Laserfiche WebLink
23��--I& - <br /> CLEARWATE 1 1 <br /> G R O U P, 1 N C. �� j95 <br /> ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> Ms. Mary Meays July 7, 1995 <br /> San Joaquin County Public Health Services <br /> Environmental Health Department <br /> P. O. Box 388 <br /> Stockton, CA 95201-0388 <br /> Re: Ruiz Grocery, 4491 Durham Ferry Road, Tracy <br /> Dear Ms. Meays, <br /> This letter responds to your transmittal dated June 14, 1995. Requested <br /> information/clarification is provided in the order of the items listed in your letter. <br /> Page 1, paragraph 4 - "The results of soil sampling conducted during [well] <br /> installation are yet to be reported." As specified in the approved project workplan, a <br /> single soil sample was collected during the installation of RW-1. Results of analysis <br /> of this sample are attached. <br /> Page 2, paragraph 5, and Page 3, paragraph 3 - "The effects of well development must <br /> be evaluated before an alteration of the proposed feasibility [test] may be approved.", <br /> and "PHS/EHD has not noted that there has been a significant problem with <br /> monitoring wells dewatering during purging and sampling activities." The well <br /> development that was completed on Friday, May 19, 1995 consisted of surging and <br /> pumping of the well for approximately six hours. Measurements taken following <br /> the completion of development activity indicated a recharge rate of approximately <br /> 0.65 gallon per minute. <br /> Well development/purge logs generated by RESNA during previous field activities <br /> indicate that most site monitoring wells purge dry at a rate of 1-2 gallons per <br /> minute. These occurrences are supported by Clearwater observations recorded <br /> during the first 1995 sampling event. A sustained yield of less than a gallon per <br /> minute would likely be observed, should these wells be subjected to actual testing. <br /> These observations are consistent with those pertaining to the new recovery well <br /> and are considered to be "significant" as related to proposed pilot testing activities. <br /> 1125 Atlantic Avenue•Suite 102•Alameda•Califomia•94501 •(510)337-8730•Fax(510)523.0984 <br />