D.C. Mun. Regs. tit. 21, r. 21-552

Current through Register Vol. 71, No. 50, December 13, 2024

Rule 21-552 - TRANSITION

552.1

Sections 500 through 545, 546, 547, and 599 of this chapter shall be enforced immediately upon publication as final, except as described below.

552.2

The Department shall enforce a transition to the stormwater management performance requirements in §§ 520 through 522, as follows:

(a) A major regulated project submitting a complete Stormwater Management Plan (SWMP), as required under § 518.4, in support of a building permit application before the end of Transition Period One (TP1), shall:

(1) Be exempt from the requirements of §§ 520 through 522;

(2) Comply with the preceding stormwater management requirements for water quality treatment and detention, in 21 DCMR §§ 529 -30 (as published at 35 DCR 21 (January 1, 1988)), as amended and effective through June 30, 2013; and

(3) Have the right to generate each applicable Stormwater Retention Credit for each gallon of eligible retention capacity in excess of the water quality treatment requirements in subparagraph (2).

(b) A major land-disturbing activity submitting a complete SWMP, as required under § 518.4, in support of a building permit application after TP1 and before the end of Transition Period Two A (TP2A) and a major substantial improvement activity submitting a complete SWMP, as required under § 518.4, in support of a building permit application after TP1 and before the end of Transition Period Two B (TP2B) shall comply with this chapter, except that:

(1) The requirement in § 520 to achieve a minimum of fifty percent (50%) of the 1.2 inch Stormwater Retention Volume (SWRv) on site shall be waived; and

(2) The entire SWRv may be achieved off-site, in accordance with § 527.

(c) A major regulated project submitting a complete SWMP, as required under § 518.4, in support of a building permit application, for an area that was described explicitly in an Advanced Design (AD) and for which the approval of the AD reviewing body has not expired, shall comply with:

(1) Paragraph (a) of this subsection, if the AD was submitted before the end of TP1; and

(2) Paragraph (b) of this subsection, if the AD was submitted after TP1 and before the end of TP2A, for a major land-disturbing activity or before the end of TP2B, for a major substantial improvement activity.

(d) An area of a multi-phased major land-disturbing activity for which each stormwater infrastructure and best management practice required in a Department-approved SWMP was installed during a preceding phase of construction shall be deemed to have achieved compliance with the stormwater management requirements of this chapter and shall not be required to submit a separate SWMP to support a building permit application.

552.3

A major regulated project shall comply with the storm water management requirements of §§ 552.1 and 552.2 that are enforced at the time it submits a complete SWMP, as required under § 518.4, if:

(a) The project must re-apply for a building permit because the preceding permit has expired under 12-A DCMR § 105.5 or the permit application had been abandoned under 12-A DCMR § 105.3.7; or

(b) The project applies for a building permit after the approving body's approval of an Advanced Design (AD) has expired.

552.4

This section shall be narrowly construed, and nothing in this section shall be interpreted to otherwise affect the enforcement of the other requirements and procedures in this chapter.

552.5

This section shall not apply to a complete storm water management plan submitted to the Department after July 31, 2020.

D.C. Mun. Regs. tit. 21, r. 21-552

Final Rulemaking published at 60 DCR 10640 (July 19, 2013); amended by Final Rulemaking published at 67 DCR 844 (1/31/2020)

Authority: Department of Consumer and Regulatory Affairs Civil Infractions Act of 1985, effective October 5, 1985, as amended (D.C. Law 6-42; D.C. Official Code §§ 2-1801.01 et seq. (2007 Repl. & 2012 Supp.)); District Department of the Environment Establishment Act of 2005, §§ 101 et seq., effective February 15, 2006, as amended (D.C. Law 16-51; D.C. Official Code §§ 8-151.01 et seq. (2008 Repl. & 2012 Supp.)); National Capital Revitalization Corporation and Anacostia Waterfront Corporation Reorganization Act of 2008, effective March 26, 2008 (D.C. Law 17-138; 55 DCR 1689), as amended by the Anacostia Waterfront Environmental Standards Amendment Act of 2012, effective October 23, 2012 (D.C. Law 19-192; D.C. Official Code §§ 2-1226.31 et seq.) (2012 Supp.)); The Soil Erosion and Sedimentation Control Act of 1977, effective September 28, 1977 (D.C. Law 2-23; 24 DCR 792), as amended by the Soil Erosion and Sedimentation Control Amendment Act of 1994, effective August 26, 1994, (D.C. Law 10-166; 41 DCR 4892; 21 DCMR §§ 500 -15); Uniform Environmental Covenants Act of 2005, effective May 12, 2006, as amended (D.C. Law 16-95; D.C. Official Code §§ 8-671.01 et seq. (2008 Repl.)); Water Pollution Control Act of 1984, effective March 16, 1985, as amended (D.C. Law 5-188; D.C. Official Code §§ 8-103.01 et seq. (2008 Repl. & 2012 Supp.)); and Mayor's Order 2006-61, dated June 14, 2006, and its delegations of authority.