Response to Information Request - Received on 19/04/2012 · OPW11/0335

       ~
            O.5m          2.Om          4.Om
                                                                                                                                                                                                                                                                                               SCALE (mm)
       -- -
       - - -

       Om          1.0m          3.0m          5.0m

                                                                                                                                                                                                                                                                                                       50                  150
                                                                                                                                                                                                                                                                                                        ..... -
                                                                                                                                                                                                                                                                                               .....        -

                                                                                                                                                                                                                                                                                              o               100                     200




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                                                                                                                                                                                                                                  400mm



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                                                                                                                                                                                             DETAIL A                    -
                                                                                                                                                                                                                             ANTI SCOUR DEVICE GENERAL ARRANGEMENT

                                                                                                                                                                             NOTES:
                    CD                                                                                                                                                       1      WETLAND BUFFER TO NATIONAL PARK
                                                                                                                                                                             2      ROCKARMOURED SPILLWAY, 1m BASE WIDTH, 1:3 GRADE WALLS IN GRASSED
                                                                                                                                                                                    BATTER AT 1:4 SLOPE WITH ROCK APRON                                              -
                                                                                                                                                                                                                                                                         SUBJECT TO DETAIL DESIGN
                                                                                                                                                                             3      BIORETENTION TRENCH
                                                                                                                                                                                    SANDY LOAM FILTER MEDIA, 60% 0.45mmES, 150mm/hr HYDRAULIC
                                                                                                                                                                                    CONDUCTIVITY
                                                                                                                                                                                    <1000mg/kg TOTAL NITROGEN, <80mg/kg ORTHOPHOSPHATE, -3% ORGANIC
                                                                                                                                                                                    MATTER CONTENT
                                                                                                                                                                                    PERVIOUS GRAVEL BASE, 200mm DEPTH, 5-20mm ES GRAVEL
                                                                                                                                                                                    IMPERVIOUS GEOMEMBRANE SIDE-WALL LINER
                                                                                                                                                                                    SEE DRAWING 1108-155C-05 FOR MORE DETAIL
                                                      \                                                                                                                             SUBJECT TO DETAIL DESIGN
                                                                                                                                                                             4      PIPED INLET FROM STORMWATER DRAINS WITH ANTI-SCOUR DEVICE                                                                                  -
                                                                                                                                                                                                                                                                                                                                   SEE
                                                                                                                                                                                    DETAIL A
                                                                                                                                                                             5      BIORETENTION TRENCH EDGE SHEET-FOW ANTI-SCOUR DEVICE, 65mmES RIVER
                                                                                                                                                                                    ROCK IN GEOTEXTIE                             -
                                                                                                                                                                                                                                      SEE DRAWING 1108-155C-05 FOR MORE DETAIL
                                                                                                                                                                             6      INTERCEPTOR DRAIN/SWALE INLET TO BIORETENTION TRENCH
     BIORETENTION TRENCH LAYOUT                                          _.L
                                                                                                                                                                                    SEE DRAWING 1108-155C-05 FOR MORE DETAIL
    SEE DWG 1108-155C-05 FOR FURTHER DETAIL                                                                                                                                  7      BOLLARDS TO SUIT SITE AESTHETICS
                                                                                                                   DATUM                                                                                                                                                    DRAWING TITLE                          S(ALE
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