[en] This document presents emissions from the Environmental Analytical Laboratory (EAL). The facility was originally designed and built by Westinghouse Hanford Company to perform radiological and nonradiological screening and soils analysis on a quick turnaround basis in support of the Comprehensive Environmental Response, Compensation, and Liability, Act of 1980 (CERCLA) operable units. The facility would like to broaden its analytical capabilities by providing both radiological and nonradiological screening and sample analysis for Resource Conservation and Recovery Act of 19 76 (RCRA) inactive treatment storage, and disposal (TSD) units contained within the CERCLA operable units. The EAL will be conducting both soil and water analysis. Air emissions will be generated from the laboratory standards (analytes and reagents) used for calibration. The EAL will be considered a toxic air pollution emission unit. The air emissions from the EAL are based on the chemical quantities processed annually. Quantities of standards and reagents used during analysis were obtained from the laboratory inventory list. The EAL inventory is listed in Table 1 of this document. Each sample will be prepared, screened, labeled, and controlled in the field prior to acceptance into the EAL. The samples are then transferred to MO-425 and MO-426 (trailers) that are designated for that particular type of analysis