AMENDMENT 0003 15 MILE BAYOU ITEM 3.pdf

US Army Corps of Engineers Memphis District

Invitation for Bids

Amendment 0003

15 MILE BAYOU CHANNEL ENLARGEMENT -

ITEM 3

at Crittenden County, Arkansas

Firm-Fixed Price

8(a) Competitive Small-Business Set-Aside

W912EQ24B0010

JULY 2024

W912EQ24B0010

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 purpose of this Amendment is to update Specification and Plans:

1. Specifications: REVISE: 3.4.1 STEEL PIPE. (33 40 00 STORMWATER UTILITIES)

REMOVE: 3.6.1 TESTS. (33 40 00 STORMWATER UTILITIES)

2. Plans: REMOVE AND REPLACE: C-502 CULVERT AND RIPRAP DETAILS

REMOVE AND REPLACE: C-503 INLET STRUCTURE DETAILS

All other Terms and Conditions remain unchanged.

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 W912EQ24B0010

X 9B. DATED (SEE ITEM 11)

08-Jul-2024

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.

U0003

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

30-Jul-2024

CODE

US ARMY ENGINEER DISTRICT, MEMPHIS

KIMBERLY BASS 167 N. MAIN ST

MEMPHIS TN 38103-1894

W912EQ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EQ24B0010

3. Bid Opening Information. (Section 00 21 13)

4. Please Note: Bids are due on 6 August 2024 at 12pm CDT. The official bid opening will start at 1:00pm CDT on 6 August 2024.

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

The following have been added by full text:

15-MILE BAYOU- ITEM NO.3

DESCRIPTION OF CHANGES

SPECIFICATION. 33 40 00 STORMWATER UTILITIES

a. REVISE: 3.4.1 STEEL PIPE.

a. Remove requirements regarding cement lining and tape wrap application.

SPECIFICATION. 33 40 00 STORMWATER UTILITIES

a. REMOVE: 3.6.1 TESTS.

a. Remove testing requirements from pipe installation.

b. Remove Low Impact Development Testing.

c. Remove repair of defects related to leakage and deflection tests.

PLAN. C-502 CULVERT AND RIPRAP DETAILS

a. REMOVE AND REPLACE: C-502 CULVERT AND RIPRAP DETAILS

PLAN. C-503 INLET STRUCTURE DETAILS

a. REMOVE AND REPLACE: C-503 INLET STRUCTURE DETAILS

SECTION 00 21 13 - INSTRUCTIONS TO BIDDERS

The following have been modified:

CONDITIONS AND NOTICES TO BIDDERS

INSTRUCTIONS, CONDITIONS, AND NOTICES TO BIDDERS

AMENDMENT 0003

A. BIDDING MATERIAL - Copies of the Solicitation, Specifications, and drawings forms are available by INTERNET ACCESS ONLY. All solicitation documents will be posted through https://piee.eb.mil. Prospective bidder should submit technical questions concerning this Invitation for Bid via Bidder Inquiry in ProjNet at www.projnet.org/projnet. (See Paragraph N Below). All other inquiries should be emailed to the Contract Specialist at Kimberly.e.bass@usace.army.mil.

The Government contemplates award of one contract to the responsible bidder who submits the lowest priced bid responsive to this invitation for bids. As a matter of responsibility, the awardee shall meet the special standards identified in paragraph K.

BID DOCUMENTS: The following documents must be submitted with a bid:

1. SF 1442, Solicitation, Offer and Award

2. Schedule of bid/prices

3. Representations and Certifications (Section 00 45 00)

4. All amendments must be acknowledged

5. Financial Statements (Balance Sheet and Income Statement). Provide a copy of the latest financial statement. If the financial statements are older than one year, furnish a statement as to the current financial status of the company.

6. Equipment list

B. REQUIRED SYSTEM FOR AWARD MANAGEMENT REGISTRATION – By submission of a bid, the bidders acknowledge the requirement that prospective awardees must be registered in the System for Award Management (SAM) database prior to award, during performance, and through final payment of any contract resulting from this quote. Lack of registration in the SAM database will make a bidder ineligible for award.

Contractors may obtain information on registration and annual confirmation requirements by calling 1-888-227- 2423, or at: https://www.sam.gov.

(1) Lack of registration in the SAM.gov database will make a bidder ineligible for award. SEE CONTRACT CLAUSE 52.204-7 ENTITLED "System for Award Management".

(2) This requirement now applies to both new and existing entities. Make sure your SAM profile includes "all awards" and not just "Federal Assistance Awards" as this option is only for grants and cooperative agreements. Please visit https://sam.gov for more information.

C. BASIS FOR AWARD: An award will be made with reasonable promptness to that responsible bidder whose bid, conforming to the invitation for bids, will be most advantageous to the Government, considering only price and the price-related factors included in the invitation.

D. BIDDER’S QUALIFICATIONS – To establish its responsibility, bidders may be requested by the Government to submit a statement regarding his previous experience in performing comparable work, his business and technical organization, financial resources (including recent financial statements or audits), plant available to be used in performing the work and, if applicable, an approved sub-contracting plan in accordance with FAR 9.104-1.

All documents relevant to establish a bidder’s responsibility shall be made available as soon as practicable after receiving bid; but not later than 3 days after request by the Contracting Officer or the authorized Representative of the Contracting Officer. The Government may perform a price realism analysis as a part of its fair and reasonable price determination. A price realism analysis may also be used the Bidder can realistically perform the requirements at the fixed price proposed, and to assess the risk to the Government inherent in the bid.

PLEASE NOTE: This solicitation requires offerors to enter a National Institute of Standards and Technology (NIST) score in the Supplier Performance Risk System (SPRS) prior to responding to this solicitation. The NIST score is a responsiveness item. Bids/offers from contractors with a NIST score in SPRS will be considered responsive and evaluated/considered for award. Those without a NIST score in SPRS will be deemed NON-RESPONSIVE and thus not evaluated/considered for award.

E. SITE VISITS - There will be an organized site visits prior to the public opening of bids. Bidders should inspect the site where the work will be performed. Site Visits may be coordinated by email or telephone (COLLECT CALLS NOT ACCEPTED) between the hours of 7:30 AM and 3:00 PM, exclusive of Federal Holidays. The point of contact for the organized site visit for this Invitation for Bid is Jason Britt, Wynne Area Engineer, at 870-238-7983 or e-mail jason.w.britt@usace,army.mil. See Section 00 21 00, clause 52.236-27 Alt I, entitled "Site Visit (Construction)" for the additional site visit information.

F. CONDITIONS AFFECTING THE WORK - Bidders should visit the site and take such other steps as may be reasonably necessary to ascertain the nature and location of the work and the general and local conditions that can affect the work or the cost thereof. Failure to do so will not relieve offeror from the responsibility for estimating properly the difficulty or cost of successfully performing the work. The Government will assume no responsibility for any understanding or representations concerning conditions made by any of its officers or agents prior to the execution of the contract, unless included in the Invitation for Bid, the specifications, or related documents. See Section 00 72 00, clause 52.236-3, entitled "Site Investigation and Conditions Affecting the Work".

G. DIRECTIONS FOR SUBMITTING BIDS - Vendors seeking to do business with the Memphis District must complete a vendor registration on https://piee.eb.mil/, as you will be required to submit bids through the PIEE Solicitation Module. Please note that it is imperative that the e-mail address you used to register in SAM.GOV MUST be the same e-mail address used to register in PIEE. Identify the Solicitation Number W912EQ24B0010 and Project Title "15 Mile Bayou Item No. 3 Crittenden County, Arkansas". There are 10 general steps a vendor must follow to register and use PIEE application modules. A complete list can be viewed at the following site: https://piee.eb.mil/ xhtml/unauth/web/homepage/vendorGettingStartedHelp.xhtml#stepl

H. BID OPENING - Bid opening details will be added via amendment to the solicitation 7 days prior to bid opening. (AMD0003) Date: 6 August 2024 Time: 1:00pm CDT Webex Information:

Meeting link: https://usace1.webex.com/meet/monica.a.moody Meeting number: 1999 12 9464

Join from a video conferencing system or application Dial: monica.a.moody@usace1.webex.com You can also dial 207.182.190.20 and enter your meeting number. (1999 12 9464)

Join by phone 1-669-234-1177 US Toll 1-844-800-2712 US Toll Free Access Code: 1999 12 9464

Global call-in numbers https://usace1.webex.com/usace1/globalcallin.php?MTID=m860fa27a78d4b3ecb3d8c6d6a3170604

Toll-free calling restrictions https://usace1.webex.com/usace1/customer_tollfree_restrictions.pdf

I. BIDDER'S ADDRESS - Prospective bidders should indicate in the bid, the address to which payment and/or correspondence should be mailed, if such address is different from that shown for the bidder on Standard Form 1442 Block 14.

J. AMENDMENTS PRIOR TO DATE SET FOR OPENING BIDS -The right is reserved as the interest of the Government may require, to revise or modify the specifications or drawings or both prior to the date set for receiving Invitation for Bid. Such revisions and amendments, if any, will be announced by an amendment or modifications to this Invitation for Bid. If the revisions and modifications are of a nature which requires material changes in quantities or prices or both, the date set for Invitation for Bid may be postponed by such number of days as in the opinion of the issuing officer will enable bidders to revise their bid. In such cases, the amendment will include an announcement of the new date for bids.

K. NOTICE TO BIDDERS - NINETY DAY OFFER GUARANTEE (See SF 1442 Block 13)

L. EXPLANATION OF PROVISION/CLAUSE NUMBERS UTILIZED IN THIS SOLICITATION

1. Federal Acquisition Regulation (FAR) provisions/clauses are numbered as follows: 52.252-1.

2. Defense Acquisition Regulation Supplement (DFARS) provisions/clauses are numbered as follows: 252.204-7000.

M. NOTICE OF BONDS AND INSURANCE - The following bid/contract information is applicable only if the bid/contract is over one hundred fifty thousand dollars ($150,000):

(1). BID BONDS: This is applicable only if bid is over one hundred fifty thousand dollars ($150,000).

Each bidder shall submit with his bid a Bid Bond (Standard Form 24, REV 8/2016) with good and sufficient surety or sureties acceptable to the Government in the form of twenty percent (20%) of the bid price or three million dollars ($3,000,000) whichever is lesser. The bid bond penalty may be expressed in terms of a percentage or may be expressed in dollars and cents. See Section 00 72 00, clause 52.228-1, entitled "Bid Guarantee".

(2). PERFORMANCE BONDS: The penal amount of the performance bond shall equal one hundred percent (100%) of the contract price. Bonds shall be received within ten (10) days after receipt of contract award.

See Section 00 72 00, clause 52.228-15, entitled "Performance and Payment Bonds - Construction".

(3). PAYMENT BONDS: Within ten (10) days after receipt of contract award to the bidder whom award is made, one (1) bond, with good and sufficient surety or sureties acceptable to the Government, shall be furnished;

namely a Payment Bond (Standard Form25A, REV 8/2016). The penal amount of such bonds shall equal one hundred percent (100%) of the contract price. See Section 00 72 00, clause 52.228-15, entitled "Performance and Payment Bonds - Construction".

(4). INSURANCE: The accepted bidder shall provide adequate insurance, within ten (10) days after receipt of contract award. See Section 00 73 00, entitled Insurance Requirements and Section 00 73 00, Special Contract Requirements --- Additional Insurance References.

N. POST AWARD SUBMITTAL REQUIREMENTS - Within ten (10) days after receipt of contract award, the contractor shall submit an acceptable performance bond, payment bond and certificate of insurance. Within fifteen

(15) days after receipt of notice of award, the contractor shall provide an approved Accident Prevention Plan, Environmental Protection Plan and Quality Control Plan. (See Sections 00 73 00, 01 57 19.00 11, and 01 45 00) Within ten (10) days prior to commencement of work under this contract, the contractor shall submit to the Contracting Officer's Chief of Security, a list of all Personnel, Vehicles and Equipment that may be used during the construction work under this contract. (See Sections 00 73 00)

O. PROJNET BIDDER INQUIRY

1. Prospective Bidders should submit questions concerning this Invitation for Bid via Bidder Inquiry in ProjNet at www.projnet.org/projnet.

a. To submit and review inquiry items, prospective bidders will need to use the Bidder Inquiry Key presented below and follow the instructions listed below the key for access. A prospective bidder who submits a comment /question will receive an acknowledgement of their comment/ question via email.

Another email to the same address will notify the prospective bidder once the reply is available for viewing.

b. The Solicitation Number is: W912EQ24B0010

c. The Bidder Inquiry Key is: VVJURA-8SRKKM

Specific Instructions for First Time ProjNet Bid Inquiry Access:

(1.) From the ProjNet home page linked above, click on Quick Add on the upper right side of the screen.

(2.) Identify the Agency. This should be marked USACE.

(3.) Key. Enter the Bidder Inquiry Key listed above.

(4.) Email. Enter the email address you would like to use for communication.

(5.) Click Continue. A page will then open saying that a user account was not found and will ask you to create one using the provided form.

(6.) Enter your First Name, Last Name, Company, City, State, Phone, Email, Secret Question, Secret Answer, and Time Zone. Make sure to remember your Secret Question and Answer as they will be used from this point on to access the ProjNet system.

(7.) Click Add User. Once this is completed you are now registered within ProjNet and are currently logged into the system.

Specific Instructions for Future ProjNet Bid Inquiry Access:

(1.) For future access to ProjNet, you will not be provided any type of password. You will utilize your Secret Question and Secret Answer to log in.

(2.) From the ProjNet home page linked above, click on Quick Add on the upper right side of the screen.

(3.) Identify the Agency. This should be marked USACE.

(4.) Key. Enter the Bidder Inquiry Key listed above.

(5.) Email. Enter the email address you used to register previously in ProjNet.

(6.) Click Continue. A page will then open asking you to enter the answer to your Secret Question.

(7.) Enter your Secret Answer and click Login. Once this is completed you are now logged into the system.

2. The Bidder Inquiry System will be unavailable for new inquires Seven (7) business days prior to bid opening to ensure adequate time is allotted to form an appropriate response and amend the solicitation if necessary.

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

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

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

P. BUSINESS WITH US - As required by 15 U.S.C. 644(w), the Corps of Engineers' policy and procedures, as well as past performance information, in regard to definitization of request for equitable adjustments is found at https://www,usace.army.mil/Business-With-Us/Partnering.

Q. NEGOTIATIONS AFTER SEALED BIDDING -The Government has the option to reject all bids received in response to the sealed bid advertisement and initiate negotiation. Negotiations will include soliciting offers from each responsible bidder that submits a bid in response to the Invitation for Bids. If, after bid opening, the Contracting Officer determines that negotiations are in the best interest of the Government, the following steps will be followed:

(a) An amendment to the sealed bid advertisement will be issued to each responsible bidder changing the Invitation for Bids Number to Request for Proposals Number. The amendment will also make any necessary changes to the scope of the work.

(b) A cover letter signed by the negotiator will accompany the amendment explaining the procedures to be followed during negotiations.

(End of Summary of Changes)

15 Mile Bayou Item No. 3 15MILEBAYOU

SECTION 33 40 00

STORMWATER UTILITIES

11/21

PART 1 GENERAL

1.1 REFERENCES

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

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO HB-17 (2002; Errata 2003; Errata 2005, 17th Edition) Standard Specifications for Highway Bridges

ASTM INTERNATIONAL (ASTM)

ASTM A798/A798M (2022) Standard Practice for Installing Factory-Made Corrugated Steel Pipe for Sewers and Other Applications

ASTM A807/A807M (2019) Standard Practice for Installing Corrugated Steel Structural Plate Pipe for Sewers and Other Applications

ASTM C231/C231M (2022) Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

ASTM C270 (2019a; E 2019) Standard Specification for Mortar for Unit Masonry

ASTM D1751 (2018) Standard Specification for Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types)

ASTM D1752 (2018) Standard Specification for Preformed Sponge Rubber, Cork and Recycled PVC Expansion Joint Fillers for Concrete Paving and Structural Construction

ASTM D2321 (2020) Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications

ASTM D2487 (2017; E 2020) Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

SECTION 33 40 00 Page 1

AMENDMENT 0003

1.2 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Proposed Inlet Locations And Elevations; G, AO

SD-06 Test Reports

Leakage Test; G

SD-07 Certificates

Hydrostatic Test on Watertight Joints; G

SD-08 Manufacturer's Instructions

Placing Pipe and Box Culvert; G

SD-11 Closeout Submittals

Post-Installation Inspection Report; G

LID Verification Report; G

1.3 DELIVERY, STORAGE, AND HANDLING

1.3.1 Delivery and Storage

Inspect materials delivered to site for damage and unload and store materials with minimumal handling. Do not store materials directly on the ground. Keep the inside of pipes and fittings free of dirt and debris.

Before, during, and after installation, protect pipe and fittings from any environment that would result in damage or deterioration to the material.

Keep a copy of the manufacturer's instructions available at the construction site at all times and follow these instructions unless directed otherwise by the Contracting Officer. Store solvents, solvent compounds, lubricants, elastomeric gaskets, and any similar materials required to install pipe in accordance with the manufacturer's recommendations and discard if the storage period exceeds the recommended shelf life. Discard solvents in use when the recommended pot life is exceeded.

1.3.2 Handling

Handle materials in a manner that ensures delivery to the trench in sound, undamaged condition. Carry pipe to the trench.

PART 2 PRODUCTS

2.1 PIPE FOR CULVERTS AND STORM DRAINS

Pipe sizes for culverts and storm drains are indicated on the drawings.

SECTION 33 40 00 Page 2

AMENDMENT 0003

2.1.1 Steel Pipe

All steel pipe shall be ASTM A53 Grade A or ASTM A252 Grade 1, non-galvanized, spiral weld tubing, with a wall thickness between 3/8" or 1/2".

2.2 PIPE JOINTS

Provide joints that have been tested for and meet the requirements of paragraph HYDROSTATIC TEST ON WATERTIGHT JOINTS.

2.3 MISCELLANEOUS MATERIALS

2.3.1 Concrete

Unless otherwise specified, provide concrete and reinforced concrete conforming to the requirements for 3,000 psi concrete. Provide air content by volume of concrete mixture, based on measurements made immediately after discharge from the mixer, of 5 to 7 percent when maximum size of coarse aggregate exceeds 1-1/2 inches. Determine air content in accordance with ASTM C231/C231M. Provide a minimum concrete covering over steel reinforcing of not less than 1 inch thick for covers and not less than 1-1/2 inches thick for walls and flooring. For concrete deposited directly against the ground, provide a covering thickness of at least 3 inches between steel and ground. Provide expansion-joint filler material conforming to ASTM D1751, or ASTM D1752, or provide be resin-impregnated fiberboard conforming to the physical requirements of ASTM D1752.

2.3.2 Mortar

Mortar is not allowed for pipe joints. Provide mortar for pipe connections to drainage structures conforming to ASTM C270, Type M, except that the maximum placement time will be 1 hour. Provide a sufficient quantity of water in the mixture to produce a stiff workable mortar but in no case may the quantity exceed 5 gallons of water per sack of cement. Use water that is clean and free of harmful acids, alkalis, and organic impurities. Use the mortar within 30 minutes after the ingredients are mixed with water.

2.4 TESTS, INSPECTIONS, AND VERIFICATIONS

2.4.1 Hydrostatic Test on Watertight Joints

Perform a hydrostatic test on the watertight joint types as proposed.

This test will be conducted at the plant or by an independent laboratory.

Only one sample joint of each type needs testing; however, if the sample joint fails because of faulty design or workmanship, an additional sample joint may be tested.

PART 3 EXECUTION

3.1 PRELIMINARY DROP INLET LAYOUT

Prior to the procurement of any drop inlet materials or commencement of construction activities, a wooden stake shall be driven into the ground at each drop inlet location to a horizontal accuracy of +/-0.3 ft. Each stake shall be labeled with the corresponding inlet number indicated in the plans and the ground elevation at the stake to a vertical accuracy of +/-0.1 ft and the depth of cut/fill corresponding to the highest design

SECTION 33 40 00 Page 3

AMENDMENT 0003

elevation of the crest formed by the chimney weir, flared inlet, or riprap inlet apron as applicable. Each stake shall be located at the most landward point of the chimney weir crest, flared inlet, or riprap inlet apron, as applicable. The Contracting Officer will review the proposed inlet locations and elevations and may adjust the horizontal locations and elevations shown on the plans by up to 10 ft and +/- 2.5ft respectively in the field as needed to ensure proper drainage.

No drop inlet construction activity of any kind shall begin prior to the Contracting Officer's approval of the drop inlet locations and elevations.

Once the locations have been approved by the Contracting Officer, the Contractor shall maintain and/or replace the wooden stakes as needed to ensure that the approved drop inlet locations are clearly visible in the field until the drop inlets are installed.

3.2 EXCAVATION FOR PIPE CULVERTS, BOX CULVERTS, STORM DRAINS, AND DRAINAGE

STRUCTURES

Excavate trenches, excavate for appurtenances and backfill for culverts and storm drains, in accordance with the applicable portions of Section 31 23 00.00 11 EXCAVATION and the requirements specified below.

3.2.1 Trenching

Excavate trenches to the width indicated on the drawings or as specified herein. Trench width should permit satisfactory jointing and thorough tamping of the bedding material under and around the pipe. Place sheeting and bracing, where required, within the trench width as specified, without any overexcavation.

3.2.2 Removal of Unstable Material

Where wet or otherwise unstable soil incapable of properly supporting the pipe or box culvert, as determined by the Contracting Officer, is unexpectedly encountered in the bottom of a trench, remove such material to the depth required and replace with select granular material to the proper grade. Compact select granular material as specified in paragraph FINAL BACKFILL. When removal of unstable material is due to the fault or neglect of the Contractor while performing shoring and sheeting, water removal, or other specified requirements, perform such removal and replacement at no additional cost to the Government.

3.3 BEDDING AND INITIAL BACKFILL

Provide a firm bedding foundation of uniform density throughout the entire length of the pipe or box culvert.

3.3.1 Steel Pipe

Provide bedding and structural backfill for steel pipe in accordance with ASTM A798/A798M . It is not required to shape the bedding to the pipe geometry. However, for pipe arches, either shape the bedding to the relatively flat bottom arc or fine grade the foundation to a shallow v-shape. Structural backfill material consists of materials classified by ASTM D2487 as either GW, GM, GP-GM, GW-GM, GC, GP-GC or SW. Provide bedding for pipe meeting the requirements of ASTM A807/A807M .

SECTION 33 40 00 Page 4

AMENDMENT 0003

3.4 PLACING PIPE AND BOX CULVERT

Submit printed copies of the pipe or box culvert manufacturer's recommended pipe or box culvert installation procedures prior to installation. Thoroughly examine each section of pipe or box culvert before being laid; do not use defective or damaged pipe. Protect plastic pipe, excluding SRPE pipe, from exposure to direct sunlight prior to laying, if necessary to maintain adequate pipe stiffness and meet installation deflection requirements. Lay pipelines to the grades and alignment indicated. Provide proper facilities for lowering sections of pipe into trenches. Place lifting lugs in vertically elongated corrugated steel or aluminum pipe in the same vertical plane as the major axis of the pipe. Do not lay pipe in water or when trench conditions or weather are unsuitable for such work. Divert drainage or dewater trenches during construction as necessary.

3.4.1 Steel Pipe

Steel Pipe shall be installed in accordance with these specifications and AWWA C604. Do not lay pipe when conditions of trench or weather prevent installation. Provide a minimum of 2 feet depth of cover over top of pipe. Cement lining shall be shop applied in accordance with AWWA 205.

Tape Wrap shall be shop applied in accordance with AWWA 214. Pipe shall be handled and installed in such a way as to minimize impact to tape wrap.

3.5 FINAL BACKFILL

Backfill trenches with satisfactory material deposited in layers of a maximum of 8 inches loose thickness and compacted to 90 percent of maximum density for cohesive soils and 95 percent of maximum density for cohesionless soils in accordance with Section 31 23 00.00 11 EXCAVATION.

Testing is the responsibility of the Contractor and will be performed at no additional cost to the Government. Unless otherwise specified, determine field in-place density of final backfill at a frequency of one test per 50 linear feet, or fraction thereof, of each lift of backfill.

Submit test results in accordance with Section 31 23 00.00 11 EXCAVATION.

Do not displace or damage pipe or box when compacting final backfill by rolling or operating heavy equipment parallel with the pipe or box.

Movement of construction machinery over a culvert or storm drain at any stage of construction will be at the Contractor's risk. Repair or replace any damaged pipe. Protect concrete pipes with a minimum of 3 feet of cover prior to permitting heavy construction equipment to pass over them during construction. Provide the minimum cover for construction loads over corrugated steel pipes as specified in Section 26, Division II of AASHTO HB-17. Provide minimum cover for construction loads over plastic pipes as specified in ASTM D2321.

3.6 FIELD QUALITY CONTROL

3.6.1 Tests

Testing is the responsibility of the Contractor. Perform all testing and retesting at no additional cost to the Government.

3.6.1.1 Leakage Test

Test pipe lines for leakage prior to completing backfill by performing either an exfiltration test, low pressure air pipeline test or by individual pipe joint testing. Submit leakage test results to the

SECTION 33 40 00 Page 5

AMENDMENT 0003

(AMD0003)

(AMD0003)

Contracting Officer.

3.6.1.1.1 Exfiltration Test

Prior to exfiltration tests, backfill the trench up to at least the lower half of the pipe. If required, place sufficient additional backfill to prevent pipe movement during testing, leaving the joints uncovered to permit inspection. When the water table is 2 feet or more above the top of the pipe at the upper end of the pipeline section to be tested, measure infiltration using a suitable weir or other device acceptable to the Contracting Officer. Perform exfiltration test by filling the line to be tested with water so that a head of at least 2 feet is provided above both the water table and the top of the pipe at the upper end of the pipeline to be tested. Allow the filled line to stand until the pipe has reached its maximum absorption, but not less than 4 hours. After absorption, reestablish the head. Measure the amount of water required to maintain this water level during a 2-hour test period. Leakage as measured by the exfiltration test must not exceed 0.2 gallons per inch in diameter per 100 feet of pipeline per hour. Correct visible leaks encountered regardless of leakage test results.

3.6.1.1.2 Low Pressure Air Pipeline Tests

Perform low pressure air testing for vitrified clay pipes in accordance with ASTM C828. Perform low pressure air testing for plastic pipe in accordance with ASTM F1417. Perform low pressure air testing procedures for other pipe materials using the pressures and testing times prescribed in ASTM C828, after consultation with the pipe manufacturer.

3.6.1.1.3 Individual Pipe Joint Testing

Testing of individual joints for leakage by low pressure air or water must conform to ASTM C1103M ASTM C1103.

3.6.1.2 Deflection Testing

Conduct deflection test no sooner than 30 days after completion of final backfill and compaction testing. Clean or flush all lines prior to testing. Perform a deflection test on entire length of installed flexible pipeline upon completion of work adjacent to and over the pipeline, including backfilling, placement of fill, grading, paving, placement of concrete, and any other superimposed loads. Deflection of pipe in the installed pipeline under external loads must not exceed the limits in paragraph PLACING PIPE AND BOX CULVERT above as percent of the average inside diameter of pipe. Use a laser profiler or mandrel to determine if allowable deflection has been exceeded.

3.6.1.2.1 Laser Profiler

Inspect pipe interior with laser profiling equipment. Utilize low barrel distortion video equipment in accordance with UFGS 33 01 30.16 TV INSPECTION OF SEWER LINES for pipe diameters 48 inches or less.

3.6.1.2.2 Mandrel

Pass the mandrel through each run of pipe by pulling it by hand. If deflection readings in excess of the allowable deflection of average inside diameter of pipe are obtained, stop and begin test from the opposite direction. The mandrel must meet the pipe manufacturer's

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recommendations and the following requirements. Provide a mandrel that is rigid, nonadjustable, has a minimum of 9 fins, pulling rings at each end, and is engraved with the nominal pipe size and mandrel outside diameter.

The mandrel must be 5 percent less that the ceritified-actual pipe diameter for plastic pipe, 5 percent less than the certified-actual pipe diameter for corrugated steel and aluminum, 3 percent less than the certified-actual pipe diameter for ductile iron culvert pipe. The Government will verify the outside diameter (OD) of the Contractor provided mandrell through the use of Contractor provided proving rings.

3.6.1 Inspection

3.6.1.1 Post-Installation Inspection

Inspect each segment of pipe for alignment, settlement, joint separations, soil migration through the joint, cracks, buckling, bulging and deflection. An engineer must evaluate all defects to determine if any remediation or repair is required.

3.6.1.1.1 Post-Installation Inspection Report

The deflection results and final post installation inspection report must include: pipe location identification, equipment used for inspection, inspector name, deviation from design, grade, deviation from line, deflection and deformation of flexible pipe, inspector notes, condition of joints, condition of pipe wall (e.g. distress, cracking, wall damage dents, bulges, creases, tears, holes, etc.).

3.6.1.2 Low Impact Development Inspection

Inspect Low Impact Development (LID) features indicated on the design portion of the LID Verification Report. Certify LID features were constructed according to plans and specifications or by submitting as-built drawings in accordance with UFGS 01 78 00.00 11 CLOSEOUT SUBMITTALS. When as-built drawings show deviations to the LID features, document the deviations on the LID Verification Report.

3.6.2 Repair of Defects

3.6.2.1 Leakage Test

When leakage exceeds the maximum amount specified, correct source of excess leakage by replacing damaged pipe and gaskets and retest.

3.6.2.2 Deflection Testing

When deflection readings are in excess of the allowable deflection of average inside diamater of pipe are obtained, remove pipe which has excessive deflection and replace with new pipe. Retest 30 days after completing backfill, leakage testing and compaction testing.

3.6.2.1 Inspection

Replace pipe or repair defects indicated in the Post-Installation Inspection Report.

3.7 PROTECTION

Protect storm drainage piping and adjacent areas from superimposed and

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external loads during construction.

3.8 WARRANTY PERIOD

Pipe segments found to have defects during the warranty period must be replaced with new pipe and retested.

-- End of Section --

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RIPRAP LIMITS

CHANNEL

CULVERT RIPRAP INSTALLATION PLAN

NOT TO SCALE

6" BEDDING MAT'L

48" R200 RIPRAP

DITCH GRADE

40'

SECTION A-A

NOT TO SCALE

SECTION B-B

NOT TO SCALE

NOT TO SCALE

SECTION A-A

6" BEDDING

MATERIAL

24" R200 RIPRAP

48"

DITCH GRADE

EXISTINGCHANNEL

SIDE SLOPE

CHANNEL GRADE

48" 1V ON 1.5H

NOT TO SCALE

SECTION B-B

NOT TO SCALE

BOTTOM WIDTH

VARIES

TOP BANK

EXCAVATED MAT.

EMBANKMENT

40'40'

EXCAVATED MAT.

EMBANKMENT

24" R200 RIPRAP

6" BEDDING MATERIAL

RIPRAP LIMITS

FL

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CHANNEL B

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DESIGN

GRADE

1'

E.M.E. SLOPE TO MATCH E.M.E. FRONT

SLOPES AS SHOWN ON PREVIOUS

DRAWINGS

40' 40'

INLET DITCH WIDTH IS EQUAL TO

TWICE THE INLET DIAMETERBARREL

1V ON 1.5H

1V ON 1.5H

SLOPE TO MATCH CHANNEL

SIDE SLOPES

CHANNEL SIDE SLOPE AS

SHOWN ON DRAWINGS C-201

THRU C-204 IN THE PROFILE VIEW

CHUTE SLOPE

1V ON 1.5H

SECTION A-A

NOT TO SCALE

SECTION B-B

NOT TO SCALE

NOT TO SCALE

INLET DITCH RIPRAP INSTALLATION PLAN

SECTION B-B

NOT TO SCALE

VERTICAL

1'

40'

1V ON 1.5H

EXCAVATED MAT.

EMBANKMENT

SLOPE TOE

EXCAVATED MAT.

EMBANKMENT

SLOPE TOE

INLET DITCH

TOP SLOPE

RIPRAP HEIGHT

TO BE 1/2DEPTH

OF INLET DITCH

(3' MIN.)

TOP BANK

CHANNEL BANK

TOE

BOTTOM WIDTH

VARIES

INLET DITCH SIDE SLOPES TO MATCH

CHANNEL SIDE SLOPES RIPRAP HEIGHT

TO BE 1/2 DEPTH

OF INLET DITCH

(3' MIN.)

TYPICAL INLET CULVERT PLAN AND SECTIONS

SCALE: N.T.S.A1 TYPICAL INLET DITCH RIPRAP CHUTE PLAN AND SECTIONS

SCALE: N.T.S.A6

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INLET DITCH

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INLET STRUCTURE

SEE DETAIL SHEET C-503

INLET STRUCTURE AND RIPRAP

SEE DETAIL SHEET C-503

NOTES:

1. ALL RIPRAP AND BEDDING MATERIAL FOR INLETS AND OUTLETS DITCHES SHALL BE EMBEDDED.

2. SEE DETAIL SHEET C-503 FOR INLET STRUCTURE DETAILS.

3. INSTALL 18" OF PERVIOUS FILL AROUND BARREL FOR LOWER 1/3 OF TOTAL BARREL LENGTH BEGINNING AT BARREL OUTFALL.

NOTES:

1. ALL RIPRAP AND BEDDING MATERIAL FOR INLETS AND OUTLETS DITCHES SHALL BE EMBEDDED.

IN

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CHANNEL SIDE SLOPE

25'

30'

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NOT TO SCALE

SECTION C-C

NOT TO SCALE

BARREL LENGTH

EXCAVATION GRADE

COMPACTED

RANDOM FILL 1

2.5

18" OF PERVIOUS FILL OR

18" COMPACTED RANDOM FILL

18" PERVIOUS FILL

LOWER 1/3 BARREL LENGTH

EXCAVATED MATERIAL

CONCRETE BASE

COMPACTED RANDOM FILL

DAM NOT SHOWN IN THIS VIEW

SEE SECTION C-C.

TOP DAM

30'

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AutoCAD SHX Text A

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NOTES:

1. ANTI-VORTEX MAY BE BOLTED OR WELDED TO RISER.

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INLET RISER

NOT TO SCALE

STEEL RISER

STEEL BARREL

2.00%

CONCRETE BASE DETAIL

INLET DITCH GRADE

EMBANKMENT

TOP OF DAM

24" R-200 RIPRAP

ON 6" BEDDING MAT'L

1V:1.5H

1V:2.5H

INLET DITCH

TOP SLOPE

1.

5'

7' MIN.

2.

0'

#4 BARS @ 10" 3" CLEARANCE

BOTH ENDS

8"

3" C

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12"

VARIES

12"

STEEL RISER

STEEL BARREL

1/8"

TYP

RISER WEIR CREST

ELEVATION WITH ANTI-VORTEX

1.

5'

FLOW

2"Ø HOLES @ 3" O.C.

HORIZ. AND VERT.

1.

5'

FLOW

ANTI-VORTEX PLAN VIEW

NOT TO SCALEA2

J2 CONCRETE BASE DETAIL

NOT TO SCALEJ9

ANTI-VORTEX SECTION VIEW

NOT TO SCALEA9

RISER

DIAMETER

6" (TYP.)

2"X2" ANGLE

(TYP.)

3/ 8"

NOTES:

1. FIELD FIT INLET CULVERT AND LOCATE WITHIN CONSTRUCTION LIMITS. GRADE NEARBY AREAS TO

DRAIN AROUND EME AND TOWARD INLET LOCATIONS. ALL WELDS SHALL BE WATERTIGHT.

NOTES:

1. ANTI-VORTEX MAY BE BOLTED OR WELDED TO RISER.

3/8"

1.

0'

(T

YP

2"X2"X2.5'

ANGLE (TYP.)

RISER

6" (TYP.)

PLATE

PLATE

NOTES:

1. FIELD FIT INLET CULVERT AND LOCATE WITHIN CONSTRUCTION LIMITS. GRADE NEARBY AREAS TO

DRAIN AROUND EME AND TOWARD INLET LOCATIONS. ALL WELDS SHALL BE WATERTIGHT.

RISER WEIR CREST

ELEVATION

BARREL INLET

INVERT

2.

5'

(T

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2"Ø HOLES @ 3" O.C.

HORIZ. AND VERT.

(TYP.)

1.

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