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GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> A N D A S S O C I A T E S INSPECTIONS a TESTING <br /> LABORATORY SERVICES <br /> r POOL ENGINEERING <br /> POST TENSION DESIGN <br /> September 10, 2004 <br /> NOA Project Number: E040104A <br /> PART II: REVISED NITRATE LOADING STUDY <br /> LOT LINE ADJUSTMENT LA-01-105 <br /> 13161 SOUTH JACK TONE ROAD <br /> STOCKTON, CALIFORNIA <br /> INTRODUCTION <br /> Our office was contracted by Mr. Greg Arnaudo of Arnaudo Brothers Inc. to conduct a <br /> Nitrate Loading Study (NLS) for the proposed lot line adjustment at 13161 South Jack Tone <br /> Road, Stockton, California. Please refer to the relevant sections of the attached Soil <br /> Suitability Study (SSS) for introductory project details. <br /> To expedite San Joaquin County Environmental Health Department (EHD) review, the <br /> formatting of this report has been designed to follow, to the greatest degree possible, the <br /> structure of the EHD's Nitrate Loading Study Requirements Checklist, dated July 14, <br /> 2003. <br /> Because of concern regarding nitrate leaching into ground water from septic systems, a nitrate <br /> loading analysis was required by the EHD for the proposed development to measure the <br /> potential concentration of percolating effluent and rain fall over the long term. Where <br /> percolating effluent leaches into the ground, ground water quality may be impacted to some <br /> degree should the effluent reach ground water. <br /> The method utilized for the nitrate loading analysis is based on a simple mass balance formula, <br /> discussed in a published article by Hantzsche and Finnemore (1992), which provides a <br /> convenient and simplified method to estimate long-term ground-water nitrate impacts on an <br /> area-wide basis. <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 902 Industrial Way,Lodi,Califomia 95240 ■209.367.3701 IN 209.369.4228 ■w .noandersonxom <br /> L <br />