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June 13, 2006 <br /> ! NOA Project Number: E05164A <br /> M <br /> Our study has found the proposed development may cause a buildup in the aquifer above 10 mg/L- <br /> N.The use of a modified filter bed system may reduce the impact of the project to groundwater. <br /> Though the modified filter bed system is "improved" to enhance treatment,it is difficult to quantify <br /> II, the denitrification capacity of these systems. With=iixnp-to—v—ed-nittificatio—n-Zmxthe_tarik-andw� <br /> dei itrifieati�jn within'the,tank�=disposal�eld;We ouid sd=te at�rhe m n,mupfof a�1'0Wrcent <br /> increase-in overall d trificat[on�whei c pa'red:t-�-o standard-systems. All septic system <br /> III <br /> Ell <br /> construction should follow the San Joaquin County On-Sate Wastewater Disposal Standards where <br /> applicable. <br /> II'I Fi We would also recommend the well not be use for drinking water since the water quality test <br /> indicates levels of nitrate above the MCL for drinking water. Potential repair options for the well <br /> should be discussed with the EHD. <br /> 5.1 Signatures <br /> i <br /> i <br /> The signatures of the environmental professionals involved in the preparation of this report can be <br /> found on the cover sheet at the front of this package. <br /> 5.2 Attachments <br /> All required attachments and appendices can be found at the rear of this package. <br /> 6.0 ' LIMITATIONS <br /> Our professional services were performed, our findings obtained, and our conclusions proposed in I <br /> accordance with generally accepted engineering principles and practices. This warranty is in lieu of ' <br /> F! <br /> all other warranties either expressed or implied. Test findings and statements of professional <br /> ,I opinion do not constitute a guarantee or warranty, expressed or implied. <br /> f <br /> F)' <br /> r <br /> Fj <br /> F! 7 <br /> F1 <br />