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r ichnrcati Apprv*e* Page 15 Task 5.5 (B) f oview_USACE Statement of Fine' s Upon receipt of the USACE Permit Instrument, ATM shall carefully review and comment on any discrepancies or permit language that could be of potential concern to the County in pursuit of the Project construction and subsequent performance monitoring. A list of such concerns and the affected conditions will be prepared for review with the County staff, after which a format response to the 'USACE requesting corrective action will be prepared. 6.0 FDEP MIXING ZONE VARIANCE 6.1 Pre -Submittal MeetjRglConfgrence withwit-DEP Following review of the initial restoration Project file, ATM shall organize and attend a pre -submittal meeting in Tallahassee with Department staff to discuss submittal requirements for variance processing and modeling srheme(s) acceptable to the Department. This meeting is proposed to take place concurrent with the Joint Coastal Permit pre -application meeting (described in Task 3.1) to optimize travel expenditures to Tallahassee. 6.2 Mixinq Zone Variance Raguest and Completeness Summary Response A Petition for Variance request will be prepared by ATM, with an anticipated north limit of the mixing zone and an adequate distance cross -shore and alongshore on the Atlantic Ocean coast to avoid water quality violations. The quality of the borrow source sand to be utilized for the nourishment Project will be better determined pending review of the borrow, source material composition with the County and will likely dictate the physical dimensions of the mixing zone which is achievable and hence requested. It is anticipated at this time that the transverse -misting model presented in Fischer et al. ("Mixing in Inland and Coastal Waters," Academic Press, Inc., 1975) will be utilized to perforin the analysis required for the Petition for Variance. Should the borrow area material composition or the regulatory agencies dictate an alternative evaluation, ATM fees for this service may require modification. Forty-five days from authorization to proceed from the County shall be sufficient to prepare the request. ATM shall respond to one agency Request for Additional Information associated with the mixing zone issue to ensure that the appropriate mixing zone is acquired. It is anticipated that the variance can be obtained in the same timeframe as the Joint Coastal Permit, and will likely be deemed complete pending completion of a singular completeness summary response. All attempts will be made by ATM to respond to the agency request within 60 calendar days of receipt of the RAI. County shall prepare a Public Notice following agency approval of the Petition for Variance methodology and computational results. ATM shall review the FDEP variance document for accuracy and shall transmit any noted changes required to the County prior to subsequent transmittal to the FDEP requesting such change(s). CONTRACT MANAGEMENT To ensure tirnely and cost-effective completion of this contract, ATM shall maintain rigid cost and scheduling controls on all work performed in association with the contract and shall adhere to the Project timeline. ATM will coordinate each of the sub -consultant contracts to establish deliverables, schedule and invoicing procedures to meet the County's requirements for payment. The following sub -consultants are currently envisioned to provide services to ATM in conjunction with this Project: Scientific Environmental Applications, Inc. Coastal Science Associates, Inc. Underwater Engineering Services, Inc. Morgan and Eklund Surveying & Mapping, Inc. For preliminary analysis, planning and design of the beachfill planform and cross- sections, it is assumed that the beach profile and associated hydrographic survey data being collected by the County under separate contract, will be sufficient for this purpose. 'AI40,4rn /Q V FesQ6WC'6N N V&W 04301"