SR2501523 - Laserfiche WebLink

Home Browse Search

Cleanup in Vulnerable Communities'Initiative Discovery Project Reference:Favorite Cleaners and Enforcement Discovery Investigation Work Plan Project Number:60688620 (e.g., improperly cleaned sampling equipment or cross-contamination). Planned field equipment rinsate blanks are presented in Table 6. Field equipment rinsate blanks will be collected at a minimum frequency of one per set of sampling equipment per sample matrix per day that non-dedicated sampling equipment is used.The field equipment rinsate blanks will be submitted to the laboratory"blind"(i.e., given a fictitious name so that the laboratory will not recognize them as blanks). The field equipment rinsate blanks will be analyzed by the same method and for the same analytes as the samples collected with the sampling equipment.The analytical goal for field equipment rinsate blanks is to have no detectable analytes. Field Duplicates(for soil vapor, sub-slab vapor, groundwater, and indoor and outdoor ambient air) Afield duplicate is a sample that is collected and analyzed in the same manner, and at the same time and location, as a primary sample. Field duplicate samples will be collected and analyzed to evaluate sampling and analytical precision(reproducibility).Agreement between primary and duplicate sample results will indicate good sampling and analytical precision. The precision goal for field duplicate results will be plus or minus 50-percent(%)relative percent difference(RPD)as compared to the primary results. For soil vapor samples,field duplicate samples will be collected by obtaining a second volume of soil vapor immediately after the initial sample is collected. If more than one container is required,then the primary and duplicate container for each analysis will be filled before containers for the next analysis are filled. Specific locations for collection of field duplicates are indicated on Tables 1 through 3;these locations were selected at random, because there are no previous data available to estimate which locations may have moderate contaminant concentrations. Field duplicates will be collected at a minimum frequency of 10% of the primary samples collected, except that the soil vapor survey will include at least one duplicate sample per 20 samples or per batch, whichever is more often, in accordance with the DTSC's Soil Gas Advisory(DTSC 2015b). The field duplicates will be submitted to the laboratory"blind"(i.e., given a fictitious name so that the laboratory will not recognize them as duplicates). 3.2.5.7 Field Equipment and Calibration All field equipment will be provided by AECOM, and all field instruments will be calibrated per the manufacturer's instructions. The SOPS and calibration methods are provided in Appendix C. List of Field Equipment AECOM will provide the following field equipment, materials, and supplies: 1. A RAE System by Honeywell such as a MiniRAE 3000+ PID(or equivalent); 2. Sample containers obtained from the laboratory,which will assure that they are clean or new,free of contaminants: a. Summa®canisters(soil vapor), b. Hydrochloric acid pre-preserved VOA vials(groundwater); 3. Polyethylene bailer or decontaminated stainless-steel bailer; 4. Temperature blanks and trip blanks obtained from the laboratory for each cooler; 5. Ziploc plastic bags; 6. Large plastic trash bags; 7. Insulated cooler and ice; 8. Deionized water; 9. Non-phosphate detergent; 10. Bubble wrap or Styrofoam peanuts for sample packaging; 11. Self-adhesive custody seals; Prepared for: California Department of Toxic Substances Control AECOM 19