1. A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities engaged in the following activities: manufacturing asphalt paving and roofing materials, including those facilities commonly identified by SIC Codes 2951 and 2952; portable asphalt plants (also commonly identified by SIC Code 2951); and manufacturing miscellaneous products of petroleum and coal, including those facilities classified as SIC Code 2992 and 2999.

2. B. Limitations on coverage. The following stormwater discharges associated with industrial activity are not authorized by this section of the permit:

   1. 1. Stormwater discharges from petroleum refining facilities, including those that manufacture asphalt or asphalt products, that are subject to effluent limitation guidelines for the Petroleum Refining Point Source Category (40 CFR 419);
   2. 2. Stormwater discharges from oil recycling facilities; and
   3. 3. Stormwater discharges associated with fats and oils rendering.

3. C. Numeric effluent limitations. In addition to the numeric effluent limitations listed in Part I A c, discharges from areas where production of asphalt paving and roofing emulsions occurs may not exceed the limitations in Table 120-1.

   Table 120-1 Sector D – Numeric Effluent Limitations
   Parameter	Effluent Limitations
   Daily Maximum	30-day Average
   Discharges from areas where production of asphalt paving and roofing emulsions occurs (SIC 2951, 2952)
   Total Suspended Solids (TSS)	23 mg/L	15 mg/L
   Oil and Grease	15 mg/L	10 mg/L
   pH	6.0 - 9.0 s.u.

4. D. Benchmark monitoring and reporting requirements. Asphalt paving and roofing materials manufacturing facilities are required to monitor their stormwater discharges for the pollutants of concern listed in Table 120-2.

   Table 120-2 Sector D – Benchmark Monitoring Requirements
   Pollutants of Concern	Benchmark Concentration
   Asphalt Paving and Roofing Materials (SIC 2951, 2952)
   Total Suspended Solids (TSS)	100 mg/L

Statutory Authority

§ 62.1-44.15 of the Code of Virginia; § 402 of the federal Clean Water Act; 40 CFR Parts 122, 123, and 124.

Historical Notes

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; Volume 30, Issue 11, eff. July 1, 2014.