PART Response to Information Request · OPW11/0335

                                                                                                                                                                                                                                                                     RL 4.00 DWELLING FFL MIN

                                                                                                                                                                                                                                    DWELLING PAD RL 3.50 M
                                                                                                                                                                                                                                                                          4




                                                                                                                                                                                                                                                                                   a
                                    RL 3.25
                          RL 3.20
                   4         _


                                                               0
        RL 2.50 (NGL)    O
       v
                                                    RL 2.30


                                                                                                         3m




  SECTION 'A-A' - BIORETENTION BASIN CROSS-SECTION

   NOTES:
   1   EXISTING WETLAND BUFFER TO NATIONAL PARK
   2   ROCK ARMOURED SPILL WAY (3 OF), 1m BASE WIDTH, 1:3 SLOPE SIDE WALLS - SUBJECT TO DETAIL
       DESIGN
   3      BIORETENTION BASIN
          500mm FILTER DEPTH
          SANDY LOAM FILTER MEDIA, 60% 0.45mmES,150mmlhr HYDRAULIC CONDUCTIVITY, <1000mg/kg TOTAL
          NITROGEN, <80mg/kg ORTHOPHOSPHATE, -3% ORGANIC MATTER CONTENT
          200mm EXTENDED DETENTION DEPTH
          SUBJECT TO DETAIL DESIGN
  4       IMPERMEABLE GEOMEMBRANE SIDE-WALL LINER
  5       PERMEABLE GRAVEL BASE LAYER, 200mm DEPTH, 5-20mmES NO-FINES COARSE GRAVEL
  6       BIORETENTION BASIN PLANTINGS. TURF SPECIES SUITABLE FOR INUNDATION. SOURCE SUITABLE
          PLANTS FROM APPENDIX A OF THE WATER SENSITIVE URBAN DESIGN MANUAL
  7       INLET ROCK DIFFUSER
  8      STORM DRAIN INLET ENERGY DIFFUSER. SEE DETAIL A
  9      STORM DRAIN INLET PIPE
         500mm DEPTH OF COVER TO BE MAINTAINED WHERE POSSIBLE
         WHERE HYDRAULICS REQUIRE LESS THAN 500mm DEPTH OF COVER, PIPE TO BE CONCRETE CASED
         WITH 200mm DEPTH OF COVER
  10     GRASSED CATCH DRAIN (SWALE), 200mm DEEP 1:130 FALL ALONG LENGTH TO SUIT 1:5 ARI STORM
         EVENT
         TRAILING EDGE TO BE FILLED TO PROVIDE 200mm DEPTH AND TO ACCOMODATE FALL TO
         BIORETENTION BASINS
  11     BOLLARDS TO SUIT SITE AESTEHTICS
  12     DWELLING PADS. 3.5mRL MINIMUM TO 6.OmRL.
         BIORETENTION BASIN C1A LOCATED AT 4.OmRL
  13     GRASSED BATTER AT 1:4 GRADE
  14     INLET ROCK DIFFUSER GEOTEXTILE WRAPPER                                                                                      DETAIL A - SCOUR PROTECTION DEVICE GENERAL ARRANGEMENT
  ALL RL'S IN mAHD. DIMENSIONS AS MARKED. FINISHED GROUND LEVELS ARE INDICATIVE ONLY AND
  SUBJECT TO FINAL ADJUSTMENT ON SITE
(LINT DETANS                                                              REVISION S(I(DUE                          DATUM                    feel Wn,
                                     um

CONTRAST CONSTRUCTIONS               ESSENCE OF PERIGIAN
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                                                                                                                                                  'dt . ttw U. rt^r tk~y . s&a    Simmonds & Bristow Pty. Ltd.                                                    DRAWING TITLE
                                                                                                                                                                                                                                                                  BIORETENTION BASIN
                                                                                                                                                                                                                                                                                                 SCALE


                                                                                                                                                                                                                                                                                                    AS SHOWN
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                                                                                                                                                                                  WATER & ENVIRONMENTAL ANALYSTS & CONSULTANTS                                    AND WETLAND
                                     STORMWATER TREATMENT                                                           DESIGNED    TA       I Oif     k U.. etc tok .ifw Mlle inrk
                                                                                                                                                                                                                                                                  SHORT CROSS-SECTION            JOB/PROPOSAL No.
                                                                         C 13/01/12 GENERAL UPDATE            TA DRAWN         TA           tk,.S010 k d W

                                     DESIGN                              E3 06/01/12 GENERAL UPDATE           TA (NECKED       DJB
                                                                                                                                             Aq 6-p- to b -We' t1 S S 8 f.
                                                                                                                                             rmmm kto<e"" mt tk M                 uRO WO SIIHT. NuaOFA ANr
                                                                                                                                                                                                                                                                  SECTION A-A                      1108-155C
                                                                                                                                         S   W 6k*kms n -WasOI       ftftd        0 box 3" yumu aC4 4 usm"                                                                                                             REV
                                                                               19/12/11INITIAL VERSION        T. sl(^N^o                                                          Al NmmM
                                                                                                                                                                                                                                                                                  CONCEPT ONLY
                                                                                                                                                                                                                                                                                    DATE 13/01/12 1108- 155( -01 -05
                                                                                                                                                                                  FAX0m""             ... Helping you make good dean water
                                                                         REN    DATE   I (OMM(NIS             NTL   OATS                                                                                                                     A.C.N. 010 252 418               R