ARCHIVED REPORTS XR0000154 - Laserfiche WebLink

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2.4 Borehole Abandonment Upon completion of soil sample collection activities, boreholes will be abandoned The augers will be removed and the open boreholes will be tremae grouted to grade with a 95% cement, 5% bentonite grout mixture The top of the borehole will be finished to match the surrounding surface cover 2.5 Disposal of Contaminated Materials Drill cuttings from the boreholes, will be stored in 55-gallon 17H drums located in the parking lot of the site Decontamination, development and purge liquids from the on site water well will be contained in 55-gallon drums, as they are produced, and stored on-site The disposable bailers and purge lines from water sampling will be placed in the drums with drilling cuttings and disposed of with the soil Soil samples not selected for analyses will be placed into the drums with the drill cuttings to await disposal Used sample sleeves will be disposed of with the drill cuttings After receipt of the analytical results all stockpiled cuttings and water will be properly disposed 2.6 Quality Assurance/Quality Control Investigative procedures will conform to IT Corporation QA/QC GUIDELINES. California Registered Geologist Dennis P. Dunn will have technical supervision of all work The drilling contractor will have a C-57 Water Well Driller Contractors License 2.7 Presentation of Results At the conclusion of the field work, IT will prepare a Site Investigation Report which will be a summary of all activities, procedures, findings, and interpretations on the site. The Site Investigation Report will include, at a minimum, the following Site History Location Map Site Plan Soil Boring Logs Signed Laboratory Reports Figures showing analytical results of the soil and groundwater samples Tables summarizing analytical data Findings Conclusions - Recommendations MZ'W21-93/ENG)93-0127 bk 6