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.
C.
Benchmark monitoring and reporting requirements. Rubber product manufacturing
facilities are required to monitor their stormwater discharges for the
pollutants of concern listed in Table 320.
Table 320
Sector Y - Benchmark Monitoring
Requirements
|
Pollutants of Concern
|
Benchmark Concentration
|
Tires and Inner Tubes; Rubber Footwear; Gaskets,
Packing and Sealing Devices; Rubber Hose and Belting; and Fabricated Rubber
Products, Not Elsewhere Classified (SIC Codes 3011, 3021, 3052, 3053, 3061, and
3069).
|
Total Recoverable Zinc
|
120 µg/L
|
Notes
9 Va.
Admin. Code §
25-151-320
Derived
from Virginia Register Volume 15, Issue 9, eff. June 30, 1999; amended,
Virginia Register Volume 20, Issue 16, eff. July 1, 2004; Volume 25, Issue 19,
eff. June 24, 2009; Amended, Virginia Register Volume 30, Issue 11, eff. July
1, 2014; Amended,
Virginia
Register Volume 35, Issue 19, eff.
7/1/2019; Amended,
Virginia
Register Volume 40, Issue 15, eff.
7/1/2024.
Statutory Authority: §
62.1-44.15 of the Code of
Virginia; § 402 of the Clean Water Act; 40 CFR Parts 122, 123, and
124.