Provisional approvals are granted for a limited number of applications for a limited period of time. SeptiTech Recirculating Trickling Filter Biological treatment. The Provisional Approval is for leach field size reductions beyond that in SeptiTech s General approval. WasteTech STM 2000 unit Physical treatment. This applies to systems with General or Provisional approval.
All mechanical systems require on-going professional maintenance.
You may need a licensed treatment plant operator for this maintenance. Cromaglass Sequencing Batch Reactor Mechanical unit, approved under Env-Ws 1024. Constructed Wetlands Innovative, has been approved for a few sites. Significant engineering required. Spray Irrigation Has been approved for a few sites.