3618 W MUKILTEO BLVD SITE WORK FOR HARBORS EDGE TOWNHOMES 2025-10-27

SAGE HOMES NORTHWEST, LLC HARBORS EDGE DRAINAGE REPORT AUGUST 2022 S. SOURCE CONTROL OF POLLUTION The project is a multi -family site. The following source control BMPs will be implemented: • S406 BM Ps for Streets and Highways • S410 BMPs for Correcting Illicit Discharges to Storm Drains • S411 BMPs for Landscaping and Lawn/Vegetation Management • S415 BMPs for Maintenance of Public and Private Utility Corridors and Facilities • S417 BMPs for Maintenance of Stormwater Drainage and Treatment Systems • S420 BMPS for Painting/Finishing/Coating of Vehicles/Boats/Buildings/Equipment • S421 BMPs for Parking and Storage of Vehicles and Equipment • S429 BMPs • S430 BMPs for Urban Street • S431 BMPs for Washing and Steam Cleaning Vehicles/Equipment/Building Structure • S435 BMPs for Pesticides and an Integrated Pest Management Programs • S438 BM Ps for Construction Demolition • S440 BMPs for Pet Waste • S441 BMPs for Potable Water Line Flushing, Water Tank Maintenance, and Hydrant Testing • S442 BMPs for Labeling Storm Drain Inlets on Your Property • S444 BMPs for the Storage of Dry Pesticides and Fertilzers • S450 BM Ps for Irrigation • S451 BMPs for Building, Repair, Remodeling, Painting and Construction • S453 BMPs for Formation of a Pollution Prevention Team • S454 BMPs for Preventive Maintenance/Good Housekeeping • S455 BMPs for Spill Prevention and Cleanup • S456 BMPs for Employee Training • S457 BM Ps for Inspections • S458 BM Ps for Record Keeping 6. PRESERVATION OF NATURAL DRAINAGE SYSTEMS AND OUTFALLS The topography of the site generally falls to the north and west. The project intends to collect surface runoff and route it to a stormwater detention facility along the northwest portion of the site. This facility will discharge into the existing conveyance system in Mukilteo Boulevard. SPA 'E J PAGE 19