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PUBLIC ?1EALTH SERVICES <br /> SAN JOAQUIN COUNTY , <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> RUSSELL W JUNCAL C 0 <br /> MILL CREEK ASSOCIATES <br /> P O BOX 130jj <br /> MILFORD CA 96121 <br /> RE : Saddle/Flag City SITE CODE: 1706 <br /> 6421 W. Paddock P1 . <br /> Lodi, CA 95242-9500 <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS-EHD) has reviewed the recently received Executive <br /> Summary and Over-Excavation Workplan and has the following <br /> comments . <br /> Stockpiled soil collected during this proposed over-excavation <br /> needs to be sampled under PHS-EHD witness only if the soil is <br /> expected to be returned to the area it came from. If off-site <br /> disposal is anticipated, the requirements of the receiving <br /> facility need to be adhered to and PHS-EHD does not need to be <br /> present for the sampling event . <br /> In preparation for soil to be returned to the excavation from <br /> which it came, Tri-Regional Board Staff Recommendations must be <br /> maintained and one discrete sample for each 25 cubic feet of <br /> stockpiled soil must be taken. PHS-EHD will need to witness this <br /> sample collection. <br /> Detection limits for soil samples shall be the following; <br /> -TPH-G by EPA Method 8015 modified with GC/FID 5030 <br /> preparation, 1. 0 mg/kg (ppm) or 1000 . 0 ug/kg (ppb) . <br /> -TPH-D by EPA Method 8015 modified with GC/FID 3550 <br /> preparation, 1.0 mg/kg (ppm) or 1000 . 0 ug/kg (ppb) . <br /> -BTEX by EPA Method GC/PID 8020, 0 . 005 mg/kg (ppm) or <br /> 5 . 0 ug/kg (ppb) . <br /> Soil samples that exceed these levels and are returned to the <br /> excavation shall be remediated under an approved remediation plan <br /> due as soon as remodeling activities are completed. <br /> The detection limits proposed for the water samples are <br /> acceptable . For clarification, TPH-D analysis by Method GC/FID <br /> 3510 shall be used. <br /> A Di.i+iun ulSMI Joaquin (lu do Health ('arc Services <br />