Laserfiche WebLink
- 7 - <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon, California 95320-1927 <br /> Telephone (209)838-9888 <br /> Facsimile (209)838-9883 <br /> April 17, 2003 <br /> Mr Martin Harris <br /> Tuff Boy Trailers <br /> 5151 Almondwood Drive <br /> Manteca, CA 95337 <br /> Subject First Quarter 2003 Groundwater Monitoring Report <br /> Tuff Boy Trailers, 5151 Almondwood Drive, Manteca, CA, Site Code 1424 <br /> Dear Mr Hams <br /> iThis letter report presents the results of first quarter 2003 groundwater monitoring and sampling <br /> activities at the subject site(Figure 1) <br /> Background <br /> The site previously utilized one 1,100-gallon UST for storage of unleaded gasoline (Figure 2) <br /> The UST was removed under permit from San Joaquin County Environmental Health Department <br /> (EHD) in February 1999 Soil samples collected beneath the tank contained ethylbenzene and <br /> total xylenes at levels exceeding the respective laboratory detection limits and additional work <br /> was required by EHD <br /> Three soil bonngs were drilled in December 1999 to investigate the extent of soil and <br /> groundwater contamination near the former UST Results of the investigation indicated that soil <br /> and groundwater had been impacted by an unauthorized release of gasoline from the former UST <br /> Four groundwater monitoring wells were installed in January 2001 to investigate the extent of <br /> groundwater contamination beneath the site Analytical results indicated that soil contamination <br /> attenuated rapidly with depth and did not appear to extend deeper than approximately 12-13 feet <br /> below surface grade (bsg) Very low levels of gasoline constituents were detected in groundwater <br /> beneath the site, although the extent of contamination appears to be limited to within approximately <br /> 60-80 feet of the former UST No wells could be installed upgradnent or within 15 feet of the former <br /> UST due to property boundaries and surface obstructions <br /> Ground Zero submitted a formal request for site closure in June 2002 after conducting quarterly <br /> groundwater monitoring and sampling for five consecutive quarters and concluding that the site is a <br /> 0 XGROUNDZE\TufMoy\ReportsNQtvM\IQM2003 doc <br />