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Hazard Evaluation and Technical Assistance Report No. TA 79-10, Environmental Protection Agency, Beltsville Agricultural Research Center, Beltsville, Maryland.

PB80148174

Publication Date	1979
Personal Author	Lewis, F. A.
Page Count	14
Abstract	Employee exposure to benzene (71432), acetonitrile (75058), tetrahydrofuran (109999) and 1,4-dioxane vapors (123911) was evaluated on January 17 and 30, 1979 at Lab Building 409 of the Environmental Protection Agency's Beltsville Agriculture Research Center in Beltsville, Maryland. The evaluation was prompted by a request from the OSHA Office of Federal Agency Programs resulting from employee and union complaints about laboratory fume hoods and toxic materials storage in the building. Breathing zone samples were collected on activated charcoal tubes. Eight-hour Time Weighted Average samples and ceiling value samples were obtained and compared to environmental standards and criteria. All samples were analyzed by gas chromatography. Results show that employee exposure was below the reliable analytical limit of detection. It is recommended that exhaust roof ventilation be replaced with fans and stacks appropriate for lab hood exhaust, air replacement within the laboratory be at least six changes per hour, and plumbing be checked for the presence of the required number of vents and traps.
Keywords	Hazardous materials Industrial medicine Exposure Toxicity Criteria Inspection Standards Recommendations Industrial hygiene Concentration(Composition) Benzene Acetonitrile Vapors Toxic substances Occupational safety and health Research centers Air sampling CAS 109-99-9 CAS 71-43-2 CAS 75-05-8 Beltsville(Maryland) Furan/tetrahydro Dioxanes
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Hazard Evaluations and Technical Assistance Branch.
Document Type	Technical Report
NTIS Issue Number	198011

Hazard Evaluation and Technical Assistance Report No. TA 79-10, Environmental Protection Agency, Beltsville Agricultural Research Center, Beltsville, Maryland.

Hazard Evaluation and Technical Assistance Report No. TA 79-10, Environmental Protection Agency, Beltsville Agricultural Research Center, Beltsville, Maryland.
PB80148174

Publication Date	1979
Personal Author	Lewis, F. A.
Page Count	14
Abstract	Employee exposure to benzene (71432), acetonitrile (75058), tetrahydrofuran (109999) and 1,4-dioxane vapors (123911) was evaluated on January 17 and 30, 1979 at Lab Building 409 of the Environmental Protection Agency's Beltsville Agriculture Research Center in Beltsville, Maryland. The evaluation was prompted by a request from the OSHA Office of Federal Agency Programs resulting from employee and union complaints about laboratory fume hoods and toxic materials storage in the building. Breathing zone samples were collected on activated charcoal tubes. Eight-hour Time Weighted Average samples and ceiling value samples were obtained and compared to environmental standards and criteria. All samples were analyzed by gas chromatography. Results show that employee exposure was below the reliable analytical limit of detection. It is recommended that exhaust roof ventilation be replaced with fans and stacks appropriate for lab hood exhaust, air replacement within the laboratory be at least six changes per hour, and plumbing be checked for the presence of the required number of vents and traps.
Keywords	Hazardous materials Industrial medicine Exposure Toxicity Criteria Inspection Standards Recommendations Industrial hygiene Concentration(Composition) Benzene Acetonitrile Vapors Toxic substances Occupational safety and health Research centers Air sampling CAS 109-99-9 CAS 71-43-2 CAS 75-05-8 Beltsville(Maryland) Furan/tetrahydro Dioxanes
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Hazard Evaluations and Technical Assistance Branch.
Document Type	Technical Report
NTIS Issue Number	198011