W912EF18B0025-0003.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 Purpose for this amendment is to revise the follow ing specifications section(s): 01 35 10.00 28 DIVING and 01 55 10.00 28 CONTRACTOR WORK, ACCESS AD STORAGE AREAS. See Summary of changes revised specification for details.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 17-Aug-2018

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 W912EF18B0025

X 9B. DATED (SEE ITEM 11)

17-Jul-2018

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 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

17-Aug-2018

CODE

USAED, WALLA WALLA - CONTRACTING DIV.

LEANNE WALLING

201 N. THIRD AVENUE

WALLA WALLA WA 99362-1876

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

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EF18B0025

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 01 10 - TABLE OF CONTENTS

The following have been added by full text:

AMENDMENT #3

Summary of changes for Amend -0003 McNary Lamprey South Fishladder Permanent Entrance Structure

W912EF18B0025

1. Revised the following Specifications:

a. SECTION 01 35 10.00 28 DIVING

Revised paragraph 1.2 ANTICIPATED DIVING ENVIRONMENT.

Added paragraph 1.2.1 " Fishway Isolation Logs".

Revised paragraph 3.2 CONTRACTOR FURNISHED DIVING SUPPORT EQUIPMENT.

b. SECTION 01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

Revised paragraph 1.5 CONTRACTOR ACCESS TO FISHWAY.

See revised specification for details.

(End of Summary of Changes)

McNary Lamprey South Fishladder Permanent Entrance Structure W912EF18B0025 Amend-0003

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 35 10.00 28

DIVING

PART 1 GENERAL

1.1 GENERAL

1.2 ANTICIPATED DIVING ENVIRONMENT

1.2.1 Fishway Isolation Logs

1.2.2 Unit Outage

1.2.3 Water Surface Elevations

1.2.4 Water Temperatures

1.3 DIVE OPERATION NOTIFICATION

1.4 REFERENCES

1.5 SUBMITTALS

1.6 DIVING SUBMITTALS

1.7 DIVE PLAN

1.8 LOCKOUT/TAGOUT (LOTO)-SAFE CLEARANCE OR HAZARDOUS ENERGY CONTROL

(HEC) PROCEDURES

1.9 SPECIAL SAFETY REQUIREMENTS

PART 2 PRODUCTS

2.1 UNDERWATER VIDEO

PART 3 EXECUTION

3.1 DIVE TEAM COMPOSITION AND DIVE EQUIPMENT

3.2 CONTRACTOR FURNISHED DIVING SUPPORT EQUIPMENT

3.3 CONTRACTOR SPECIAL EQUIPMENT

3.4 SPILL CONTAINMENT

3.5 DIVING WORK DESCRIPTION

-- End of Section Table of Contents --

SECTION 01 35 10.00 28

G4EDHCMP

Line

G4EDHCMP

Line

This page intentionally left blank

SECTION 01 35 10.00 28

DIVING

PART 1 GENERAL

1.1 GENERAL

This section covers the general requirements for contract diving operations to be performed as specified within this contract. Perform diving in accordance with the latest edition of the U.S. Army Corps of Engineers Safety and Health Requirements Manual EM 385-1-1, Section 30: DIVING OPERATIONS in accordance with Clause ACCIDENT PREVENTION (52.236-13), Walla Walla District's Safety Manual NWW OM 385-1-1 (Appendix I), and elements of the following references: 29 CFR 1910, Subpart T and the latest edition of NAVSEA SS521-AG-PRO-010 U.S. Navy Diving Manual, Volume 1 inclusive of all other references listed therein. All diving operations shall be considered incidental to the work specified elsewhere herein. No separate payment for diving work will be made.

1.2 ANTICIPATED DIVING ENVIRONMENT

Diving area is immediately inside the South Shore Fishway Western Entrance (SFE-2) and may be calmer than the river. Flows in the tailrace near the entrance have not been verified but are anticipated to be about 1 - 3 knots. Tailwater eddies and turbine boil may create currents and also affect diving. Water is anticipated to be very cloudy with poor visibility. The Anticipated Diving Environment consists of the following:

a. Depth less than 75 feet.

b. Water temperature less than 40 degrees F (hot water dive suits required when water temperatures are below 40 degrees F). See paragraph "Water Temperatures" for additional information.

c. Water velocity in the fishway, prior to entrance bulkhead installation (between the fishway and the tailrace), between 1 knot and 3 knots. See paragraph "Fishway Isolation Logs" below.

d. Water velocity in the fishway, after entrance bulkhead installation, is anticipated to be less than 1 knot.

de. Visibility less than 5 feet.

ef. Any diving under an underwater ledge, when there is no direct, straight line assent to the surface (such as during installation and removal of the bulkhead/caisson, as applicable), will be considered Penetration Dives. Penetration dives are only anticipated if the following conditions occur:

1. Tailwater elevations above EL 271 fmsl.

2. Telescoping weirs dogged off in guide slots during high tailwater.

SECTION 01 35 10.00 28

1.2.1 Fishway Isolation Logs

a. Government will install the Fishway Isolation Logs upstream of the work area, if requested by the Contractor. See SECTION 01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS, paragraph CONTRACTOR ACCESS TO FISHWAY additional information.

b. If Fishway Isolation Logs seal, as designed, water velocity in the fishway from upstream sources, is anticipated to be less than 1 knot.

c. The Government will make every effort to minimize flows from upstream sources. If Isolation Logs stick upon installation, the Government cannot guarantee flows less than 1 knot in the fishway, prior to entrance bulkhead installation.

1.2.2 Unit Outage

To slow down flows and create a safer diving environment the Government will be able to take the following units out of service: One Station Service Unit and Main Units 1 and 2, during diving hours only. One of the station service units will be online at all times. Unit outages require coordination between the Government and Contractor and will be discussed during the pre-work meeting. Anticipate a minimum 3 week notice required prior to removing a Station Service or Main Unit from service.

1.2.3 Water Surface Elevations

McNary tailwater elevations from January 28th through February 28th from years 2000 to 2018 show an average tailwater elevation of 265.6 feet mean sea level (fmsl). The high tailwater elevation was 268.3 fmsl and the low tailwater elevation was 262.7 fmsl for the same period.

1.2.4 Water Temperatures

a. Temperature probes in the tailrace record water temperatures at about 15-18 feet of depth (water in this area is well mixed and anticipated to be approximately the same temperature at all depths).

Historical data shows minimum water temperatures dropping below 40 degrees Fahrenheit beginning mid to late December and running through February, on average. Average minimum recorded temperatures during this time reach about 36 degrees F.

b. Tailrace water temperatures between December and the end of February ranged from 33.3 degrees, F, to 49.2 degrees, F from December 2011 through February 2016.

1.3 DIVE OPERATION NOTIFICATION

Notify the Government a minimum of 2-weeks prior to the start of dive operations. All dive submittals must be submitted for review 30 working days prior to commencement of dive work. Dive work may not commence until all dive submittals have been reviewed and accepted by the District Dive Coordinator.

1.4 REFERENCES

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

SECTION 01 35 10.00 28

U.S. ARMY CORPS OF ENGINEERS (USACE)

NWW OM 385-1-1 Walla Walla District's Safety Manual, Appendix I Diving operations. Available from the Walla Walla District Dive Coordinator. (509-527-7120)

EM 385-1-1 Safety and Health Requirements Manual

Comply with the current edition and all changes posted on the web as of the effective date of this solicitation.

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

29 CFR 1910 Occupational Safety and Health Standards

U.S. NAVAL SEA SYSTEMS COMMAND (NAVSEA)

NAVSEA SS521-AG-PRO-010 (2008, rev. 6) U.S. Navy Diving Manual

1.5 SUBMITTALS

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

submittals having an "I" designation are for information only. A designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Safe Practices Manual; G DDC

Emergency Management Plan; G DDC

Dive Personnel Qualifications; G DDC

Dive Station Equipment Certifications and Certificates for Air Quality; G DDC

Dive Plan; G DDC

Activity Hazard Analysis (AHA); G DDC

Safe Clearance; G DDC

SD-06 Test Reports

Underwater Video; I C

1.6 DIVING SUBMITTALS

Submit the following:

a. Safe Practices Manual as required for diving in EM 385-1-1.

b. Emergency Management Plan as required for diving in EM 385-1-1.

c. Dive personnel qualifications as required for diving in EM 385-1-1.

SECTION 01 35 10.00 28

d. Dive Station Equipment Certifications and Certificates for Air Quality as as required for diving in EM 385-1-1.

1.7 DIVE PLAN

Submit the Dive Plan and job-specific Activity Hazard Analysis (AHA) to the Contracting Officer for approval 30 calendar days prior to planned dive date. See SECTION 01 35 29.10 28 GOVERNMENTAL SAFETY REQUIREMENTS paragraph ACTIVITY HAZARD ANALYSIS (AHA) for additional information.

Diving will not be allowed without an approved Dive Plan.

1.8 LOCKOUT/TAGOUT (LOTO)-SAFE CLEARANCE OR HAZARDOUS ENERGY CONTROL (HEC)

PROCEDURES

Submit a Safe Clearance plan for diving in accordance with requirements in SECTION 01 35 29.10 28 GOVERNMENTAL REQUIREMENTS paragraph LOCKOUT/TAGOUT

(LOTO)-SAFE CLEARANCE OR HAZARDOUS ENERGY CONTROL (HEC) PROCEDURES.

1.9 SPECIAL SAFETY REQUIREMENTS

In addition to Safety and Health Requirements Manual, EM 385-1-1 and NWW OM 385-1-1 (Appendix I), comply with the requirements listed below.

Paragraph numbers refer to EM 385-1-1.

a. EM 385-1-1 Section 30 Surface - Supplied Air Operators, paragraph 30.D.03. Delete the following from the first sentence: "for any dive outside the no-decompression limits or deeper than 30m (100 ft)." A recompression chamber shall be required regardless of the depth of dive.

b. EM 385-1-1 Section 30 - Mixed Gas Diving Operations. Add the following: On a case by case basis, the use of up to 40 percent Nitrox will be allowed for diving operations. As a minimum, the following conditions must be met in order for use of Nitrox/mixed gas to be approved:

(1) If NITROX / mixed gas diving operations methodology is utilized, all dive team members (dive supervisor, divers, chamber operator, timekeeper, tenders) must possess NITROX and / or mixed gas certification from a nationally recognized organization (NAUI, PADI, TDI, IANTD, etc.). Copies of these certifications shall be submitted for review prior to the dive.

(2) A NITROX / mixed gas certified COE dive safety inspector (DSI) shall be on site at all times during NITROX / mixed gas diving operations.

(3) The Dive Plan shall detail exactly what Nitrox/mixed gas dive work will be accomplished including expected depths and bottom times.

(4) The Dive Plan and Activity Hazard Analysis shall describe procedures for safe use of Nitrox/mixed gas and shall be approved prior to any Nitrox dives.

(5) Nitrox/mixed gas dives shall be performed using the Equivalent Air Depth with standard U.S. Navy air dive tables to determine dive duration including repetitive dives. Oxygen exposure at depth shall also be checked and the most conservative dive time used. Dive computers shall not be used to determine allowable dive times.

PART 2 PRODUCTS

2.1 UNDERWATER VIDEO

Furnish an underwater video as a record of inspection. Video shall be taken after installation of the Modified Entrance Structure is complete.

To be considered acceptable by the Contracting Officer, all features being demonstrated by video shall be clearly discernable. Incorporate date, time, diver (or ROV operator), and task description in the narrative of the video or by some other approved means. The final video product shall be on DVD format. All video final products shall be provided to the Contracting Officer as soon as practical upon completion of the applicable phase of work.

PART 3 EXECUTION

3.1 DIVE TEAM COMPOSITION AND DIVE EQUIPMENT

The dive team shall at a minimum, be comprised of five members; a dive supervisor, a diver, a standby diver, tender and timekeeper. No scuba diving will be permitted unless approved by the District Dive Coordinator (DDC). In addition to the dive team personnel addressed in the above references, minimum required chamber crew personnel shall be provided as diving operations dictate. If a crane is used, it must be operated by a certified crane operator who shall not be included as a member of the dive team. Only surface-supplied air diving equipment with 2-way voice communication shall be used for divers and standby divers. An independent reserve air system (bailout bottle) for all divers is required as specified by EM 385-1-1, paragraph 30, D, E, F. Provide a minimum of 50 cf (cubic feet) reserve air supply for each diver. As a minimum, all diver surface air supply compressors, tanks, helmets, and other related equipment must comply with the requirements of EM 385-1-1, paragraph 30, D, E, F. The diver and the chamber operator will remain in the vicinity (within 30 minutes) of the dive chamber for at least two (2) hours following dives outside the no decompression limit.

3.2 CONTRACTOR FURNISHED DIVING SUPPORT EQUIPMENT

A dual lock recompression chamber capable of recompression to a minimum of 165 feet of salt water (FSW) shall be required to be on-site and available for immediate use. Sufficient on-site chamber facilities shall be furnished to service multiple divers working simultaneously on differing recompression schedules, if necessary. Diving operations, including rescue operations, shall be staged from the tailrace deck. Approved man-basket(s) shall be provided for each working diver as needed. All necessary top-side equipment such as cranes, trucks, and personnel vehicles shall be furnished that are needed to accomplish all required dive work as well as all necessary underwater hand and power tools. Contractor shall supply safety crew and equipment, as needed. No separate payment will be made for safety crew and/or equipment.

3.3 CONTRACTOR SPECIAL EQUIPMENT

Underwater color video camera with appropriate lighting apparatus that is appropriate for the dive, topside video monitor and DVD recorder will be

SECTION 01 35 10.00 28

required on all dives.

3.4 SPILL CONTAINMENT

All diving operations working from a floating plant in which hydraulic tools are used shall have a spill containment boom deployed in the immediate work area. This boom does not need to go around the entire floating plant, but only the potential spill areas. Absorbent tubes are not permissible. A spill containment boom shall have a 12-inch skirt and a 4-6-inch diameter float.

3.5 DIVING WORK DESCRIPTION

Dive work at a fishway entrance cannot begin until the Government has shut off fish pump water supply, placed bulkheads upstream of the fishway entrance work area, and the COR has given the Contractor to approval proceed. See Section 01 14 00.10 28 PROJECT SITE RESTRICTIONS, paragraph SITE CONDITIONS AND OPERATIONAL RESTRICTIONS, for additional information.

Dive work includes the following tasks:

a. Removal of existing Lamprey Entrance Structure.

b. Modification of existing Lamprey baffle box.

c. Reinstallation of modified Lamprey Entrance Structure.

d. Other support tasks as required.

-- End of Section --

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 55 10.00 28

CONTRACTOR WORK, ACCESS AND STORAGE AREAS

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 CONTRACTOR'S STORAGE AND STAGING AREA

1.4 CONTRACTOR ACCESS TO WORK AREA

1.5 CONTRACTOR ACCESS TO FISHWAY

1.6 INSTALLATION PLAN

1.6.1 Inspection of Government Property

1.6.2 Telescoping Weir Operation

1.7 ROADWAY ACROSS THE TOP OF THE DAM

1.8 OVERHEAD POWER TRANSMISSION LINES

1.9 TRAFFIC CONTROL AND PUBLIC ACCESS

1.9.1 Public Access Barriers

1.10 GOVERNMENT ROADWAYS AND DECK ACCESS RESTRICTIONS

1.11 DUST CONTROL PLAN

1.12 HAULING MATERIAL

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used)

-- End of Section Table of Contents --

SECTION 01 55 10.00 28

This page intentionally left blank

SECTION 01 55 10.00 28

CONTRACTOR WORK, ACCESS AND STORAGE AREAS

PART 1 GENERAL

The work covered by this section of the specifications consists of work common to more than one section of these TECHNICAL SPECIFICATIONS.

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 (Fifth Edition) LRFD Bridge Design Specifications

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 Safety and Health Requirements Manual

Responsible for complying with the current edition and all changes posted on the web as of the effective date of this solicitation.

1.2 SUBMITTALS

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

submittals having an "I" designation are for information only. A designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Installation Plan; G C

Transport Loading Diagrams; G ST

Dust Control Plan; I C

1.3 CONTRACTOR'S STORAGE AND STAGING AREA

a. Storage and staging areas shall be at locations indicated or as otherwise approved. The storage and staging areas may be used for activities such as setup of an office trailer, parking of private vehicles, storage of materials and equipment, and for work activities.

See SECTION 01 51 00.00 28 TEMPORARY UTILITIES for information related to available utilities.

b. Office trailer shall be located near the Project warehouse at a location coordinated with the COR. Limited storage and staging will be available closer to the work area.

SECTION 01 55 10.00 28

c. Security at the storage and staging site(s) shall be the Contractor's responsibility. Install temporary security fencing in a manner approved by the Contracting Officer. Security fencing may not be installed in a manner that damages existing facilities, such as punching post holes in existing pavement.

1.4 CONTRACTOR ACCESS TO WORK AREA

All access to the work area for Contractor personnel, materials, and equipment will be from the lower parking lot on the Oregon side of the dam.

1.5 CONTRACTOR ACCESS TO FISHWAY

a. All Contractor access to the Adult Fishway and/or Tailrace areas shall be from the tailrace deck. Fishway will NOT be unwatered for work on this Contract. Coordinate Contractor access to these areas, with the COR a minimum of 1 week prior to anticipated access date(s).

Coordinate Dive Operations, and Unit outages, as specified in SECTION

01 35 10.00 28 DIVING.

b. COR approval is required prior to all Contractor access to the Tailrace area and/or Adult Fishway. Government personnel will complete and verify the following prior to COR approval of diver access to these areas:

1. All required turbine units, necessary for diver safety, will be offline, and tagged out.

2. Adult Fishway water supply pumps, will be off-line, and tagged out.

3. Fishway isolation logs, upstream of the work area, will be installed, if requested by the Contractor. Coordinate installation with the KO a minimum of 1 week prior to anticipated date required. Isolation logs will be installed as-is, but may stick. Government can minimize flow to the area, but cannot guarantee complete isolation. See SECTION 01 35 10.00 28 DIVING, paragraph ANTICIPATED DIVING ENVIRONMENT"Fishway Isolation Logs" for additional information.

c. The Contractor shall remove the existing Entrance Structure. Once the existing Entrance Structure is removed, the Government will install entrance bulkheads, prior to additional diver access to the Adult Fishway. Entrance bulkheads isolate the fishway from the tailrace area.

d. Entrance bulkheads may need to be removed in order for the Contractor to complete the Modified Entrance Structure installation.

e. Coordinate Government installation and removal of entrance bulkheads, with the COR, a minimum of 1 week prior to anticipated installation and/or removal dates.

1.6 INSTALLATION PLAN

The Contactor shall submit a detailed plan for removal of existing Lamprey Entrance structure, and installation of modified Lamprey Entrance structure, and all related items and/or features of this contract. The plan shall be complete and shall consist of drawings, sketches, SECTION 01 55 10.00 28 computations, catalog data, sizes of equipment, and any other information to fully describe methods of access for personnel, equipment, and materials, as well as removal and installation of the Lamprey Entrance structure. Include entrance bulkhead installation and removal, as well as walkway and/or telescoping weir removal and reinstallation, if required.

Fill all Contractor generated holes (from temporary anchors, unused holes created by the Contractor during the execution of the work, etc.) with an approved grout. All concrete is heavily reinforced.

1.6.1 Inspection of Government Property

Government Personnel will inspect items and equipment removed for work on this contract, that are to be reinstalled. Coordinate removal and reinstallation with the Contracting Officer (KO).

1.6.2 Telescoping Weir Operation

a. All operation of Telescoping Weir equipment (as well as any required removal, reinstallation, or dogging of the Weir) will be performed by the Government.

b. Coordinate required Telescoping Weir operation a minimum of 2 hours prior to anticipated movement of the Weir, during typical Government Work Schedule. Coordinate removal, reinstallation, dogging and/or undogging of the Telescoping Weir a minimum of 1 week prior to anticipated removal, reinstallation, and/or dogging operation dates.

c. See Section 01 14 00.10 28 PROJECT SITE RESTRICTIONS, paragraph "Government's Work Schedule", for additional information on Government Work Schedule and project support.

1.7 ROADWAY ACROSS THE TOP OF THE DAM

The roadway across McNary dam is not available for use by the Contractor.

Access across the Columbia River is over the interstate highway bridge located two miles downstream from the dam.

1.8 OVERHEAD POWER TRANSMISSION LINES

Check cover sheet in the Plans for approximate locations of overhead power transmission lines. Elevations are approximately 70 feet above the tailrace deck, but vary with temperature. Verify overhead transmission line location and elevation range before beginning work. Refer to EM 385-1-1 OPERATIONS ADJACENT TO OVERHEAD LINES for minimum clearance and other requirements.

1.9 TRAFFIC CONTROL AND PUBLIC ACCESS

Existing public roads and access roads shall be kept open to vehicle traffic at all times. Conduct this work in such a manner as will obstruct and inconvenience traffic as little as possible. When necessary to operate on or cross existing highways or roads, furnish signs, lights, and/or other necessary safeguards to safely control and direct the flow of traffic.

Obtain any and all required permits for such operations from the appropriate private or public authority at no additional cost to the Government.

1.9.1 Public Access Barriers

In areas where the public has access to the job site, construct temporary barriers around ongoing work with bright orange plastic fencing. The barrier shall be maintained until completion of the individual piece of work.

1.10 GOVERNMENT ROADWAYS AND DECK ACCESS RESTRICTIONS

a. Hauling of materials and equipment will be permitted on the project's roadways, bridges and decks, unless otherwise specified.

Submit transport loading diagrams indicating wheel loads and axle configurations for transport vehicles to haul loads exceeding HS-20, in accordance with AASHTO LRFD Bridge Design Specifications. (AASHTO LRFD Bridge Design Specifications defines HS-20 vehicles as having a gross vehicle weight of 72,000 lbs. and a maximum axle load of 32,000 lbs).

Approximate maximum load capacity on Project roadways 1.2 times higher than HS-20 load. All transport vehicles exceeding HS-20 loads must have approved transport loading diagrams before accessing Project roadways. Protect the various portions of the Project's structures from damage by traffic, prevent material from falling through the deck openings, and also keep the areas in use cleaned up and orderly at all times during use. Vehicle speeds, special precautions, and safety measures shall be as directed by the Contracting Officer.

b. At least one lane shall be kept open for Government vehicle traffic at all times on these roadways. There will be ongoing Government work on the tailrace deck near the Contractor work area. Contractor shall maintain vehicle access to all Government buildings and/or equipment, unless approved otherwise by the Contracting Officer.

1.11 DUST CONTROL PLAN

Responsible during dust generating activities to prevent the dust from spreading. Submit a written Dust Control Plan for approval.

1.12 HAULING MATERIAL

No material shall be allowed to drop off vehicles while in transit. In order to prevent any material from dropping off the vehicle onto local roads, all vehicles that have entered the material loading site shall be washed off prior to leaving the site. Wash-off site shall be in an area that has been approved by the Contracting Officer. Contractor is responsible for providing the wash water and truck washing system.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used) -- End of Section --