Laserfiche WebLink
ENVIRONMENTAL HEALTH DEPART'MEN'T <br /> SAN�a JOA UIN COUNTY� Unit Supervisors <br /> x Donna K Heran,R E H S <br /> < 304 East Weber Avenue, Third Floor Carl Bargznao,R E H S <br /> Director Mike Huggins,R E H S,R D l <br /> Al Olsen,RE H S Stockton, California 95202-2708 Douglas W Wilson,R E H S <br /> c9�!r o a�'�p Pr ogram Manager Telephone (209) 468-3420 Margaret Lagorio,R E H 5 <br /> Laurie A Cotuila,RE H S Robert McClellan,R E H S <br /> Program Manager FaX (209} 464-0138 Mark Barcellos,R E H 5 <br /> ELROY COX / COX & COX MAR I n 900 <br /> PO BOX 1046 4 �4R 4 9 zao4 <br /> TRACY CA 95376 <br /> 1p,D <br /> RE Cox & Cox Bros w�� Site Code- 1933 <br /> 595 E 111h Street f RO#000213 <br /> Tracy, CA , 95736 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed <br /> Amendment to Approved Work Plan for Corrective Action dated March 2, 2004 <br /> as submitted by Wright Environmental Services (WES) and has the following <br /> comments <br /> Currently soil over-excavation activities at former MW-3 and MW-9 areas have <br /> revealed that severely Impacted soil is present beyond the initial estimates <br /> Included in the Corrective Action Plan dated March 27, 2003 that was approved <br /> by EHD on October 10, 2003 As a result, WES has provided this amendment <br /> for additional over-excavation to remove more contaminated soils <br /> This amendment calls for an additional 480 cubic yards to be removed <br /> Estimated additional costs were included and EHD was asked to approve the <br /> amendment <br /> EHD Is aware of the general subsurface conditions in the central Tracy area and <br /> has supported over-excavation as a cost-effective remedial action in the past <br /> Due to the shallow ground water and the significantly tight, non-permeable <br /> vadose soil conditions in the central Tracy area, EHD concluded with the WES <br /> feasibility study that over-excavation would be the most cost effective remedial <br /> alternative for this site Additional site-specific conditions also made this <br /> remedial alternative the most feasible <br /> Removal of a mayor area of the impacted soil at the site is considered to be the <br /> best and most cost-effective way of reducing the impact to the ground water from <br /> the large contaminated mass of soil <br /> EHD concurs with the amendment and approves the continued over-excavation <br />