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Installation of Groundwater Monitoring Wells (2) <br />Two temporary groundwater monitoring wells will be installed at the southern portion of the Site to determine if <br />groundwater would pose a possible vapor intrusion threat. The proposed scope of work for monitoring well installation <br />is as follows: <br />Convert the soil borings into two-inch diameter temporary groundwater monitoring wells using 20 feet of 0.01- <br />inch screened two-inch diameter Schedule 40 PVC casing and 80 feet of two-inch diameter Schedule 40 PVC <br />casing, number 2/12 sand up to 78 feet bgs, bentonite (hydrated) from 75 feet bgs to 78 feet bgs, completed <br />with neat cement to approximately two feet bgs and concrete from approximately two feet bgs to ground <br />surface. The wells will be completed with steel locking well monuments. <br />Place soil cuttings in labeled 55-gallon, steel drums and storing the drums at the Site; <br />Survey the location and top-of-casing elevation of the wells to the nearest available benchmark (by a California- <br />licensed Professional Land Surveyor). <br />Please let me know if you need anything else to complete processing the Well Installation Application. Please let me <br />know via email when I can expect to receive the permits (permits issued) so that I can finalize the schedule. <br />Thank you Lor. <br />Matt Taylor <br />Supervising Environmental Scientist <br />mtaylorwallace-kuhl.com <br />916-372-1434 phone I 916-372-2565 fax <br />3050 Industrial Blvd., West Sacramento, CA 95691 <br />www.wallace-kuhl.com <br />Geotechnical Engineering I Environmental & Ecological Services I Engineering Geology I Earthwork and Construction <br />Materials Testing and Inspection I Construction Materials Laboratory <br />This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any <br />unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by <br />reply email and destroy all copies of the original message. <br />2