Minutes 03-17-2015 - Laserfiche WebLink

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form in attachment 1 with a schedule to bring this forward for approval at the May quarterly public hearing. He reminded the Board of the current methodologies for modifying existing impervious surface allowances. Michael Harvey said this proposal looks to incorporate a current state practice that will allow for the installation of a stormwater feature, called best management practices (BMPs), to allow for additional impervious surface to be installed on a lot. He said this is outlined in attachment 2. He said staff is requesting the Board to approve the outline form to allow them to move forward with the ordinance amendment process and to give direction on several other questions. Commissioner Jacobs referred to page 11 and item 4b-ii. He asked about the example of increasing impervious surface by 50 percent in the University Lake watershed protection overlay district. Michael Harvey said the impervious surface would not be raised by 50 percent. He said under the state programming, if you have a certain amount— say 3,000 square feet - of permeable pavement, you could receive as much as 75 percent of additional impervious surface on the lot based on that amount of pavement. He said staff is studying the need for a cap. Commissioner Jacobs asked if staff has talked to OWASA about this. Michael Harvey said that will be part of the peer review. He said authorization would be needed from the Board prior to the peer review process. Commissioner Jacobs asked if owners will have to maintain the BMP. Michael Harvey said yes, a management agreement will have to be recorded at the register of deeds office, and the owners will have to agree to maintain the system. Commissioner Jacobs asked if more staff will be hired to monitor these BMPs. Michael Harvey said this was one of the cons listed. He said he is not sure if more staff will need to be hired, but there will be an increased level of required enforcement. Commissioner Jacobs said he thinks of BMPs from an agricultural standpoint, and these can be a fairly substantial facility. He asked if these could possibly be a neighborhood hazard if not properly maintained. Michael Harvey said that could be a potential problem. Commissioner Jacobs asked if the state standards are higher or lower than Orange County's standards. Michael Harvey said Orange County is more restrictive than the state. He said Orange County chose to be more restrictive in these areas due to the fact that these are primary water sources. Commissioner Jacobs said basically the Board is authorizing staff to take this to a public hearing. Michael Harvey said yes. Commissioner Jacobs said there have been past discussions about a septic tank monitoring system, and if people are going to be putting in BMPs, perhaps they should be paying a fee for monitoring. He said these enhancements can potentially have an adverse effect on other people's properties and on County resources. He said most people do not give a lot of thought about monitoring their septic systems and the protection of groundwater resources. Michael Harvey said the impervious surface limit is important for the County's participation in the state watershed management program. He said there are separate regulations governing the installation of stormwater devices. He said this is regarding a voluntary program where a property owner would be engaging in the installation of a stormwater feature (BMP) with the benefit of receiving additional impervious surface. He said