Section 325.60151. Construction air contaminants; scope; applicability; replacement of

O.H.   rules.

(1) An employer shall ensure that employee exposures to inhalation, ingestion, skin absorption, or contact with any material or substance at a concentration above those specified in the "Threshold Limit Values of Airborne Contaminants for 1970" of the American Conference of Governmental Industrial Hygienists, as listed in R 325.60154 to R 325.60161, are avoided.

(2)   To achieve compliance with subrule (1) of this rule, an employer shall ensure that administrative or engineering controls are implemented whenever feasible. If administrative or engineering controls are not feasible to achieve full compliance, then protective equipment or other protective measures shall be used to keep the exposure of employees to air contaminants within the limits prescribed in this rule. Any equipment and technical measures used for this purpose shall first be approved for each particular use by a competent industrial hygienist or other technically qualified person. Respirators shall be used in a manner that is in compliance with occupational health standard part 451 “Respiratory Protection,” R 325.60051 to R 325.60052.

(3)     Occupational health standard part 302 “Vinyl Chloride,” R 325.51401 to R 325.51414, applies to the exposure of every employee to vinyl chloride in every employment and place of employment covered by these rules in place of any different standard on exposure to vinyl chloride that would otherwise be applicable by virtue of subrule (1) of this rule.

(4)   The “Threshold Limit Values (TLV) of the American Conference of Governmental Industrial Hygienists (A.C.G.I.H.) for 1970” appear in R 325.60153 to R 325.60161. The Threshold Limit Values identified in these rules as Maximum Allowable Concentrations (MAC) are specified in the rules that follow.

(5)   These rules do not apply to the following types of employment:

(a)   ) Agriculture.

(b)   Domestic.

(c)   ) Mining.

(d)  General industry work.

Exposure to air contaminants in general industry work is covered by occupational health standard part 301 “Air Contaminants for General Industry,” R 325.51101 to R 325.51108.

(6)   These rules replace O.H. rule 6201.

History: 2002 AACS; 2013 AACS.