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CHRONOLOGICAL HISTORY OF REVEGETATION & BOND RELEASE <br />As of 2016, all disturbed areas not deemed permanent have <br />been seeded. Total areas seeded and revegetated prior to 2016 <br />are shown on 2012 annual reclamation report Chronological <br />Seeding Map. SCC submitted SL -5 requesting Phase II bond <br />release on eligible areas, which was approved on approximately <br />798 acres (as shown in Figure 2). <br />The Report of Findings for Revegetation Success for Phase II <br />Bond Release will be submitted separately. <br />SEDIMENTATION POND SURVEYS <br />SCC monitors sedimentation ponds for sediment storage <br />capacities. Up through 2015, this monitoring was conducted <br />by physically surveying each pond each year. This schedule <br />provided a sediment yield history and gave advanced warning <br />to operations personnel when sediment clean-out work was <br />needed. Also, SCC visually inspects each pond, at a minimum, <br />quarterly each year. During these inspections, any significant <br />observed change in sediment storage or noticeable expansion <br />of the sediment delta at the inlet to the pond are noted as <br />conditions requiring pond maintenance. , <br />Because the mined areas have been reclauned and revegetated <br />for several years, the available storage capacities typically do not Q <br />change significantly from year to year, so a request was Figure 1: Phase II Bond Release Area (798 <br />submitted and approved to monitor sediment accumulations on a acres) <br />5 -year schedule for ponds that flow year-round and to visually <br />inspect any other ponds. The results of the 2014 annual survey indicated that all ponds are above the <br />minimum requirement for storage as summarized by Table 13.3, Sediment Pond Capacities. <br />Pond ID <br />Capacit}� <br />. �#'_� <br />Required <br />1 <br />(ac -ft) <br />Current Ren-iaining Fater Capacity" <br />E@s {j�a l� 4.1•µa,..a�;�fNi� �3#[# --e���3�:� `�.#5J! <br />(ac -ft) <br />-7 <br />Decision <br />Reference <br />i7 # <br />•®®�®®®: <br />11 <br />(1) Based on SEDCAD rerx& far a 10y"r/24 hr iiorm eaext. <br />(2) Beniairtis# caaci &e&os �irinciia&rbi&&s ay ar orrjfre. <br />STOCK TANKS <br />There are currently 11 stock -tanks or stock -ponds in the Seneca IIW area, and all are permanent. Inspections <br />reports for all stock -ponds have been previously submitted. No new stock-ponds//tanks were constructed in <br />2016. <br />5 <br />