Text For Citation: 01 Item/Group: 016C Hazard: CHEMNEP

29 CFR 1910.1026(f)(1)(ii): Where painting of aircraft or large aircraft parts was performed in the aerospace industry, the employer did not use engineering and work practice controls to reduce and maintain employee exposure to chromium (VI) to or below 0.025 mg/m3: (a)Hill Air Force Base, at 7290 Weiner Street, Hill Air Force Base, UT: On 3/2/11, where painting of aircraft or large aircraft parts was performed in the aerospace industry, Hill Air Force Base did not use engineering and work practice controls to reduce and maintain employee exposure to chromium (VI) to or below 0.025 mg/m3. One employee painted aircraft in Building 220. The primer contained strontium chromate. This process generated chromium (VI) aerosol. On 3/2/11 one employee was exposed to chromium (VI) at a concentration greater than the 8 hour Time Weighted Average (TWA) Permissible Exposure Limit (PEL) of 0.005 mg/m3. The employee was exposed to chromium (VI) at a concentration of 0.1382 mg/m3 as an 8 hour TWA. This is 27.64 times the PEL. Air monitoring was conducted for 245 minutes. Abatement Note: Abatement certification and documentation are required for this item (See enclosed "Sample Abatement-Certification Letter"). Abatement Note: Feasible engineering controls include, but are not limited to: 1.Installation of local exhaust ventilation at the point of generation of the air contaminant. 2.Substitution of primer containing strontium chromate with non-hexavalent chromium containing primer. 3.Evaluate large spray booths. Determine capture velocities at points of operation. Modify booth ventilation if capture velocity is insufficient to capture aerosol. Abatement Note: Abatement of this item will normally be multi-step as follows: 1.Effective respiratory protection shall be provided and used by exposed employees as an interim protective measure until feasible engineering and/or administrative controls can be implemented or whenever such controls fail to reduce employee exposure to within exposure limits. STEP 1 ABATEMENT DATE (15 DAYS): August 15, 2011 2.Submit to the Area Director a written detailed plan of abatement outlining a schedule for the implementation of engineering and /or administrative measures to control employee exposures to the hazardous substance referenced in this citation. The plan shall include, at a minimum, target dates for the following actions which should be consistent with the dates required by this citation: a.Evaluation of the extent and location of the hazard source;b.Evaluation of control measure options; c.Selection of optimum control measures; d.Determination of control measure design; e.Ordering and delivery of equipment; f.Installation of control measures; g.Training of employees in proper operation and maintenance of newly implemented control measures; and h.Assurance of the effective performance of control measures. All proposed control measures shall be evaluated for each particular use by a competent Industrial Hygienist or other technically qualified person. Thirty day progress reports are required during the abatement period. The progress report must identify the action taken to achieve abatement and the date the action was taken. STEP 2 ABATEMENT DATE (60 DAYS): September 29, 2011 3.Abatement will be completed by the implementation of feasible engineering and/or administrative controls and upon verification of their effectiveness in achieving compliance. STEP 3 ABATEMENT DATE (120 DAYS): November 28, 2011