W912P5-16-B-0004_TSpecs.pdf

IFB No. W912P5-16-B-0004

US Army Corps Of Engineers Nashville District

DOWNSTREAM COFFERDAM

Kentucky Lock Livingston County, Kentucky

Technical Specifications

June 2016

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Downstream Cofferdam Kentucky Lock W912P5-16-B-0004 Livingston County

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 GENERAL REQUIREMENTS

01 00 05 GENERAL GEOLOGY AT KENTUCKY LOCK

01 22 00 PRICE AND PAYMENT PROCEDURES

01 32 01 PROJECT SCHEDULE

01 32 23 SURVEY

01 32 35 DIGITAL PHOTOGRAPHIC DOCUMENTATION

01 33 00 SUBMITTAL PROCEDURES

01 35 01 CONCRETE COFFERDAM FABRICATION AND ASSEMBLY

01 35 02 CONCRETE COFFERDAM TRANSPORTATION AND INSTALLATION

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 35 50 PROJECT SITE SECURITY AND AT/OPSEC PROCEDURES

01 36 02 CONTROL OF WATER

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 01 QUALITY CONTROL

01 45 02 QUALITY CONTROL SYSTEM (QCS)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

01 57 24 PROJECT IDENTIFICATION

01 78 00 CLOSEOUT SUBMITTALS

01 95 00 FORMS AND ATTACHMENTS

DIVISION 02 - EXISTING CONDITIONS

02 32 00 SUBSURFACE DRILLING, SAMPLING, AND TESTING

02 41 00 DEMOLITION

DIVISION 03 - CONCRETE

03 11 13 STRUCTURAL CAST-IN-PLACE CONCRETE FORMING

03 15 14 EXPANSION, CONTRACTION CONSTRUCTION JOINTS AND WATERSTOPS

IN CONCRETE FOR CIVIL WORKS

03 20 00 CONCRETE REINFORCING

03 30 00 CONCRETE: GENERAL REQUIREMENTS

03 30 01 CONCRETE: MATERIALS

03 30 02 CONCRETE: MIXTURE PROPORTIONING

03 30 03 CONCRETE: PRODUCTION

03 30 04 CONCRETE: PLACEMENT REQUIREMENTS

03 70 00 CONCRETE: MASS AND STRUCTURAL

DIVISION 05 - METALS

05 50 14 STRUCTURAL METAL FABRICATIONS

DIVISION 09 - FINISHES

09 97 02 PAINTING: HYDRAULIC STRUCTURES

DIVISION 13 - SPECIAL CONSTRUCTION

13 50 00 INSTRUMENTATION PROGRAM

DIVISION 26 - ELECTRICAL

26 00 00 BASIC ELECTRICAL MATERIALS AND METHODS

26 05 19 INSULATED WIRE AND CABLE

PROJECT TABLE OF CONTENTS Page 1

26 05 48 SEISMIC PROTECTION FOR ELECTRICAL EQUIPMENT

26 08 00 APPARATUS INSPECTION AND TESTING

26 20 00 INTERIOR DISTRIBUTION SYSTEM

26 24 16 PANELBOARDS

26 28 01 COORDINATED POWER SYSTEM PROTECTION

26 56 01 EXTERIOR LIGHTING WITH LED

DIVISION 31 - EARTHWORK

31 00 00 EARTHWORK

31 05 22 GEOTEXTILES USED AS FILTERS

31 11 00 CLEARING AND GRUBBING

31 23 06 BLASTING

31 41 16 METAL SHEET PILING

31 60 00 FOUNDATION PREPARATION

31 62 16.16 STEEL H-PILES

31 62 23.07 GROUTED STEEL PIPE PILES

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 92 19 SEEDING

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 31 19 STONE PROTECTION

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PROJECT TABLE OF CONTENTS Page 2

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 00 00

GENERAL REQUIREMENTS

PART 1 GENERAL

1.1 DESCRIPTION

1.2 COORDINATION WITH OTHERS

1.2.1 Coordination with Other Contractors Working Within the Same

General Area

1.2.2 Coordination with Land Owners and Utilities

1.2.2.1 General

1.2.2.2 Kentucky Department of Parks

1.2.3 Coordination with the Tennessee Valley Authority

1.3 REQUIRED SEQUENCING OF WORK

1.4 WATER SURFACE ELEVATIONS AND VELOCITY INFORMATION

1.4.1 Historical and Hypothetical Information

1.4.2 Operation of Kentucky Dam

1.4.2.1 Powerhouse Operation

1.4.2.2 Spillway Gate Operation

1.4.2.3 Lock Discharge

1.4.3 Forecasts and Coordination with TVA

1.4.3.1 Powerhouse Releases

1.4.3.2 Spillway Releases

1.5 SITE ACCESS

1.5.1 Marine Access

1.5.1.1 Existing Boat Basin (West Bank)

1.5.1.2 Existing East Bank Ramp

1.5.1.3 Lake Access

1.5.2 Land Access to Powerhouse Island

1.5.3 Land Access to West Bank Area

1.6 IMPACTS TO NAVIGATION TRAFFIC, OPERATION OF EXISTING LOCK, AND

REQUIRED CONTRACTOR PROVIDED HELPER BOAT

1.6.1 Navigation Channel Restrictions and Information

1.6.2 Required Contractor Provided Helper Boat

1.6.3 Impacts to Recreational Craft

1.7 DAM SAFETY EMERGENCY ACTIONS

1.7.1 Dam Safety Training

1.7.2 Dam Safety Condition Notification

1.8 COORDINATION CONFERENCES

1.9 PARTNERING

1.10 REFERENCES

1.11 CONTRACTOR'S STAGING AREA

1.12 SAFE CLEARANCE PROCEDURES

1.13 DAILY CLEANUP AND DISPOSAL

1.14 STORAGE OF EQUIPMENT AND MATERIALS

1.15 PROTECTION AND RESTORATION OF EXISTING FACILITIES

1.16 WORK BY THE GOVERNMENT CONCURRENT WITH CONTRACTOR WORK

1.17 EVALUATION OF CONTRACTOR PERFORMANCE

1.18 VETERANS EMPLOYMENT EMPHASIS FOR U.S. ARMY CORPS OF ENGINEERS

CONTRACTS

1.19 PROJECT SCHEDULE

1.20 SUMMARY OF WORK

1.20.1 Scopes of Base and Six Options

SECTION 01 00 00 Page 1

1.20.1.1 Base Scope

1.20.1.2 Option 1

1.20.1.3 Option 2

1.20.1.4 Option 3

1.20.1.5 Option 4

1.20.1.6 Option 5

1.20.1.7 Option 6

1.20.2 Special Considerations

1.21 MEASUREMENT AND PAYMENT

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.1 AVAILABILITY AND USE OF UTILITY SERVICES

3.1.1 Contractor Responsibilities

3.1.2 Interruptions of Utilities

-- End of Section Table of Contents --

SECTION 01 00 00 Page 2

SECTION 01 00 00

GENERAL REQUIREMENTS

PART 1 GENERAL

1.1 DESCRIPTION

This section of the Specifications provides general information and requirements; work and access restrictions; and required coordination with others. The work covered by these Specifications consists of furnishing all equipment, labor, and materials required for the construction of the downstream cofferdam and associated facilities as shown on the drawings and as described herein.

1.2 COORDINATION WITH OTHERS

Construction of features in this contract will impact or be impacted by many other organizations. The Contractor has primary responsibility to initiate the coordination and communication in a timely manner with the Contracting Officer to schedule activities of others and minimize or eliminate conflicts with others. The Contracting Officer will then determine the appropriate course of communicating with the others involved. In many cases, the Contracting Officer may determine that the Contractor should communicate directly with others while ensuring the Contracting Officer is timely informed of the decisions of the communications or actively involved in the communications. These direct communications are likely to include frequent communications with the Kentucky Lock Lockmaster and lock operator-on-duty ahead of any contractor activities that may affect the use or operation of the lock.

1.2.1 Coordination with Other Contractors Working Within the Same General Area

In addition to the provisions of Contract Clause 52.236-8 OTHER CONTRACTS, the following information is provided in the paragraphs below.

1.2.2 Coordination with Land Owners and Utilities

1.2.2.1 General

The Contractor's work area and laydown areas are located over or adjacent to underground sanitary sewer lines, underground water lines, underground and overhead electrical lines including high-voltage transmission lines, and underground and overhead telephone lines. Where known, the location of these utilities are shown on the Contract Drawings. No utility relocations are anticipated for the work activities in this Contract; however, if during the course of this Contract, it is determined that utility relocations are necessary, they shall be performed by the respective owners. The Contractor is (a) responsible for field verification of exact locations with the utility owner; (b) responsible for coordination and cooperation with utility owners and scheduling access to required work areas; (c) should not assume that this list is all inclusive, and should anticipate that other utilities may be encountered. If this should occur, it is the Contractor's responsibility to notify the Contracting Officer and to coordinate the relocation of the utility appurtenance with the utility

SECTION 01 00 00 Page 3 owner.

It is understood and agreed to that the Contractor has considered in his bid all of the permanent and temporary utility appurtenances in their present or relocated positions and that no additional compensation will be allowed for delays, inconveniences, or damages sustained by him due to any interference from the said utility appurtenances or the operation of relocating them.

1.2.2.2 Kentucky Department of Parks

The Contractor is advised that the work limits of this contract on the west bank are located on or adjacent to property leased by the Kentucky Department of Parks that contains Park facilities. The Contractor shall ensure that access is provided to Park personnel to these facilities at all times and that their activities are not hindered by the Contractor's activities. Procedures shall be developed by the Contractor to ensure this access is available when the Contractor's or sub-contractor's work crews are off-duty. These provisions shall be developed in consultation with the Park staff below and approved by the Contracting Officer. Point of contacts at the KY Department of Parks are: Park Manager, Kentucky Dam Village State Resort Park, (270) 362-4271 or Mr. John Drake, Kentucky State Parks, (502) 564-4940 ext. 412.

1.2.3 Coordination with the Tennessee Valley Authority

The Contractor is advised that all of the work limits of this contract are located on TVA property that contains TVA facilities, including the powerlines that cross the downstream cofferdam site. The Contractor shall ensure that access is provided to TVA personnel throughout the project site at all times and that their activities are not hindered by the Contractor's activities. Procedures shall be developed by the Contractor to ensure this access is available when the Contractor's or sub-contractor's work crews are off-duty. These provisions shall be developed in consultation with the TVA staff below and approved by the Contracting Officer.

Mr. Bill Stallion - KY Dam Powerplant Superintendent, (270) 362-4318.

Mr. Tom Walker - KY Reservation Maintenance Supervisor, (270) 362-4644.

1.3 REQUIRED SEQUENCING OF WORK

There are three interim milestones required in this contract as described in Contract Clause 52 211-10.

1.4 WATER SURFACE ELEVATIONS AND VELOCITY INFORMATION

The Contractor is advised that much of this project site is located directly below TVA's Kentucky Dam, and as such, is subject to large and rapid fluctuations in water surface elevations and velocities. Data on discharges, water surface elevations, and water velocities for the project site have been provided in the Contract Plans and Specifications to help the Contractor evaluate how the tailwater conditions below Kentucky Dam may impact his work activities. This data is described and other pertinent information is provided in the following sections.

1.4.1 Historical and Hypothetical Information

Plots of historical river elevations over the period of 1990 to 2016;

SECTION 01 00 00 Page 4 monthly and yearly tables of hypothetical flood frequency elevations;

monthly and yearly tables of hypothetical flood duration data are provided in Drawing Numbers 1012N401-27 through 30 and attached to Section 01 95 00 FORMS AND ATTACHMENTS. The hypothetical flood frequency and flood duration data was derived using standard statistical analyses of the maximum yearly and average daily tailwater elevations (feet, NGVD 29), respectively, at Kentucky Dam from the available data from 1948 to 2016. The monthly flow duration data can be used to get an idea of the percent of time that the Dam is releasing water through its spillway bays. The maximum sustained flow release through Kentucky Dam's turbines is approximately 65,000 cfs;

therefore, any flows higher than 65,000 cfs in the duration tables indicate that the dam would be using its spillway. The Contractor is cautioned that unusual weather patterns will cause the water levels and flows at the project site to vary from the probable elevations and flows predicted in the monthly hypothetical data. Also, the Tennessee River levels at this site are affected by both water releases out of Kentucky Dam and by the elevations of the Ohio River 22 miles downstream. It is not unusual for this project site to experience high tailwater elevations when very little water is being released from Kentucky Dam. The hypothetical frequency and duration data provided in these Contract Documents take into account the effects of the Ohio River elevations since the data was derived from actual historical Tennessee River elevations, not river flows. The provided flood elevation data can be compared to the topography of the project site as shown in the Contract Drawings to help determine the susceptibility of various locations within the project site to flooding.

1.4.2 Operation of Kentucky Dam

Since water conditions at the project site are affected to a large degree by the operation of Kentucky Dam, the following information is provided to the Contractor to help in his understanding of these impacts to his work activities.

1.4.2.1 Powerhouse Operation

The powerhouse has five generation units that can discharge up to 15,000 cfs each; however, a maximum sustained release per turbine under most circumstances is approximately 13,000 cfs. Tailwater elevations could change on the order of up to four feet due to releases out of the powerhouse. These fluctuations could occur within a period of less than three hours.

1.4.2.2 Spillway Gate Operation

Each of the 24 spillway gates has three leaves. The top leaf, or flood gate, is typically not installed. During spillway releases, the spillway gate closest to the powerhouse, gate number 1, is opened first by removing the middle leaf. As additional spillway releases are needed, the middle leaves of the gates are removed going from east to west (i.e., starting on the powerhouse side and progressing to the west) in the gate number sequence 2, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, and 23. If additional middle leaf openings are required, then they are opened in the sequence 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24. Each spillway bay releases approximately 10,000 cubic feet per second (cfs) with the middle leaf removed. This release amount varies depending on the lake water elevation. If additional spillway releases are needed after all 24 middle leaves are removed, then the lower leaves are removed in the gate number sequence 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, and 1. Removal of the lower leaf adds an additional

SECTION 01 00 00 Page 5 discharge to each spillway bay of approximately 16,000 cfs (i.e., total discharge of approximately 26,000 cfs per spillway bay). This discharge amount also varies by lake level and tailwater level. No more than one gate leaf is removed per hour (i.e., the fastest the 24 middle leaves could be removed is 24 hours). However, this maximum gate removal rate is not uncommon, and combined with the powerhouse releases, the dam's discharge can go from 5,000 cfs to 300,000 cfs in a 24 hour period. The gate leaves are reinstalled in the reverse order described above for their removal.

1.4.2.3 Lock Discharge

While the operation of the powerhouse and spillway is controlled by TVA, the operation of the navigation lock at Kentucky Dam is operated by Corps of Engineers personnel. This is a high use lock that operates 24 hours a day and usually experiences eight to twelve discharge cycles each 24 hour period. During low tailwater elevations, the Kentucky Dam tailwater area can experience an increase in water surface elevation of up to one foot during a lock discharge cycle. It takes approximately 11 to 20 minutes for a complete lock discharge.

1.4.3 Forecasts and Coordination with TVA

1.4.3.1 Powerhouse Releases

As an existing public service through a TVA telephone number/internet site (1-800-238-2264, #33 or " https://www.tva.gov/Environment/Lake-Levels/Kentucky"), the Contractor can access the anticipated schedule of operations for the hydropower units for the next day, starting at 6:00 p.m. on the day before. In addition, the Contractor can call TVA's River Operation office at 865-632-6065 to obtain average daily dam discharge forecasts that cover a timeframe 8 days into the future. However, due to limited accuracy in weather forecasting and the complexity of the power release scheduling, these 8 day forecast can be very inaccurate.

1.4.3.2 Spillway Releases

A communication system will be established that will allow TVA's onsite dam operations personnel to inform the Contractor of impending spillway gate changes as soon as possible after a decision is made by TVA on the gate change schedule. Under some flood conditions, the need and approximate scope of the start of these spillway operations may be known up to two days in advance of the spillway releases. However, in most cases, the advance knowledge of the start of spillway operations will be less than two days.

In some cases, the warning for the impending start of spillway operations may only be a few hours. For example, during the summer of 1994, an isolated, intense summer thunderstorm dumped several inches of rainfall within the local watershed of the Kentucky Lake and Barkley Lake pools that caused Kentucky Dam to start spillway releases in the overnight hours after the afternoon/early evening storm. This storm event was so isolated, it did not affect any other TVA reservoirs.

1.5 SITE ACCESS

In addition to the site restrictions described in the above Sections and elsewhere in these Specifications and Contract Plans, the Contractor is advised that other access restrictions will apply to both land and water based activities in the project work area. These restrictions are defined in the following sections. In addition, the Contractor shall adhere to all

SECTION 01 00 00 Page 6 load restrictions and speed limits on public roads when hauling material to and from the project site.

1.5.1 Marine Access

The Contract Plans show three locations for the Contractor to gain access to marine equipment from the shore and are further described in the following sections. The use or construction of other marine access locations within the project area will not be permitted without prior written approval by the Contracting Officer. It is likely that permission to use an alternate marine access location will depend at least partially on an environmental assessment as described in Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS of these Specifications.

1.5.1.1 Existing Boat Basin (West Bank)

The west bank boat basin and its existing, unimproved earthen ramp as depicted in Drawing No. 510N102A can be modified by the Contractor to facilitate access to marine equipment, including dredging. The Contractor is advised that under low tailwater elevation conditions, the maximum depth of the basin is less than 5 feet deep and contains remnants of H-piles from the foundation for two temporary bents. The results of a hydrographic survey of this basin performed in March 2016 [pending] is attached to Section 01 95 00 FORMS AND ATTACHMENTS to provide the approximate bottom contours of the basin. If the Contractor elects to dredge this basin, then he must comply with the tailwater restrictions outlined in paragraph 1.4 WATER SURFACE ELEVATIONS AND VELOCITY INFORMATION. The Government may require that any improvements constructed by the Contractor to facilitate the usage of this site as marine access shall remain the property of the Government as determined by the Contracting Officer. Examples of improvements that may be retained by the Government include concrete or asphalt paving and mooring facilities.

1.5.1.2 Existing East Bank Ramp

An unimproved ramp is located on the east bank as shown in Drawing No.

510N102A. The Contractor is advised that the present configuration of this ramp may not be suitable for his marine access requirements although it has been used by prior construction Contractors. The Final Supplemental Environmental Impact Statement has assessed the impacts of dredging 6,200 cubic yards of material at this location to better facilitate the off-loading of materials from barges. However, mussel relocation is required before dredging of this area and the dredging will have to be done in accordance with the seasonal fish spawning restriction. The Contractor will not be allowed to expand on this proposed plan without prior approval and environmental clearances. If approved, the dredging and any other improvements will be at the option of the Contractor and will be performed at his expense. If the Contractor elects to perform dredging or construct improvements, his work plan will require prior approval by the Contracting Officer. The Government will have the option to retain ownership on any improvements at the end of this Contract as determined by the Contracting Officer.

1.5.1.3 Lake Access

Previous contractors have offloaded equipment and material from barges in the area shown in Drawing No. 510N102A. However, the existing underwater topography may affect the viability of this location depending on lake levels and upon the configuration of the vessels being used. Any

SECTION 01 00 00 Page 7 modifications to underwater topography will require to conform to the requirements of Section 01 57 19, TEMPORARY ENVIRONMENTAL CONTROLS, of these Specifications and will require approval of the Contracting Officer.

1.5.2 Land Access to Powerhouse Island

The Contractor is advised that land access to the downstream tip of the Powerhouse Island will require transit through a public parking area. This parking area is heavily used by the public during some time periods and by personal and commercial vehicles involved in construction activities for TVA on the island. Any and all transit of the Contractor's equipment and material delivery trucks through this parking lot will require the presence of at least two flagmen provided by the Contractor. The Contractor may close the landside row of parking places on the riverside half of the parking lot during his transit periods. If the Contractor elects to use this access route, a pre-condition survey of the route on all TVA roads and bridges will be required to be performed by the Contractor before its use.

Upon completion of its use by the Contractor, a post-condition survey of the route the by the Contractor will be required. Upon comparison of the two surveys, the Contracting Officer will determine if and how much repair work will be required of the Contractor to restore the route to its original condition. In addition, if the Contracting Officer determines that noticeable and unacceptable damage is occurring to the route during its use, he may direct that the Contractor immediately perform interim repairs. The cost of all measures described in this Paragraph will be considered incidental to the Superstructure Contract and will be the responsibility of the Contractor. It should be noted that the use of this route will require transit over a TVA bridge. The loading restrictions on all TVA bridges is HS-20. Access to the powerhouse island via the abandoned bridge from the east bank will not be allowed.

1.5.3 Land Access to West Bank Area

There are two access roads off of KY Hwy 282 to the west bank project area. The southern route traverses through a shared public road. All truck traffic entering the west bank project area will be required to use this southern access route. The northern access route contains a timber bridge with an 18,000 pound load limit and traverses a popular recreation area. The Contractor's personnel will only be allowed to access the site using cars and light trucks on this northern route. It will be the Contractor's responsibility to maintain a credible separation line to keep the public from entering his work area upstream of the downstream boundary of the boat basin.

1.6 IMPACTS TO NAVIGATION TRAFFIC, OPERATION OF EXISTING LOCK, AND REQUIRED

CONTRACTOR PROVIDED HELPER BOAT

The Contractor is advised that the development of his work plan and its execution shall not impede commercial navigation through the project site, except as noted elsewhere in these Specifications. Specific criteria is provided in the following two sections.

1.6.1 Navigation Channel Restrictions and Information

The Contractor is advised that the project area is heavily traversed by commercial cargo vessels on the Tennessee River. Most tows traveling this reach of river are in a 5L x 3W configuration of jumbo barges resulting in tows of approximately 1200 feet in length and 105 feet in width. Since the vast majority of tows require a double lockage through the 600 foot long

SECTION 01 00 00 Page 8 lock, total lockage times of 2.5 to 3 hours are common. In calendar year 2015, an average of 8.3 tows locked-through Kentucky Lock each day. As such, it is the most utilized lock in the Ohio River system and has an average delay time per tow at the top or near the top of any lock in the nation. Construction of this Downstream Cofferdam is expected to have negative impacts on the efficiency of the existing Kentucky Lock in passing vessels. However, it is the intent of these Plans and Specifications to minimize those negative impacts during construction. As a result, the Contractor's work plan and resulting bids should reflect this criteria.

The Contractor's work area for much of the downstream cofferdam is immediately adjacent to the existing lock's lower approach channel. It is expected that the Contractor's approved work plan and approved safety plan will restrict many of the Contractor's work activities while a vessel is transiting the lower approach channel. Therefore, it is important to understand how and how long it takes vessels to transit this lower approach under different modes of lock operations.

For the purposes of these Specifications, the definition of a vessel "transiting" the lower approach includes both upbound and downbound vessels when they are moving past the Contractor's work area (i.e., between Stations 10+00B to 19+00B) and are not actively engaged on the lock's lower river approach wall. For downbound tows where the helper boat is pulling a cut out of the chamber to tie to the lower river approach wall, this would not be considered a "transit" in the lower approach, even if the tow extends downstream of Station 10+00B. Likewise for an upbound tow that is tied to the lower river approach wall then moves further upstream to tie-off after its cut is taken into the chamber, this move would not be considered a "transit." Since most lockages take on the order of 2.5 hours to complete and if the lock operates under the mode of one vessel lockage upbound followed by a downbound lockage, there will be a time window of at least 5 hours where a commercial vessel does not transit the lower approach. When the lock operates where an upbound tow is followed by another upbound tow (i.e, "2 Up" mode), then there is a window of about 2.5 hours to 3 hours between transits. If the first upbound tow is 600' long or less in a "2 up" mode, then there may only be on the order of 30 minutes between lower approach transits. Either an upbound or downbound transit usually lasts less than 10 minutes.

The Contractor will not be allowed to have equipment or personnel in the buffer zone as shown in Drawing Number 510N103 when a vessel is transiting the lower approach. During the excavation phase of construction, the buffer zone will be minimum of 35.0 feet extending from the extension of the landward face of the existing lock. Equipment would include any physical items obstructing a vessel including PVC pipe that may be used to load explosives in a hole. After construction is initiated on the concrete segmental wall, the buffer zone is narrowed to approximately 23 feet, or the distance to the edge of the completed concrete segmental wall. These buffer zones are considered minimums and the Contractor's safety and work plans should address all work activities while vessels are transiting the lower approach. For example, it would not be safe for divers to be in the water 40 feet from the edge of the channel during a vessel transit if they are not protected by an immovable object.

During some phases of construction, it will not be possible for the Contractor to adjust his work activities to keep equipment and personnel outside of the buffer zone in between vessel transits. In those cases, the existing lock will cease to pass vessel traffic until such time as the Contractor's work activities will allow it. These "lock closures" will be

SECTION 01 00 00 Page 9 required to be requested by the Contractor to the Kentucky Lock Lockmaster at least one week in advance, if possible, and the contractor shall notify the ACO at the same time. The Contractor will be allowed a maximum of 30 days of total lock closures during this contract performance period.

Measurement of these lock closures is described in Section 01 22 00 PRICE AND PAYMENT PROCEDURES. -Anticipated lock closures and their durations shall be included in the Contractor's Project Schedule (Section 01 32 01).

The project schedule will not be approved by the Government if anticipated lock closures exceed 30 days. If actual, total lock closures are less than 30 days, then the contractor will be due an incentive payment for every hour below 30 days but above 10 days. The measurement and payment for this incentive is described in Section 01 22 00 PRICE AND PAYMENT PROCEDURES.

When the Contractor plans to have marine equipment operating in the navigation channel or buffer zone, Kentucky Lock will attempt to operate in the "one up, one down" lockage mode. Therefore, it may be possible for the Contractor to develop plans to operate under these minimum 5 hour time windows when he could have marine equipment located in the navigation channel or buffer zone. If there is more than one vessel waiting to go upbound or downbound and no corresponding vessels waiting to lock in the other direction, then the Kentucky Lock Lockmaster will make an effort to delay these lockages to ensure a minimum 5 hour time window for the Contractor if the Contractor is actively working in the navigation channel. It is not expected that these special lockage delays will be allowed more than three times over any 7 day period unless traffic is light enough to support it in the view of the Kentucky Lock Lockmaster. They also will not be allowed at any time if vessel traffic levels are too great in the view of the Lockmaster. There are time periods when no vessels are waiting to lock through, and thus, the time window allowed for the Contractor to work in the navigation channel would be greater than 5 hours.

The Contractor is advised that the depth of the lower approach channel is at bare minimum levels when water elevations approach the 300 foot level.

As such, the Contractor will be required to develop work plans to minimize the possibility of any of his equipment or materials being deposited in this channel and become a hazard to navigation. Special considerations for this event are included in Section 31 23 06 of these Specifications while underwater blasting and excavation activities are underway. The ACO may require the Contractor to employ survey and removal methods at other times during construction if equipment or material is suspected of impeding navigation due to the Contractor's activities.

The Contractor is also advised that during a lock discharge cycle, the water surface elevations can increase by up to a foot and that flow velocities can be experienced in the lock's lower approach. These increases are more severe during low river elevations and during maximum emptying valve operations at the lock. During the maximum emptying valve operating speed, the lock can complete its discharge cycle in approximately 11 minutes. The resulting flow velocities immediately downstream of the lock can be up to about 5 feet per second. The lock can and will operate with a slower emptying valve operation upon the request of the Contractor.

This will result in an approximately 20 minute discharge cycle where the resulting average peak velocities will be reduced by almost one-half from those experience during the maximum emptying valve cycle. If the contractor has sensitive activities that require even lower velocities, then even slower valve operations will be considered for limited occurrences.

The Lockmaster or lock operator on duty can be reached by phone at (270)

SECTION 01 00 00 Page 10

362-4226 or by Marine Band Radio VHF - FM 156.8 MHz (Ch.13) or 156.7 MHz (Ch.14). Channel 16 is the authorized reply and distress frequency, and locks are not permitted to use this frequency except in an emergency involving the risk to immediate loss of life or property. The Contractor is advised that under most circumstances, he will not be allowed to use or impede the use of the two Federal mooring cells immediately downstream of the powerhouse island or the two cells on the left descending bank just upstream of the I-24 bridge. Only when given special permission by the Kentucky Lock Lockmaster will the Contractor be allowed to use these mooring facilities.

1.6.2 Required Contractor Provided Helper Boat

The Contractor will be required to provide a helper boat to assist commercial vessels in safe transit of the lower approach and shall be dedicated solely to this task. The helper boat must be available 24 hours a day, seven days a week while construction activities are ongoing adjacent to the lower approach or when the Contractor has equipment or facilities in an area that could be at risk of an allision by a commercial vessel. The Contractor's work plan and safety plan should determine and clearly state when the helper boat will be required. During the excavation phase when the two month fish spawning restriction is in place, it is not expected that the helper boat will be required.

The helper boat must have a minimum of 1200 horsepower. It shall be configured to ensure it has sufficient height to attach and push an empty hopper barge. All of its electronic, environmental, safety and fire-fighting equipment shall be in good working order and meet established marine industry and US Coast Guard standards. The government reserves the right to disqualify a vessel if the vessel's condition or seaworthiness is judged unacceptable or it is deemed unable to perform the task safely. In addition to the vessel's master, the vessel shall be crewed by a minimum of one deckhand while underway. The Contractor shall adhere to all requirements of the Corps of Engineers Safety and Health Requirements Manual, EM 385-1-1. The pilot and crew will not be allowed to be on duty for more than 12 hours in any 24 hour period.

Measurement and payment for the helper boat is described in Section 01 22 00

PRICE AND PAYMENT PROCEDURES.

1.6.3 Impacts to Recreational Craft

The Contractor is advised that the work area of this Contract is a popular area for recreational and commercial craft involved in fishing. During optimum water and weather conditions, it is not unusual for over 30 fishing boats to be present in the one-half mile reach of river below Kentucky Dam. Even during inclement weather, except when more than two spillway bays are open, it is unusual not to see some fishing boats below the dam in daylight hours. Many of these boats motor up to just below the dam, then fish as they drift down to a point below the existing bridges' alignment, then motor back up to the dam and repeat the sequence. The Contractor's work plan and safety plan shall be developed with this knowledge and with the goal to minimize the impacts to these vessels. It is expected that this possible interference is most likely during construction of the training dike. In previous environmental documents, the Government has noted that it is expected that isolated areas of the tailwater reach below Kentucky Dam will be closed to these boats while construction is ongoing.

It is the responsibility of the Contractor in the development of his work plan and safety plan to determine the need and mechanism for any closures

SECTION 01 00 00 Page 11 of the tailwater area to these boats. Conversations with affected agencies have indicated that the presence of enforcement vessels may be prudent during some periods of construction to ensure the safety of the vessels in the area. The costs of implementing any restrictions deemed necessary by the approved safety plan, including enforcement boats and personnel, will be considered incidental to the cost the Downstream Cofferdam construction and are the responsibility of the Contractor.

1.7 DAM SAFETY EMERGENCY ACTIONS

1.7.1 Dam Safety Training

At least one representative from each of the Contractor's and all of his subcontractors' work crews that are involved in excavation work shall be required to attend dam safety training. This training will be provided on-site by TVA personnel and shall consist of less than three hours of instructional video tape and site specific instructions. The training will be provided at no cost to the Contractor or subcontractors. This training is required prior to any of the described work effort above.

1.7.2 Dam Safety Condition Notification

If a potential condition threatening dam safety is noticed by the Contractor or subcontractor employees, the Contractor should immediately notify the TVA's senior powerplant operator on duty at 270-362-4569. The senior operator will then dispatch a TVA employee to view and report on the condition. As soon as possible, the Contractor shall also notify the Contracting Officer's Representative at the site or the Resident Engineer.

If the situation is a potential or actual Dam Safety Emergency, the senior powerplant operator will issue guidance through the Contracting Officer's Representative or the Resident Engineer on actions the Contractor must take to stabilize the dam safety situation or TVA will take actions in an attempt to stabilize the dam safety situation. In the event the Contracting Officer's Representative or Resident Engineer are not available, and the situation is considered critical, the senior powerplant operator may issue this guidance directly to the Contractor. Any part of the contract work delayed or otherwise impacted due to a dam safety concern as described herein will be addressed in accordance with the Contract Clause 52.242-14 SUSPENSION OF WORK.

1.8 COORDINATION CONFERENCES

Routine coordination conferences will be scheduled by the Contracting Officer throughout the life of this project. Coordination conferences will be held to discuss contract administration, Contractor quality control, phasing, scheduling, and other aspects relating to this construction. The Corps of Engineers and the Contractor will be represented at each of these meetings. Coordination conferences will be scheduled to occur when notified by the Contracting Officer.

1.9 PARTNERING

In order to most effectively accomplish this contract, the Government urges the Contractor to join the Government in establishing a cohesive and professional project management team. Through this "partnering" relationship both entities would strive to draw on the strengths of each organization for the ultimate goal of assuring that the project’s intended results are achieved, within budget and on schedule. This endeavor seeks an environment that nurtures team building, cooperation and trust between

SECTION 01 00 00 Page 12 the Government and the Contractor. The partnering relationship would be bilateral in make-up, and participation will be totally voluntary.

The first step in initiating the concept would be a joint project management team "partnering" conference attended by multiple officers from each organization representing management and the key jobsite staff of each entity. The initial conference would be held within the first thirty (30) days following contract award. The Resident Engineer would chair the conference, establish its agenda and distribute minutes of the meeting. A professional facilitator acceptable to both parties would lead the participants of the session, through the steps of team building and the formation of a problem solving mechanism within the group. The conference duration would be no more than one day. Location of the conference would be offsite within a 60 mile radius of the jobsite at a facility which offers conference rooms and food service. All costs in connection with rented facilities and the facilitator would be shared equally by the Government and the Contractor. Each organization would pay other costs of its respective employees attending the conference.

Additional partnering sessions would be held no less than biannually.

Implementation of the partnering concept and philosophy would be an on-going process.

1.10 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.

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

ER 385-1-31 (2009) The Control of Hazardous Energy

1.11 CONTRACTOR'S STAGING AREA

The Contractor may use areas within the defined work limits (see sheet 510N102A), excluding Disposal Area D, as staging area. The area identified as "temporary exploratory work area" shall not be used as laydown or staging area. The building of structures, the erection of tents or other forms of protection will be permitted only at such places as the Government shall approve, and the sanitary conditions of the grounds in or about such structures shall at all times be maintained in a satisfactory manner.

Temporary Contractor facilities provided during Construction shall be removed prior to final acceptance from the Government. As a minimum the area shall be left looking "broom clean" and at least as clean as before the structure placement.

1.12 SAFE CLEARANCE PROCEDURES

Project personnel use A Safe Clearance System, as stated in ER 385-1-31 and amended by the Nashville District to ensure continuity of service and safety to personnel and equipment. Any work performed which requires taking the Project's operating equipment out of service will be done only after a formal clearance is obtained by the Contracting Officer with 48-hour minimum notice. Contractor personnel shall not violate clearance.

Any violation of Safe Clearance Procedures will be grounds for removal of

SECTION 01 00 00 Page 13 the offender(s). Up to five copies of the Nashville District Safe Clearance Procedure will be supplied to the Contractor upon request.

1.13 DAILY CLEANUP AND DISPOSAL

Work areas shall be kept reasonably neat on a daily basis. Debris resulting from the work, such as empty paint cans, packing cases, scrap lumber, oil and grease spills, and other debris shall be collected, removed, and disposed of off-site at least once per week. Government trash cans, dump boxes and other containers shall not be used. Liquid waste shall not be disposed of in existing drains.

1.14 STORAGE OF EQUIPMENT AND MATERIALS

Storage of equipment and materials will be permitted only in designated staging areas. A minimum access space of three feet shall be maintained between the Contractor's stored items and existing facility equipment.

1.15 PROTECTION AND RESTORATION OF EXISTING FACILITIES

Existing facilities shall be protected whether or not shown on the drawings. Upon completion of the work, existing facilities, not included as a portion of the work, shall be left in a condition equal to the original condition prior to the contract. Costs for repair and restoration of any facilities shall be considered to be incidental to and included in the contract price.

1.16 WORK BY THE GOVERNMENT CONCURRENT WITH CONTRACTOR WORK

The Government will limit interference with the Contractor's work to the maximum reasonable extent and the Government and Contractor shall coordinate as necessary.

1.17 EVALUATION OF CONTRACTOR PERFORMANCE

The Contractor's performance will be evaluated in accordance with FAR Part

42.15 in the areas of quality, schedule, cost control, management, utilization of small businesses, and regulatory compliance at minimum. The evaluation will include a written narrative and rating of either exceptional, very good, satisfactory, marginal, or unsatisfactory for each. The format for the evaluation is attached at the end of Section

01 95 00 FORMS AND ATTACHMENTS.

The Contractor's review of the evaluation shall be completed electronically at the CPARS website, http://www.cpars.gov. This website also includes guidance and the user's manual.

Upon contract award, the Contractor shall provide the Contracting Officer with the name and e-mail address of the Contractor's Representative to be registered into the system. Following initial completion by the Government, the Contractor will have sixty (60) calendar days to review, comment, and return the evaluation.

1.18 VETERANS EMPLOYMENT EMPHASIS FOR U.S. ARMY CORPS OF ENGINEERS CONTRACTS

In addition to complying with the requirements outlined in FAR Part 22.13, FAR Provision 52.222-38, FAR Clause 52.222-35, FAR Clause 52.222-37, DFARS

222.13 and Department of Labor regulations, U.S. Army Corps of Engineers (USACE) Contractors and subcontractors at all tiers are encouraged to

SECTION 01 00 00 Page 14 promote the training and employment of U.S. veterans while performing under a USACE contract. While no set-aside, evaluation preference, or incentive applies to the solicitation or performance under the resultant contract, USACE Contractors are encouraged to seek out highly qualified veterans to perform services under this contract. The following resources are available to assist USACE contractors in their outreach efforts:

Federal Veteran employment information at:

http://www.fedshirevets.gov/index.aspx

Department of Labor Veterans Employment Assistance:

http://www.dol.gov/vets/

Department of Veterans Affairs-VOW to Hire Heroes Act:

http://benefits.va.gov/vow/

Army Wounded Warrior Program:

http://wtc.army.mil/modules/employers/index.html

U.S. Chamber of Commerce Foundation-Hiring Our Heroes http://www.hiringourheroes.org/

Guide to Hiring Veterans - Reference Material:

http://www.whitehouse.gov/sites/default/files/docs/white_house_business_council_-_ guide_to_hiring_veterans_0.pdf

1.19 PROJECT SCHEDULE

The Contractor shall provide project schedule submittals in accordance with Contract Clause 52.236-15 SCHEDULES FOR CONSTRUCTION CONTRACTS and as specified in Section 01 32 01 PROJECT SCHEDULE.

1.20 SUMMARY OF WORK

1.20.1 Scopes of Base and Six Options

1.20.1.1 Base Scope

The scope of the Base contract has been developed to ensure that it can be awarded based upon available funds and that it contains the critical path activities required to meet the performance period of the contract.

Significant features of work included in the base contract are:

a. Underwater excavation for the entire cofferdam that includes both overburden and rock. An onsite disposal area in close proximity to the cofferdam is provided. This activity is expected to have the majority of time impacts to the operation of the existing lock.

b. 221 linear feet of concrete segmental wall construction. This quantity was chosen to allow the Contractor to commence construction activities at either the upstream or downstream end of the wall or both at the same time. Therefore, it is a combination of the five downstream monoliths and the four upstream monoliths. It is not the intent of the Government to dictate the sequence of construction and as much latitude as possible has been incorporated into the resulting scope of work.

Bear in mind that the Government's design intent and the development of this contract's period of performance requires that Segment M-31C be constructed to full height prior to commencing the construction of Cell

1. If the Contractor chooses not to construct in this sequence, he

SECTION 01 00 00 Page 15 must then demonstrate to the satisfaction of the Contracting Officer that it is feasible to do so and that Segment M-31C can be constructed after commencing or completing Cell 1.

c. Two circular sheet pile cells (Cells 1 and 2) and their connecting arc, 1A. Their interiors are to be excavated to the top of rock and then cleaned to allow a tremie concrete plug to be placed. They have a granular fill and then are capped with 18" of dense graded aggregate.

d. A helper boat is to be provided by the Contractor for 24 hours a day, seven days a week while work activities and contractor equipment is located in the lower approach to the existing lock.

e. The Contractor will be tasked to operate and maintain an existing dewatering system for the upstream cofferdam and its instrumentation system.

f. Several existing stockpiles of sheet piles will be removed and become the property of the contractor; however, all sheet piles used in this contract shall be new sheet piles.

g. Demolition and special construction techniques are included for the tie-in of the new segmental wall to the existing lock's lower approach wall.

h. Both overwater and land-based exploratory drilling. Required phased prosecution of these efforts are described in Contract Clause 52.211-10.

i. Two guard cells located immediately downstream of the cofferdam. One is concrete filled while the other is granular filled. Required phasing of their construction is also included in Contract Clause 52.211-10.

1.20.1.2 Option 1

The scope of this option is solely to continue construction of the segmental concrete wall. Its linear footage has been developed to allow the completion of monolith segments M-25C and M-26C or M-26C and M-27C but it is not the intention of the Government to dictate their actual sequence of construction.

1.20.1.3 Option 2

The scope of this option is solely to continue construction of the segmental concrete wall. Its linear footage has been developed to allow the completion of monolith segments M-23C and M-24C or M-28C through M-30C but it is not the intention of the Government to dictate their actual sequence of construction.

1.20.1.4 Option 3

The scope of this option is solely to continue construction of the segmental concrete wall. Its linear footage has been developed to allow the completion of monolith segments M-22C or M-31C but it is not the intention of the Government to dictate their actual sequence of construction.

SECTION 01 00 00 Page 16

1.20.1.5 Option 4

The scope of this option is solely to construct an underwater stone dike off the downstream tip of the powerhouse island.

1.20.1.6 Option 5

The scope of…