Laserfiche WebLink
I Page 2 of 4 <br /> F <br /> Fax: 925 459-5602 <br /> I <br /> From: Vicki McCartney [EH] [mailto:vmccartney@sjcehd.com] <br /> Sent: Wednesday, September 07, 20113:24-PM <br /> To: Kathleen Waldo <br /> Cc: Jim Barton;.:David Foley <br /> Subject: RE: 3202 West Hammer Lane <br /> Hi Kathleen, <br /> The laboratory analytical results for TPH as diesel (TPH-d)for soil samples TD-2, TD-3 and TPH15-10, <br /> and for MTBE by method 8260 from soil samples collected at 15 feet below surface grade during the UST <br /> i` removal are appended for you to review: Please recalculate the estimated residual mass of TPH-d and <br /> MTBE using the data provided in the attachment. Thank you. <br /> i 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 /> Email:- VIricc�artneyfik:�icclid,com <br /> From: Kathleen Waldo [mailto:kwaido@closuresolutions.com] <br /> Sent: Wednesday, September 07,' 2011'8:49 AM <br /> To: Vicki McCartney [EH], <br /> Cc: 'Jim Barton; 'David Foley' <br /> Subject: RE: 3202 West Hammer Lane <br /> Hi Vicki, <br /> Unfortunately no table of historical soil sample results was available, therefore as stated in the <br /> Supplemental Calculations for Closure Review,we obtained soil data from historical Site <br /> investigation summaries. The summaries available indicate that soil samples TD-2 and TD-3 were <br /> non-detect for TPHd. The March 2005 Off-:Site Monitoring Well.Report by SECOR and many other <br /> documents state "Laboratory analysis of soil samples TD-2 and TD-3 detected maximum <br /> concentrations of TPHg at 2,100 ppm (TD-2), toluene at 3.5 ppm (TD-3), ethylbenzene at 18 ppm <br /> (TD-3), and totalxylenesat 110 ppm (TFC-3). TPHd,'oil range total petroleum hydrocarbons(TPH- <br /> (), and benzene were not detected above laboratory detection limits'. Therefore, only the data <br /> from sample THPIS-10 was used in the calculation to estimate residual TPHd in soil. <br /> The investigation summaries available to us did'not report MTBE soil results for sample 1E. Based <br /> on the'available information, we assumed that.samP le 3E (MTBE at 80 mg/kg) was collected from <br /> the base of the UST excavation which is currently submerged and therefore the concentration was <br /> not used in the soil calculation.` <br /> If you have additional data that contradicts our information/assumptions or if you feel the <br /> interpretation was incorrect, please let us know and we will evaluate the new data and modify the <br /> 9/8/2011 <br />