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LGEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> AND'-44 ASSOC IATES <br /> 6. INSPECTIONS & TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> July 5, 2005 <br /> IV NOA Project Number: E05027A <br /> I L NITRATE LOADING STUDY <br /> TIME OIL PROPERTY <br /> L 13475 NORTH JACK TONE ROAD <br /> L LODI, CALIFORNIA <br /> SJC APPLICATION NUMBER: UNASSIGNED <br /> L <br /> 1.0 INTRODUCTION <br /> LOur office was contracted by Mi.John Sandhop of Time Oil Company to conduct a Nitrate <br /> Loading Study (NLS) for the property at 13475 North Jack Tone Road,Lodi,California. Please <br /> refer to the relevant sections of the Soil 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, 2003. <br /> Because of concern regarding nitrate leaching into ground water from septic systems, a nitrate <br /> 6. loading analysis was required by the EHD for the proposed development to measure the potential <br /> concentration of percolating effluent and rainfall 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 /> 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 /> L <br /> 1 <br /> LODI ■ SACRAMENTO ■ MODESTO ■ RENO <br /> r.. <br /> ENVIRONMENTAL DIVISION 902 Industrial Way,Lodi,CaGforn a 95240 ■209.367.3701 ■ 209.369.4228 fax ■w .noandersonxom <br /> r <br />