A. 
The subdivider shall be required to provide and install, or to enter into agreements to provide and install, certain minimum improvements in the subdivision as a condition for approval of the final plat by the Planning Commission. All such required improvements shall be constructed in accordance with the minimum requirements of these regulations and the construction standards and specifications adopted by the Mayor and Council or such other governmental agency as may have jurisdiction over a particular improvement. Nothing contained herein, however, shall be construed as prohibiting the subdivider from installing improvements meeting higher standards than the minimum requirements.
B. 
Prior to filing the final plat with the Planning Commission, the required improvements shall be completed, inspected and approved by the proper authorities, except that, in lieu of completing all improvements prior to submission of the final plat, the subdivider may furnish the Mayor and Council with a cash deposit or irrevocable letters of credit, not to be less than 25% above costs estimated by the approving authority. Such cash deposit or letters of credit shall be in an amount sufficient to cover the cost of the improvements required to be installed by the subdivider, thereby insuring the actual construction and installation of such improvements prior to, or in no case later than, the time that such improvements are needed to serve buildings placed on abutting lots. The cost of required improvements shall be estimated by the Engineer or other authority having jurisdiction. In the event of any dispute concerning the amount of cash deposit or letters of credit required, the Mayor and Council shall make the final decision based upon at least two additional cost estimates.
The minimum requirements for the installation of improvements in subdivisions shall be as follows:
A. 
Roads and streets.
(1) 
All new roads and streets shall be constructed in accordance with the minimum requirements of these regulations and the minimum construction standards adopted by the Mayor and Council.
(2) 
Existing roads and streets which do not meet these specifications with regard to width or type of construction shall be widened and brought into conformity on that portion of the road or street within or adjoining the subdivision.
(3) 
The roadbed and roadway wearing surface shall be constructed in accordance with applicable Town standards. Curbs and gutters shall be provided in all subdivisions where the average lot area is less than one acre. Where curbs and gutters are not required, stabilized shoulders and stabilized drainageways outside the shoulders shall be provided. Street name signs of an approved design shall be erected at each new street or road intersection.
B. 
Surface drainage facilities. The subdivision shall be provided with such storm drains, culverts, drainageways or other works as are necessary to collect and dispose of surface and stormwaters originating on or flowing across the subdivision, in order to prevent inundation and damage to streets, lots and buildings.
C. 
Water supply facilities.
(1) 
Every subdivision with lots of such size as to require a public water supply under the regulations of the State Department of Health shall be provided with a community water supply and distribution system and appropriately spaced fire hydrants. The source of supply may be a county or municipal water system, in which case the distribution system for the subdivision shall meet the standards for such system and shall become a part thereof without cost to the county or municipality, or it may be an independent source of supply approved by the Health Officer, in which case some acceptable arrangement shall be made for its ownership and operation by a nonprofit water association.
(2) 
Where a public source of water supply will not be available, private on-site sources of water supply, approved by the Health Officer, shall be provided.
D. 
Sanitary sewerage facilities.
(1) 
Every subdivision with lots of such size as to require a public sewer system under the regulations of the State Department of Health shall be provided with a community sanitary sewer system connected to a county or municipal system or to an adequate community sewage disposal plant meeting the requirements of the State Department of Health. If connected to a county or municipal system, sewers shall be constructed to meet the standards and requirements of such system and shall become a part thereof without cost to the county or municipality. If built as an independent system, some acceptable arrangement for ownership and operation by a nonprofit sewer association shall be made.
(2) 
Where a public sewerage system will not be available, private on-site means of sewage disposal meeting the requirements of the Health Officer shall be provided; and, in addition, the Health Officer may require the installation and capping of sanitary sewer mains and house connections if his evaluation shall indicate that public sewer service will be necessary in the future to protect public health.
E. 
Street trees. Street trees and other landscaping improvements shall be considered as a desirable part of street improvements in the subdivision. If the subdivider proposes to install such trees and landscaping, the proposed location and the species of plant material to be used shall be subject to the approval of the Engineer.
F. 
Reference monuments.
(1) 
Permanent reference monuments, of stone or concrete and at least 36 inches in length and four inches square with a suitable center point, shall be set flush with the finished grade at such locations as may be required by the Planning Commission and the laws of the State of Maryland.
(2) 
Monuments of metal pipe, 3/4 inch in diameter and at least 24 inches in length, shall be set in place flush with the finished grade at all intersections of streets; at all intersections of streets and alleys with subdivision boundary lines; at all points on streets, alleys and boundary lines where there is a change in direction or curvature; and at all lot corners.
Plans, profiles and specifications for the required improvements shall be prepared by the subdivider and submitted for approval by the appropriate public authorities prior to construction. Plans and profiles shall be drawn to a horizontal scale of one inch to 100 feet or less and a vertical scale of one inch to 20 feet or less, unless the Engineer shall specify otherwise, and such plans and profiles shall be sufficiently detailed to show the proposed location, size, type, grade and general design features of each proposed improvement. The plans, profiles and specifications to be submitted shall include the following:
A. 
Plans and profiles of each street, showing proposed grades and street intersection elevations.
B. 
Cross-sections of proposed streets, showing the widths of roadways, present and proposed grade lines and the location and size of utility mains, taken at intervals of not more than 50 feet along each street centerline, unless otherwise required by the Engineer. Such cross sections shall extend laterally to the point where the proposed grade intersects the existing grade, except that in no case shall less than the full width of the street right-of-way be shown.
C. 
Plans and profiles of proposed sanitary sewers and storm drains, with proposed grades and pipe sizes indicated.
D. 
Plans of the proposed water-distribution system, showing pipe sizes and the locations of all valves and fire hydrants.
E. 
Where appropriate, a site plan of proposed street trees and other landscaping improvements.
F. 
Written specifications for all proposed improvements.
A. 
All construction work on improvements required herein shall be subject to inspection and approval by the Engineer, Health Officer and other authorized public officials during and upon completion of such construction work. Upon the completion of each improvement, the subdivider shall furnish the appropriate official with accurate and detailed engineering drawings of the improvement as it was actually constructed.
B. 
The final plat of the subdivision shall not be approved by the Planning Commission until all required improvements shall have been satisfactorily completed and approved as being in compliance herewith or satisfactory irrevocable letters of credit, not to be less than 25% above costs estimated by the approving authority, posted in lieu of such completion. No such letters of credit shall be released until all improvements secured by such letters of credit shall have been completed and approved as being in compliance herewith; provided, however, that a partial release may be approved for such improvements as may have been completed and approved by appropriate officials.
C. 
Approval of the final plat by the Planning Commission shall not be deemed to constitute or effect an acceptance by the public of the dedication of any street or other proposed public way or public grounds shown on said plat. The jurisdiction involved shall have no obligation to accept and to make public any street in a subdivision, unless:
(1) 
All required improvements shown on the approved final plat have been constructed in conformity with the required standards and specifications; or
(2) 
A petition signed by the owners of at least 50% of the frontage of the street in question, requesting that the street be taken over and made public, is filed with the governing body of the jurisdiction involved, and it is established by such governing body that there is a need for the street to be taken over and made public.
D. 
The jurisdiction involved shall have no responsibility with respect to any street within a subdivision, notwithstanding the use of such street by the public, unless the street is accepted by ordinance or resolution of the governing body of such jurisdiction.