A. 
Proposed streets shall be appropriate to the topography and location and shall conform to the objectives of the plan of development and the Commission's tentative street layouts, where they are developed. Street patterns shall give due consideration to contours and nature features. Where required by the Commission, provision shall be made for the extension of the street pattern to abutting undeveloped property.
B. 
Permanent dead-end streets shall generally not exceed 600 feet in length as measured from the street line of the intersecting street to the center of the cul-de-sac. Such streets shall terminate in a turnaround not less than 100 feet in diameter with an island of natural vegetation or landscaping in the center not less than 30 feet in diameter and providing a paved circumferential lane not less than 25 feet wide.
C. 
Temporary dead-end streets, where required by the Commission or where indicated on the plan, may exceed 600 feet in length but in general shall provide required street frontage for not more than 20 dwellings. In such cases, the full width of the right-of-way to the subdivision property line shall be dedicated to the Town, but the Town will require only an easement to the segments to the turnaround outside the normal road right-of-way width.
D. 
The easement on segments of the turnaround shall provide that the Town or its agent may enter the property within such segments for the purpose of continuing and removing turnaround improvement when the street is to be extended.
E. 
Extensions.
(1) 
When a street ending in a temporary cul-de-sac is to be extended as a continuance street, the subdivider constructing such street extension shall be responsible for and shall include in the bond all work related thereto, including:
(a) 
Removal outside of the final paved road right-of-way of all road materials and facilities not needed and replacement with earth loam and seeding as required.
(b) 
Extension of all utilities and improvements, including sidewalks, where required.
(c) 
Repair and replacement of any change on public or private property directly related to the removal of the cul-de-sac, in accordance with Town standards and subject to the concurrence of the abutting property owner to the extent that his permission is needed to complete the cul-de-sac repair and replacement on his private property outside the temporary easement.
(2) 
The above work shall be completed within two months from the date of notification by the Director of Public Works certifying that the existing cul-de-sac is no longer needed.
F. 
Where a street may now or in the future carry other than the neighborhood traffic and where shown on the plan of development and tentative overall street layouts, a right-of-way width greater than the required minimum may be required, and such requirements will be determined by the Commission during review of the preliminary plan. No street shall have a right-of-way width less than 50 feet.
G. 
The subdivision plan and the public improvement and utility map of any proposed subdivision shall show all work required to connect and complete the improvements and utilities between proposed street pattern and any nonimproved connecting street in any existing subdivision.
Layout of lots shall conform to modern standard practices and shall be appropriate for the intended construction. Corner lots shall have extra width to permit a front yard on each street, which will be required in all new subdivisions. Wherever possible, key lots shall be used at the narrow end of a block. Side lot lines shall generally be at right angles to straight street lines or radial to curved street lines. Except in cases of unusual topography or property lines, through lots bounding on two generally parallel streets will not be permitted.
All dead and diseased trees shall be removed from land to be dedicated to public use. Existing trees in land required for public open space, § 143-14 shall be preserved unless otherwise directed by the Commission. Existing trees shall be preserved whenever feasible, and where no trees are preserved in the front yard, each lot shall have two trees of not less than 1 1/2 inches' caliper, of a species approved by the Town Tree Warden, planted not less than 10 feet inside the sidewalk, between the sidewalk and the building line. At the request of a single lot owner other than the developer, the provision requiring two trees per lot may be waived for his lot.
A. 
Streets.
(1) 
Streets shall be graded to the full width of the right-of-way.
(2) 
Streets or curbs, gutters and sidewalks, where required, shall be constructed in accordance with the best modern practice, as more fully described in Design and Construction Standards for Public Improvements of the Engineering Division of the Town of Wethersfield, which are included herein as § 143-42 and the materials shall meet the specifications of the State of Connecticut Department of Transportation.
B. 
All storm drainage lines and structures shall be constructed in accordance with the best modern practice, as more fully described in Design and Construction Standards for Public Improvements of the Engineering Division of the Town of Wethersfield, which are included herein as § 143-43, and materials shall meet the specifications of the State of Connecticut Department of Transportation.
C. 
Sanitary sewer and water installation shall be made in accordance with the standards and requirements of the Metropolitan District Commission.
D. 
Where a site grading plan is required by the Commission, land shall be brought to final grades shown, and lot grades exceeding 5% or subject to erosion shall be stabilized with an existing cover crop.
A. 
Where, in the Planning and Zoning Commission's judgment, the size of the subdivision or specific conditions of topography, property lines or proposals for development of adjoining properties create conditions limiting the most effective subdivision of land, the Commission may waive or modify certain requirements under these regulations by a 3/4 vote of all the members of the Commission, provided that the public interest and safety are not adversely affected and land in the subdivision can be more effectively subdivided. The Commission shall state upon its records the reason for which a waiver is granted in each case.
B. 
Where conditions governing a subdivision or the time of year construction indicate, in the judgment of the Engineering Division, minor modifications in construction materials and techniques, the Engineering Division may modify specific construction requirements contained in §§ 143-41, 143-42 and 143-43 herein, in the interest of obtaining better work and/or materials, provided that such modifications shall not increase the scope of the work or conflict with the general purpose and intent of these regulations.