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Mar 29 se 1c'': 15p Val lei SC Research 668-asse � P- 1 ��E a� Much 27, 1999 FOIL- Mr.Paul Bagha Sacramento,CA FAX(9.16)983-7741 I p'RojF:Cr. r+nanada wa m Guar Namk Parkash 16101 West GMt Lina l-aad Tracy, CA 95376 S111RZCT: Nitrate 1,o dwg Study ProPW Dear Gentlemen: in respoum to your regumr,we are submit mg tl>izs proposal ouchningthe mope of services and 00sts garding the Nitrate Loading Study for yW project. OW proposal is bawd upon the fbHowing infaarnatiwr Our converaardon with Mr.Baia on Much 74,the collections of data thus far and a convcrsattota with Mr.Mke Huggins ofthe Saga)OM-L iia CottntY F-rkVirnn Mental H&*h Department. j SMPE OF SERVICES ML-r meeting with the San Joaquin Co=ty Enviza=mental HeallhDepartmm it was determined that the new septic system design will have to inct ude pnavisions for a mound system or equivalent design: Since the indigenous clay soils have+ ornoly poorpermeability as dooaumated in the Soil Suitability Study pert tests,a rnouad system desin nwst be incorporated. In addition,the rleparbnem also has knowledge of the groundwater rising to existing Wade in this area. For the rmnd system to work properly,a pump must be insWkd in the last compa invent of the mrd tam to pump the effluent up to the mound- Out investigation will begin with the history of the subject property and the surrou tiding land use to a one-halfrnile raifius. HWoriral land use whkb may have ercated a potential for nits ate impact,such as agricultural.indttstrW and/or residential sources will be investigated gid documerded. Field investigations will idelude cannai e%resaarth mer drilFing,gill gmundwater sampling and azzlysis,a&erwycensultation and pemitting. As refamoed,perc testing tubeen done fora Soil Suitability Study. The following in£onnadort dewilm the soil and groundwater assessments: To assess the underlying MAI and groundv+raW,a soil boring will be conducted in the am of the proposed mound system to sample soli for physical testing and chewical analyses. Physical testing will consist of hydrorWer taRting fir clay 00vftt and perrtteabilitjr testing of suhmrface samples to deteturtine the hydraulic conductivity.. Chernical testing will include bion excl ge capacity and indWewus tdtaagm content. These refrxmced parameters will quantit`Y the potenmral for nitrate loading and rhe potential for denitrification. P.O.Box 3794 a Uxlaek.California 95381 a (Z09)6WI403 r Fu-(209)668-2598 WWMs.:5C6.11000 A n 1 a 7 Z9 39Vd vHgvs -invd LVLL686 LO:L0 666T/TC/60