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					                                                                                     PLT NO. _____________




             TYPICAL INFORMATION
                      FOR
          IMPROVEMENT PLAN REVIEW


                   THE INFORMATION LISTED HEREIN
                   REPRESENTS       THE     LEVEL    OF
                   INFORMATION     THAT    IS   USUALLY
                   REQUIRED      TO     EVALUATE     AN
                   APPLICATION. INFORMATION REQUIRED
                   FOR A SPECIFIC PROJECT WILL VARY
                   DEPENDING ON THE NATURE OF THE
                   PROJECT, LOCATION OF THE SITE, AND
                   THE ACTIVITY PROPOSED.




                           This is a Dynamic Document and Subject to Change at Anytime.




H:\Forms\Check Lists\IMP Plan CL.DOC                                             Revised: 10/02/01
   PROJECT NAME: ______________________________________________________




                TYPICAL INFORMATION FOR IMPROVEMENT PLAN REVIEW

PLEASE NOTE: EACH SECTION CONTAINS NUMBERED/BOLD ITEMS. THIS IS
INFORMATION WHICH IS DEEMED TO BE PROJECT CRITICAL TO THE REVIEW OF
THE PROJECT. INFORMATION OUTSIDE RECOGNIZED RANGES, OMISSION OF,
CHANGES TO, OR INCONSISTENCIES WITH THIS INFORMATION MAY RESULT IN
MAJOR PROJECT MODIFICATIONS.

A. GENERAL INFORMATION:

    1.           Preliminary Plat conditions established by the Plat Review Committee
                 (PRC) must be addressed.

    2.           Is a Right-of-Way Utilization Permit necessary for water, sewer or other
                 improvements within County Right-of-Way?

    3.           Prior to plan approval, plans shall be submitted in an electronic format.

    4.           Show the File No. PPL - _____ - _________ on the cover sheet.

    5.           Show the PPL Approval date: __________________.

    6.           Construction Access:
                 • Is the access route shown on the plans adequately?
                 • Is an alternate route needed?
                 • Is an indemnity agreement required?
                 • Is a haul road permit needed?

B. ROADWAY AND DRAINAGE INFORMATION:

    1.           Roadway profiles:
                 • Longitudinal slope (minimum slope equals:.30% for curb section)
                 • Vertical Curve Length (minimum 3 times design speed)
                 • Note on profiles: designed and recommended posted speed limit
                 • K
                 • PVI station
                 • PVI elevation
                 • A.D.
                 • Be sure inlets are at the L.P., or provide special grading information
                    for swale section.
                 • Minimum and desirable SSD

    2.           Roadway Cross-Sections;

                 Please provide appropriate roadway cross section for each roadway
                 (pavement width, r-o-w width, etc.) based upon ultimate buildout and 10
                 trips per day per lot, or use trip rate from an approved traffic study.



H:\Forms\Check Lists\IMP Plan CL.DOC        PAGE 1 OF 5                   Revised: 10/02/01
   PROJECT NAME: ______________________________________________________


    3. ____      Road details:
                 • Typical Roadway Section detail
                 • Street Intersection detail
                 • Cul-de-Sac detail
                 • Traffic Signage and marking plan: details & location per MUTCD & FDOT
                 • Concrete curbs 3000 psi @ 28 days
                 • Pavement markings must be thermoplastic.

    4.           Drainage details:
                 • Drainage structures per FDOT (Call out index number)
                 • Grout inlets to ½ the pipe diameter and cut pipes flush with structure wall
                 • Swale Detail
                 • Excavation & backfill detail
                 • Are skimmers shown on the weir(s)? If yes, provide detail(s).
                 • Flume details: cutoff walls, energy dissipaters, etc.

    5.           Does the road require centerline striping?

    6.           Minimum asphalt radius at intersection is 35’.

    7.           Note the 25 yr. &/or 100 yr. stormwater surface elevation on the DRA/DDA
                 cross sections.

    8.           Note sodded areas/items & the limits of sod. If the right-of-way areas and/or
                 drainage facilities are noted to be seeded and mulched, then a full stand of
                 perennial grass will be required prior to placing on Developers Maintenance
                 or approval of subdivision improvements.


C. HYDROLOGIC INFORMATION:

    1.           Engineering Pond Design information agrees with Geotechnical
                 Engineers recommended design parameters

    2.           Are design parameters within SCS ranges?

    3.           Soil borings must be within each DRA/DDA and must be sampled to a
                 minimum depth of 10’ below the proposed bottom of the DRA/DDA.

    4.           Depth to Seasonal high water: _________ elevation: _____________.

    5.           Depth to confining layer (aquifer): __________ elevation: __________.

    6.           Soil survey map with site denoted:
                 Note the soils within the site and the hydrologic soil group(s).

     7.          Drainage area quadrangle with site denoted.

     8.          Flood area map with site denoted.



H:\Forms\Check Lists\IMP Plan CL.DOC          PAGE 2 OF 5                       Revised: 10/02/01
   PROJECT NAME: ______________________________________________________


D. DRAINAGE INFORMATION:

    1.           Is the site in an open or closed drainage basin?
                 If open then 25 yr. Storm = 8.64” min.
                 If closed then 100 yr. Storm = 11.50” min.

    2.           DRA/DDA Draw down requirements:
                 100 yr. - Dry in 336 hrs. (14 days)
                 25 yr. - Dry in 240 hrs (10 days).

    3.           If draw down requirements above are not met, is a Mosquito Control
                 inlet needed? Provide 2 yr. Storm = 4.25 " min. - Dry in 96 hrs. (4 days).

    4.           Does the lot-grading plan agree with the storm sewer drainage basin
                 map?

    5.           Bottom elevation of DRA/DDA must be a minimum of one (1) foot above
                 the seasonal high or be designed as wet DRA/DDA.

    6.           Provide 6" of freeboard within the DRA/DDA.

    7.           Is a weir proposed? If so, post Q and volume discharge can not exceed
                 pre Q and volume.

    8.           Provide plan for proposed lot grading and drainage (types A, B, or C).

    9.           Finished Floor Elevations shall be provided for each buildable lot.

    10.          Provide the TR-55 worksheet(s) noting: CN, TC, soil group, etc.

    11.          Provide the unit hydrograph number
                    256 = flat swampy
                    323 = [some slope< 5%] little impervious.
                    484 = [steeper> 5%] somewhat impervious.

    12.          Check to see if any site drainage is running off site (e.g., subdivision
                 perimeter).

    13.          Provide percolation test location and data (Double Ring) or an approved
                 equal.

    14.          Provide drainage Calcs for: DRA/DDA, ditches, culverts, channels, swales,
                 etc. 25 yr. = 8.64", 100 yr. = 11.50"

    15.          Is pond bottom within 5' of a confining layer? If so, mounding calcs are
                 required.

    16.          Provide copy of S.W.F.W.M.D. permit when available (especially when
                 limerock is within 8' of the DRA/DDA bottom).




H:\Forms\Check Lists\IMP Plan CL.DOC           PAGE 3 OF 5                      Revised: 10/02/01
   PROJECT NAME: ______________________________________________________


    17.___       For rural roadway section: Provide driveway apron swale/culvert spec for
                 each buildable lot.

    18.          Drainage discharge structure must have a control elevation equal to or above
                 the seasonal high.

    19.          If Diversion Berm is proposed, applicant shall address concerns of
                 concentrated flow (e.g.: Tc, point of discharge, spreader swale, etc.).


E. DITCH/SWALE INFORMATION:


    1.           Drainage Calculations for an open drainage system (25 yr/24 hr storm
                 event = 8.64" min.)

    2.           For rural roadway section: stormwater in swale can not flood shoulder
                 or roadside property.

     3.          Does the swale detail on the plans match the design calculations?

     4.          Provide and check the area, mannings coefficient, time of concentration, etc.

     5.          Does the stormwater flow depth exceed the swale depth shown in the swale
                 detail?

     6.          Are soil ditch blocks required or proposed? If so, provide FDOT Index No.

     7.          Provide and check the maximum allowable velocity for each swale section:
                    Seed & Mulch = 0.0 - 2.0 fps   Lapped Sod = 4.0 - 5.5 fpa
                    Sod           = 2.0 - 4.0 fps  Ditch Pvmt. = 5.5 and over


F. STORM SEWER/ROADWAY INFORMATION:


    1.           Drainage Calculations for:     Curb & gutter     3-yr/24 hr storm event
                                                Open system       25-yr/24 hr storm event

    2.           Pipe Calculations (hydraulics)
                 • Check pipe capacity -vs- Q
                 • Is hydraulic gradeline elevation equal to or below the grate elevation
                    (up and down stream).

    3.           Pipe clearance under roadway must be 1' from outside crown of pipe to
                 bottom of road base.




H:\Forms\Check Lists\IMP Plan CL.DOC          PAGE 4 OF 5                      Revised: 10/02/01
   PROJECT NAME: ______________________________________________________


    4.           Curbed Roadway spread standards shall be based upon a rainfall
                    intensity of 4.0 inches per hour. Allowable spread is as follows:

                 •    Right-of-Way width of 150' & greater: spread shall not encroach on
                                                           the travel lane.

                 •    Right -of-way width of 80'- <150':       spread shall not exceed one
                                                               half of the travel lane adjacent
                                                               to the gutter.

                 •    Right -of-way width of 50' - 60':        spread shall be limited to 1"
                                                               below the crown of the road.

    5.           Minimum storm pipe size for either RCP or CMP’s. is 15".

    6.           Check max and min velocities in RCP and CMP
                    RCP = 20 fps, 2.5 fps CMP = 15 fps, 2.5 fps

    7.           Maximum length of pipe without an access structure
                    (15" - 18" = 350', 24" - 36" = 400')

G. PLATTING INFORMATION:

    1.           All drainage facilities (e.g., pipes, swales, berms, etc.) need to be within
                 either a 30' wide D.R.O.W. or permanent drainage easement.

    2.           DRA/DDA and conservation areas must be in separate lots.

    3.           Separate easement need to be provided to the conservation areas.




H:\Forms\Check Lists\IMP Plan CL.DOC           PAGE 5 OF 5                      Revised: 10/02/01

				
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