7500 HARDESON RD 7 ELEVEN 2024-02-29

Trade Name Chemical/Physical Stormwater Material Description(') Pollutants') Wood preservatives Clear amber or dark brown liquid Stoddard solvent, petroleum distillates, arsenic, copper, chromium Hydraulic oil/fluids Brown oily petroleum Mineral oil hydrocarbon Gasoline Colorless, pale brown or pink Benzene, ethyl benzene, etroleum h drocarbon toluene, x lene, MTBE Diesel fuel Clear, blue-green to yellow liquid Petroleum distillate, oil & grease, naphthalene, x lenes Kerosene Pale yellow liquid petroleum Coal oil, petroleum distillates hydrocarbon Antifreeze/coolant Clear green/yellow liquid Ethylene glycol, propylene glycol, heavy metals (copper, lead, zinc Erosion Solid Particles Soil, Sediment (') Data obtained from MSDS when available. 7.10 Control Dewatering Dewatering during this project is not anticipated. 7.11 Maintain BMPs Materials on Hand (BMP C150) will be implemented. In order for the ESC facilities to function properly, they must be maintained and sediment removed on a regular basis. Inspection and sediment removal shall be performed on all ESC facilities, as described in the following inspection schedule. The CESCL (BMP C160) shall be responsible for inspecting the CSWPPP BMPs. Erosion control facilities shall not be allowed to fall into disrepair. All ESC facilities shall be inspected, at a minimum, according to the following schedule. Dry Season: Once a week. Wet Season: Daily and after every storm event that produces runoff. Needed repairs shall be made within 24 hours or immediately if possible. If necessary, the Engineer of Record or City will instruct the Contractor to provide additional facilities as warranted during field inspections. The following inspection/maintenance schedules shall be utilized to ensure the ESC facilities are functioning as designed: Construction Entrances (BMP C105) The construction entrances shall be inspected once a week during the dry season and after every rainfall event during the wet season. If the entrance is not preventing sediment from being tracked onto adjacent pavement, then alternate measures to keep the pavement free of sediment shall be used. This may include street sweeping, an increase in the dimension of the entrance, or the installation of a wheel wash. Any quarry spalls that are loosened from the pad that end up on the roadway shall be removed immediately. Additional rock shall be added periodically to maintain proper function of the pad. Construction StPollution Prevention Plan 101DOM Everett 7-Eleven Parking Expansion 7 2180309.11