B.08.03 Amend 0001 W912HY21B0021 20210825.pdf

451902

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

SEE SECTION SF 30 BLOCK 14 CONTINUATION PAGE

1. CONTRACT ID CODE PAGE OF PAGES

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 W912HY21B0021

X 9B. DATED (SEE ITEM 11)

05-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, X 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 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.0001

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

25-Aug-2021

CODE

US ARMY CORPS OF ENGINEERS

GALVESTON DISTRICT

CONTRACTING DIVISION

2000 FORT POINT ROAD

GALVESTON TX 77550-1229

W912HY 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

1 2

W912HY21B0021

A0001-2

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

1. The specifications for Solicitation No. W912HY21B0021, Houston Ship Channel, Texas, Bolivar Roads to Redfish Reef in Galveston County, Texas, Dollar Reef Oyster Mitigation, are hereby amended as follows:

a) Specifications.

(1) SECTION 00 72 00, GENERAL CONDITIONS – The enclosed SECTION 00 72 00 entitled GENERAL CONDITIONS included with issued Solicitation.

(2) SECTION 35 32 16.10 45, REEF PAD CONSTRUCTION – The enclosed SECTION 35 32

16.10 45 entitled REEF PAD CONSTRUCTION included with issued Solicitation.

2. This amendment shall be attached to and become a part of the solicitation.

2 Encls:

1. SECTION 00 72 00, GENERAL CONDITIONS

2. SECTION 35 32 16.10 45, REEF PAD CONSTRUCTION

Document 00 72 00

TO ACCOMPANY AMENDMENT NO. 0001 TO SOLICITATION W912HY21B0021

SECTION 00 72 00 - GENERAL CONDITIONS

The following have been added by full text:

52.225-11 BUY AMERICAN--CONSTRUCTION MATERIALS UNDER TRADE AGREEMENTS

(JAN 2021)

(a) Definitions. As used in this clause--

Caribbean Basin country construction material means a construction material that--

(1) Is wholly the growth, product, or manufacture of a Caribbean Basin country; or

(2) In the case of a construction material that consists in whole or in part of materials from another country, has been substantially transformed in a Caribbean Basin country into a new and different construction material distinct from the materials from which it was transformed.

Commercially available off-the-shelf (COTS) item—

(1) Means any item of supply (including construction material) that is--

(i) A commercial item (as defined in paragraph (1) of the definition at Federal Acquisition Regulation (FAR) 2.101);

(ii) Sold in substantial quantities in the commercial marketplace; and

(iii) Offered to the Government, under a contract or subcontract at any tier, without modification, in the same form in which it is sold in the commercial marketplace; and

(2) Does not include bulk cargo, as defined in 46 U.S.C. 40102(4)such as agricultural products and petroleum products.

Component means an article, material, or supply incorporated directly into a construction material.

Construction material means an article, material, or supply brought to the construction site by the Contractor or subcontractor for incorporation into the building or work. The term also includes an item brought to the site preassembled from articles, materials, or supplies. However, emergency life safety systems, such as emergency lighting, fire alarm, and audio evacuation systems, that are discrete systems incorporated into a public building or work and that are produced as complete systems, are evaluated as a single and distinct construction material regardless of when or how the individual parts or components of those systems are delivered to the construction site.

Materials purchased directly by the Government are supplies, not construction material.

Cost of components means--

(1) For components purchased by the Contractor, the acquisition cost, including transportation costs to the place of incorporation into the construction material (whether or not such costs are paid to a domestic firm), and any applicable duty (whether or not a duty-free entry certificate is issued); or

(2) For components manufactured by the Contractor, all costs associated with the manufacture of the component, including transportation costs as described in paragraph (1) of this definition, plus allocable overhead costs, but excluding profit. Cost of components does not include any costs associated with the manufacture of the construction material.

Designated country means any of the following countries:

(1) A World Trade Organization Government Procurement Agreement (WTO GPA) country (Armenia, Aruba, Australia, Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, Ireland, Israel, Italy, Japan, Korea (Republic of), Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Montenegro, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Singapore, Slovak Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, Ukraine, or United Kingdom);

(2) A Free Trade Agreement (FTA) country (Australia, Bahrain, Canada, Chile, Colombia, Costa Rica, Dominican Republic, El Salvador, Guatemala, Honduras, Korea (Republic of), Mexico, Morocco, Nicaragua, Oman, Panama, Peru, or Singapore);

(3) A least developed country (Afghanistan, Angola, Bangladesh, Benin, Bhutan, Burkina Faso, Burundi, Cambodia, Central African Republic, Chad, Comoros, Democratic Republic of Congo, Djibouti, Equatorial Guinea, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Nepal, Niger, Rwanda, Samoa, Sao Tome and Principe, Senegal, Sierra Leone, Solomon Islands, Somalia, South Sudan, Tanzania, Timor-Leste, Togo, Tuvalu, Uganda, Vanuatu, Yemen, or Zambia); or

(4) A Caribbean Basin country (Antigua and Barbuda, Aruba, Bahamas, Barbados, Belize, Bonaire, British Virgin Islands, Curacao, Dominica, Grenada, Guyana, Haiti, Jamaica, Montserrat, Saba, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Sint Eustatius, Sint Maarten, or Trinidad and Tobago).

Designated country construction material means a construction material that is a WTO GPA country construction material, an FTA country construction material, a least developed country construction material, or a Caribbean Basin country construction material.

Domestic construction material means--

(1) For construction material that does not consist wholly or predominantly of iron or steel or a combination of both-

(i) An unmanufactured construction material mined or produced in the United States; or

(ii) A construction material manufactured in the United States, if--

(A) The cost of its components mined, produced, or manufactured in the United States exceeds 55 percent of the cost of all its components. Components of foreign origin of the same class or kind for which nonavailability determinations have been made are treated as domestic. Components of unknown origin are treated as foreign; or

(B) The construction material is a COTS item; or

(2) For construction material that consists wholly or predominantly of iron or steel or a combination of both, a construction material manufactured in the United States if the cost of foreign iron and steel constitutes less than 5 percent of the cost of all components used in such construction material. The cost of foreign iron and steel includes but is not limited to the cost of foreign iron or steel mill products (such as bar, billet, slab, wire, plate, or sheet), castings, or forgings utilized in the manufacture of the construction material and a good faith estimate of the cost of all foreign iron or steel components excluding COTS fasteners. Iron or steel components of unknown origin are treated as foreign. If the construction material contains multiple components, the cost of all the materials used in such construction material is calculated in accordance with the definition of "cost of components".

Fastener means a hardware device that mechanically joins or affixes two or more objects together. Examples of fasteners are nuts, bolts, pins, rivets, nails, clips, and screws.

Foreign construction material means a construction material other than a domestic construction material.

Foreign iron and steel means iron or steel products not produced in the United States. Produced in the United States means that all manufacturing processes of the iron or steel must take place in the United States, from the initial melting stage through the application of coatings, except metallurgical processes involving refinement of steel additives. The origin of the elements of the iron or steel is not relevant to the determination of whether it is domestic or foreign.

Least developed country construction material means a construction material that--

(1) Is wholly the growth, product, or manufacture of a least developed country; or

(2) In the case of a construction material that consists in whole or in part of materials from another country, has been substantially transformed in a least developed country into a new and different construction material distinct from the materials from which it was transformed.

Free Trade Agreement country construction material means a construction material that—

(1) Is wholly the growth, product, or manufacture of a Free Trade Agreement (FTA) country; or

(2) In the case of a construction material that consists in whole or in part of materials from another country, has been substantially transformed in a FTA country into a new and different construction material distinct from the materials from which it was transformed.

Least developed country construction material means a construction material that—

(1) Is wholly the growth, product, or manufacture of a least developed country; or

(2) In the case of a construction material that consists in whole or in part of materials from another country, has been substantially transformed in a least developed country into a new and different construction material distinct from the materials from which it was transformed.

Predominantly of iron or steel or a combination of both means that the cost of the iron and steel content exceeds 50 percent of the total cost of all its components. The cost of iron and steel is the cost of the iron or steel mill products (such as bar, billet, slab, wire, plate, or sheet), castings, or forgings utilized in the manufacture of the product and a good faith estimate of the cost of iron or steel components excluding COTS fasteners.

Steel means an alloy that includes at least 50 percent iron, between 0.02 and 2 percent carbon, and may include other elements.

United States means the 50 States, the District of Columbia, and outlying areas.

WTO GPA country construction material means a construction material that--

(1) Is wholly the growth, product, or manufacture of a WTO GPA country; or

(2) In the case of a construction material that consists in whole or in part of materials from another country, has been substantially transformed in a WTO GPA country into a new and different construction material distinct from the materials from which it was transformed.

(b) Construction materials.

(1) This clause implements 41 U.S.C. chapter 83, Buy American, by providing a preference for domestic construction material. In accordance with 41 U.S.C.

1907, the domestic content test of the Buy American statute is waived for construction material that is a COTS item, except that for construction material that consists wholly or predominantly of iron or steel or a combination of both, the domestic content test is applied only to the iron and steel content of the construction material, excluding COTS fasteners. (See FAR 12.505(a)(2)). In addition, the Contracting Officer has determined that the WTO GPA and Free Trade Agreements (FTAs) apply to this acquisition.

Therefore, the Buy American restrictions are waived for designated country construction materials.

(2) The Contractor shall use only domestic or designated country construction material in performing this contract, except as provided in paragraphs (b)(3) and (b)(4) of this clause.

(3) The requirement in paragraph (b)(2) of this clause does not apply to information technology that is a commercial item or to the construction materials or components listed by the Government as follows:

NONE

(4) The Contracting Officer may add other foreign construction material to the list in paragraph (b)(3) of this clause if the Government determines that--

(i) The cost of domestic construction material would be unreasonable. The cost of a particular domestic construction material subject to the restrictions of the Buy American statute is unreasonable when the cost of such material exceeds the cost of foreign material by more than 20 percent;

(ii) The application of the restriction of the Buy American statute to a particular construction material would be impracticable or inconsistent with the public interest; or

(iii) The construction material is not mined, produced, or manufactured in the United States in sufficient and reasonably available commercial quantities of a satisfactory quality.

(c) Request for determination of inapplicability of the Buy American statute.

(1)(i) Any Contractor request to use foreign construction material in accordance with paragraph (b)(4) of this clause shall include adequate information for Government evaluation of the request, including--

(A) A description of the foreign and domestic construction materials;

(B) Unit of measure;

(C) Quantity;

(D) Price;

(E) Time of delivery or availability;

(F) Location of the construction project;

(G) Name and address of the proposed supplier; and

(H) A detailed justification of the reason for use of foreign construction materials cited in accordance with paragraph (b)(3) of this clause.

(ii) A request based on unreasonable cost shall include a reasonable survey of the market and a completed price comparison table in the format in paragraph (d) of this clause.

(iii) The price of construction material shall include all delivery costs to the construction site and any applicable duty (whether or not a duty-free certificate may be issued).

(iv) Any Contractor request for a determination submitted after contract award shall explain why the Contractor could not reasonably foresee the need for such determination and could not have requested the determination before contract award. If the Contractor does not submit a satisfactory explanation, the Contracting Officer need not make a determination.

(2) If the Government determines after contract award that an exception to the Buy American statute applies and the Contracting Officer and the Contractor negotiate adequate consideration, the Contracting Officer will modify the contract to allow use of the foreign construction material.

However, when the basis for the exception is the unreasonable price of a domestic construction material, adequate consideration is not less than the differential established in paragraph (b)(4)(i) of this clause.

(3) Unless the Government determines that an exception to the Buy American statute applies, use of foreign construction material is noncompliant with the Buy American statute.

(d) Data. To permit evaluation of requests under paragraph (c) of this clause based on unreasonable cost, the Contractor shall include the following information and any applicable supporting data based on the survey of suppliers:

Foreign and Domestic Construction Materials Price Comparison Construction material description Unit of measure Quantity Price (dollars) * Item 1:

Foreign construction material Domestic construction material Item 2:

Foreign construction material Domestic construction material [* Include all delivery costs to the construction site and any applicable duty (whether or not a duty-free entry certificate is issued)].

[List name, address, telephone number, and contact for suppliers surveyed.

Attach copy of response; if oral, attach summary.]

[Include other applicable supporting information.]

(End of clause)

SWG FILE NO.: HSC 401-585 SOLICITATION NO.: W912HY21B0021

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 32 16.10 45

REEF PAD CONSTRUCTION

PART 1 GENERAL

1.1 SUMMARY

1.2 MEASUREMENT AND PAYMENT

1.3 ORDER OF WORK

1.4 REFERENCES

1.5 SUBMITTALS

1.6 Attachment A - Logs of Borings

1.7 QUALITY CONTROL

1.7.1 General

1.7.2 Sources

1.7.3 Quality Testing AM#1

1.7.4 Specific Gravity and Gradation TestingAM#1

1.7.5 Quarry Operations

1.7.6 Daily Records

1.7.6.1 Barge Placement Measurements

1.7.6.2 Fore and Aft Displacements

1.7.6.3 Barge Displacement Tables

1.7.6.4 Repairs and Additions

1.7.6.5 Determination of Weights

1.8 UTILITIES ACROSS THE LIMITS OF WORK

1.8.1 Known Pipeline/Utility Crossings

PART 2 PRODUCTS

2.1 REEF PAD MATERIAL

2.1.1 Material Options

2.1.2 Crushed Limestone

2.1.3 Crushed Concrete

2.1.4 River Rock

2.1.5 Gradation

2.1.6 Inspection

2.2 REEF PAD FOUNDATION MATERIAL

PART 3 EXECUTION

3.1 CONSTRUCTION METHODS AND EQUIPMENT

3.2 PREPARATION

3.2.1 Base Preparation

3.2.2 Pre-Construction Hazard Survey

3.3 REEF PAD CONSTRUCTION

3.3.1 Material Placement

3.3.2 Misplaced Materials

3.3.3 Surveys AM#1

3.4 ACCEPTANCE

3.5 CORRECTIVE ACTIONS

SECTION 35 32 16.10 45 Page 1

ATTACHMENTS:

Attachment A - Logs of Boring

Appendix A.

-- End of Section Table of Contents --

SECTION 35 32 16.10 45 Page 2

35 32 16.10 45

REEF PAD CONSTRUCTION

Amendment No. 0001

PART 1 GENERAL

1.1 SUMMARY

The work includes furnishing all materials, labor, and equipment for construction of DRM reef pads (oyster reef) in accordance with these specifications and applicable drawings. Oyster reef construction must meet minimum requirements shown on the Plans in order to achieve oyster recruitment and establish living reef. Construction to consist of mechanical placement of cultch into a pad within the designed horizontal limits and to the specified elevations as shown on the plans. All of the pads shall have finished elevations as shown on the Plans plus or minus 0.5-feet of tolerance. The contractor shall determine its own means and methods of construction and quantity of materials to achieve this elevation.

1.2 MEASUREMENT AND PAYMENT

Measure and payment for Reef Pad Construction will be paid for in accordance with provisions of the Section

01 22 00.10 MEASUREMENT AND PAYMENT .

1.3 ORDER OF WORK

The sequence of construction shall be determined by the Contractor except as stated within these specifications or on the drawings. Construction shall be continuous from start to finish with no appreciable shut-down periods.

1.4 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.

ASTM INTERNATIONAL (ASTM)

ASTM C127 (2015) Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate

ASTM C136/C136M (2019) Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

ASTM C535 (2016) Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

ASTM C702/C702M (2018) Standard Practice for Reducing

SECTION 35 32 16.10 45 Page 3

Samples of Aggregate to Testing Size

ASTM D75/D75M (2019) Standard Practice for Sampling Aggregates

ASTM D3740 (2019) Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

ASTM E329 (2020) Standard Specification for Agencies Engaged in Construction Inspection, Testing, or Special Inspection

Texas Department of Transportation (TxDOT)

TxDOT Item 247 Flexible Base

1.5 SUBMITTALS

Government approval is required for the following submittals:

SD-01 Preconstruction Submittals

Reef Pad Placement Plan; G

Reef Pad Material Type

Barge Displacement Table(s)

Prior to commencement of construction, Contractor shall submit a Reef Pad Placement Plan describing the planned sequence, placement method, material source, and surveying methodology for the work.

SD-06 Test Reports

Gradation

Reef Pad Material

SD-07 Certificates

Certificates of Compliance from testing laboratory attesting that the materials meet specification requirements.

Materials Testing Center Qualifications .

Submit a copy of the documents, provided by the Materials Testing Center (MTC) at ERDC, that validates that the laboratory is qualified to perform the required tests. The individual tests shall be listed for which the validation covers along with the date of the inspection.

SD-11 Closeout Submittals

Pre-Construction Hazard Survey

Surveys

SECTION 35 32 16.10 45 Page 4

Final Survey Drawings

1.6 Attachment A - Logs of Borings

Refer to Attachment A - Logs of Boring data provided at the end of this Section.

1.7 QUALITY CONTROL

1.7.1 General

All reef pad material shall be durable material as approved by the Contracting Officer. Reef pad material shall be of a suitable quality to ensure permanence in the structure and in the environment in which it is to be used. It shall be free from cracks, blast fractures, bedding, seams and other defects that would tend to increase its deterioration from natural causes. The reef pad material shall be clean and adequately free from all foreign matter. Any foreign material adhering to or combined with the reef pad material as a result of stockpiling shall be removed prior to placement.

1.7.2 Sources

Before reef pad material is produced from a source for completion of the work, the source of reef pad material shall be approved by the Contracting Officer. Approval of a reef pad material source shall not be construed as a waiver of the right of the Government to require the Contractor to furnish reef pad material that complies as specified herein. Materials produced from localized areas, zones, or strata will be rejected when these materials do not comply as specified herein.

a. Source Documentation: Authorization of proposed reef pad material source will be based on prior test results and service records. The Contracting Officer may elect to use either past USACE test results or a combination of service records along with USACE approved test results from other agencies or private laboratories. A service record is considered acceptable if reef pad material from the proposed source has remained sound and functional after at least 10 years of exposure on a project similar to the one to be constructed under this contract.

b. Acceptance of Materials: During the contract period, both prior to and after materials are delivered to the job site, visual inspections and measurements of the reef pad material may be performed by the Contracting Officer. Per USACE EM 1110-2-2302 , the Contracting Officer shall be notified at least 3 working days in advance of both shipment and anticipated delivery dates of the materials so that visual inspections may be performed. If the Contracting Officer, during the inspections, finds that the reef pad material quality, gradation or weights of reef pad material being furnished are not as specified or are questionable, re-sampling and re-testing by the Contractor shall be required. Sampling of the delivered reef pad material for re-testing and the manner in which the re-testing is to be performed shall be as directed by the Contracting Officer. This additional sampling and testing shall be performed at the Contractor's expense when test results indicate that the materials do not meet specified requirements. Any material rejected shall be removed or disposed of as specified and at the Contractor's expense.

SECTION 35 32 16.10 45 Page 5

1.7.3 Quality Testing AM#1

Contractor's quality assurance testing shall be performed by a qualified testing laboratory meeting the requirements of ASTM D3740 and ASTM E329, and qualified by USACE Materials Testing Center (MTC). Per f or m speci f i c gr avi t y and gr adat i on t est or t est s on t he r eef pad mat er i al at t he quar r y. Not i f y t he COnt r act i ng Of f i cer not l ess t han 3 days i n advance of each t est . At least 15 calendar days in advance of shipment of reef pad material to the work site, a copy of quality test results shall be furnished. Samples to be tested shall be selected by the Contractor, unless otherwise directed by the Government if present. The Government reserves the right to perform independent testing. Costs for this additional sampling and testing shall be at the Contractor's expense.

At least one set of quality tests shall be performed of reef pad material. Periodic t Tests for specific gravity and gradation shall be performed by the Contractor for each 2,000 8,600 tons of reef pad material shipped. Not less than 3 sets of specific gravity and gradation tests shall be performed for each reef pad material type . Sampling of the reef pad material shall be performed in accordance with ASTM D75/D75M and

ASTM C702/C702M.

1.7.4 Speci f i c Gr avi t y and Gradation Testing AM#1

Perform a gradation test or tests on the reef pad material at the quarry.

Notify the Contracting Officer not less than 3 days in advance of each test. At least one gradation test(s) shall be performed per 10,000 cubic yards of each size for each reef pad material type placed, but not less than 3 tests shall be performed for each reef pad material type. At least 15 calendar days in advance of shipment of reef pad material to the work site, a copy of initial gradation test results shall be furnished. Specific gr avi t y shal l be as det er mi ned i n accor dance wi t h ASTM C127. Ref er t o par agr aphs 2. 1. 2 and 2. 1. 3. Gr adat i on shal l be det er mi ned i n accor dance wi t h ASTM C136/ C136M. Ref er t o par agr aph 2. 1. 5.

1.7.5 Quarry Operations

Conduct quarry operations in a manner to produce stone conforming to the requirements specified; this may involve selective quarrying, handling, processing, blending, and loading as necessary.

1.7.6 Daily Records

Contractor's daily activity reports shall include barge displacement measurements and associated calculations as documentation of the volume and/or tonnage of reef pad material placed each day. This information shall be provided for use by Contracting Officer and shall not serve as the basis for payment.

1.7.6.1 Barge Placement Measurements

The barge shall be gaged at an approved protected location near the site.

For this purpose, each barge shall be fitted by the Contractor at its expense, with gages graduated either to inches or tenths of a foot, located either inside or outside of the hull as directed and attached solidly to the hull itself. These gages shall be located two near each end of the vessel on opposite sides and two additional gages amid ship if deemed necessary by the Contracting Officer. If located inside the hull, provision shall be made for the free passage of the outside water to a

SECTION 35 32 16.10 45 Page 6 transparent tube placed or capable of being placed, in contact with the gage. If located outside upon wooden hulls, the gages shall be protected by solid fenders or recessed into the planking, or if upon steel hulls, the gage marks may be placed directly on the plates and identified by punch marks. Gages shall be placed so that their zeros are below water when the vessel is in its normal trim, light, and free from water. In lieu of the gages in the interior of the barge, the Contractor may at its discretion, provide an equal number of wells for determining the amount of the load.

These wells shall be located as specified for interior gages and shall be constructed as approved.

1.7.6.2 Fore and Aft Displacements

Fore and aft displacements, due to load, shall not differ more than 10 percent from their mean for the determination of tonnage of each barge load of stone ready for placement. In determining the tonnage of a cargo, the change in gage readings due to discharge of the cargo shall be used.

1.7.6.3 Barge Displacement Tables

The barges shall be fitted for the work sufficiently ahead of the time fixed for commencement to enable the Contracting Officer to measure them accurately before beginning work. The Contractor shall at its expense place barges in dry dock for measurement and furnish materials and facilities for taking the necessary measurements for preparing barge displacement tables. The Contractor shall pump the water from the barges when so requested but no pumping of a barge shall be done between the time it is gaged loaded and light to determine the amount of barge load.

1.7.6.4 Repairs and Additions

Repairs and additions made to the barges during the progress of the work shall be promptly reported to the Contracting Officer. During the progress of the work, when the Contracting Officer deems it advisable or necessary, each barge shall be re-measured at the expense of the Contractor and under the supervision of the Contracting Officer. No barge shall be used which is not in a seaworthy condition or which leaks excessively. The barges used shall be so constructed that when loaded they do not bend or warp so that the gages are unreliable. Each barge load shall contain only one type of material.

1.7.6.5 Determination of Weights

The gages shall be read in calm water conditions which will allow accurate determination of weights. Locations of the gauge readings shall be approved in advance. To determine the load, measurements will be taken immediately before a barge starts for its point of unloading and immediately after it returns from that point. The gages will be read by the Contracting Officer and the Contractor is invited to be present when the readings are taken.

Disagreements on the part of the Contractor as to the weight of material will be submitted in writing within 10 days of their occurrence. To ensure the use of the proper weight of surrounding water in calculating the weight of material from the barge gage readings, hydrometer measurements will be made alongside each barge when it is gaged loaded and light. Other methods of measurement may be used when approved.

1.8 UTILITIES ACROSS THE LIMITS OF WORK

It is the Contractor's responsibility to investigate the location of

SECTION 35 32 16.10 45 Page 7 utility crossings. The Contractor is to take precautions against damages which can result from dredging operations in the vicinity of the utility crossings. If damage occurs as a result of the work, the Contractor will be required to suspend work until the damage is repaired and approved.

Costs of these repairs and downtime of the equipment is to be at the Contractor's expense.

1.8.1 Known Pipeline/Utility Crossings

There are pipelines and/or utilities which are near the work limits. The following pipeline/utilities are near the work area:

Permit No. Description Status Owner

7737 24-in Carbon Dioxide Pipeline

In Service Denbury Green Pipeline - Texas, LLC Billy Shoen 281-996-7251 Billy.shoen@denbury.com

5505 20-in Natural Gas Pipeline

In Service Fieldwood Onshore LLC

774 18-in Natural Gas Pipeline

In Service Kinder Morgan Tejas Pipeline Inc.

Oscar Zapata 713-420-4654 Oscar_Zapata@kindermorgan.com

4966 10-in Gas Pipeline In Service Praxair, Inc.

EVERY EFFORT HAS BEEN MADE TO GI VE ALL PERTI NENT DETAI LS ON THE LOCATI ON

OF PI PELI NES/ UTI LI TI ES. THE DATA FURNI SHED ON THE PLANS ARE BELI EVED TO BE

SUBSTANTI ALLY CORRECT. HOWEVER, THE EXACT LOCATI ONS MAY VARY FROM THAT

SHOWN: THEREFORE, THE CONTRACTOR I S TO COOPERATE WI TH THE RESPECTI VE

OWNERS TO ESTABLI SH THE ACTUAL POSI TI ON OF THE PI PELI NES/ UTI LI TI ES.

THE FOLLOWI NG I S FURNI SHED FOR I NFORMATI ON ON VERI FYI NG PI PELI NE

OWNERSHIPS:

Texas One Call at 811, 1-800-545-6005 or online at https://www.texas811.org/

PART 2 PRODUCTS

2.1 REEF PAD MATERIAL

2.1.1 Material Options

At Contractor's option, crushed limestone, concrete riprap (crushed concrete), or river rock may be utilized at the discretion and approval of the contracting officer.

2.1.2 Crushed Limestone

Crushed limestone shall have a minimum unit weight of 140 PCF and an

SECTION 35 32 16.10 45 Page 8 absorption no greater than 5 percent. The unit weight shall be reported based on the apparent specific gravity determined in accordance with ASTM C127. Crushed limestone shall have a maximum abrasion loss of 40 percent in accordance with ASTM C535. Crushed limestone shall comply with the gradation requirements stated in paragraph titled Gradation .

2.1.3 Crushed Concrete

Concrete shall comply with the requirements of TxDOT Item 247 (Flexible Base), have a minimum unit weight of 140 pounds per cubic foot (based on apparent specific gravity), and comply with the gradation requirements stated in paragraph titled Gradation . If concrete is recycled, any rebar shall be cut flush with exposed surfaces of concrete unit. All concrete shall be clean and free of chemical contaminants. Provide test reports showing conformance of concrete riprap with TxDOT Item 247 requirements.

2.1.4 River Rock

River rock shall consist of natural fragments of rock and meet the requirements stated for crushed limestone. River rock shall comply with the gradation requirements stated in paragraph titled Gradation .

2.1.5 Gradation

Reef pad material shall be well graded. The gradation shall conform to the table below when tested following the procedures stated in

ASTM C136/C136M:

TABLE 1 - GRADATION REQUIREMENTS FOR REEF PAD

MATERIAL

SIEVE SIZE, INCH PERCENT PASSING

3 100

1/2 0-5

2.1.6 Inspection

The Government will conduct inspections as necessary, at its discretion.

2.2 REEF PAD FOUNDATION MATERIAL

Limited sampling and testing of foundation materials at the reef pad locations has been performed. Results of these are provided in the drawings. Boring logs and lab analysis of the foundation materials is provided in Appendix A.

PART 3 EXECUTION

3.1 CONSTRUCTION METHODS AND EQUIPMENT

Contractor shall select materials, methods, and equipment to construct the reef pads within the specified locations and to the specified dimensions.

Contractor shall submit reef pad placement plan , sequence, and equipment for Government review and approval prior to construction.

SECTION 35 32 16.10 45 Page 9

3.2 PREPARATION

3.2.1 Base Preparation

The surface to receive the reef pad material shall be free of debris and obstructions. No other base preparation (grading, mucking, etc.) is required.

3.2.2 Pre-Construction Hazard Survey

Prior to commencing construction activities, a magnetometer survey shall be performed over the entire work area to search for uncharted pipelines and/or other anomalies below the existing bay bottom. Four pipelines/utilities which are near the work limits have been included in subparagraph entitled Known Pipeline/Utility Crossings. Survey passes shall be no further apart than the spacing of hydrographic surveying transects shown on the drawings.

3.3 REEF PAD CONSTRUCTION

3.3.1 Material Placement

Reef pad material shall be placed within the limits indicated on the drawings. Displacement and settlement of the foundation material can be expected and shall be anticipated by the Contractor during construction.

The Contractor shall satisfy itself as to the nature of the foundation characteristics and shall base its Contract unit prices and conduct its work accordingly. Reef pad material shall be placed, spread, and evenly distributed in such a manner that produces a relatively uniform surface within the limits specified on the drawings.

3.3.2 Misplaced Materials

If any reef pad material is deposited elsewhere than in places designated or approved, Contractor shall remove such misplaced material and redeposit it where directed at his expense.

3.3.3 Surveys AM#1

a. General: Contractor shall provide initial and final hydrographic surveys, as described below, for measurement and acceptance of the reef pads. Plan-view, profile, and cross section plots showing initial and final lines and grades shall accompany monthly payment requisitions. The profile and cross section plots shall be plotted with the reef pad design template superimposed upon the plot. Survey data shall also be provided in a digital format approved by the Contracting Officer. All survey shots shall be referenced to the project datums shown on the drawings. All survey plots submitted to the Contracting Officer shall bear the seal of a professional land surveyor Regi st er ed Pr of essi onal Land Sur veyor or Pr of essi onal Engi neer , registered in the State of Texas.

b. Survey Notification: The Contracting Officer shall be notified at least 3 days prior to all surveys performed by the Contractor so that he may have the opportunity to accompany the survey crew and observe the work.

c. Survey Transects: Required survey transect locations for the initial survey and final survey shall be taken both horizontally and

SECTION 35 32 16.10 45 Page 10 longitudinally across the reef pad, along and parallel to the reef pad alignments shown on the plans, extending a minimum of 100 feet past the boundary limits of the reef pad. Survey transects shall be spaced 50 feet apart as shown on the drawings and on even stations based upon the reef pad alignments. Shot spacing along these transects shall not exceed 10 feet .

d. Transducer frequency: Transducer frequency shall be documented on survey drawings. Transducer frequency shall not vary between initial and final survey. Soundings shall be obtained by using a single beam sonar system operating nominally at 200 kHz.

e. Initial Survey: Lines and grades of the reef pad subgrade shall be surveyed by the Contractor and submitted to the Contracting Officer prior to placement of reef pad material.

f. Daily Surveys: Daily surveys shall be performed to ensure Reef Pads are being constructed to the required dimensions as work progresses.

g. Final Survey: Upon completion of placement of reef pad material, lines and grades of the reef pad shall be surveyed by the Contractor to provide verification that reef pad was constructed as shown on the drawings. Final survey submittal shall include a complete set of final survey drawings showing the constructed condition of the entire project. Cross-section and profile plots shall show the reef pad design template with grades from initial survey and final survey for verification that reef pad thickness (as measured above existing grade) requirements shown on drawings have been met. Additionally, a sidescan sonar survey shall be performed over all constructed pads and provided by the Contractor for verification of placed rock across and within all limits of the pads.

3.4 ACCEPTANCE

Acceptance of reef pads shall be based on Government's review of survey data and compliance with the locations and dimensions specified on the drawings. For acceptance, the oyster pads shall be constructed, at a minimum, to the grades and elevations shown in the Plans. Tolerances shall include minus 0.5 to plus 0.5 feet on the design pad elevation.

Final constructed pad boundary area shall not be less than 0.5 feet inside of, nor more than 5 feet beyond, the boundary defined by the reef coordinates shown unless otherwise approved by the Contracting Officer.

Abrupt changes in alignment, as determined by the Contracting Officer, will not be permitted and shall be corrected by the Contractor at no cost to the Government.

3.5 CORRECTIVE ACTIONS

Thickness of reef pad, as measured above existing grade as shown on the drawings, shall comply with the minimum and maximum dimensions stated on the drawings. If thickness is less than the minimum thickness specified on the drawings, additional material shall be added and reef pad shall be re-surveyed. If thickness is greater than the maximum thickness specified on the drawings, material redistribution or removal shall be performed, as directed by Contracting Officer, to bring non-compliant portions of reef pad within specified thickness range, and reef pad shall be re-surveyed.

No dragging or raking of reef pad shall be performed without prior approval by Contracting Officer.

SECTION 35 32 16.10 45 Page 11

-- End of Section --

SECTION 35 32 16.10 45 Page 12

2.2 REEF PAD FOUNDATION MATERIAL