CA - FWS MODOC NWR- MESURING WEIR REPLCMT

STATEMENT OF WORK PARKER CREEK MEASURING WEIR REPLACEMENT U.S. Fish and Wildlife Service Modoc National Wildlife Refuge – Alturas, California July 21, 2026 Page 1 of 7 1.0. GENERAL INFORMATION 1.1 Contractor shall provide materials and services to remove and replace an existing two-bay, stop-board, weir structure located in the Parker Creek Diversion Canal. This project will replace the in-canal concrete water control structure required for managing water to the Refuge and neighboring lands. The Project is located at the Modoc NWR in Alturas, Modoc County, California. 1.2 Contractor’s Qualifications: Contractor shall be experienced and have demonstrated positive past performance with the design and construction of various concrete, “pour-in-place” water control structures. 1.3 Regulatory Requirements: It is the Contractor’s responsibility to complete the Project in compliance with applicable requirements of federal and state laws, codes, rules, regulations, ordinances, and standards. 2.0. WORK LOCATION AND PERIOD OF PERFORMANCE 2.1 Work Location: Modoc National Wildlife Refuge (MNWR), 5364 County Road 115, Alturas, California 96101. • The Parker Creek Diversion Canal is the responsibility of USFWS, however, access to the project site is through private property, USFWS escort is required. 2.2 Period of Performance: The Period of Performance shall be 62 calendar days and will commence upon issuance of the Notice to Proceed (NTP). The Contractor shall receive the NTP within 10 calendar days after contract award. The anticipated Period of Performance is August 31, 2026 - October 30, 2026. The period of performance for this contract is tentative and subject to change. Actual project work window may be dependent on weather conditions and water flow in the canal. Contractor shall coordinate with the Refuge Manager for a proposed project work window. The final accepted work window will be mutually agreed upon between the Contractor and the Refuge Manger prior to work beginning. -- 1 of 10 -- STATEMENT OF WORK PARKER CREEK MEASURING WEIR REPLACEMENT U.S. Fish and Wildlife Service Modoc National Wildlife Refuge – Alturas, California July 21, 2026 Page 2 of 7 3.0. BACKGROUND The Modoc National Wildlife Refuge (MNWR) is owned and operated by the U.S. Fish and Wildlife Service (USFWS). The Refuge is in the northeast corner of California, approximately 3.5 miles southeast of the town of Alturas. The next nearest town, Likely California, is approximately 13 miles south of the Refuge. The Refuge has identified a requirement to replace one (1) concrete, two-bay, stop-board water control structure. The existing structure has started to degrade over time and has reached the end of its life span. This water control structure is essential to the Refuge and neighboring landowners meeting their water right obligations. The project includes but is not limited to the following elements: • Mobilization and de-mobilization. • Staging of any equipment and materials. • Removal and proper disposal of existing structure. • Pour-in-place new structure including all related components. Please note, the above bullet list is not intended to be comprehensive, it is simply provided as a baseline. 4.0. SCOPE OF WORK The Contractor shall provide all labor, supervision, materials, equipment, tools, transportation, permits, testing, and incidentals necessary to construct a replacement water control structure at Parker Creek. The project shall be completed using a design-build strategy. A schematic of the completed structure and elevations is required, however, does not need to be fully engineered plans. The Contractor shall be responsible for verifying all field conditions, measurements, elevations, and dimensions necessary to prepare the final design and complete construction. The Contractor shall provide an official strategy of all drawings, calculations, specifications, schedule, and other supporting information necessary to demonstrate that the proposed structure will meet the required function and performance of the existing structure. 5.1 The Contractor shall remove and dispose of the existing water control structure and construct a new reinforced concrete, two-bay stop-log water control structure with wing walls. The newly replaced structure shall maintain the same operational purpose, hydraulic capacity, approximate dimensions, and general location as the existing structure unless otherwise approved by the Fish & Wildlife Service (FWS). The new structure shall include stop-log rails capable of supporting overlapping 2-inch-wide lumber, a staff gauge or metering gauge to monitor water levels, and a crossing platform or access feature over the structure to allow safe passage from one side of the canal to the other. -- 2 of 10 -- STATEMENT OF WORK PARKER CREEK MEASURING WEIR REPLACEMENT U.S. Fish and Wildlife Service Modoc National Wildlife Refuge – Alturas, California July 21, 2026 Page 3 of 7 5.2 The Contractor shall take all necessary elevation measurements, field surveys, and site observations required to establish proper placement and function of the new structure. The Contractor shall ensure that all adjacent facilities, including nearby water control structures, canals, utilities, and other existing improvements, are protected from damage during demolition and construction activities. 5.3 The Contractor shall provide and submit basic design sketches, and any required calculations for Modoc National Wildlife Refuge (MNWR) – COR review and acceptance prior to beginning construction. Construction shall not begin until the submittals has been reviewed and accepted. Modoc National Wildlife Refuge (MNWR) and COR review does not relieve the Contractor of responsibility for design accuracy, code compliance, structural adequacy, or performance of the project completed by state, federal, and government laws. 5.4 The Contractor shall perform all Quality Control (QC) inspections and testing necessary to ensure the completed…