Laserfiche WebLink
March 6,2001 <br /> Job Number: LG00-426 4 <br /> Page 1 1 <br /> permit review has shown that conventional septic systems with-seepagep its are used in the area. <br /> The depth to ound water was found to be about SS to S feet:The nitrate level measured in the <br /> waterwell exceeded the Environmental Protection Agency maximum contaminate level of 45 <br /> mg/L NO3 or 10 mg/L-,N was found to be 104 nWI NO3 {22.8 mg/1-N). No DBCP was found in <br /> the ground water. <br /> The nitrate loading-analysis has.shown-that the ro <br /> � g y p posed development will not cause any w <br /> further build-up of nitrates in the ground water.-This is primarily due to the.large-proposed - - <br /> -parcel size(lowez development density.). The-percolating nitrate concentration from the smallest- <br /> iparcel°size of five y(S) acres.,with residence.occupancy-of fye'L51-ti ale-is-2.82 inWt-N-LLThe x <br /> maximum contaminate level established by-the EPA foz nitrogen in water is 10 rrlg/L-N? Table S <br /> illustrates that larger acreage properties results in even lower nitrate concentration of percolate_ <br /> Further analysis suggests'that a'- arcel'"sizedevelo men`t density) equal'to andTlesS than 1.1 acres <br /> under the sai-ne conditions�cbuld otentially cause.buildup o -nitrates above safe drinking�ater, <br /> level of 10 mg/L-N established by the Environmental Protection Agency(EPA),,/ <br /> Based on the results of this study, the proposed project is suitable for use with a <br /> conventional septic systema We'estimate that proposedproject will not negatively impact ground <br /> water quality provided'our recommendations are followed. The recommendations for the project <br /> are as follow's <br /> 1) Septic systems utilizing•leach.lines and seepage pits or equivalent are' <br /> recommended. <br /> _ 2) Do not increase the development density described in this report. A 5-acre parcel <br /> size and larger was determined not to cause buildup of nitrates in the ground <br /> water. <br /> 3) Follow the San Joaquin County Public'Health Services Sewage Standards. <br /> 4) Since the water quality test indicatedthe aquifer(probably shallow aquifer) was . <br /> impacted with high nitrates, we suggest thafyou use bottled drinking water or <br /> some other source other than the well water, You should.consult with a driller to <br /> determine if the problem can be fixed. Probably you will need to'drill a deeper <br /> well which is draws from a deeper and hydraulicly separate aquifer. <br /> - • . s <br /> a <br /> r <br /> r <br /> �jsoc <br />