Amd3_Attch2_historical_data_2_44pp_0004.pdf

This document package contains specifications and supporting materials for a federal construction contract to install a complete wastewater disposal system at the Ouray National Wildlife Refuge Field Office Building in Uintah County, Utah.

The project requires installation of two precast reinforced concrete septic tanks (minimum 1,000 gallons each or one 1,750-gallon tank as an option), a gravity-fed PVC sewer pipe system (4-inch diameter), and a soil absorption field with chamber units (INFILTRATOR™ brand, high-density polyethylene, approximately 100 inches long, 22 inches wide, 12 inches high, 33 pounds per unit, minimum 63 gallons storage per unit). The system must meet Utah Administrative Code R317-501 through R317-513 requirements and include leak testing, infiltration testing, and final inspection by the TriCounty Health Department before backfilling. The contractor must perform excavation, trenching, backfilling, and site restoration; submit manufacturer data and installation instructions; and coordinate with health authorities for final system inspection. The work sheet specifies a 45-day performance period with zero liquidated damages, an engineer's estimate of $17,000, and available funding of $17,000. Design calculations indicate the facility will serve approximately 10 employees and 10 visitors daily, requiring a 1,000-gallon septic tank and minimum 165 square feet of drainfield, with additional capacity if staff increases. Testing data shows soil percolation rates of 10-21 minutes per inch, and the system received final approval from the TriCounty Health Department in August 1998 (Permit #98-UIWW-0021) and December 1997 (Permit #65418).