[Owtsinfo] Attention OWTS Professionals: A/E Technology List Updated 7-23-20

[Onsite Wastewater Treatment System]

The list of approved Advanced and Experimental OWTS Technologies was updated on July 23, 2020. The revised list was posted yesterday.

Key Changes:


  1.  The certification for BioBarrier was renewed on July 23, 2020. The new approval explicitly limits all future design approvals to a maximum design flow of 1500GPD. This design flow cap applies to all OWTS applications including variances and repairs. The revised certification, nitrogen monitoring protocol requirements, and updated BioBarrier manuals are now available online.



  1.  The list of approved pretreatment technologies has also been updated to clearly list next to each approved technology: the treatment capabilities, Pretreatment Category (Category 1 - Timed Dosed or Category 2-Socially Dosed) as applicable, and what type of license is required to submit a design utilizing a given technology. These changes were made to eliminate confusion for the professional design community.



  1.  DEM is continuing to renew expired A/E Tech applications and the goal is to reach a point where all approvals are up to date and all manuals are posted online. Please visit this list regularly to check for updates and project applicability.


Please visit the following website to view the updates: http://www.dem.ri.gov/programs/benviron/water/permits/isds/pdfs/ialist.pdf


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Rhode Island Department of Environmental Management
Office of Water Resources - Onsite Wastewater Treatment Systems (OWTS) Program
235 Promenade Street, Providence RI 02908
Website Address: www.dem.ri.gov/septic<http://www.dem.ri.gov/septic>;
OWTS Phone Line: 401.222.3961;
OWTS General Information Email Address: DEM.OWTS at dem.ri.gov<mailto:DEM.OWTS at dem.ri.gov>

[cid:image003.jpg at 01D66BCB.55785190]<http://www.dem.ri.gov/septicsmart>



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