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5 <br />Pacific Pride <br />- <br />There is a catch basin near the Pacific Pride fuel island that <br />The Pacific Pride fuel island catch basin has a <br />Catch Basin <br />is proposed to be connected to sewer and not covered by <br />tributary area of approximately 1,460 square feet. <br />the canopy. It appears that runoff from the driving area <br />There is approximately 460 square feet of open <br />around Pacific Pride is presently graded toward this catch <br />concrete pad between the fuel island and the 7tn <br />basin. The runoff will need to be redirected so that it does <br />Avenue SE right-of-way line. Drainage from the <br />not enter the sewer. The area being connected to sewer <br />Pacific Pride fuel island flows through a 1,000 gallon <br />will need to meet any other requirements per Industrial <br />OWS prior to discharge from the site. <br />Pretreatment. [DCSS 4-5 and COE Pretreatment Ordinance <br />The final design proposes to revise the existing <br />2.1.13.12] <br />drainage piping to convey the 1,460 square feet of <br />Pacific Pride drainage area to the sanitary sewer. <br />The combined peak flow proposed (in gpm) to enter <br />the sanitary sewer is provided with the submittal. <br />The proposed berm is not necessary to control this <br />drainage area. <br />6 <br />Stormwater <br />- <br />It appears that an oil/water separator (OWS) will remain <br />The 300 gallon oil/water separator will remain in <br />Oil/Water <br />connected to the storm conveyance. Provide the following: <br />use for the storm conveyance. This structure was <br />Separator <br />a. A detail of the OWS showing the treatment flow rate <br />installed under pervious permits with the City of <br />and peak capacity or bypass capacity. <br />Everett. We have confirmed that the OWS has a tee <br />outlet connection and is functioning as designed. <br />b. Supporting information to demonstrate the OWS will <br />function as designed such that separated oil is not <br />redispersed. <br />7 <br />Oil Stop Valve <br />_ <br />Provide a detail for the oil stop valve. <br />The oil stop valve will be removed in the final <br />design. No detail is shown on the plan. <br />8 <br />Manual <br />_ <br />It is our understanding that the manual shutoff valve is not <br />The oil stop valve is currently closed, which stops <br />Shutoff Valve <br />working. Provide a work order invoice to indicate that it <br />ALL stormwater discharge to the downstream <br />has been repaired. Show the shutoff valve location on the <br />system. The final design proposes to revise the <br />site plan. <br />storm conveyance piping so stormwater from the <br />parking lot discharges to the downstream storm and <br />If the manual shutoff valve will no longer be part of the <br />fuel island catch basin pipes will be routed to the <br />storm system, can the oil stop valve be manually closed, <br />public sewer. After the storm conveyance <br />even when valve vault is full of water? <br />alterations, the valve will be removed and the outlet <br />plugged. <br />Page 8 of 10 <br />