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Cleanup in Vulnerable Communities'Initiative Discovery Project Reference:Favorite Cleaners and Enforcement Discovery Investigation Work Plan Project Number:60688620 3.2.9.3 Photographs Photographs will be taken as needed at areas of interest on-site. They will serve to verify information entered in the field logbook.When a photograph is taken,the following information will be written in the logbook or will be recorded in a separate field photography log: • Time, date, location, and, if appropriate, weather conditions; • Description of the subject photographed, including sample identification number; • Point-of-view orientation of the photograph(e.g.,to the west;to the east-southeast); and • Name of person taking the photograph. 3.2.10 Decontamination Procedures All equipment that comes into contact with potentially contaminated soil or water will be decontaminated consistently to assure the quality of samples collected. Disposable equipment intended for one time use will not be decontaminated but will be packaged for appropriate disposal. Prior to and after each use, reusable sampling equipment or containers will be properly decontaminated.All drilling and sampling devices used will be decontaminated using the following procedures: • Non-phosphate detergent and tap water wash, using a brush if necessary; • Tap-water rinse; • Initial deionized/distilled water rinse; • Final deionized/distilled water rinse; and • Set on clean plastic sheeting to air dry. Should observable or suspected organic material remain on the sampling equipment after these decontamination steps are performed, a hexane rinse followed by an isopropyl alcohol rinse will be performed. Equipment will be decontaminated in a pre-designated area on pallets or plastic sheeting, and clean bulky equipment will be stored on plastic sheeting in uncontaminated areas.When not in use,decontaminated sampling equipment will be covered,wrapped in, or covered with clean plastic or aluminum foil. If aluminum foil is used during the investigation, it will be previously washed with a non-phosphate detergent and allowed to air dry. 3.2.11 Investigation-Derived Waste Management In the process of collecting environmental samples during on-site soil vapor, soil, and groundwater sampling, different types of potentially contaminated IDW may be generated that include the following: • Used personal protective equipment(PPE), • Disposable sampling equipment, • Purged groundwater and excess groundwater collected for sample container filling, • Decontamination fluids, and • Soil cuttings. The USEPA's National Contingency Plan(USEPA 2015b)requires that management of IDW generated during such investigations comply with all applicable or relevant and appropriate requirements to the extent practicable. Listed below are the procedures that will be followed for handling the IDW.These procedures have enough flexibility to allow the site investigation team to use its professional judgment for the proper disposal method for each type of IDW generated at each sampling location.Any waste storage containers, such as 55-gallon drums,will be sealed and labeled (including date)and placed in a secure area of the Subject Property. • Unless there is contact with apparently contaminated material, used PPE and disposable equipment such as acetate liners, can be double-bagged and placed in a municipal refuse dumpster. These wastes are not Prepared for: California Department of Toxic Substances Control AECOM 24