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PART Response to Information Request · OPW11/0335
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DETAIL A - ANTI SCOUR DEVICE GENERAL ARRANGEMENT
NOTES:
1 WETLAND BUFFER TO NATIONAL PARK
ROCK ARMOURED SPILLWAY, 1m BASE WIDTH, 1:3 GRADE WALLS IN GRASSED
BATTER AT 1:4 SLOPE WITH ROCK APRON - SUBJECT TO DETAIL DESIGN
BIORETENTION BASIN
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
PIPED INLET FROM STORMWATER DRAINS WITH ANTI-SCOUR DEVICE - SEE
DETAIL A
BIORETENTION BASIN EDGE SHEET-FOW ANTI-SCOUR DEVICE, 65mmES RIVER
ROCK IN GEOTEXTIE - SEE DRAWING 1108-155C-05 FOR MORE DETAIL
INTERCEPTOR DRAIN/SWALE INLET TO BIORETENTION BASIN
BIORETENTION BASIN LAYOUT
SEE DRAWING 1108-155C-05 FOR MORE DETAI
SEE DWG 1108-155C-05 FOR FURTHER DETAIL BOLLARDS TO SUIT SITE AESTHETICS
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