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transportation was required. Following desorption with carbon disulfide, analyses were preformed by GC/MS. Analysis of on archived reserve samples nearly a year later produced the some characteristic pattern of chromatographic peaks as had been noted when the samples were first analyzed. This method of archiving samples could be useful in connection with many projects. In 1982 Dr. Mary Havlicek examined glass bottle samples taken in the vicinity of on oil refinery for trace organics. In this case, a packed column was used to separate the components of this complex mixture prior to analysis by GC/MS. Glass sampling bottles are generally not recommended for low-level analyses due to problems associated with leakage and adsorption to the container walls. Since the project in question involved levels approaching those associated with fire hazard, the choice of sampling containers was quite appropriate. Dr. Larry Hilpert, the newest member of the CCAS project team has devoted several years to the analysis of trace organics in air pollution samples. Included among this work was the development of a certified reference moteral for the National Bureau of Standards. Dr. Hilpert has 10 years of work experience with the National Bureau of Standards where he has participated in methods development using GC/MS and HPLC. He has more than 10 publications to his credit and is expected to provide major inputs to projects of this type. QUALITY ASSURANCE Quality assurance at CCAS serves two important functions. The first function is the establishment of quality control activities relating to sample collection, siting of sampling stations, analytical protocols and data validation. The second function is the provision of such data quality information as precision accuracy and completeness. The sampling equipment intended for use on site consists of electropolished stainless steel canisters, the sampling manifolds described earlier in the text and presented in figures 2 and 3, Teflon and stainless steel pumps and three meteorological monitoring stations. Canisters and manifolds through which samples are to be passed are leak tested before being brought into the field. Timers, pumps etc. are similarly inspected to verify that they are in good operating condition. Prior to removal of a sample from the sampling manifold, pressure is recorded in the field sampling record book. Meteorological conditions are noted. The time at which sample collection ceased is recorded as is the actual time of sample pickup. The samplers initials and can number are also entered in the field notebook. While the can and the sampler are still at the sampling station, the location is marked on the site map