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CLEARWATE <br /> C <br /> G o U P, I� v <br /> rz <br /> Environmental Services <br /> 7 <br /> Mrs. Stella Ruiz November 15, 1999 <br /> 4491 West Durham Ferry Road: <br /> Tracy,CA 95376 <br /> l <br /> Re: Ruiz Grocery, 4491 West Durham Ferry Road,Tracy, CA <br /> Dear Mrs. Ruiz, <br /> F - I <br /> Enclosed please find a copy of Clearwater Group,Inc.'s(Cl <br /> 1999 <br /> Groundwater Mnitorrng Report- Fourth Quarter <br /> and Workplan for Confirmation Borings for your site. Copies of the report have'been distributed to the agencies <br /> listed below. <br /> a <br /> The report presents the results of recent ground water monitoring activities performed at your property,in November <br /> 1999. The results continue to indicate a downward trend in groundwater contaminants levels since active remediation was <br /> completed from October 1998 to September 1999. <br /> In their most recent letter, the San Joaquin County Public Health Services/Environmenial Health Division requested that <br /> we continue to monitor groundwater for at least a couple quarters to evaluate port-remediation trends, and they also <br /> indicated that confirmation borings would be required to demonstrate clean-up of the soil beneath the site.';Accordingly, <br /> this report also presents a workplan to perform this requested soil sampling. Soil samples will be collected from area of <br /> previously known contamination. The post-remediation samples results will be compared to the pre-remediation results to <br /> n, <br /> j determine if the system was sufficiently effective at cleaning up the soil beneath your property..'Based ori the results of <br /> j; <br /> remediation thus far,I am optimistic that results of this proposed sampling effort will be,positive. <br /> Pi <br /> If you have any questions about the project or scheduling,please feel free to call either Myself or Mr. Henry <br /> thHurkmans at <br /> (510) 893-5160. <br /> i Sincerely, ;. A <br /> Clearwater Group, Inc. <br /> Brian Gwinn, R.G. <br /> Senior Geologist <br /> enclosure i <br /> cc: Ms. Lori Duncan, SJCPHS/EHD s' ' <br /> z - <br /> Mr.Mark List. CVRWQCB. <br /> 520 Third Street,Suite 104 ♦ Oakland,California 94607 'Telephone 510-893-51"60 o Fax 510-893-5947 <br />