Rebuilding a septic drain field

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Based on your rather telling but incomplete information, I have to caution you on your plans. This may have changed, I haven't had septic in 20-years. Not good & not legal, if the field hasn't been unused for 20-years. This must be fully designed, tested, approved & inspected to be proper, legal & last 25 or more years.

If a newer field has to be re-used, all soil needs to be entirely removed & replaced with a proper draining & absorption mixture. A complete & total deep excavation. The fork must be a fork & not a single long pipe & no fork tine can be any longer than 100' & each must end with an inspection vent pipe. Each tine must be separated by dirt to avoid pooling & enforce even...

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Septic drain fields, also called leach fields or leach drains, are subsurface wastewater disposal facilities used to remove contaminants and impurities from the liquid that emerges after anaerobic digestion in a septic tank.

A septic tank, the septic drain field, and the associated piping compose a septic system. The septic drain field is effective for disposal of organic materials readily catabolized by a microbial ecosystem. The drain field typically consists of an arrangement of trenches containing perforated pipes and porous material (often gravel) covered by a layer of soil to prevent animals (and surface runoff) from reaching the wastewater distributed within those trenches.[1] Primary design considerations are hydraulic for the volume of wastewater requiring disposal and catabolic for the long-term biochemical oxygen demand of that wastewater.

Sewage farms are similarly used to dispose of wastewater through a series of ditches and lagoons (often with little or...

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A septic drain field is a vital part of any septic system. An improperly designed drain field will do nothing but cause huge problems with the entire system. When you design your drain field, there are a few things to keep in mind.

Step 1: Determine the Size

The size necessary for your drain field will depend on a few factors. The soil should be tested for a percolation rate first. You can run the percolation test on your own, or hire someone to do this. To do this on your own you will need to bore several holes in the field. You will need to bore holes at least 3 inches in diameter and 3 feet deep. This needs to be done in random areas across the proposed area for the drain field. Once you have soil, mark the general area on a map of the field, and have the soil inspected for percolation rates.

The size of the field will be based on the size of the home and the rate of percolation. A typical home with a good percolation rate may require as little as 4500...

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[Summary]Septic Systems Septic systems handles the waste from drain systems in buildings, normally by processing the waste through septic tanks and leaching areas. Solid waste and grease are retained in septic tanks and effluent waste water are disposed into

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Septic Systems

Septic systems handles the waste from drain systems in buildings, normally by processing the waste through septic tanks and leaching areas.

Solid waste and grease are retained in septic tanks and effluent waste water are disposed into the ground by leaching systems.

Septic Tanks

Scum and fat/grease are floated to the top of the tank. Solids are settled in the bottom.

Septic DrainField Size Determination Methods: how big should the drainfield be &map what leachfield or absorption bed capacity is needed?


Septic Drainfield Design: Septic Size Requirements Guide

SEPTIC DRAINFIELD SIZE - CONTENTS: How to...

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Minimum setback requirements established by The Texas Commission on Environmental Equality (TCEQ) usually prevent initial house construction from occurring over any point of a septic system. These setback requirements include distances from the septic tank and the drainfield from foundations, pools, property lines, water wells, etc.

Some homeowners, whether accidentally or deliberately, build items like patio decks or home extensions over their systems. This can lead to greater expenses when finding and servicing the system.

Building over septic tanks

It is never recommended to build a structure over any portion of your septic system. The most common problem we see is when someone wants to pump out their septic tank but doesn’t know where their tank is located.

It is not uncommon for us to find tanks located under a wooden deck, pool patio, driveways, or even room additions. Most of the time, this happens because the...

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our main drainfield is raised 4' and is directly off our rear porch. First there is a tank out about 16' from our house, the tank now has a birdbath on it with strawberries growing around it and an herb garden on one side, perennial flowers on the other.

going out from the tank is a drainfield about 60 x 60 '..as I said raised 4' above grade..we had fill brought from a pond dig so we could gradually slope the area from the drainfield gently down to the grade..

at the close end we have a lawn path going down the grade wide enough for a double mow on the riding mower..in a curve going to main grade..from the center north of our tank we have a 24' circle of lawn with an arbor on the far end of the circle with a lawn path going under the arbor and then another oval of lawn more wide than long..and opposite the arbor is a small deck with steps going down the north side of the drainfield to a full size apple tree and more lawn.

around the circle and oval lawn are...

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Diagnose the cause of soakbed or leachfield failure:

This article explains how to detect and diagnose a clogging failure of the septic drainfield or leachfield as one of the types of septic system failure in the drain field, leach field, seepage bed, or similar component. We list the causes of each type of septic component failure, and list the septic component failure criteria or in other words what conditions are defined as "failure"?

How can you distinguish between a blocked pipe, a septic tank that needs pumping, and a clogged drainfield that needs replacement? This is an important question as it distinguishes between relatively low cost maintenance or repair task and a costly septic leach field replacement.

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We're fighting a battle with the FL Dept. of Health. Our 50-year-old house was destroyed during Tropical Storm Fay, we demolished it to build a totally green home. Initially we were told we were grandfathered.
Their issues:
1. The site plan submitted indicates that the property does not contain enough suitable unobstructed land for installation and proper function of the system.
2. Systems and Septic stabilization facilities shall be placed no closer than seventy-five feet from a private potable well.
3. Systems shall not be located under a building or within 5ft of building foundations.
4. There shall be a minimum 5 ft. separation between the side wall of the absorption area and the elevated building.

Any help, guidance would be...

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Diagnosing a Septic Tank Drainfield Problem

The most common septic tank failures happen when septic bacteria and septic tank enzymes are killed off in normal septic tanks and aerobic septic tanks by harsh household cleaning chemicals or strong medications homeowners are taking for a serious illness. Another problem area is when septic tank pumps, septic filters, and septic tank aerators break down. All these situations allow septic tank sludge to escape from the septic tank and overload the septic tank drainfield with solids causing the bio-mat to become out of balance.

Slow or sluggish flushing of toilets or drains - septic pipe noises

Drainfield problems or septic tank...

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Contact your local conservation district and/or county planner or whoever permits septic systems. They can give you approximate information on your soils and why the perc test failed, which to me is the first issue in fixing your septic system. The current leach field has to be replaced, and there should have been a planned replacement area shown in the permit for your original septic system, although this may have grown over with trees since (these trees could also be plugging the existing leach field and contributing to your problem).

The perc test may have failed because the ground is too sandy/gravelly and the sewage water will drain to ground water too quickly, contaminating the ground water and nearby domestic wells. Or, it may have failed due to too much clay and the water won't soak into the soil, backing up the system (or even causing your current problem). A "standard" system can be modified relatively easily to deal with sandy/gravelly soil, clay is a bit harder...

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Permits

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All new installations of septic sewage systems must be inspected and receive a permit from a county health department within Georgia. The local sanitarian, from a county health department, must carry out an effective absorption rate test, where a percolation test is used. A rate of 20 minutes to 90 minutes per inch is classed as a good rate of absorption for a drain field.

Drain

A drain field uses the natural filtration of soil to remove harmful bacteria and pollutants from wastewater; Georgia calculates the amount of drainage needed by the number of bedrooms in a building. The peak water usage each day is classed as 150 gallons per bedroom, which a drainage field must be able to absorb without allowing sewage to enter groundwater supplies.

Installation

A septic sewage system must be installed, included hard pipes carrying wastewater to a drainage field by a contractor certified by the state. The location of a drain field is...

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A septic system is an essential but costly part of building a home. The upside is you won’t have monthly sewer fees or the initial cost of tapping into the municipal sewer, which averages more than $2,000 and can, in many cases, cost more than a sewer connection.

via Choice Home Warranty

This information in this guide is about septic system planning and installation. We include septic system cost for common septic and drain field systems. A leach field, the term used in many areas, is the same as a drain field.

Septic System Planning and Installation Overview

Here is an overview for this part of your land development and building process. Then, we’ll break down the steps with itemized costs and timeframes for each part of the process.

We’ll consider that you are starting from scratch with a vacant piece of land and want to build on it. The process varies slightly between communities, and your development or building department will have...

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Many buildings and homes have on-site wastewater management systems, commonly called septic systems. Because septic systems are buried, it is easy to forget about them as they quietly, elegantly and efficiently maintain human and environmental health. Septic systems are the norm in rural areas, but they can be quite common in urban areas as well. It is important to know if your building is on a septic system.

Is Your Home or Building on a Septic System?

The answer to this question may not be obvious. A building that appears to be on a sewer system may actually be on a septic system. It is not uncommon for renters to have little information about the fate of their home's wastewater. Some of the following clues or indicators will help determine if the building has a septic system or is served by a sewer system:

The city or municipality will charge for sewer service. Take a close look at the water bill and determine if there is a fee labeled "sewer" or "sewer...
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Which treatment system is best?

Some thoughts on treatment systems

Due to long and sometimes painful experience, we at Septic Expert have come to prefer certain treatment systems over others. Ultimately the treatment system acts as a filter for the drain field, sand mound, or other disposal system.

Soil is generally very good at disposing of clean water; rain can fall on a field for generations and it will percolate through the ground with no ill effects. The trouble with a septic system is that we are asking the soil to dispose of effluent, which is not in the least bit clean. Instead it is loaded with suspended solids and bacteria. This is the reason that Type One septic fields are so large. It is a given that the soil will eventually plug up and seal off. The solution in a type one system is to make the septic field large enough to put off the point of failure well into the future. The advent of large particle effluent filters has helped prolong the life...

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