SECTION 380:50-11-1. Daily air monitoring requirements

  Daily air monitoring requirements shall consist of the following:

(1)   Personal monitoring.

(A)   One (1) personal air sample for every four workers, but a minimum of two (2) personal air samples collected from within the work area, and a minimum of two (2) personal air samples per abatement crew, by a method to be deter mined by the Commissioner. One (1) of these personal air samples must be from a worker collecting and bagging asbestos, and one must be from a worker in the loadout area, where applicable.

(B)   All personal monitoring results shall be reported with the type of respirator worn by the worker and the license number of each worker.

(C)   The exposure to airborne fiber concentrations by workers on abatement projects shall be limited to a maximum value of 0.01 fibers per cubic centimeter within the assigned respirator, as determined by dividing the airborne fiber concentration by the respirator protection factor.

(2)   Inside area monitoring.

(A)   A minimum of one (1) area sample in the vicinity of each abatement crew.

(B)   One (1) sample from the load-out area during load-out activities.

(3)   Outside area monitoring.

(A)   Minimum of, but not limited to, one (1) air sample from each independent exit area collected directly outside and adjacent to the work area as designated in the project design.

(B)   One (1) sample per shift from the exhaust of each negative air machine, or common exhaust duct of multiple machines, which discharges from the containment area. Such discharge shall not be permitted to exceed 0.01 fibers/cc.

(C)   One (1) sample immediately outside the clean room. Air monitoring in the clean-room of the decontamination system is not a requirement of these Rules.

(D)   Minimum of, not limited to, one (1) additional air sample as designated in the project design.

(4)   Calibration shall be accomplished prior to, and at the conclusion of sampling. The average flow rate shall be utilized for all calculations of airborne concentrations relating to asbestos.

(A)   All non-primary type flow measuring devices shall be routinely calibrated by using a primary standard once per month, and shall be accompanied with calibration records and/or charts which shall contain:

(i)   Date of calibration.

(ii)   Individual accomplishing calibration.

(iii)   Identification of referenced primary standard including serial number.

(iv)   Number of calibration points with accompanying table reflecting indicated flow versus actual flow.

(B)   Floating ball type flow meters shall be non-adjustable, or shall be sealed and the seal must not be broken. A wax ring is an appropriate seal.

(5)   No airborne fiber count shall be reported to the Department of Labor or any other entity as a numerical value if the count is less than the minimum level of detectability for the method used for analysis. The value shall be reported as less than the detectable limit, with that limit so stated.

[Source: Amended at 9 Ok Reg 3309, eff 7-27-92; Amended at 18 Ok Reg 3523, eff 9-14-01; Amended at 27 Ok Reg 1887, eff 7-1-10]