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Health hazard evaluation report: HETA-85-289-1738, Page Belcher Federal Building, Tulsa, Oklahoma.

Authors
Kominsky JR
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 85-289-1738, 1986 Oct; :1-100
Link
NIOSHTIC No.
00167000
Abstract
A request was made by the United States Postal Service to assess potential contamination from a soot producing electrical transformer malfunction at the Page Belcher Federal Building (SIC-9199), located in Tulsa, Oklahoma. The building has 27 separate air handling units and 77 interior air supply zones, plus one to three perimeter air supply zones for each of the four floors and two mezzanines. One air handling unit may serve from one to nine distribution zones. Low levels of airborne polychlorinated biphenyls (PCBs) were found throughout the building. There appeared to be no specific location within the building for a concentration of these chemicals. The vapor phase of the contaminant was enriched with lower chlorinated isomers relative to a source mixture on surfaces. The surface concentrations of PCBs and tetrachlorodibenzo-p-dioxin (1746016) (TCDD) equivalents, as measured in the primary occupancy areas of the building, were below respective surface guidelines for all samples, with the exception of two. Seven of the air handling units obtain their fresh makeup air through an outside grille located on the west side of the building directly above the transformer vault's exterior exhaust vent. The PCB surface concentrations in these seven air handling systems were significantly higher than those in the other systems for the building. PCB concentrations on workplace surfaces in areas serviced by these seven systems were also significantly higher than elsewhere in the building. Recommendations are offered for decontaminating the building and its ventilation system and for instituting a medical surveillance program.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; HETA-85-289-1738; Hazard-Confirmed; NIOSH-Technical-Assistance-Report; Region-6; Chlorinated-hydrocarbons; Office-workers; Furans; Dioxins
CAS No.
1746-01-6
Publication Date
19861001
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1987
NTIS Accession No.
PB87-183521
NTIS Price
A06
Identifying No.
HETA-85-289-1738
NIOSH Division
DSHEFS
SIC Code
9199
Source Name
National Institute for Occupational Safety and Health
State
OK; OH
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division