9VAC25-151-350: Sector AB - Transportation equipment, industrial, or commercial machinery

A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from transportation equipment and industrial or commercial machinery manufacturing facilities commonly described by SIC Codes 3511-3599, except SIC Codes 3571-3579.

B. SWPPP requirements. In addition to the requirements of Part III, the SWPPP shall include, at a minimum, the following item:

Site description. The site map shall identify where any of the following may be exposed to precipitation or surface runoff: vents and stacks from metal processing and similar operations.

C. Benchmark monitoring and reporting requirements. Transportation equipment manufacturing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 350.

Table 350

Sector AB – Benchmark Monitoring Requirements

Pollutants of Concern

Benchmark Concentration

Transportation equipment manufacturing facilities (SIC Codes 3511-3599 except SIC Codes 3571-3579)

Total Petroleum Hydrocarbons (TPH)*

15.0 mg/L

Total Suspended Solids (TSS)

100 mg/L

Total Recoverable Copper

13 μg/L

Total Recoverable Zinc

120 μg/L

*Total Petroleum Hydrocarbons (TPH) is the sum of individual gasoline range organics and diesel range organics (TPH-GRO and TPH-DRO) to be measured by EPA SW 846 Method 8015 for gasoline and diesel range organics, or by EPA SW 846 Methods 8260 Extended and 8270 Extended.