Laserfiche WebLink
I <br /> ANDERSON <br /> - �` GEOTECHN'ICAL <br /> _ - NEI. O AND1C.RSON i ENVIRONMENTAL <br /> A ,N D A 'S S O C :! A T E S <br />' I l INSPECTIONS & TESTING <br /> LABORATORY .SERVICES <br /> POOL ENGINEER-ING <br /> POST TENSION DESIGN <br /> February 15, 2006 <br /> NOA Project Number: E06006A <br /> I <br /> s <br /> PART II: .NITRATE LOADING STUDY <br /> DEL RIO PROPERTY <br /> F1 9103 SOUTH AIRPORT WAY <br /> Fil <br /> --FRENCH CAMP, CALIFORNIA <br /> - <br /> SJC APPLICATION NUMBER: PA=04-215 <br /> 161 <br /> iE <br /> E <br /> INTRODUCTION <br /> F] <br /> Our office was contracted by Ms.'Maria Del Rio to conduct a Nitrate Loading Study (NLS) for the <br /> property at 9103 South Airport Way,French Camp, California. Please refer to the relevant sections <br /> 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 /> Ni <br /> structure of the EHD"s trate Loading Study Requirements Checklist, 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 /> F1leaches 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. I <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 /> Ibelieve 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.Vater, Hantzsche <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 902 Mdustrial Way,Lodi,California 95240 0 209.367.3701 ■ 209.369.4228 ■www.noander,,on.com <br />