(i) Protection in the workplace. Requirements as specified in § 721.63(a)(1), (a)(2)(i), (a)(2)(ii) (clothing that covers other exposed areas of the arms, legs, and torso), (a)(3), (a)(4) (National Institute for Occupational Safety and Health (NIOSH)-certified air-purifying, tight-fitting full-face respirator equipped with N100 cartridges), (a)(6)(i), and (c). When determining which persons are reasonably likely to be exposed as required for § 721.63(a)(1) and (a)(4), engineering control measures (e.g., enclosure or confinement of the operation, general and local ventilation) or administrative control measures (e.g., workplace policies and procedures) shall be considered and implemented to prevent exposure, where feasible.

(ii) Industrial, commercial, and consumer activities. Requirements as specified in § 721.80(k) (a significant new use is any use other than as a component for a conductive coating using the PMN substance in a dispersion or ink, and additive in resins/thermoplastics/elastomers for mechanical reinforcement.) and (q).

(iii) Release to water. Requirements as specified in § 721.90(a)(1), (b)(1), and (c)(1), except for water releases determined by monitoring the concentration of the PMN substance in waste water effluent according to a monitoring procedure approved for such purpose by EPA and when the concentration of the PMN substance does not exceed 1 part per billion (ppb). EPA will review and act on written requests to approve monitoring procedures within 90 days after such requests are received. EPA will inform submitters of the disposition of such requests in writing, and will explain the reasons therefore when they are denied.