Laserfiche WebLink
7 <br /> Page 1 of 1 <br /> Vicki McCartney [EH] <br /> From: Steve Carter[scarter@stratusinc.net] <br /> Sent: Tuesday, March 12, 2013 3:34 PM <br /> To: Vicki McCartney [EH] <br /> Subject: Parkinson's Hammer 1-5 Arco, 3250 W. Hammer Lane, Stockton, Case#2224 <br /> Vicki—I won't be able to complete a Tier 2 risk evaluation of analytical results from <br /> overexcavation confirmation samples (collected January 26, 2000)that exceed Region 2 ESLs <br /> before your meeting with Jim Barton tomorrow. I will forward it to you as quickly as I can. <br /> I did review the historical soil analytical.data relative to the Commercial/Industrial and Utility <br /> Worker values in Table 1 of the Low Threat Closure.Policy(LTCP). Except for one soil sample <br /> collected from well boring MW-3 at 10 feet bgs (September 6, 2000), all soil-analytical data <br /> from 10 feet bgs or less were collected in the original dispenser and product line samples <br /> (January 7, 2000), or during overexcavation of this area(January 26, 2000). Only one of these <br /> samples (D-1@10' C) had a reported benzene concentration (8.47 mg/Kg) above the lowest <br /> limit set in Table 1 (8.2 mg/Kg). None of the reported ethylbenzene concentrations in these <br /> samples exceeded the lowest limit set in Table 1(89 mg/Kg). <br /> These soil samples were collected over 13 years ago, and,it is likely that residual hydrocarbon <br /> concentrations now present at the site are lower than those reported in 2000. Relative to the <br /> limits in Table 1, the threat associated with residual hydrocarbons in the"shallow soil at the site <br /> appears low. <br /> Stephen L Carter, P.G. <br /> Stratus Environmental,Inc. <br /> (530) 676-6008 direct, <br /> (916) 813-3778 mobile - <br /> scarter@stratusinc.net <br /> ` Please consider the environment before printing this email <br /> i <br /> I <br /> i <br /> 3/13/2013 <br />