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• ISW Digital Document Library
  [[File:Industrial-stormwater.jpg|500 px|thumb|right|alt=industrial stormwater discharges from ...ocuments that are being used to implement best management practices (BMPs) or protect stormwater from pollutants. All documents in the ISW are free for a
  6 KB (878 words) - 00:35, 23 January 2023
• Liners for stormwater management
  ...actice. Source: [https://www.pwdplanreview.org/manual/chapter-4/4.12-outlet-controls Philadelphia Water (PWD) Stormwater Management Guidance Manual].</f ...ith less than three (3) feet of separation from seasonally saturated soils or from bedrock are constructed with an impermeable liner;
  10 KB (1,408 words) - 01:18, 7 December 2022
• Stormwater infiltration at permitted industrial stormwater facilities
  ...flooding, may help replenish groundwater supplies, and can be an effective treatment practice. This page provides a discussion of infiltration at industrial sto If an industrial site fails benchmark monitoring, treatment may be required. If site conditions are appropriate for infiltration, it is
  9 KB (1,388 words) - 23:40, 30 January 2023
• When infiltration is not authorized under a stormwater permit
  ...sing the mapping tool], go to the site of interest by magnifying the image or entering an address. In this example, six sites are shown. Make sure the Le ...the infiltration system to the elevation of the seasonally saturated soils or the top of bedrock;
  13 KB (1,914 words) - 11:24, 26 January 2023
• Is My Facility Required to Obtain the Industrial Stormwater General Permit
  ...ne a facility’s primary Standard Industrial Classification code (SIC code) or narrative activity and related common questions. ...n Appendix D (page 148) of the permit. Listed industries must get a permit or certify that nothing is exposed to stormwater.
  50 KB (6,841 words) - 15:57, 5 December 2022