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City of Stockton A68104.02B <br /> August 28, 1996 Page S <br /> .R�.GABILE 3 Jiry , f J ~ v r v ry ` n r}v {rte AriV <br /> n�� � .n r : `}����r� '+�;�; rr� .p�e ���� �esi�r�#� N� •}' Y,r{r :�=�:�A <br /> ^�,�' I[��, �t � ♦ s ' v ry �'+r i.r <br /> .�7` onit iiiiel `=� <br /> Sampling Date A T E X 'MH-G <br /> kg/L uglL Fg/L ug/L ugll- <br /> 1 06/30/95 ND ND ND ND ND <br /> 09/26/95 ND ND ND ND ND <br />' DLR OS OS OS OS s0 <br /> ug/L = micrograms per liter <br /> BTEX = benzene,toluene,ethylbenzene,xylenes <br /> TPH-G = total petroleum hydrocarbons-gasoline range <br /> ND = Not detected at or above detection limit For reporting purposes <br /> DLR = Detection limits for reporting purposes <br /> In a letter dated December 5, 1995, the San Joaquin County Public Health Services <br /> (SJCPHS) requested a work plan to destroy the monitoring well be submitted to their office. <br /> The City of Stockton commmssioned Twining to comply with the SJCPHS request on <br /> February 15, 1996 The well destruction work plan (A68104 02A) was prepared and <br /> submitted by Twuung on June 6, 1996 (Twining, 1996) The work plan was accepted by the <br /> SJCPHS and a permit to destroy the well was issued on July 12, 1996. <br /> The work plan contained a section which provided an estimate of the mass and volume of <br /> PPCs remaining in the soil at the site. The soil with concentrations of PPCs remaining was <br /> assumed to be adjacent to the perimeter of the excavation shown on Drawing 3. These <br />' estimates are summarized in Table 4 (Twining, 1996) <br />