18
Step 6 continued: Install inlet and outlet pipes using primer and cement. For larger systems with 5”
inlet and outlets, you may use 5”: 4” eccentric reducer adapters included with system. Install with
thin edge down. Apply primer and cement to 4” PVC pipe sections to inlet and outlet.
Step 6: Backfill about 3/4 way up tank in layered, compacted 6” lifts using sand, stone dust, pea stone
or equivalent material that form-fits into tank corrugations. Keep backfill material damp to assure
compact backfill.
Water
