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,f <br /> William Little 'i F <br /> I From: Vicki McCartney [EH] [vmccartney@sjcehd.com] <br /> Sent; Wednesday, July 16, 2008 11:44 AM -i <br /> To: William Little <br /> Cc: Jim Barton; Nuel Henderson [EH] <br /> Subject: RE: Ripon Farm Service - UST <br /> yl <br /> Bill: <br /> �i <br /> 6 <br /> This morning I discussed the Ripon Farm Service ESL results, submitted in the email below, with Jim Barton. Although <br /> the conformation soil samples collected between five and fifteen feet below surface grade(bsg)were non-detect <br /> for contaminants of concern, TPH-diesel was detected in confirmation samples Cbl-20, CB2-20, CB3-20, and CB5-20 at <br /># concentrations above the ESL concentration of 83 mg/kg for TPH middle distillates. Considering these results, Jim Barton <br /> believes it best to colleci soil vapor samples prior to site closure consideration. <br /> Also, TPH-diesel was detected at 2600 ug/L in groundwater samples collected from MW-2 during the May 2008 sampling <br /> event; so Bill, please dlr�ct the field technician to include the analysis for TPH-d when sampling MW-2 during the third <br /> quarter 2008 sampling event. Thank you. <br /> r9 <br /> Vicki McCartney, Senior I LEHS R <br /> I San Joaquin County <br /> 1 Environmental Health Department <br /> 600 East Main Street <br /> Stockton,California 95201 <br /> Phone: (209)468-9852 <br /> i <br /> Fax: (209)468-3433 <br /> Email: virnccartney Bice d.com <br /> s <br /> From: William Little [mailto:wlittle@advgeoenv.com] <br /> Sent: Friday, Jy�ly 11, 2008 4:25 PM <br /> To: Vicki McCaVey [EH] <br /> Subject: Ripon Farm Service - UST <br /> 4 Ms.Vicki McCa tney,attached is the ESL results of the most impaAed soil post remediation.The shallow soil <br /> from five and ten feet bsg were non-detect(for all constituents) and therefore at not useful for an ESL survey <br /> and generally preclude the requirement for soil vapor samples.AGE has received you letter regarding the <br /> 1 residual soil imact and potential risk to shallow ground water. Shallow ground water has demonstrated <br /> i relatively mino�detections of TPH-d since the remediation. However,AGE will prepare a model for this site <br /> characteristic+ ithin a closure summary report. s <br /> Thank you for the correspondence. k <br /> a William Little <br /> Geologist <br /> i <br /> '.k <br /> 1 <br />