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<br />Appropriation of Public Wa~
<br />Permit approval is required for the appropriation of water from:
<br />1. A public water basin or wetland wholly within Hennepin
<br />or Ramsey County which is less than SOO acres in
<br />surface area.
<br />2. A protected watercourse which has a drainage area of
<br />less than 50 square miles.
<br />Applicants requesting approval to appropriate from public waters
<br />must complete an Appropriation Checklist (available from the
<br />RCWD office).
<br />
<br />Bridge or Culvert Construction and Repair
<br />Bridge or culvert construction and repair on creeks, public
<br />ditches, or major tributaries requires penni! approval.
<br />Necessary exhibits lD accompany the application include:
<br />A. Construction details showing
<br />. existing and proposed flow line (invert) elevations
<br />end details with flared end sections and rip rap
<br />(energy dissipaters).
<br />. size and description of structure
<br />. emergency overflow elevation and route.
<br />S. Construction schedule.
<br />C. Narrative describing construction methods.
<br />D. Erosion-Sediment Control Plan (see below).
<br />E. Computations of watershed area, peak flow rates, and
<br />discussion of potential effects on water levels above
<br />and below the project area.
<br />
<br />Shoreland Alteration Plans
<br />Alteration of the beds, banks, and shoreland of lakes and
<br />streams may require permit approval. Most activity is regulated
<br />by the Minnesota Department of Natural Resources and/or
<br />municipalities. Actio~s requiring a permit from the watershed
<br />district are limited to review of structure and septic field setbacks
<br />within the cities of Centerville, Columbia Heights, Fridley, New
<br />BrighlDn, SI. Anthony, and Spring lake Park. Additionally
<br />topographic alterations (grading and filling) within the distances
<br />specified above under land Development and Final Site
<br />Drainage -Plans will require watershed district approval.
<br />Necessary exhibits to accompany an application are:
<br />A. Site plan showing building setback from the ordinary
<br />high water elevation.
<br />B.' Grading and Sediment-Erosion Control Plan (see p. 3).
<br />
<br />Rough Grading Plan
<br />Rough Grading Plans are issued to regulate earthwork on sites
<br />which will eventually require either a land Development Plan or
<br />Final Site Drainage Plan, but for which development plans have
<br />not been finalized. Construction of impervious surfaces or
<br />structures is not generally allowed with this pennil.
<br />Necessary exhibits Include:
<br />A. Grading and Sediment.Erosion Control Plan (see
<br />below).
<br />S, Delineation of any ditches, floodplain, and weUand
<br />areas.
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<br />Stormwater Management Plan
<br />1. A detailed sile topographic plan showing existing
<br />grades and all hydrologic features such as ditches,
<br />weUands, floodplains, culverts, and storm sewers. The
<br />plan should identify tributary subwatersheds and on-
<br />site drainage paths.
<br />A delailed site topographic plan for the proposed
<br />project conditions which clearly indicetes alterations 10 3.
<br />existing grades and topographic features. The 'plan
<br />should ouUine changes in subwatershed diVIdes,
<br />emergency overflows, and drainage ways.
<br />Calculations demonstrating that post-development,
<br />peak discharge rates are not increased over existing
<br />conditions for the 1. and 100.year storm events.
<br />Calculations demonstrating that detention facilities
<br />have been designed with permanent pooi volume 5.
<br />sufficient to retain the runoff from a 2.5-inch rainfall.
<br />Design details for outlet control structures showing use
<br />of a skimmer or submerged outlet sufficient to prevent 6.
<br />surface discharge from pond facilities for a 1-year
<br />design storm.
<br />Tabulation of normal, 1-, and 100-year flood elevations 7.
<br />for all lakes, ponds, ditches, creeks, and weUands.
<br />Checklist and calculations demonstrating that
<br />Infiitration BMPs have been incorporated into the
<br />project to the extent feasible (refer to Infiitration
<br />Brochure).
<br />
<br />2.
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<br />3.
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<br />4.
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<br />5.
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<br />6.
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<br />7.
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<br />Grading and Sediment-Erosion Control Plan
<br />1. Existing and proposed topographic map which clearly
<br />indicates all hydrologic features and areas where
<br />grading will expose soils to erosive conditions. The
<br />plan should also indicate the direction of all site runoff.
<br />Tabulation of the construction implementation
<br />schedule.
<br />Name, address, and phone number of party
<br />responsible for maintenance of all erosion control
<br />measures~
<br />Identification of all temporary erosion control measures
<br />which will remain in place until permanent vegetation is
<br />established. Exampies include, but are not limited to:
<br />seeding, mulching, sodding, silt fence, erosion control
<br />matting, and hay bale filler baniers.
<br />Identification of all permanent erosion control measures
<br />such as outfall spillways and riprap shoreline
<br />protection, and their locations.
<br />Copy of MPCA Notification of application for an NPDES
<br />general permit for projects with over 5 acres of graded
<br />area.
<br />Minimum floor elevations for ail structures reflecting
<br />District 2-fcot freeboard requirement for 1 GO-year
<br />floods.
<br />Tabulation of ail earthwork cut-and-fill volumes and
<br />computation of any floodplain volume andlor weUand
<br />area changes.
<br />
<br />2.
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<br />4.
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<br />8.
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