Arkansas Onsite Wastewater Rules and Regulations Quiz

The statement is stating that there is no minimum lot size requirement for using an onsite wastewater system. This means that regardless of the size of the property, an onsite wastewater system can be utilized. Therefore, the answer is true.

The proposed septic system is 158 ft from the high water mark of the lake, which is greater than 100 ft. Additionally, it is stated that the land is 3 miles from a public water intake, which is greater than 1/4 mile. Therefore, based on these conditions, pre-treatment will not be required as part of the design.

Since it is pre-1977, only a primary is required. However, it should be sized using 150 gallons per bedroom. If that cannot be done, then a secondary area is required. See Memo EHS 0015. 

Be able to pick out what soil type is Low, Moderate or High Conductivity.

A septic system must be located at least 300 feet away from a spring used as a public water supply. This distance is necessary to prevent contamination of the water source by any potential sewage or waste from the septic system. By maintaining a sufficient distance, the risk of harmful bacteria or pollutants reaching the water supply is minimized, ensuring the safety and quality of the water for public consumption.

The setback to a stream or river refers to the distance that should be maintained between a development or structure and the water body. A setback of 100 ft means that any construction or activity should be at least 100 ft away from the stream or river. This distance is important to protect the water body from potential pollution, erosion, and other negative impacts. It also helps to preserve the natural habitat and maintain the overall health of the stream or river ecosystem.

Manganese nodules greater than 2mm diameter can indicate a brief seasonal water table because they are formed when groundwater rises and brings manganese minerals to the surface. This suggests that there is periodic saturation of the soil, leading to the formation of these nodules. The other options, clay greater than 35%, chroma 2 less than 20%, and chroma 3 greater than 30%, do not directly relate to the presence of a brief seasonal water table.

If the stubout of a home is within 300 ft of a sanitary sewer line, then they must tie to public sewer instead of installing a septic system.

The setback to an open loop geothermal well is 100 ft. This means that the well needs to be at least 100 ft away from any water supply, such as a river or lake, to avoid any interference or contamination. This distance ensures that the geothermal system operates efficiently and safely without any negative impact on the surrounding water sources.

Setback to a water line (private or main) is 10 feet.

Yes, you need to know this.

A Brief Seasonal Water Table is described by the presence of Common 3mm Fe nodules.

The maximum percent of clay allowable in material to be used as a soil cap is 27%. This is because clay is a type of soil that has high shrink-swell potential and poor drainage characteristics. When used as a soil cap, it is important to limit the clay content to prevent issues such as cracking, settling, and water retention. Therefore, a maximum limit of 27% is set to ensure the stability and effectiveness of the soil cap in capping fill systems.

Surface DIscharging systems also have different setback requirements than standard systems.

The slope of the field can be calculated by finding the difference in elevation between the first and fourth lines and dividing it by the total distance between them. In this case, the difference in elevation is 12 ft - 3 ft = 9 ft. The total distance between the lines is 3 lines * 10 ft = 30 ft. Therefore, the slope of the field is 9 ft / 30 ft = 0.3 or 30%.

The maximum sand and clay content allowed in the material being used for a soil cap is 60% and 27%. This means that the material should not have more than 60% sand content and 27% clay content. It is important to adhere to these limits in order to ensure the stability and effectiveness of the soil cap.

multiply 1 ft of gravel depth X 2 ft wide trenches X 65 ft long x 5 trenches = cubic yards of gravel needed for whole job.

Only if the leads/wiring from the pump won't reach the control panel.

The required setback between any part of a septic system and a sinkhole is 100 ft. This means that there should be a distance of at least 100 ft between the septic system and any sinkhole. This is important to prevent any potential contamination of the sinkhole by the septic system, as well as to ensure the stability and safety of the septic system itself.

Minimum 1000 gallons or 2X the daily flow, whichever is greater.

The adjusted long is calculated by subtracting the LSWT (Long Side Wall Thickness) from the MSWT (Minimum Short Wall Thickness). In this case, the MSWT is 20" and the LSWT is 29". Therefore, the adjusted long would be 20" - 29" = -9". However, since negative values are not possible for the adjusted long, the answer would be 24", which is the closest option to the calculated value.

On a sloping ground system, the flow line out of the dbox must be the same elevation or higher than the elevation at the ground of line 1 to get "maximum storage".

The maximum slope allowable for installing a capping fill system is 12%. This means that the slope of the fill system should not exceed 12% to ensure stability and prevent erosion. A steeper slope may result in the fill material sliding or slumping, which can compromise the integrity of the system. Therefore, it is important to adhere to the maximum slope limit of 12% to ensure the effectiveness and safety of the capping fill system.

The correct answer is 25% of daily flow. When designing a pump system, the maximum dose allowed is typically 25% of the daily flow. This means that the pump should not exceed 25% of the total volume of liquid that is being pumped in a day. This limit is set to ensure that the system operates efficiently and does not overload the pump or cause any damage. It also allows for a margin of safety in case of any fluctuations or variations in the flow rate.

It is minimum 10 ft or until the pipe reaches solid ground again. Whichever is longer. The outlet pipe on a tank is a "weak spot" where the pipe could be sheared off, crushed, etc and thus needs the strength of SCH 40.

The given information states that the clay percentage in the horizon is 51%, and there are no redoximorphic features. It also mentions that the primary color is 7.5 YR4/6. Based on this information, the horizon can be classified as a Long Seasonal Water Table (SWT). The absence of redoximorphic features suggests that there is no evidence of prolonged waterlogging, indicating that the water table fluctuates over a longer period. The clay percentage and color are not relevant in determining the horizon's classification as an SWT.

The correct setbacks for the discharge point on a surface discharging system are 300 feet from adjacent dwellings, 150 feet from adjacent property lines, 100 feet from the dwelling served, and 200 feet from the property line downslope of the discharge point. These setbacks are necessary to ensure that the discharge does not cause any harm or inconvenience to neighboring properties or wells. By maintaining these distances, any potential negative impacts from the discharge can be minimized or avoided altogether.

The adjusted moderate is calculated by taking the average of the body surface water temperature (BSWT) and the mean skin water temperature (MSWT). In this case, the BSWT is given as 20" and the MSWT is given as 35". Therefore, the average of these two temperatures is 27.5". However, since the answer choices only include whole numbers, the closest whole number to 27.5" is 28". Therefore, the correct answer is 28".

This soil horizon contains Fe or Mn nodules/concretions of 2mm or larger, and/or Chroma 3 depletions of less than 20%. These characteristics suggest the presence of water that moves through the soil quickly, which is indicative of a brief seasonal water table.

The correct answer is 1.25 gal/sq ft/day. The maximum loading rate for an Intermittent Sand Filter is the highest rate at which wastewater can be applied to the filter without causing clogging or other operational issues. A higher loading rate indicates that the filter can handle a larger volume of wastewater per square foot per day, making it more efficient and effective in treating wastewater. Therefore, 1.25 gal/sq ft/day is the correct answer as it represents the highest loading rate among the given options.

Residential strength effluent is less than or equal to: 300ppm BOD, 300 ppm TSS and 25ppm Fats, Oil & Grease.

Sand is the largest, Clay is the smallest.

The setback to a closed-loop geothermal well is 50 ft. This means that the well needs to be at least 50 ft away from any other structure or property line. This is to ensure that there is enough space for the well to operate efficiently and safely. Placing the well too close to other structures or property lines can cause interference with the geothermal system and potentially lead to damage or inefficiency.

Until 1977, septic systems were designed based on "Bulletin 9" rules. So, in a pre-1977 subdivision, the designer must design for 150 gallons per bedroom. If they choose not to do that and instead want to use current GPD sizing, then they must design both a primary and secondary area. See memo EHGS 0015 issued 10-19-15.

The correct loading rate is 0.34. The loading rate refers to the amount of water that can be applied to a specific area of soil per unit of time. In this case, the loading rate is determined based on the spacing between the drains (8 ft centers) and the hydraulic conductivity of the soil (moderate). The loading rate is calculated by dividing the hydraulic conductivity by the sum of the depth of the soil to the water table (BSWT, MSWT, and LSWT). In this case, the loading rate is 0.34.

Trick question. You receive 50% credit for each inch of soil, up to 7 inches. So, for a 12 inch deep cap, you would only adjust your loading rate by 6 inches (aka 6 inches credit).

The minimum size of a grease trap required when also using a septic system is 500 gallons. This is because a septic system requires a certain capacity to effectively treat and process waste, and a grease trap is necessary to prevent grease and oils from entering the septic system and causing clogs or damage. Therefore, a minimum size of 500 gallons is needed to ensure that an adequate amount of grease can be captured and removed from the wastewater before it enters the septic system.

Square feet, not linear feet. GPD divided by loading rate = sq ft.

# of gallons in the dose divided by the gallons per inch.

The minimum depth the trench must extend into natural soil when designing a capping fill system is 4 inches.

The given answer indicates a soil profile with a moderate seasonal water table. The 10YR 4/1 refers to the color of the soil, indicating a reddish-yellow hue. The 37% clay content suggests a good water-holding capacity, while the 48% clay content indicates a moderate drainage capability. The term "silty clay" further supports the presence of a moderate water table, as silty soils can retain water but also allow for some drainage. Overall, this soil profile suggests a balance between water retention and drainage, characteristic of a moderate seasonal water table.

The adjusted long is calculated by subtracting the LSWT (33") from the BSWT (18"). Therefore, the adjusted long is 15".

First 10 ft from tank MUST be SCH 40. Can then switch to SDR 35 if desired.

This answer is incorrect because it does not accurately describe a Long Seasonal Water Table. A Long Seasonal Water Table refers to a situation where the water table remains high for a long period of time, typically during the wet season, and can lead to waterlogged soil conditions. The correct answer should provide information about the water table and its duration, rather than focusing on soil characteristics such as clay content or chroma.

If a lot is within 1/4 mile of the intake on a public water supply lake, then all parts of the septic system must be 300 ft from the high water mark of that lake. If that cannot be done, then the system must be designed for pre-treatment and preferably, disinfection.

The correct answer is 10 because the Total Dynamic Head (TDH) is calculated by adding up the different vertical and horizontal components of the system. In this case, the vertical components are the ground level at the tank (9 ft), the depth of the tank (4.25 ft), the elevation of the distribution device (3.7 ft), and the distal pressure for the manifold (5 ft). The horizontal component is the force main length (50 ft). Adding up all these components gives a TDH of 10 ft.

The friction loss in a pipe is caused by the resistance of the fluid flowing through it. It is influenced by factors such as the length and diameter of the pipe, as well as the flow rate. In this case, the given pipe is 1 1/4 inch in diameter and 250 ft long, with a pump rate of 20 gpm. To calculate the friction loss, we would typically use a formula that takes into account these variables. However, without the formula and additional information, it is not possible to provide a detailed explanation.

The correct answer is "Brief 18", Moderate 25"." This is because the soil profile shows a change in color and texture at the 18" depth, indicating a brief seasonal water table (SWT) presence. Additionally, there is a depletion of color and texture at the 25" depth, suggesting a moderate SWT presence.

The correct loading rate is 0.16. The loading rate is calculated by dividing the weight of the material being loaded by the spacing between the supports. In this case, the BSWT (base slab weight) is 12" and the MSWT (mid-slab weight) is 27". Since the weight is not given, we cannot calculate the loading rate.

Depletions are areas leached or depleted within the matrix. Nodules, Masses and concretions are accumulations of Fe & Mn.