SITE INFORMATION AND CORRESPONDENCE

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Sierra Motel — UIC Drug lab page 2 3416 Farmington Rd, Stockton. In addition to the analytes included in this AGE proposal, please include pH (EPA 9045C), and Total Phosphorus as P (EPA Method 365.2) as previously directed in SJCEHD correspondence dated October 22, 2004. A visual inspection of the septic tank is required by SJCEHD if you have plans to reuse the system. Please ensure that the compartments are empty and dry before you schedule this requirement with Mr. Infurna. A 48-working hours notice is required for this inspection request if not conducted at the time of the field inspection for the soil sampling. In addition to the broken hard line, if the visual inspection reveals that the tank and the septic pit construction are not in a condition that would allow proper system operation, the affected parts/area must be repaired or replaced before the system can be placed back in operation and the occupancy restrictions currently in place for these apartments can be removed. If soil/sludge/water sample laboratory data indicates that chemicals are detected at significant levels, an additional investigation may be required to determine the vertical extent of the chemical migration and if the ground water has been impacted. The report of findings for this initial investigative phase should provide recommendations if significant contamination is detected under the septic tank, `hard-line', or pit area. The septic system investigation, and remediation if needed, must be adequately conducted and completed (including report submittal at SJCEHD) prior to SJCEHD permitting the septic system to be placed back in operation. The work plan is approved with the inclusion of the above noted conditions. Please have your consultant submit a completed Well Permit Application and fee immediately. Please contact Michael Infurna at (209) 468-3454 to schedule your appointments or if you have any questions. Donna Heran, REHS, Director Environ ntal Health Department Michael Infurna, Senio EHS Margare Lagorio, REHS UIC-Site Mitigation Unit IV Supervisor MI/ c: AGE — Chris Miller, 837 Shaw Rd., Stockton. c: SJCEHD -- Unit V, Alan Bierdermann, Stockton.