9826 7TH AVE SE 2025-06-25 - Laserfiche WebLink

The comments below were generated from this project's City of Everett Industrial Pretreatment Reviewer. All questions shall be routed through this project's Public Works Reviewer Thad Newport with City of Everett Permit Services (TNewport@everettwa.gov). # Document Sht/Pg Reviewer's Comment Designer's Response Initials 2-inch diameter, it is most likely a roof drain connection to the canopy. This is a private pipe with minimal conveyance capacity and the canopy area is included in the 1,460 square feet fuel island drainage basin. It does not warrant further investigation. City Comment: While the designer states that the pipe in question does not warrant further investigation, since it has been indicated that it is "likely a roof drain connection to the canopy", the source must be confirmed. If the source is from the roof of the canopy, the flow from the roof of the canopy (this pipe) must be directed to the stormwater system, not to the sanitary sewer. Per EMC 14.40.050.13.12, roof runoff and stormwater are prohibited discharges stormwater to the sanitary sewer. If the pipe's source is found to be something other than the roof drain of the canopy, the designer must indicate the source before any approval of connection of this source is allowed to the sanitary sewer. 6 Civil Plans - 2nd Review Comment: The berm around the west fuel island will The existing asphalt pavement along the need to be redone and surround the entire fuel island, to southern concrete pad edge slopes south prevent stormwater from reaching the two catch basins located (away from the pad) at approximately 1%. within the fuel island area. The berm should be situated such Drainage cannot enter the concrete pad that it encompasses the current canopy area. The areas outside from the south, so a berm is not required at of the bermed area will need to be sloped such that it will not be that location. Stormwater runoff from areas able to flow over the berm and into the fuel island area. (EMC south of the island will be collected by 14.40.050.B.12) existing storm catch basins and not enter Designer's Response: The area tributary to the fuel island catch the sanitary sewer. basin is approximately 6,600 square feet. The catch basins from There are existing asphalt berms that were this area drain to a 1,000 gallon OWS vault. According to OWS not shown on the previous plans. The sizing charts a 530-gallon volume structure would be required. existing asphalt berm along the west and The final design proposes to revise the existing drainage piping north island edge directs runoff north and to convey the 6,660 square feet tributary area to the sanitary south. The stormwater directed north flows sewer via the 4,500 gallon containment tank. The combined to a storm catch basin along the north side peak flow proposed (in gpm) to enter the sanitary sewer system of the island. As noted above, stormwater Page 6 of 8