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CLACKAMAS <br />COUNTY <br /> <br />Department of Transportation & Development <br /> <br /> THOMAS J. VANDERI'ANDEN <br /> DIRECTOR <br /> <br />December 19, 1995 <br /> <br />Scott Andrews <br />Columbia River Sand & Gravel <br />PO Box 61428 <br />Vancouver, WA 98666 <br /> <br />SUBJ= <br /> <br />SAND FILTER MEDIA <br />Columbia River Sand & Gravel <br /> <br />We are in receipt of the sieve analysis dated December 18, 1995 <br />for C.R.S.G. filter sand. We find that the sand meets minimum <br />DEQ specifications for "medium sand" for sand filter <br />construction with the following condition: <br /> <br />The material is approved for a period of 90 days from the <br />date of the test pit. <br /> <br />Please feel free to contact me should you have questions <br />regarding this matter. <br /> <br />WILLIAM H. DOAK - Sr. Soil Scientist <br />Building Services <br /> <br />/ep <br /> <br />c: Soils Staff <br /> <br />ENCLOSURES <br /> <br />MARION COUNTY <br />BUILDING INSPECTION <br /> <br />902 Abernethy Road · Oregon City, OR 97045-1100 · (503) 655-8521 · FAX 650-335t <br /> <br /> <br />