Laserfiche WebLink
�j GEOTECHNICAL <br /> ± NEIL O, ANDERSON ENVIRONMENTAL <br /> �# A N D A 5 S O C I A T .E S <br /> INSPECTIONS & TESTING <br /> i <br /> LABORATORY SERVICES <br /> e POOL ENGINEERING <br /> POST TENSION DESIGN <br /> i <br /> February 28, 2007 <br /> NOA Project Number: E07023A <br /> F, PART II: NITRATE LOADING STUDY <br /> SJC APPLICATION NUMBER PA-06-651 <br /> 8853 SOUTH MANTHEY ROAD <br /> FRENCH CAMP, CALIFORNIA <br /> E- INTRODUCTION <br /> Our office was contracted by Dave Silva Trucking of French Camp to conduct a Nitrate Loading <br /> 1 Study (NLS) for the property at 8833 South Manthey Road, French Camp, California. Please refer <br /> to 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 /> formatting of this report has been designed to follow, to the greatest degree possible, the <br /> ll structure of the EHD's Nitrate Loading Study Requirements Checklist, dated July 14,2003. <br /> 1 <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 thc.effluent <br /> P, 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 Finnexnore found that over a long period of time,water quality in the upper <br /> I 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 /> �f local officials but with some real limitations. In their article published in Ground Water, Hantzsche <br /> _1 and Finnemore mention that "...the equation ignores dispersion,lateral flow, and mixing with <br /> 2 <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> �{ ENVIRONMENTAL DIVISION 902Industrial Way,Lodi,California 95240 ■209.367.3701 ■ 209.369.4228 ■www.noandersonxom <br /> i <br />