2021/09/29 Council Agenda Packet

This product must be certified as suitable for contact with or treatment of drinking water by an accredited certification organization in accordance with National Sanitation Foundation (NSF) and ANSI Standard 60, Drinking Water Treatment Chemicals - Health Effects. Such certification shall be at least at a Maximum Use Level (MUL) of 3.0 parts per million (ppm) as chlorine. For the WFP, the supplier's delivery trailer shall have a port to provide a sample for analysis prior to hooking up the trailer. Upon arrival, the supplier's driver shall draw a 1,000 milliliter (ml) sample of the sodium hypochlorite from the trailer in the presence of a City of Everett employee. The sample will be considered representative of the lot. Prior to off-loading at the WFP, the supplier shall allow the City to test the sample using the "Suspended Solids Quality Test for Bleach Using Vacuum Filtration" method. If the sample achieves a filtration time of less than five (5) minutes for 1,000 ml and is approved by the City employee, the load can be transferred into the designated storage tank. When performing the "Suspended Solids Quality Test for Bleach Using Vacuum Filtration" method, as described at https://powellsolutions.com/wp-content/uploads/2021/07/ES-1711-FS-06252020.pdf, a 1,000 ml sample must go through a 47-millimeter (mm), 8 filter in less than five (5) minutes using a vacuum pump set at 20 inches of Hg. The City can refuse delivery of any product which requires more than five (5) minutes filtration time in this test. Each shipment must be accompanied by a Certificate of Analysis, which shall include, but is not limited to, the following information: 1. Chemical name 2. Batch identification 3. Date of manufacture 4. Specific gravity 5. Percent of sodium hypochlorite by weight 6. Percent of excess caustic by weight Each shipment must be accompanied by a weight certificate from a certified weigher. The certificate must clearly display vehicle gross and tare weights. Delivery must be made in trucks or trailers dedicated solely to hauling sodium hypochlorite. The supplier must be able to deliver bulk shipments of sodium hypochlorite in quantities of 1,500 to 5,000 gallons. Delivery frequency could range from a truckload every other day during the summer, to less than once a week during the winter. Sales tax does not apply to bulk deliveries to the Water Filtration Plant. The truck or trailer must be equipped for unloading chemicals to storage tanks pneumatically. All trucks or trailers must be equipped with their own compressor for unloading. They must be equipped with at least thirty (30) feet of hose for connection to a male camlock quick connect. The supplier should check with the City to ensure the delivery hose has correct fitting and is long enough. Any sodium hypochlorite spilled during unloading shall be classified a hazardous material spill. It is the responsibility of the supplier to promptly clean up any sodium hypochlorite spilled during the transfer. The truck or trailer must carry a suitable spill cleanup kit at all times and the driver must be trained in its use. The storage tank sizes located at the WFP Hypochlorite Building are as follows: Page 13 of 27