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-P0 rN <br /> SAN <br /> j 9 gTg k N <br /> TY <br /> i Rmia-dt i� YAeran. ILE.H.`r. rnArne c - n, rtrzrnrws <br /> /I p to tEa;tuehet �: vennc rhildFleor „ 1 t�„ K , » c r I . I . <br /> laurteA. Cotuun R.E.H. v `,tocicton Califortoo 95202-2708 m,lcetirt5g „s Kr..il. s rzn , <br /> As tor � : r <br /> Margaret Ligorio, R r 11 . 5 <br /> Robw McClellon,c. _ eepon - <br /> 3420 <br /> Fax : (209 ) 464-0139 Jcff Ca rn,esc", R..r rr. s - <br /> Website: www.sjgov.orb/ehd/ (Casey Fulev, R. E.x.s, <br /> OCT 1 9 2006 <br /> ROGER HUCKINS _t„ QOOkiFERNANDO HATCHER <br /> t .e,. "v <br /> 3436 ADMIRAL DRIVE ; ? , 1201 S CENTER ST <br /> STOCKTON CA 952D9 Ot. i STOCKTON CA 95206 <br /> tr: <br /> RE: Femando's Place Site Code : 505309 <br /> 1201 S . Center St. (APN : 14716003 ) RO#: 10233 <br /> Stockton , CA 95206 SWRCB-CUF#: 012186 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed <br /> Cone Penetration Testing Site Investigation — June 2006 (Report) as uploaded to <br /> Geotracker and has the following comments . <br /> In correspondence dated January 23, 2006 , the EHD expressed concerns about <br /> your written proposal to place additional continuous , multi-chambered , extruded <br /> tubing (CMT) monitoring wells and to conduct ground water extraction (GWE) <br /> prior to completion of the lateral and vertical delineation of the dissolved <br /> petroleum ground water plume; therefore the proposals were not approved . <br /> Borings "CPT-07" and "CPT-08” were installed during June 2006 to address the <br /> dissolved plume delineation concerns. <br /> Based on the reported results of the investigation and previously acquired site <br /> data , the EHD still has a number of concerns with the site as noted below : <br /> L A lack of vertical ground water plume delineation near MW4 and MW-5 ; <br /> 2. The lack of lateral ground water plume delineation in all five hydrological <br /> units (HU ), particularly toward the north and the east and toward the <br /> residential areas ; <br /> 3 . A lack of monitoring wells with screened intervals between 40 feet below <br /> ground surface ( ' bgs) and 100' bgs; <br /> 4. The potential for vapor intrusion to the nearby residences located around <br /> the site has not been evaluated. Some of these houses appear to have <br /> either half or full basements and are very close to monitoring wells with <br /> elevated levels of dissolved petroleum in the ground water; <br /> 5 . The lack of sorbed and dissolved contaminant mass estimates for the site , <br /> and <br /> 6 . The apparent instability of the dissolved plume . <br /> i <br />