Specifications include, but are not limited to: Bids are requested to furnish and deliver, as called for over a twelve month period, the amount of powdered activated carbon (PAC) needed by the City of Minneapolis in the operation of its water treatment facilities, all in accordance with the requirements of ANSI/AWWA Standard B600 (latest version) except as specified herein. The Powdered Activated Carbons shall have been tested by an ANSIaccredited laboratory and shown to comply with ANSI/NSF Standard 61 “Drinking Water System Components - Health Effects”. The annual estimated quantity needed for such operation is 500 tons (1,000,000 pounds). Use is highly dependent upon water quality, PAC performance, and overall water production rates. This estimated quantity shall not be deemed to guarantee either a minimum or restrict the maximum amount to be furnished.