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Nad NNW 12 January 2007 AGE-NC Project No. 96-0232 Page 2 of 7 AGE: 02 May 1997: AGE recommended in the quarterly report to filrther delineate the dissolved hydrocarbon plume with the collection of a minimum of four to five grab ground water samples. The samples should be collected to both delineate the hydrocarbon plume and provide information for the most effective placement of future ground water monitoring wells. Upon the request of the PHS-EHD, AGE will provide a site specific work plan addendum for the installation of additional wells. Based on the current data the most likely placement of additional wells are as follows: one well should be installed north of MW-3; a second well should be installed northeast of MW-4 along Wilma Avenue and the third well should be installed on the east side of the Highway 99 ramp. AGE: 18 August 1997: AGE recommended in the quarterly report to reduce the concentration of TPH-d in the ground water at the site, beginning an interim active remediation of the remaining petroleum hydrocarbon-impacted soil. Removal of TPH-d impacted soil would reduce the hydrocarbon mass remaining in contact with or near the ground water at the site. Soil accumulated from the installation of the monitoring well has been aerating. The soil should be sampled,analyzed and spread on the site if hydrocarbon concentrations have been sufficiently reduced. To further delineate the dissolved hydrocarbon plume, AGE recommends the collection of a minimum of four grab ground water samples. The samples should be collected to both delineate the hydrocarbon plume and provide information for the most effective placement of future ground water monitoring wells, if required. Upon the request of the PHS-EHD, AGE will provide a site specific work plan addendum for the installation of additional wells. AGE: 09 January 1998: AGE recommended in the quarterly report to reduce the concentration of TPH-d in the ground water at the site, beginning an interim active remediation of the remaining petroleum hydrocarbon-impacted soil. Removal of TPH-d impacted soil would reduce the hydrocarbon mass remaining in contact with or near the ground water at the site. Collection of a minimum of four grab ground water samples to further delineate the dissolved hydrocarbon plume, AGE recommends. The samples should be collected to both delineate the hydrocarbon plume and provide information for the most effective placement of future ground water monitoring wells, if required. Upon the request of the FHS-EHD, AGE will provide a site specific work plan addendum for the installation of additional wells. AGE: 14 April 1998:AGE recommended in the quarterly report collecting a minimum of four grab ground water samples to delineate the dissolved hydrocarbon plume and to determine the necessity for placement of additional ground water monitoring wells,if necessary.Upon the request of the PHS-EHD, AGE will provide a site specific work plan addendum for the collection of grab ground water samples. Additionally, AGE recommended to conduct a receptor survey to identify any city, domestic, irrigation or monitoring water wells located 'aAw Advanced GeoEnvironmcntal,Inc.