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SEPTIC SYSTEMS HOME HOME BUYERSGUIDE SEPTIC SYSTEMS ONLINE BOOK INTRODUCTION SAFETY WARNINGS SEPTIC SYSTEM DESIGN BASICS PERC TESTS SEPTIC TANK SIZE SEPTIC TANK DEPTH SEPTIC TANK TEES FIELD SIZE FIELD SHAPE SEPTIC CLEARANCES SEPTIC TANK PUMPING FREQUENCY SEPTIC TANK PUMPING PROCEDURE SEPTIC PUMPING REPAIR SEPTIC TREATMENTS ALTERNATIVE SEPTIC DESIGNS AEROBIC SYSTEMS CESSPOOLS DRYWELLS EVAPORATION-TRANSPIRATION MEDIA FILTER SYSTEMS SEPTIC & GREYWATER FILTERS MOUND SYSTEMS RAISED BED SYSTEMS SAND BED SYSTEMS SEWAGE TREATMENT SYSTEMS WATERLESS LOW WATER TOILETS ALTERNATIVE SEPTIC DESIGNERS ALTERNATIVE SEPTIC PRODUCTS SEPTIC INSPECTIONS FAILURE CAUSES INSPECTING TANKS DRAINFIELD FAILURES INSPECTING D-BOX SEPTIC FIELD INSPECTION SEPTIC DYE TESTS FAILURE SPOTS SEPTIC INSPECTION WORK SHEETS DEFINITIONS FAILURE LAWSUIT FLOOD RESPONSE SEPTIC REFERENCES SEPTIC CONSULTANTS SEPTIC AUTHORITIES BOOKS REFS CODES More Information InspectAPedia TM Home & Site Map Air Conditioning InspectAPedia Bookstore Electrical Environment Exteriors Heating Home Inspection Insulate Ventilate Interiors Mold Inspect/Test Roofing Plumbing Water Septic Structure Accuracy & Bias Pledge Contact Us |
This document discusses the selection, design, installation, inspection, repair, and maintenance of Evaporation-Transpiration & Evapo-Transpiration Absorption as Alternative Septic Systems, also called Evapotranspiration Septic Systems. These systems may be selected for wastewater treatment and disposal at difficult sites. We also provide lists of product sources or specialists in this field. (Listings can be added here at no fee.) Citation of this article by reference to this website and brief quotation for the sole purpose of review are permitted. Use of this information at other websites, in books or pamphlets for sale is reserved to the author. Technical review by industry experts has been performed and is ongoing - reviewers welcomed and are listed at "References." © Copyright 2008 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use the links at page left to navigate this document or to go to Other Website Topics. Green links at left show where you are in our document & website. Evaporation-Transpiration (ET) Septic Systems, and Evapo-Transpiration Absorption Septic Systems (ETA) dispose of septic effluent from the septic tank by providing a surface area intended to allow the effluent to evaporate. ET systems depend entirely on evaporation while ETA systems make use of both evaporation and (limited) soil absorption of septic effluent. The following is from: New York Appendix 75-A.9 Alternative Septic System Designs [Regulation and System Design Criteria for Raised Septic Systems, Septic Mound Systems, Intermittent Sand Filter Bed Systems, Evaporation-Transpiration Septic Systems, Evaporation-Transpiration Absorption Septic Systems, and Other Alternative Septic Systems] (e) Evaporation-Transpiration (ET) and Evapo-Transpiration Absorption (ETA) Septic Systems Design Criteria(1) Evaporation/Transpiration/Absorption Septic Systems - GeneralET systems rely on the upward movement of moisture through the soil, surface vegetation and into the air rather than absorption into the soil. ETA systems also use the absorptive capabilities of the soil and are less dependent on evaporation and transpiration. (2) Site Requirements for Evaporation, Transpiration-Absorption Type Septic Systems(i) All systems previously discussed, except intermittent sand filters, have been determined to be unacceptable for the planned building site. (ii) An expansion area equal to or greater than 50% of the required basal area shall be available on the site. (iii) All minimum vertical and horizontal separation distances can be maintained as described in Table 2 from both the edges of the basal area and the designated expansion area. (iv) An environmental assessment determines that the development of the site with this system is consistent with the overall development of the area and will cause no adverse environmental impacts. (3) Design Criteria for Evaporation, Transpiration-Absorption Type Septic Systems(i) The designer must consider all of the items listed below and be able to document from reliable sources (i.e., National Weather Service, Soil Conservation Service) the parameters used and show that the net outflow from the system exceeds the inflow without the exposure of sewage or partially treated sewage on the surface of the ground: Total rainfall and snowfall. The percentage of the rainfall and snowfall that will infiltrate into the soil and the percentage that can be expected to runoff the system. The annual land evaporation rate of the area. The vertical rise of water than can be expected in the soil due to capillary action. The amount of transpiration expected from the surface vegetation. The permeability of the underlying soil and the impact the system will have on the groundwater level. (ii) The design must provide for a trench depth that is not greater than 30 inches below the surface. (iii) Pressure distribution of effluent throughout the system is required. Volume: A-1a More expert information on this topic | |
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SEPTIC SYSTEMS HOME HOME BUYERSGUIDE SEPTIC SYSTEMS ONLINE BOOK INTRODUCTION SAFETY WARNINGS SEPTIC SYSTEM DESIGN BASICS PERC TESTS SEPTIC TANK SIZE SEPTIC TANK DEPTH SEPTIC TANK TEES FIELD SIZE FIELD SHAPE SEPTIC CLEARANCES SEPTIC TANK PUMPING FREQUENCY SEPTIC TANK PUMPING PROCEDURE SEPTIC PUMPING REPAIR SEPTIC TREATMENTS ALTERNATIVE SEPTIC DESIGNS AEROBIC SYSTEMS CESSPOOLS DRYWELLS EVAPORATION-TRANSPIRATION GRAVELLESS SYSTEMS LAGOON SYSTEMS PRESSURE DOSING SYSTEMS MEDIA FILTER SYSTEMS SEPTIC & GREYWATER FILTERS MOUND SYSTEMS RAISED BED SYSTEMS SAND BED SYSTEMS SEWAGE TREATMENT SYSTEMS WATERLESS LOW WATER TOILETS ALTERNATIVE SEPTIC DESIGNERS ALTERNATIVE SEPTIC PRODUCTS SEPTIC INSPECTIONS FAILURE CAUSES INSPECTING TANKS DRAINFIELD FAILURES INSPECTING D-BOX SEPTIC FIELD INSPECTION SEPTIC DYE TESTS FAILURE SPOTS SEPTIC INSPECTION WORK SHEETS DEFINITIONS FAILURE LAWSUIT FLOOD RESPONSE SEPTIC REFERENCES SEPTIC CONSULTANTS SEPTIC AUTHORITIES BOOKS REFS CODES More Information InspectAPedia TM Home & Site Map Air Conditioning InspectAPedia Bookstore Electrical Environment Exteriors Heating Home Inspection Insulate Ventilate Interiors Mold Inspect/Test Roofing Plumbing Water Septic Structure Accuracy & Bias Pledge Contact Us |
More Information on Septic System Diagnosis, Maintenance, & Repair
Pennsylvania State Fact Sheets relating to domestic wastewater treatment systems include
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10/02/07 - 1/1/1995 www.inspect-ny.com/septic/altevaptrans.htm © Copyright 2008-1995 Daniel Friedman - all rights reserved
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