Laserfiche WebLink
r <br /> AMR <br /> WATI.'IZWORK CORP. — <br /> A RESNA Company fm•i:onmental Solutions <br /> Through Applied Science, <br /> Fngineering&Construction <br /> r <br /> 1710 rdain Strcet <br /> Pft <br /> E,calon.CA 95320 EI F.Ph()ne: (209) 838-3507 EC, <br /> Fax: (209) 838.3509 OCT 17 f991 <br /> pctober 14, 1991 <br /> ENVIRONMENTAL HRALTf <br /> PERMIT/SERVICES <br /> Mr. Harlan Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> RE: Third Quarter 1991 Monitoring Report, Knowles Property, 1140 Wes[ Hammer <br /> Lane, Stockton, CA 95207 <br /> Dear Harlan: <br /> sarterly monitoring was conducted at the above referenced site(Figure <br /> On September 11, 1991,q <br /> 1). These activities included measuring depth to water and purging and sampling of all wells. <br /> The depth to first water at the site had dropped approximately 1.1 feet since the June monitoring 3 <br /> event. The groundwater gradient was consistent with previous monitoring and is in an easterly <br /> direction at 0.003 ft/ft. (Table 1). A groundwater gradient plot created using a kriging program <br /> is shown on Figure 2. Monitoring data is contained in Attachment 1. <br /> All wells at the site, with the exception of MW and MW3, which were dry, and well MW5 <br /> which contained free product, were purged and sampled. The groundwater samples were <br /> analyzed for benzene,toluene,ethylbenzene,xylenes(BTEX),and total petroleum hydrocarbons <br /> as gasoline(TPHG). Samples were sent to Applied Analytical Laboratories (DHS cert. #1211) <br /> for analysis. Sample collection was conducted in accordance with WaterWork`s Quality <br /> Assurance/Quality Control Plan (Appendix 11, October 25, 1990 Workplan). Laboratory data <br /> sheets and chain-of-custody documenE�tion are contained in Attachment 1. <br /> Dissolved petroleum hydrocarbons were detected in monitoring well MW2 and MW4. Free <br /> d in monitoring well MWS. <br /> product was detecte <br />