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Table C-2: Containers,Preservation, and Holding Times for Air Sample Analyses GeosynteC <br /> Quality Assurance Project Plan consultants <br /> Park Woods Shopping Center <br /> Stockton, California <br /> Parameter Matrix Analytical Methods Container Preservation Maximum Holding Time <br /> Volatile Organic 1 Liter or 6 Liter Summa <br /> Soil Vapor/Sub Slab USEPA TO-15 NA 30 days <br /> Compounds Canister2 <br /> Volatile Organic 1 Liter or 6 Liter Summa <br /> Indoor/Outdoor Air USEPA TO-15 SIM NA 30 days <br /> Compounds Canister2 <br /> Helium Soil Vapor/Sub ASTM D1946 1 Liter Summa Canister NA 30 days <br /> Slab/Indoor/Outdoor Air <br /> Notes: <br /> Containers,preservation,and holding times given are for referenced methods. <br /> 1 .Or equivalent method. <br /> 2.As needed to achieve required practical quantitation limits. <br /> Acronyms: <br /> ASTM—American Society of Testing and Materials <br /> NA—Not applicable <br /> SIM—Selective Ion Mode <br /> USEPA—United States Environmental Protection Agency <br /> Page 1 of 1 <br />