2320 RAILWAY AVE INTERWEST CONSTRUCTION INC 2023-06-12

INTERWEST — EVERETT CONTRACTOR'S YARD INTERIM FILL PROJECT Sitts & Hill Engineers, Inc. CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN Job Number 17,733 Hydro -demolition dge and road surfacing Design a Installation Specifications . Vacuum s and cuttings during cutting and surfaciZasphalt . Shiny and cutti s shall not remain on permanent co overnight. . Slurry and cuttings sh not drain to any natural nstructed drainage con- veyance including storm con- e systems. This y require temporarily blocking catch basins, . Dispose of collected slurry and c n m a manner that does not violate ground water or surface water quality sta s. . Do not allow process water g erated d ' g hydro -demolition, surface rough- enZ ilar operation drain to any n raI or constructed drainage con- veuding sto ater systems. Dispo rocess water in a manner that dolate g d water or surface water qu standards. . Hdi se cleaning waste material and dem 'lion debris in a manner thcause contamination of water. Dispose of s eping material from a piper at an appropriate disposal site. intetandards Co nually monitor operations to determine whether slung, cuttings, or pNmeasure uld enter waters of the state. If inspections show that a violation of watards could occur, stop operations and immediately implement preventive as berms, barriers, seconda ry containment, and vacuum trucks. BMP C153: Material Delivery, Storage and Containment Purpose Prevent, reduce, or eliminate the discharge of pollutants to the stormwater system or ' watercourses from material delivery and storage. Minimize the storage of hazardous materials on -site, store materials in a designated area, and install secondary con- tainment. Conditions of Use These procedures are suitable for use at all construction sites with delivery and storage of the following materials: 2014 Stormwater Management Manual for Westem Washington Volume 11- Chapter 4 - Page 315 SI1TS & HILL ENGINEERS, INC. 46 ' TACOMA, WASHINGTON