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u � NOTIFICATIONS Upon approval of this workplan and obtaining of all necessary permits a 48-hour notice will be given to all concern parties and Underground Service Alert will be notified prior to commencing any probing or drilling activities. EXCAVATED WELL MATERIALS AND FLUIDS All materials excavated during the drilling/sampling and boring destruction will be placed in drums for profiling and later disposal at a Forward Landfill, 9999 South Austin Road, Manteca, California 95336. Forward requires a four point composite sample analyzed for TPHg, BTEX and total lead. All fluids generated by the drilling/sampling and boring destruction procedures will be placed into 55-gallon drums. The drums will be place in the remediation system compound for temporary storage to allow the solids to settle to the bottom of the drums. In two to three days the drums will be inspected and all clear fluids will be disposal to sewer. The solids will be removed from the drums and placed with the boring drilling and destruction soils/cutting for disposal to Forward Landfill. A sample of the drummed water will then be obtained to guarantee that disposal criteria have been met prior to discharge to the sewer. Once the drum(s) has been emptied they will be removed from the site. LIMITATIONS The information presented in this report is based on the following: 1. The observations and data collected by field personnel. 2. The result of laboratory analyzes performed by a state certified analytical laboratory. 3. Our understanding of the regulations of San Joaquin County, the City of Stockton and the State of California. 4. References reviewed for this report. Changes in groundwater conditions can occur due to variations in rainfall, temperature, local and regional water use and local construction practices. In addition, variations in the soil and groundwater conditions could exist beyond the points explored in this investigation. State Certified Laboratory analytical results are included in this report. This laboratory follows EPA and State of California approved procedures; however, WEGE is not responsible for errors in these laboratory results. The services performed by Western Geo-Engineers, a corporation under California Registered Geologist #3037 and/or Contractors License #513857, have been conducted in a manner consistent with the level of care and skill ordinarily exercised by members of our profession currently practicing under similar conditions in the State of California, the City of Stockton and San Joaquin County. 6 R-603 extent WP 2-2001