Laserfiche WebLink
Page 1 of 3 <br /> Vicki McCartne EH <br /> Y [ ] <br /> From: Kathleen Waldo [kwaldo@closuresolutians.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 /> i <br /> ' I <br /> Unfortunately no table of historical soil'sample results was available, therefore as stated in the Supplemental <br /> Calculations for Closure Review, we obtained soil data from historical Site.investigation summaries. The if <br /> summaries available indicate that soil samples T.D-2 and TD-3 were non-detect for.TPHd. The March 2005'pffL <br /> Site Monitoring Well Report by SECOR and many other documents state "Laboratory analysis of soil samples 7D- <br /> 2 and TD-3 detected maximum concentrations of TPHg at 2,100 ppm (TD-2), toluene at 3.5 ppm (TD-3), <br /> eth lbenzene at 18 <br /> y ppm (TD-3), and fatal xylenes at 110 ppm (TD-3). TPHd oil range total petroleum <br /> hydrocarbons (TPH-O), and benzene were not detected above laboratory detection limits". Therefore, only the <br /> data 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 on the <br /> available information, we assumed that sample 3E (MTBE at 80 mg/kg) was collected from the base of the UST <br /> excavation which is currently submerged and therefore the concentration was not used in the soil calculation. <br /> -If you have additional data that contradicts our information/assumptions or if you feel the interpretation:was <br /> incorrect, please let us know and we will evaluate the new data and modify the estimates as appropriate. <br /> Thanks, <br /> Kate <br /> Kathleen Waldo <br /> Senior.Pro.ject Engineer <br /> Closure Solutions. Inc. <br /> 4600 Northgate Boulevard, Suite 230 <br /> Sacramento, California 95834 <br /> Direct: (916) 760-7075 <br /> i <br /> Cell: (916)213-2058 <br /> Fax: (925) 459-5602 <br /> From: Vicki McCartney [EH] [mailto:vmccartney@sjcehd.com] <br /> Sent: Tuesday, September 06, 20114:31 PM . <br /> To: Kathleen Waldo <br /> CC: Jim Barton <br /> Subject: RE: 3202 West Hammer Lane <br /> Kathleen, <br /> Thank you for submitting Supplemental Calculations for Closure Review_ <br /> I do have a couple questions concerning the data used for the calculations. <br /> Why was the soil analytical result of 1 mg/kg for°TPH'as diesel [reported for soil sample THP1 S-10 (also named <br /> 9/7/2011 '` <br />