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Former Heinz USA 26 January 2010 <br /> 757 W. Eleventh St. Page 2 of 2 <br /> EHD staff have reviewed 2009 Annual Ground Water Monitoring Results, dated 18 <br /> January 2010, prepared by ERM and have the following comments: <br /> 1. Ground water samples collected 5 November 2009 from Site1 and Site2 <br /> locations remain impacted by elevated concentrations of TPH-g and BTEX. <br /> 2. Ground water sample results from .MW4 at Site1 were: TPH-g 20,000 <br /> micrograms per liter (ug/L), toluene 135 ug/L, ethylbenzene 1,030 ug/I, and total <br /> xylene 2,160 ug/L. <br /> 3. Ground water sample results from MW6 at Site2 were: TPH-g 3,290 ug/L, <br /> benzene 93 ug/L, toluene 13.8 ug/L, ethylbenzene 66.4 ug/L, and total xylene <br /> 74.9 ug/L. <br /> 4. Ground water contaminant concentrations are too high to be acceptable for site <br /> closure. Implementation of a remedial technology for ground water cleanup is <br /> warranted at your site. <br /> 5. The potential for residual petroleum hydrocarbon in soil and ground water to <br /> migrate into nearby buildings and/or other receptors must be evaluated and <br /> reported to the EHD. <br /> Please submit a corrective action feasibility study work plan and a vapor intrusion <br /> evaluation work plan to EHD by 30 March 2010. <br /> If you have any further questions regarding this matter, please contact Harlin Knoll at <br /> (209) 468-3442. <br /> /C-��q <br /> Harlin Knoll, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> C: CVRWQCB - Jim Barton <br /> SWRCB - Cleanup Fund <br /> ERM-Brian Bjorklund <br /> ; <br /> 1 <br />