A. Every subdivision shall be provided with a storm water or surface drainage system adequate to facilitate a 10-year flood in the area, being platted and in conformance with a master storm drainage plan of the watershed of which it is a part. All subdivisions should comply with the village's storm water management ordinance 1 and floodplain ordinance 2 together with other regulations and policy as applicable.
B. All existing field tiles must be identified on the preliminary plat and on the development grading plan. (Ord. 93-721, 12-14-1993)
C. Major drainage swales shall have a minimum bottom width of two feet (2') and the side slopes shall not exceed a slope of greater than four to one (4:1). (Ord. 05-1312, 9-27-2005, eff. 10-2-2005)
D. The mainline storm sewers shall be not less than twelve inches (12") in diameter and adequately sized to accept the storm water discharge from these services in addition to the ten (10) year design storm.
E. Immediately prior to the final inspection of the public improvements and before their acceptance by the village, all storm sewers, manholes, inlets and catch basins in the entire system shall be cleaned of all debris and the complete system shall be thoroughly flushed out. (Ord. 93-721, 12-14-1993)
F. A four inch (4") PVC SDR 35 ASTM D3034 storm sewer service line shall be provided for each lot within the subdivision, unless it can be demonstrated that the building will not have a sump pump. All storm water sump discharge lines shall be attached to this service line, which shall be connected to a storm drainage structure. At locations where it is not practical to connect these storm sewer service lines directly to a storm drainage structure in a rear yard, storm sewer service laterals (minimum diameter of 6 inches) shall be placed in a five foot (5') easement parallel to and behind the sidewalk. Said laterals shall be connected to the storm sewer system at drainage structures, and shall be increased in size if more than four (4) houses are connected. The maximum number of houses connected to a lateral shall be eight (8). (Ord. 05-1312, 9-27-2005, eff. 10-2-2005)
G. For all new subdivisions, a minimum of one drainage structure (inlet or manhole) shall be furnished along the rear lot line unless otherwise approved by the village engineer based on sound engineering practices. The subdivider's engineer shall furnish to the public works department and the village engineer for approval an "as built" drawing showing the rim and invert elevations of all rear lot drainage structures. No building permit shall be issued until these elevations have been approved. For purposes of this section, a "new subdivision" shall mean all property, which has not secured preliminary plat approval before December 31, 2001. (Ord. 01-1065, 9-11-2001)
Notes
| 1 | 1. See title 12, chapter 2 of this code. |
| 2 | 2. See title 12, chapter 1 of this code. |