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FFOnptember 8, 2010, a Technical Data Sheet for No:4 x No. 8 Sand, Product Code 1203 from <br /> te Construction Company was received from Mr. Christofferson. The attached particle-size <br /> graph(See Number TO under the Attachments) illustrates the material to be a poorly-graded sand <br /> with a greater percentage of larger-sized sand particles, and therefore.greater permeability. This <br /> material possesses an Effective Size of 1.6 mm and a Uniformity Coefficient of 2.1. <br /> Consequently, the Granite Construction Company material Product Code 1203 is acceptable as <br /> .. <br /> import base under the Infiltrator Chambers, with an application rate of approximately 3-5 <br /> gallons/ft'/day. <br /> If there should be any questions regarding this document,.please contact the undersigned. <br /> 1, Respectfully submitted, <br /> a4tafessiQ�� <br /> CHESNEY CONSULTING <br /> No.75479 <br /> * Exp.June 30,20/2- <br /> XI <br /> 0,20/2 <br /> Don Ches ey, P.E. `J� Chit ti+ <br /> Registered Civil Engineer#C75479 f <br /> 7 <br /> cc: Mr. Carl Christofferson, Sutter Home Winery '30-/a <br /> San Joaquin County Environmental Health Department <br /> F. <br /> Attachments: <br /> OO Technical Data Sheet: Granite Construction Company,No. 4 x No. 8 Sand, Product Code 1203 <br /> Particle Size Analysis Graph <br /> OO Material Evaluation: KRC Aggregate, Inc., Reject Concrete Sand <br /> Particle Size Analysis Graph <br /> i <br /> Page 2 of 2 <br /> Chesney Consulting <br />