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Ft <br /> NEIL <br /> ANDERSON <br /> GEOTECHNICAL <br /> NEIL 0. ANDERSON € ENVIRONMENTAL <br /> A N D A 5 S O C i A T E S i INSPECTIONS a TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> March 16, 2006 <br /> ��, NOA Project Number: E06011A <br /> F1 <br /> PART II: NITRATE LOADING STUDY <br /> SEGURA PROPERTY <br /> 24195 SOUTH CABE ROAD <br /> Fi TRACY, CALIFORNIA <br /> SJC APPLICATION NUMBER: UNASSIGNED <br /> F <br /> INTRODUCTION <br /> { Our office was contracted by Mrs. Grace Segura of Manteca, California to conduct a Nitrate <br /> Loading Study (NLS) for the property at 24195 South Cabe Road,Tracy, California. Please refer to <br /> the relevant sections of the attached Soil Suitability Study (SSS) for introductory project details. <br /> To expedite San Joaquin County Environmental Health Department (EHD) review, the <br /> F1 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, 2003. <br /> FtBecause 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 /> hThe 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 /> P <br /> and simplified method to estimate long-tern 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 mater, Hantzsche <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 9021,,du,,,ial Way,Lodi,California.95240 ■.209.367.3701 0 209.369.4228 ■www.noand,s;...com <br />