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SAP/QAPP Addendum Lodi-125 N Stockton Final March 24,2025 6.4 Hazardous Building Materials Sampling During the hazardous building materials survey,a California Division of Occupational Safety and Health- certified asbestos consultant or certified site surveillance technician will collect samples of suspected ACM.A California Department of Public Health-certified lead-related construction inspector/risk assessor may collect paint chip samples of suspected LBP. All samples collected during the hazardous building materials survey will be labeled,recorded,packed,and shipped per Toeroek Team SOP#017-2,Recording of Notes in Field Logbook,and SOP#015-1,Packaging and Shipping Samples,in Appendix C and per Site-Specific QAPP Worksheet#19. 6.4.1 Structural Materials Sampling The Toeroek Team will collect bulk samples from building materials suspected to be ACM. Sample locations will be based on the results of the asbestos inspection by the Toeroek Team.The asbestos inspection will include exterior and interior room-by-room assessment of the unoccupied office building to identify quantities and locations of suspected ACM that may require pre-demolition abatement in accordance with NESHAP.The asbestos inspection will follow the sampling guidelines and methods established in AHERA (40 CFR 763) for use in schools.Based on the approximate square footages of the unoccupied office building,an estimated 100 suspected ACM samples will be collected. The Toeroek Team will collect bulk samples using sampling devices appropriate for the suspected building materials.Decontamination of non-dedicated sampling equipment will proceed via a dry wipe after sampling at each sampling location. Sample locations and material quantities will be recorded on an inspection log. All samples will be stored in Whirl-Pak®bags,pending submittal to the NVLAP-accredited analytical laboratory for asbestos analysis via PLM per EPA Method 600/R-93/116 (EPA 1993).Additionally,a portion of asbestos-detected samples with results less than 3 percent asbestos via PLM will be reanalyzed by application of EPA's 1,000-point-count method. Sample collection will accord with Toeroek Team SOP #005-2,Bulk Materials Sampling(Appendix C). Sampling locations and sampling and analytical methods are conveyed in Site-Specific QAPP Worksheet#18. 6.4.2 Lead-Based Paint Screening Suspected LBP will be screened with an XRF spectrometer and,if warranted,paint chip samples will be collected for laboratory analysis for lead.XRF screening is the recommended method to identify the concentration of lead in paint.The XRF instrument applied during this project will be the Viken Pb200iTm 50