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01 Sampling and Analysis Plan Port of Stockton—Rail and Bridge,Stockton,CA A minimum of two samples will be collected from each boring at the depths listed on Table 2.1. Sample locations may be adjusted based on field geologist observations during drilling, such as PID detections and olfactory or visual indications of contamination, so that samples are collected from suspect impacted areas. Deviation from the proposed sample depths listed on Table 2.1 shall be approved by the Field Task Leader. Soil samples will be collected in containers listed on Table 2.4 and labeled in accordance with SOP-3 included in Error! Reference source not found.. Samples will be shipped, under chain of custody control, for overnight delivery to a California state certified laboratory and analyzed for COCs listed on Table 2.1. 3.2.2 Groundwater Sampling and Analysis Groundwater samples will be collected from DPT borings identified on Table 2.2 and depicted on Figure 2.2. After reaching groundwater, the soil core will be removed from the DPT drive rod and a new 3/4-inch inside diameter polyvinyl chloride(PVC)slotted screen and casing will be lowered through the DPT drive rod to the bottom of the boring. The DPT rod will be retracted up to 5 ft to allow groundwater into the screen. Groundwater samples will be collected using a disposable bailer or peristaltic pump with disposable tubing. The sample will be decanted from the bailer or pumped directly into laboratory supplied containers. Samples collected for dissolved metals will be filtered in the field with disposable 0.45 micrometer(pm)filters before sample preservation. Groundwater samples will be collected in laboratory supplied containers listed on Table 2.4 and labeled in accordance with SOP-3, included in Error! Reference source not found.. Samples will be shipped under chain of custody control, in accordance with SOP-4 (Appendix C), for overnight delivery to a California certified laboratory and analyzed for constituents listed on Table 2.2. 3.2.3 Lead Paint and Asbestos Sampling and Analysis LBP and ACM samples will be collected using a chisel and hammer at areas suspect to contain LBP and ACM at the railroad truss bridge. The ACM/LBP investigation will be conducted under the direction and quality control of a California Certified Asbestos Consultant (CAC #05-3872) and California Certified Lead Inspector/Assessor (CLIA#LRC-2886). The number of ACM/LBP samples to be collected is determined based on the area of the structure, that follows 40 CFR 763.86 — Sampling, which requires an accredited inspector to collect, representative samples from each homogeneous area. The number of homogenous areas suspected to contain LBP and ACM on the bridge and support structure, will be visually reviewed during the Phase II ESA prior to sample collection. Types of materials on the bridge suspected to contain ACM include concrete bridge abutments and expansion joint compounds. Based on a review of the photos of the bridge structure, approximately five (5) paint chip samples will be collected from the bridge structure and analyzed for lead content and approximately nine (9) ACM samples will be collected from materials suspected to contain asbestos. Samples will be collected in plastic bags (Table 2.4). LBP and ACM samples will be collected from locations identified on Table 2.3 and depicted on Figure 2.5. September 8,2023 1 4