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SPECIAL CONDITIONS FOR PERMIT NO. 14-15 FOR REPLACEMENT OF EXISTING BRIDGE ACROSS LATERAL "G" CANAL AT 69TH STREET ALIGNMENT WITH 1VHNIMUM 90" DIAMETER REINFORCED CONCRETE PIPE STRUCTURE (1) This permit is issued based on plans entitled "69th Street Bridge over I.R.F.W.C.D Lateral "G" Canal - I.R.C. Project # 1363", designed, signed and sealed by Christopher J. Kafer, P.E., Dated 07/29/14. (2) The proposed 90" diameter R.C.P. culvert in Lateral "G" Canal shall be installed with a north (upstream) invert of 9.50' (NAVD) elevation and a south (downstream) invert elevation of 9.33' (NAVD). The proposed 32 11 of 72" diameter R.C.P. outfall culvert connection from sub -lateral G-4 (69th Street) canal into proposed minimum 90" diameter R.C.P.' in Lateral "G" canal can be reduced to a minimum 60" diameter R.C.P. (3) (4) Any proposed dewatering plan for construction of subject culvert structure is subject to the following conditions: (A) Drainage within lateral "G" canal and sub -lateral G-4 (69th Street) canal shall be provided and maintained at all times during construction. (B) For Lateral "G" the permittee/contractor may provide a total maximum by- pass pumping capacity of 67,000 gallons per minute on-site and operational (as may be needed) at all times. (C) For sub -lateral G-4 (69th Street) canal the permittee/contractor shall provide a total maximum by-pass pumping capacity of 6,400 gallons per minute on-site and operational (as may be needed) at all times. (D) Any and all proposed dewatering plsns for this project shall be approved in advance of proposed project construction by Indian River Farms Water Control District Superintendent of Operations, David E. Gunter (Phone Number 772- 562-2141). (E) Any proposed sheeting, berms, or other temporary blockage within Lateral "G" Canal and sub -lateral G-4 (69th Street) canal shall be coordinated with Superintendent David E. Gunter on a day-to-day basis throughout the construction phase. " (F) In the event a severe rainfall event occurs, or is expected to occur, resulting in canal stage/flow that exceeds the upstream by-pass pumping capacity, the permittee/contractor shall be able to immediately remove all temporary blockages within the canals, and provide a full capacity flow in said canals, as may be required in an emergency condition. J:\IvIEC\SPEC COND-PROVISOS\irfwcd-special cond permit # 14-15.docx