07/25/2001 Env Bd Packet - Laserfiche WebLink

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(4) Local public value ratio. A local government unit may by ordinance establish additional local public value ratios to address wetland conservation or preservation issues of local concern. These ratios must have a minimum value of zero and should be based on wetland management objectives of a local water management plan adopted under Minnesota Statutes, chapter 103B or 103D. The local preservation ratios must be applied as specified in subitem (5). (5) Application of replacement ratios. The required replacement ratio for out -of -kind replacement shall be the sum of the wetland type ratio plus the hydrologic unit ratio plus the inlet and outlet characteristics ratio plus the local public value ratio. When this ratio is less than the minimum in -kind ratio of 1:1 for wetlands on agricultural land or in counties or watersheds in which 80 percent or more of the presettlement wetland acreage exists, or 2:1 for wetlands on nonagricultural lands in counties where 50 percent or less of presettlement wetlands exist, the minimum in -kind ratio shall be the required replacement ratio. E. Determining impacts of partial drainage. In cases where wetlands will be partially or incompletely drained, the amount of wetland to be replaced must be determined according to the following formula: 1 Where: NI =OA - - - -(RA) RR NI = Net impact (acres of original wetland type to be replaced) OA = Original acreage of original wetland type RR = Replacement ratio, determined from table 20, using the original wetland type as the impacted wetland type and the wetland type resulting from the partial drainage as the replacement wetland type RA = .Remaining acres of the original wetland Calculation of partial drainage credit is explained by the following example: A ten -acre type 3 (PEMC) wetland is partially drained resulting in a five -acre type 1 (PEMA) wetland. (NI = 10 - 1/3(5) = 8 1/3) Eight and one -third acres of type 3 wetland is the net impact subject to replacement. F. Determining credit for restoration of partially drained wetlands. In cases where partially drained wetlands are restored to their former state, the acres credited for restoring a partially drained wetland is in two parts. The first is the new wetland credit (NWC) caused by the restoration (for example, if the prerestoration wetland is one acre and postrestoration will be three acres, the new wetland credit is two acres). The second credit is for the change in value of the prerestoration wetland acres. This is the public value credit (PVC) and must 54