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26.20.21.00.htm 26.20.21.00. Title 26 DEPARTMENT OF THE ENVIRONMENT Subtitle 20 SURFACE COAL MINING AND RECLAMATION UNDER FEDERALLY APPROVED PROGRAM Chapter 21 Ponds and Sediment Control Measures Authority: Environment Article, §15-503, Annotated Code of Maryland
26.20.21.01.htm 26.20.21.01. 01 General Requirements.. A. Surface mining activities shall be planned and conducted to minimize changes to the prevailing hydrologic balance in both the mine plan and adjacent areas, in order to prevent long-term adverse changes in that balance that could result from those activities.B. Changes in the depth to ground water, in water quality and quantity, and in the location of surface water drainage channels shall be minimized so that the approved postmining land use of the permit
26.20.21.01-1.htm 26.20.21.01-1. 01-1 Incorporation by Reference.. A. In this chapter, the following document is incorporated by reference.. B. Document Incorporated. U.S. Department of Agriculture, Soil Conservation Service Technical Release No. 60 (210-VI-TR60, October, 1985) "Earth Dams and Reservoirs" (TR-60)
26.20.21.02.htm 26.20.21.02. 02 Water Quality Standards and Effluent Limitations.. A. If drainage from the disturbed areas is mixing with drainage from other areas not disturbed by current surface coal mining and reclamation operations, the permittee shall achieve the effluent limitation set forth below for all the mixed drainage when it leaves the permit area.B. Discharges of water from areas disturbed by surface mining shall be made in compliance with applicable State laws and regulations, the federal Clea
26.20.21.03.htm 26.20.21.03. 03 Diversions and Conveyance of Overland Flow and Shallow Ground Water Flow, and Ephemeral Streams.. A. Overland flow, including flow through litter, and shallow ground water flow from undisturbed areas, and flow in ephemeral streams, may be diverted away from disturbed areas by means of temporary or permanent diversions, if required or approved by the Bureau as necessary to minimize erosion, to reduce the volume of water to be treated, and to prevent or remove water from
26.20.21.04.htm 26.20.21.04. 04 Stream Channel Diversions.. A. Flow from perennial and intermittent streams within the permit area may be diverted, if the diversions:1) Are approved by the Bureau after making a finding that the diversion will not adversely affect the water quantity and quality and related environmental resources of the stream;2) Comply with other requirements of this regulation; and. 3) Comply with local, State, and federal statutes and regulations.. B. When streamflow is all
26.20.21.05.htm 26.20.21.05. 05 Sediment Control Measures.. A. Appropriate sediment control measures shall be designed, constructed, and maintained using the best technology currently available to:1) Prevent, to the extent possible, additional contributions of sediment to streamflow or to runoff outside the permit area;2) Meet the more stringent of applicable State or federal effluent limitations; and. 3) Minimize erosion to the extent possible.. B. Sediment control measures include practices car
26.20.21.06.htm 26.20.21.06. 06 Siltation Structures.. A. Exemptions. Exemptions to the requirements of this regulation may be granted if the:. 1) Disturbed drainage area within the total disturbed area is small; and. 2) Operator demonstrates that siltation structures and alternate sediment control measures are not necessary to meet the effluent limitations in this chapter and the applicable State and federal water quality standards for reB. In this regulation, the following terms have the meanings indicated..
26.20.21.07.htm 26.20.21.07. 07 Discharge Structures.. Discharge from sedimentation ponds, permanent and temporary impoundments, coal processing waste dams and embankments, and diversions shall be controlled, by energy dissipators, riprap channels, and other devices, where necessary, to reduce erosion, to prevent deepening or enlargement of stream channels, and to minimize disturbance of the hydrologic balance. Discharge structures shall be designed according to standard engineering-design procedures.
26.20.21.08.htm 26.20.21.08. 08 Impoundments.. A. General Requirements. The requirements of this section apply to both temporary and permanent impoundments. Impoundments shall be designed and constructed to ensure:1) Compliance with USDA, Natural Resources Conservation Service, Maryland Conservation Practice, Standard Pond Code 378 (January 2000) as incorporated by reference in COMAR 26.17.02.01-1B(2)2) Compliance with requirements of COMAR 26.17.04.05 if the embankment is more than 15 feet in heigh
26.20.21.09.htm 26.20.21.09. 09 Inspection and Certification of Impoundments.. A. Construction Inspections.. 1) A qualified professional engineer or other qualified specialist, under the direction of the professional engineer, shall inspect the impoundment. The professional engineer or specialist shall be experienced in the construction of impoundments. These inspections shall be made:a) At appropriate times during construction, including:. i) Site preparation,. ii) Construction of the cut-off trench,.
26.20.21.10.htm 26.20.21.10. 10 Permanent and Temporary Impoundments.. A. Permanent Impoundments. A permanent impoundment of water may be created, if authorized by the Department in the approved permit, based upon a demonstration that the:1) Size and configuration of the impoundment will be adequate for its intended purposes;. 2) Quality of the impounded water will be suitable on a permanent basis for its intended use and after reclamation will meet applicable State and federal water quality standards;
26.20.21.11.htm 26.20.21.11. 11 Postmining Rehabilitation of Sedimentation Ponds, Diversions, Impoundments, and Treatment Facilities.Before final bond release of the permit area, the permittee shall renovate all permanent sedimentation ponds, diversions, impoundments, and treatment facilities to meet criteria specified in the detailed design plan of the permanent structures and impoundments.
26.20.21.9999.htm 26.20.21.9999. Administrative History Effective date:. Regulations .01―09 were previously codified as COMAR 08.13.09.24A―I, respectively. Recodification occurred in April, 1993. For a history of these regulations before April, 1993, see "Administrative History of COMAR 08.13.09 before April, 1993" which follows COMAR 26.20.01.Regulation .02 amended effective October 11, 1993 (20:20 Md. R. 1569) ―. Chapter revised effective October 23, 1995 (22:21 Md. R. 1614) ―.
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