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,SENT BY. 1-22-08 ;12;58fM tSKUWIv 'tvJJ tru�u��r «�•V u� ���- <br /> B 0 W N ANll <br /> C A L D W E L L <br /> January 22, 1998 <br /> Mr. Ronald Rowe <br /> san Joaquin County Public Health SftViecs <br /> Environmental Health Division <br /> 304 Webster Avenue <br /> Post Office I-Sox 388 017-6271-0113 <br /> Stockton,California 95201-03$8 <br /> Subject: Field Work,T&T Truckiug, 11369 North Highway 99 in T,odi,California <br /> Dear Mr.Rowe: <br /> On behalf of T&T Trucking, Brow] and Caldwell (130 is conducting a preliminary <br /> hydrologic study at the subject site. The objective of this study is to collect water level data <br /> in existing on site wells for appioxttuately seven days. The purpose of this limited study is an <br /> attempt to determine if fluctuations in water levels May indicate an hydrologic influence on <br /> the water table by the primary domestic well,which is screened in a deeper zone. <br /> The following describes the hydrogeology, scope of works and time of completion for a <br /> summary letter of the results of this study. <br /> Hydrogeology <br /> The shs.11ow water-bearing zone (WBZ) represents the first encountered water beneath the <br /> site, approximately 78 feet below ground surface. One gTowilwater monitoring well (MW-1) <br /> is screened across this zone (73.5 to 83.5 feet bgs): Based on the well log of the primmy <br /> domestic well on the site, the detT WBZ is assumed to be within the interval or 167 to 247 <br /> feet bgs. There are multiple sand renes within this interval that may or may not be <br /> interconnected, however, fcir the purpose of this study the shallowest sancl interval (168-180 <br /> fact bgs) is refcrcmced as the deep Wr3T. See l:igum 1 for the vacll locations. <br /> In addition to MW-1 and the primary domestic well, there is an "unused" domestic well on- <br /> site <br /> nsite an=d is assumed to have been installed in the 1950s. This well has not used by 'T'&T <br /> Trucking for several years and the peimp was pulled on January 14, 1998. There is no well <br /> log available for this well ,,o the total depth and well screen interval is unknown. Based on <br /> conversation,, with Mr. Te y Tarditi, it was thought the well was at least 15Q to 200 reet <br /> deep. <br /> F:627MORREsal UR-1-n(c. <br /> Frwinviu HdedFtkyjowpo)pAMIr.rn'ia ATUT-AdmfykalSuY+rv? <br /> 9616 Ml(if)m AVI:NUI„ Sala 600, SAL EARNNrn, CA 95927.2623 <br /> (916) 444-b123 I;AX 010 S56 5211 <br />