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16-001014-02A (Ultimate SCMMP)
Attached to the e-mail Operational Works Application OPW16/0203 - 4 of 4.
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WQCP DESIGN ASSESSMENT CHECKLIST - BASED ON WBD WSUD TECHNICAL DESIGN GUIDELINES
WETLAND DESIGN ASSESSMENT CHECKLIST
Asset I.D. Central Basin (WQCP)
Wetland Refer to Operational Works Drawing No. 16-001014-400 Series and latest issue of SWMP Report No. 16-001014-01.
L ti
Hydraulics: Design operational flow (m3/s): 5.07 Above design flow (m3/s): 5.07
Area: Catchment Area (ha): 13.9 Wetland Area (ha): 0.194
TREATMENT Y N Comment
MUSIC modelling performed? Y Refer to latest issue of SWMP Report No. 16-001014-01.
INLET ZONE Y N Comment
Discharge pipe/structure to inlet zone sufficient for maximum design flow? N/A Inlet zone/pond is not applicable as runoff is pretreated by GPT and Bioretention
Basins with energy dissipaters at outlets into basin
Scour protection provided at inlet for inflow velocities? N/A Scour Protection provided for inflows into pond.
Configuration of inlet zone (aspect, depth and flows) allows settling of particles N/A No Inlet Zone provided, refer to comments above
>125μm?
Bypass weir incorporated into inlet zone? N/A No Inlet Zone provided, refer to comments above
Bypass weir length sufficient to convey 'above design flow' ? N/A No Inlet Zone provided, refer to comments above
Bypass weir crest at macrophyte zone top of extended detention depth? N/A No Inlet Zone provided, refer to comments above
Bypass channel has sufficient capacity to convey 'above design flow'? N/A No Inlet Zone provided, refer to comments above
Bypass channel has sufficient scour protection for design velocities? N/A No Inlet Zone provided, refer to comments above
Inlet zone connection to macrophyte zone overflow pit and connection pipe sized to N/A No Inlet Zone provided, refer to comments above
convey the design operation flow?
Inlet zone connection to macrophyte zone allows energy dissipation? N/A No Inlet Zone provided, refer to comments above
Structure from inlet zone to macrophyte zone enables isolation of the macrophyte N/A No Inlet Zone provided, refer to comments above
zone for maintenance?
Inlet zone permanent pool level above macrophyte permanent pool level? N/A No Inlet Zone provided, refer to comments above
Maintenance access allowed for into base of inlet zone? N/A No Inlet Zone provided, refer to comments above
Public safety design considerations included in inlet zone design? N/A No Inlet Zone provided, refer to comments above
Where required, gross pollutant protection measures provided on inlet structures Y GPT's and upstream Bioretention Basins provided at inflow locations to WQCP
(both inflows and to macrophyte zone)
MACROPHYTE ZONE Y N Comment
Extended detention depth >0.25m and <0.5m? Y Extended Detention Depth = 400mm
Vegetation bands perpendicular to flow path? N/A Not Applicable - A WQCP is proposed not a wetland. Furthermore the Pond is not
required to meet site WQO's.
Appropriate range of macrophyte vegetation (ephemeral, shallow, marsh, deep N/A Not Applicable - A WQCP is proposed not a wetland. Furthermore the Pond is not
marsh)? required to meet site WQO's.
Sequencing of vegetation bands provides continuous gradient to open water zones? N/A Not Applicable - A WQCP is proposed not a wetland. Furthermore the Pond is not
required to meet site WQO's.
Vegetation appropriate to selected band? N/A Not Applicable - A WQCP is proposed not a wetland. Furthermore the Pond is not
required to meet site WQO's.
Aspect ratio provides hydraulic efficiency =>0.5? N/A Not Applicable - A WQCP is proposed not a wetland. Furthermore the Pond is not
required to meet site WQO's.
Velocities from inlet zone <0.05 m/s or scouring protection provided? Y Scour Protection has been sized in accordance with QUDM (2013) specifications
Public safety design considerations included in macrophyte zone (i.e. batter slopes Y Refer to Operational Works Drawing No. 16-001014-400 Series. Proposed fencing
less than 5(H):1(V)? surrounding all edges of WQCP, slight grades for safety is also proposed, 2m
benching around wetland is provided along macrophyte zone (with slopes larger than
1:8)
Maintenance access provided into areas of the macrophyte zone (especially open Y Access provided to WQCP
water zones)?
Safety audit of publicly accessible areas undertaken? Y Refer to Operational Works Drawing No. 16-001014-400 Series for safety features
surrounding WQCP.
Freeboard provided above extended detention depth to define embankments? Y 300mm freeboard provided to minimum top of embankment level as per specifications
provided in the latest issue of the SWMP Report No. 16-001014-01.
OUTLET STRUCTURES Y N Comment
Riser outlet provided in macrophyte zone? Y Refer to the latest issue of the SWMP Report No. 16-001014-01.
Notional detention time of 48-72 hours? Y Nominal Detention Time of 55 hrs determined in latest issue of the SWMP Report No.
16-001014-01.
Orifice configuration allows for a linear storage-discharge relationship for full range of Y Nominal Detention Time in the latest issue of the SWMP Report No. 16-001014-01.
the extended detention depth?
Maintenance drain provided? Y Pumping of deep water zones proposed.
Discharge pipe has sufficient capacity to convey maximum of either the maintenance Y Riser calculations confirm sufficiency of discharge pipe
drain flows or riser pipe flows with scour protection?
Protection against clogging of orifice provided on outlet structure? Y Refer to Operational Works Drawing No. 16-001014-400 Series for details.
OTHER COMMENTS
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