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GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> ` '-'44 <br /> A N D A S S O C I A T E S INSPECTIONS & TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> r <br /> POST TENSION DESIGN <br /> December 14,2005 <br /> L. NOA Project Number: E05116B <br /> 110 <br /> '`, PART II: NITRATE LOADING STUDY <br /> GRIFFITH PROPERTY <br /> L <br /> 5801 FOPPLANO LANE <br /> 6a STOCKTON, CALIFORNIA <br /> SJC APPLICATION NUMBER: PA-0400392 <br /> 6D <br /> INTRODUCTION <br /> /Our office was contracted by Mr.Tom Gassner of More-Gas Investments,Acampo to conduct a <br /> ,r Nitrate Loading Study for the property located at 11230 East Jahant Road,Acampo, California. <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 Check st, dated July 14,2003. <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 potential <br /> concentration of percolating effluent and rain fall over the long term. Where percolating effluent <br /> leaches into the ground,ground water quality may be impacted to some degree should the effluent <br /> reach ground water. <br /> 6a //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 convenient <br /> and simplified method to estimate long-term ground-water nitrate impacts on an area-wide basis. <br /> Hantzsche and Finnemore found that over a long period of time,water quality in the upper <br /> saturated ground-water zone closely approximates the quality of percolating recharge waters. They <br /> believe that their method is a good planning tool and provides useful information to planners and <br /> local officials but with some real limitations. In their article published in Ground Water, Hantzsche <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 902 Industrial Way,Lodi,California 95240 ■209.367.3701 0 209.369.4228 ■w .noandersonxom <br />