July 12, 2022 PZ Agenda - Laserfiche WebLink

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Planningand Zoning Commission Minutes June 14, 2022 Mr. Wong said he spoke with Mr. Jim Farkas, NCDNR,in charge of this area. I talked with him, and we had severaldiscussions and helooked at the code. Mr. Wongbelieves it is in your packet that included some of thediscussion that we had. He said based on the calculation,ifyou are below24 percent,it is considered low density, above that it is high density. High density requires a lot more detention ponds and things like that. In a low density,you have avegetative swell, but you still have to make sure that the flow goes to the vegetative swell,but you will nothave a detention pond. The Chairsaid heis confused. Hesaid in you presentationyou said 7.55 acres but, on your plan, you are showing 5.5acres. He said go to page 19 in your packet. Mr. Corley said the math is more of the question. So, we have taken the difference ofproposed and existing, and we are adding a quarter of acre. He asked if that was correct. The Chair thinks so. Mr. Corley said it does not jive. How in the world are we at 7 percent impervious percentage? He said help himunderstand how tht is even close to possible. Mr. Wong said so,if you look at the calculation,theproposedimpervious is 2.44acres, existing impervious is 2.19, so that give you gives you 0.25 acres. Take that amount, divide by 3.31, which is the total acres minus the impervious. That is the calculation that NCDNR used to calculate whether it is alow density or whether it isahigh density. We discussedthatwithMr. Farkas,and we gave him the numbers and he said yes, your calculation is correct, you areinthe low density,you are below 24 percent.So, the threshold is 24 percent. The Chair said are you saying it is below 24 percent ofthe new impervious or 24 percent of the total impervious? Mr. Wong said the total impervious. The Chair said because you are already over 24 percent impervious for the entire site before you do anything, that is the confusing part. Your existing impervious is 41.6 percent. Mr. Wong said they do not consideraswimming pool as impervious. According to Mr. Farkas, it is a holding. So, all you do is look at the other areas. You are increasing a little bit. The Chair said the County Resident Stormwater expert is not here. Mr. Murray said thisdoesstill haveto go through plan review,andso those drainage issues would have to be dealt with. 19