soakaway distance from house. Soakaway and Septic tanks with very long distance kilometers to the discharge points can also affects how much it will cost to clean and evacuate the Septic Tank contents. soakaway distance from house

 
Soakaway and Septic tanks with very long distance kilometers to the discharge points can also affects how much it will cost to clean and evacuate the Septic Tank contentssoakaway distance from house  It includes design guidance for soakaway pits, trench soakaways and general advice for

Which while dealing with the roof water, leaves me with no surface drain for. The pipes are laid no deeper than 700mm – 800mm in the ground. Vol = A × (rainfall rate/3000) This formula states that the volume of soakaway required is equal to the area to be drained (in m²) multiplied by the product of the storm rainfall rate (assumed to be 50mm/hr in UK) divided by 3000. Condensate Soakaway Code: SOAK1GR 500mm minimum 300mm Hole width 200mm CODE: SOAK1GR Hole and SOAK1GR filled with 10mm Limestone Chippings Holes in SOAK1GR to face away from wall Hole depth 400mm Ground Level Maximum Possible Gradient Side Connection Top Connection 2 300mm 1 3 Ø110mm Ø100mm 5 4. 2 Drainage and waste disposal Approved Document H PAGE Design and construction 32 Constructed wetlands/reed beds 33 Marking 35 Packaged treatment works 35 Siting 35How deep should a garden soakaway be? How deep should a soakaway be? The Perforated pipe should be laid at a minimum depth of 200mm and a maximum depth of 700mm. A Sewage Treatment Plant can discharge directly to a drainage ditch, watercourse or river. in you case you could run a pipe across the. A retaining wall in your back yard is unlikely to have any waterproofing. 5 metres (that is halfway between the house and the 'lack of pipe'). Country. Next day, refill the test section with water to a depth at least 300mm (12in). Little monitoring of soakaway performance is done, but this could be most informative about changes in soil infiltration rate and in warning of soakaway blockage in the long term. 5m from any boundaries. This is set away from the septic tank and wastewater is released into it and diffused through the rocks, slowly escaping into the ground. Most homes in the UK send water from a gutter drain to a sewer system operated by a water company. Also, carry out routine maintenance to ensure debris doesn’t clog up the drainage system. 040 = 0. Always cover the soakaway crates with a geotextile membrane to maintain the performance of the system. required even a normal soakaway located 5m from a building. The Soakaway Design Guide (July 2000) D4 f18. V soak = 15 × 300/1000. After, we discharged the Septic Tank. The drain must deepen a good deal from there as it runs under an upwardly sloping drive for about 20 yds. Small bore solid-free sewer: An in-house toilet discharging to a septic tank (or on-site digester) with liquids disposal via Excavate a hole 300mm square to the proposed depth of the pit and trench. For an easy-to-access garden, you can expect a small soakaway to cost around £1,000. Published in Soakaway Design – Groundwater Level. 19 July 2009 at 4:39PM. Soakaway Distance From Rivers, Streams And Ditches Visit for more information Soakaway Distance From Rivers, Streams And Ditches #septictank #septictanktv. It was invented back in the 1800s by Henry Flagg French The president of Massachusetts (agricultural college). Fill the hole with water and allow it to seep away overnight. Step 2 – Prepare the crates. Soakaway crates help to control the level of surface water, particularly in areas that are prone to flooding. In other places, where they still do not have this resource at their disposal, it is used as a sewage treatment system for the black well, also known as the blind well. 00 user 10, 290mm c/c for diameter. Common guidelines require at least 50' clearance distance between a well and a septic system tank or 150' between a well and a septic drainfield or leaching bed but you will. Can you put soakaway above ground? Above-ground mound soakaway systems, or mound systems, were developed by WTE Ltd. On 2018. Failed pavements are expensive to repair. Hi. 5m 13. if, for the soakaway location, r on Figure 1 = 0. Table 1: Distance Measured from Relative Soakaway to Borehole in the study area Soakaway Positions Distance (m) Calculated Area (m2) Latitude (N) Longitude (E) One-man village 9° 0' 10"N 7° 37' 3"E Soakaway one. It should be located at a safe distance from a drinking water source (ideally more than 30 m). This tank is usually installed below 1. But there is a third system of drainage of the. 4m deep (hit rock) As you can see from the pictures, it looks like clay and certainly acts like clay. Country. 2. Soakaway Crates: Aquacrate 20 tonne soakaway crate - 1m x 1m x 0. 5 metres from the boundary. Be sure to consider any regulations around minimum clearance heights and obstructions. Calculate your soakaway size. A inspection chamber must be installed between the septic tank and the soakaway. Country. A stratum of sand and fine gravel is spread across the lowermost layer to aid in the dispersion of water. I am wondering are there separation distances required between a proposed soakaway and nearby well/percolation areas etc? Surely a soakaway is just filled with rainwater which cannot interfere with these items. After about two metres distance from the bungalow the pipe descended a lot more rapidly, and, so I now had to dig a constant path to follow it. generally on a house extension, the gullies are joined by 110mm pipe below the ground and then 1 pipe goes to a soakaway. If the discharge is to a soak away a sampling point must be provided before the soak away. A dry well or drywell is an underground structure that disposes of unwanted water, most commonly surface runoff and stormwater, in some cases greywater or water used in a groundwater heat pump. For example, if your soakaway is to be placed at the bottom of the garden and your garden is 30m long, the pipe will be 300mm deeper when it gets to the soakaway. So the entire area is just under. Using this formula we can quickly calculate the size of the soakaway that needs to be installed. existing ground / formation level. The Nicholls team can also work. Soakaway Crates: Polystorm 61 tonne Polypipe Soakaway Crate - 1m x 0. All soakaways must be sited at least 5m from any building or road and preferably at least 2. Estimate of Soak Pit. A wastewater treatment system is an effective, economical way of treating wastewater from buildings. However, this is not mentioned in the 2010 Building regulations guide. Hello House, We digged septic tank and Soakaway for 6 flats. If you have or are planning to start a discharge to surface water in or near a protected. January 13, 2021 Drainage. 3. . Most gullies used in the UK are manufactured with a bend. It collects the waste foul water from a property. Regression analysis for the bacteriological quality of borehole water in relation to soak away distance: Summary output REGRESSION STATISTICS Multiple R 0. SurfaceRecords of the soak away distance from relative bore holes were measured in the field with a measuring line tape of 50meters and the corresponding distances of all the septic system was recorded. Note – Check manufacturer’s instructions to see if an air break is required. The soakaway must be a minimum of 10 metres from a watercourse, 15 metres from a building and 50 metres from a borehole or spring. 5m from any boundary. Ask at the builders merchants, and explain what you want it for. The size of your soakaway for your driveway will depend on the rainfall in your area, your soil's water retention as well as the size of your driveway. . Check out Labc soakaways. My 100 year old terraced house has a soakaway at the front for rain water only as there are no drains at the front. 5 1. So all rain water from one half of the house plus the extension does not go into the sewer system. A drain field is made of solid perforated pipes (NOT 'Flexicoil' land drainage pipe!), a minimum of 2 metres apart and a maximum of 700mm. I did wonder about the soakaway issue which is why I want to trace the drain run. 1 for toilet which enters a manhole within 2 metres of building and then onto two other manholes and eventually a soakaway tank arrangement . Pre-settled effluent from a water-based collection and storage/treatment or a (semi-) centralised treatment technology is discharged to the underground chamber from which it infiltrates into the. The downpipes for the house are then run into the soakaway, and the top. Contrary to what you believe, digging a big hole next to your house will cause it to fill up with water and the area will be permanently wet. orSt. you have not changed the volume of the discharge or, if you have, it’s not more than 2 cubic metres (2,000 litres) to ground. Answered 18th Oct 2020. 5 metres. To calculate the size of the soakaway, use this formula: Area = P x V x. You may require a larger soakaway for a house. You must have 7 metres of distance between your home and your septic tank. 00 ISBN 978-1-4064-2338-9Many houses have the roof downpipes connected to soakaways. A soakaway is simply a pit full of hardcore which allows the water to collect and slowly soak away through the soil. 5m of a boundary or in an area of unstable land in ground where the water table reaches the bottom of the soakaway at any time of the year. The current average cost of evacuating soakaway sewage in Nigeria starts from N70,000. To continue our three bed house example, the final calculation would be: 750L + 2,000L = 2,750L. The proposed soakaway borehole must meet the drainage standards for soil infiltration and storage emptying. This is to prevent any negative effects from the infiltrating water on the house foundations. What is the maximum distance a leach field can be from tank discharge. We were told that Texas requirements are. Home | BC HousingSt. The ground is not contaminated. The rule of thumb is 1 cubic metre of soakaway for 30 sqm of roof. 2019/11/10 Kristina Daddio . The inspection access should provide a clear view to the base of the soakaway, even when the soakaway is of the filled type (fig 3). The Sewage Treatment Plant must be sited more than 7m from habitable property. 9. In clay soils. Mary Long-Dhonau explains: “ [The size of. Soakaways can be blocked by rainwater, which can quickly turn into an expensive issue. 2. i man hole cover or concrete 200mm reinforcement concrete slab minimum distance from septic soak way building property boundaries wells cuts or embarkments water pipes large trees 1. This. 5m deep in a lower part of your garden and preferably at the bottom of a slope. 5 meters down, as a general rule of thumb for a driveway with a width of around 100 meters. . This calculation produces Vp in secs/mm [conversion = (1/Vp) /1000]. (d) A soakaway pit or trench should be located sufficiently far away from building foundations, watercourses and wells, in order to safeguard public health and maintain the structural integrity of nearby buildings. 6. 00 3. When it is full it has to be emptied and the waste water taken away by tanker to a disposal point. A soakaway is a buried drainage feature which seeks to manage surface water on the site and infiltrate into the ground, rather than discharging to an offsite location such as a watercourse or sewer. You could potentially do away with gutters and have dispersal straight from the roof edge. The area you require is determined by the rate of percolation multiplied by the number or people in the household (the maximum occupancy, not the number of people in your family ) multiplied by 0. A Soakage Pit is a covered, porous-walled chamber that allows water to slowly soak into the ground. Note – Check manufacturer’s instructions to see if an air break is required. However the soakaway is now struggling to cope with the use from our house, especially now we seem to get biblical style weather more frequently… I need to. O. Distance from Septic Tank to house. Difficult, unusual or larger project with complex pipework, difficult access, deep excavation through hardened materials (concrete, garden walls etc), disposal of waste material and reinforced materials. found a inspection cover 6 inches under the soil, right in the middle of the base. Step 3 – Prepare the base. 3 flats with one septic tank, the other flat with one Septic Tank. We can also deal with your insurance company directly on your behalf at no extra cost to you. We are happy to help, call us on 0800 3101092 or via our contact form. Allow to seep away overnight. A soakaway is an efficient and low-environmental impact way of dealing with either foul or excess surface water in your drainage system. 4. It should be ideally 32mm (1 1/4″), lagged and have a good (fall) run down to the drain. Does this mean I can site my soakaway much closer to the boundary (2-3 m) than Building Regs require. If you need to do a percolation test then: 1. The fitter assured us that it was all done correctly and that it has been fitted into a soakaway. How big should I make the soak away. The trenches for the soakaway should be between 300mm and 900mm wide with a distance of 2m between trenches. Buying a house in the country with a well and septic system on an acre of land. 1. :cool:The washroom in the annexe will be above the garage bay (room in roof). The great house search continues, we've found one we like which is a bit in the middle of nowhere. For small soakaways serving 25m² or less, a design rainfall of 10mm in 5 minutes is quoted in the Building Regulation Approved Document H as being an appropriate worst case. Soak Pit Design. It’s also recommended that your septic tank be located within 30 metres of an access point to allow for your tank to be easily emptied when required. #2. Having had a look at the…According to new regulations passed in 2015, if your septic tank discharges to surface water such as a ditch, stream, canal or river, you will have to upgrade your system to a sewage treatment plant or install a soakaway system by 1 January 2020. Flush your toilets, do your laundry, all with rainwater which will never present you with limescale problems and you use far less detergent as it is so soft. Therefore, sitting borehole close to any pollution source (soakaway) is very detrimental to the quality of the ground water resources TABLE V. It includes design guidance for soakaway pits, trench soakaways and general advice for. These can absorb 5 litres per m2 per day. Hi all, I was recently looking into purchasing a small building plot , problem is it has a neighbours soakaway right on the rear boundary and is virtually impossible to get the 7m distance and still build anything worthwhile, it' s a real shame as is a very nice plot. 100x1. A Soakaway is a pit or trench where surface water is allowed to collect and slowly soak into the surrounding soil or rock. This research has confirmed the minimum allowable distance between a soakaway system and ground water source (Borehole), From the results obtained in chapter 4 of this work, the minimum allowable distance between soakaway pit and borehole (in Ugep area of Cross River State) is 30 metres (30m), which is in conformity with NAFDAC's (National. Hi, a soak away should be a minimum of 5 metres away from your property and if your drive is sloping towards the house you need a minimum of a ACO drain against the house but depending on the length and steepness of your drive you may need two. In contrast, the discharge from modern small sewage treatment plants has been processed in more stages, so shouldn’t need a soakaway. Minimum soak away site distances. Tidy up the soak away and trenches by removing any loose soil that has fallen in. It also incorporates previous amendments. Quantity of Soak Pit; Soak Pit Design: An open pit is dug in the ground and lined with porous material or left unlined and filled with gravel and coarse rocks. Unfortunately, in my case that's quite far from the back of the house so it would involve extensive pipework, including under my driveway, and be very expensive. 8m from ground level. This has to be assumed for initial calculation purposes. Groups. Depending on the type you have, the pipe which runs to your soakaway will either come directly from your property (usually a gutter), from an area where there is an overflow of surface water (via a system such as a French drain), or from a private system such. All soakaways must be sited at least 5m from any building or road and preferably at least 2. f - is the soil infiltration rate, in m/s, determined in accordance with clause 3. Step 2. You should recieve some clips or ties with the crates. The size of your soakaway for your driveway will depend on the rainfall in your area, your soil's water retention as well as the size of your driveway. Must lay a layer of sand and gravel at the bottom to disperse the effluent flow. 5 3. 5 May 2020. Where C is the capacity or volume of the soakaway in m 3 A is the area of roof of the building in m 2 R is the rainfall expressed in m/h (metres / hour) For the rainfall a standard 50mm per hour is usually used which equates to 0. The main factors involved in pricing the emptying of. Design soakaway. (MORE: Get to Know Your Options for Off-Mains Drainage) Klargester reed bed system from. It must be at least 10 metres away from any watercourse. Buying a house in the country with a well and septic system on an acre of land. 3,385. 5m2. On my Victorian house - so a bit older - no soakaways. 78m3; Using 1. Steps to apply for building control compliance: Step 1: Check if you need it. As an aid, mark a stick 300mm from one end, place in the hole and fill up to the mark. This enables aerobic contact between the effluent and the drainage stone and soil particles. roughly 2m x 1m, x 1. You must have 7 metres of distance between your home and your septic tank. Step 2 – Prepare the crates. It's 18,000 for 2 users + (6,800 x 3) 20,400 for 3 additional users equalling 38,400 total capacity. Septic Soakaway Installation, Leach Field or Drainage Field Installation UK. If you have replaced your treatment system but all these points. Dear All, I am trying to resolve an issue with an existing soakway in the front garden at my residential property in the UK. Or get some. Background Groundwater drawn from shallow tubewells in Bangladesh is often polluted by nearby pit latrines, which are commonly used toilets in rural and sub-urban areas of the country. In general the following rules can be used as a preliminary assessment; Slopes steeper than 25% can often experience negative effects and should be. The pipe end entering the soakaway must be at a depth of 25mm minimum and the end of the pipe cut at 45°Septic Tank – distance from house in England & Wales. ukA simple, trapped gully will be installed on the edge of the patio nearest the soakaway, and a pipe will link the gully (which could be a linear channel , if preferred) to the cells that are about to be installed. Next, a long channel drain is placed in the trench. And tumble your outlet into it. Question: OSSF Clearance Distance for Septic in Texas . 1,000-gallon septic tanks are 8 feet 2 inches long, 5 feet 8 inches wide, and 5 feet 1 inch deep. Septic tanks should be at least 7 metres away from any habitable parts of the building. Here’s a summary of the regulations for the installation of soakaway crates: Should be located at least 5 metres from the wall of any building. downpipe and a soakaway drain. A percolation test can be conducted by taking the following steps: Dig a 300mm square hole to a depth of 300mm below the proposed invert level of the drainage field. ie the length of your house in metres multiplied by the width. 5 metres is just from the building in any direction, it doestn have to be away from the sides. Distance to House: Part H within the building regulations suggest that Soakaways will need to be more than 5 meters away from the property. It should be constructed at a safe distance of at least 30 m away from local drinking water sources as it can possess the threat of contamination of. BS 6297: 2007 states that for a Sewage Treatment Plant a factor of 0. The soakaway should then be filled with 10mm limestone chippings; Soakaway Installation. The excavation for the soakaway is usually done by mechanical diggers. On 2022-01-31 by Tyler . you have not changed the volume of the discharge or, if you have, it’s not more than 2 cubic metres (2,000 litres) to ground. Hi, a soak away should be a minimum of 5 metres away from your property and if your drive is sloping towards the house you need a minimum of a ACO drain against. The minimum size a soakaway should be constructed to is 30m. The repairs can then be authorised with your insurance company prior to works being completed. 22 ex VAT) View Details. We used to lay them before the 70s (when perforated plastic came in) on my Dad's farm which was heavy clay soil. The discharge point shall be more than 10m from habitable property. Common soakaway designs include trenches, pits, and modular systems made from various materials like concrete, plastic, or stone. A surface drain layed against the house plumbed into a new soakaway (1 cubic meter per 25 square meter of paved area) providing the existing paving is flat and running towards house should solve the problem. Connect the effluent carrying pipe to the soak. There should be no access roads, driveways, walks, buildings, or other structures inside the drainfield area. The key elements of the Part H rules are. Soakaway size. #1. Where an existing soakaway shows signs of instability it is recommended that after the remedial measures have been completed the bottom two metres of the chamber be sealed with a bituthene coating protected by a 150mm thick dwarf wall formed from Class ST4 concrete. The Soakaway or drainage systems be at least five metres away and from a building's wall. Design Considerations. The original driveway drained into the rainwater sewer, but I will be enlarging the driveway. a Single Dwelling House and the 2000 EPA Wastewater Treatment Manuals: Treatment Systems for Single Houses. If you have to install a new ST, it must be 5 metres from a building, 5 metres from a boundary or road, and 10 metres from a watercourse. These are used to hook up the crates to prevent movement while the side-filling materials are added. Septic tanks alone are now not acceptable and are not the most efficient way of handling waste, New house builders today are installing a domestic sewerage treatment plant’. Only clean, uncontaminated surface water shall beCondensate Soakaway Code: SOAK1GR 500mm minimum 3 0 0 m m Hole width 200mm CODE: SOAK1GR Hole and SOAK1GR filled with 10mm Limestone Chippings Holes in SOAK1GR to face away from wall Hole depth 400mm Ground Level Maximum Possible Gradient Side Connection Top Connection 2 3 0 0 m m 1 3 —110mm —100mm 5 4. 3. The soakaway must be designed to BS6297: 2007 and all percolation test results must be submitted. Or undertake a new Installation. 0 3. 4 weeks later the whole is still full o water and shows no signs of percolating. Comparison of SuDS to traditional soakaways Well-designed shallow SuDS that are at or close to the ground surface are quite different from traditional soakaway drainage. So access. Soakaway capacity to hold maximum daily rainfall (taken as 40mm) Storage depth minimum 1. This leads to aerobic digestion and effectively treats the effluent. Minimum soakaway drainage field distances. despite what the building regs say' would be much use as a defence in a court case if your neighbour's house started making it's way towards your. 47m. Log In. The average lifespan of a septic system is estimated at 15 to 40 years, but it may last longer if properly maintained. septic tank distance from house How far should a septic tank be from a house? How far should a soakaway be from a building? How far should the soakaway be from a well,. 26 (£30. On 2022-01-31 by Tyler . #1. ) Section 6. Damage to the dip pipes or baffle within a septic tank can cause a soakaway to become blocked. down 4 feet in one afternoon but was still not free of the clay. First ensure the ground beneath is permeable, which will need a percolation test. Rain water goes. So if I have a soakaway 1m x 1m as close to the corner of a plot as possible that means that I need a minimum of (5m + 1m + 2. No thanks for the thread hi-jack BaS. This is to avoid any issue or possible interaction with either your property or. The water table should not reach the bottom of the pit at any time of the year. A safe distance is generally 30m from watercourses and wells, and 3m from structures. Get in touch to book a Free Quote or just to talk through your project design. Or plumb into existing rain water system, by cutting slabs in situ and laying aco drain to where your down pipe is, providing levels work. 1,250-gallon septic tanks can support a 4-bedroom home. House Plans India; Free House Plans PDF USA Style; 20*50 House Plan | 1000 sq ft House Plan; 30 x 50 House Plans; 30×40 House Plans | 1200 sq ft House Plan; East Facing House Plan; 3 Bedroom House Plans; Civil Engg Menu Toggle. Refill the. 5 3. 3. Our FSA Registration number (FRN) is 750007. For deeper excavations please seek specialist advice. Regulation, i. ) from a sub-surface weeping tile effluent disposal field or evaporation mound or an outdoor pit privy, Canada, Alberta. Yes, they have cut our shared surface water drain, and propose to divert the shared down pipe across to their side to flow onto their new extension roof, then through the guttering and down pipe on the end of extension to their new soak away. 38 times the volume of the hole. What is a Soak Pit? : A soak pit which is also called a soakaway is a closed porous wall chamber that is primary design to allows water to slowly soak into the ground. The downpipe runs vertically from the fascia for. My septic tank is 15' feet from house following leach is 280' feet away from Septic tank and farthest end of leach field is almost 7' foot drop in elevation. 1 March 2017. This allows for a 150mm base layer of sharp sand, 150mm of sand or gravel sidefill all around the outside of the crates. Dig a hole 300mm square to a depth 300mm below the proposed invert level of the incoming pipe. 0 3. i have looked in the valiant manual and it says distance for external pipe should be minimal to prevent freezing then it goes on to say should be a max of 3 metre with a 45mm fall per. Tank passed County Council inspection around 2016. septic tank distance from house How far should a septic tank be from a house? How far should a soakaway be from a building?. 2 = 40m2. Martin’s House, Waterloo Road, Dublin 4 Tel: +353 1 660 2511 Fax +353 1 668 0009. 10 metres away from the watercourse or stream. Answer: As far as building regulations are concerned here is what they say: "Septic tanks should be sited at least 7m from any habitable parts of buildings, and preferably downslope. . Trees and site boundaries, such as fences, must be 3 metres from your wastewater system and 4 meters from the road. The condensate pipework may terminate above or below ground level. You can adopt this best and costly technique to divert rainwater away from the house. This is one of. '. 0 3. S - is the required storage in m 3. As mentioned above, the soakaway will provide an extra layer of filtration before the water can be released. 29 Nov 2009. IIRC, the standard mentions "about 5m" from a building. " As for the soakaway/drainage field this should be as follows. How far away should a Soak away be from the house when laying imprinted concrete,and where should drains be fitted when drive. This publication is available in html and also in. 5. The 5m rule applies to distance away from buildings not particularly boundaries. If you don't find the pipe, come in 1. Part of. 100x1. FAQs about clearances for septic tank, drainfield, soakaway bed, & wells:. . The soak pit should be between 1. Same distances apply to the soakaway. Small bore solid-free sewer: An in-house toilet discharging to a septic tank (or on-site digester) with liquids disposal viaExcavate a hole 300mm square to the proposed depth of the pit and trench. I have to state that it was hard work digging the hole, as it. 5m to 4m. The distance you need to be away depends partly on the soil so if you are wanting to get close to the house (say, closer than 2 or 3 times the wall height) you would definitely want to talk to an engineer. If you find the pipe, go out another 3 metres. Does anyone have any experience of creating a miracle soakaway. These are available from us. Regulation, i. We would like to show you a description here but the site won’t allow us. 5 and 4 m deep, but as a rule of thumb, never less than 2 m above the groundwater table. In the picture below - a poorly designed and constructed soakaway is located too close to the proposed extension, whose foundation trench can just be seen. 4m3 per crate) £57. 13 Aug 2013. long way from the house and/or if some of the users have difficulty walking. kingandy2nd. 3. This is called a percolation test. The discharge point. Surrey. See more of Soakaway crates on Facebook. septic tank distance from house How far should a septic tank be from a house? How far should a soakaway be from a building? How far should the soakaway be from a well,. For example:-. Which body is responsible for enforcing the location of the soakaway being a sufficient distance from the boundary, and also the new building, in accordance with Council Policy? Is. 4m (400 litres/0. near. Beyond that and the minimum clearance distance is that we have already given above on this page, distance is going to be determined by the site and the available space. 1 For disposal of non-domestic wastewater, the setback distance shall be determined by a hydrogeological study in accordance with Section 17(b) of Chapter 3, but shall not be less than the distances shown in Table 4. 29 ex VAT)True Oga mi. 4.