Since the modular Bio-Filter™ is constructed of durable and lightweight Polymer Coated Steel (PCS), it can be installed without the use of heavy lifting equipment.
Four routine underground installation steps for the AquaShield™ Bio-Filter™ are recommended below. Site-specific conditions may necessitate deviation from these recommendations.
1. Excavation and Bedding. The excavation bottom shall comply with ASTM D 2321, Section 6, Trench Excavation, and Section 7, Installation. The unit is installed on a stable base consisting of Class 1 stone materials per ASTM D 2321, Section 5, Materials; and, compacted to 95% proctor density.
2. Outlet Pipe Connection Device. A manufactured stub-out for the outlet pipe is included to allow for simple attachment of the device to the stormwater conveyance pipe with a rubber coupling. This only requires the contractor to supply a rubber coupling to attach the conveyance pipe to the outlet stub-out for the system to function properly.
3. Backfill Requirements. Backfill consists of Class 1 (preferred) or Class 2 stone material per ASTM D 2321, Section 5, Materials; and, compacted to 90% proctor density. Standard practices should be implemented to bring backfill material up to near surface grade to ensure structural integrity of the device.
4. Activation. The unit is typically shipped without biomedia pre-installed. Inlet and grate temporary cover to the biofiltration chamber should remain intact until the selected vegetation is to be planted. Also, no water should be allowed to flow through the device with the biomedia inplace until the unit is fully activated. It is the responsibility of the contractor to obtain the selected vegetation and appropriately plant it within the biomedia. AquaShield™ is not responsible for specifying, supplying, planting or maintaining vegetation. Once the outlet pipe connection is made and the vegetation planted, the unit is ready to receive water and can be activated. It is not necessary for AquaShield™ personnel to be on-site to activate a facility.