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Advanced Enviro-Septic Presby Environmental, Inc.

Description of Technology

Descriptions for proprietary technologies are from the Massachusetts DEP Approval Letters for the technology.

The Advanced Enviro-Septic System (the ‘System’ or ‘AES’) is an alternative subsurface Soil Absorption System (SAS) that replaces a conventional SAS designed in accordance with 310 CMR 15.000. The System consists of an 11 5/8-inch diameter corrugated, high-density plastic pipe with a 9.5-inch interior diameter and a standard length per unit of 10 feet. The pipe is perforated with eight holes equally distributed around its inner circumference at each corrugation. Each hole has a plastic skimmer extending inwards. The exterior of the pipe has ridges on the peak of each corrugation and is wrapped with three geotextile fabric materials. The inner layer is a Bio-Accelerator fabric against the bottom exterior of the plastic pipe, aligned between the 4 o’clock and 7 o’clock positions. The Bio-Accelerator fabric is covered by a thick coarse, randomly oriented polypropylene fiber mat which is wrapped completely around the pipe. An additional outer layer of a thinner non-woven geotextile polypropylene fabric is also wrapped around the pipe. Connectors designed to connect pipe units together are available and required. The System also incorporates a sand layer surrounding the pipe units, specified as concrete sand meeting the ASTM C-33 specification, also called System Sand. The System Sand must be placed with a minimum thickness of 12 inches below, six inches above and six inches to the sides of the AES pipe units.

The System includes a Sampling Device having a sloped plastic trough collector and a sampling port, installed below the System Sand allowing for observation and field testing/sampling of treated wastewater. A separate Inspection Port is also installed within the disposal field as required by Title 5, 15.240(13) extending to in-situ soils below the Sampling Device elevation.

The System has demonstrated the ability to meet secondary treatment standards as specified and required in the Standard Conditions for Secondary Treatment Units, Section II, Condition 1.

Massachusetts Technology Approvals

Approval Type General Remedial Provisional Pilot
Secondary Treatment
Nitrogen Removal Credit
Phosphorus Removal Credit

Please check the Title 5 Innovative/Alternative Technology Approval Letters webpage at Massachusetts DEP for the most up-to-date information.


Presby Environmental, Inc.
143 Airport Road
Whitefield, New Hampshire 03598 United States
P: 800-473-5298

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