Laserfiche WebLink
Mr. Tom Newhall <br /> November 8, 2004 <br /> Page 2 <br /> additional soil needed to be removed to reach acceptable levels of copper and zinc in <br /> soil. Additional soil was removed from this area and confirmation soil samples were <br /> collected again from locations C1 through C6 on June 1, 2004. One confirmation <br /> sample, C5, contained copper at 133 mg/kg. Additional soil was removed from location <br /> C5 and a confirmation sample was collected. Copper concentrations in the final <br /> confirmation samples ranged from 28.8 mg/kg to 89.0 mg/kg. Zinc concentrations in the <br /> final confirmation samples ranged from 51 mg/kg to 97 mg/kg. Spent sandblast and <br /> associated soil that contained copper and/or zinc concentrations which exceeded TTLC <br /> or STLC were transported by Hazardous Waste Manifest for disposal. Soil removed <br /> from beneath the spent sandblast piles that contained copper and/or zinc at <br /> concentrations below the TTLC and STLC were transported by Non-Hazardous Waste <br /> Manifest for disposal. <br /> Our review indicates hazardous levels of copper and zinc have been removed from the <br /> sand blast area and that the copper and zinc concentrations remaining in site soils <br /> beneath the previous spent sandblast area do not appear to pose a health risk. No <br /> further clean-up actions are required for the spent sandblast area (identified as "Site <br /> Area of Concern" in Figure 2, enclosed). This decision is limited only to the sandblast <br /> area of the site. This decision may not be construed to represent a finding regarding <br /> the environmental condition of any other portion of the Tom Newhall Boat Repair <br /> property. <br /> If you have any questions, please contact Mr. Jerry Lile at (916) 255-3744 or by <br /> electronic mail at ilile(a)dtsc.ca.gov. <br /> Sincerely, <br /> es L. 'os Id, P.E., Chief <br /> Northern Ca ifornia-Central Cleanup Operations Branch <br /> Enclosure <br /> cc: Mr. Guy Roy, P.E. <br /> Environeering, Incorporated <br /> P.O. Box 2498 <br /> Danville, California 94526 <br />