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r, <br />UPPER ENO WATERSHED <br />bridges, and non - residential development. <br />d) Use and Storage of Hazardous Materials <br />An inventory of all hazardous materials used and stored in the watershed must be maintained. <br />A containment plan in the event of spill of failure, and appropriate safeguards against <br />contamination are required. <br />III. ISSUES <br />A. The WS IV classification proposed by the state does not match that requested by Orange <br />County (WS III). <br />B. The critical area proposed in the Rules is larger than what is now defined as the Water <br />Quality Critical Area (WQCA). <br />C. The minimum lot size would increase from .92 acres to 2 acres in the watershed, and <br />from 1.84 acres to 2 acres in the WQCA. <br />D. Impervious surfaces would not include gravel. Current regulations do not consider <br />gravel an impervious surface except in the University Lake Watershed. <br />E. The minimum stream buffer would be increased from 50' to 1001 <br />. <br />F. Operation and maintenance of detention ponds or other engineered stormwater controls <br />will require oversight by the County. <br />G. The amount of impervious surface for non - residential development in the watershed <br />would increase from 50% to 70%. However, the total amount of area that could be <br />used for non - residential purposes would be limited to 10% of the watershed. There is <br />currently no limit. <br />H. The proposed rules (as of 7 -1 -91) would apply a 10 foot vegetative stream buffer for <br />animal agricultural operations. However, the rules do not specify how this buffer would <br />be enforced or implemented (state law exempts agricultural operations from zoning.) <br />I. The number of water bodies (existing and proposed) in the Upper Eno basin make this <br />watershed in actuality, five watersheds - unique. The proposed classification for the <br />entire Eno River basin is WS -IV. This classification does not recognize the Upper Eno <br />as having different characteristics from the remainder of the "run -of -the- river" case. <br />DEM has indicated that individual local governments may request different classifications <br />for portions of watersheds such as this as a part of the August 15 public hearing. Because <br />of the importance of protecting future water supplies for northern Orange, local <br />governments may wish to request a higher quality classification for the Upper Eno. <br />10 <br />