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i <br /> C1f• t Post-it's Fax Note 7671 Date I pll of sj l <br /> E T To III From <br /> 1 Co./Dept. n , W Co. JC <br /> CONDOR EARTH 'TECHNOLOGIES INC Phone K Phone # <br /> b <br /> Fax # _ /, (� Fax t <br /> Turlock, CA 95381 FAX (209) 532-0773 <br /> May 2, 1996 (FAX (209) 634 <br /> 68-9248 <br /> Mr. Remo Canepa <br /> Canepa' s Car Wash ENVIRONMENTAL HEALTH DIVISION <br /> 1536 N. Hunter Street 304 E . Weber Ave . Third Floor <br /> Stockton, California 95202 P. O. Box 3885 St oc n CA 95201 -0388 <br /> Approved <br /> Denied ❑ <br /> Conditions �� <br /> RE: Addendum to Proposal <br /> Site Evaluation/Quarterly Groundwat 8 e by <br /> Canepa's Car Wash <br /> 6230 Pacific Avenue � DIfiidM1L <br /> Stockton, California 95207 ( <br /> �j`'`�r�'C,2� �t,tfts� ��r,W�mvrwiY✓uK <br /> LATax Fr✓L D �Tba) . <br /> Dear Mr. Canepa, <br /> As requested by Mr. Ronald Rowe of the San Joaquin County Public Health Services, <br /> Environmental Health Division (PHS/EHD) this letter is* presented as an addendum to our proposal <br /> dated April 8, 1996 . The purpose of the addendum is to detail the investigative work to be conducted <br /> during the soil vapor extraction (SVE) system evaluation. The following work will be completed <br /> during the site evaluation: <br /> 1 ) Explore the condition of all SVE wells at the site by evaluating each well for the <br /> presence or absence of groundwater in or above the screened interval including <br /> measurements of depth to groundwater and the total depth of casing. <br /> 2) Calculate the volume of soil in the treatment area, including mass volume of <br /> hydrocarbons based on existing soil boring data. <br /> 3 ) Determine the maximum flow rate and vacuum rating of the blower motor, including <br /> type (i.e., rotary, regenerative, etc.). <br /> 4) Describe all instrumentation currently available or necessary in the testing and <br /> operational phases for the SVE system. <br /> 5) Calculate the radius of influence and poKe volume exchange rates which may support <br /> these values. <br /> ENVIRONMENTAL <br /> GEOLOGICAL0 ENGINEERING GEOTECHNICAL <br />