Amendment_0001_-_MNA_Monolith_4-6_Joint_Gallery_and_Drain_Seals.pdf

W68SBV60265837

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 incorporate the changes to the solicitation as outlined in the summary of changes.

The date of quote submission has been extended to no later than 2:00 pm local time on 15 April 2016.

1. CONTRACT ID CODE PAGE OF PAGES

1 6

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

16C. DATE SIGNED

BY 11-Apr-2016

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 W912EF-16-Q-0044

X 9B. DATED (SEE ITEM 11)

22-Mar-2016

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 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

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

6. ISSUED BY

3. EFFECTIVE DATE

11-Apr-2016

CODE

USAED, WALLA WALLA - CONTRACTING DIV.

HILLARY A. MORGAN

201 N. THIRD AVENUE

WALLA WALLA WA 99362

W912EF 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:509-527-7209TEL:

JANI C LONG / CONTRACTING OFFICER

W912EF-16-Q-0044

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

McNary Navlock Monolith 4-6 Joint Gallery and Drain Seals

Summary of Changes – Amendment 0001

Changes to the soliciation:

• SECTION 00700 - CONTRACT CLAUSES

o Revised Clause 52.211-10, COMMENCEMENT, PROSECUTION, AND COMPLETION OF

WORK (APR 1984)

• SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

o Quote submission is extended to no later than 2:00PM local time on 15 April 2016.

Revised the following Specifications:

• SECTION 03 30.90 28, “MCNARY NAV LOCK MONOLITH 4-6 GALLERY AND DRAIN SEALS”

Revised the following paragraph:

2.1.2, “Government Furnished Drain Pipe Seal”

3.2.4, “Seal Installation”

See revised specification for details.

Revised the following Drawing:

• SHEET S-403 See bracketed areas

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 12-Apr-2016 05:00 PM to 15-Apr-2016 05:00 PM.

SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

The following have been modified:

The solicitation is 100 percent set-aside for small business concerns under NAICS code 237990, Other Heavy and Civil Engineering Construction.

Award will be made on the basis of lowest evaluated total price for all line items of the quotation schedule.

Quotation is due no later than 2:00PM local time on 15 April 2016.

(This instruction overrides the statement in Block Number 10 of Standard Form 18).

Quotation may be emailed (preferred) to: Hillary.A.Morgan@usace.army.mil

Quotation may be hand-delivered or mailed to: US Corps of Engineers, Attention: Contracting Division, Hillary Morgan, 201 N. Third Ave, Walla Walla, 99362

The resulting purchase order will be FOB Destination. Quoted price must include all shipping to destimation and all Federal, State, and local taxes. Inspection and acceptance will be at destination.

All work shall be in accordance with the specifications, attachments, and all other terms and conditions herein.

This work is considered a construction project in excess of $2,000. The Davis Bacon Act applies. No laborer or mechanics employed directly upon the site of work shall receive less than the prevailing wage rates as determined by the Secretary of Labor and the wages specified in FAR Clause 52.222-6, Construction Wage Rate Requirements.

Wage Decision Number WA160089 (WA89) is attached hereto and incorporated herein.

REQUIRED LIABILITY INSURANCE PURSUANT TO FAR 28.306

In accordance with the clause 52.228-5 Insurance – Work on a Government Installation, the Contractor shall procure and maintain during the entire period of his performance under this contract the following minimum insurance:

(i) Coverage complying with state laws governing insurance requirements pertaining to Workmen’s Compensation and Employers” Liability Insurance.

(ii) Bodily injury liability insurance with minimum limits of $500,000 per occurrence shall be required on the comprehensive form of policy.

(iii) Automobile bodily injury and property damage liability with minimum limits of $200,000 per person and $500,000 per occurrence for bodily injury liability; and $20,000 per occurrence for property damage liability shall be required.

(iv) The coverage required under Longshore and Harbor Workers Compensation Act, if applicable.

(v) The Insurance Certificate will name the Walla Walla District, U.S. Army Corps of Engineers, 201 N. Third Avenue, Walla Walla, Washington 99362 as the Certificate Holder.

mailto:Hillary.A.Morgan@usace.army.mil

ENVELOPE(S), PURSUANT TO FAR 14.201-5

Envelope (s) shall be plainly marked with the following information:

Solicitation No. __________________________________ Opening Date ___________________________________ Number of each amendment which has been received

CONTRACTOR RESPONSIBILITY, PREAWARD SURVEY

In order to determine a contractor’s responsibility for purposes of contract award the contractor is required to provide a statement regarding previous experience and past performance in performing comparable work, information related to the business organization, financial resources, and/or plant to be used in performing the work.

(See the Attention to Bidders form included in this solicitation.) In accordance with FAR 9.104-1, to be determined responsible, a prospective contractor must –

(a) Have adequate financial resources to perform the contract, or the ability to obtain them;

(b) Be able to comply with the required or proposed delivery or performance schedule, taking into consideration all existing commercial and governmental business commitments;

(c) Have a satisfactory performance record. (A prospective contractor shall not be determined responsible or non-responsible solely on the basis of a lack of relevant performance history except as provided in FAR 9.104-2);

(d) Have a satisfactory record of integrity and business ethics;

(e) Have the necessary organization, experience, accounting and operational controls, and technical skills, or the ability to obtain them;

(f) Have the necessary production, construction, and technical equipment and facilities, or the ability to obtain them; and

(g) Be otherwise qualified and eligible to receive an award under applicable laws and regulations.

Bidder Inquiry

All inquiries regarding this solicitation are to be submitted via Bidder Inquiry. Telephone and email inquiries will not be accepted. Bidder Inquiry is a web-site that allows bidders to post questions regarding the solicitation and view all questions by other bidders and responses by USACE. Bidder Inquiry can be accessed through ProjNet at (https://www.projnet.org)

To submit and review inquiry items, prospective vendors will need to use the Bidder Inquiry Key presented below and follow the instructions listed below the key for access. A prospective vendor 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 vendor once the reply is available for viewing.

TIMING OF BIDDER INQUIRIES: Bidders are encouraged to submit their bidder inquiries promptly. The Government will make every effort to answer all bidder inquiries; however, the closer to the bid or proposal due date an inquiry is received, the less likely it is that a timely response can be provided.

The Bidder Inquiry Key is: 33C84Z-3ERH6V

Specific Instructions for 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 as USACE.

https://www.projnet.org/

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.

Instructions for Entering Questions:

1. After you are logged in click on the "post new inquiry", it is on the left side of the window under the Word "Submit" a.) This is the window where you will enter your questions b.) Comment Classification: Click on the down arrow to the right of the words “Please select from below”, select “Public” c.) Discipline: This is where you select who this question should be directed to. Example; if the question is about an electrical drawing or specification select: “Electrical” from the pull down list.

d.) Sheet. Enter the sheet number of the drawing you are asking about.

e.) Detail. Enter the detail name of the detail shown on the drawing that you are asking about.

f.) Specification. Enter the Specification number and paragraph number.

g.) File. Use this if you are going to attach a pdf file.

h.) Question. Enter your question here.

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 as 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.

For questions about the ProjNet Bidder Inquiry, please contact the Call Center help desk toll free at 1-800-428- HELP, which operates from 8AM to 5PM (Central US time zone). Bidder inquiry help questions can also be emailed to the helpdesk at staff@projnet.info mailto:staff@projnet.info

SECTION 00700 - CONTRACT CLAUSES

The following have been modified:

52.211-10 COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR 1984)

The Contractor shall be required to

(a) Commence work under this contract within 10 calendar days after the date the Contractor receives the notice to proceed,

(b) prosecute the work diligently, and

(c) complete the entire work ready for use not later than 120 calendar days after notice to proceed.

(1) The Contractor shall complete final cleanup and demobilization by not later than 15 calendar days after completion of work in (1) above.

(2) The Contractor shall complete final submission of working “as-built” contract drawings (see SECTION 01 78

00.00 28) by not later than 30 calendar days after completion of work in (1) above.

(End of Clause)

(End of Summary of Changes)

McNARY NAVLOCK MONOLITH 4-6 JOINT GALLERY AND DRAIN SEALS W912EF-16-Q-0044 Amend-0001

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00.00 28 GENERAL REQUIREMENTS

01 11 01.00 28 SUPPLEMENTARY REQUIREMENTS

01 14 00.10 28 PROJECT SITE RESTRICTIONS

01 14 00.90 28 INTEGRATING ANTITERRORISM (AT) AND OPERATIONS SECURITY

(OPSEC)

01 22 00.00 28 MEASUREMENT AND PAYMENT

01 33 00 SUBMITTAL PROCEDURES

01 35 29.10 28 SAFETY AND OCCUPATIONAL HEALTH REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 04.00 28 CONTRACTOR QUALITY CONTROL

01 51 00.00 28 TEMPORARY UTILITIES

01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

01 57 20.00 28 ENVIRONMENTAL PROTECTION

01 78 00.00 28 CLOSEOUT SUBMITTALS

DIVISION 03 - CONCRETE

03 30 90.00 28 MCNARY NAV LOCK MONOLITH 4-6 GALLERY AND DRAIN SEALS

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1 g4ecdmgz Line

SECTION TABLE OF CONTENTS

DIVISION 03 - CONCRETE

SECTION 03 30 90.00 28

MCNARY NAV LOCK MONOLITH 4-6 GALLERY AND DRAIN SEALS

PART 1 GENERAL

1.1 REFERENCES

1.2 General

1.3 SUBMITTALS

1.3.1 QUALIFICATION OF WELDERS AND WELDING OPERATORS

PART 2 PRODUCTS

2.1 GOVERNMENT FURNISHED MATERIALS

2.1.1 Waterstop Seal for Gallery

2.1.2 Government Furnished Drain Pipe Seal

2.2 CONTRACTOR FURNISHED MATERIALS

2.2.1 Retention Plates and HSS Hold Downs

2.2.2 Drain Seal PVC Pipe

2.2.3 Anchors

2.2.4 Access Cover

PART 3 EXECUTION

3.1 GALLERY SEAL INSTALLATION

3.1.1 Steel Fabrication

3.1.1.1 Welding of Stainless Steel

3.1.2 Gallery Seal Demolition

3.1.3 Modifications To Fiberglass Grating

3.1.4 Gallery Seal Installation

3.1.5 Retention Plate Installation

3.2 DRAIN PIPE SEAL INSTALLATION

3.2.1 Concrete Excavation

3.2.2 Video Inspection

3.2.3 Pipe Cleaning

3.2.4 Seal Installation

3.2.5 Access Cover Fabrication And Installation

-- End of Section Table of Contents --

SECTION 03 30 90.00 28

g4ecdmgz Line

SECTION 03 30 90.00 28

MCNARY NAV LOCK MONOLITH 4-6 GALLERY AND DRAIN SEALS

PART 1 GENERAL

1.1 REFERENCES

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

AMERICAN WELDING SOCIETY (AWS)

AWS D1.6/D1.6M (2007) Structural Welding Code - Stainless Steel

ASTM INTERNATIONAL (ASTM)

ASTM A 276 (2006) Standard Specification for Stainless Steel Bars and Shapes

ASTM D1785 (2012) Standard Specification for Poly(Vinyl Chloride) (PVC), Plastic Pipe, Schedules 40, 80, and 120

1.2 General

This specification is for sealing a leaking construction joint in the Navigation Lock at McNary Dam. This work will re-establish a waterstop to keep water out of the gallery and drainage sump. There are two main features of work:

1)Installing a seal in the interior of a gallery.

2)Installing a seal inside a drain pipe.

1.3 SUBMITTALS

SD-06 Test Reports

Video Recording; I C

Qualification of Welders and Welding Operators; I C

1.3.1 QUALIFICATION OF WELDERS AND WELDING OPERATORS

Certify that the qualification of welders and welding operators and tack welders who will perform welding have been qualified for the particular type of work to be done in accordance with the requirements of AWS D1.6/D1.6M , Section 4, prior to commencing fabrication. List the qualified welders by name and specify the code and procedures under which qualified and the date of qualification within the certification. Prior qualification will be accepted if welders have performed satisfactory work under the code for which qualified within the preceding six months.

Welders are required to repeat the qualifying tests when their work indicates a reasonable doubt as to proficiency. Those passing the

SECTION 03 30 90.00 28

requalification tests will be recertified. Those not passing will be disqualified until passing.

PART 2 PRODUCTS

2.1 GOVERNMENT FURNISHED MATERIALS

2.1.1 Waterstop Seal for Gallery

The government will furnish the waterstop seal material that the Contractor will install in the gallery seal. This material will be provided in 4-foot long strips that are 2-inches by 4-inches rectangular.

The material is Adeka Ultra Seal A-30 manufactured by Adeka Corporation.

This is a hydrophilic material that expands when in contact with water.

The material shall be protected from moisture at all times until installation.

2.1.2 Government Furnished Drain Pipe Seal

The Government will furnish the drain pipe seal. The Contractor will install this drain seal inside the existing 6-inch drain pipe. The drain seal will be made out of PVC pipe, Ultra High Molecular Weight polyethylene and hydrophilic seal material (Adeka Ultra Seal A-30) as shown in the plans. The seal will be undersized such that is slides freely inside the 6-inch drain pipe. The seal material will slowly expand when in contact with water. Once the initial installation of the seal has commenced, and the the seal is exposed to moisture the seal installation shall be completed within 4hrs.

2.2 CONTRACTOR FURNISHED MATERIALS

Provide all other materials necessary to perform this work.

2.2.1 Retention Plates and HSS Hold Downs

Retention plates used to hold down and retain the seal shall be 3/8-inch thick by 6-inch wide grade 304L stainless steel plate in accordance with ASTM A 276 . Plates shall be accurately centered over the seal and for the installation.

2.2.2 Drain Seal PVC Pipe

For the drain seal installation, the Contractor shall provide ten 4 foot lengths of 3 inch diameter schedule 40 PVC pipe in accordance with ASTM D1785. For each 4 foot length of PVC pipe, provide a 3 inch diameter threaded male fitting glued on one end, and a 3 inch diameter female threaded connector glued on the other end.

2.2.3 Anchors

Anchor bolts for the HSS hold downs shall be 1/2" diameter ASTM A193/A193M 316 stainless steel. The undercut anchor bolts shall have the following salient characteristic. The tension and shear factored concrete design strength in 2,500 psi concrete shall be a minimum of 11,000 lbs tension and 22,000 lbs shear. The design strength does not account for spacing reduction factors. The effective depth of the anchors shall 5 inches and shall be

SECTION 03 30 90.00 28

installed in accordance with the manufacturer's recommendations. Additional requirements are described in the drawings.

2.2.4 Access Cover

The access cover shall be fabricated from 1/4" stainless steel diamond plate and stainless steel angles as shown on the drawings. The Contractor shall verify the cover fits the cut out in the concrete as shown on the drawings with a 1/4" tolerance.

PART 3 EXECUTION

3.1 GALLERY SEAL INSTALLATION

3.1.1 Steel Fabrication

Material shall be straight before being laid off or worked. If straightening is necessary it shall be done by methods that will not impair the metal. Sharp kinks or bends shall be cause for rejection of the material. Material with welds will not be accepted except where welding is specifically specified, indicated on the drawings or otherwise approved. Bends shall be made by dies, press brakes or bending rolls normally used in this type of fabrication. Where heating is required, precautions shall be taken to avoid overheating the metal and it shall be allowed to cool in a manner that will restore the original properties of the metal. Proposed flame cutting of material other than structural steel shall be subject to approval and shall be indicated on shop drawings.

Shearing shall be accurate and all portions of the work shall be neatly finished. Corners shall be square and true unless otherwise shown on the drawings. Re-entrant cuts shall be filleted to a minimum radius of 3/4-inch unless otherwise approved. Finished members shall be free of twists, bends and open joints.

3.1.1.1 Welding of Stainless Steel

a. Welding Procedures for Stainless Steel shall be accordance with AWS D1.6/D1.6M The welding process shall performed by an electric arc welding process using a method which excludes the atmosphere from the molten metal and conforms to the applicable provisions of AWS D1.6/D1.6M . Minimize residual stresses, distortion and shrinkage from welding.

d. Workmanship - Perform welding workmanship in accordance with AWS D1.6/D1.6M , Section 3 and other applicable requirements of these specifications.

(1) Preparation of Base Metal - Prior to welding inspect surfaces to be welded to ensure compliance with AWS D1.6/D1.6M .

(2) Temporary Welds - Make temporary welds, required for fabrication and erection, under the controlled conditions prescribed for permanent work. Temporary welds are only to be made by welders qualified for permanent work as specified in these specifications. Conduct preheating for temporary welds as required by AWS D1.6/D1.6M for permanent welds. In making temporary welds, arcs shall not be struck in other than weld locations. Remove each temporary weld and grind flush with adjacent surfaces after serving its purpose.

(3) Tack Welds - Subject tack welds that are to be incorporated into the permanent work to the same quality requirements as the permanent welds; clean and thoroughly fuse them with permanent welds. Perform preheating as specified above for temporary welds. Multiple-pass tack welds shall have cascaded ends. Remove defective tack welds before permanent welding.

3.1.2 Gallery Seal Demolition

Prior to the installation of the gallery seal the contractor shall remove the existing 1/4" x 15" stainless steel plates with rubber seal backing and anchors as indicated in the drawings. There will also be a small amount of previously installed hydrophilic grout in the area of the joint to remove. The designated rectangular slot shall be saw cut with a diamond-blade concrete saw at the locations and to the depths shown on the drawings. Sawing shall not damage adjacent concrete, equipment, or other features. Other small hand chisels and grinders may be used as necessary to remove the concrete after saw cutting. Due to the geometry of the gallery, select areas may require chiseling to provide the specified rectangular slot.The side walls and bottom of the excavation shall be reasonably smooth with any deviation being less than 1/8-inch. Cuttings, concrete, and water shall be filtered in accordance with SECTION 01 57 20.00 28 ENVIRONMENTAL PROTECTION paragraph entitled "Wastewater".

The existing concrete may be expected to range in strength from 3,000 to 6,000 psi. Large aggregate, reinforcing steel and metal debris may be encountered during cutting.

Electrical conduits and cables mounted to the gallery walls at the monolith joint shall be temporarily unfastened and supported to allow for access to areas requiring saw cutting and/or chiseling. Reattach conduit after gallery seal installation is complete.

3.1.3 Modifications To Fiberglass Grating

Minor modifications to existing fiberglass grating and steel grating supports will be required in order to accommodate the Gallery Seal.

3.1.4 Gallery Seal Installation

The saw cut channel shall be cleaned by the Contractor, inspected by the Contracting Officer's Representative, and then completely filled with the government provided rectangular hydrophilic seals. The Contractor shall provide a 24hr notice to the COR to notify that the concrete excavation is ready to be inspected prior to the installation of the seals. Cut the seal material as necessary to achieve the proper lengths of pieces to fill the entire saw cut channel. The seals are 2" wide by 4" deep and can be up to 1/8" undersize in depth and width. Ends shall be cut square and smoothly so full section contact is achieved at butt joints. The Contractor shall ensure that the seal fits tightly into the channel.

3.1.5 Retention Plate Installation

The contractor shall immediately install the retention plates over the waterstop seal as shown in the drawings. All prep work such as drilling for anchor bolts and sizing of the plates shall be completed prior to installing the waterstop seal. The plates shall be dry fit to ensure bolt holes are in alignment and lengths are correct prior to installing the hydrophilic seal as shown on the drawings.

The HSS holddowns over the retention plates shall be situated such that existing grout holes as indicated by the COR remain accessible after installation is complete as indicated on the drawings, the holddowns can be shifted enough from the uniform spacing to keep the grout holes exposed.

3.2 DRAIN PIPE SEAL INSTALLATION

3.2.1 Concrete Excavation

Excavate concrete in the floor of the gallery as indicated, so that there is access to the end of the drain pipe and sufficient clearance to install the Drain Pipe Seal. Excavations shall be saw cut with a concrete saw at the locations and to the dimensions shown on the plans. Sawing shall not damage adjacent concrete, equipment, or other features. The side walls and bottom of the excavation shall be reasonably smooth with any deviation being less than 1/8-inch. Cuttings, concrete, and water shall be contained and disposed of in an approved manner. The existing concrete may be expected to range in strength from 3,000 to 6,000 psi. Reinforcing steel and metal debris may be encountered during cutting.

3.2.2 Video Inspection

After completion of the saw cutting, the Contractor shall perform a video inspection of the drain pipe. The video inspection shall be performed in the presence of a Government representative. The Contractor shall provide the COR with a 24hr notice prior to the inspection. Video inspection equipment shall be specifically designed for video recording of horizontal pipes. At minimum it shall be comprised of a compact camera unit with integral light, distance measuring device, centralizers, viewing screen for the operator, and recording capability. The camera shall function both under water and in the dry. The entire length of the straight segment of the pipe shall be inspected, with the entire inspection recorded. The exact distance from the gallery wall to the monolith joint shall be noted during the inspection, as this is where the seal has to be centered when installed.

Submit a CD-ROM with a video recording of the inspection in .MP4, .WAV, or .AVI format.

The Contractor shall be aware that during a navigation lockage additional leakage may occur that could make the inspection more difficult. It is recommended that the video inspection be coordinated with navigation traffic.

3.2.3 Pipe Cleaning e

Prior to installing the seal clean the drain pipe with a stiff bristled wire brush. The pipe shall be cleaned from the outlet to up to the joint, including the area where the seal will be placed. The wire brush shall be of an adequate stiffness and diameter to remove any debris or build up on the inside of the pipe, without causing damage to the pipe. After cleaning the pipe video inspect it to determine that there are no obstructions that would interfere with installation of the seal.

3.2.4 Seal Installation

Prior to installing the seal, permanently attach a cloth or fiberglass tape measure to the end of the seal pipe. With the tape attached, lay out the seal and tape on the gallery floor and mark on the tape the distance at which when installed the seal will be centered on the monolith 4/6 joint. Install the seal by attaching the Contractor furnished sections of PVC pipe to the seal and pushing it into the pipe from the outlet end where the concrete excavation occurred. It is anticipated that manual pushing by hand will provide adequate force to install the pipe. Ensure that the seal is installed the correct distance so that it is centered on the joint. Provide temporary bracing to ensure position of the seal for a minimum of 3 calendar days.

3.2.5 Access Cover Fabrication And Installation

The Contractor shall verify the cover fits the cut out in the concrete as shown on the drawings with a 1/4" tolerance, and install as shown on the drawings.

-- End of Section --

SECTION 03 30 90.00 28