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Ms Carol Oz Project 880-040 1A <br /> December 5, 2000 <br /> Page 6 of 6 <br /> vertical migration in response to groundwater production Utility conduits are most likely <br /> located above the groundwater surface and would not influence groundwater migration <br /> RECOMMENDATIONS <br /> On behalf of Parkinson's Hammer I-5 Arco, IT recommends conducting three additional <br /> monitoring events to assess hydraulic gradient and water quality The locations of wells MW-3 <br /> and MW-7 at the neighboring 76 Station provide downgradient monitoring locations for the <br /> subject site Future monitoring events should be conducted jointly with the neighboring <br /> 76 Station to provide a more regional groundwater representation <br /> If there are any questions regarding the contents of this report, please call us at (916) 928-3300 <br /> Sincerely, <br /> IT CORPORATION <br /> 'Kathleen A Waldo Mark Capps AP <br /> Staff Engineer Project Geologist, RG 6561 <br /> Attachments Figure 1 — Site Location Map <br /> Figure 2 — Site Map <br /> Figure 3 —Geoprobe Boring Locations <br /> Figure 4—Utility Map <br /> Figure 5 — Groundwater Elevation Contour Map <br /> Figure 6 — Soil Analytical Results <br /> Figure 7 —Groundwater Analytical Results <br /> Table I —Geoprobe Soil Sampling Analytical Data <br /> Table 2—Geoprobe Groundwater Sampling Analytical Data <br /> Table 3 —Well Installation Soil Sampling Analytical Data <br /> Table 4 —Monitoring Well Groundwater Data <br /> Attachment A—Field and Laboratory Procedures <br /> Attachment B —Boring Logs <br /> Attachment C —Surveyor's Report <br /> Attachment D—Field Sheets, Laboratory Reports and Chain of Custody <br /> Documentation <br /> cc Mr Jim Parkinson, 3250 West Hammer Lane, Stockton, California <br /> SnCDP-IISACRFPIICOMMOMC,,,,.ItmgWd iaL5hare"rojecisLntAc6480-0401A�dac IT CORPORATION <br />