Directorate of Contracting, Contract Support Div Atzr QD, PO Box 33189, Bldg 1950, Fort Sill Ok 73502-0189

S -- WASTE WATER TREATMENT AND WATER DISTRIBUTION SYSTEM, FORT SILL, OK DUE 021398 POC Sharel McAdoo, Contracting Officer, or Laurie Wheeler, Contract Specialist, (580)442-3225 or 442-4315 The United States Army Field Artillery Center and Fort Sill, Oklahoma, is seeking an Expression of Interest (EOI) from contractors who may wish to compete for award of the privatization of the Waste Water Treatment Plant (WWTP) and collection system as well as the potable water distribution system at Fort Sill. Privatizing is defined as the transfer of ownership and responsibility for operation, maintenance, repair, upgrade, and plant replacement to the non- federal sector. The existing capacity of the present WWTP is 4.3 million gallons per day with a 12 million gallons per day maximum, two hour peak treatment capability. Ammonia removal capability is provided by the addition of extended nitrification aeration system utilizing centrifugal blowers, diffused air, and secondary clarifiers process. Enhanced sludge handling capabilities are available thru the addition of a total mix primary digester, three hydraulic belt presses and two gravity belt thickeners with a polymer mixing/feed systems. Processes include physical, biological, and chemical treatment and removal. In addition the plant equipment and structures include: one primary clariflocculator, two barscreens, one grit classifier/separator with basin, one grease removal parameter, one flow storage equalization basin, four nitrification aeration basins, four secondary clarifiers, one secondary sludge pump station with six return/waste activated sludge pumps, two self contained hydrated lime feeding silos with flow paced feeders for alkalinity control, one dry alum feeding silo with flow paced feeders for solids control thru coagulation and flocculation, one powdered soda ash feeding silo with flow paced feeders for pH control, one chemical feeding structure for increased storage/feed capability, one adjunct final clariflocculator, one additional final filter including pneumatic controls and valves for a total five filter operation. The WWTP is also responsible for the water quality compliance at four swimming pools; one recreational area lift station,total retention sewer lagoon and package water plant; and a total retention lagoon at the training area, Camp Eagle. The Fort Sill WWTP operates under the guidelines of an NPDES permit. The permit is administered by the Oklahoma Department of Environmental Quality. Fort Sill will continue to maintain the NPDES Permit and be totally liable for compliance with all the permit conditions and requirements. All prospective contractors will be required to operate and maintain the plant in accordance with the permit. This might include the requirement that a contractor operate an Industrial Pretreatment Monitoring Program. Fort Sill's potable water supply is provided by the City of Lawton from Lake Lawtonka Water Shed with pumping capabilities (transferring) from Lakes Ellsworth and Waurika Water Sheds. Fort Sill presently owns and maintains five water towers consisting of : one wet stem low level zone with 500,000 gallons capacity, one wet stem low level zone with 750,000 gallon capacity; one wet stem low level zone with 500,000 gallon capacity, one dry stem low level zone with 1,000,000 gallon capacity, and one wet stem high level zone with 500,000 gallon capacity. Fort Sill has ten lift stations. Letra Beach recreational area's potable water is currently being hauled. Once Letra is allowed to refill, the package potable water treatment plant will provide up to 35 gallons per minute by demand. Camp Eagle has a potable water pumping well and a 5000 gallon capacity pressure tank. EOIs should be submitted to Directorate of Contracting, ATTN: Contract Support Team (Sharel McAdoo or Laurie Wheeler), PO Box 33189, Fort Sill, OK 73503-0189. Submissions are requested on or before February 13, 1998. (0022)

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