A21. W912P825B0045_AM0004.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 subject solicitation for Flood Control, Amite River and Tributaries, Louisiana, Comite River Basin, Comite River Diversion Project, Comite River Diversion Channel Reach 3, East Baton Rouge Parish, Louisiana (ED 20-005) is hereby amended as follow s:

1) Make changes to the Solicitation as detailed in the continuation pages.

2) Publish Contractor questions and Government responses in the continuation pages.

3) Reschedule the virtual bid opening date to Friday, July 18, 2025, 1:00 p.m. (local time). and the bid submission deadline to Friday, July 18, 2025, 10:00 a.m. (local time). This w ill be the last amendment for this requirement. No further questions w ill be addressed at this time.

***PLEASE ACKNOWLEDGE ALL AMENDMENTS IN YOUR BID PACKAGE SUBMISSION***

1. CONTRACT ID CODE PAGE OF PAGES

1 32

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

16C. DATE SIGNED

BY 15-Jul-2025

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 W912P825B0045

X 9B. DATED (SEE ITEM 11)

12-Jun-2025

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 X 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 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. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

15-Jul-2025

CODE

CONTRACTING DIV- CHIEF

7400 LEAKE AVENUE, ROOM 172

NEW ORLEANS LA 70118-3651

W912P8 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SECTION 01100

(1) Page 22, paragraph 20. Delete the last paragraph in its entirety and substitute the following, therefore.

“No measurement will be made for video and photographic documentation. Payment will be made at the contract job price for “Video And Photographic Documentation”.

Price and payment shall constitute full compensation for furnishing all plant, labor, materials and equipment for video and photographic documentation; including aerial photography documentation; as specified herein.”

(2) Page 23, paragraph 21. Delete this paragraph in its entirety and substitute the following, “21. AERIAL PHOTOGRAPHY DOCUMENTATION

The Contractor shall provide aerial photography documentation of the worksite and construction activities during the contract duration. Use of uncrewed aircraft (drone) to accomplish aerial photography documentation must be performed in accordance with EM 385-1-1 Chapter 33, which defines restrictions on flight safety, types of equipment and coordination/flight clearance requirements for UAS (drone) operations. At a minimum, the proposed disposal areas shall be flown three (3) times; namely: prior to initiation of excavation, at the approximate mid-point of the excavation and riprap placement operations, and upon completion of channel construction. During the mid-point flight(s), in addition to a general overview, the significant features of work (channel excavation, riprap grouting, headwall construction, etc.) shall be captured. In general, sufficient images shall be taken to thoroughly cover the project. All images must be sharp, clear, relevant and available in full JPEG format. The Contractor shall document/monitor all construction activities, before, during, and after construction using aerial photography at oblique angles. The deliverables shall be still photos that cover the extent of the contract operations. All photographs provided shall be labeled with (1) date of photography, (2) Photographic company name, and (3) Contract Number.

Photographer shall have a minimum of 3 years’ experience. The Government shall be granted unlimited use of all images without further costs. No separate measurement or payment will be made for aerial photography documentation. Payment will be included in the contract price for “Video And Photographic Documentation.”

(3) Page 26. Add the following new paragraph as shown below to the end of this section:

“27. SPECIAL CONTRACT RESTRICTIONS

Due to Right of Way limitations, the Government will issue a limited Notice to Proceed, which shall authorize the Contractor to submit all required preconstruction and safety submittals and undertake other pre-mobilization activities. Full Notice to Proceed, at which time the Contractor shall commence physical work, is expected no earlier than 1 September 2025 and no later than 31 December 2025. The contract period of performance will start once the full Notice to Proceed is issued.”

SECTION 01 50 00

Page 6, paragraph 3.3.1. Delete this paragraph in its entirety and substitute the following, “3.3.1 Maintaining Local Traffic

The Contractor shall not, through any activities, completely block access to any public roads during the construction of this contract. A minimum of one lane of traffic in each direction shall be maintained on LA Hwy 19 during the construction and site preparation for this contract.”

SUBITTAL REGISTER

Delete the Submittal Register in its entirety and substitute the attached revised Submittal Register, therefore.

SECTION 31 37 00.01 12

Delete this Section in its entirety and substitute the attached revised Section 31 37 00.01 12, DRAWINGS

SHEET IDENTIFICATION Nos. C-01, C-06, and C-08. Delete these drawings in their entirety and substitute the revised drawings SHEET IDENTIFICATION Nos. C-01, C-06, and C-08, SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 1 OF 4 PAGES

Comite River Diversion Channel Reach 3

01 32 01.00 12 SD-01 Preconstruction Submittals

1.4 GProject Scheduler Qualifications

3.4.1 GPreliminary Project Schedule

3.4.2 GInitial Project Schedule

3.6.2 GPeriodic Schedule Update

01 32 17.00 20 SD-01 Preconstruction Submittals

1.6 GQualifications

1.4 GBaseline Network Analysis

Schedule SD-11 Closeout Submittals

1.8.2 GAs-Built Schedule

01 33 00 SD-01 Preconstruction Submittals

1.7 GSubmittal Register

01 35 26 SD-01 Preconstruction Submittals

1.9 GAccident Prevention Plan (APP)

SD-06 Test Reports

1.13.2 GAccident Reports

1.13.3LHE Inspection Reports

1.6 GMonthly Exposure Reports

SD-07 Certificates

1.10 GActivity Hazard Analysis (AHA)

1.13.4Certificate of Compliance 1.14Hot Work Permit 1.15License Certificates

1.15.1 GPortable Gauge Operations

Planning Worksheet

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

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AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 2 OF 4 PAGES

01 35 26 1.15.1 GRadiography Operation Planning Work Sheet

1.13.4 GStandard Lift Plan

01 45 04.00 10 SD-01 Preconstruction Submittals

G CDContractor Quality Control Plan 01 50 00 SD-01 Preconstruction Submittals

3.1 GTraffic Control Devices Plan;

01 57 20.00 12 SD-01 Preconstruction Submittals

1.6.1 G PDR-Environmental Pollution Control

Plan

01 57 23.00 12 SD-04 Samples

2.1.1 GSilt Fence Geotextile

SD-07 Certificates

2.1.1 GSilt Fence Geotextile

01 78 02.00 10 SD-02 Shop Drawings

1.3.1 G DO'As-Built' Drawings

31 00 00 SD-01 Preconstruction Submittals

3.3 GExcavation And Stockpile

Embankment Plan SD-06 Test Reports

1.6.1Quality Control Tests 31 05 19.04 12 SD-01 Preconstruction Submittals

1.5.1Work Plan SD-04 Samples

1.5.1Geotextile SD-07 Certificates

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

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SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 3 OF 4 PAGES

31 05 19.04 12 1.5.1 GGeotextile 31 23 20.00 12 SD-01 Preconstruction Submittals

1.9.1 GUnwatering Work Plan

SD-06 Test Reports

1.9.2Daily Reports 31 37 00.01 12 SD-03 Product Data

2.5 GGrout Mixture Proportions

2.5.2 GCementitious Materials

2.4.2.3 GAggregate

2.4.2.6 GAdmixture

2.4.2.7 GAdmixture

SD-05 Design Data GGrout Placement Plan

SD-06 Test Reports GRiprap

32 92 19.04 12 SD-07 Certificates 2.1.3Seed

1.10 G DOTurf Establishment Plan

33 40 00 SD-04 Samples 2.1Pipe for Culverts and Storm

Drains SD-07 Certificates

2.2.3.1Oil Resistant Gasket 3.7.1.1Hydrostatic Test on Watertight

Joints 3.7.1.2Determination of Density

SUBMITTAL REGISTER

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SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 4 OF 4 PAGES

33 40 00 3.7.2.1.2Post-Installation Inspection Report

SUBMITTAL REGISTER

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Comite River Diversion Channel Reach 3 DED20005 Ed 20-005

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 37 00.01 12

GROUTED RIPRAP

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 MEASUREMENT AND PAYMENT

1.4 SUBMITTALS

1.5 QUALITY CONTROL

1.5.1 General

1.5.2 Reporting

1.6 MVN STANDARD TEST METHOD FOR GRADATION OF STONE

1.6.1 General

1.6.1.1 Sample Selection

1.6.1.2 Selection of Size for Separation

1.6.2 Procedure

1.7 QUALITY ASSURANCE

1.7.1 Stone

1.7.1.1 General

1.7.2 Grout for Riprap

1.7.2.1 Evaluation and Acceptance of Grout

PART 2 PRODUCTS

2.1 GEOTEXTILE

2.2 BEDDING MATERIAL

2.3 RIPRAP

2.3.1 Description

2.3.1.1 Materials

2.3.1.2 Gradation

2.3.1.3 Acceptance of Materials

2.4 GROUT MATERIALS

2.4.1 Description

2.4.2 Materials

2.4.2.1 Portland Cement

2.4.2.2 Pozzolan

2.4.2.3 Fine Aggregate

2.4.2.4 Water

2.4.2.5 Grout Fluidifier

2.4.2.6 Water-reducing or Retarding Admixtures

2.4.2.7 Air -entraining Admixture

2.4.2.8 Blended Hydraulic Cement

2.4.2.9 Accelerating Admixture

2.5 GROUT DESIGN REQUIREMENTS

2.5.1 Specified Compressive Strength

2.5.2 Maximum Water to Cementitious Materials Ratio

2.5.3 Air Content

2.5.4 Slump Flow and Visual Stability Index

SECTION 31 37 00.01 12 Page 1

2.5.5 Pozzolan Content

PART 3 EXECUTION

3.1 CONSTRUCTION REQUIREMENTS FOR RIPRAP AND GEOTEXTILE

3.2 PRODUCING,CONVEYING AND PLACING OF GROUT

3.2.1 Producing Grout

3.2.2 Preparation for Placing

3.2.3 Conveying and Placing

3.2.4 Placing Grout in Water

3.2.5 Cold-Weather Requirements

3.2.6 Hot Weather Requirements

3.3 CURING AND PROTECTION OF GROUT

3.4 TESTS AND INSPECTIONS

3.4.1 Grout

3.4.1.1 General

3.4.1.2 Preparations for Placing

3.4.1.3 Grout

3.4.1.4 Air Content

3.4.1.5 Slump Flow and Visual Stability Index

3.4.1.6 Placing

-- End of Section Table of Contents --

SECTION 31 37 00.01 12 Page 2 z

SECTION 31 37 00.01 12

GROUTED RIPRAP

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all plant, labor, equipment, and materials, and performing all operations in connection with foundation preparation and construction of grouted riprap, as shown on the drawings, and as specified.

1.2 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 C33/C33M (2024) Standard Specification for Concrete Aggregates

ASTM C94/C94M (2024d) Standard Specification for Ready-Mixed Concrete

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

ASTM C128 (2022) Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate

ASTM C150/C150M (2024) Standard Specification for Portland Cement

ASTM C171 (2020) Standard Specification for Sheet Materials for Curing Concrete

ASTM C172/C172M (2017) Standard Practice for Sampling Freshly Mixed Concrete

ASTM C231/C231M (2024) Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

ASTM C260/C260M (2010a; R 2016) Standard Specification for Air-Entraining Admixtures for Concrete

ASTM C295/C295M (2019) Standard Guide for Petrographic Examination of Aggregates for Concrete

SECTION 31 37 00.01 12 Page 3

ASTM C309 (2019) Standard Specification for Liquid Membrane-Forming Compounds for Curing Concrete

ASTM C494/C494M (2024) Standard Specification for Chemical Admixtures for Concrete

ASTM C595/C595M (2024) Standard Specification for Blended Hydraulic Cements

ASTM C618 (2023; E 2023) Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

ASTM C937 (2023) Grout Fluidifier for Preplaced-Aggregate Concrete

ASTM C939/C939M (2022) Standard Test Method for Flow of Grout for Preplaced-Aggregate Concrete (Flow Cone Method)

ASTM C942/C942M (2021) Standard Test Method for Compressive Strength of Grouts for Preplaced-Aggregate Concrete in the Laboratory

ASTM C1077 (2024) Standard Practice for Agencies Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency Evaluation

ASTM C1611/C1611M (2021) Standard Test Method for Slump Flow of Self-Consolidating Concrete

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

ASTM D4992 (2014; E 2015) Evaluation of Rock to be Used for Erosion Control

ASTM D5312/D5312M (2012; R 2013) Evaluation of Durability of Rock for Erosion Control Under Freezing and Thawing Conditions

ASTM D5313/D5313M (2012; R 2013) Evaluation of Durability of Rock for Erosion Control Under Wetting and Drying Conditions

ASTM D6825 (2021)Standard Guide for Placement of Riprap Revetments

AMERICAN CONCRETE INSTITUTE (ACI)

ACI 305R (2020) Guide to Hot Weather Concreting

U.S. ARMY CORPS OF ENGINEERS (USACE)

COE CRD-C 144 (1992) Standard Test Method for Resistance of Rock to Freezing and Thawing

SECTION 31 37 00.01 12 Page 4

COE CRD-C 148 (1969) Method of Testing Stone for Expansive Breakdown on Soaking in Ethylene Glycol

COE CRD-C 400 (1963) Requirements for Water for Use in Mixing or Curing Concrete

LOUISIANA STANDARD SPECIFICATIONS FOR ROADS AND BRIDGES (2016

Edition), LOUISIANA DEPARTMENT OF TRANSPORTATION AND DEVELOPMENT

(LADOTD)

LSSRB 1003.08 Aggregates for Portland Cement Concrete and Mortar

1.3 MEASUREMENT AND PAYMENT

Measurement for grouted riprap will be made by the cubic yard satisfactorily placed. Measurement shall be of in-place material taken subsequent to grouting and shall be limited, where applicable, to the dimensions shown on the drawings. Payment will be made at the contract unit price per cubic yard for "Grouted Riprap". Price and payment shall constitute full compensation for furnishing all plant, labor, materials and equipment and performing the grouted riprap construction, including any necessary repairs, and other incidental work; all as specified herein and as shown on the drawings.

1.4 SUBMITTALS

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

submittals not having a "G" designation are for information only. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-03 Product Data

Grout Mixture Proportions; G

Grout mixture proportions shall be determined by the Contractor and submitted for approval. The grout mixture quantities of all ingredients per cubic yard that will be used in the manufacture of the grout shall be stated. Proportions shall indicate the mass of cement, pozzolan and water; the mass of aggregate in a saturated surface-dry condition; and the quantities of admixtures. The submission shall be accompanied by test reports from a laboratory complying with ASTM C1077, which show that proportions thus selected will produce grout of the qualities specified. Test reports shall be from tests performed on grout produced from the submitted mixture proportions. Compressive strength of grout shall be determined in accordance with ASTM C942/C942M. Grout flow or slump flow and air content test results shall also be submitted.

No substitution shall be made in the source or type of materials used in the work without additional tests to show that the quality of the new materials and grout are satisfactory.

Cementitious Materials; G

Cementitious materials will be accepted on the basis of the manufacturer's certification of compliance, accompanied by mill test reports, stating that materials meet the requirements of the

SECTION 31 37 00.01 12 Page 5 specification under which they are furnished. Certification and mill test reports shall be from samples taken from current production and be representative of the particular lot furnished.

Aggregate; G

Information identifying the aggregate source to be used along with gradation tests for fine aggregates shall be submitted for approval. Specific gravity and absorption of fine aggregates as determined by ASTM C128 shall also be submitted.

Admixture; G

All admixtures shall be certified for compliance with the specification requirements or manufacturer's literature which demonstrates compliance with these specifications shall be submitted.

SD-05 Design Data

Grout Placement Plan; G

Submit the methods and equipment for transporting, handling, and depositing the grout prior to first grout placement. The plan shall include all placing equipment and methods to be used. It shall address where the grout placement will start and the progression of the placement up the slope, the anticipated placement rate and any end berms required to contain the grout.

Consideration should be given to the flow of the grout and the set time of the grout mix. Curing materials and methods shall be included. Include a drawing or sketch showing layout of all equipment, access for grout delivery and progression of planned grout placement. Grout shall not be placed in water without approval. Submit underwater placement methods with the Grout Placement Plan.

SD-06 Test Reports

Riprap; G

Submit the source for the materials used in riprap. Submit quality test reports. Submit gradation test reports.

1.5 QUALITY CONTROL

1.5.1 General

The Contractor shall inspect all materials before they are incorporated into the work for compliance with contract requirements and any material found to be defective will be rejected. All information pertaining to the inspection shall be recorded and included in quality control reports furnished the Contracting Officer. The Contractor shall establish and maintain quality control for construction operations to assure compliance with contract requirements, and maintain records of his/her quality control for all construction operations. The quality control reports shall include, but not be limited to, the following:

(1) Equipment. Type, size, and suitability for construction of the prescribed work.

SECTION 31 37 00.01 12 Page 6

(2) Submission of riprap samples for quality testing, if from other than the listed sources, as specified in paragraph "Materials".

(3) Quality of riprap meets the requirements specified.

(4) Quantity of riprap delivered and placed each day.

(5) Gradation of Riprap. Gradation tests of riprap shall be accomplished at the quarry. Tests by weight shall be made by the Contractor in the presence of the Contracting Officer's representative. The Contractor shall notify the Contracting Officer not less than 3 working days in advance of each test. In the event of non-availability of the Government representative, the Contractor shall perform the tests and certify to the Contracting Officer that the riprap shipped complies with the specifications. A minimum of one test shall be performed for each 25,000 tons, or fraction thereof, of riprap supplied to the Government from each source. Each test sample shall not be less than 15 tons and shall be representative of the riprap being shipped. Percentage determinations shall be made for each riprap weight specified. Gradation test data shall be recorded on MVN form 602-R "Gradation Test Data Sheet", a copy of which is shown at the end of this section. Failure of the test on the initial sample and on an additional sample will be considered cause for rejection of the quarry and/or quarry process, and all riprap represented by the failed tests shall be set aside and not incorporated into the work. Any additional tests required because of the failure of an initial test sample will not be considered as one of the other required tests. Certification and test results shall represent riprap shipped from the quarry and must be received by the Government representative before the riprap is used in the work. The Contractor shall designate on the test form that portion (in tons) of the lot tested which is applicable to this contract. Any deviation from the reported tonnage shall be corrected on a revised gradation test form. The Contracting Officer may direct, under Section 00700 INSPECTION FOR CONSTRUCTION (FAR 52.246-12), additional testing of riprap furnished to the worksite if the riprap appears, by visual inspection, to be of questionable gradation or quality. Refer to paragraph MVN STANDARD TEST METHOD FOR GRADATION OF STONE for the gradation test method.

(6) Compliance Surveys. Upon completion of suitable reaches of erosion protection, the Contractor shall perform, plot and submit compliance cross section surveys at a maximum of 50 feet intervals, showing transitions and breakpoints. All sections shall be taken at locations corresponding to the Government original survey. They shall be plotted by the Contractor on a minimum scale of 1 inch equals 10 feet horizontally and 1 inch equals 5 feet vertically with the theoretical design cross section and allowable grade tolerances superimposed thereon.

(7) Grout. Grout will be sampled in accordance with ASTM C172/C172M.

Grout flow and air content will be determined in accordance with ASTM C939/C939M and ASTM C231/C231M, respectively, when cubes are molded. Compression test specimens will be made, cured, and transported in accordance with ASTM C942/C942M. Compression test specimens will be tested in accordance with ASTM C942/C942M. Samples for strength tests will be taken not less than once each shift in which grout is produced. A minimum of 3 specimens will be made from each sample; 1 will be tested at 7 days for information and 2 will be tested

SECTION 31 37 00.01 12 Page 7 at 28 days for acceptance.

1.5.2 Reporting

The original and two copies of these records, as well as the records of corrective action taken, shall be furnished the Government daily. Format of report shall be as prescribed in Section 01 45 04.00 10 CONTRACTOR

QUALITY CONTROL.

1.6 MVN STANDARD TEST METHOD FOR GRADATION OF STONE

1.6.1 General

1.6.1.1 Sample Selection

The most important part of the test and the least precise is the selection of a representative sample. No "standard" can be devised; larger quarry run stone is best sampled at the shot or muck pile by given direction to the loader; small graded stone is best sampled by random selection from the transporting vehicles. If possible, all parties should take part in the sample selection, and agree before the sample is run, that the sample is representative.

1.6.1.2 Selection of Size for Separation

It is quite possible and accurate to run a gradation using any convenient sizes for separation, without reference to specifications. After the test is plotted on a curve, then the gradation limits may be plotted.

Overlapping gradations with this method are no problem. It is usually more convenient, however, to select points from the gradation limit, such as the minimum 50 percent size, the minimum 15 percent size, and one or two others, as separate points.

1.6.2 Procedure

(1) Select a representative sample (See paragraph "Sample Selection"), weigh and dump on hard stand.

(2) Select specific sizes (see example) on which to run "individual weight larger than" test. Procedure is similar to the standard aggregate gradation test for "individual weight retained".

(3) Determine the largest size stone in the sample. (100 percent size)

(4) Separate by "size larger than" the selected weights, starting with the larger sizes. Use reference stones, with identified weights, for visual comparison in separating the obviously "larger than" stones.

Stones that appear close to the specific weight must be individually weighed to determine size grouping. Weigh each size group, either individually or cumulatively.

(5) Subparagraph (4) will result in "individual weight retained" figures. Calculate individual percent retained. Fill-in and document the test on MVN Form 602-R.

EXAMPLE SPECIFIED GRADATION

STONE WEIGHT IN LBS INDIVIDUAL PERCENT RETAINED

75 - 125 0 - 10

SECTION 31 37 00.01 12 Page 8

25 - 74 40 - 60 6 - 24 20 - 40 0 - 6 0 - 15

EXAMPLE WORKSHEET

STONE WEIGHT INDIVIDUAL INDIVIDUAL SPECIFIED

IN LBS. WEIGHT IN PERCENT INDIVIDUAL

POUNDS RETAINED PERCENT

RETAINED

Greater than 125 0 0 0 75 - 125 2,600 8 0 - 10 25 - 74 16,200 51 40 - 60 6 - 24 10,000 31 20 - 40 0 - 6 3,200 10 0 - 15

TOTAL 32,000 lbs.

NOTE: Largest stone 125 lbs

1.7 QUALITY ASSURANCE

1.7.1 Stone1.7.1.1 General

All stone shall be durable material as approved by the Contracting Officer or designated representative. Stone shall be of a suitable quality to ensure permanence in the structure and in the climate 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. Inspections for cracks, fractures, seams and defects shall be made by visual examination. If, by visual examination, it is determined that 20 percent or more of the stone produced contains hairline cracks, then all stone produced by the means and measures which caused the fractures shall be rejected. A hairline crack that is defined as being detrimental shall have a minimum width of 4 mil and shall be continuous for one-third the dimension of at least two sides of the stone. The stone shall be clean and adequately free from all foreign matter. Any foreign material adhering to or combined with the stone as a result of stockpiling shall be removed prior to placement.

1.7.2 Grout for Riprap

The Government reserves the right to sample and test the aggregates and grout to determine compliance with the specifications. Provide facilities and labor as may be necessary to assist the Government in procurement of representative test samples. Samples of aggregates will be obtained at the point of batching in accordance with ASTM D75/D75M. Grout will be sampled in accordance with ASTM C172/C172M. The grout flow or slump flow and air content will be determined when cylinders are molded in accordance with ASTM C939/C939M or ASTM C1611/C1611M1 and ASTM C231/C231M, respectively.

Compression test specimens will be made, cured and transported in accordance with ASTM C942/C942M. Compression test specimens will be tested in accordance with ASTM C942/C942M. Samples for strength tests will be taken not less than once each shift in which grout is produced. A minimum of three specimens will be made from each sample, two will be tested at 28 days (56 days if pozzolan is used) for acceptance and one will be tested at 7 days for information.

SECTION 31 37 00.01 12 Page 9

1.7.2.1 Evaluation and Acceptance of Grout

The acceptance test results will be the average of the strengths of the two specimens tested at 28 days (56 days if pozzolan is used). The strength of the concrete grout will be considered satisfactory so long as the average of all sets of three consecutive acceptance test results equal or exceed the specified compressive strength f'c and no individual acceptance test result falls below the specified strength f'c by more than 500 pounds per square inch. There shall be a minimum of 5 sets of acceptance test for this contract.

PART 2 PRODUCTS

2.1 GEOTEXTILE

Geotextile fabric shall be in accordance with Section 31 05 19.04 12

SEPARATOR GEOTEXTILE.

2.2 BEDDING MATERIAL

Bedding material shall be in accordance with Section 35 31 19.04 12 RIPRAP

AND BEDDING CONSTRUCTION.

2.3 RIPRAP

2.3.1 Description

This work consists of furnishing and placing stone (riprap) which will be grouted. The riprap shall be placed at the locations, thicknesses, and lines and grades shown on the drawings or as directed. The riprap shall have a minimum thickness of 24 inches. Riprap shall be R-650, as shown in Table 1.

2.3.1.1 Materials

Riprap shall be from a source listed in Section 01100 GENERAL PROVISIONS paragraph STONE SOURCES. All riprap (stone) shall be of a hard, durable quality such as will not disintegrate under the elements or be easily broken in handling. It shall be clean and free from earth, dust, or other refuse. The faces of individual pieces of stone shall be roughly angular, not rounded, in shape. Field stone will not be accepted. Stone shall be obtained in accordance with the General Provision entitled STONE SOURCES (see Section 01100 GENERAL PROVISIONS). If the Contractor proposes to furnish stone from a source not listed in STONE SOURCES, have evaluation tests performed on stone samples collected from the proposed source.

Perform quarry investigation by a registered geologist or registered engineer. Subject the stone to tests which include petrographic examination (ASTM C295/C295M), bulk specific gravity (SSD),unit weight, absorption (ASTM C127), resistance of stone to freezing and thawing ( COE CRD-C 144 or ASTM D5312/D5312M), and if argillaceous limestone and sandstone are used, resistance to wetting and drying (ASTM D5313/D5313M).

Use laboratory to perform the required testing that is validated based on relevant paragraphs of ASTM D 3740, and no work requiring testing is permitted until the laboratory has been inspected and validated. A copy of the documents, provided by the Materials Testing Center (MTC) at CEWES or other Governmental agency, that validates that the laboratory can perform the required tests. List individual tests for which the validation covers along with the date of the inspection. The first inspection of the facilities is the expense of the Government and any subsequent inspections

SECTION 31 37 00.01 12 Page 10 required because of failure of the first inspection shall be at the expense of the Contractor.

a. Unit Weight and Absorption. Stone must weigh more than 155 pounds per cubic foot, have a bulk specific gravity, saturated surface dry, greater than 2.48. Provide stone with an absorption less than 2 percent unless other tests and service records show that the stone is satisfactory. The method of test for unit weight and absorption shall be in accordance with the requirements ofASTM C127.

b. Petrographic Examination. Evaluate stone in accordance with ASTM C295/C295M which includes information required by ASTM D4992, paragraph 10. Use COE CRD-C 148 to perform Ethylene glycol tests required on rocks containing smectite as specified in ASTM D4992 and on samples identified to contain swelling clays.

c. Resistance to Freezing and Thawing. Use stone with a maximum loss of 10 percent after the number of cycles specified in ASTM D5312/D5312M Figure 1, when determining the durability of stone when subjected to freezing and thawing in accordance with COE CRD-C 144 or ASTM D5312/D5312M, except the surface area of one side of the sample must be between 144 and 2304 square inches.

d. Resistance of Rock to Wetting and Drying. Use stone with a maximum loss of 1 percent when determining the durability of stone when subject to wetting and drying in accordance with ASTM D5313/D5313M, except the surface area of one side of the sample must be between 144 and 2304 square inches.

e. Samples. Take samples of stone from a source not listed in Section 01100 by a representative of the quarry under the supervision of the Contracting Officer for testing and acceptance prior to delivery of any stone from this source to the site of the work. Include the location within the quarry from which the sample was taken along with a field examination of the quarry. Include the information outline in ASTM D4992, paragraph 7, in the field examination. Samples consist of at least three pieces of stone, roughly cubical in shape and weighing no less than 150 pounds each from each unit that is used in the production of the required stone. If the source is an undeveloped quarry, or if the operation has been dormant for more than one year such that fresh samples are not available, expose fresh rock for 20 feet horizontally and for the full height of the face proposed for production, prior to the field evaluation. The Contracting Officer may also require documentation of subsurface exploration of an undeveloped quarry in order to determine whether or not sufficient reserves are available. Ship samples at the Contractor's expense to a laboratory validated by the Government to perform the required tests.

f. Tests. Conduct the tests in accordance with applicable ASTM and Corps of Engineers methods of tests, given in the Handbook for Concrete and Cement, in a laboratory validated by the Government. The cost of testing shall be borne by the Contractor.

2.3.1.2 Gradation

Riprap: Riprap shall be reasonably well graded and shall comply with Table

1. Recycled portland cement concrete may not be used in these riprap classes.

SECTION 31 37 00.01 12 Page 11

TABLE 1

(RIPRAP "R-650")

PERCENT LIGHTER LIMITS OF STONE

BY WEIGHT (SSD) WEIGHT, LB.

100 650 - 260 50 280 - 130 15 130 - 40

2.3.1.3 Acceptance of Materials

Acceptance of a source of stone is not to be construed as acceptance of all material from that source. The right is reserved to reject materials from certain localized areas, zones, strata, or channels, when such materials are unsuitable for stone as determined by the Contracting Officer. The Contracting Officer also reserves the right to reject individual units of produced specified materials in stockpiles at the quarry, all transfer points, and at the project construction site when such materials are determined to be unsuitable. During the contract period, both prior to and after materials are delivered to the job site, visual inspections and measurements of the stone materials may be performed by the Contracting Officer. If the Contracting Officer, during the inspections, finds that the stone quality, gradation or weights of stone being furnished are not as specified or are questionable, re-sampling and re-testing is required.

Sampling of the delivered stone for testing and the manner in which the testing is to be performed must be as directed by the Contracting Officer.

The Contractor shall perform this additional sampling and testing at the Contractor's expense when test results indicate that the materials do not meet specified requirements. When test results indicate that materials meet specified requirements, an equitable adjustment in the contract price will be made for the sampling and testing. The Contractor shall remove and dispose of any rejected material; as specified herein, at his/her own.

2.4 GROUT MATERIALS

2.4.1 Description

This work consists of furnishing, placing, and consolidating grout for placement on riprap - grouted as specified herein and as shown on the drawings, and as directed by the Contracting Officer's representative.

2.4.2 Materials

Materials shall comply with the following:

2.4.2.1 Portland Cement

Portland cement used in grout shall conform to the requirements of ASTM C150/C150M, Type I or II, low alkali, except that the maximum amount of C3A in Type I cement shall be 10 percent and cement with a Blaine Fineness of 400 square meters per kilogram or greater shall be considered Type III cement.

2.4.2.2 Pozzolan

Pozzolan shall be fly ash conforming to ASTM C618.

SECTION 31 37 00.01 12 Page 12

2.4.2.3 Fine Aggregate

The quality of fine aggregate shall conform to ASTM C33/C33M, except only natural sands shall be used. Fine aggregate shall conform to the grading requirements of LSSRB 1003.08 for concrete or mortar sand or ASTM C33/C33M.

2.4.2.4 Water

The water used in the grout shall be fresh, clean, potable, and free from injurious amounts of oil, acid, alkali, salts, sugar, or organic matter, except that nonpotable water may be used if it meets the requirements of

COE CRD-C 400.

2.4.2.5 Grout Fluidifier

Grout fluidifier shall conform to ASTM C937.

2.4.2.6 Water-reducing or Retarding Admixtures

Water-Reducing or Retarding Admixtures shall conform to ASTM C494/C494M, Type A, B, or D, except that the 6-month and 1-year compressive strength tests are waived.

2.4.2.7 Air -entraining Admixture

The air-entraining admixture shall conform to ASTM C260/C260M and shall consistently cause the grout to have an air content in the specified range under field conditions.

2.4.2.8 Blended Hydraulic Cement

Portland-Limestone cement shall conform to ASTM C595/C595M, Type IL.

Blended hydraulic cement shall meet the mortar expansion limits found in Table 2 of ASTM C595/C595M. Admixture additions shall not be included in the blended cement. The Equivalent Alkali content shall not exceed 0.06 percent.

2.4.2.9 Accelerating Admixture

Accelerating admixture shall conform to ASTM C494/C494M, Type C.

2.5 GROUT DESIGN REQUIREMENTS

Grout mixture proportions shall be determined by the Contractor and submitted for approval. Grout shall be composed of water, cementitious materials, air entraining admixture, water reducers, fluidifiers, and fine aggregate. A retarder may be used.

2.5.1 Specified Compressive Strength

The specified compressive strength shall be 3000 psi at 28 days.

2.5.2 Maximum Water to Cementitious Materials Ratio

The maximum water to cementitious materials ratio (W/CM) shall be 0.60.

SECTION 31 37 00.01 12 Page 13

2.5.3 Air Content

Air content of the grout mixture as determined by ASTM C231/C231M shall be in the range of 5 to 10 percent.

2.5.4 Slump Flow and Visual Stability Index

Slump flow shall be 17 inches plus or minus 2 inches and the Visual Stability Index (VSI) shall be 0 to 1 when tested in accordance with

ASTM C939/C939M.

2.5.5 Pozzolan Content

If pozzolan is used, the minimum pozzolan content shall be 15 percent by weight of the total cementitious materials.

PART 3 EXECUTION

3.1 CONSTRUCTION REQUIREMENTS FOR RIPRAP AND GEOTEXTILE

(a) Geotextile Fabric: Geotextile fabric shall be placed on the prepared surface area or slope in accordance with Section 31 05 19.04 12 SEPARATOR GEOTEXTILE before placement of riprap. Care shall be taken not to damage the geotextile fabric when placing riprap. Placing riprap by rolling riprap down slope, or dropping riprap from a height greater than 1 foot from the bucket to the placement surface as required by ASTM D6825, or by similar methods likely to damage geotextile fabric, will not be permitted. Damaged geotextile fabric shall be repaired or replaced as directed by the Contracting Officer.

(b) Bedding Material: Areas on which bedding material and riprap is to be placed shall be graded to the required section. The bedding material shall be placed at the locations, thicknesses, and lines and grades shown on the drawings or as directed. The bedding material shall have a minimum thickness of 6 inches. It shall be placed on the prepared slope or area in a manner which will produce a reasonably well-graded mass of stone with a minimum practicable percentage of voids.

(c) Riprap: Areas on which riprap is to be placed shall be graded to the required section. Riprap shall be "R-650". The riprap shall be placed at the locations, thicknesses, and lines and grades shown on the drawings or as directed by the Contracting Officer's representative.

The riprap shall have a minimum thickness of 24 inches. It shall be placed on the prepared slope or area in a manner which will produce a reasonably well-graded mass of stone with a minimum practicable percentage of voids. The entire mass of stone shall be placed in one operation to conform to the lines, grades, and thickness to avoid displacing underlying material. Placing of riprap in layers, or dumping into chutes, or by similar methods likely to cause segregation, will not be permitted.

3.2 PRODUCING,CONVEYING AND PLACING OF GROUT

3.2.1 Producing Grout

The batching and mixing equipment shall provide sufficient capacity to prevent cold joints. Materials shall be stockpiled and batched by methods that will prevent segregation or contamination of aggregates and insure

SECTION 31 37 00.01 12 Page 14 accurate proportioning of the ingredients of the mixture. No mixing water in excess of the amount required by the approved mix shall be added to the grout mixture during mixing, hauling, or after arrival at the delivery point, except as approved. Grout shall be produced by a ready-mix facility and shall conform to ASTM C94/C94Mexcept as otherwise specified.

3.2.2 Preparation for Placing

Before placement, temporary end-dams or soil berms shall be placed as directed by the Contracting Officer's Representative to confine the grout.

The rock shall be flushed with water to remove the fines from the rock prior to placing the grout. The rock shall be kept moist just ahead of the actual placing, but no flowing or standing water shall be present during the grout operation. Snow and ice shall be removed. All equipment needed to place, protect, and cure the grout shall be at the placement site and in good operating condition. The entire preparation shall be accepted by the Contracting Office prior to placing the grout.

3.2.3 Conveying and Placing

Grout placement will not be permitted when weather conditions prevent proper placement. Submit the methods and equipment for transporting, handling, depositing, and consolidating the grout prior to the first grout placement. The grout mixture shall not be placed until the riprap has been inspected and approved. Grout shall be in place within 15 minutes after discharge from the mixer. When the grout is mixed and/or transported by a truck mixer, the grout shall be delivered to the site of the work and discharge shall be completed within 1-1/2 hours after introduction of the cement to the aggregate and water unless the slump flow is tested and the Contracting Officer's representative determines that the grout can still be placed. When the air temperature is 85 degrees F (or greater) or under conditions contributing to quick stiffening of the grout, an approved set-retarding admixture may be used. Grout shall be deposited as close as possible to its final position by methods that will prevent segregation of the aggregates or loss of mortar and in no case shall grout be dropped more than 5 feet vertically. The grout shall not be placed in standing or flowing water unless approved by the Contracting Officer. Grout placed on inverts or other nearly level areas may be placed in one course. On slopes, the grout shall be placed starting at the toe of the slope, starting on one end and proceeding horizontally until reaching the opposite end then returning to the starting end and proceeding up and across again in a logical progression up the slope. The grout shall be delivered to the place of final deposit and discharged directly on the surface of the riprap. The pump pressure shall be so regulated that the grout does not cause displacement of the riprap. If the Contracting Officer's representative determines that excessive displacement of riprap occurs, a splash plate of metal or wood shall be used to prevent displacement of the rock directly under the discharge. If necessary, the flow of grout shall be directed with brooms, spades or baffles to prevent it from flowing excessively along the same path and to assure that all intermittent spaces are filled. Sufficient barring shall be done to loosen tight pockets of riprap and otherwise aid the penetration of grout so that all voids shall be filled and the grout fully penetrates the riprap from the base of the riprap layer to at least two-thirds of the thickness of the stone layer. All brooming on slopes shall be uphill and after the grout has stiffened.

3.2.4 Placing Grout in Water

If placing grout in water is approved by the Contracting Officer, it shall

SECTION 31 37 00.01 12 Page 15 be done in accordance with the methods submitted to and approved by the Contracting Officer. Grout shall not be discharged to free fall into water.

One end of the placement should be dammed off to prevent flow. The placement should start on the dammed end. The discharge shall be placed in the water as near the bottom as possible. Once discharge starts, it shall be held stationary in the grout and the grout allowed to build up and flow from the discharge, displacing the water as it continues to flow. Once the grout builds to the desired elevation the discharge may be moved horizontally and be placed back into the grout to continue discharge. This shall continue until the placement is complete.

3.2.5 Cold-Weather Requirements

No grout placement shall be made when the ambient temperature is below 35 degrees F, nor if the ambient temperature is below 40 degrees F and falling. Suitable covering and other means, as approved, shall be provided for maintaining the grout at a temperature of at least 50 degrees F for not less than 72 hours after placing and at a temperature above freezing for the remainder of the curing period. The temperature of riprap shall be at least 40 degrees F prior to placing the grout. Salt, chemicals, or other foreign materials shall not be mixed with the grout to prevent freezing.

Any grout damaged by freezing shall be removed and replaced at the expense of the Contractor.

3.2.6 Hot Weather Requirements

When the rate of evaporation of surface moisture, as determined by use of Figure 4.1.4 of ACI 305R, is expected to exceed 0.2 pounds per square foot per hour, provisions for windbreaks, shading, fog spraying, or wet covering with a light-colored material shall be made in advance of placement, and such protective measures shall be taken as quickly as finishing operations will allow.

3.3 CURING AND PROTECTION OF GROUT

Beginning immediately after placement and continuing for at least 7 days, all grout shall be cured and protected from premature drying, extremes in temperature, rapid temperature change, freezing, mechanical damage, and exposure to rain or flowing water. All materials and equipment needed for adequate curing and protection shall be available and at the site of the placement prior to the start of grout placement. After completion of any strip or panel, no workman or other load shall be permitted on the grouted surface for a period of twenty-four (24) hours. Exposed surfaces shall be kept continuously moist for the entire period, or until curing compound is applied. Preservation of moisture for grout surfaces shall be accomplished by one of the following methods:

a. Continuous sprinkling and ponding.

b. Application of absorptive mats or fabrics kept continuously wet.

c. Application of impervious sheet material conforming to ASTM C171.

d. Application of membrane-forming curing compound conforming to ASTM C309. The compound shall be sprayed on the moist surface as soon as free water has disappeared but shall not be applied to any surface until finishing of that surface is completed.