Approved Plans and Documents - OPW22/0303

FORM C — BIORETENTION MEDIA (CONT.)

INSTALLATION OF BIORETENTION MEDIA

ACTION (IF

CHECKED SATISFACTORY UNSATISFACTORY)

| |

INITIAL

Base of system free from debris
Drainage layer (fine gravel) installed to
correct depth (+25 mm)

Transition layer (coarse sand) installed to
correct depth (+25 mm)

Placement of filter media completed to
avoid compaction of media and using at
least two lifts

Filter media installed to correct depth

 

Light, even compaction applied to
remove air gaps (e.g. light roller or single

 

pass with a ‘pozitrack’ bobcat)

Spreader bar used to flatten surface of |
filter media |

 

 

Sediment fences in place ,

 

 

INSPECTION: Superintendent and bioretention designer inspection and sign-off to occur while installation of media is
occurring. Photos must be taken by the superintendent, the bioretention designer or the contractor.

Comments (attach and refer to additional pages if necessary)

NB: Laboratory test results, certification, delivery dockets and photos attached

Signed by superintendent: Signed by bioretention designer:
Print name: Print name:
Date: Date:

Document Set ID 22315062 =,
Version: 1, Version Date: 20/02/2023