WORK PLANS - Laserfiche WebLink

Home Browse Search

SAP/QAPP Addendum Lodi-125 N Stockton Final March 24,2025 Health Administration (OSHA)Title 29 Code of Federal Kegulations(CFR) 1910.1001(b) and 0.1 percent asbestos per the California Division of Occupational Safety and Health (DOSH) asbestos material regulations.X-ray fluorescence (XRF) screening results and/or paint exceeding 5,000 parts per million (ppm) or 0.5 percent by weight of lead will be considered positive for LBP per the U.S.Department of Housing and Urban Development (HUD)guidelines (HUD 2012) and EPA regulations (40 CFR Part 745—Lead Based Paint Poisoning Prevention in Certain Residential Structures). Collection of caulk samples for PCB analysis will proceed according to EPA guidance and EPA 40 CFR 761.62(b)(4)(ii). EPA specifies public health SLs of PCB exposures below which EPA believes exposure will not cause harm.Bulk sampling of suspected PCB-containing caulk will proceed in a manner ensuring representation of only the suspect caulk material in the sample. 3.1.3 Soil Sampling Soil sampling will be conducted throughout the Site as described in the following subsections. 3.1.3.1 Historical Manufactured Gas Plant Soil Sampling Soil borings in the area of the historical MPG will be advanced to 5 feet bgs at seven boring locations on the Site to collect soil samples (Figure 3).The soil boring locations will be spaced inside and adjacent to the approximate location of the historical MGP (Stantec,Inc. 2023).These will further delineate previously detected lead and arsenic exceedances in the MGP area and inform soil handling and disposal procedures during redevelopment. Subsurface soil samples will be collected at the following intervals: 0.5 to 1 feet bgs,2 to 3 feet bgs,and 3 to 5 feet bgs. Soil samples will be analyzed for arsenic and lead (EPA Method 6010), PAHs (EPA Method 8270-SIM),and TPH (EPA Method 8015M TPH [total petroleum hydrocarbons as gasoline (TPH-g),total petroleum hydrocarbons as diesel(TPH-d),and total petroleum hydrocarbons as motor oil(TPH-mo)]).Analytical results will be compared to the EPA regional screening levels (RSL) for industrial and residential soil(EPA 2024),the California Department of Toxic Substances Control(DTSC) SLs for commercial and residential receptors (DTSC 2022),and the San Francisco Bay Regional Water Quality Control Board (RWQCB)Tier 1 environmental SLs (ESL) (RWQCB 2019). 3.1.3.2 Historical Underground Storage Tank Soil Sampling Soil borings will be advanced to 15 feet bgs at four boring locations on the Site to collect soil samples (Figure 3).The soil boring locations will be north,east,south,and west 5-foot step-outs from the previous approximate location of a former UST (Stantec,Inc. 2023).These will further delineate previously detected 10