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AW
<br />Fernando's Place June 10, 2009
<br />1201 S. Center St. Page 2
<br />Stockton, CA 95206
<br />On May 19, 2009, the SWRCB passed resolution #2009-0042 which required the EHD tc
<br />reduce the sampling frequency for sites' wells to semi-annual. In order to comply with this
<br />resolution, the EHD modifies the sampling and laboratory analyses for this site as follows:
<br />1. Wells MW -6A, MW -76 through 7D, MW -8A through 8D, and MW9-A-D are to be
<br />sampled and analyzed annually for total petroleum hydrocarbons as gasoline (TPHg),
<br />benzene, toluene, ethylbenzene, xylene (BTEX), methyl tertiary -butyl ether (MtBE),
<br />tertiary amyl methyl ether (TAME), and 1,2-dichloroethane (DCA) starting in 2010.
<br />2. The remainder of the wells are to be sampled semi-annually and analyzed for the same
<br />Z constituents listed above. I•'
<br />In order to discuss the status of your site, the EHD requests your presence at a meeting to be
<br />held on July 14, 2009, at 10:00 a.m., at the EHD, 600 E. Main Street, Stockton, CA. You may
<br />have your consultant, AGE, attend also. The EHD understand that finances are a problem at
<br />this time and would like to work out a schedule with you that allows for you to continue your
<br />required remediation and work within your budget also.
<br />Please be prepared to discuss the following concerns:
<br />1. A lack of vertical ground water plume delineation near MW4 and MW -5;
<br />2. A lack of lateral ground water plume delineation in all five hydrological units (HU),
<br />particularly toward the north and the east and toward the residential areas;
<br />3. A lack of monitoring wells with screened intervals between 40 feet below ground surface <�
<br />(' bgs) and 100' bgs;
<br />4. The potential for vapor intrusion to the nearby residences located around the site has
<br />not been evaluated. Some of those houses appear to have either half or full basements
<br />and are very close to monitoring wells with elevated levels of dissolved petroleum in the
<br />ground water;
<br />5. The lack of sorbed and dissolved contaminant mass estimates for the site, and
<br />6. The apparent instability of the dissolved plume.
<br />7. A time schedule for completion of remedial system installation, IRAP activation, and the
<br />date the work plan for continued investigation will be submitted to the EHD.
<br />You may direct your submittals and any questions you may have to Michael Infurna, at (209)
<br />� j
<br />Michael J. Infurna Jr., R HS Nuel C. Henderson Jr., PG
<br />Registered Environmental Health Specialist Engineering Geologist
<br />c: Mr. James L. Barton, CVRWOCB, Underground Storage Tank Unit, 11020 Sun Center
<br />Drive, #200, Rancho Cordova, CA 95670-6114
<br />Mr. Mark Owens, SWRCB, Division of Cleanup Water Programs, Underground Storage
<br />Tank Program, P.O. Box 944212, Sacramento, CA 94244-2120
<br />Mr. William Little, Advanced GeoEnvironmental, Inc., 837 Shaw Rd., Stockton, CA
<br />95215
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