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����► Proposal No. 99665 <br /> 2641 North Wilson Way <br /> e `� Stockton, California 95205 E I <br /> • 0 November 20, 2024 <br /> Page 2 <br /> o Volatile Organic Compounds (VOCs) using US EPA Testing Method 8260B ..........................4 samples. <br /> o RCRA-8 Metals using US EPA Testing Method 6010B....................................................4 samples. <br /> • The following types and number of soil as analyses are included: <br /> • VOCs using US EPA Testing Method TO-15...............................................................4 samples. <br /> o Helium using ASTM D-1946-90.............................................................................4 samples. <br /> • Backfill borings per applicable regulations. Temporary soil vapor probe locations (SB-1 through SB-4) will be over- <br /> drilled following sample collection by advancing drill rod hydraulically to five feet to remove bentonite. The boring <br /> hole will then be filled with neat cement grout to surface to match the surrounding conditions. <br /> • Prepare a final technical report detailing methods and results of the investigation, including tables, figures, and <br /> appendices. Analytical results generated during the investigation will be compared to Revision 2 of the Environmental <br /> Screening Levels issued by the San Francisco Bay Regional Water Quality Control Board, issued in July 2019. <br /> Schedule: <br /> The project schedule will be communicated to the Client within one week following authorization. Analytical results may <br /> be verbally reported to the Client, assuming payment terms are met, approximately one week following the date of field <br /> work, unless faster sample turnaround times are selected. The final report will be issued promptly upon receipt of all <br /> necessary documentation. AEI anticipates a total working time of approximately 5 weeks, not including holidays for this <br /> project if the Client selected Standard Project TAT. <br /> Closing: <br /> AEI appreciates the opportunity to be of service. If you have any questions or comments, please do not hesitate to contact <br /> Justin Hertz at 925.746.6016, ihertzCaeiconsutlants.com, or the undersigned. <br /> Sincerely, <br /> Kate Lamb Cade Klock, P.G. 9833 <br /> Regional Director Senior Geologist <br /> AEI Consultants <br /> 701 Campus Square W, Suite 723A <br /> El Segundo, California 90245 <br /> Email: klambCaeiconsultants.com <br /> 773.655.1263 <br /> Enclosed: Figure 1 - Proposed Sampling Locations <br /> Client Responsibilities:It is our Client's responsibility to provide adequate information for AEI to complete the requested scope of services. This <br /> includes sufficient information to identity property boundaries, the arrangement of complete site access and identifying a knowledgeable site <br /> contact. If there are known copies of prior reports or other relevant documentation, the Client will assist AEI in obtaining them prior to the <br /> completion of our assessment. <br /> Client Initials: Date: <br />