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ENVIRONMENTAL HEALTI&EPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Q - ?a Donna K.Heran,R.E.H.S. Unit Supervisors <br /> N :< 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> Director Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> cgC�FOR��c Program Manager Man Fax: ( <br /> Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> Laurie A.Co R.E.H.S. 209) 464-0138 Robert McClellon,R.E.H.S. <br /> Program Manager Mark Bareellos,R.E.H.S. <br /> GIRISH PATEL [JUN 14 2005 <br /> 5708 N HWY 99 FRONTAGE RD <br /> STOCKTON CA 95212 <br /> RE: St. Francis Motel (UIC septic) CO#:000020675 <br /> 5708 N. Hwy 99 Frontage Rd PR#:0522753 <br /> Stockton, CA. 95212 RO#:1570 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed Limited Site <br /> Assessment Work plan for Septic System Investigation in Support of Underground Injection <br /> Control(UIC) Site dated May 10, 2005 as submitted by your consultant, Stephen G. Muir(SGM) <br /> on May 27, 2005 and has the following comments. <br /> This submittal/work plan is required by UIC investigations to verify if the chemicals detected in the <br /> septic tank from an illegal clandestine laboratory(Room 108) have impacted the soil as a result of <br /> the migration of waste water thru the septic disposal lines and seepage pits. <br /> Five (5) GeoProbe/hand auger soil borings ("SB-1" thru "SB-5") are shown on Figure 6 and are <br /> proposed to have soil samples taken from not greater than 24-inches below the tank and lines. <br /> The narrative portion proposed 5-8 soil borings, and no soil borings were shown under the <br /> seepage pit or the distribution box (D-box). Five to seven soil samples are to be analyzed by <br /> EPA Methods 8260B, 300.0, 345.1, SM4500-1 B, and 8015m. A report of findings, Limited Scope <br /> Site Assessment Report(SAR) will be submitted to EHD upon completion of the work. <br /> The focus of this subsurface investigation is centered on one of the three disposal systems <br /> associated with this facility. This septic tank, "1996- 2000 gallon", is the system that received <br /> liquid waste from Room 108 as well as at least two other rooms, as depicted on the figures <br /> included in the work plan. Based on research conducted by SGM and depicted on the map in the <br /> work plan, it appears approximately 60-feet of buried leach line exits from the D-box of this septic <br /> tank to the north and travels westerly while approximately 120-feet of buried "hard line" (non- <br /> perforated) piping exits the same D-box from this septic tank to the south and travels to "60" <br /> Diameter Pit 25'Deep 07/1993"located just south of the motel addition noted on the map. Other <br /> "Abd Pits"are shown on Figure 4 and 6, but are not identified and are not included in the soil <br /> sample collection proposal. <br /> EHD appreciates the research and diligence your consultant exercised in formulating a plan for <br /> this site where so much is unknown. EHD has also reviewed septic permits/documents for this <br /> site from 1953, 1974, 1993 and 1996 and has concluded that the location and construction details <br /> included in these documents are not correct or complete (some of the 120-'hardline' is shown on <br /> a permit as leach line). Rather than boring into a poorly documented disposal system, EHD <br /> recommends that exploratory digging be conducted to verify actual conditions, i.e.: effluent lines <br /> from the septic tank, number of D-boxes, and whether leach lines or'hard lines' are present. <br /> Included also in the work plan was a proposal to continue annual sampling of the water supply <br /> well onsite for Volatile Organic Compounds (VOC) by EPA Method 524.2 and Chlorides by EPA <br /> Method 300.0 and to conduct a sensitive receptor survey within 250-foot radius of the site. <br />