Specifications include, but are not limited to: Estimated annual usage: 450 Tons (total both plants). To meet AWWA standard b 202-77, or latest revision. Lime to be delivered in bulk form in truck load lots, and unloaded into bulk lime dispenser storage tanks. LIQUID FERRIC SULFATE CHEMICAL REQUIREMENTS: The material shall conform to AWWA B 406-92 or most current standard published by AWWA. The material shall conform to NSF 60, “Drinking Water Treatment Chemicals” and shall be certified by NSF as meeting this standard. The material shall contain less than 500 ppm chlorides and less than 100 ppm manganese. Liquid Ferric Sulfate shall contain not less than 12% water soluble ferric iron, except by agreement between the supplier and the City of Fort Smith. No additional payment will be made for any shipment of Liquid Ferric Sulfate which exceeds the 12 % minimum. IMPURITIES: The Liquid Ferric Sulfate supplied shall contain no substances in quantities capable of producing deleterious or injurious effects on the health of those consuming water that has been properly treated with ferric sulfate. Liquid Ferric Sulfate shall not be a by-product from any other process or be manufactured using materials that are either by-products or waste products. Under this specification, Liquid Ferric Sulfate that is produced by a virgin material (naturally occurring ore) shall be the only materials accepted by this utility. Certified Weight Tickets and Certificate of Analysis shall be provided with each delivery.