The system shall be adequate to carry off storm water and natural drainage water which originates within the watershed affected by the plan. No storm water runoff or natural drainage water shall be so diverted as to overload existing drainage systems to create flooding or the need for additional drainage structures on other private properties or public lands without proper and approved provisions being made for taking care of these conditions.

Techniques for computing water run-off and designing drainage controls shall be as prescribed by the Soil Conservation Method or the Rational Method and subject to the approval of the Borough Engineer.

The following intensities shall be used to determine the required capacity in cubic feet per second for the collection system design:

All materials used in the construction of storm sewers, bridges and other drainage structures shall be in accordance with the specifications of the "Standard Specifications for Road and Bridge Construction, 1989."

Pipe sizes shall be determined by acceptable drainage design procedures; provided that the pipe size in a surface water drainage system shall in no instance be less than 15 inches in diameter. All piping and the manner installed shall be subject to approval by the Borough Engineer.

The rate and velocity of runoff from the site following completion of the proposed development shall not exceed that which would prevail in a pasture of good hydrologic condition or previous cover, whichever produces the least amount of runoff. Peak flows should be controlled for the one- ten- and 100-year storms with any release rate (Q) not to exceed the ten-year storm volume.

Drainage inlets shall be located at all intersections, with inlets on both sides of a street at intervals of not more than 400 feet or such shorter distances as required to prevent the flow of surface water from exceeding six cubic feet per second at the drainage inlet.

Access manholes shall be placed at maximum 500 feet intervals throughout the system and at pipe junctions where there are no drainage inlets.

Lots shall be graded away from the building(s). Additionally, drainage shall be provided in a manner which will prevent the collection of storm water in pools or other unauthorized concentrations of flow and water shall not flow across adjacent property lines at greater than predevelopment rates.

Approval of drainage structures shall be obtained from the appropriate municipal, County, State and Federal agencies and offices. Where required, each applicant shall make application to the Division of Water Resources of the State Department of Environmental Protection, the Sussex County Engineering Department and the Borough Engineer. Final approval from the proper governmental authorities shall be furnished to the Secretary of the Planning Board with a copy of each letter forwarded to the Borough Engineer.

When required by the municipality and as indicated on an approved development plan, a drainage right-of-way easement shall be provided to the Borough where a tract or lot is traversed by a watercourse, surface or underground drainage way or drainage system, channel or stream. The drainage right-of-way easement shall conform substantially with the lines of such watercourse and provide a ten-foot access strip along at least one side of the watercourse. In any event, the easement shall be consistent with any minimum widths and locations as shown on any adopted Official Map or Master Plan. Such easement shall be expressed on the plat as follows: "Drainage easement granted for the purposes provided and expressed in the Land Development Ordinance of the Borough of Ogdensburg."