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Discussion of Benefits and Disadvanta es — <br />Like the gravity flow system, there is need for only one electric service and therefore <br />exposure to possible power problems is limited. A vacuum system has high velocity <br />sewage flow, which minimizes settlement of solids. <br />The system should only be higher maintenance than a typical lift station due to the <br />addition of the vacuum pumps. Also, the vacuum system has less storage volume <br />compared to a typical lift station. Therefore, the system will run more often than a lift <br />station, which may create more noise and potential odor problems. <br />The system should be watertight since it must maintain an active vacuum. This should <br />make the system very robust during flood conditions. However, it can be troublesome <br />to detest "'h� 1"�O � L U "hcy do p yeriy dcsigncu system inciudes <br />., .. c.re ., u arc, ACaciu i♦ c occili. h rU <br />isolation devices to aid in detecting leak locations. <br />Hazard Mitigation Funding: <br />FEMA has a number of funding programs to respond to emergencies, both in a reactive <br />mode after an emergency and in a proactive mode in anticipation of future emergencies. <br />FEMA currently has three mitigation grant programs: the Hazards Mitigation Grant <br />Program (HGMP), the Pre -Disaster Mitigation program (PDM), and the Flood <br />Mitigation Assistance (FMA) program. Section 404 of the Hazard Mitigation Grant <br />Program (HMGP) provides grants to States and local governments to implement long- <br />term hazard mitigation measures after a major disaster declaration. The PDM and FMA <br />programs do not appear to apply to the type of funding required for this project. <br />As a first step in applying for funding under FEMA grant programs, PBS&J completed <br />and submitted a Local Mitigation Strategy (LMS) Mitigation Measure Proposal Form. <br />The project has been approved by the LMS Board and is now on the approved LMS list <br />that will be considered for funding by HMGP. <br />The second step is to complete and submit a "State of Florida — Joint Hazard Mitigation <br />Grant Program & Flood Mitigation Assistance Application" (Form). The County <br />authorized PBS&J to complete the HMGP/FMA application form for possible funding. <br />A draft HMGP/FMA application is attached. It does not appear that funds will be made <br />available from FEMA for several months. If funding is needed for this project to start <br />immediately, normal funding should be considered as an at -risk option. <br />Reimbursement from FEMA can be obtained at a later date if the project is approved <br />for funding through a FEMA grant. <br />Page 6 of 7 <br />F.WIdllies\UFILITY-ENGIN ER GTrojcas-Usili1y Ccto"cnnn PcmmVRC- Roclndgc Sewec FEMAMitigazlon UCP p 252 IV BS&I Engincemng Repon\TecF Memo <br />Rochldge - Vacuum Option. doc <br />