1987 JUL-DEC-ZBA APPEALS - Laserfiche WebLink

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` l 'eIito EnvironmentaI Consultants ; � ... v 2 region, but notfound ( <1% frequency) in wetlands in ° a the region specified. If a species does not occur in ` wetlands in any region it does not appear on the list. 6 . Drawdown (DRA) . Typically associated with the drier stages of wetlands, such as mudflats, vernal pools, and playa lakes . `` Plants designated Obligate and Facultative are those which most commonly occur in wetlands , 66% - 99% of the time. , Facultative plants are those which are found most frequently in the transition zone between areas with the true hydric soil _ conditions of a wetland and the drier well drained conditions of upland soils . These facultative species are tolerant of wet and dry conditions . The regulations under MGL Chapter 131 Section 40 at 310 CMR 10. 55 ( 2 ) (c) state that the boundary of Bordering Vegetative Wetlands (BVW) is the line within which fifty percent or more of the plant community consists of wetland species . To help determine the boundary of the BVW, LEC applied the "Wetland Site Index for Summarizing Botanical Studies" by Martin C. Michener ( see Appendix A) . This index is based on the FWSNWI and calculates the percentage of wetland plant densities within selected quadrants . To determine the freshwater wetland edge, three 25 foot quadrants were located in the lower elevations of the site where wetlands were most likely to occur ( see Site Plan dated June 8, 1987 ) . These . three sites were then sampled according to methods outlined in Michener ' s paper. All plants located within these quadrants were identified and their percent cover values used in our calculations to help determine the wetland edge. The border of the Salt Marsh plant community (halophytes) was identified by locating the upper most reaches of salt marsh hay (Spartinapatens ) and marsh elder ( Iva frutescens ) . OBSERVATIONS Red and white striped surveyor ' s flags consecutively lettered f A-0 demarcate the edge of Salt Marsh where little freshwater wetland fringe occurs . This high Salt Marsh contained a shrub fringe of marsh elder with an herb layer of salt marsh hay and seaside goldenrod (Solidage sempervirens) . Red and white colored surveyor ' s flagging, consecutively numbered 1 - 11 were placed on the edge of the freshwater Bordering Vegetated Wetland (BVW) plant. community. This small freshwater plant