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DocuSign Envelope ID:69988A31-1E33-444F-BB81-58BEC084f • Create a site specific Health and Safety Plan (HASP) consistent with applicable and appropriate requirements. • Conducting a site walk of the site which will include: o Coordinating with the Client to obtain access to the site; o Coordinating with a private utility locator to check for subsurface utilities that may interfere with project work, and a sweep of the areas of concern with ground penetrating radar(GPR) to identify possible anomalies that may represent complications during drilling; o Marking the surface of the site for Underground Services Alert (USA), as required by law; • Scheduling field activities that include coordinating with site owner, drilling contractor, analytical laboratory (establishing adequate turn-around-times for sample results), and regulatory agencies that must witness certain aspects of the work. Atlas will submit drilling permit applications to the San Joaquin County Environmental Health Department. Note that San Joaquin County Environmental Health Department may require a copy of analytical results as a condition of their permit. Task 2—Temporary Soil Vapor Probe Installation Atlas is proposing to advance four borings at the Subject Property using a Geoprobe®drilling rig, complete each boring as a soil vapor sampling probe, sample each probe once, and remove them under permit to evaluate the current site conditions. State and local regulatory agencies require soil vapor probes are installed in native soil. Four shallow soil borings will be advanced to depths of 5 feet below ground surface (bgs) to facilitate the collection of soil vapor samples across the Subject Property. Continuous soil quality field screening will be performed at all boring locations. Visual and olfactory methods of screening will be used during the field efforts to identify evidence of contamination. Each soil boring will be completed as a temporary soil vapor sampling probe, using '/4"or 1/8"tubing and a filter point. At least two hours after installation, each point will be purged and sampled according to current California Department of Toxic Substance Control (DTSC)soil vapor sampling guidelines using laboratory- supplied manifolds and stainless steel Summa canisters. Upon completion of sampling, each probe will be removed and the borings will be filled to near grade with neat cement grout under the supervision of a representative from EDCEMD. The borings will be patched with the appropriate materials to match the surface (including asphalt or concrete patch where needed). Task 3—Laboratory Analyses Each vapor sample will be analyzed for volatile organic carbons and TPH as gasoline via EPA Method TO- 15. The laboratory analysis will be completed on a standard two-week turnaround time. Expedited results can be requested for an additional fee depending on laboratory availability. Task 4—Reporting Following completion of fieldwork,Atlas will prepare a report that will include a description of field activities, boring logs, laboratory derived analytical data presented in tabular form, maps indicating the location of all samples, a comparison of analytical results to Environmental Screening Levels, and conclusions. The work described in this proposal will be performed under the direction of a California Registered Professional Engineer or California Registered Geologist.