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A _ <br /> CHRONOLOGY <br /> r; <br /> UNIVERSITY OF PACIFIC <br /> 1091 W. MENDOCINO, STOCKTON <br /> 04/07/00 4000 gallon unleaded gas underground storage tank (UST) removed <br /> under permit and inspection of Environmental Health (EHD). Two soil <br /> samples were collected beneath the UST. Analysis showed 6.6 ppm and <br /> 11 ppm of MTBE in the samples. <br />' 06/08/00 Date of work plan for further investigation. <br /> 06/16/00 Site placed in Local Oversight Program. <br /> s, <br /> 07/05/00 Five soil borings placed in and arojnd former UST location.. Soil and <br /> grab groundwater samples collected and analyzed. <br /> 08/25/00 Date of"Subsurface Soil and Groundwater Assessment Report" on 7/5/00 <br /> work. No MTBE found in soil samples analyzed. One grab water sample <br /> Had 1300 ppb MTBE and another had 1.4 ppb MTBE. The other three <br /> groundwater samples were non detect. A well survey was included in this <br /> report. <br /> ?C <br /> 4 09/15/00 EHD letter directing further investigation of the site. <br /> 11/28/00 Date of work plan that proposes more borings. <br /> 1/10-11/01 Fourteen additional soil borings placed. <br /> 03/26/01 Date of Additional Groundwater Assessment for MTBE". No <br /> contaminants were found in the soil or groundwater samples collected. <br /> f 04/25/01 EHD letter directing installation of 3 monitoring wells and four quarters of <br /> groundwater sampling and analysis. <br /> ii <br /> . 10/23/01 Monitoring well 4 installed. <br /> 11/16/01 Monitoring wells 1,2 and 3 installed and soil boring TP20 drilled. <br /> 12/02/03 Date of"Groundwater Monitoring and Assessment Report and Request <br /> for No Further Action". No contaminants found in the soil. Only MTBE <br /> found in one water sample. <br /> 08/12/04 EHD requested revised Groundwater Elevation Table and Groundwater <br /> Contour Maps. <br /> 08/30/04 Date of"Revised Groundwater Elevation Data and Contours". EHD <br /> I <br /> oncurs with no further action. <br /> 'i <br />