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Workplan for Vertical Groundwater Investigation <br /> _ And Bench Test for In-Situ Oxidation <br /> 7835 Thornton Road, Stockton, CA <br /> �. Page 8 of 8 <br /> Two separate direct- push rods will be installed at each location, covering a total of 16 vertical <br /> feet. This method of selective vertical injection will deliver reagent across the entire vertical <br /> extent of the target treatment interval. <br /> The ISOTEC reagent injection is a five-step process. ISOTEC begins by injecting water into the <br /> subsurface, followed by catalyst or oxidizer. Water is then injected into the direct-push rod to <br /> flush the reagent away from the borehole. Following the water flush, either catalyst or oxidizer, <br /> whichever was not injected first, is injected into the subsurface. A final water injection is <br /> completed to flush the catalyst or oxidizer from the injection equipment. This process is repeated <br /> for each depth at each injection location. <br /> Chemical application equipment consists of varying size storage containers, pneumatic double- <br /> diaphragm pumps, 314-inch diameter (.314") reinforced tubing, valves, and cam-lock connectors. <br /> Transfer of the reagents from the storage and/or mixing containers to the point of injection will <br /> be performed via a double-diaphragm pump. Reagents are conveyed through 314" reinforced <br /> tubing and connected to the probe rod with a wellhead containing ball valves, fittings and a <br /> pressure gauge. An injection method schematic is shown in Attachment 4. <br /> REPORTING <br /> - Ground.Zero will prepare a technical report for submittal to EHD and RWQCB describing field <br /> activities (drilling, well installation, sampling, bench test), results, conclusions, and <br /> recommendations. <br /> All field activities performed at the site will be conducted in accordance with Ground Zero's <br /> Quality Assurance/Quality Control Plan and Site Specific Site Safety Plan on file with EHD. <br /> Drill cuttings and rinsate generated from well purging and equipment decontamination will be <br /> uo <br /> properly contained and stored on site pending laboratory results and the development of disposal <br /> options. <br /> Please contact Ground Zero at your convenience if you have any questions or comments <br /> regarding this submittal <br /> Respectfully, �S�ON p- GF0. <br /> Ground Zero Analysis Inc. <br /> No.6795 <br /> cPj9 ��Q <br /> John P. Lane, PG OF CA1-�F°�' <br /> CA Registered Geologist 6795 <br /> i <br /> cc: Mr. Carl Knowles <br /> Mr. John Dunlap <br /> Mr. James L.L. Barton, RWQCB <br /> G:IGROUNDZEIKNOWLES.HAMIREPORTSIW KPLAN_deepwe11_bench2.doc <br />