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BOOK 96 PAE 5,9 <br />would require buffering; however, such buffering may not be <br />feasible or even desirable at the end of a project where new <br />residences could be buffered from normally desirable lake -front <br />views. Therefore, staff could support the type of changes <br />described in alternatives 1 or 5. <br />At its October 19, 1995 meeting, the PSAC discussed, at length, <br />various options for developers to request timeframes in excess of <br />2 months to excavate and remove fill from a development site. The <br />PSAC settled on a compromise motion to recommend keeping the 2 <br />month limitation in place but allow a special, alternative permit <br />process that: <br />1. Could be used by applicants who could justify (for <br />environmental or stormwater reasons) an extended period.of <br />time for hauling material from a particular development site. <br />2. Would allow an initial 4 month period for off-site hauling <br />with the possibility of a 6 month extension, if warranted. <br />The total maximum time for off-site hauling would be 10 <br />months. <br />3. All other."incidental to construction" criteria would apply, <br />including the 12' maximum lake depth limitation. No special <br />buffering or setback criteria would apply. <br />This compromise motion is consistent with alternative 5 and is <br />justifiable for reasons previously described. <br />•Timeframes for Long -Term Commercial Mines <br />The current Chapter 934 LDRs require timeframes to be established <br />for all long-term commercial --mining operations. However, in <br />practice, the county has essentially acknowledged timeframes <br />proposed by applicants and has extended the timeframes of <br />operations via annual mining permits. The existing LDRs contain no <br />specific guidelines for timeframes. <br />In its survey of other counties, staff found that a majority have <br />no definitive time limits on long-term commercial mining operations <br />(Brevard, Collier, Palm Beach, Volusia). The other surveyed <br />counties have various time limits, all of which can be extended by <br />county approval (Martin, Sarasota, St. Lucie). Martin County <br />imposes a 3 year time limit which can be extended. St. Lucie <br />County imposes a 6 year time limit for mines under 20 acres in size <br />and a 20 year limit for larger mines; both limits can be extended. <br />Sarasota County imposes time limits that correspond to the quantity <br />of material to be removed, as follows: <br />Less than 10,000 cubic yards.................................1 year <br />10,000 - 99,999 cubic yards.................................2 years <br />100,000 - 500,000 cubic yards...............................5 years <br />over 500,000 cubic yards...................................10 years <br />Note: commercial mining operations in Indian River County usually <br />exceed 500,000 cubic yards of material removed over the life of the <br />mine. For example, an 11 acre excavation pit with an average depth <br />(below ground level) of 10' would yield approximately 532,400 cubic <br />yards. <br />Sarasota County's approach of setting specific timeframes based on <br />the amount of material to be removed is reasonable in staff 's <br />opinion. In addition to these timeframes, a 6 month reclamation <br />and restoration deadline could be established. For example; a <br />600,000 cubic yard mine would need to be closed -down at the end of <br />10 years, and at the end of 10 years and 6 months, the site would <br />need to be reclaimed and restored. Such restoration generally <br />includes: final grading, grassing slopes, and establishing littoral <br />12 <br />November 14, 1995 <br />