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M. Retention Pond Desien The retention pond design for the project was considered with Supplemental Agreement No. 1. This was an Hourly Rate Component for the project. At the time of the supplemental agreement, it was assumed that the project may include up to five (5) drainage subareas, and possibly two (2) areas where existing and/or proposed storm water management facilities could be utilized. The designs on several of the facilities have been completed and need to be re -engineered due to several factors: 1) realignment of SR -510, east of US -1; 2) preparation of several alternative sites at the Graves Brothers, Kennedy and Red Stick properties; 3) evaluation of the storm water management system north of SR -510 and east of 58`h Avenue, to provide alternatives to retention; 4) preparation of alternatives, on the Gordon property, to evaluate an additional retention facility on the property, in lieu of proposing to pipe and fill the existing ditch in front of the Paladin property for compensatory storm water storage; 5) preparation of alternatives on the Kennedy property, which considered the size, and if additional storage could be sent to an already approved permitted facility on the Bristol Bay development; 6) a revision to the Red Stick property permit for accepting project drainage from CR -510 and 58th Avenue; 7) revisions to the approved CVS site permit, based upon drainage routing modifications that will alter previous plans to include retention facilities on the Graves Brothers property north of CR -510, and west of US -1; 8) an overall project evaluation of ground water penetration, as the results of several hand augers have provided information that differs from the preliminary drainage report, and is significantly different in elevation; and 9) the appropriate level of calculations, as per the St. Johns Water Management Control District, specifically, Chapter 11 of the handbook, to address a new requirement for water quality on the removal of phosphorus from the project storm water management system. This effort/fee will be contained under the Lump Sum Components of the Roadway Design, in "Section V — Compensation." N. Maintenance of Traffic (MOT,) Plans Maintenance of Traffic plans will be required, to address several unique conditions of the project that were not originally anticipated. The original project, and up to Supplemental Agreement No. 1, addressed the intersection improvements of CR-510/SR-510 and US -1, with the addition of the approaches. After submission of the revised 30% plans, which included the revisions, the project alignment went through multiple reviews. At the time, the MOT plans were to be prepared in a generic fashion, and only to include typical section details, MOT notes for construction and abbreviated plan sheets details for construction phasing. The reviews from the alignment required multiple reverse curves and the raising of the US -1 intersection by approximately 5 -feet, which will require the preparation of more sophisticated MOT plans, to address; 1) multiple stages; 2) evaluation of fill/embankment and temporary 0