The following words and phrases used in this article shall have the following meanings:
DRIVEWAY
An area which provides vehicular ingress, egress, access or circulation to or from any public or private right-of-way for any building structure, parking area or loading area.
DRIVEWAY APPROACH
All that area of the driveway which is located within the existing road right-of-way or the future right-of-way as determined by the WCDPS or any other agency having jurisdiction over the roadway. In the absence of a road right-of-way, an easement of not less than 60 feet wide shall be assumed to be the road right-of-way.
LOADING SPACE
An off-street space on the same lot with a building, or a group of buildings, for the temporary parking of a commercial vehicle while loading and unloading merchandise or materials.
MANEUVERING LANE
The area which provides adequate access to all parking spaces.
PARKING LOT
All the area which includes parking spaces, loading space, and maneuvering lanes.
PARKING SPACES
An area of adequate length and width for the parking of vehicles. The area provided for each parking space shall be in accordance with Chapter 170, Zoning.
RIGHT-OF-WAY LINE
The line which defines the boundary between private property and that land under control of the public agency having jurisdiction over the roadway. For the purpose of these standards, the right-of-way line shall further be defined as the future right-of-way line as determined by the WCDPS of any other agency having jurisdiction over the roadway.
Where Chapter 170, Zoning, requires hard surfacing of parking lots and driveways, the following minimum standards shall apply. These minimums are based on adequate subgrade and drainage. Soil borings will be required for each site, and additional thickness for the pavement or subbase may be required. All construction practices shall be consistent with the 2003 MDOT Standard Specifications for Construction (or most current) or as modified by the WCDPS for locations within their jurisdiction.
A. 
Parking lot surfaces (commercial, industrial and multiple-family) shall be as follows:
(1) 
Asphalt surface: a thickness of three inches of bituminous pavement placed in two one-and-one-half-inch lifts over eight inches of crushed aggregate base compacted in place. Subgrade shall be proof-rolled using an eight- to ten-ton roller or approved mechanical compaction devise.
(2) 
Concrete surface. A thickness of seven inches of concrete pavement placed over four inches of crushed aggregate base compacted in place. Subgrade shall be proof-rolled using an eight- to ten-ton roller or approved mechanical compaction devise.
B. 
Parking lot layout. The parking lot layout shall conform to the requirements of Chapter 170, Zoning.
C. 
Driveway surfaces (commercial, industrial and multiple-family) for all vehicular access lanes, excluding driveways in parking lots which are for the exclusive use of passenger cars, shall be as follows:
(1) 
Asphalt surface: a thickness of four inches of bituminous pavement placed in two lifts (one-and-one-half-inch wearing course placed over two-and-one-half-inch base course) over eight inches of crushed aggregate base compacted in place. Subgrade shall be proof-rolled using an eight- to ten-ton roller or approved mechanical compaction devise.
(2) 
Concrete surface: a thickness of seven inches of concrete pavement placed over four inches of crushed aggregate base compacted in place. Subgrade shall be proof-rolled using an eight- to ten-ton roller or approved mechanical compaction devise.
D. 
Curb and gutter. Concrete curb and gutter, where proposed, shall be MDOT Detail C4, modified with a reverse slope gutter plan where appropriate.
E. 
Pavement drainage.
(1) 
Minimum grades.
(a) 
Asphalt pavement: 1.00%.
(b) 
Concrete pavement: 0.60%.
(c) 
Concrete curb with gutter: 0.60%.
(2) 
Maximum grades.
(a) 
Driveways: 8.00%.
(b) 
Parking lot: 8.00%.
(c) 
Driveway approach: 2.00%.
(3) 
General.
(a) 
The disposal of stormwater and the design of the storm sewer system shall conform to the requirements as established by these standards.
(b) 
The point of discharge of stormwater from a parking lot, or other paved areas, onto a lawn or landscaped area is not permitted. Sheet flow from parking lots or driveways will be permitted only for the most extenuating of circumstances. Construction cost is not an extenuating circumstance.
(c) 
The drainage of unrestricted water from paved areas to adjacent property is not permitted without a written, executed, and recorded drainage easement which runs with the land. The required easement(s) must be recorded prior to the start of construction of the site improvements.
(d) 
Stormwater disposal to a roadside ditch or any other drainage system shall receive approval form the agency having jurisdiction over the drainagecourse, prior to final site plan approval.
F. 
Driveway approaches. All driveway approaches to be constructed or reconstructed within a road right-of-way under the jurisdiction of the county or state shall be constructed under a permit from that agency. Evidence of the approval of the proposed construction shall be obtained from such county or state agency prior to final site plan approval.
G. 
Specifications. All pavements and subbase material shall meet the current requirements of the MDOT Standards and Specifications. Bituminous surface courses shall be constructed of MDOT HMA 36A. Base courses shall be MDOT HMA 13A. Aggregate subbase shall be constructed of MDOT 21AA limestone. Concrete surface shall be MDOT Grade P1.
H. 
Plan requirements. The following information shall be shown on all plans proposing the construction of driveways and parking lots:
(1) 
Dimensions.
(a) 
Typical parking space.
(b) 
Maneuvering lanes and driveway width.
(c) 
Radii of driveways and all curves.
(d) 
Cross-sectional view of the pavement showing thickness of surface and subbase material.
(2) 
Existing elevations.
(a) 
Contour elevations shown at a minimum of two-foot intervals.
(b) 
Center lines of ditches or swales at a minimum of fifty-foot intervals.
(c) 
Center line and edge of existing roads at a minimum of fifty-foot intervals.
(d) 
Top-of-casting and invert elevations of all existing drainage structures.
(3) 
Proposed elevations.
(a) 
All radii points.
(b) 
All building corners (existing and proposed).
(c) 
Pavement elevation at all corners and at fifty-foot intervals along the edge of the pavement.
(d) 
All high points and ridgelines. (Ridgeline and flow arrow must be shown.)
(e) 
Invert at each drainage control point, including swales, ditches, manholes, catch basins, detention/retention system, etc.
(4) 
Proposed and existing drainage structures.
(a) 
Culverts showing length, diameter and type.
(b) 
Type of culvert end treatment.
(c) 
All existing and proposed drainage structures.
(5) 
Existing topography. The plan shall show all existing natural and man-made features within 50 feet of the site boundaries but not less than the minimum requirements of the site plan requirements of Chapter 170, Zoning.