B08 Attachment 1_SOW CERC Pond 20 Leak Repair.doc

United States Department of the Interior

U. S. GEOLOGICAL SURVEY

Columbia Environmental Research Center (CERC) 4200 New Haven Road

Columbia, Missouri 65201

Statement of Work CERC Pond 20 Leak Repair

1. General Information

a. Background: The Columbia Environmental Research Center (CERC) conducts research needed to address national and international environmental contaminant issues and effects of habitat alterations on aquatic and terrestrial ecosystems. CERC has 33 research ponds located on its 33-acre campus. Ponds are used for aquatic research. Ponds are separated by earthen pond banks approximately 12’ (3.6 meter) wide. Pond 20 is one of many small ponds that were renovated in 2010 which included the installation of new kettle drains and drain lines. Pond #20 is fed by a 3” water supply pipe on the south side and a 2” water supply pipe on the north side. It is approximately 95’ (28.9 meter) x 65’ (19.8 meter) and has a sloping floor from north to south with a maximum depth if approximately 8’ (2.4 meter). The drain kettle is located on the south side of the pond. All of the pond drains feed into a series of drain lines that ultimately feed into a research waste-water lagoon. Drain lines are grouted into the bottom of the kettles. Pond drains are controlled by slide gates built into the kettles.

b. Applicable Documents:

i. Attachment 2_Pond Overview Photo

ii. Attachment 3_Pond 20 Diagram

c. Scope

i. Columbia Environmental Research Center (CERC) has a requirement for pond 20 excavation and repair to an underground water leak to be performed at the facility located at 4200 New Haven road in Columbia, Missouri. The contractor shall provide all labor, material, tools, equipment, and supervision necessary to address and stop any leakage from the pond. Each pond has its own isolation valves. The contractor shall execute the work in a manner that does not interfere with the operations at adjacent ponds.

2. Work Requirements

a. Technical Requirements: Contractor shall provide all labor, material, tools, equipment, and supervision necessary for the following work and conforming to the following minimum requirements:

i. Excavation:

1. Contractor shall excavate to appropriate depth to find and stop the leak, to be able to recompact and seal the pond bank. The pond shall not leak after the excavation.

a. Hand excavate areas under pipe where cuts/breaks are identified for repair.

b. Excavation operations shall be carefully executed so that pipe damage does not occur prior to removal.

c. Any pipe damage shall be removed/replaced with like kind material.

2. When excavating is completed, the pond should not leak water and hold water at maximum fill level. All known pipes and wires identified on the enclosed drawings shall not be damaged by the contractor.

ii. Pond Dredging and Bank Renovations:

1. Any damage to existing dikes and roads used for hauling shall be repaired by the contractor.

2. The contractor shall seed all dikes and other areas disturbed by construction with Kentucky 31 grass seed. Seed shall be tilled into the ground ¼-1 inch in depth. A standard layer of straw shall be placed on top of all seeded area. Initial watering shall take place for 2 hours to soak the seed.

3. The contractor shall maintain all equipment in good working order and ensure there are no significant leaks of oil, gas, lubricants, or other contaminates into pond sediment, backfill or topsoil.

iii. Pond Bank Stabilization:

1. Pond bank stabilization shall be achieved by the installation of limestone rip-rap. Water level design in ponds is 18” (45 centimeter) below dike grade. 4” (10 centimeter) rock shall be layered and compacted into pond banks 30” (76 centimeter) below the dike grade up to grade.

2. Rip-rap base shall be covered completely with a 2-inch layer of 1” (2.5 centimeter) up to 1½” (3.8 centimeter) clean rock gravel 30 inches down from dike grade.

iv. Any issues affecting project completion or delivery dates will be communicated to CERC facility staff as soon as practical but no later than 24 hours after the contractor becomes aware of the issue.

v. The contractor shall follow OSHA safety procedures.

vi. The contractor shall provide employees with standard personal protective equipment in the performance of the work under this order.

vii. The contractor is responsible for complying with all Federal, State, and local laws, codes, and regulations in connection with the execution of the work required as well as being responsible for any licenses and permits.

viii. Contractor personnel shall wear masks over nose and mouth while on site.

b. Deliverables

i. The contractor shall provide all labor, material, tools, equipment, and supervision necessary to address and stop any leakage from the pond.

ii. The Contractor shall ensure all roads, dikes, pond banks, pond and paths are restored to original configuration (including any debris clean up and removal) and elevation prior to work completion.

3. Supporting Information

a. Place of Performance: CERC, 4200 New Haven Road, Columbia, Missouri 65201

b. Period of Performance: The contractor shall (a) commence work under this contract within 15 calendar days of contract award (b) prosecute the work diligently, and (c) completion shall be no later than 15 business days after commencement of work. The time for completion shall include final cleanup of premises.

c. Government Furnished Property (GFP): None

d. Special Considerations:

i. The contractor shall schedule all work with the Technical Liaison during normal facility business hours of 7:00 AM to 4:30 PM, Monday thru Friday. The nature of work conducted in this pond system requires careful scheduling of work to minimize potential harm to various endangered species and other aquatic life.

ii. Work shall not be performed on federal holidays or on any day the President of the United States, the Congress of the United States or the Center Director directs closure of the facility.

iii. Contractor may set portable restroom facilities, construction trailer(s) and construction equipment at the site. The site is security fenced. The Government shall accept no liability for contractor-owned equipment staged at the site. Contractor personnel will have no access to Government buildings at the site. There are no public telephones or other conveniences at the site.

iv. Any changes affecting the scope of work shall be originated from and approved by the Contracting Officer.

v. Contractor is responsible for visiting the worksite to verify measurements and to ascertain the nature and location of the work to be performed, and the general and local conditions which can affect the work or the cost thereof. Failure to do so will not relieve the contractor of his responsibility for estimating properly the difficulty or cost of successfully performing the work.

vi. Contractor shall be responsible for the repair or replacement of damaged buried utility systems or components, or above ground structures resulting from the demolition or installation of items under this contract. Materials and methods shall match existing.

vii. All materials and workmanship shall be subject to the inspection and approval of the Contracting Officer or the Contracting Officer’s Technical Representative. All work unsatisfactorily performed shall be corrected with 48 hours and made acceptable to the Government at no additional cost.

viii. The Contracting Officer’s Technical Representative reserves the right to stop all work under this order if established OSHA safety procedures are not followed or any equipment is deemed unsafe to use.