2323 ROSS AVE CAL PORTLAND 2019-05-07

EROSION AND SEDIMENT CONTROL PLAN South Parcel Fill Project E of SR 529 8s S of 28th Place SE Everett, WA 98201-4044 PERMIT WAR 125060 CalPortland Northwest, Inc. dba CalPortland owns property on Smith Island just north of the town of Everett in Snohomish County, Washington. A portion of the property is currently being developed by CalPortland to accommodate future planned uses of the site. Development activities will include clearing existing brush, grading, landscaping, and placement of 220,000 cubic yards of clean imported iill to raise the site elevation to two-feet above the base flood elevation. The General NPDES/stormwater discharge permit issued by the Department of Ecology (General Permit) requires CalPortland to prepare a Stormwater Pollution Prevention Plan (SWPPP) to minimize the possibility that stormwater that falls on the property could be contaminated by operations at the site. The General Permit authorizes discharges of stormwater associated with construction activity to waters of the state. CalPortland's SWPPP outlines the measures taken to reduce, eliminate, and prevent the pollution of stormwater through the application of best management practices (BMPs) at the site. A complete copy of the General Permit, this SWPPP, an Erosion and Sediment Control Plan, and an Emergency Spill Response Plan are available at CalPortlands Everett Ready M� facility as well as with Matt Hinck, Washington Division Environmental Manager. Site Layout The attached site diagram identiiies the project areas scheduled for grading and filling, as well as selected stabilization and structural BMPs to be implemented as part of the project. 2. Stabilization & Structural Practices The job site is the area to the south of 28th Place SE (South Parcel). Work on the South Parcel will disturb approximately 13.7 -acres. The General Permit requires the implementation of stabilization BMPs to minimize erosion and the transport of sediments and structural BMPs to divert flows from exposed soils or otherwise limit runoff and the discharge of pollutants from exposed areas of the site to the degree attainable. Stabilization and structural erosion control measures for the project are described on the attached construction (Grading/TESC) plans and include measures such as construction fencing and clearing limits (avoiding/maintaining existing vegetation wherever possible), silt fencing, silt curtains, seeding, mulching, and matting. All measures identiiied on the construction plans are incorporated by reference into this document. 7