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Well found by house, How do we fill it in?
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<blockquote data-quote="Bez?" data-source="post: 238071" data-attributes="member: 4151"><p>If indeed it is a well, you have access to the water table. This means you do not fill the well with gravel and you do not fill the well with trash - unless you intend to fill the water table with whatever goes down the hole.</p><p></p><p>If it is a cistern it can simply be filled in with whatever you so desire.</p><p></p><p>You need to know the actual diametre of the well, the true depth of the well and if there is a casing in the well.</p><p></p><p>There is an actual decommissioning method to close off a well and ensure the water table does not get damaged. Any time you spill something like oil, paint or whatever into what may appear to be an abandoned well, that contaminant has access to other wells through the water table. Remember flooding can cause well contamination as can firefighting - should you be unfortunate enough to have a fire. It is amazing what can get down a well - despite our best intentions. </p><p></p><p>Take out any piping and any electrical - these simply help liquids find a path through the seal into the water table. Pull out the old tin cover. Keep small kids away.</p><p></p><p>The proper method - if memory serves me correctly - is to fill the lower 2/3'rds of the well with clay. Let stand for a couple of days to allow some settling. </p><p></p><p>Usually bentonite clay is used and care must be taken to prevent bridging of the material. This material is poured into the well in a dry state and then wet down. The clay expands and seals off the water table.</p><p></p><p>If you plan to use regular clay, it should be dug from the ground at a depth that is below any organic matter - this prevents rotting material to either open a channel from the surface through the clay plug, or potentially contaminate the ground water source.</p><p></p><p>Fill the top 1/3'rd of the well with fine sand and then start adding water to the well site. This water will eventually work its way down through the sand and enter the clay zone - the clay will expand and seal the well. You may need to top up the sand every couple of years until the settling stops. </p><p></p><p>A REPEAT WARNING:</p><p></p><p>If a permeable fill is used there is a serious risk of contaminants flowing from the surface - through the fill material into the water table. Do not use gravel and do not use sand for the bottom sealing plug - clay should be used.</p><p></p><p>If all else fails, visit your local well driller - he will have a good idea of what to do. If he says "put gravel in the hole" - find better help asap.</p><p></p><p>Some areas will have actual legislation as to how to back fill a well. Do not violate this, because there is potential for you to be liable should an incident take place that can be traced back to your well location.</p><p></p><p>Best to all, </p><p></p><p>Bez?</p></blockquote><p></p>
[QUOTE="Bez?, post: 238071, member: 4151"] If indeed it is a well, you have access to the water table. This means you do not fill the well with gravel and you do not fill the well with trash - unless you intend to fill the water table with whatever goes down the hole. If it is a cistern it can simply be filled in with whatever you so desire. You need to know the actual diametre of the well, the true depth of the well and if there is a casing in the well. There is an actual decommissioning method to close off a well and ensure the water table does not get damaged. Any time you spill something like oil, paint or whatever into what may appear to be an abandoned well, that contaminant has access to other wells through the water table. Remember flooding can cause well contamination as can firefighting - should you be unfortunate enough to have a fire. It is amazing what can get down a well - despite our best intentions. Take out any piping and any electrical - these simply help liquids find a path through the seal into the water table. Pull out the old tin cover. Keep small kids away. The proper method - if memory serves me correctly - is to fill the lower 2/3'rds of the well with clay. Let stand for a couple of days to allow some settling. Usually bentonite clay is used and care must be taken to prevent bridging of the material. This material is poured into the well in a dry state and then wet down. The clay expands and seals off the water table. If you plan to use regular clay, it should be dug from the ground at a depth that is below any organic matter - this prevents rotting material to either open a channel from the surface through the clay plug, or potentially contaminate the ground water source. Fill the top 1/3'rd of the well with fine sand and then start adding water to the well site. This water will eventually work its way down through the sand and enter the clay zone - the clay will expand and seal the well. You may need to top up the sand every couple of years until the settling stops. A REPEAT WARNING: If a permeable fill is used there is a serious risk of contaminants flowing from the surface - through the fill material into the water table. Do not use gravel and do not use sand for the bottom sealing plug - clay should be used. If all else fails, visit your local well driller - he will have a good idea of what to do. If he says "put gravel in the hole" - find better help asap. Some areas will have actual legislation as to how to back fill a well. Do not violate this, because there is potential for you to be liable should an incident take place that can be traced back to your well location. Best to all, Bez? [/QUOTE]
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Well found by house, How do we fill it in?
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