Orange County NC Website
Commissioner Halkiotis referred to page 116 of the agenda document where Sheriff <br />Pendergrass documented that he has received 2,100 response calls in that area in the <br />last 12 months. He states that providing service for an additional 800 plus persons will <br />increase the service load for the current allotted personnel. He clearly states that <br />providing service to the Lawrence Park Subdivision will require a minimum of one deputy <br />and one vehicle plus equipment. He is hard for him to balance that against the statement <br />by the Orange County Emergency Management. They do not seem to answer the <br />question regarding the possibility of needing additional staff and or equipment. He asked <br />if there would be an impact for EMS and fire services. He has noticed this same response <br />coming from EMS for many past proposal. The Board of County Commissioners is <br />lookingmfor more than geographical information. <br />Planning Board Member Strayhorn asked a question regarding impervious surface. <br />He is still not satisfied. It looks like there is a tremendous amount of question regarding <br />this. He cannot understand how a wet pond is going to slow down much of the run off. <br />Mr.Krichbaum stated that the impervious surface on the site as a whole is 25%. That <br />area would exceed the limit, as 24% is the cut-off point for requiring a detention facility in a <br />critical watershed. In spite of what it may look like, when they have 30% open space <br />outside of the area of the lots, then 25% impervious surface is not very great. As it relates <br />to the wet detention pond, that pond is built with a storage area and then above that an <br />area that holds back run off above the limits of the normal ponds. So that basically, it has <br />a pool area and an impoundment outside the pool that is there to catch the run off, hold it <br />and then release it at a constant rate. It is the standard type of pond that is used <br />throughout the state. It is prescribed by the state Division of Environmental Management <br />for use in these situations. The only reason there is a wet pond, is to allow the water to <br />stand for a period of time prior to discharge so that suspended particulates and impurities <br />in the water will be given chance to settle before they discharge down stream. As he <br />indicated, in the case of a higher rated storm event (a fifty-year or one hundred-year storm <br />event) all of the ground essentially becomes impervious, it becomes saturated and the <br />water stands on top of the ground everywhere. In that case, the difference between pre- <br />development and post-development in these larger storm events is very negligible. There <br />is almost no representative statistical difference in the amount of run-off for a storm of that <br />magnitude. It all runs-off. He also pointed out that there is an existing culvert under US <br />70A; he thought it was a moderately sized culvert. He did not know if it had ever run full <br />but he does know that in spite of how much it might rain, and in spite of how much <br />impervious surface there is on this project, no more water is going to get through that pipe <br />than can get through it today. The idea that there is some type of down stream event that <br />will wash the golf course away is restricted by the fact that no more water can get down <br />stream than can get through the pipe at US 70 right now. <br />Mr. Katz asked if the wet-pond would be functioning during construction time. Mr. <br />Krichbaum said it would and that they would have other sedimentation and control actions <br />in place. They will be complying with all of the County's ordinances. Orange County is <br />Q:\19981123.doc®