9VAC25-151-130. Sector E - Glass, clay, cement, concrete, and gypsum products.
A. Discharges covered under this section. The requirements listed under this section apply to stormwater discharges associated with industrial activity from facilities generally classified under SIC Major Group 32 that are engaged in either manufacturing the following products or performing the following activities: flat, pressed, or blown glass or glass containers; hydraulic cement; clay products including tile and brick; pottery and porcelain electrical supplies; gypsum products; nonclay refractories; minerals and earths, ground or otherwise treated; lime manufacturing; cut stone and stone products; asbestos products; and mineral wool and mineral wool insulation products.
Concrete block and brick facilities (SIC Code 3271), concrete products facilities, except block and brick (SIC Code 3272), and ready-mixed concrete facilities (SIC Code 3273) are not covered by this permit.
B. Stormwater pollution prevention plan requirements. In addition to the requirements of Part III, the plan shall include, at a minimum, the following items:
1. Site description and site map. The site map shall identify the locations of the following, if applicable: bag house or other dust control device; recycle or sedimentation pond, clarifier or other device used for the treatment of process wastewater and the areas that drain to the treatment device.
2. Stormwater controls. Good housekeeping.
a. Facilities shall prevent or minimize the discharge of: spilled cement; aggregate (including sand or gravel); kiln dust; fly ash; settled dust; and other significant materials in stormwater from paved portions of the site that are exposed to stormwater. Measures used to minimize the presence of these materials may include regular sweeping, or other equivalent measures. The plan shall indicate the frequency of sweeping or equivalent measures. The frequency shall be determined based upon consideration of the amount of industrial activity occurring in the area and frequency of precipitation, but shall not be less than once per week if cement, aggregate, kiln dust; fly ash, or settled dust are being handled or processed.
b. Facilities shall prevent the exposure of fine granular solids (such as cement, fly ash, kiln dust, etc.) to stormwater. Where practicable, these materials shall be stored in enclosed silos or hoppers, buildings, or under other covering.
C. Numeric effluent limitations. In addition to the numeric effluent limitations described by Part I A 1 c, the following limitations shall be met by existing and new facilities: cement manufacturing facility, material storage runoff. Any discharge composed of runoff that derives from the storage of materials including raw materials, intermediate products, finished products, and waste materials that are used in or derived from the manufacture of cement shall not exceed the limitations in Table 130-1. Runoff from the storage piles shall not be diluted with other stormwater runoff or flows to meet these limitations. Any untreated overflow from facilities designed, constructed and operated to treat the volume of material storage pile runoff that is associated with a 10-year, 24-hour rainfall event shall not be subject to the TSS or pH limitations. Facilities subject to these numeric effluent limitations shall be in compliance with these limits upon commencement of coverage and for the entire term of this permit.
D. Benchmark monitoring and reporting requirements. Clay product manufacturers (SIC 3251-3259, SIC 3261-3269) and lime and gypsum product manufacturers (SIC 3274, 3275) are required to monitor their stormwater discharges for the pollutants of concern listed in Table 130-2.
§ 62.1-44.15 of the Code of Virginia; § 402 of the federal Clean Water Act; 40 CFR Parts 122, 123, and 124.
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.