Aphria Inc. - Environmental Compliance Approval (sewage)

This proposal from Aphria Inc. is for an amendment to Environmental Compliance Approval number 4700-9NLHEU for the stormwater management works including alterations to existing stormwater management facilities including enlarging an existing S.W.M. infiltration pond to accommodate additional greenhouse facilities and a new separate S.W.M system for the west parking lot area for collection, transmission, treatment and disposal of stormwater run-off from the lands located at 265 Talbot Street West and 338 Mersea Road 3, in the Municipality of Leamington, County of Essex, Ontario.

The stormwater management works consists of the following:

• roof water drainage pipe systems, swales and on-site storm sewers discharging roof top runoff to the stormwater detention pond;
• one stormwater management detention/wet pond having an active storage volume of 17,266 cubic metres with a maximum active water depth of 1.45 metres for the 1:100 year storm event, discharging a maximum release rate of 44 litres per second into the E.F. Ives Drain;
• one outlet structure containing a 250 millimetres diametres outlet pipe and containment valve;
• one emergency overflow spillway and containment berm directing flows in excess of the 1:100 year storm to the E.F. Ives Drain;
• one oil grit separator (OGS) model 3612WQA serving the parking and truck maneuvering areas (0.65 hectares);
• on-site storm sewers, discharging surface runoff from the parking lot into the enclosed Sun Parlor Drain;
• one outlet structure (CBMH29) containing a concrete block weir to direct flows from the parking lot to the OGS unit;
• one OGS model 3620WQA serving the west parking lot (1.918 hectares); and
• one existing outlet structure (EXCBMH) containing an outlet pipe fitted with a 240 millimetres diametres by 600 millimetres long orifice, and containment valve