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The comments below were generated from this project's City of Everett Industrial Pretreatment Reviewer. All questions shall be routed through this project's <br />Public Works Reviewer Thad Newport with City of Everett Permit Services (TNewport@everettwa.gov). <br /># <br />Document <br />Sht/Pg <br />Reviewer's Comment <br />Designer's Response <br />Initials <br />1 <br />Civil Plans <br />— <br />In a response from the designer, it was indicated that the <br />The design was revised to pick up the 2-inch <br />stormwater flow from the roof of the canopy at the Pacific Pride <br />roof drain pipe and connect it to existing <br />fuel island may be currently being directed to a catch basin that <br />storm catch basin located in the drive lane <br />is being proposed to be discharged to the sanitary sewer. The <br />south of the island. Canopy roof area (663 <br />discharge location for the stormwater flow from the roof of the <br />SF) will drain to the storm system per City <br />canopy at the west fuel island must be determined. If the flow is <br />request. <br />being directed to an area that is being proposed to be connected <br />to the sanitary sewer, the plans must reflect changes to have <br />that flow directed to the stormwater system. Stormwater flow <br />from the roofs of the canopies will not be allowed to go to the <br />sanitary sewer, per EMC 14.40.050.13.12, as it is a prohibited <br />discharge. <br />2 <br />Civil Plans <br />- <br />2"d Review Comment: The site plan does not indicate an <br />Turn down 90 degree bends will be installed <br />oil/water separator (OWS) between the catch basins and the line <br />under the approved interim plan. No <br />discharging to the sanitary sewer. If any separators already exist, <br />further action required, per City comment. <br />please indicate on the plan (along with full details of the OWS, <br />including sizing), otherwise, an appropriately sized oil/water <br />separator will need to be installed as a pretreatment system to <br />prevent excessive amounts of oil, sand and inert solids from <br />entering the sanitary sewer. (EMC 14.40.130.C) The <br />interceptor(s) shall be maintained in accordance with EMC <br />14.40.130. D. <br />Designer's Response: Additional field work and research has <br />determined there are three (3) existing OWS vaults on the <br />property. There are two (2) 1,000 gallon OWS vaults and one (1) <br />300 gallon OWS vault. The survey has been updated to show the <br />OWS locations and volumes. The total volume provided by the <br />existing OWS vaults is 2,300 gallons. The required treatment <br />volume based on drainage area is 1,833 gallons. The existing site <br />infrastructure exceeds the minimum required design volume. <br />As part of the Interim Discharge Prevention Plan, the project will <br />install downturned elbows on the outlet of both 1,000 gal OWS. <br />Page 2 of 8 <br />