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❑C❑ <br /> GROUNDWATER pr <br /> '`v '' Hr <br /> pL..I� YI I i sLl V i v�J <br /> IEEE] TECHNOLOGY, INC. 1401 halyard Dnve,Suite 140,West Sacramento,CA 95691(916)3721700 <br /> FAX(916)372-8781 <br /> May 18, 1992 Project No 02320 2124 <br /> Mr Kenneth Olds <br /> Lammersville School District <br /> 16555 West Von Sosten Road <br /> Tracy, CA 95376 <br /> RE SECOND QUARTER STATUS REPORT FOR 1992 <br /> LAMMERSVILLE SCHOOL DISTRICT <br /> 16555 WEST VON SOSTEN ROAD <br /> TRACY, CALIFORNIA <br /> Dear Mr Olds <br /> This letter is presented by Groundwater Technology, Inc to summarize results of groundwater <br /> monitoring at the Lammersville School in Tracy, California (Figure 1) for the quarter ending May <br /> 1992 Groundwater monitoring and sampling was conducted in accordance with the November <br /> 15, 1991 agreement with the Lammersville School District The purpose of the field work was <br /> to determine water table elevation and the distribution of dissolved hydrocarbons in selected <br /> groundwater monitoring wells (MW's) related to the site Groundwater monitoring data and <br /> results of laboratory analyses of groundwater samples collected on April 7, 1992 are included <br /> At the request of the San Joaquin County Environmental Health Division, we have included the <br /> chain of custody manifests from the previous sampling event <br /> WORK PERFORMED <br /> GROUNDWATER MONITORING <br /> On April 7, 1992, all site related groundwater monitoring wells were gauged to determine depth <br /> to water (DTW) and to check for the presence of separate-phase hydrocarbons: The water table <br /> elevations in the wells have increased an average of 0 23 foot from levels reported the previous <br /> quarter Groundwater monitoring data are summarized in Table 1 A potentiometric surface map <br /> constructed from data collected on April 7, 1992 (Figure 2) indicates that the groundwater beneath <br /> the site flows to the north at a gradient of approximately 0 009 <br /> Offices throughout the U S,Canada and Overseas <br />