Source: http://www4.law.cornell.edu/cfr/text/40/440.131
Timestamp: 2013-12-11 11:47:51
Document Index: 681250184

Matched Legal Cases: ['art 440', '§ 440', 'art 440', 'art 440', 'art 440', 'art 440', 'art 440', '§ 122']

40 CFR 440.131 - General provisions. | Title 40 - Protection of Environment | Code of Federal Regulations | LII / Legal Information Institute
CFR › Title 40 › Chapter I › Subchapter N › Part 440 › Subpart L › Section 440.131	prev | next
40 CFR 440.131 - General provisions.
§ 440.131
(a) Combined waste streams.
In the event that waste streams from various subparts or segments of subparts in part 440 are combined for treatment and discharge, the quantity and concentration of each pollutant or pollutant property in the combined discharge that is subject to effluent limitations shall not exceed the quantity and concentration of each pollutant or pollutant property that could have been discharged had each waste stream been treated separately. In addition, the discharge flow from the combined discharge shall not exceed the volume that could have been discharged had each waste stream been treated separately.
(b) Storm exemption for facilities permitted to discharge.
If, as a result of precipitation or snowmelt, a source with an allowable discharge under 40 CFR part 440 has an overflow or excess discharge of effluent which does not meet the limitations of 40 CFR part 440, the source may qualify for an exemption from such limitations with respect to such discharge if the following conditions are met:
(c) Storm exemption for facilities not permitted to discharge.
If, as a result of precipitation (rainfall or snowmelt), a source which is not permitted to discharge under 40 CFR part 440, has an overflow or discharge which violates the limitations of 40 CFR part 440, the source may qualify for an exemption from such limitations with respect to such discharge if the following conditions are met:
(3) The facility complies with the notification requirements of § 122.60(g) and (h). The storm exemption is designed to provide an affirmative defense to an enforcement action. Therefore, the operator has the burden of demonstrating to the appropriate authority that the above conditions have been met.
(d) pH adjustment.
(e) Groundwater infiltration provision.
In the event a new source subject to a no discharge requirement can demonstrate that groundwater infiltration contributes a substantial amount of water to the tailing impoundment or wastewater holding facility, the permitting authority may allow the discharge of a volume of water equivalent to the amount of groundwater infiltration. This discharge shall be subject to the limitations for mine drainage applicable to the new source subcategory.