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in the annulus is noted on page 5. Be sure to call out/show that a <br /> minimum 2-inch annulus all around the casing is provided. <br /> 3- duration of wells in the ground and clear understanding of the protection you'll use <br /> to ensure NO surface contaminant can enter the casing. <br /> 4-disposition/destruction method and WHEN the pilot wells will be destroyed, if NOT <br /> used permanently for SVE later on. <br /> 5- and finally, work plan approval by your lead agency. <br /> Roberto, you planning on generating an approval letter? if so, cc me please. I'll take <br /> an email if you aren't planning on a formal approval letter. <br /> thanks , <br /> mike <br /> (209) 468-3454 <br /> From: MacLeod, Max [mailto:Max.MacLeod@lfr.com] <br /> Sent: Wednesday, June 10, 2009 4:17 PM <br /> To: Mike Infurna [EH] <br /> Cc: Goldstein, Lucas; Seyfried, Scott <br /> Subject: C&S Martinizing Robinhood Plaza <br /> Hi Mike- we were just speaking of the wells that we plan to install as part of our <br /> pilot test. Here is the work plan (not yet approved by the Central Valley RWQCB). <br /> And here is the key section from the document about the four vapor wells we <br /> propose to install: <br /> To achieve the goals stated above, LFR proposes to install four soil-vapor wells <br /> (Figure 3). The <br /> soil-vapor wells will be installed inside the facility using a limited-access drill <br /> and/or hand auger. <br /> Soil-vapor wells will be screened approximately 2 to 10 feet bgs. An LFR <br /> geologist will record a <br /> description of lithology as drilling progresses. After the desired depth of the <br /> borehole is reached, a <br /> 2-inch-diameter casing will be installed and the annular space between the well <br /> screen and the <br /> formation will be filled with No. 2 /12 Monterey sand to approximately the top of <br /> the screened <br /> interval. Approximately 1 foot of bentonite pellets will be placed above the sand <br /> 2 <br />