SITE INFORMATION AND CORRESPONDENCE FILE 1

Home Browse Search

CLEA RWATER G R O U P, I N C. phn,42r, o Mr. Ron Rowe MA y 2 3 9,Ma 2, 1995 San Joaquin County Public Health Services Environmental Health Department EUV;* P. O. Box 388 / E Stockton, CA 95201-0388 Re: Olivarez Site, 300 South Stockton Street, Stockton Dear Mr. Rowe, Thank you for calling so quickly in response to the letter regarding the status of the referenced site. I am sorry that you did not feel it appropriate to discuss excavation backfilling prior to my completion of the previously referenced well installation report. I will endeavor to include as much information as I think you may require, in order to make the process as efficient as possible. I feel it is important to touch on a couple of points you raised during our conversation. As follows: • The purpose of my short letter this morning was not, as you put it, a solicitation of an education regarding backfilling protocol. The letter was simply an attempt at providing an update of site status and facilitating a productive dialogue regarding longer term activities. I felt that investing a moment of our time in the process at this point would likely result in a much greater savings further down the line, as I would have been able to ensure the inclusion of all the backfilling information you felt was important in the pending report. • You asked me what I intended to propose regarding the remediation of soil and groundwater beneath this site. I indicated that several areas of concern need to be evaluated prior to moving into effective remedial trade-off analysis, including the definition of the extent of contamination in soil and groundwater and the establishment of the physical characteristics of the subsurface through aquifer and vadose zone testing. I hope that this response was satisfactory. Note that a discussion of these longer term methods of site characterization will be provided in the forthcoming report. • When I indicated that one of the methods of vadose zone remediation may include soil vapor extraction, you stated that you hoped the system would not be designed like the Clearwater system currently operating in Escalon. This statement caught me a bit off guard, primarily because we weren't talking about Escalon, but secondarily because of the fact that we had discussed the Escalon site extensively during our recent meeting in Stockton. If there are any other aspects of the installation or operation of the Escalon system that you would like to bring to my attention, please continue to not hesitate to do so. 1125 Atlantic Avenue•Suite 102•Alameda•California•94501 • (510)337-8730 9 Fax(510)523-0984