Attach 3 - Scope of Work (23R1003).pdf

SEDIMENT REMOVAL AND STORM WATER

LINER REPLACEMENT

#DPEZ192204

Scope of Work

2 February 2023

PROJECT LOCATION

217 Dell Range Blvd

Cheyenne, WY 82009-4799

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GENERAL SCOPE OF WORK

Project Objective:

The Wyoming Military Department (WYMD) is requesting proposals for the removal of sediment from the storm water retention pond and replacement of the existing pond liner at the Wyoming Air National Guard (WYANG) installation. This project will also include the replacement of the culvert pipe or interceptor ring surrounding the pond high-level outfall.

Location:

The site for the project is the WYANG Base.

153d Airlift Wing 217 Dell Range Blvd Cheyenne, WY 82009

Project Funding:

1. 100% Federally Funded

2. The funds are Sustainment, Restoration, and Modernization funds and all work must conform to the ANG regulations and requirements for such funds.

PROJECT DETAILS

Period of Performance:

180 Days

CONTRACTOR RESPONSIBILTIES - The contractor shall perform sediment removal and liner replacement services in accordance with the following:

1. Contractor shall coordinate schedule with the WYANG to ensure work will not conflict with mission operations and site personnel can prepare the pond for work to commence.

2. All personnel accessing the installation as part of the project must submit requested information by the 153d Security Forces and pass a background check within three days prior to arrival. All large vehicles may be subject to vehicle inspections upon each entry.

3. All individuals driving vehicles and equipment near the pond must attend Airfield Drivers Training. This is a 30 minute training and can be conducted the first day of on-site work.

4. All pond sediment must be removed and disposed of off-site in accordance with all applicable state and federal regulations.

a. During sediment removal water flow to the pond will be minimized by installation personnel, but the contractor will be responsible for the removal of any water flow to the pond after work begins to include that as a result of storm events.

b. The contractor shall submit an erosion and sedimentation control plan for the work area. The plan must include dewatering techniques, sampling requirements, and demonstrating outfall protection.

The contractor must ensure that any discharge water meets the current permit requirements, which are no more than 30 mg/l TSS, and 10 mg/l oil and grease on a weekly sampling basis. G

5. Care shall be taken while working around the existing pond infrastructure to prevent damage to the inlet and outlet flow lines and structures.

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6. Contractor will install a new reinforced polyethylene (RPE) pond liner of at least 40-mil thickness in accordance with the respective liner manufacturer’s installation specifications. Liner material must be manufacturer warrantied for at least 10-years of UV exposure.

a. Liner must wrap around all three concrete penetrations and terminate within 12” of the top of each pipe. Liner material around concrete inlet and outlets must be sealed to the concrete in accordance with manufacturer’s specifications to provide a water tight seal. All seams in the liner must be welded and installed in accordance with the manufacturer’s specifications.

7. Place filled ballast tubes on liner in an arrangement specified in the “General Work and Specifications” section of this SOW, and with an adequate quantity to prevent the liner from lifting or “bubbling up” and allowing shifting. Ballast tube material must be a reinforced polyethylene material of at least 30-mil thickness. The contractor shall submit their plan accomplishing this prior to construction. G

8. Contractor shall install a new corrugated galvanized steel pipe around the high-level outlet that matches the specifications of the existing pipe. The new pipe must be supported in a manner that is acceptable to the WYANG and prevents tearing of the pond liner material. Final elevation of the placed corrugated pipe must be no lower than six inches above the high-level concrete outfall. Contractor shall demonstrate compliance by submitting shop drawing for this requirement. G

9. The contractor must complete work and return the pond to operation within 45 days of the pond being taken out of service. Work must be initiated within 120 days of contract being awarded. All project work must be complete and the pond released to the installation no later than September 31, 2023. The contractor shall include this requirement in the Erosion and Sedimentation Control Plan (see above). G

WYANG Responsibilities – The Wyoming Air National Guard shall prepare the pond for work in accordance with the following:

1. The WYANG will drain the pond of water to the top of the sediment layer prior to the contractor’s arrival.

2. The installation will make its best effort to minimize any flow entering the storm water system draining to the pond. However, the base has no means to eliminate stormwater and runoff from reaching the basin.

3. A staging area will be provided for equipment to park overnight and on weekends.

4. The WYANG will coordinate with Security Forces to facilitate contractor work to continue on weekends and off days if necessary. The installation hours are 0730-1630 with the installation closed weekends, federal holidays, and every other Friday.

About the Wyoming Military Department:

The Wyoming Military Department provides day to day command and control, guidance, policies, and administrative and logistics support to the Wyoming National Guard and Wyoming Civil Air Patrol.

We support the national objectives by providing highly trained units capable of mobilizing for active federal service in time of war or national emergencies; to provide units organized, manned, trained, and equipped to assist civil authorities for the protection of life and property; to preserve order and public safety under direction of the Governor; and to protect lives and property through direction and coordination of state and local government.

By statute, that support also includes safekeeping, repair and disposition of Wyoming Military Department real estate, equipment, facilities and buildings; publishing necessary regulations, orders and reports; maintaining records;

and hiring personnel to carry out those missions.

General Statement of Work and Specifications:

Contractor must be able to provide services personnel, equipment and supplies in and around the WYANG installation in Cheyenne, Wyoming.

The purpose of this project is to remove sediment that has accumulated in the pond portion of the installation storm water drainage system and replace the existing pond liner to ensure discharge remains in compliance with state

SEDIMENT REMOVAL & STORM WATER LINER REPLACEMENT Page 4 of 14 environmental regulations. After liner installation, a new interceptor ring will be placed around the high-level outlet replacing the existing deteriorating ring.

The pond is oval in shape with overall dimensions of 145’ long by 101’ wide for the upper water level. There is an additional 10’ of exposed liner above the water level to the trench anchor making the overall exposed liner dimensions 165’ long by 121’ wide. The pond is 8’ deep with a side grade of 5:1. Refer to the drawing below for overall shape. The pond is surrounded by a 7’ chain link fence with an access road to the west coming from the installation. The west section of fence facing the installation may be removed to facilitate work as long as it is reinstalled to the original condition following the required pond work. There is no vehicle access directly off Dell Range Boulevard.

Image 1: Overview of the WYANG Storm Water Pond looking west towards the installation

CMP shall be replaced in kind. Provide shop drawing.

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Image 2: Overall pond dimensions

Image 3: Pond elevation with adjacent ditch to the left and inlet/outlet locations.

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Image 4: Unpaved access road from the installation

Coordinating with the proposer, the WYANG will lower the water level of the pond to the top of the sediment layer in advance of work commencing. After the pond is turned over for work, the proposer is responsible for the removal of any water that flows to the pond inlet. The WYANG will discontinue water use contributing to the storm water system that is not necessary. The remaining water flow can be pumped to the adjacent riprap lined ditch to the northwest of the pond, but no electric power is available at the work site. No shut off valve upstream of the pond exists, so drainage cannot be shut off entirely. Due to the large amount of impervious ground on the installation, small quantities of precipitation can fill the pond which would impact the project progress. In addition, rainfall can make the entrance accessing the pond wet and difficult for vehicles to navigate. The WYANG will coordinate with the proposer to schedule work during favorable weather conditions and during a time period that will have minimal impacts to installation operations. The contractor may close off the upstream storm sewer with approval from the Base Civil Engineer, his designee, or project Contracting Officer Representative (COR).

It is estimated that 450 cubic yards of material has accumulated across the pond varying from 12” to 24” in depth.

Sediment sizing varies from small gravel at the west inlet to fine silt around the east outlet. In the summer, pond weed growth occurs across the pond from this sediment layer. The selected contractor must remove all sediment, debris, and existing pond liner from the site and dispose of in accordance with state and federal regulations.

The storm water drainage system pond is currently lined with a PPL-30 mil liner that is nearing the end of its expected lifespan. The replacement liner is required to be a reinforced polyethylene material with a minimum thickness of 40 mil, and minimum 10 year exposed UV rating. It is not necessary for the replacement liner to have a chemical resistance or wastewater containment rating. An underlayment material shall be used to prevent punctures if its installation is required by the liner manufacturer. For reference, the existing liner does not have underlayment and punctures have not been an issue. A sand bed was put in place beneath the current liner’s installation, to an unknown depth. All connections made between liner sections and around penetrations must be done to the manufacturer’s specifications.

The current liner is held in place by way of a trench anchor along the pond perimeter and a 6” sand bed. A trench anchor should be used for the new liner and installed in accordance with the manufacturer’s specifications. There is a 20’ concrete emergency spillway off the east edge of the pond that currently uses a trench anchor to hold the liner adjacent to the concrete. A sand bed will not be put in place with the new liner and instead filled ballast tubes shall be used to prevent the liner from shifting. The ballast tubes will be at least 36” in length with a filled diameter of not less than 6” and placed in an arrangement similar to that shown in Image 6. It will be up to the proposer to ensure adequate ballast tubes are put in place to prevent movement of the liner and tearing around penetrations.

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Image 5: Pond emergency spillway

Image 6: Ballast tube layout

There are three penetrations through the liner including one inlet on the west end and two outlets on the east end. All are reinforced concrete pipe. The inlet pipe is 84” outside diameter and extends 30” above the pond floor. The two outlet pipes are 72” outside diameter. The southern low level outlet extends 30” above the pond floor and the high level pipe is 72” above the pond floor. The pond liner will extend from the floor and attach to the concrete penetrations (one on inlet and two ont eh outlet) according to the liner manufacturer’s specifications terminating not more than 12” from the top of each concrete pipe. All manufacturer’s instructions for liner installation shall be followed and all liner connections will be done in accordance with manufacturer’s specifications. The proposer shall ensure all outlets remain undamaged during construction. Any damage caused by construction activities must be repaired by the proposer at no expense to the Government.

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Image 7: West pond inlet

Image 8: East pond outlets. High level shown outlet on the right with separator ring and low level on the left.

The high level outlet pipe has a section of corrugated pipe surrounding it with X’ dimeter 9’ and x” height 4’-6”.

This surround is placed unattached on four concrete blocks measuring 24” x 24” and 36” high. The corrugated pipe has become corroded and is to be replaced as part of the scope for this project. The replacement pipe must be a corrugated steel pipe of similar specifications as the existing pipe. The liner will need to be protected under the supporting concrete blocks to prevent shifting and tearing of the liner. The selected contractor shall provide shop drawings detailing this configuration, liner, stabilization, connection, and sealant. The WYANG must approve prior to performing work on the outfall.

After the site is released to the proposer, the work should be completed and ready to return to service within 30 days.

All individuals requesting access to the installation will be required to pass a background check conducted by the 153d Security Forces Squadron prior to entry. Their name, driver’s license number and state, and birthdate must be provided for a background check. Any large vehicles will also be searched each time they enter the installation.

WYANG will provide a staging area for vehicles and equipment in support of this project. There is no electric or water hook-ups at the staging area Water can be provided by the WYANG through a ¾” hose connection at Building 31 and use will be coordinated through the Civil Engineering Squadron. However a continuous hose will not reach the pond from Building 31.

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Image 9: Summer pond conditions

Image 10: Pond inlet winter conditions.

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Image 11: Pond outlet during winter conditions

Environmental Considerations:

1. Communicate and coordinate with the Civil Engineering Office any currently unknown and unforeseen environmental conditions discovered in the field during design or construction.

2. All Hazardous Material SDSs must be submitted to the project POC prior to being brought on site. Container size and estimated quantity of use must also be submitted at least two days in advance of being brought onto the installation.

Other:

1. Contractor shall directly supervise the work with a designated project Superintendent as according to FAR 52.236-6. The Superintendent shall be physically on-site during all work days. The Superintendent shall be approved by the KO. The Superintendent shall have at least 10 years working in construction and 5 years (minimum) acting as a superintendent. The contractor shall provide the proposed superintendent’s resume with the proposal (bid). G

2. Contractor shall thoroughly check all work to ensure it meets the objective of a complete and usable system.

3. All work completed under this contract shall be guaranteed by the contractor against failure of workmanship and/or materials for a period of one (1) year from date of final acceptance of the project.

4. Contractor shall adhere to all applicable local, state, and federal laws, codes, and regulations including the current edition of the following:

a. Wyoming Public Works Standards

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b. Wyoming Dept. of Environmental Quality regulations

c. In compliance with any other federal, state, and/or authority having jurisdiction codes and ordinances, DoD and National Guard Bureau regulations, and all industry standards.

5. The Contractor will solely bear all fines and or penalties imposed by any regulatory agency that result from the Contractor’s failure to comply with applicable laws, regulations, and standards.

6. Contractor shall keep the construction site clear of trash and maintain a well-organized site appearance.

7. Perform any other miscellaneous work related to the project not covered under separate line items.

8. Contractor must “Call before you dig” to determine location of any possible gas, water, electrical lines, or other potential hazards. The contractor shall also complete and submit an AF 103 (aka Dig Permit) to the BCE no later than 1 week prior to any work on the base.

9. Contractor must include pricing for any needed third party locating services in their bid.

The Contractor is responsible for locating all utilities on the project site.

10. Contractor is to minimize damage to the land, soil, roads, water, wildlife, and structures.

Any damage to the site in excess of normal construction operations must be repaired at the Contractor’s expense in a timely manner at no expense to the Government.

PROJECT DELIVERABLES AND SUBMITTALS

Approvals and Changes:

1. Submit all proposed change order documents to the Contracting Officer (KO) and Project Representative for approval prior to procurement of equipment and commencement of the change.

2. No deviation from approved plans, specifications and general notes will be permitted without approval. Requests are to be submitted to the KO.

Administrative:

1. Hold a pre-construction meeting at the project site, in person, at least 14 days before the project start date. The purpose of this meeting is to review all project work plans, project schedule, and any other submittals.

2. The Contractor shall be responsible for maintaining any necessary licenses, bonding and permits, to include any manifest requirements and for complying with any federal, Department of Transportation (DOT), state, and municipal laws, codes, and regulations applicable to the performance of work. Contractor shall provide proof of such applicable licenses and permits prior to performing any work.

3. Provide copies, when requested, of any documentation related to this project. This includes but is not limited to:

a. Prime Contractor and/or Sub Contractor contact information

b. License and/or permitting documents

c. Design drawings, either final or draft

d. Inspection or testing results

e. Other information related to this project

Submittals: All submittals shall be approved prior to work commencing. All items listed above with a “G” shall also be submitted prior to construction.

a. Project Timeline

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b. Schedule of Values

c. Safety Plan

d. Replacement Liner Technical Specifications; this must include shop drawings showing trenching, stabilization, all penetrations and or appurtenances. and installation procedures as recommended by the liner manufacturer.

e. Ballast Tube Material Technical Specifications; this must include clear shop drawings identifying locations, orientation, weight, and other related items required showing proper liner stabilization.

f. Erosion and sedimentation Control Plan

g. Outfall (corrugated steel pipe) structure and or interface. This shop drawing shall also demonstrate liner protection / concrete block interface and or support.

h. All disposal tickets / records for all material removed.

MATERIAL AND EQUIPMENT ACCOUNTABILITY

Storage

1. The Contractor is ultimately responsible for the storage and safe keeping of all materials related to the project. The WYANG may, at the discretion of the KO, authorize storage of project materials in government facilities. However even if materials are stored in government facilities, WYANG does not assume any responsibility of safe keeping or securing any materials used on the project. Any costs associated with storing project materials must be included in the bid. For this project the Contractor may store materials while actively working on site. The materials must be stored safely and in a tidy manner.

2. Notify the government Project Manager prior to delivery of any material or equipment to the site. The contractor shall ensure someone is available to receive delivered materials and able to store them safely in an area to be coordinated with the government project manager. Any materials delivered without prior coordination and without having someone to take receipt, shall not be accepted and will be turned away.

Equipment

1. The Contractor will supply all necessary equipment and tools to complete the project.

Any costs for procuring equipment and tools must be included in the bid.

2. The Contractor will not utilize any government equipment or tools.

Material Disposal G

1. The Contractor is responsible for the collection and disposal of all debris, demolition, rubble, residue and waste material generated in the performance of work under this contract. All such materials shall be disposed of at an off base landfill designed to receive the type of material and waste generated or recycling facility by the Contractor. The Contractor is not permitted to deposit any such materials in base trash collection containers or at any on base location without prior written approval of the Contracting Officer. At the Base Civil Engineer's discretion some project items may be retained for use by the government. The Contractor is responsible for all permits, paperwork for the Environmental Protection Agency (State or Federal) and any other agency requiring submission for any items disposed of or generated in the performance of work under this contract.

2. Materials classified as hazardous by US environmental rules, regulations, or laws, shall be handled and processed for disposal in accordance with those rules, regulations, or laws. The Contractor is responsible for all such materials that are residue from Contractor

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DESIGN STANDARDS, CODES, AND CRITERIA

1. Safety and Health Standards. The Contractor shall initiate and maintain programs to comply with the provisions of the Occupational Safety and Health Standards Act (OSHA). Contractor shall provide proof of such applicable licenses and permits upon request of the WYANG.

ACCESS AND SECURITY POLICY AND PROCEDURES

Work Hours

Work hours shall be Monday thru Friday 0700-1630 hours, with the exception of Federal holidays and Phoenix Fridays. Phoenix Fridays are every other Friday. A list of closed days can be provided to the successful awardee upon request. Contractor must have prior approval in writing to work outside these guidelines.

Base Access

1. Security Forces shall monitor the incoming and outgoing of work personnel during the duration of the project. All deliveries shall be coordinated with the project manager to arrange for their entrance onto Base property.

2. Access and General Protection/Security Policy and Procedures. This standard language is for contractor employees with an area of performance within Government controlled installation, facility, or area. The contractor shall comply with all applicable installation/facility access and local security policies and procedures, which may be obtained from the project manager. The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the local installation’s Security Forces, Director of Emergency Services or local Security Office. The contractor shall ensure compliance with all personal identity verification requirements as directed by DoD, HAF and/or local policy. Should the Force Protection Condition (FPCON) change, the Government may require changes in contractor security matters or processes.

3. All Contractor personnel shall receive AT Level 1 training in the form of an informational pamphlet. All personnel shall be offered additional AT training if desired by the individual. All personnel shall sign a statement confirming they received the information and were offered additional AT training. General Contractor or representative will keep a log of personnel signing the confirmation of training and forward it to the 153 AW/ATO at the end of the contract or monthly whichever is sooner.

4. Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification Index (NCIC-III) and Terrorist Screening Database (TSDB) (AFI 31-101 and AFI 10-245), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative).

5. All commercial, contractor, and sub-contractors vehicles are subject to random inspections each time they enter the base.

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6. If badges will be issued, they will be issued by the 153d Security Forces Squadron (SFS) to the contractor through the 153 Civil Engineering Squadron. Badges shall be issued, tracked, and collected in accordance with instructions from Security Forces.

7. All personnel working on this project shall request and be eligible to be placed on an Entry Access List (EAL). It is the contractor’s responsibility to ensure all planned personnel have appropriate permission.

8. The ANG POC will coordinate escorts if access to secured areas is required. The Contractor shall provide written notice to the KO and ANG POC at least three (3) working days prior to working in secured areas. The notice shall include the working hours, location(s) of work, and number of workers. Additional information may be required by the Installation Commander before access is granted.

9. All Contractor personnel shall have a minimum of one (1) Form of Photo Identification with them at all times.