Seattle District, Corps of Engineers, PO Box 3755, Seattle, WA 98124-2 255; Handcarry to 4735 East Marginal Way South, Seattle, WA 98134-2385

Z -- CONTAMINATED GROUNDWATER REMEDIATION, EXPLOSIVES WASHOUT LAGOONS, UMDA HERMISTON, OR SOL DACW67-95-B-0076 DUE 081595 POC Contact, Obeid Shaikh, (206) 764-4481 Perform cleanup of explosives-contaminated groundwater, using granular, activated carbon adsorption. The contaminants of concern range in concentration from 1560 ug/l for trinitrotoluene (TNT), 1000 ug/l for 2,4-dinitrotoluene, 120 ug/l for trinitrobenzene, and small amounts of other explosives. The groundwater shall be extracted from depths of 115 and 125 feet, treated and returned to the aquifer through infiltration fields. The water shall be treated in two, high-flow, dual module adsorption units at 1300 gallons per minute by installing pumps in an existing 12-inch well and install new 12-inch and 14-inch wells. Construct a 2,500 sf pre-engineered treatment plant building and associated mechanical and electrical equipment. The water distribution system shall include approximately 600 feet of 4-inch buried PVC piping, 1,100 feet of 6-inch buried PVC piping, 3,400 feet of 8-inch buried PVC piping, and 7,000 feet of 10-inch buried PVC piping. The spent carbon shall be disposed offsite at a regeneration or incineration facility. Provide two years of operation and maintenance of the treatment plant after the facility is constructed and tested. Plans and specs available on or about 15 July 1995 at no charge per set. No individual sheets are available. Documents will be issued on a first come, first served basis until supply is exhausted. No phone requests accepted. Refer to IFB Number DACW67-95-B-0076 when ordering. Requests must be in writing and must be received before bid documents will be mailed. Requests may be FAXed to (206)764-6817, confirmation copy need not be mailed. Plans and specs may be picked up from the Plans Room Monday thru Friday between the hours of 7:30 A.M. and 3:30 P.M. Submit requests by 30 June 1995. Estimated dollar value is in the range of $1,000,000 to $5,000,000 and completion period is 1150 days. Standard Industrial Classification Code 1629. Project is open to both large and small business. NOTICE TO LARGE BUSINESS: If you are a large business and your bid or proposal will exceed $1,000,000 you will be required to submit a subcontracting plan. (0151)

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