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• 2.0 Summary of Known or Potential Waste Streams and Proposed Management. <br />Prior investigations or visual observations near or in the gravel lease area revealed the <br />presence of hydrocarbon constituents (benzene) in groundwater in the area of Oxidation <br />Ponds 1-3; free product (degraded distillate) on the water table in the vicinity of WP-3; <br />stained soils in Oxidation Pond No 1 and the adjacent ditch to the north; a possible <br />asbestos landfill near the northernmost corner of the gravel lease area that also shows <br />evidence of disposal (landfiiling) of solid waste. Figure 1 shows the locations of these <br />areas. Previous sampling locations and analytical laboratory results in the proposed <br />gravel mining area are presented in the SCP. <br />in addition, the results of the SCP for Subarea 3 revealed the presence of free product in <br />MW-2 and high TPH concentrations in the overburden soil north of Evaporation Pond <br />No. 9. These results are presented in the "Soil Characterization Data for Evaporation <br />Pond No. 9" (October 29, 2001) and associated analytical reports. A separate plan for the <br />installation of one additional well to monitor product down gradient of iV1W-2 and for the <br />management and disposal of these hydrocarbon-impacted soils during mining is detailed <br />in Appendix A. <br />Table 1 below summarizes waste streams and appropriate management strategies. <br />• 3.0 Field Inspection, Reporting and Training Requirements. <br />MEI (or other qualified environmental personnel and mining operators) will conduct field <br />inspections of the area during mining operations. The inspection and monitoring <br />requirements are summarized in Table 2, along with various trigger criteria and response <br />actions. The primary purpose of these inspections will be to identify signs of <br />environmental contamination and potential waste streams, and to monitor fluid levels <br />during dewatering activities for the potential movement of free product into the gravel pit <br />or sedimentation basin. <br />3.1 Field Inspections. <br />MEI will conduct and document weekly field inspections of the mining excavation and <br />sedimentation basin to look for any signs of contamination. A field inspection log will be <br />completed for each site visit and a sample form is included as Appendix B. Signs of <br />contamination include evidence of historic landfill activities (disturbed soils or visible <br />solid wastes}, stained soil or soil with hydrocarbon odor or other unusual odor, and water <br />with free product, hydrocarbon or other unusual odor, oily sheen or unusual <br />discoloration. <br />In the event any free product or product sheen is noted on any exposed groundwater in <br />the mining pit, in the sedimentation basin, or in the soils exposed by the excavation, <br />. mining operations will cease immediately, and FMM will report orally within 24 hours to <br />