Coco Filter / At-Grade - Andrew Damiani Septic & Site
A great alternative to the elevated sand mound is a system called a Coco Filter with an At-Grade drain field. These septic systems are very similar to the elevated sand mound with regard to pre permit testing, sizing, and pre treatment.
The at-grade system is an on-site sewage disposal system that utilizes a raised bed of gravel or stone over the natural soil surface with a pressure distribution system constructed to equally distribute the pretreated effluent along the length of the gravel bed.
What is an At-Grade Bed? • The main difference between an At-grade sewage system and other on-lot systems is that the At-grade component is constructed directly on top of chisel plowed soil at the original ground surface, instead of placing it on a …
Conventional septic systems typically rely on gravity flow, and include trenches filled with gravel or sand. More advanced types of septic systems include at-grade mounds or sand mounds and other pressurized dispersal systems.
Lot Sewage Disposal Systems known as the At-Grade and Shallow At-Grade Systems. Pennsylvania has approved the use of these at-grade systems as an alternate wastewater disposal method for on-lot sewage. The at-grade system was developed and is designed for sites with restrictive soil conditions, es-pecially limiting zones at less than 48 inches ...
This Private Onsite Wastewater Treatment System (POWTS) component manual provides design, construction, inspection, operation, and maintenance specifications for an at-grade component. Violations of this manual constitute a violation of chs.
An at-grade, as its name implies, is a system installed with the distribution media placed at the original soil surface. It is designed to solve similar issues as the mound, but where the soil conditions are somewhat more favorable.
How It Works | Van Goethem Septic Systems, Inc.
An at-grade septic system is an above-ground soil absorption system that requires a minimum suitable soil depth of 36 inches. The wastewater (effluent) leaving the septic tank is pumped from a pump chamber to this type of soil absorption system.
An at-grade system consists of a septic tank, pump chamber, pressure distribution system and a soil absorption bed. In the septic tank, solids settle out of the waste stream and anaerobic bacteria facilitate the partial breakdown of organic matter (primary treatment). Clarified effluent
The types of conventional septic systems include: drywells (seepage pits), deep or shallow trenches, conventional sandmounds, and at-grade mounds. There are also several types of non-conventional septic systems that may be approvable for …