812 35TH ST 2022-03-07 - Laserfiche WebLink

• SECTION SIX FIELD GUIDE TO VERIFYING SOIL QUALITY AND DEPTH IN NEW LANDSCAPES This guide is provided to help professional inspectors verify implementation of soil 'fl improvements to fulfill BMP T5.13 "Post STEP 2: Inspect delivery tickets for compost, Construction Soil Quality and Depth" in the topsoil and mulches. Washington Department of Ecology's Stormwater Management Manual Western Permitee must provide original delivery tickets for all soil Washington. and mulch products.Compare delivery tickets with the SMP to match the following information: 'r • Delivery location. The main conditions to be confirmed are: • Total quantities for each soil product and mulch. 1. Provision of eight inches of topsoil containing 10% • Product descriptions and sources. organic matter in planting beds,or 5%in turf areas. If materials other than those listed in the SMP were 2. Scarification of compacted subsoil four inches below delivered,laboratory test results must be provided to ,• the topsoil layer(for a total uncompacted depth of 12 confirm that they are equivalent to approved products. inches). 3. Placement of two inches of mulch on all planting beds. STEP 3: Verify depth of amended soil and scarification. Use a shovel to dig at least one test hole per acre for turf Site Inspection Supplies and one per acre for planting beds to verify eight inch • A copy of the approved Soil Management Plan(SMP)for topsoil depth(below mulch layer),incorporation of the site,with site drawing. amendments,and four inches of uncompacted subsoil. • A sturdy shovel • Tape measure or 12"ruler • 3/8 inch diameter 3-4 foot stainless steel"rod penetrometer"with a 1/8"bevel cut into the tip at 30 ,40 degrees from the side,and a 90 degree bend at top to form a handle(see illustration,next page). • Field Verification Form to record results MULCH LOOSE SOIL • • • is , • with visible dark 4 • • ,41 The following steps may be completed at multiple visits • organic matter • as a project progresses or in one final project approval • inspection,depending on local practices: LOOSE OR FRACTURED STEP 1: Compare site conditions with approved SUBSOIL / 11:11 Soil Management Plan (SMP). • The SMP approved with the site permit describes soil treatments approved for each area.Make sure site Test holes should be about one foot deep(after first conditions match these details in the SMP: scraping away any mulch)and about one foot square. • Site location and permit holder. • Turf and planting areas match approved drawings. Eight Inch Depth of Amended Soil.The top eight inches • Areas to remain as undisturbed native soil and of soil should be easy to dig using a garden spade driven • vegetation have been fenced off during construction to solely by your weight.The soil should be darker than the unamended soil below,and particles of added organic prevent soil compaction or damage to plants. • 14