SBSMR 20004 Revision D - Response to RFI

TABLE D.? BIORETENTION AND BIORETENTION SWALE NODES ASSESSMENT CHECKLIST (REFER TO SECTION 4.5)

BIORETENTION AND BIORETENTION SWALE
FILTER COMPONENTS (CHECK REPORTING COMMENTS/ISSUES TO FOLLOW UP.

TABLE C8 AND TABLE C9)

 

Has the filter surface area been calculated appropriately?

 

Is the extended detention depth consistent with the depth
shown on the development plans and between 0-0.4 m2

 

Is the filter media area consistent with the area shown on
the development plans?

 

Has an appropriate unlined filter media perimeter been
set?

 

Has an appropricte saturated hydraulic conductivity
been set? This should be modelled once at 50 mm/hr,
once at 200 mm/hr and both scenarios reported.

 

Is the fitter media depth modelled equivalent to the
depth of media shown on the plans? This depth should
not include the intermediate layer, drainage layers, or
submerged zone.

 

Is the TN content in the filter media set to either 400 mg/
kg or another suitably justified value?

 

Is the orthophosphate content in the filter medio set to 30
mg/kg or another suitably justified value?

 

Is the base lined?

 

Has the system been modelled to reflect the nutrient
removal properties of the plants to be used on site?

 

Is the overflow weir width appropriate?

 

a ee

Is the exfiliration rate set to zero?

 

If an exfiltration rate has been used, has Ihe secondary
drainage link been used to return the exfiltrated flows to
the model? (Section 4.1}

 

\f exfilfration rate has been used, is the exfiltration rate

 

 

 

justified?

Has the system been modelled with underdrains present? 5 ff .
ls a submerged zone with carbon present? J
|s the depth of submerged zone consistent with olans? Jf

 

If bioretention systems are modelled in series, is there a
low-flow bypass modelled in the downstream bioretention
system/s? (Note: separate drainage systems are required
if a low-flow bypass is modelled)

 

Have K and C* been retained as default values? (Y/N) JS

BIORETENTION SWALE COMPONENT ONLY {CHECK TABLE C8)

 

Has an extended detention depth cf Om been used? (Y/N}

 

Has the low flow bypass been calculated? The calculation of
should be provided by the applicant separately.

 

 

 

 

 

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