9.B.1. PRSR 07 14 2004 SUPP. MEMO

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'EkT3TIlVG l~dATU`RAL RESQLIRCES `-:_. ~v[- ~~~ 1~a-~ Land Cover -Agriculture A majority of the land cover is intensive cultivation. Of the approximately 225 acres on this site, 152 acres are currently in cultivation. Further, there was no evidence of contour farming, filter strips, cover crops or other conservation farming practices being employed on the site. The row crops, over a majority of the land, were running parallel to the slopes, ofren running directly to a water body. According to HydroCAD calculations, 10-yeaz storm events result in drainage of between 37.5 cubic feet per second and 103.7 cubic feet per second. These rates are contingent upon watersheds within the site. Through the development of a storm water system, these rates will be reduced to less than 10 cubic feet per second throughout the site. A reduction in sediment and nutrient loading to the receiving bodies will be commensurate with this reduction in runoff. Land Cover -Woodland Approximately 22.8 acres are currently in woodland. The woodland is located in several areas throughout the western and southwestern portions of the property. The majority is located in two stands. One stand is located on the western property line, and abutting Sunset Ridge. This stand is 11.2 acres in size. Terry Jeffery performed a tree survey on June 1, 2004. Three transect were run through the site and ten randomly selected points were sampled. Each sample point had a radius of 20 feet - 1256.6 square feet or 0.028 acres. It is an uneven aged oak hickory stand. The northern and eastern edge of this stand is experiencing an immdation of invasive species, especially common buckthorn Rhamnus cathartica. The interior of this stand, as well as the southern portion of this stand is of high quality. It is a mature stand with a canopy closure between 85 percent and 100 percent. The species composition includes the following co-dominant species: bitternut hickory Carya cordiformis, black cherry Prunus nigra, burr oak Quercus macrocarpa, pin oak Q. ellisoidalis, white oak Q. alba. Ironwood Ostrya virginiana is found as a subordinate tree species. There is virtually no shrub layer in the southern portion of the stand. The forb layer is comprised of large flowered trillium Trillium grandiflora., false-Solomon's-seal Smilicina racemosa, and spinulose woodfern Dryopteris spinulosa. Aerial cover by the forb layer is between 25 percent and 30 percent by area.