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Page 1 of 1 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Wednesday, July 16, 2008 11:44 AM <br /> To: 'William Little' <br /> Cc: 'Jim Barton'; Nuel Henderson [EH] <br /> Subject: RE: Ripon Farm Service-.UST <br /> Bill: <br /> This morning I discussed the Ripon Farm Service ESL results, submitted in the email below, with Jim <br /> Barton. Although the conformation soil samples collected between fivesand fifteen feet below surface grade <br /> (bsg)were non-detect for contaminants of concern, TPH-diesel was detected in confirmation samples CB1-20, <br /> CB2-20, CB3-20, and CB5-20 at concentrations above the ESI_concentration of 83 mg/kg for TPH middle <br /> distillates" Considering these results, Jim Barton believes it best to collect soil vapor samples prior to site closure <br /> consideration. <br /> Also, TPH-diesel was detected at 2600 ug/L in groundwater samples collected from MW-2 during the May 2008 <br /> sampling event; so Bill, please direct the field technician to include the analysis for TPH-d when sampling MW-2 <br /> during the third quarter 2008 sampling event. Thank you. " <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton,California 95202 <br /> Phone: (209)468-9852 <br /> Fax: (209)468-3433 <br /> s <br /> Email: vmccartney_ra)sjcehd.coni <br /> From: William Little [mailto:wlittle@advgeoenv.com] <br /> Sent: Friday, July 11, 2008 4:25 PM <br /> To: Vicki McCartney [EH] III <br /> Subject: Ripon Farm Service - UST <br /> Ms. Vicki McCartney, attached is the ESL results of the most impacted soil post remediation. The <br /> shallow soil from five and ten feet bsg were non-detect (for all constituents) and therefore at not <br /> useful for an ESL survey and generally preclude the requirement for soil vapor samples. AGE <br /> has received you letter regarding the residual soil impact a`nd potential risk to shallow ground <br /> water. Shallow ground water has demonstrated relatively minor detections of TPH-d since the <br /> remediation. However, AGE will.prepare a model for this site characteristic within a closure <br /> summary report. <br /> r <br /> I Thank you for the correspondence. <br /> William Little ` <br /> Geologist ; <br /> l <br /> 4 - <br /> i <br /> 7/16/2008 <br />