OAK FLAT SEPTIC TANK

Oak Flat Station Septic System Replacement Scope: Locate existing septic tank, inlet and outlet piping. Remove, sanitize, and dispose existing septic tank and install new 2000 gallon concrete septic tank. Septic tank shall be installed on compacted granular material in accordance with the manufacturer's directions. Install approximately 300 feet of 4 inch ABS drain line with 30 inches minimum cover, 2 ball valves, and new leach field with 18 inches minimum cover. Leachfield trench shall be 3 feet wide and 3 feet below perforated pipe. Trench to be filled with graded rock from 2 inches above the pipe to the bottom of the trench. Top of rock shall be covered to prevent backfill from penetrating the rock fill. Total leachfield length to be 400 feet in four legs complete with a distribution box. Locate the existing leachfield and connect proposed discharge piping to the old leach field with a tee and two ball valves so that the old leach field may continue to be used when necessary as a backup. Provide valve boxes to operate the valves and pour a concrete slab 2 feet by 2 feet to contain and protect the valve boxes. Septic tank shall be by Jensen Precast Model JP2000 or equal with manholes, risers, and manhole frames and covers for the two manholes over the inlet and outlet piping for access and pumping. NAICS - 238910 MAGNITUDE OF CONSTRUCTION - $25,000 - $100.000 SOLICITATION WILL BE POSTED 19 JUNE 2009 OR SOONER.