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Y <br /> KL E/NFEL DER <br /> Bright People.Right Solutions. <br /> April 30, 2020 <br /> Kleinfelder Project No. 20210068.001A <br /> Mr. Carlton Hill <br /> D. Hill Trucking <br /> 28850 South Tracy Boulevard <br /> Tracy, CA 95377 <br /> SUBJECT: Soil Suitability and Nitrate Loading Study <br /> D. Hill Trucking <br /> 28850 South Tracy Boulevard <br /> Tracy, California <br /> Dear Mr. Hill, <br /> The attached report presents the results of Kleinfelder's soil suitability and nitrate loading study <br /> for the existing septic system at the D. Hill Trucking facility located at 28850 South Tracy <br /> Boulevard in Tracy, California. The attached report includes background information regarding <br /> the project site and proposed construction, past and present use of the site, existing septic tank <br /> performance and permitting, and the general groundwater conditions in the project area. In <br /> addition, discussions regarding our investigative procedures and the site conditions encountered <br /> during our field exploration are included. Finally, the results of our percolation tests, nitrate loading <br /> calculations and subsequent conclusions are presented. <br /> Kleinfelder appreciates the opportunity to provide these services for the project. If there are any <br /> questions concerning the information presented in this report, please contact this office at your <br /> convenience. <br /> Respectfully Submitted, SIGNAL <br /> yS <br /> KLEINFELDER, INC. <br /> !k <br /> NUJ X3011 �c <br /> V <br /> GEOTELc <br /> BrAr�of r't <br /> James A. Wetenkamp, PG, CEG Steven Wiesner, PE, GE <br /> Project Engineering Geologist Principal Geotechnical Engineer <br /> JW:bn <br /> 20210068.001A/ST020R110989 Page ii of iii April 30, 2020 <br /> ©2020 Kleinfelder www.kleinfelder.com <br /> KLEINFELDER 2001 Arch Airport Road, Suite 100, Stockton, CA 95206 p 1209.948.1395 f 1209.234.4700 <br />