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Mr. Buehler <br /> February 9,2024 <br /> Page 6 of 7 <br /> days prior to the scheduled sampling event. All work will be performed under the direction of a <br /> professional geologist licensed in California. <br /> INVESTIGATION-DERIVED WASTE HANDLING <br /> Investigation-derived waste (IDW) will consist of soil cuttings, monitoring well development and <br /> purge water,and decontamination water. IDW will be stored on-Site in properly labeled 55-gallon <br /> drums pending waste characterization profiling. Following waste characterization profiling, IDW <br /> will be disposed of in accordance with applicable laws and regulations. <br /> REPORTING <br /> A Site Assessment-Groundwater and Soil Vapor Investigation Report (Report) will be submitted to <br /> the RWQCB following the completion of investigation activities. The Report will describe field <br /> activities,summarize results,and determine if additional soil vapor extraction wells are necessary. <br /> SCHEDULE <br /> A schedule for the activities proposed in this Work Plan is provided below. The anticipated <br /> schedule assumes that RWQCB approval is received within 30 days from receipt of this Work Plan. <br /> • March 2024- Permitting and pre-field activities. <br /> • April 2024-Site assessment installation and soil vapor sampling activities. <br /> • May 2024-Conduct first semi-annual 2024 groundwater monitoring event. <br /> • June 2024-Submittal of Site Assessment Report to RWQCB. <br /> CLOSURE <br /> If you have any questions or require additional information, please do not hesitate to call Travis <br /> Falls at (707) 694-6027. S�ONAL_QFp` <br /> OG <br /> Rk�p <br /> Sincerely, p� <br /> a� Caza i�ne� cA� <br /> i <br /> 9720 <br /> Travis Falls Ricky Villarreal, P.G., C.HG. FOF CA1.�F0��`� <br /> Project Scientist Senior Hydrogeologist <br /> �- <br /> cJ <br /> Greg McIver <br /> Principal Scientist <br /> ATTACHMENTS <br /> Figure 1 -Site Location Map <br /> Figure 2-Site Plan with Proposed Boring Locations <br /> Attachment A-RWQCB Correspondence <br />