Laserfiche WebLink
DAMES &_ MOORE A PROFESSIONAL LIMITED PARTNERSHIP <br /> Bennett Properties <br /> January 27, 1988 <br /> Page Three <br /> DISCUSSION AND CONCLUSIONS <br /> Eased on these test results, it appears that contamination by hydrocarbons <br /> does exist at one or both of the sample locations analyzed. Based on our field <br /> observations to date, we believe that this contamination is minor, and may be <br /> due to localized on-site sources such as materials dumped at the site, opera- <br /> tion of the auto repair shop, leakage from containers, or spillage from trucks_ <br /> Generally, regulatory agencies require mitigation or cleanup measures for <br /> soil containg hydrocarbons at concentrations of 1000 ppe or greater, and <br /> sometimes at concentrations as low as 100 ppm. <br /> We recommend that soils and concrete in areas of visible contamination be <br /> removed during grading. The materials removed should be tested to determine <br /> whether they should be disposed of as hazardous materials, or whether alternate <br /> remedial action, such as aeration and biodegradation, can be undertaken. We <br /> also recommend that the test results presented herein and a recommended action <br /> program be promptly discuszed with the California Department of Health Services <br /> and the San Joaquin County Department of Environmental Health, so that plans <br /> for removal of contaminated materials from the site can be approved in advance <br /> by these agencies. <br /> Please feel free to call if you have any questions regarding the contents <br /> of this report. <br /> Very truly yours, <br /> DAMES S MWRE <br /> 7 <br /> Willem C.B. Villet <br /> Partner (Ltd. ) <br /> //; <br /> Phillip N. Mabry <br /> Project Engineer <br /> IKMV:PNP!:AH:akc <br /> Tour copies submitted <br /> Attachments: Plate 1 - Site Plan <br /> Enseco California Analytical Laboratory Report <br /> Chain of Custody Record <br />