Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 25 - STATE WATER CONTROL BOARD › Chapter 151 - VIRGINIA POLLUTANT DISCHARGE ELIMINATION SYSTEM (VPDES) GENERAL PERMIT REGULATION FOR DISCHARGES OF STORMWATER ASSOCIATED WITH INDUSTRIAL ACTIVITY › Part IV - Sector Specific Permit Requirements › Section 9VAC25-151-320 - Sector Y - Rubber, miscellaneous plastic products, and miscellaneous manufacturing industries

Current through Register Vol. 40, No. 24, July 15, 2024
A. Discharges
				  covered under this section. The requirements listed under this section apply to
				  stormwater discharges associated with industrial activity from rubber and
				  miscellaneous plastic products manufacturing facilities, SIC Codes 3011, 3021,
				  3052, 3053, 3061, and 3069.
B.
				  SWPPP requirements. In addition to the requirements of Part III, the SWPPP
				  shall include, at a minimum, the following items:
1. Site description. Summary of potential
				  pollutant sources. Rubber manufacturing facilities shall review the use of zinc
				  at the facility and the possible pathways through which zinc may be discharged
				  in stormwater runoff.
2. Stormwater
				  controls.
a. Controls for rubber
				  manufacturers. Rubber manufacturing facilities shall describe and implement
				  specific controls to minimize the discharge of zinc in stormwater discharges
				  from the facility. Listed are possible sources of zinc. These shall be reviewed
				  and the accompanying control measures or their equivalents shall be documented
				  in the SWPPP. Also, some general control measure options to consider include:
				  using chemicals that are purchased in pre-weighed, sealed polyethylene bags;
				  storing materials that are in use in sealable containers; ensuring an airspace
				  between the container and the cover to minimize "puffing" losses when the
				  container is opened; and using automatic dispensing and weighing equipment.
(1) Zinc bags. All permittees shall review
				  the handling and storage of zinc bags at their facilities. Following are some
				  control measure options: employee training regarding the handling and storage
				  of zinc bags; indoor storage of zinc bags; cleanup of zinc spills without
				  washing the zinc into the storm drain; and the use of 2,500-pound sacks of zinc
				  rather than 50-pound to 100-pound sacks.
(2) Dumpsters. The permittee shall minimize
				  discharges of zinc from dumpsters. Following are some control measure options:
				  provide a cover for the dumpster; move the dumpster to an indoor location; or
				  provide a lining for the dumpster.
(3) Dust collectors or baghouses. Permittees
				  shall minimize contributions of zinc to stormwater from dust collectors and
				  baghouses. Improperly operating dust collectors and baghouses shall be replaced
				  or repaired as appropriate.
(4)
				  Grinding operations. Permittees shall minimize contamination of stormwater as a
				  result of dust generation from rubber grinding operations. One control measure
				  option is to install a dust collection system.
(5) Zinc stearate coating operations.
				  Permittees shall minimize the potential for stormwater contamination from drips
				  and spills of zinc stearate slurry that may be released to the storm drain. One
				  control measure option is to use alternative compounds to zinc
				  stearate.
b. Controls for
				  plastic products manufacturers. Plastic products manufacturing facilities shall
				  describe and implement specific controls to minimize the discharge of plastic
				  resin pellets in stormwater discharges from the facility. The following control
				  measures or their equivalents shall be documented in the SWPPP: minimizing
				  spills; cleaning up of spills immediately and thoroughly; sweeping thoroughly;
				  pellet capturing; employee education; and disposal
				  precautions.