A perfectly prepared and recorded subdivision or plat means little to a prospective lot buyer until he or she can see actual physical transformation of raw acreage into lots suitable for building purposes and human habitation. Final approval of a subdivision final plat shall be conditional until certification that required improvements are complete. The following tangible improvements are required before lots may be transferred in a subdivision and/or any building permits issued for construction thereon.
A. Monuments.
(1) Concrete monuments, four inches in diameter or square, three feet long, with a flat top, shall be set at all street corners, at all points where the street lines intersect, at the exterior boundaries of the subdivision and at right angle points and points of curve in each street. The top of the monument shall have an indented cross to identify properly the location and shall sit flush with the finished grade.
(2) At the time of sale or transfer of said lots, the lot corners shall be marked with iron pipe not less than 3/4 inches in diameter and 24 inches long and driven so as to be flush with the finished grade.
B. Grading. All streets, roads and alleys shall be graded to their full width by the developer so that pavements and sidewalks can be constructed on the proper plane. Due to special topographical conditions, deviation from the above will be allowed only with special approval of the Town.
(1) Preparation. Before grading is started, the entire right-of-way area shall be first cleared of all stumps, roots, brush and other objectionable materials and all trees not intended for preservation.
(2) Cuts. All tree stumps and other obstructions shall be removed to a depth of two feet below the subgrade.
(3) Fill. All suitable materials from roadway cuts may be used in the construction of fills, approaches or at other places as needed. Excess materials, including organic materials, soft clay, etc., shall be removed from the development site. The fill shall be spread in layers not to exceed eight inches loose and compacted by a pneumatic tired roller or by a sheepsfoot roller. The filling of utility trenches and other places not accessible to a roller shall be pneumatically tamped but, where water is used to assist compaction, the water content shall not exceed optimum of moisture.
C. Stormwater and drainage facilities.
(1) General requirements. The developer, at the time of presenting the preliminary plat for approval, shall provide an adequate plan for the disposal of all stormwater in the proposed subdivision, which shall be subject to the approval of the Town upon recommendation by the Town Engineer. Development in areas of extremely poor drainage should be discouraged.
(2) Nature of stormwater facilities.
(a) Location. The applicant may be required, upon recommendations by the Town Engineer, to facilitate the removal by pipe or open ditch of any spring or surface water that may exist either previously to, or as a result of, the subdivision. Such drainage facilities shall be located in the road right-of-way, where feasible, or in perpetual unobstructed easements of appropriate width, and shall be constructed in accordance with standards and specifications established by the Town of Delmar.
(b) Accessibility to public storm sewers.
[1] Where a public storm sewer is available within 500 feet of the boundary of the subdivision the applicant shall install storm sewer facilities, or if no outlets are within a reasonable distance, adequate provision shall be made for the disposal of stormwater, subject to the specifications of the Town of Delmar. However, in subdivisions containing lots less than 15,000 square feet in area and in business and industrial districts, underground storm sewer system shall be constructed throughout the subdivisions and be constructed to an approved outfall.
[2] If a connection to a public storm sewer will be provided eventually, as determined by the Town, the developer shall make arrangements for future stormwater disposal by a public utility system at the time the plat receives final approval. Provisions for such connection shall be incorporated in the Public Works Agreement.
(3) Dedication of drainage easements.
(a) General requirements. Where a subdivision is traversed by a watercourse, drainageway, channel, or stream, there shall be provided a stormwater easement or drainage right-of-way conforming substantially to the lines of such watercourse, and of such a width and construction, or both, as will be adequate for the purpose.
(b) Drainage easements.
[1] Where topography or other conditions are such as to make impractical the inclusion of drainage facilities within road rights-of-way, perpetual unobstructed easements shall be provided across property outside the road lines and with satisfactory access to the road as recommended by the Town Engineer. Easements shall be indicated on the plat.
[2] When a proposed drainage system will carry water across private land outside the subdivision, appropriate drainage rights must be secured by the developer and indicated on the plat.
[3] The applicant shall deed, either in fee or by drainage or conservation easement, land on both sides of existing watercourses to a distance to be determined by the Town.
[4] Low-lying lands along watercourses subject to flooding or overflowing during storm periods, whether or not included in areas for dedication, shall be preserved and retained in their natural state as drainageways. Such land or lands subject to periodic flooding shall not be computed in determining the number of lots to be utilized for average density procedure nor for computing the area requirements of any lot.
D. Stabilization. The subgrade may be stabilized by one of the following methods:
(1) Gravel. Place no more than four inches (compacted thickness) bank run gravel to which has been added no less than 150 pounds per square yard SRC Maryland No. 3 graded blast furnace slag and shaped to meet the approval of the Town Engineer.
(2) Selected borrow stabilized with graded aggregate. Four inches compacted thickness) of select borrow may be used to which has been added no less than 150 pounds per square yard of SRC Maryland No. 3 graded blast furnace slag or other suitable material as specified by the Town Engineer. This base material must be mixed, blended, and shaped with Seaman Mixer or equal, and compacted by pneumatic tired roller until a dense, true and firm subgrade has been obtained that will not rut under normal traffic use.
(3) Bank run borrow stabilization with graded aggregate. Borrow meeting these specifications may be used to which has been added no less than 150 square yards of SRC Maryland No. 3 graded blast furnace slag or other material as specified by the Town Engineer. This base material must be mixed, blended, and shaped with seaman mixer or equal, and compacted by pneumatic tired roller until a dense, true and firm subgrade has been obtained that will not rut under normal traffic use.
E. Roadway surfacing. The developer shall have the streets in the subdivision hard surfaced in accordance with approved Town standards with the costs to be established in the public works agreement.
F. Curb and gutter. Curb and gutter in accordance with Town Standards shall be placed by the developer on both sides of all new streets in all subdivisions prior to road surfacing.
G. Water supply facilities.
(1) Public water available.
(a) Where a public water main is located within 500 feet beyond the boundary of the subdivision, the developer shall, upon recommendation of feasibility of the Town Engineer, extend the main and install adequate water facilities (including fire hydrants) to serve all lots shown on the subdivision plat, subject to the specifications of the state and local authorities.
(b) The sizes of water mains, the location and types of valves and hydrants, the amount of soil cover over the pipes and other features of the of the installation shall be approved by the Town Engineer and shall conform with accepted standards of good practice for municipal water systems.
(2) Public water not available.
(a) If a public water system is not available within 500 feet of the boundary of the subdivision, or if connection is not feasible according to Town Engineer, individual wells may be used or a central water system provided in such a manner that an adequate supply of potable water will be available to every lot in the subdivision, in accordance with Health Department requirements.
(b) If the Town requires that an individual well or central water system be eventually connected to a public water main, the applicant shall make arrangements for the future public water service at the time the plat receives final approval. Performance or cash bonds may be required to insure compliance.
(3) Fire hydrants. Fire hydrants shall be located no more than 1,000 feet apart and within 500 feet of any structure and shall be approved by the Town Engineer. To eliminate future street openings, all underground utilities for fire hydrants, together with the fire hydrants themselves and all other supply improvements, shall be installed before any final paving of a street shown on the subdivision plat.
H. Sanitary sewer facilities.
(1) Public system availability. Sanitary sewerage system shall be constructed as follow:
(a) Where a public sanitary sewerage is located within 500 feet of the boundary of the subdivision, then the developer shall, upon recommendation of feasibility by the Town Engineer, extend the main to the subdivision and provide sewers accessible to each lot in the subdivision.
(b) Where public sanitary sewerage systems are not located within 500 feet or if connection is not feasible according to the Town Engineer but will become available within a reasonable time (not to exceed 10 years), the applicant may choose one of the following alternatives:
[1] Central sewerage system, the maintenance cost to be assessed against each property benefited. Where plans for future public sanitary sewerage systems exists, the applicant shall install the sewer lines, laterals, and mains to be in permanent conformance with such plans and ready for connection to such public mains; or
[2] Individual disposal systems, provided the applicant shall install sanitary sewer lines, laterals, and mains from the street curb to a point in the subdivision boundary where a future connection with the public sewer main shall be made. Sewer lines shall be laid from the house to the street line, and a connection shall be available in the home to connect from the individual disposal system to the sewer system when the public sewers become available. Such sewer systems shall be capped until ready for use and shall conform to all plans for installation of public sewer system, where such exist, and shall be ready for connection to such public sewer main.
(c) Where sanitary sewer systems are not located within 500 feet and will not become available for a period in excess of 10 years, individual disposal systems or central sewerage systems may be permitted at the discretion of the Town with the approval of the state and county health authorities.
(2) Mandatory connection to public sewer systems. If a public sanitary sewer is placed in a street or alley abutting upon property, the owner thereof shall be required to connect to said sewer for the purpose of disposing of waste, and it shall be unlawful for any such owner or occupant to maintain upon any such property and individual sewerage disposal system.
(3) Individual disposal system requirements. If public sewer facilities are not available an individual disposal system shall be determined by percolation tests and requirements of the state and county health authorities.
I. Conformance to comprehensive water and sewerage plan. Whenever the Town shall have officially adopted a comprehensive water and sewerage plan, or any part thereof, then the developer shall conform to that plan.
J. Street name signs. Appropriate street signs also add sales value to land subdivisions and enable strangers, delivery concerns and even potential lot buyers to find their way around. Street names shall appear at all intersections. Upon request, the Town will aid the developer with specifications for the construction, placing and setting of such signs.
K. Street trees. Street trees are a protection against excessive heat and glare and enhance the attractiveness and value of abutting property. The Town will assist the developer in location of trees and species to use under varying conditions. It is recommended that trees be planted inside the property lines where they are less subject to injury, decreasing the chance of motor accidents and enjoying more favorable conditions for growth. If trees are to be planted within a planting strip in the right-of-way, their proposed locations and spaces to be used must be submitted for the Town's approval since the public inherits the care and maintenance of such trees.
L. Sidewalks. For the protection of pedestrians and of children at play, installation of sidewalks by the developer shall be required. They shall abut on the property line and shall not be less than four feet in width and four inches in thickness. At depressions for vehicular entrance, all sidewalks shall be of six-inch minimum thickness. If the sidewalk is not on the bed or the street as provided in §
10-169, Sidewalk Standards, then the front face of the sidewalk shall abut on the property line.