A. Due to the nature of County regional drainage facilities to control surface water runoff from large tracts of land, it is recognized that it may not be feasible, both fiscally and physically, to control runoff as stipulated in the Manual for new or retrofit facilities. The County shall make every effort reasonable to control runoff to the discharge, storage, and quality criteria established in the Manual. Where determined impractical by the Director of Planning and Public Works, the County will be allowed to modify the criteria for regional facilities and design for maximization of the available land space for control of stormwater. In this case, the County shall design the facility for the primary function of stormwater control and any other multi-use functions shall be considered only after maximizing the stormwater aspects of the facility. Facilities that do not meet the Manual's Volume I minimum requirements will not accept excess discharge flows from new developments.

B. Drainage facilities constructed by private development to mitigate for the impacts of new development or re-development will not be viewed as regional drainage facilities and shall meet all provisions of this Title.