. 253(c)

CODE27. PAYMENT WILL BE MADE BY:26. ADMINISTERED BY

(Include ZIP Code)14. NAME AND ADDRESS OF OFFEROR 15. TELEPHONE NO. (Include area code)

See Item 14

(Include only if different than Item 14)16. REMITTANCE ADDRESS

30B. SIGNATURE

29. AWARD (Contractor is not required to sign this document.)

document and return _______ copies to issuing office.) Contractor agrees Your of f er on this solicitation, is hereby accepted as to the items listed. This award con-to f urnish and deliv er all items or perf orm all work, requisitions identif ied summates the contract, which consists of (a) the Gov ernment solicitation and on this f orm and any continuation sheets f or the consideration stated in this y our of f er, and (b) this contract award. No f urther contractual document is contract. The rights and obligations of the parties to this contract shall be necessary .

gov erned by (a) this contract award, (b) the solicitation, and (c) the clauses, representations, certif ications, and specif ications or incorporated by ref er-ence in or attached to this contract.

30A. NAME AND TITLE OF CONTRACTOR OR PERSON AUTHORIZED 31A. NAME OF CONTRACTING OFFICER (Type or print)

30C. DATE

(Type or print)

TEL: EMAIL:

31B. UNITED STATES OF AMERICA 31C. AWARD DATE

BY

CONTRACTING OFFICER WILL COMPLETE ITEM 28 OR 29 AS APPLICABLE

(Contractor is required to sign this28. NEGOTIATED AGREEMENT

(M ust be fully completed by offeror)OFFER

W9126G21R0004

SECTION SF30 - CONTINUATION PAGE

SUMMARY OF CHANGES

The following have been modified:

SECTION 00 21 00 - INSTRUCTIONS, CONDITIONS AND NOTICES TO OFFERORS

DIVISION 01 – SPECIFICATIONS

SECTION 01 00 00.00 44

SECTION 31 63 29

SECTION 31 68 13

LD21DM CL – 102.A01

LD21DM CL – 103.A01

LD21DM SB – 543.A01

LD21DM SB – 561.A01

(End of Summary of Changes)

<AMENDMENT 0004>

INSTRUCTIONS, CONDITIONS, AND NOTICES TO OFFERORS

1.0 GENERAL INFORMATION

1.1 GENERAL DESCRIPTION OF WORK

<AMD04>NOTE: General Description DOES NOT SUPERSEDE Specifications or Drawings </AMD04>

The scope of the project includes all work required for construction to make necessary repairs to Lewisville Dam, Lewisville, Texas. The measures to address the structural stability concerns associated with PFM 6 consist of post-tensioned anchors installed through the ogee weir, and an upstream geomembrane blanket. An anchor field testing program to gather foundation information to verify the anchoring capacity assumptions of the Eagle Ford shale foundation is complete with the relevant data and reports included in the Design Documentation Report and Geotechnical Data Report. A work platform will be required to install the anchors along the downstream slope of the monoliths.

Install 73 post-tensioned strand anchors on the spillway. The anchors will be founded approximately 130 feet below the spillway weir foundation. <AMD04> All anchors will be installed and tensioned before performing any demolition on apron slabs </AMD04>. Install permanent load cells on one anchor per monolith. Install cable through trench cut into weir to right abutment, up the abutment to a terminal box at the top of the abutment for monitoring.

Test anchors as specified and per the PTI.

The upstream geomembrane blanket will be installed in the approach channel of the spillway below the current grade and attached to the ogee monoliths. A cofferdam will be required across the approach channel for the installation of the membrane. The approach channel has a relatively flat slope in the area and a water depth of 2 to 3 feet at conservation pool elevation.

The apron slab overlay will cover the existing apron slabs to address uplift and sliding concerns associated with PFM 7. The overlay slab joints will be positioned so they will be offset from the existing slab joints. The joints between the overlay slabs will be doweled and include a water stop. Each overlay slab will have anchors installed;

the number of anchors varies depending on the distance from the ogee weir. The apron slabs will be thickened in the area around the anchors to prevent pullout. A drainage layer will be included between the two slabs. Maintaining a consistent moisture content is necessary to reduce the shrinking and swelling of the foundation which led to the heave in the existing apron slabs. Some existing heaved apron slabs will be removed and replaced prior to placing the drainage system and overlay.

The existing apron slab extension will be demolished and replaced with a system of two drilled pier walls reinforced with heavy structural steel sections and connected across the top with cap beams. The downstream wall will be buried deep to prevent headcutting scour from undermining the apron slab. The upstream wall will be used as an anchor to brace the downstream wall from downstream deflections. The walls are tied with a new apron slab reinforced for tension.

Training walls were evaluated for stability and potential for overtopping during extreme flood events. Construct concrete extensions on top of the existing training walls. Reinforcement will be epoxy anchored into the top of the walls. Remove backfill from behind the walls and install new drainage piping. Place vertical butyl rubber joint seals extending from top of footing to 1’ above backfill on the soil side of the walls. Install new drainage and backfill.

Contractor must keep enough stockpile on site to backfill the walls should a flow event exceeding 5’ of flow in the apron occur. Offsets in the training wall joints on the spillway sides will be ground smooth to minimize potential for cavitation and stagnation pressures. One monolith stem wall will be removed and replaced.

Non-Overflow monoliths left and right of the spillway will have backfill stabilized with lime to reduce likelihood of slides. Instrumentation to monitor structural behavior will include load cells in the post-tensioned anchors and uplift cells in the apron slab drainage fill.

m2ct9cg9 Cross-Out

1.2 GOVERNMENT REQUIREMENTS FOR INCOMING MAIL AND PACKAGES

The Offeror(s) must ensure that ALL mail inquiries are sent to the Fort Worth District, U.S. Army Corps of Engineers, relating to either pre-contract or post-contract award. A return mailing address is required on the outside of the envelope, package, box, etc. All mail must be addressed to the Contracting office as specified below (no exceptions):

U.S. Army Engineer District, Fort Worth District ATTN: CESWF-CT, Clyde Gardner, Contract Specialist, 819 Taylor Street (Room2A17) Fort Worth, TX, 76102-0300

All Federal Express/UPS/etc. packages are required to have Offeror’s physical address and the above contracting office address including room number, contract specialist’s name and telephone number for proper delivery.

1.3 COPIES OF SOLICITATION DOCUMENTS AND AMENDMENTS

Copies of the solicitation and all amendments are available by INTERNET ACCESS ONLY.

All solicitation documents and amendments will be posted on the SAM.gov website at https://sam.gov and Offeror can access solicitation documents by solicitation number without dashes – W9126G21R0004

It is solely the Contractor’s responsibility to check the SAM.gov website for the solicitation and any amendments prior to the RFP closing date. The Offeror shall submit in its proposal all requested information as specified in this solicitation. There will be no public opening of the proposals received as a result of this solicitation.

Additional information regarding this solicitation and potential Offerors (i.e., interested vendors list) and/or subcontractors will be available on the SAM.gov website under the solicitation number.

1.4 OFFEROR'S QUESTIONS AND COMMENTS

Questions and/or comments relative to these documents should be submitted via e-mail to:

Contract Specialist – Primary POC U.S. Army Corps of Engineers, Fort Worth District ATTN: Clyde Gardner Phone: (817) 886-1211 Email: clyde.l.gardner@usace.army.mil

Technical inquiries and questions relating to proposal procedures or bonds are to be submitted via:

Bidder Inquiry in ProjNet at https://www.projnet.org/projnet

To submit and review bid inquiry items, bidders will need to be a current registered user or self-register into system. To self-register go to web page, click BID tab select Bidder Inquiry, select agency USACE, enter Key for this solicitation listed below, and your e-mail address, click login. Fill in all required information and click create user. Verify that information on next screen is correct and click to continue.

From this page you may view all bidder inquiries or add inquiry. Only one question will be allowed per inquiry. If multiple questions are included in a single inquiry, only the first question will be answered. All others will remain unanswered until entered in as single inquiries.

Bidders will receive an acknowledgement of their question via email, followed by an answer to their question after it has been processed by our technical team.

The Solicitation Number is: W9126G21R0004

The Bidder Inquiry Key is: VCNK6Y-4B44G4

The Bidder Inquiry System will be closed to new inquiries seven (7) calendar days prior to proposal submission in order to ensure adequate time is allotted to form an appropriate response and amend the solicitation, if necessary. If the System is not closed in a timely manner, an inquiry posted within the seven calendar days of the receipt of proposals would still be considered untimely and will not be answered.

Offerors are requested to review the specification in its entirety, review the Bidder Inquiry System for answers to questions prior to submission of a new inquiry.

The call center operates weekdays from 8am to 5pm U.S. Central Time Zone (Chicago). The telephone number for the Call Center is 800-428-HELP.

Offers will NOT be publicly opened. Information concerning the status of the evaluation and/or award will NOT be available after receipt of proposals.

Oral explanations or instructions are not binding. Any information given to the offeror which impacts the solicitation and/or offer will be given in the form of a written amendment to the solicitation.

1.5 SMALL BUSINESS SIZE STANDARD/NAICS CODE

See Section 00 45 00, FAR 52.204-8 for the small business size standard/NAICS Code.

1.6 PROPOSAL EXPENSES AND PRE-CONTRACT COSTS

This Request for Proposal (RFP) does not commit the Government to pay as a direct charge any costs incurred by the Offeror in the preparation and submission of its proposal or revisions.

1.7 PRE-PROPOSAL CONFERENCE/SITE VISIT

See clause 52.236-27 for site visit information.

1.8 ACCURACY IN PROPOSALS

Proposals must set forth with full, accurate, and complete information as required by this RFP, (including attachments). The penalty for making false statements is prescribed in 18 U.S.C. 1001.

1.9 PROPOSAL SUBMITTALS

A. Proposal Submission

1. Introduction. To assure timely and equitable evaluation of proposals, Offerors must follow the instructions contained herein. Offerors are required to meet all solicitation requirements, including terms and conditions, representations and certifications, and technical requirements, in addition to those identified as evaluation factors. The Offeror shall submit in the proposal all requested information specified in this section of the Request for Proposal (RFP) solicitation at or before the exact time specified. There will be no public opening of the proposals received as a result of this RFP. Failure to meet a requirement may result in an offer being ineligible for award. Copies of the RFP are available by INTERNET ACCESS ONLY. All RFP documents will made available for viewing at the SAM.gov website (https://sam.gov). All amendments will be made available for viewing in SAM.gov. It shall be the Offeror’s responsibility to check the website for any amendments.

2. General Proposal Submission Requirements.

a. Electronic Proposals. In an effort to reduce paperwork and costs, ALL RESPONSES TO THIS ANNOUNCEMENT SHALL BE SUBMITTED ELECTRONICALLY. Hand carried delivery or USPS/UPS/FedEx delivery of hard copies and/or CD-ROMs are not authorized. Facsimile submission is not authorized. Email submission is authorized.

b. Submit the Price and Technical proposals electronically via the DoD SAFE website at https://safe.apps.mil/.

In order for an outside user (the contractor) to submit a proposal for the solicitation, they must receive a drop-off request from an inside user (the government). When the inside user generates a drop-off request for you, you will receive an email with a link to submit your drop-off. Optionally, the Government may provide you with a request code. In that case, click the Drop-off button on the SAFE home page and enter the Request code.

To request and receive a drop-off request for this solicitation, email the Contract Specialist and Contracting Officer two (2) working days before the proposal due date.

The Contracting Officer for this project is: Mr. Carl S. Oelschig. Email address is carl.s.oelschig@usace.army.mil. The Contract Specialist for this project is: Clyde Gardner. Email address is clyde.l.gardner@usace.army.mil. Include the solicitation number in your Email Subject Line:

c. File Names. To ensure your submission is received and processed appropriately, it is important that interested parties CAREFULLY ensure their electronic files adhere to the following naming convention: (I) Technical Proposal and (II) Price Proposal each filename shall begin with the solicitation number, followed by the word “TECHNICAL” or “PRICE” followed by your firm’s name, and finally a brief file description:

(W9126G21R0004_TECHNICAL_FIRM NAME_LDSM SPILLWAY).

(W9126G21R0004_PRICE_FIRM NAME_LDSM SPILLWAY)

d. File Organization, Formatting, and other instructions. Although hard copies are not accepted, each file shall be clearly indexed, and logically assembled in accordance with Proposal Submission, Paragraph 6(C)(1)(a) of the RFP. Pages shall be letter sized except for those noted in Paragraph 6(C)(1)(a). Offerors shall prepare proposals in the English language. Proposals shall be in a narrative format, organized and titled so that each section of the proposal follows the order and format of the factors. Information presented should be organized so as to pertain to only the evaluation factor in the section that the information is presented. Information pertaining to more than one evaluation factor should be repeated in each section for each factor. Electronic files shall be Microsoft Windows compatible. Files shall be submitted in their native format (i.e. doc, xls, ppt, etc.), or if in pdf format, shall be in searchable text. If the electronic files are of a size at which they must be compressed (zipped), they shall be compressed into one zipped folder.

e. Upload Completion & Deadline. Interested parties shall submit responses no later than the date specified on solicitation document. The time & date of proposal receipt will be the upload completion / delivery time & date recorded within SAFE. Do not assume that electronic submission will occur instantaneously. Large files (e.g. 10MB or more) will take some time to upload. Offerors should time their upload effort with prudence by not waiting until the last few minutes—this will allow for unexpected delays in the transmittal process and troubleshooting. Submissions may be emailed to Clyde Gardner, Contract Specialist, clyde.l.gardner@usace.army.mil.

1.10 JOINT VENTURE PROPOSAL REQUIREMENTS

When proposing as a joint venture, all members of the joint venture shall sign the SF 1442 and the bid bond unless a written agreement by the joint venture is furnished with the proposal designating one firm with the authority to bind the other member(s) of the joint venture. In addition, a copy of the joint venture agreement shall be submitted with the proposal. Failure to comply with the foregoing requirements may eliminate the proposal from further consideration. If this is an 8(a) or HubZone joint venture, the Offeror shall ensure that it complies with the applicable requirements of 13 CFR Part 124 and 13 CFR Part 126, respectively.

1.11 BID GUARANTEE

Reference the provision 52.228-1, Bid Guarantee. Facsimile Bonds are not acceptable.

Dam Safety Modification - Spillway Solicitation No. W912G21R0004

SECTION 01 00 00.00 44

SCHEDULE REQUIREMENTS AND RESTRICTIONS

10/2015

<AMENDMENT 0004>

PART 1 GENERAL

1.1 SCHEDULE

Commence, prosecute, and complete the work under this contract in accordance with the following schedule and Section 00 73 00 CONTRACT CLAUSES COMMENCEMENT, PROSECUTION AND COMPLETION OF WORK and LIQUIDATED

DAMAGES:

Item of Work Commencement of Work

(Calendar days)

Completion of Work

(Calendar days)

Liquidated Damages per

Calendar days

(1) Completion of all construction work Establishment of Turf and Landscaping

10 Calendar days upon receipt of Notice to Proceed

1,258 $ 6,816

(2) Final Record Drawings

*** *** None

NOTE: All work on this project must be completed within the number of calendar days stated in Item of Work (1) above, inclusive of all review periods and Government phasing requirements specified. If the Government accepts a proposal for a completion period of lesser duration, and such proposal alters the time periods for review and phasing, the Contract must be read to include the original periods for review and phasing. If a completion period of lesser duration is proposed and accepted by the Government, the accepted completion period will replace the original construction schedule listed above in the Schedule. If an alternate completion period is proposed, the Bid Schedule must reflect pricing information for the alternate proposed completion period. The liquidated damages stated above will be applied for each calendar day the Contractor exceeds the Contract scheduled duration.

a. Liquidated damages for individual items of work will not be combined.

Only the rate of the affected item of work will be assessed.

b. Liquidated damages are not accumulative for multiple phases of work.

SECTION 01 00 00.00 44 Page 1 Accomanying Amendment 0004 to Solicitation No. W9126G21R0004

*** Record Drawings: See Section 01 78 00 CLOSEOUT SUBMITTALS, paragraph titled RECORD DRAWINGS for requirements and withholding amount to ensure completion of record drawings.

1.2 TIME EXTENSIONS FOR UNUSUALLY SEVERE WEATHER (OCT 1989) (ER

415-1-15)(52.0001-4038 1/96)

a. This provision specifies the procedure for determination of time extensions for unusually severe weather in accordance with the contract clause FAR 52.249-10 entitled "DEFAULT: (FIXED PRICE CONSTRUCTION)." In order for the Contracting Officer to award a time extension under this clause, the following conditions must be satisfied:

(1) The weather experienced at the project site during the contract period must be found to be unusually severe, that is, more severe than the adverse weather anticipated for the project location during any given month.

(2) The unusually severe weather must actually cause a delay to the completion of the project. The delay must be beyond the control and without the fault or negligence of the Contractor.

b. The following schedule of monthly anticipated adverse weather delays due to precipitation and temperature is based on National Oceanic and Atmospheric Administration (NOAA) or similar data for the project location and will constitute the base line for monthly weather time evaluations. The Contractor's progress schedule must reflect these anticipated adverse weather delays in all weather dependent activities. Wind is not considered in the Monthly Anticipated Adverse Weather Calendar Day Schedule.

DALLAS/FT. WORTH, TX AREA-NORTH AREA-NORTH OF I-20 AND EAST OF I-35E; ALSO

WEST OF I-35 & WITHIN 80-MILE RADIUS (LEWISVILLE, RAY ROBERTS, AND LAVON

RESV.) CARSWELL AFB, BENBROOK & GRAPEVINE LAKES & RESERVE CTRS) (DFW)

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

3 4 4 3 4 4 3 2 4 3 4 4

c. Upon receipt of the Notice to Proceed (NTP) and continuing throughout the contract, the Contractor will record on the daily CQC report, the occurrence of adverse weather and resultant impact to normally scheduled work. Actual adverse weather delay days must prevent work on critical activities for 50 percent or more of the Contractor's scheduled work day.

d. The number of actual adverse weather delay days must include days impacted by actual adverse weather (even if adverse weather occurred in previous month), be calculated chronologically from the first to the last day of each month, and be recorded as full days. If the number of actual adverse weather delay days exceeds the number of days anticipated in paragraph "b", above, the Contracting Officer will convert any qualifying delays to calendar days, giving full consideration for equivalent fair weather work days, and issue a modification in accordance with the contract clause entitled "Default (Fixed Price Construction)."

SECTION 01 00 00.00 44 Page 2

1.3 WORK RESTRICTIONS

The following restrictions are not all inclusive. All other requirements in the plans and specifications must be met.

1.3.1 Sequence of Work Restrictions:

a. Install, test, lock-off, and complete all weir anchors prior to all other work related to the spillway including new apron overlay work, turndown wall system, upstream cofferdam, and geomembrane installation. Work that may be performed during the installation of the weir anchors include work on haul roads, excavation behind training walls, removal and replacement of existing apron slabs except the three columns of slabs near the spillway centerline, removal and replacement of training wall section, backfill of training walls, and extension of training walls.

(1) The Contractor will only be allowed to install, test, and lock-off weir anchors on four monoliths at the same time starting at one end of the spillway and working toward the other end. Complete the anchor within 7 days from the time the anchor bond zone is grouted. This includes the final concrete placement in the recess. The anchor must be grouted in the bond zone within 24 hours of the start of the drilling of the underream. Weir anchors must be installed and tensioned in the sequence shown on drawings.

b. Existing apron slabs adjacent to the training walls must not be removed until the training wall backfill is removed.

(1) Protect the foundation of the demolished apron slabs from water.

Do not remove any additional slabs if rain is forecast within 24 hours.

(2) Demolished apron slabs must be replaced with concrete within 24 hours of removal.

c. Only after weir anchors are installed and accepted can all other work proceed. Do not begin any other work on the apron such as the apron rock dowels, cement stabilized open graded drainage layer, and new apron concrete overlay until the apron weir transition modifications are constructed as shown on drawing SB-341.

(1) The collection trench must be constructed from downstream to upstream and completed prior to construction of the drainage trench at the toe of the transition section.

(2) The collection and drainage trenches must be installed and finished in segments not to exceed 60 feet in length.

(3) Do not begin any other work on the apron including apron slab replacements for the three column of slabs near the spillway centerline, the apron rock dowels, cement stabilized open graded drainage layer, trench drain, and new apron concrete overlay until the apron weir transition modifications are constructed as shown on drawing SB-341.

d. Construction of the apron rock dowels, cement stabilized open graded drainage layer, and apron overlay slabs must begin after completion of the apron weir transition modifications and transition drainage

SECTION 01 00 00.00 44 Page 3 trench.

(1) Apron overlay slabs must be installed in a checkerboard pattern in rows across the spillway with no more than two rows being installed at a time.

(2) Slabs must be cured a minimum of 7 days before placing adjacent slabs.

(3) Apron overlay slabs must be placed in rows from upstream to downstream.

(4) The cement stabilized open graded drainage layer must be protected from contamination during other work activities including the drilling and installation of the apron rock dowels.

e. Turndown wall apron slab, drilled piers, and cap beam construction restrictions.

(1) Do not excavate a shaft within 5 shaft diameters from the edge of an open shaft excavation or one in which concrete in closest adjacent shaft within 3 shaft diameters from the edge has been placed in the preceeding 48 hours.

(2) A drilled pier must be complete with soldier pile and concrete placed within 48 hours of drilling commencement and no more than 4 hours following excavation to the bottom depth.

(3) Construct the technique drilled pier before constructing all other drilled piers.

(4) The existing apron extension slab is to remain in place during drilled pier installation to serve as a work platform. <AMD04> The turndown portions of the existing apron extension slab may be removed before drilled pier installation.</AMD04>

(5) Turndown wall apron slab and drilled pier cap beams must be constructed in an alternating pattern. Adjacent concrete placements must not be made until all three of the following criteria are met:

(a) The hottest portion of the concrete has cooled by 5 degrees F from its maximum temperature.

(b) The hottest portion of the concrete has cooled to within 35 degrees F of the average outside temperature.

(c) The concrete has been allowed to cure for 7 days.

(6) Backfill behind the training walls must be removed before demolishing and removing the existing apron extension.

f. Test sections for features of work such as apron slabs, weir anchor test holes, apron rock dowels, and drilled shafts must be completed and accepted prior to the beginning of production.

g. Fish Hatchery Road Pre-Fabricated Air Bridge Inspection Schedule

(1) Perform inspection of the Pre-Fabricated Air Bridge by the manufacturer at beginning of construction and at the end of

SECTION 01 00 00.00 44 Page 4 construction activities.

(2) At quarterly (once per each three calendar months) intervals the Government will perform a comprehensive bridge inspection on the Pre-Fabricated Air Bridge.

(3) An initial seven-day (7 calendar days) advanced notification will be provided through the Contracting Officer. An additional twenty-four (24) hour advanced notification will be provided prior to arrival.

(4) Government inspections will take up to eight (8) business hours.

(5) Inspectors will minimize impacts to hauling to the maximum extent possible, but impacts to at least one lane of the bridge are likely throughout the duration of this inspection period.

(6) Provide traffic control to ensure safety of Government inspectors during inspection periods.

h. Borrow area grading, borrow area haul road restoration, and initial turf establishment procedures must be completed by March 31, 2025 to permit Government-performed adaptive management procedures to commence. Final turf establishment is not required to be accomplished prior to this date. Sequence construction operations to complete these requirements prior to this date. Material permitted for disposal in the borrow area must be completed prior to this date.

After March 31, 2025, disposal must be accomplished off-site at an approved location.

1.3.2 Lewisville Pool Elevation Restrictions

The following restrictions are related to pool elevation and normal flood pool storage within Lewisville Reservoir. The elevations are general guidance relating to how flood pool operations could affect construction.

The Contracting Officer working with the Lead Engineer, Fort Worth District Engineering staff, and the SWD DSPC staff will make the final decisions regarding when actions will be taken to protect the structure and halt construction activities during a spillway flow event. This could be earlier or later than what is discussed in the following paragraphs due to the unpredictable nature of storm events. The Contractor will be compensated for costs associated with work stoppages and lost work resulting from flood pool operations in the event the Contracting Officer stops work due to a high pool and/or spillway flow event.

1.3.2.1 Weir Anchors

The installation of the weir anchors may continue as normal according to the plans and specifications when the pool elevation is below 527. The Contractor and the Contracting Officer will begin discussions regarding current construction status and rainfall and pool forecasts when the pool exceeds elevation 527. The drilling of all weir anchors must stop when the pool reaches elevation 528 and any open anchor holes must be completed prior to reaching elevation 530. Removal of work platforms must begin at a pool elevation of 529 and be completed before the pool reaches elevation

531. Any platforms constructed on the weir must be able to be removed within 48 hours. Any holes that cannot be completed by the time the pool reaches elevation 530 must be backfilled with a weak grout and the recesses backfilled with high early strength concrete and begin the

SECTION 01 00 00.00 44 Page 5 removal of all equipment and materials from the spillway. All equipment and materials must be removed from the spillway when the pool reaches elevation 531. No entry into the spillway is allowed until the pool recedes below elevation 531 and the Contracting Officer permits re-entry.

1.3.2.2 Upstream Cofferdam and Geomembrane

Upstream cofferdam and geomembrane construction must start between July 1 and October 31. Construction may extend past October 31 and all upstream work associated with the geomembrane and final channel grading must be complete by February 1. Any flood damages to the upstream work that occur after February 1 are the responsibility of the Contractor. The construction of the cofferdam must not begin unless the pool elevation is at or below 523 and is either steady or falling. The Contractor and the Contracting Officer will begin discussions regarding rainfall and pool forecasts when the pool reaches elevation 526. The Contractor must have all equipment and personnel removed from the area protected by the cofferdam when the pool reaches elevation 527. The cofferdam must be removed within 45 days of completion of the geomembrane and associated work. No entry into the spillway channel is allowed until the pool recedes below elevation 526.

1.3.2.3 Training Wall

The training wall segment must not be demolished unless the pool is below elevation 527 and forecast to remain steady or fall within the next 5 days. Demolition and replacement of the wall segment must be complete within 7 days. In the event the pool is expected to exceed the spillway crest and the training wall backfill has been removed, backfill the training walls with 24 hours of being notified of the spillway overtopping forecast.

1.3.2.4 Removal and Replacement of Existing Slabs

The removal and replacement of existing slabs including the installation of the subsurface drainage system can continue as normal according to the plans and specifications when the pool elevation is below 527. The Contractor and the Contracting Officer will begin discussions regarding current construction status and rainfall and pool forecasts when the pool reaches elevation 528. No additional slab removal can occur when the pool reaches elevation 529. Complete the construction of any open trenches or backfill with temporary fill. Any existing apron slabs that have been removed but have not been replaced must be backfilled with high early strength concrete and begin the removal of all equipment and materials from the spillway. All equipment and materials must be removed from the spillway when the pool reaches elevation 531. No entry into the spillway is allowed until the pool recedes below elevation 531.

1.3.2.5 Turndown Wall Drilled Piers

The installation of the turned down wall drilled piers may continue as normal according to the plans and specifications when the pool elevation is below 527. The Contractor and the Contracting Officer will begin discussions regarding current construction status and rainfall and pool forecasts when the pool reaches elevation 528. The drilling of all piers for the turn down walls will stop when the pool reaches elevation 529.

Complete the construction of any open drilled piers and begin the removal of all equipment and materials from the spillway. All equipment and materials must be removed from the spillway when the pool reaches

SECTION 01 00 00.00 44 Page 6 elevation 531. No entry into the spillway is allowed until the pool recedes below elevation 531 and the Contracting Officer permits re-entry.

1.3.2.6 Apron Overlay Slabs

The installation of the apron overlay slabs including the drainage layer and apron rock dowels may continue as normal according to the plans and specifications when the pool elevation is below 527. The Contractor and the Contracting Officer will begin discussions regarding current construction status and rainfall and pool forecasts when the pool reaches elevation 528. The drilling of all apron rock dowels must stop when the pool reaches elevation 529 and any open rock dowel holes must be completed and begin the removal of all equipment and materials from the spillway.

All equipment and materials must be removed from the spillway when the pool reaches elevation 531. No entry into the spillway is allowed until the pool recedes below elevation 531.

1.3.3 Open Excavation Restrictions

a. Upstream Geomembrane: The excavation for the upstream geomembrane cannot be exposed for longer than one week before placement of geotextile and backfill.

b. Training Wall Excavation: Training Wall excavation cannot be exposed longer than two weeks before placement of backfill.

c. Apron Slab Replacement Excavation: Apron slab foundation excavation cannot be exposed longer than 6 hours prior to application of the mudmat.

d. Turndown Wall System Excavation: Turndown wall system foundation excavation cannot be exposed longer than 6 hours prior to application of mudmat or shotcrete.

e. Grouted Riprap Excavation: Grouted riprap excavation cannot be exposed longer than three days before the placement of geotextile and bedding.

1.3.4 Working Hours

Normal working hours are Monday through Friday, 0700 to 1700 hours, unless otherwise indicated at the preconstruction conference. Submit request to work at times other than the stated working hours, including scheduled utility outages discussed below or for concrete placements at night, to the Contracting Officer for approval. Do not work outside of the above stated working hours without prior written approval of the Contracting Officer.

1.3.5 Site Security Requirements

Trespassing by unauthorized personnel continues to be a common occurrence at the Lewisville Dam auxiliary spillway. These individuals have vandalized permanent structures. Some examples include graffiti and throwing riprap onto the spillway floor from nearby rock placements. Most notably a small explosive device was exploded on the spillway floor in 2020 causing superficial damage to the floor of the spillway. Also, during recent construction activities at the spillway, damage to construction vehicles has occurred during non-working hours and a skid steer loader was stolen.

SECTION 01 00 00.00 44 Page 7

Based on this information, it is the responsibility of the Contractor to provide the necessary security measures to protect the associated features of work throughout the duration of the project. Personnel armed with lethal weapons are not allowed on Federal Property.

1.4 UTILITIES

1.4.1 Payment for Utility Services

Utility availability and Payment For Utility Services are specified in Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROL.

1.4.2 Coordination

For Contractor Telephone And Internet Service, coordinate with the local phone company for service during construction.

1.4.3 Outages

Coordinate all requests for utility outages with the Contracting Officer and local utility provider (where applicable) in writing 14 days prior to date of requested outage:

a. Water, gas, and sewer outages must be held to a maximum duration of 4 hours unless otherwise approved in writing.

b. Electrical outages must have a maximum duration of 4 hours.

1.5 CONTRACTOR PAYROLL RECORD

Contractor must be required to log payrolls for all their own employees and subcontractors utilizing ENG Form 3180. Each subcontractor requires a separate ENG 3180 for their payrolls. The Contractor must maintain the ENG 3180, along with the payrolls, on site and available for review by the Contracting Officer's Representative. The ENG 3180's must be updated weekly as payrolls are submitted. After making copies for their files, the Contractor is required to submit the originals of each week’s payrolls to the Resident Office. Before final payment, provide the completed ENG 3180’s to the Contracting Officer.

1.6 (S-102) CONTRACTOR SUPPLY and USE OF ELECTRONIC SOFTWARE FOR PROCESSING DAVIS-BACON ACT CERTIFIED LABOR PAYROLLS (April 2011)

a. The Contractor is required to use a commercially-available electronic system to process and submit certified payrolls electronically to the Government. The requirements for preparing, processing and providing certified labor payrolls are established by the Wage Rate Requirements statute.

b. The Contractor is responsible for obtaining and providing for all access, licenses, and other services required to provide for receipt, processing, certifying, electronically transmitting to the Government, and storing weekly payrolls and other data required for the Contractor to comply with the Wage Rate Requirements statute. When the Contractor uses an electronic payroll system, the electronic payroll service must be used by the Contractor to prepare, process, and maintain the relevant payrolls and basic records during all work under this construction contract and the electronic payroll service must be capable of preserving these payrolls and related basic records for the

SECTION 01 00 00.00 44 Page 8 required 3 years after contract completion. The Contractor must obtain and provide electronic system access to the Government, as required to comply with the Wage Rate Requirements over the duration of this construction contract. The access must include electronic review access by the Government contract administration office to the electronic payroll processing system used by the Contractor.

c. The Contractor's provision and use of an electronic payroll processing system must meet the following basic functional criteria:

(1) commercially available;

(2) compliant with appropriate Wage Rate Requirements statute payroll provisions in the Federal Acquisition Regulation (FAR);

(3) able to accommodate the required numbers of employees and subcontractors planned to be employed under the contract

(4) capable of producing an Excel spreadsheet-compatible electronic output of weekly payroll records for export in an Excel spreadsheet.

(5) demonstrated security of data and data entry rights;

(6) ability to produce Contractor-certified electronic versions of weekly payroll data;

(7) ability to identify erroneous entries and track the date/time of all versions of the certified Wage Rate Requirements statute payrolls submitted to the government over the life of the contract;

(8) capable of generating a durable record copy, that is, a CD or DVD and PDF file record of data from the system database at end of the contract closeout. This durable record copy of data from the electronic payroll processing system must be provided to the Government during contract closeout.

d. All Contractor-incurred costs related to the Contractor's provision and use of an electronic payroll processing service must be included in the Contractor's price for the overall work under the contract.

The costs for compliance with the Wage Rate Requirements statute by using electronic payroll processing services must not be a separately bid or reimbursed item under this contract.

1.7 STREET CLOSINGS

Coordinate all requests for street closings with the Contracting Officer in writing 14 days prior to date of requested outage:

a. Maintain one lane traffic at all times (except that a total closing may be allowed for specific 8-hour periods).

b. The final street repair must be completed within 21 calendar days after the start of any street crossing. Any part of the street returned to service prior to final repair must be maintained smooth with hot-mix cold-lay surface course or other driving surface course as approved by the Contracting Officer.

SECTION 01 00 00.00 44 Page 9

1.8 MOBILIZATION AND DEMOBILIZATION

1.8.1 Mobilization

Mobilization will be considered the transportation to the project site of all plant and equipment for the various items of work. Payments in accordance with clause DFAR 252.236-7004 PAYMENT FOR MOBILIZATION AND DEMOBILIZATION and Section 01 20 00 MEASUREMENT AND PAYMENT will be made upon completion of the mobilization as described above and in accordance with Contract Clause PROGRESS PAYMENTS. Purchase of plant and equipment will not be considered as mobilization cost.

1.8.2 Demobilization

Demobilization will be considered the transportation of all plant and equipment from the project site. Payment for demobilization will be included in the payment after the plant and equipment are removed from the project site under this Contract, in accordance with the clause DFAR 252.236-7004 PAYMENT FOR MOBILIZATION AND DEMOBILIZATION, the Section 01 20 00 MEASUREMENT AND PAYMENT, and Contract Clause PROGRESS PAYMENTS.

1.9 Veterans Employment Emphasis for U.S. Army Corps of Engineers Contracts

In addition to complying with the requirements outlined in FAR Part 22.13, FAR Provision 52.222-38, FAR Clause 52.222-35, FAR Clause 52.222-37, DFARS 222.13 and Department of Labor regulations, U.S. Army Corps of Engineers (USACE) Contractors and Subcontractors at all tiers are encouraged to promote the training and employment of U.S. veterans while performing under a USACE contract. While no set-aside, evaluation preference, or incentive applies to the solicitation or performance under the resultant contract, USACE Contractors are encouraged to seek out highly qualified veterans to perform services under this contract. The following resources are available to assist USACE Contractors in their outreach efforts:

Federal Veteran employment information at http://www.fedshirevets.gov Department of Labor Veterans Employment Assistance http://www.dol.gov/agencies/vets/ Department of Veteran Affairs - VOW to Hire Heroes Act http://benefits.va.gov/vow/ Army Wounded Warrior Program https://wtc.army.mil/modules/employers/index.html U.S. Chamber of Commerce Foundation - Hiring Our Heroes http://www.hiringourheroes.org/ Guide to Hiring Veterans - Reference Material -ht t ps: / / obamawhi t ehouse. ar chi ves. gov/ si t es/ def aul t / f i l es/ docs/ whi t e_house_busi ness_counci l _- _gui de_t o_hi r i ng_vet er ans_0. pdf

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

-- End of Section --

SECTION 01 00 00.00 44 Page 10

Dam Safety Modification - Spillway Solicitation No. W91426G21R0004

SECTION 31 63 29

DRILLED CONCRETE PIERS AND SHAFTS

11/14

<AMENDMENT 0004>

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO LRFDCONS (4th Edition; 2017, 2018, 2020 Int) Bridge Construction Specifications

AMERICAN CONCRETE INSTITUTE (ACI)

ACI 301 (2016) Specifications for Structural Concrete

ACI 305.1 (2014) Specification for Hot Weather Concreting

ACI 305R (2010) Guide to Hot Weather Concreting

ACI 306.1 (1990; R 2002) Standard Specification for Cold Weather Concreting

ACI 306R (2016) Guide to Cold Weather Concreting

ACI 318 (2014; Errata 1-2 2014; Errata 3-5 2015;

Errata 6 2016; Errata 7-9 2017) Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14)

ACI 336.1 (2001) Specification for the Construction of Drilled Piers

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020) Structural Welding Code - Steel

AWS D1.4/D1.4M (2011) Structural Welding Code - Reinforcing Steel

ASTM INTERNATIONAL (ASTM)

ASTM A992/A992M (2011; R 2015) Standard Specification for Structural Steel Shapes

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A252 (2010) Standard Specification for Welded

SECTION 31 63 29 Page 1 Accompanying Amendment 0004 to Solicicitation No. W9126G21R0004 and Seamless Steel Pipe Piles

ASTM C94/C94M (2018) Standard Specification for Ready-Mixed Concrete

INTERNATIONAL ASSOCIATION OF FOUNDATION DRILLING

ADSC (2004) Drilled Shaft Inspector's Manual

U.S. FEDERAL HIGHWAY ADMINISTRATION (FHWA)

FHWA NHI-18-024 (2018) Drilled Shafts: Construction Procedures and Design Methods

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1926.501 Duty to Have Fall Protection

29 CFR 1926.502 Fall Protection Systems Criteria and Practices

29 CFR 1926.651 Specific Excavation Requirements

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

ER 1110-1-1807 (2014) Drilling in Earth Embankment Dams and Levees

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Drilling Program Plan; G, DO

Concrete Placement Plan; G, DO

Installation Plan; G, DO

Qualification Of Drilled…