Lakehurst City Zoning Code
§ 25-27.8
Drainage.
[Ord. No. 11/78; Ord. No. 5/24/82]
All streets shall be provided with storm water inlets and pipes where same may be necessary for proper surface drainage. The system shall be adequate to carry off and/or store the storm water and natural drainage water which originates beyond the development boundaries and passes through the development calculated on the basis of maximum potential development as permitted under this chapter. No storm water run-off or natural drainage water shall be so diverted as to overload existing drainage systems or create flooding or the need for additional drainage structures on other lands without proper and approved provisions being made for taking care of these conditions, including off-tract improvements. All drainage design and computation factors shall be submitted to the Planning Board Engineer for review and approval and shall conform to the requirements of subsection 25-27.41.
a.
The duration of a storm used in computing storm water run-off shall be the equivalent of the time required for water falling at the most remote point of the drainage area to reach the point in the drainage system under consideration.
b.
No pipe size in any storm drainage system shall be less than 15 inches in diameter.
c.
Dished gutters on local streets shall be permitted only at “T” intersections involving local streets. Dished gutters shall not be permitted on arterial or collector streets.
d.
Storm drain pipes running longitudinally along streets shall not be located under curbing.
e.
Storm drain pipes shall be reinforced concrete pipe in all cases and shall be of the size specified and laid to the exact lines and grades approved by the Planning Board Engineer. Reinforced concrete pipe shall conform to A.S.T.M. specification C76. All pipe shall be Class III strength except where stronger pipe is required as determined by the Planning Board Engineer. Joints shall be made with “O-Ring” rubber gaskets.
In locations other than within the right-of-way of public roads where, because of severe topographic conditions or the desire to minimize the destruction of trees and vegetation, corrugated aluminum pipe, pipe arch, or helical corrugated pipe may be used. The material used shall comply with the Standard Specifications for Corrugated Aluminum Alloy Culvert Pipe and Pipe Arch ASSHO designation M-211-65. The minimum thickness of the aluminum pipe to be used shall be: less than twenty-four inch diameter or equivalent, 0.075 inches (14 gauge); twenty-four-inch diameter and less than forty-eight-inch diameter or equivalent, 0.105 inches (12 gauge); forty-nine-inch but less than seventy-two-inch diameter or equivalent, 0.135 inch (10 gauge); and seventy-two-inch diameter or equivalent, and larger, 0.164 inches (eight gauge).
f.
For both major and minor developments, blocks and lots shall be graded to secure proper drainage away from all buildings and to prevent the collection of storm water in pools and to avoid concentration of storm water from each lot to adjacent lots.
g.
Where a minor or major site plan or subdivision is traversed by a watercourse, surface or underground drainageway or drainage system, channel or stream, there shall be provided and dedicated a drainage right-of-way easement to the municipality conforming substantially with the lines of such watercourse, and such further width or construction, or both, as will be adequate to accommodate expected storm water run-off in the future based upon reasonable growth potential in the municipality and, in addition thereof, a minimum of 15 feet beyond the bank top on at least one side for access to the drainage right-of-way, and, in any event, meeting any minimum widths and locations shown on any adopted official map or master plan or as required under the subsection 25-27.9 entitled, “Easements.”