2410 RAILWAY AVE 2025-08-15 - Laserfiche WebLink

1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 l PENSKE TRUCK LEASING EVERETT ONSITE IMPROVEMENTS CONSTRUCTION STORMWA TER POLLUTION PREVENTION PLAN Conditions of Use Sitts & Hill Engineers, Inc. Job Number 17,710 • Construction projects of any size or type can benefit from having materials on hand. A small commercial development project could have a roll of plastic and some gravel available for immediate protection of bare soil and temporary berm construction. A large earthwork project, such as highway construction, might have several tons of straw, several rolls of plastic, flexible pipe, sandbags, geotextile fab- ric and steel "T" posts. • Materials are stockpiled and readily available before any site clearing, grubbing, or earthwork begins. A large contractor or developer could keep a stockpile of mater- ials that are available for use on several projects. • If storage space at the project site is at a premium, the contractor could maintain the materials at their office or yard. The office or yard must be less than an hour from the project site. Design and Installation Specifications Depending on project type, size, complexity, and length, materials and quantities will vary. A good minimum list of items that will cover numerous situations includes: Material Clear Plastic, 6 mil Drainpipe, 6 or 8 inch diameter Sandbags, filled Straw Bales for mulching, Quarry Spalls Washed Gravel Geotextile Fabric Catch Basin Inserts Steel "T" Posts Silt fence material Straw Wattles Maintenance Standards . All materials with the exception of the quarry spalls, steel "T" posts, and gravel should be kept covered and out of both sun and rain. . Re -stock materials used as needed. 2014 Stormwater Management Manual for Western Washington Volume 11 - Chapter - Page 312 SITTS & HILL ENGINEERS, INC. TACOMA, WASHINGTON 47