A04_SOW.docx

United States Department of the Interior U.S. Fish and Wildlife Service Agassiz National Wildlife Refuge 22996 290th Street NE Middle River, MN 56737 218/461-8970

STATEMENT OF WORK

John’s Field Culvert Replacement

Overview:

Seeking quotes from contractors to replace failing culvert on Agassiz NWR. This project includes replacing 1 road approach culvert on Agassiz National Wildlife Refuge. Specifications on work will be outlined below. Read carefully as specifications per site and materials provided vary.

Location:

Agassiz National Wildlife Refuge Headquarters, 22996 290th Street NE, Middle River, Minnesota 56737 GPS coordinates will be provided for each site below.

Contact Information:

Cody Okeson Deputy Refuge Manager Agassiz National Wildlife Refuge 320-333-4933 cody_okeson@fws.gov James Graham Refuge Manager Agassiz National Wildlife Refuge 218-689-7987 James_graham@fws.gov

Contractor Responsibilities:

· Prior to starting work on site, the contractor must inform Contact listed above at least 48 hours in advance.

· It is HIGHLY recommended that contactors visit the site prior to submitting a bid or quote. Bids must include any mobilization or other related fees.

· Work must be completed by: August 31, 2025

· Equipment left on-site must be secured and is the sole responsibility of the contractor.

· Equipment must be cleaned pre and post entry of the site for noxious and invasive species.

· Work will be conducted in a manner that will minimize rutting, disturbance, or compaction of soil or sod and the spread of noxious and invasive species. Damage to access roads, both on and off refuge are contractor responsibility.

· Payment will be processed following receipt of proper invoices and inspection of work for contract compliance.

Description of Work to be Completed:

John’s Field 96” x 66’ Culvert -- Location: 48.294994°, -95.884008°

New corrugated metal culvert is to be installed in a road approach. Agassiz refuge has removed the failing culvert to allow water flow. All culverts, aggregate, other materials and incidentals will be the responsibility of the contractor.

Required Culvert Specs:

· Length: 66 feet overall

· Top Length: 48 feet

· Diameter: 96 inches

· Bevel Cut Both Ends: 1 ½ : 1 Bottom Step Bevel, 24” bottom step

· Material: 12 gauge Helical Poly Coated 5X1 Corrugated Steel Pipe

General Process:

· Construct coofferdams if needed using onsite material from work site. To be removed when project is complete. Contractor is responsible for dewatering and maintaining a dry work site. Refuge project manager will designate location of borrow material.

· Excavated aggregate materials should be separated during excavation to be re-used if possible during the backfill. Contractor responsibility to call in all required utility locates.

· Prepare a minimum of 3 inch thickness compacted sand bedding under the culvert. Back fill for the culverts shall be a Clay (CL) or Silty Clay (SC) material. Utilize suitable material that was excavated from site, and/or provide new material as needed. The backfill shall be no less than 2 feet above the top of the culverts and the finished grade should match the existing road and shoulder grade. Black dirt fill material will be used to bring the ditch grade up to meet the existing slope. Black dirt should be seed bed ready, levelled and free of large dirt clumps.

· New culvert should have a slope of approximately 1-2 inches from inlet to outlet. Culvert invert elevation will be established by the refuge project manager.

· Lifts shall not exceed 12 inches and compaction around the culverts must be completed by hand or mechanical packer. Use of excavator or back-hoe bucket for compaction will not be approved.

· The Contractor is responsible for re-establishing turf in all disturbed areas using MNDOT Seed Mix 35-241 at a rate of 45 lbs. per acre. Biodegradable erosion control blankets are required to be placed and secured over seeded areas.

Agassiz National Wildlife Refuge Infrastructure Repair Bid

Contractor Name: Business Phone No: Cell No:

Address: City/State/Zip Code: Contractor Signature:

Total Bid Amount: