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• 6835 Preliminary Plat Application 18-3999 Southways Addition Page 3 and maintenance activities, designate who will conduct inspection and maintenance activities, and outline reporting requirements. 1.13 Clear drive lanes must be maintained on Brackets Point Road during construction. The Contractor will have to exercise care during mobilization of equipment to not block traffic,and parking for construction workers should be restricted to on-site only. The Contractor should submit a Traffic Control Plan prior to any work. Access must be maintained to properties south of site at all times. Plan should be approved by Fire Department and/or applicable emergency services. 1.14 A fmal estimated cost of proposed improvements,matching approved plans,must be submitted in order to determine the total Letter of Credit(LOC)amount. The LOC must be written to 150%of cost of improvements and submitted prior to any land disturbing activities. Estimated costs should include grading,erosion control,utilities, street construction,vegetation management,buffer establishment,temporary stabilization,and final stabilization. 1.15 Development grading,including the storm ponds and drainage ways, should be completed prior to acceptance of the development and release of the escrow. In addition, a copy of MCWD approval for the Stormwater Management system should be submitted prior to issuing any Certificates of Occupancy. 1.16 Record drawings must be submitted upon completion of the project. 2.0 PRELIMINARY PLAT/SITE PLAN: 2.1 A Flowage and Conservation easement will be required over any wetlands to remain. 2.2 Drainage and Utility Easements should be provided as follows: a. Over all stormwater management facilities used to meet regulatory requirements. b. All swales and storm sewer providing drainage for multiple properties. c. 5' along all side lot lines, unless adjacent to Development boundary. d. 10' along all front lot lines, rear lot lines, and adjacent to Development boundary. 3.0 PRELIMINARY GRADING PLAN: 3.1 Perimeter erosion control should be installed by the Contractor and inspected by the City prior to any other work. Contractor must provide a minimum 24 hour notice prior to inspection. 3.2 Facilities necessary to meet regulatory requirements should be installed and the site mass- graded at the same time as street construction to ensure all drainage ways and watersheds are constructed per the approved Stormwater Management Plan. If done piece-meal,coordination of required stormwater management facilities can be difficult,and facilities required may be forgotten during future construction. 3.3 Pond emergency overflows should be provided at the predicted 100 year high water level and armored with Turf Reinforcement Mat(TRM). 3.4 Additional spots and revised contouring should be provided in several areas to ensure a minimum 6"swale depth is provided for swales providing conveyance to wet retention ponds per the approved Stormwater Management Plan. These spot elevations should be confirmed with record drawings prior acceptance of development. 3.5 The grading adjacent to the road should be revised as necessary to provide a minimum 2' depth for the ditch in the rural section per the City Standard Detail or follow the curb line in the urban section. H:\ORNO\C13115486\z-18-3999_Brackets Point\Southways PrePlatReview-1 2018-o1.09.docx Bolton&Menk is an equal opportunity employer.