180405__SOW_Repair_AFFF_Retention_Pond_B508_B502_v5.pdf

STATEMENT OF WORK

CONSTRUCTION

REPAIR AFFF RETENTION POND, B508/B502

MXDP 16-1013

Laughlin AFB, TX 5 April 2018

1. SCOPE OF WORK:

The contractor shall provide all labor, equipment and materials to replace the synthetic geomembrane liner in the Aqueous Film Forming Foam (AFFF) retention pond for both B502 and B508. Work includes removal of all plant growth on top, center, and around the liner and anchor concrete attachment surface along with replacement of the liner. The contractor shall provide the government with a complete and useable waterproof containment area to retain AFFF or hazardous spillage that is to be kept separate from storm drainage, as well as, a warranty for the replacement work.

2. CURRENT SITUATION:

The retention pond liner is severely damaged in multiple areas. This damage allows for plant growth and potential liquid seepage. This seepage will potentially be released into the ground, entering the storm drainage system.

3. PERFORMANCE PERIOD:

This project will require 2 written Notices to Proceed (NTP). NTP #1 shall have a period of performance of 60 calendar days for the Pre-Construction submittal, order and receipt for materials. NTP #2 shall have a period of performance of 60 calendar days for replacement of the existing geomembrane liner.

4. DESCRIPTION OF WORK:

The purpose of this project is to replace the waterproof containment area liner which captures all discharged or spilled AFFF concentrate or concentrate-water solutions/foam from buildings 502 and 508. The work shall include preparation of shop drawings, demolition as specified under demolition requirements (paragraph 4.1) and installation of new items as specified under renovation/repair requirements (paragraph 4.2). The contractor is required to complete and submit shop drawings of liner system (drainage and containment), where applicable, showing all connections to existing system, utilizing the existing as-built provided by the government. The contractor is responsible for verifying all existing conditions and determining the accuracy of the provided as-built. It is the responsibility of the contractor to notify the government for any discrepancies prior to preparation of shop drawings.

All work on this project shall be accomplished in accordance with attachment 2: Division 1 specifications. In any instance where work is required that is not specifically covered by the existing Division 1 specifications, the work shall be accomplished in accordance with the most stringent applicable industry standard for the specific work required. All work shall be in accordance with the Uniform Building Code, Unified Facilities Criteria and all applicable Air Force, state, federal, and local codes. When codes, standards or guidance conflicts; the contractor shall adhere to the most stringent method of construction and installation.

4.1 DEMO REQUIREMENTS:

At no time shall the contractor cut services or utilities to the buildings being serviced by the containment area that would affect mission capability or quality of life without first obtaining approval from the Contracting Officer (CO). The contractor shall ensure that all other possibilities have been examined prior to requesting approval to cut services to any of the nearby buildings. Any request requiring that services are to be disrupted to any, or portion of a, building must include the date and time when services will be restored.

4.1.1 Remove all plant life from within the existing containment area.

4.1.1.1 Soil sterilization must be done to eradicate root system of plant life within the containment area.

4.1.2 Remove concrete anchor trench surrounding the perimeter of the existing containment area.

4.1.2.1 The concrete immediately surrounding the AFFF discharge pipe and

AFFF Pond Outlet Structure will not be removed or damaged.

4.1.3 Remove existing liner within containment area.

4.1.4 Remove existing perimeter fence surrounding containment area.

4.2 RENOVATION/REPAIR REQUIREMENTS:

4.2.1 Replace existing liner with new impermeable geomembrane liner.

4.2.1.1 Membrane must be chosen to mitigate chances of plant growth through liner.

4.2.1.2 Liner must be a system of bentonite attached to a geomembrane liner for positive sealing of the containment area. Product shall be a product similar to GSE GUNDSEAL Smooth HDPE Geomembrane Supported GCL.

4.2.2 Replace concrete anchor trench with minimum 3000PSI strength concrete.

4.2.3 The Contractor shall be required to repair any damage done to the containment area and/or its contents in the performance of this contract, at no cost to the government. Any repairs required due to the contractor’s negligence must be made in such a way that would leave the areas affected in the same or better condition than they were prior to being damaged.

4.2.4 Compact the dirt, disturbed by trucks or removal of plant life, to at least 90% compaction rate.

4.2.5 Grade the dirt to proper slope 1:6 specified in attached as-built.

4.2.6 Replace demolished fence with new fence.

5. REQUIREMENT:

Provide a complete and usable AFFF retention pond which meets all requirements and goals as described in this Statement of Work.

6. WORK HOURS:

Work shall be accomplished during normal duty hours from 0730 thru 1630, Monday through Friday. The contractor may request work outside of normal duty hours, but the request must be received in writing at least 72 hours in advance to be considered. Not all requests may be approved.

7. CONSTRUCTION AREA:

Demolition and construction will take place at the existing AFFF retention pond west of building 502. The contractor shall utilize necessary safety precautions, e.g. safety cones, construction tape, or closed areas throughout construction.

7.1 For safety and security purposes, at the end of every workday, the contractor shall bring all materials and equipment to the laydown yard or inside the containment area provided that it won’t interfere with the normal day to day operation of the rest of the buildings it services. Prior coordination with the COR is required.

7.2 The contractor shall not leave the worksite or any portion of the job in an unsafe state during the demolition and construction of this project. Prior to leaving the site the contractor shall ensure that all work has been finished to a point that it can be safely left until the contractors return.

7.3 At the end of each day, the contractor shall ensure that the site is secured to an equivalent or greater extent and shall ensure there is no potential access into or through the worksite.

8. ON-SITE FIELD OVERSIGHT:

The Contractor shall provide the manpower, equipment, material, services, and transportation necessary to ensure oversight throughout the accomplishment of this task order. A superintendent approved by the CO must be on site whenever work is being performed.

9. DELIVERY/WARRANTY:

The Contractor shall submit to the CO a draft copy of the DD Form 1354, "Transfer and

Acceptance of Military Real Property," 14 days prior to pre-final acceptance of the work.

A pre-final inspection will not be scheduled until the draft DD Form 1354 has been received.

The final DD Form 1354 shall be submitted simultaneous with the final inspection, along with the following documents.

9.1 Manufacturer and material warranties

9.2 Warranty for the work done by the contractor (1 year)

9.3 Any applicable special warranties

10. CLEANING:

Construction area shall be kept clean and free of debris and construction materials at the end of every workday. All demolished materials shall be hauled off base and disposed of at contractor’s expense. Prior to Government acceptance, all areas shall be free of construction debris. Provide, in writing, the location for disposal of any debris. If using other than approved disposal sites, approval must be obtained from the city and/or county. Approval documents shall be submitted to the CO.

11. SUBMITTALS:

11.1 The contractor shall submit all materials that are listed on the Schedule of Material Submittals. All material submittals shall be submitted within the specified time after issuance of NTP #1 and the government will have 21 days to review each submittal before construction begins.

11.2 The contractor shall submit all shop drawings to the government for approval per the requirements stated on the schedule of material submittal at least 3 weeks prior to start of construction.

11.3 All as-built drawings shall be submitted in hard copies (1 – D size) and electronic formats (AutoCAD version 2014 and PDF- 1 copy each).

12. OTHER REQUIREMENTS:

12.1 QUALIFIED PERSONNEL: The contractor shall ensure that only qualified, competent personnel carry out the tasks outlined in this SOW. Competent is defined as trained and/or certified in their respective field.

13. ATTACHMENTS:

Attachment 1 As-built drawing (1 sheet) Sheet No 1 AFFF Retention Pond

Attachment 2 Division 1 Specifications

Attachment 3 Schedule of Submittals

Attachment 4 AF 3952 for HAZMAT to be brought on base

Attachment 5 Hazardous Material Usage Report

Attachment 6 DD 1354 for Transfer of Acceptance

Attachment 7 Photos of Current Condition