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i k _ biological toxicity screening. Our laboratories perform work under multiple federal and ` state certification programs and national accreditation programs. Air Quality Testing; i CAS provides air quality testing and industrial hygiene services for a wide range of clients and industries through its dedicated Air Quality laboratory. The lab is accredited by the American Industrial Hygiene Association (AIHA) for the analysis of organic f compounds and participates in the quarterly Proficiency Analytical Testing (PAT) program administered by the AIHA. The Air Quality laboratory specializes in the analysis of volatile and semi-volatile compounds in samples such as ambient air, landfill gas, soil gas, industrial source i emissions, odor analyses and indoor air quality investigations. This facility analyzes whole air samples, as well as those requiring solvent or thermal desorption. Other i services available include material emission/off-gassing studies and product evaluations. The laboratory has a 1000-cubic foot testing room and one-liter simulated environmental chambers available for product testing. Recent projects have included evaluations of the performance of residential air purifiers, monitoring of workplace exposures and IAQ/odor evaluations. I CERCLA and Remedial Investigation and Feasibility Studies(RIFS) Since 1986, CAS has performed chemical analyses in support of remedial investigation and feasibility studies (RI/FS), risk assessment, natural resource damage assessments, remedial activities for Superfund sites and related programs. Many of these programs have required CLP methodologies and deliverables for both organic and inorganic parameters on large numbers of air, water, soil and sediment samples. Analytical parameters have included a wide spectrum of methodologies. In some cases, standard operating procedures were written as part of the quality assurance i project plan, which outlines project organization and responsibilities, data quality and sample management objectives, stringent quality control, and performance and system j audit procedures. CAS has developed special protocols for analytical, quality control, and sampling procedures for specialized methodology of non-routine matrices needed to support project goals. CAS can complement the site project team by participating early in the planning stages and by providing technical advice to all involved including the consultants, potentially liable parties, and governing agencies. I i Page 23 of 29