Laserfiche WebLink
F <br /> ESAEnvironmental <br /> socr+ce <br /> i Associates <br /> March 26, 2001 <br /> Ms Dot Lofstrom, R G <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street <br /> Stockton, California 95202 <br /> Subject: Additional Groundwater Assessment for MTBE <br /> Former Underground Storage Tank Site <br /> University of the Pacific (UOP) Physical Plant <br /> 1081 W Mendocino Avenue, Stockton,California <br /> Dear Ms Lofstrom <br /> ESA has prepared the attached Additional Groundwater Assessment Report to present the findings of our <br /> recent (January 2001) groundwater assessment at the site referenced above The attached report also <br /> summarizes the findings from the UST removal and presents findings of our July 2000 soil and groundwater <br /> assessment These assessments were intended to further delineate concentrations of methyl tertiary-butyl <br /> rcer(MTBE) in the soil and groundwater MTBE was first detected at the bottom of the former UST <br /> avation following the removal of a 4,000-gasoline tank in April 2000 Concentrations of petroleum <br /> hydrocarbons (gasoline) were either not detected or at very low concentrations <br /> 1 Based on the findings of our two assessments, we have concluded that the occurrence of MTBE in the soils <br /> and shallow groundwater is localized and it has not migrated laterally or vertically beyond the vicinity of the <br /> former UST It is ESA's opinion that the residual concentrations of MTBE do not pose a significant threat to <br /> human health or the environment and no further assessment or remediation is warranted <br /> We have appreciated your assistance and the help we have received from your department throughout the <br /> course of this project If you require additional information or have questions, please call Ms Jennifer <br /> } Schulte or me at(415) 896 5900 <br /> Sincerely <br /> 91 <br /> Peter Hu son, G <br /> cc Joe Kinm, Director, Physical Plant, University of the Pacific <br /> John Forsythe, ESA Sacramento <br /> Crystal Stech, ESA Sacramento <br /> 225 Bush Street,Suite 1700 San Francisco California 94104 (415)896-5900 fax 896-0332 email esa sf@esassoc com <br />