Laserfiche WebLink
City of Everett <br /> EVERETT Reviewed for Permit 10/20/2021 <br /> WASHINGTON <br /> 3.6 Decommissioning <br /> 3.6.1 Dewatering System <br /> Once the water treatment system is no longer needed, water in the storage and pre- <br /> treatment tanks can be processed at a slower rate to remove the remaining water <br /> without pulling any sediment from the tanks. All valves should be closed and then pipes <br /> and hosed can be cut out and stockpiled. <br /> 3.6.2 Filtration Media <br /> A Vactor truck will need to remove all the sand media from the disposal. The vessels <br /> and pods will need to be thoroughly washed and the water also disposed of in a <br /> controlled way. <br /> 3.6.3 Storage Tank Sediment <br /> Storage and Pre-treatment tank sediment should be removed by a Vactor truck and <br /> removed for disposal. The tanks will need to be thoroughly washed and the water also <br /> disposed of in a controlled way. <br /> 3.6.4 Filtration System Checklist <br /> Procedure Requirement OK Not Ok <br /> Check power supply Filter system must have adequate <br /> power supply to operate <br /> Manual check floats for Filter system floats must work for <br /> functionality automated operations <br /> Check primary pump for Pump must supply adequate flow <br /> proper operations and pressure to the filter system <br /> 16 <br />