National Emission Standards for Hazardous Air Pollutants: Off-Site Waste and Recovery Operations

This action proposes amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Off-Site Waste and Recovery Operations (OSWRO). The proposed amendments address an issue related to monitoring pressure relief devices (PRDs) on containers. This issue was raised in a petition for reconsideration of the amendments to the OSWRO NESHAP finalized in 2015 based on the residual risk and technology review (RTR). Among other things, the 2015 amendments established additional monitoring requirements for all PRDs, including PRDs on containers. For PRDs on containers, these monitoring requirements were in addition to the inspection and monitoring requirements for containers and their closure devices, which include PRDs that were already required by the OSWRO NESHAP. This proposed action would remove the additional monitoring requirements for PRDs on containers that resulted from the 2015 amendments because we have determined that they are not necessary. This action, if finalized as proposed, would not substantially change the level of environmental protection provided under the OSWRO NESHAP. The proposed amendments would reduce capital costs related to compliance to this industry by $28 million compared to the current rule. Total annualized costs, at an interest rate of 7 percent, would be reduced by $4.2 million per year. These costs are associated with a present value of $39 million dollars, discounted at 7 percent over 15 years.