Laserfiche WebLink
Table 37.2: Standard Wetland Compensation Ratios <br />Category <br />Reestablishment or <br />Reestablishment or <br />and Type <br />Reestablishment or <br />Creation (R/C) and <br />Creation (R/C) and <br />Enhancement <br />of Wetland <br />Creation <br />Rehabilitation <br />Rehabilitation (RH) <br />Enhancement (E) <br />Only <br />Category I <br />Forested <br />6:1 <br />12:1 <br />11:1 R/C and 10:1 <br />1:l R/C and 20:1 E <br />24:1 <br />RH <br />Bog <br />Irreplaceable— <br />6:1 Rehabilitation of <br />R/C not considered <br />R/C not considered <br />Case-by-case <br />Avoidance Required <br />a Bog <br />possible <br />possible <br />Natural <br />Irreplaceable— <br />6:1 Rehabilitation ofa Natural Heritage <br />R/C not considered <br />R/C not considered <br />Case-by-case <br />Heritage <br />Avoidance Required <br />Site <br />possible <br />possible <br />Others <br />4:1 <br />8:1 <br />1:1 R/C and 6:1 RH <br />1:1 R/C and 12:1 E <br />16:1 <br />Category II <br />Forested <br />4:1 <br />8:1 <br />1:1 R/C and 4:1 RH <br />1:1 R/C and 6:1 E <br />16:1 <br />Others <br />3:1 <br />6:1 <br />1:1 R/C and 4:1 RH <br />1:1 R/C and 8:1 E <br />12:1 <br />Category <br />2:1 <br />4:1 <br />1:1 R/C and 2:1 RH <br />1:1 R/C and 2:1 E <br />8:1 <br />III <br />Category <br />1.5:1 <br />3:1 <br />1:1 R/C and 1:1 RH <br />1:1 R/C and 2:1 E <br />6:1 <br />IV <br />Creation = The manipulation of the physical, chemical, or biological characteristics present to develop a <br />wetland on an upland or deepwater site, where a wetland did not previously exist. Activities typically <br />involve excavation of upland soils to elevation that will produce a wetland hydroperiod, create hydric soils, <br />and support the growth of hydrophytic plant species. Establishment results in a gain in wetland acres. <br />Activities typically involve excavation of upland soils to elevations that will produce a wetland <br />hydroperiod, create hydric soils, and support the growth of hydrophytic plant species. <br />Reestablishment = The manipulation of the physical, chemical, or biological characteristics of a site with <br />the goal of returning natural or historic functions to a former wetland. Activities could include removing fill <br />material, plugging ditches, or breaking drain tiles. Reestablishment results in a gain in wetland acres. <br />Activities could include removing fill material, plugging ditches, or breaking drain tiles. Activities could <br />involve breaching a dike to reconnect wetlands to a floodplain or return tidal influence to a wetland. <br />Rehabilitation =The manipulation of the physical, chemical, or biological characteristics of a site with the <br />goal of repairing natural or historic function of a degraded wetland. Activities could involve breaching a <br />dike or reconnecting wetland to a floodplain or returning tidal influence to a wetland. Rehabilitation results <br />in a gain in wetland function but does not result in a gain in wetland acres. <br />Enhancement = The manipulation of the physical, chemical or biological characteristics of a wetland site <br />to heighten, intensify or improve functions or to change the growth stage or composition of the vegetation <br />present. Enhancement is undertaken for specified purposes such as water quality improvement, flood water <br />retention or habitat. Activities typically consist of planting vegetation, controlling nonnative or invasive <br />species, modifying the site elevation or the proportion of open water to influence hydroperiods, or some <br />combination of these. Enhancement results in a change in some wetland functions and can lead to a decline <br />in other wetland function, but does not result in a gain in wetland acres. Activities typically consist of <br />planting vegetation, controlling nonnative or invasive species, modifying site elevations or the proportion <br />of open water to influence hydroperiods, or some combination of these activities. <br />14 <br />