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20 -. <br /> plant materials to be retained and proposed <br /> plantings and screenings , including areas to <br /> preserved as vegetated buffers along <br /> drainageways and undisturbed areas for runoff <br /> infiltration . <br /> 6) Title ; north arrow; scale; names of owners, <br /> • developer and person responsible for plan <br /> preparation ; and the date that the plan was <br /> drawn or subsequently revised . <br /> 7) Location of all areas on the site subject to <br /> flood hazard or inundation as shown on flood <br /> maps or soils maps . <br /> 8) Location of all water courses on the site, <br /> including direction of flow. <br /> 9) Existing and proposed topography at a contour <br /> interval of five [5) feet based on mean sea <br /> level datum <br /> b) Statement from appropriate public service agencies <br /> concerning the method and adequacy of water supply <br /> and wastewater treatment , including the approval of <br /> a, secondary wastewater treatment site in the event <br /> of failure of the primary septic tank system . <br /> C) Building plans for all existing and proposed <br /> buildings, including floor plans and cross—sections <br /> showing the proposed use of all portions of such <br /> buildings . <br /> 0) Statement from the appropriate public service <br /> agencies concerning the provision of fire , police <br /> and rescue protection to the site and structures . <br /> E) Detailed plans for controlling the first one—half <br /> [1/2) inch of runoff from all impervious surfaces , <br /> including the capacity of infiltration , retention , <br /> detention or other control measures . <br /> F ) Design , layout and construction specifications <br /> for runoff control measures , including methods for <br /> protecting undisturbed areas during and after <br /> construction . <br /> 0) Identification and protective measures for erodible <br /> soils [K factors greater than 0 .36 in Orange County <br /> Soil Survey) , alluvial soils , steep slopes [greater <br /> than 15%) , floodplains and wetlands . <br /> H ) Inventory of all hazardous materials produced, <br /> stored , used on—site or tranported to or from the <br /> site as defined by EPA ' s Hazardous Substances or <br />