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Jerry Moore <br /> Page 2 <br /> 4. A groundwater extraction plan :designed at this time may <br /> not be adequate to treat the entire plume of groundwater <br /> contamination since the plume has not been physically <br /> defined. In addition, monitoringwell #lA may not be <br /> adequate for an extraction well since it is a two (2) <br /> inch well and was not designed as an extraction well. <br /> Air stripping of the extract6d water will require a <br /> permit from APCD. Disposal ofi� the extracted water into <br /> the public sewer will require "a permit from the City of <br /> Manteca. <br /> 5. Pursuant to Section 2652 (d) of the Underground Storage <br /> Tank Regulations (California Administrative Cade, Title <br /> 23 , Subchapter 16) a quarterly monitoring report shall be <br /> submitted to Public Health Services, Environmental Health <br /> Division and Central Valley'l Regional Water Quality <br /> Control Board (CVRWQCB) _ unti4l the investigation and <br /> cleanup of the site is deemed adequate. The report is to <br /> show the: <br /> -status of investigation and cleanup activities <br /> including the results of�: all investigations <br /> completed to date; <br /> -proposed continuing or next phase of investigation; <br /> -method of cleanup proposed or implemented, <br /> schedules for the completion of the investigation <br /> of the site and remediation; <br /> -monitoring well data including groundwater <br /> elevation, pH, conductivity, gradient; <br /> -analytical results of groundwater or soil sampling; <br /> and <br /> -a site map showing the "zero line" of <br /> contamination, if known,. and changes in the above <br /> measurements over the last quarter. <br /> When investigation schedules and report preparations <br /> overlap, the quarterly monitoring data may be submitted <br /> as a letter to the regulating agencies. <br /> I <br /> 1 <br />{4 <br /> I, <br /> I <br /> 1 ; <br /> mow.�_ _ �......�.r• .. .-.� ..�_ .. .+^.s..-.... � <br /> Apri-L 15, 1991, for"-the period of 'January, 1991 through <br /> March, 1991. <br /> 6. Before any remedial/corrective activities commence, a <br /> draft interim remedial/corrective action plan must be <br /> submitted to this office andCVRWQCB. Pursuant to <br /> Section 280. 67, Subpart F of 40CFR of the Federal <br /> Register, San Joaquin County Public Health Services, ` <br /> f <br /> Environmental Health Division (PHS/EHD) will conduct a { <br /> public notice to consider comments on the proposed plan <br /> before it is approved. <br /> E <br /> 7. After the lateral and vertical extent of soil and <br /> groundwater contamination have been physically confirmed, <br /> IM <br /> an addendum to the PAR is to be submitted and a final <br /> remedial/corrective action plan. is to be prepared. <br /> If you have any questions, contact Margaret Lagorio, Senior REHS, <br /> at (209) 468-3450. <br /> Jogi Khanna, M.D. , M.P.H. F <br /> Health O cer <br /> �A��otu a, REHS, Program Manager <br /> ironmental Health Division <br /> LAC/ML:nr <br /> i <br /> c: CVRWQCB - Jim Maughan <br /> c: Nations Groundwater Association <br /> 3050 Fite Circle, Ste. 101 i <br /> Sacramento, CA 95827 <br /> .i <br /> i <br /> i <br /> M <br /> , <br />