Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	51
453	JANITORS AND CLEANERS	807	36
455	PEST CONTROL OCCUPATIONS	3,732	574
486	GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM	730	365
696	STATIONARY ENGINEERS	282
TOTAL		5,603	975

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.