Bureau of Reclamation, Contracts Group, 1150 N. Curtis Road, Suite 100, Boise, Idaho 83706-1234

46 -- WATER TREATMENT PROCESSES FOR GRAND COULEE POWER PLANT, GRAND COULEE, WASHINGTON DUE 032398 POC Terry K. Ford, Jr., Contracting Officer, 208-378-5100 The Bureau of Reclamation (Reclamation) is requesting information on various water treatment processes. Reclamation's Grand Coulee Power Office (GCPO) has a requirement to determine a method to provide safe drinking water in compliance with the Safe Water Drinking Act and Surface Water Treatment Rule. To comply with the Washington State Department of Health (DOH) requirements, GCPO must submit a "project report" to the DOH for written approval prior to installation of the new water treatment system as required under the State of Washington's Administrative Code (WAC) 246-290-110. Our intent is to gather sufficient data to evaluate performance and cost of a variety of treatment processes which will be included in the project report. When we've identified a preferred treatment process, with concurrence from the State of Washington, Reclamation intends to issue a "request for proposals" to furnish and install a new treatment system. To meet our schedule, we ask that interested offerors supply data as outlined below to us by March 23, 1998. The project report must include certain elements of a small water system plan, and a pre-design report discussing the feasibility and efficacy of operating at least the following treatment processes: (1) slow sand filtration; (2) gravity filtration (conventional or direct filtration mode); and (3) various alternate filtration technologies (such as cartridge or "bag" filtration) acceptable to DOH for pilot testing or in-service demonstrations. Othe specific items that we need to address in the report include: verification that the system will meet all the requirements of the State of Washington for the treatment of surface water including turbidity reduction, and removal of both Giardia and Cryptosporidium; verification that the equipment can fit into the existing plant; specific requirements for process chemical types and usage rates (including estimated schedules and chemical usage required for filter cleaning, etc.); required quantity and quality of backwash water and/or estimated sludge generated; process controls and operator requirements; budget level equipment costs for a complete pre-engineered, pre-piped, and skid-mounted system with controls; estimated cost for a hypochlorination or mixed oxidant system that will properly post-chlorinate the treated water (this system will replace the existing gas chlorination system). To help us prepare this report we are requesting information regarding the capacity, capability, performance parameters, and requirements of various systems in light of the following pertinent information specific to GCPO's situation: The maximum daily design capacity needed at GCPO is 500,000 gallons per day; water is supplied from the Columbia River through a header system inside the Third Powerplant that typically operates at approximately 125 psig; the header supplies raw water to six existing pressure sand filters; the existing system is located at elevation 968 in the plant; the filtered water is pumped to existing water storage tanks approximately1.5 miles away, at elevation 1562; the new treatment system is to replace the existing sand filters; the new system must fit in a space approximately 55 feet by 33 feet with a maximum floor to ceiling height of 15 feet; all components must be skid-mounted with dimensions no larger than 15 feet by 20 feet to fit down the service hatch. Submit your information directly to Mr. Glenn Howard, at the Bureau of Reclamation (D-8230), P.O. Box 25007, Denver, Colorado, 80225. You may reach him by E-mail at ghoward@do.usbr.gov, by phone at 303-445-2252, or fax at -6354. The Contracting Officer is Terry K. Ford, Jr., Bureau of Reclamation, 1150 North Curtis Road, Suite 100, Boise Idaho, 83706-1234. You may reach him by E-mail at tford@pn.usbr.gov, by phone at 208-378-5100, or fax at -5108. (0057)

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