COMPLIANCE INFO_1997-1998 - Laserfiche WebLink

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City of Stockton Draft Amended Report of Waste Discharge(AROWD) Austin Road Landfill Work Plan A centrally located decontamination station will be established for steam cleaning of drilling equipment. This decontamination system will include a pad on which the drill rig and other large drilling equipment,such as auger flights,can be steam cleaned. The drilling rig and other drilling equipment will be steam cleaned between each hole. The pad will be constructed so that it drains into a sump. Steam cleaning water collected in the sump will be collected by a vacuum truck contractor and disposed of at the ARL Groundwater Treatment Facility. All equipment decontamination episodes will be recorded in the field logbook. The general decontamination procedures are as follows: ■ A sufficient supply of tap water will be obtained from the Austin Road Landfill water supply system. ■ Augers,well casing,and well screen will be steam cleaned to remove all visible dirt. ■ Copious amounts of water with a phosphate-free detergent will be used to wash and brush all dirt from the sampling item,including the steam cleaned items. ■ Sampling items will be rinsed thoroughly with tap water,checked for any residual dirt,and rewashed if necessary. ■ The item will be rinsed with solvent to remove residual organics. ■ The item will be rinsed twice with tap water. ■ The item will then be rinsed with deionized water(ASTM Type II). ■ The item will be completely air dried prior to use. Items will be covered if not used immediately. Large items will be placed on a clean sheet of plastic. ■ Items not used immediately will be either wrapped in aluminum foil(small items)or in sheet plastic (large items)to prevent cross-contamination. 2.2.3 Sample Documentation The on-site geologist will maintain a field logbook documenting the following: day,date,time entered site,temperature,weather conditions,names,and titles of personnel present;names and titles of any visitors on site;arrival time of driller and other subcontractors,feet drilled,materials used,reference to boring logs,decontamination iterations;any potential problem areas or incidents and how those may impact the project;and any telephone calls made and how they may have affected the decision-making process. A detailed base map will be used in the field during drilling and sampling operations. 2.2.4 Sample Custody Sample custody will include the classification,packaging,transportation,identification,labeling, and handling of all samples collected in the field. W:\REPORTS\STOCKTON\AUSTIN\WORKPLAN.DOC Page 10