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1'rerislar.c. <br /> Response to Comments Table <br /> California Army National Guard <br /> Stockton, California <br /> (Page 1 of 7) <br /> Comment Comment from <br /> Number Central Valley Regional Water Quality Control Board Letter Response <br /> dated March 15, 1999 <br /> 1 Facility records should be located to determine the sanitary and Page 6, 4` bullet. <br /> storm sewer line layout for the AASF, CSMS and the OMS. The Formal interviews with on-site personnel <br /> revised Work Plan should include maps showing the layout of the regarding activities at the locations of sanitary <br /> sewer lines with laterals, sumps and any potential discharge points. sewer intake locations will be conducted. Soil <br /> The site investigation activities for the sewer lines should determine borings are proposed adjacent to washracks and <br /> potential discharge points and to evaluate if these discharge points clarifiers. If evidence of contamination is <br /> were used for disposal of contaminants or hazardous substances. If it identified in samples collected, further <br /> is determined that the sewer line was used for disposal of investigation will be evaluated (i.e. video <br /> contaminants or hazardous substances, a video survey of the sewer survey). At this time, site contacts have <br /> line should be performed as part of the site investigation to identify indicated that disposal of contaminants or <br /> any sewer line deficiencies (e.g. sags, breaks, cracks, root intrusion). hazardous waste via the sewer system at the <br /> After the video survey is performed, an additional (Sewer Line Site has not occurred. Figures 3 and 4 have <br /> Investigation) Work Plan should be submitted, for our review and been amended to include locations of sewer <br /> concurrence, to investigate the sewer line deficiencies. The Sewer lines and laterals to the best of our knowledge. <br /> Line Investigation Work Plan should include maps showing the Copies of plans for the Stockton facility are <br /> location of laterals, sumps (i.e. discharge points) and deficiencies. also included. <br /> Investigation activities should provide (boring) soil sampling <br /> locations near the sewer line breaks and potential discharge points. <br /> The approach for developing an appropriate number of sewer line <br /> sampling locations could be based on how severe the deficiency <br /> (sewer line breaks or cracks) is and could be based on the location <br /> 1527-99/3134-100/AUG 13'99 <br />