The Department of Transportation (DOT) involvement in the County Conservation of Natural Resources program is mandated by Section 2-55 (d) of the County Code which requires DOT to be responsible for control, supervision, design, construction, and maintenance of all culverts and storm drainage systems under the jurisdiction of the County.The DOT Storm Drains Capital Program consists of the construction of storm drainage structures such as curbs, gutters, drainage inlets, pipes, and channels. Such networks are constructed to provide for the conveyance of stormwater from impervious surfaces into natural drainage swales and stream channels. This program is focused...
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PROGRAM DESCRIPTION AND OBJECTIVES
The Department of Transportation (DOT) involvement in the County Conservation of Natural Resources program is mandated by Section 2-55 (d) of the County Code which requires DOT to be responsible for control, supervision, design, construction, and maintenance of all culverts and storm drainage systems under the jurisdiction of the County.
The DOT Storm Drains Capital Program consists of the construction of storm drainage structures such as curbs, gutters, drainage inlets, pipes, and channels. Such networks are constructed to provide for the conveyance of stormwater from impervious surfaces into natural drainage swales and stream channels. This program is focused on storm drainage projects outside the scope of the larger DOT Roads program, which also installs storm drainage systems at the time of new road construction or existing road reconstruction or enhancement.
A second component of the Storm Drains program involves County, developer, and homeowner participation in the construction of storm drainage facilities. Construction of storm drainage facilities provides a public benefit by reducing drainage problems, flooding, property damage, and contributing to the orderly development of the County. In participation projects, the County and the developer or the homeowner agree to share the costs of storm drainage facilities in which the benefit of storm drainage extends beyond the developer's or homeowner's own property. The County pays only for that portion of the project which benefits properties other than the developer's or homeowner's, not to exceed 50 percent of the total cost. Homeowners can satisfy their portion of the cost-share through in-kind contributions.
STORMWATER MANAGEMENT COORDINATION
In February 2010, the Maryland Department of the Environment issued the County a National Pollutant Discharge Elimination System (NPDES) Permit. This permit requires that the County develop and implement a Stormwater Management program to prevent harmful pollutants from being washed or dumped into the Municipal Separate Storm Sewer Systems (MS4). DOT partners with the Department of Environmental Protection (DEP) in implementing the MS4 Permit by 1) constructing Stormwater Management (SWM) retrofit programs which have been developed through DEP's MS4 planning studies, 2) providing opportunities for curb bump-outs and road narrowing where feasible to permit implementation of Low-Impact Development (LID) SWM provisions within the right-of-way, 3) seeking DEP guidance on prioritization of storm drain outfall repairs, and 4) coordinating with DEP on storm drain projects developed in the Storm Drain General and Facility Planning Storm Drain programs to identify opportunities for enhancements which would assist in meeting the requirements of the MS4 permit.
In recognition of the Stormwater Management added value to the Storm Drains projects, Storm Drains have historically been funded through Water Quality Protection Bonds and Current Revenue: Water Quality Protection.
PROGRAM CONTACTS
Contact Dan Sheridan of the Department of Transportation at 240.777.7283 or Payne Tarkenton of the Office of Management and Budget at 240.777.2758 for more information regarding this department's capital budget.
CAPITAL PROGRAM REVIEW
The Storm Drains program for FY27-32 includes four ongoing projects totaling $61.9 million. This represents a $27.1 million or 77.9% increase from the Amended FY25-30 program of $34.8 million. This increase is largely driven by shifting approximately $4.7 million annually in FY27 through FY32 from DOT operating expenditures to the Storm Drain Culvert Replacement project in order to relieve pressure on the Water Quality Protection Charge rate. Other project changes consist of revisions to the annual funding and expenditure amounts and the addition of FY31 and FY32 to the program.
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