Improving the EPA Multi-Sector General Permit for Industrial Stormwater Discharges (2019) / Chapter Skim
Currently Skimming:
1 Introduction
1 Introduction
Pages 9-20
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 9... ...
Industrial stormwater is derived from The Clean Water Act requires that effluent limits precipitation and/or runoff that comes in contact with be established to meet state-determined water quality industrial manufacturing, processing, storage, or mate- standards. State water quality standards include desigrial overburden and then runs off site and enters drain- nated uses, which identify the uses or goals of each water age systems or streams.
|
From page 10... ...
It was subsequently Industrial Stormwater Permitting revised in 2000, 2008, and 2015, and the current MSGP extends through 2020. The MSGP provides permit Although industrial stormwater discharges were coverage through submittal of a "notice of intent," selfincluded in some individual NPDES permits in the 1 Water Quality Act of 1987, Pub.
|
From page 11... ...
More specific to adopt their own industrial stormwater general perrequirements have been developed locally in situations mits. Although some states do not venture beyond the where industrial stormwater discharges flow to water requirements of the MSGP, others tailor their permit bodies that do not meet established water quality cri- to address unique geographic conditions (see Appenteria and standards.
|
From page 12... ...
Although SCMs vary by industry, they can broadly be grouped into the following categories: • Pollution prevention -- efforts to use only materials that are nontoxic, nonhazardous, and nonpolluting; • ood housekeeping -- practices to prevent and contain spills and keep contaminants out of stormwater discharges G through orderly facilities; • Minimizing exposure -- efforts to move indoors or cover industrial activities and chemical storage; • Managing runoff -- diverting stormwater runoff from nonindustrial areas away from industrial areas; • Erosion and sediment control, such as mulching or sodding; and • Structural pollution treatment. Nonstructural practices typically are selected first because they are lower cost to operate and maintain.
|
From page 13... ...
Postal and reconsideration of SCM selection and implemen Service transportation facilities Sector Q: Water transportation facilities with tation. Monitoring results can also be used to quantify vehicle maintenance shops and/or equipment improvement in stormwater quality on site based on cleaning operations Sector R: Ship and boat building or repair yards implementation of stormwater control measures and Sector S: Vehicle maintenance areas, equipment to identify pollutants not being successfully controlled.
|
From page 14... ...
EPA compiled and a potential to discharge pollutants at concentrations of analyzed the data by industry sector, and where indusconcern. For the most part, EPA determined which tries were found to contain a wide range of industrial industry sectors required benchmark monitoring using activities or potential pollutant sources, the industries industry-supplied baseline data during a 1992 group were subdivided further and the data compiled on a application process.
|
From page 15... ...
, zinc A2 Wood preserving Arsenic, copper A3 Log storage and handling TSS A4 Hardwood and wood product facilities; sawmills COD, TSS B1 Paperboard mills COD C1 Agricultural chemicals Nitrate plus nitrite; lead, iron, zinc, phosphorus C2 Industrial inorganic chemicals Aluminum, iron, nitrate plus nitrite C3 Soaps, detergents, cosmetics, and perfumes Nitrate plus nitrite, zinc C4 Plastics, synthetics, and resins Zinc C5 Industrial organic chemicals, paints, lacquers, and None pharmaceuticals D1 Asphalt paving and roofing materials TSS D2 Miscellaneous products of petroleum and coal None E1 Clay product manufacturers Aluminum E2 Concrete and gypsum product manufacturers TSS, iron E3 Glass and stone products None F1 Steelworks, blast furnaces, and rolling and finishing mills Aluminum, zinc F2 Iron and steel foundries Aluminum, TSS, copper, iron, zinc F3 Rolling, drawing, and extruding of nonferrous metals Copper, zinc F4 Nonferrous foundries Copper, zinc F5 Smelting and refining of nonferrous metals, miscella- None neous primary metal products G1 Active copper ore mining and dressing facilities TSS, nitrate plus nitrite, COD G2 Active metal mining facilities TSS, turbidity, pH, hardness, antimony, arsenic, beryllium, cadmium, copper, iron, lead, mercury, nickel, selenium, silver, zinc H Coal mines and related areas Aluminum, iron, TSS I Oil and gas extraction facilities None J1 Sand and gravel mining Nitrate plus nitrite, TSS J2 Dimension and crushed stone and nonmetallic minerals TSS J3 Clay, chemical, and fertilizer mineral mining None K1 Hazardous waste treatment, storage, or disposal facilities Ammonia, magnesium, COD, arsenic, cadmium, cyanide, lead, mercury, selenium, silver L1 Landfills, land application sites, and open dumps TSS L2 L1 except municipal solid waste landfill areas closed Iron continued
|
From page 16... ...
(BOD5) , COD, ammonia, pH T Treatment works None U1 Grain mill products TSS U2 Fats and oils products BOD5, COD, nitrate plus nitrite, TSS U3 Meat, dairy, and other food products and beverages None V Textile mills, apparel, and other fabric products None W Furniture and fixture manufacturing facilities None X Printing and publishing facilities None Y1 Rubber products manufacturing Zinc Y2 Miscellaneous plastic products and manufacturing None industries Z Leather tanning and finishing facilities None AA1 Fabricated metal products, except coating Aluminum, iron, zinc, nitrate plus nitrite AA2 Fabricated metal coating and engraving None AB Transportation equipment, industrial, or commercial None machinery manufacturing facilities AC Electronic and electrical equipment and components, None photographic, and optical goods manufacturing facilities The benchmarks were established as "the pol- national or state water quality criteria, using EPA lutant concentrations above which EPA determined acute criteria where they exist and chronic criteria represents a level of concern.
|
From page 17... ...
times a factor of 3.18" Turbidity 50 NTU "Combination of simplified variations on Stormwater Effects Handbook, Burton and Pitt, 2001, and water quality standards in Idaho" Total aluminum 750 μg/L Freshwater Acute Aquatic Life Criteria (EPA, 2006c) Total antimony 640 μg/L Water Quality Criteria Human Health for Consumption of Organism (EPA, 2006b)
|
From page 18... ...
Some stakeholders question whether action is undertaken and exceedances persist. Instead, benchmark exceedances serve as useful indicators of an exceedance necessitates that the facility operator the effectiveness of implementation of stormwater investigate stormwater control measures and make control measures or potential water quality problems.
|
From page 19... ...
available for establishing such standards as The committee's report and its conclusions and both technology-based and water quality-based recommendations are based on a review of relevant numeric effluent limitations? technical literature, briefings, and discussions at its five • Could such retention standards provide an effec- in-person meetings and three web conferences, and the tive and scientifically defensible approach for experience and knowledge of the committee members establishing objective and transparent effluent in their fields of expertise.
|
From page 20... ...
within 30 days.... In addition, the operator does not have to install structural source controls or treatment controls if it adequately demonstrates to EPA within 30 days of the Tier 3 trigger occurrence that its discharge does not result in any exceedance of water quality standards....
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.