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WORK PLAN FOR LIMITED SITE INVESTIGATION Sandhu Property Tracy, California October 22, 2021 Terracon Project No. NA217074 Responsive Resourceful Reliable 5 Boring Abandonment Terracon will schedule the backfilling inspection with the SJCDEH no later than 48 hours prior to planned field work activities to ensure the availability of an SJCDEH representative. Additionally, Terracon will confirm the field work date and inspection time with the inspector 24 hours prior to field work. At the completion of sampling activities and in the presence of an SJCDEH representative, the soil borings will be backfilled using neat cement. A tremie pipe will be lowered to within three feet of the bottom of the boring and the cement slurry will be deposited into the borings via the tremie pipe. 2.7 Laboratory Analytical Program Refer to Table 1 – Sampling and Analytical Program for the planned sampling and analytical program. GENERAL COMMENTS The scope of services are based on the assumptions and limitations noted below. Limitations Terracon’s services will be performed in a manner consistent with generally accepted practices of the professional undertaken in similar studies in the same geographic area during the same period. Terracon- makes no warranties, express or implied, regarding its services, findings, conclusions or recommendations. Please note that Terracon does not warrant the work of laboratories, regulatory agencies or other third parties supplying information used in the preparation of the report. These LSI services will be performed in accordance with the scope of work agreed with you, our client, as set forth in this proposal and are not intended to be in strict conformance with ASTM E1903-11. Findings, conclusions, and recommendations resulting from these services will be based upon information derived from on-site activities and other services performed under this scope of work; such information is subject to change over time. Certain indicators of the presence of hazardous substances, petroleum products, or other constituents may have been latent, inaccessible, unobservable, non-detectable, or not present during these services, and we cannot represent that the site contains no hazardous substances, toxic substances, petroleum products, or other latent conditions beyond those identified during this LSI. Subsurface conditions may vary from those encountered at specific borings or wells or during other surveys, tests, assessments, investigations or exploratory services; the data, interpretations, findings and our recommendations are based solely upon data obtained at the time and within the scope of these services.