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HomeMy WebLinkAbout12-20-2017 Septic Design2250,1300 10 X 50 Joseph Olson D.B.A. 29 GPM Rusty ©lson's--Soil and Percolation Testing 13' TDH Joseph J. Olson--MPCA License # 810 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 Fax (763) 498-8290 City of Orono Septic Plan Review December 20, 2017 ��,✓% William Jenney Reviewer: 1320 Orono Oaks Drive All work shall /Jbe done in full compliance Orono, Hennepin County with all applicable septic and zoning code. This on-site Sewage Treatment System is designed for a Type III four-bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The system is a type III because Fill soils and existing system. The existing system is not overloaded. The proposed new system should be built over the top of the existing system. Break the lines between the drop boxes. The periodically saturated soils were located at 16-18 inches (mottled soil). Due to the periodically saturated soils, a pressurized mound system with 6 inches of rock will need to be installed to treat the septic effluent. The bottom of the treatment area must be located at least 3' above the saturated soils. This system is designed with 6 inches of rock The existing septic system does not conform to the state code chapter 7080 All neighboring wells are greater than 100' from proposed treatment areas. The soils at a depth of 12" have a percolation rate averaging 10 MPI. The existing septic tanks must be abandoned and a 2250 -gallon septic tank needs to be installed. All new tanks need to be insulated if there is less than two feet of cover over the top of the tanks. Clean outs must be installed on the end of the laterals for maintenance. A 1300 -gallon pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure. A warning device must be installed with light and sound devices; this is in case of a pump failure. A flow measurement device must be installed. Including but not limited to a water meter, event counter, running time clocks or electronically controlled dosing. Nothing other than grav water, (laundry, showers etc.) Human water and toilet tissue should be disposed of into the septic tanks. Garbage disposals are not recommended. Additives must not be used, they may cause harmful damage to your septic system. Iron filters must not go into the system It is recommended that you pump the tank every two years for two septic tanks Sincerely, Joseph J. Olson 2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: William Jenney Site Address: 1320 Orono Oaks Drive Comments: Date: 12/19/2017 PID: 3511823340007 instructions: = = enter data =adjust if desired = = computer calculated - DO NOT CHANGE! 1) E'bedroom Type III Residential System 2) F 600 GPD design flow 3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) Tank options: none >> 1.2 GPD/fta mound sand loading rate contour loading rate of 12 req's a min 50 ft. long rockbed 6) 10.0 ft rockbed width 50.0 ft rockbed length 7) =ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection 8) laterals 48.0 feet long 17.0 perfs / lateral 51 perfs total (1 /2 a perf means the first perf starts at the middle feed manifold) g) 7/32 inch perfs at =feet residual head gives 0.56 'gpm flow rate per perforation for this perf size Et spacing, Ft pipe size on line 12, max perfs/lateral = 30 line #8 must be less OK 10) 4.0 doses per day (4 minimum) 11) 150 gallons per dose (treatment volume) 2.00 5x 12} 2.00 inch diameter laterals must be used to meet "4x pipe volume' requirement 2,00 3x 13) =feet of 2.0 inch supply line leads to gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 156 gallons TOTAL pump out volume (treatment +drainback) lslelfeet vertical lift pump to mound laterals, leads to a: F29 GPM C 13 feet of head, Pump requirement (note. >50gpm may require an extra 3-6' of head) 17) 500 IgaL Dose tank (code minimum) 1300 gat Dose tank (design size / LUG req'd) at 25.49 gpi leads to a 181 =inch swing on Demand float, or timed dosing of 5.4 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design ftow)l 9 Ihrs OFF test and adjust as necessary) 19)12 inches from bottom of tank to "Pump OFF" float 30) 18 inches from bottom of tank to "Pump ON" float, orM31 inches to "Timer ON" float if time dosed 2n 21 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed 22) 765 ,gallons reserve capacity (after High Level Alarm is activated) 3) 0.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of2.7 (minimum) (this must match the soil boring tog) desired mound ratio 2.7 4apercent site slope (0 20% range) 10 (% downslope site slope, if different than upslope) sj 16 inches, or 1.3 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone containsF =inches inches of 0% soil credit, and inches of 50% soil credit. Giving a: 61 20 inch, or 1.7 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! >> 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) si 0.0 ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: IN upslope ratio 13 ft. upslope berm sideslope 12 ft. sideslope berms 1) downslope 1 20 Ift. downstope berm Overall Dimensions: 10.0 ft. wide by 50.0 ' ft. long Rock bed 43 ft. wide by 1 74 1 ft. long Mound footprint Umloue Berm Limiting con 4" inspection pipe r— '18" cover on top 13 1.7 Clean sand lift IL. 3j Depth to Limiting --------------- r Absorption Width Downslope berm 20 12" cover on sides (6" loamy rap & 6" topsril) 27.0 ------ 1— —_— Dote; For 0 to 1% slopes, Ahsorptlol? WI&M is measured from the Bedegualty in both directions. For stapes >1%, Absorptfon Wfdth is measured downhill from the upslope edge of the fid. Rock Bed: 10.0 ft. by 50.0 ft. by inches under pipe, plus 20% gives 17 yd' or *1.4- 24 ton Mound Sand: (note: volume is based on 3:114:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 31.0 up + 47.5 downslope + 9.8 ends + 33.6 under rock = 146 yd' or *1.4= 205 ton plus 20% Loamy Cap: 39 ft. by [=ft. 6" deep, plus 20% gives Topsoil: =ft. by =ft. 6" deep, plus 20% gives I hereby certify that I have Signature work in accordance Rusty Olson's Soil ft Perc Company 61 yd' or *1.4= EEiton 71 Yd' or *1.4= 99 ton applicable ordinances, rules a 810 12/19/2017 License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none :Mb Larger LanK wrui rnuLuple comp/ LanKs 1300 gallon Dose tank (minimum) at 25.49 gpi 29 GPM 13 ft. of head, Pump required E 6.1 linch swing on Demand float which translates to roughly 4.1 inches of float tether length if time dosing is required - >5.4 minutes ON time l* 0hours OFF time 1$ inches from bottom of tank to "pump ON" float, or 12 inches to "timer ON" float 21 inches from bottom of tank to "Hi Level Alarm" or 1 31 jinches to "Hi level alarm" if time dosed 33 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 20 inch, or 1.7 ft. Sand Lift Mound 10.0 ft. wide by 50.0 ft. long Rock bed 3 laterals 2.00 inch diameter =ft. long E3.0 ft. lateral spacing 7/32 inch perfs 3.0 ft. perforation spacing No Effluent filter €t alarm 3 JcLean out Et valve box assemblies 27.0 ft.Total sand ABSORPTION width (minimum) 0.0 ft. upslope and sideslope (sand beyond rockbed, minimum) 17.0 ft. Downslope (sand beyond rockbed, minimum) Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 13 ft. upslope berm 3:1sideslope 12 ft. sideslope berms 3:1 downslope 1 20 Ift. downslope berm 4" inspection pipe 18" cover on top Upslope berm 13 . 1, Downslope berm 20 12" cover on sides (6" loamy cap & 6" topsoil) 1.7 11 Clean sand Lift 1.3 Depth to Limiting Limiting Condition ---------•---__ Absorption Width 27.0 — --- I --- _,____ Note: For 0 to 1 slopes, Absorption KYdth is measured from the Bedequalty in both directions. For slopes >1%, Absvrptloo Width is measured downhilt from the upslope edge of the Bed Rock Bed: 17.0 yd or *1.4= 24 ton Mound Sand: 146 yd or "1.4= 205 ton Loamy Cap: 61 yd3 or "1.4- 85 ton Topsoil: 71 yd or •1.4= 99 ton inches under pipe calculation based on 3:1/4:1 slope from top of rockbe( 6" deep 6" deep INSPECTOR CHECKLIST - mound 1 JZU Urono Oaks Urive WELL setbacks: 20' to pressure tested sewer line (5 psi for 15 min) 50' to everything 100' to dispersal area with shallow well PROPERTY LINES setback: 10' to everything Road setback: platted: 10' prop line. Metes Et bounds: out of road easement, or outer ditch. LAKE / BLUFF setback: 20' for bluff. Lakes: GD , RD NE _. Protected wetland . Building setbacks: 10' for everything, 20' for dispersal area. WATER LINE under pressure sc 10' to bed,tank Et sewer line. (else sewer line > 12" below) Sewer line Et baffle connection (no 90's, 3' between 45's, slope min 1" in 8', max 2" in 8') (no depth req's, clean out every 100', Sch 40 pipe) Septic tank and risers (water tight, insulated, proper depth, existing verified by pumping) mfg 2250 gallons none Riser over outlet, riser over inlet or center, and 6"+ inspection pipe over any remaining baffles. No effluent filter Et alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1300 gallons dose pump 29 gpm 13 head VERIFY PUMP CURVE 5.4 min ON 9 hr OFF float setting drop 6.1 inches at 25.5 gpi "DESIGNED" 4.1 inches approx float tether length 156.0 gal dose divided by gpi "INSTALLED" = inches float drop (field corrected LABEL pump requirements and drawdown on riser or panel Cam tock reachable from grade - 30" max. J -hook weep hole. Supply line access (no hard 90's) 2.0 inch supply pipe: Sch40, sloped 1/8"+, supported by 4" sch40 sleeve or compacted, and buried 6"+. splice box / control panel / electrical connections flow measurement: CT, ETM, time dosed, home water meter mound absorption area rough up mound rock dimensions 10.0 X 50.0 Sand lift depth 20 inches. (Jar test : 2" sand leaves < 1 /8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope Bermed topsoil beyond rockbed 13 upslope cover depth of 12-18"+ VERIFY 3 laterals (1.2' from edge of rock) 2.00 inch pipe size (Sch40 pipe Et fittings) 3.0 ft lateral spacing 7132 inch perforations 3.0 ft perforation spacing 17.0 downstope 12 sideslope 20 downslope Air inlet at end of laterals, and at top feed manifold if necessary. VERIFY clean outs (no hard 90's) 4" inspection pipe to bottom of rock, anchored VERIFY Abandon existing system - if necessary monitoring plan and type well abandonment form - if necessary 7711e -use existing tank certification I 7 \ \ k $ Q» f L CL§ f S — � 2 = to m § � V-- m ] � E R a 224D lie a f W / (O\ E ( k $ t \ 4-1 k k c Ln e 2 2 $ » 2 | Soil Observation Log wwn.SepticResource.corn vers 12.4 Owner Information Property Owner / project: William Jenney Date 12/16/2017 Property Address/ PI D: 1320 Orono Oaks Drive Soil Survey Information. ❑ refer to attached soil survey Parent matl's: ❑� Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ Summit ❑J Shoulder ❑ Side slope ❑ Toe slope soil survey snap units: 141 CZ slope 3-10 % direction- Linear Soil Log #1 ❑ Boring ❑ Pit Elevation 106.2 Depth to SHWT 16 Inches Depth (in) Texture fiagrnent °'o matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr3/1 Loose Moderate Blocky 6-12 Loam ; 10}r4 l-nable Strong Blocky. 12-16 Clay Loam 10"--1 4 Friable Strong Blocky 16-24 Clay Loam <35 1Oyr5/4 IOy4/$,1-6/10y Firm Strong Prismatic <35 loose loose single grain 35 -50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive Comments: 1320 Orono Oaks Drive Soil Log #2 0 Boring ❑ Pit Elevation 106.2 Depth to SHWT 18 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-14 Topsoil <35 1O\r3 2 Loose Moderate Blocks 14-I8 Loam <35 10}r4;3 Friable Strong Blocky 18-1-4 Clay Loam <35 1Oyr5/4 LOy4/8,1-6/10y Firm Strong Block 1320 Orono Oaks Drive Soil Log 43 ❑ Boring ❑ Pit Elevation 10.2 Depth to SHWT 16 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-8 Topsoil -'35 10yr3/2 Loose Moderate Blocky 8-16 Loam i Oyr4/3 Friable Strong Blocky 16-24 Clay Loam 5 IOyr5/4 I Oy4/8,1-6/1 Oy Finn Strong Blocky I hereby certify this work was completed in accordance with MN 7080 and any local reqs, Rusty Olson's Soil & Pere. 810 U61<0-'er Signature Company License 4 Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 11:40 A.M. On 12/13/17 Location: 1320 Orono Oaks Drive Hole number: 1 Date hole was prepared: 12/12/17 Depth of hole bottom _12 inches, Diameter of hole _6"_inches. Soil data from test hole: Depth, inches Soil texture 0-6 Topsoil 10yr311 6-12 Loam 10yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 12/12/17 depth of initial water filling 12 inches above the hole bottom Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic Siphon Maximum water depth above hole bottom during tests 6 inches Time Time Depth Drop in H2O Perc Rate 11:50 12:20 6" 5.0 6.0 12:23 12:53 6" 4.8 6.2 12:54 1:24 6" 4.7 6.4 AVERAGE PERC. RATE 6.2 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 11:40 A.M. On 12/13/17 Location: 1320 Orono Oaks Drive Hole number: 2 Date hole was prepared: 12/12/17 Depth of hole bottom ,12"_ inches, Diameter of hole _6"_inches. Soil data from test hole: Depth, inches Soil texture 0-12 Topsoil 14yr312 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches.- Date nches;Date of initial water filling 12/12/17 depth of initial water filling 12 inches above the hole bottom Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic Siphon Maximum water depth above hole bottom during tests 6 inches Time Time Depth Drop in H2O Perc Rate 11:51 12:21 6" 2.2 13.6 12:22 12:52 6" 22 13.6 12:55 1:25 6" 22 13.6 AVERAGE PERC. RATE 13.6 MPI UNNIVERSITY OF MINNESOTA Septic System Management Plan for Above Grade Systems The goal of a septic system is to protect human health and the environment by properly treating wastewater before returning it to the environment. Your septic system is designed to kill harmful organisms and remove pollutants before the water is recycled back into our lakes, streams and groundwater. This management plan will identify the operation and maintenance activities necessary to ensure long- term performance of your septic system. Some of these activities must be performed by you, the homeowner, Other tasks must be performed by a licensed septic maintainer or service provider, However, it is YOUR responsibility to make sure all tasks get accomplished in a timely manner. The University of Minnesota's Septic System Owner's Guide contains additional tips and recommendations designed to extend the effective life of your system and save you money over time. Proper septic system design, installation, operation and maintenance means safe and clean water! Property Owner Email Property Address 1320 Orono Oaks Drive Property ID 3511823340007 System Designer Joseph J Olson Contact Info 763-498-8779 System Installer Contact Info Service Provider/Maintainer Contact Info Permitting Authority Contact Info Permit # Date Inspected Keep this Management Plan with your Septic System Owner's Guide. The Septic System Owner's Guide includes a folder to hold maintenance records including pumping, inspection and evaluation reports. Ask your septic professional to also: • Attach permit information, designer drawings and as -built of your system, if they are available. • Keep copies of all pumping records and other maintenance and repair invoices with this document. • Review this document with your maintenance professional at each visit; discuss any changes in product use, activities, or water -use appliances. For a copy of the Septic System Owner's Guide, visit www.bookstores,umn.edu and search for the word "septic" or call 800-322-8642. For more information see http://septic.umn.edu Version: August 2015 UNIVERSITY Septic System Management Plan OF MINNESOTA for Above Grade Systems Your Septic System Manlwle In$geLtlpn p�pp - Mount • --PFlfwatrd lateral tleanaut- -'" Fhpe �, Crosssectiwr of mound _ 05eibr n mefia inspecnn pipe--" - 4oa,riy tr�l1 �`'� iopwN . _ Vegeta on „ - � - fraRra.Sud- - m.l.mit g�orNilion Septic System Specifics System Type: (J 1 Q II III QIV* LJ V* ❑ System is subject to operating permit* (Based on MN Rules Chapter 7080.2200 — 2400) F-1 System uses UV disinfection unit* *Additional Management Plan required Type of advanced treatment unit ❑ Second tank Tank voluine: gallons Dwelling Type Well Construction Number of bedrooms: 4 Well depth (ft): 182 System capacity/ design flow (gpd): 600 ❑ Cased well Casing depth: 192 Anticipated average daily flow (gpd): 600 ❑ Other (specify): Comments Distance from septic (ft): 107 Is the well on the design drawing? (FY N Business? : ()Y (F)N What type? Septic Tank ❑ First tank Tank volume: 2250 gallons ❑ Pump Tank 1300 gallons Does tank have two compartments? l)Y Q N ❑ Effluent Pump make/model: ❑ Second tank Tank voluine: gallons Pump capacity GPM ❑ Tank is constructed of Concrete TDH Feet of ]lead ❑ Effluent screen: 0 Y � N Alarm QY ♦Fi N ❑ Alarm location Soil Treatment Area (STA) Mound/At-Grade area (width x length): 43 ft x 74 ft ❑ 10 50 Rock bed size (width x length): ft x ft Inspection ports Cleanouts ❑ Location of additional STA: wa ❑ Surface water diversions Type of distribution media: rock ❑ Additional STA not available -2- UNIVERSITY Septic System Management Plan OF MINNESOTA .dor Above Grade Systems Homeowner Management Tasks These operation and maintenance activities are your responsibility. Chart on page 6 can help track your activities. Your toilet is not a garbage can. Do not flush anything besides human waste and toilet paper. No wet wipes, cigarette butts, disposal diapers, used medicine, feminine products or other trash! The system and septic tanks needs to be checked every 24 months Your service provider or pumper/maintainer should evaluate if your tank needs to be pumped more or less often. Seasonally or several times per year Leaks. Check (listen, look) for leaks in toilets and dripping faucets. Repair leaks promptly. Soil treatment area. Regularly check for wet or spongy soil around your soil treatment area. If surfaced sewage or strong odors are not corrected by pumping the tank or fixing broken caps and leaks, call your service professional. Untreated sewage tnay make humans and animals sick. Keep bikes, snowmobiles and other traffic off and control borrowing animals. • Alarms. Alarms signal when there is a problem; contact your service professional any time the alarm signals. • Lint filter. If you have a lint filter, check for lint buildup and clean when necessary. If you do not have one, consider adding one after washing machine. • Effluent screen. If you do not have one, consider having one installed the next time the tank is cleaned along with an alarm. Annually • Water usage rate. A water meter or another device can be used to monitor your average daily water use. Compare your water usage rate to the design flow of your system (listed on the next page). Contact your septic professional if your average daily flow over the course of a month exceeds 70% of the design flow for your system. • Caps. Make sure that all caps and lids are intact and in place. Inspect for damaged caps at least every fall. Pix or replace damaged caps before winter to help prevent freezing issues. • Water conditioning devices. See Page 5 for a list of devices. When possible, program the recharge frequency based on water demand (gallons) rather than time (days). Recharging too frequently may negatively impact your septic system. Consider updating to demand operation if your system currently uses time, • Review your water usage rate. Review the Water Use Appliance chart on Page 5. Discuss any major changes with your service provider or pumper/maintainer. During each visit by a service provider or pumper/maintainer Make sure that your service professional services the tank through the manhole. (NOT though a 4" or 6" diameter inspection port.) Ask how full your tank was with sludge and scum to determine if your service interval is appropriate. Ask your pumper/maintainer to accomplish the tasks listed on the Professional Tasks on Page 4. - 3 - UNIVERSITY Septic System Management Plan OF MINNESOTA,for Above Grade Systems Professional Management Tasks These are the operation and maintenance activities that a punnper/maintainer perforins to help ensure long term performance ofyour system. At each visit a written report/record must be provided to homeowner. Plumbing/Source of Wastewater • Review the Water Use Appliance Chart on Page 5 with homeowner. Discuss any changes in water use and the impact those changes may have on the septic system. • Review water usage rates (if available) with homeowner. Septic Tank/Pump Tanks • Manhole lid. A riser is recommended if the lid is not accessible from the ground surface. Insulate the riser cover for frost protection. • Liquid level. Check to make sure the tank is not leaking. The liquid level should be level with the bottom of the outlet pipe. (If the water level is below the bottom of the outlet pipe, the tank may not be watertight. If the water level is higher than the bottom of the outlet pipe of the tank, the effluent screen may need cleaning, or there may be ponding in the soil treatment area.) • Inspection pipes. Replace damaged or missing pipes and caps. Baffles. Check to make sure they are in place and attached, and that inlet/outlet baffles are clear of buildup or obstructions. Effluent screen. Check to make sure it is in place; clean per manufacturer recommendation. Recommend retrofitted installation if one is not present. • Alarm. Verify that the alarm works. • Scum and sludge. Measure scum and sludge in each compartment of each septic and pump tank, pump if needed. Pump • Pump and controls. Check to make sure the pump and controls are operating correctly. • Pump vault. Check to make sure it is in place; clean per manufacturer recommendations. • Alarm. Verify that the alar n works. • Drainback. Check to make sure it is draining properly. • Event counter or elapsed time meter. Check to see if there is an event counter or elapsed tune meter for the pump. If there is one or both, calculate the water usage rate and compare to the anticipated use listed on Design and Page 2. Dose Volume: gallons: Pump run time: Minutes Soil Treatment Area • Inspection pipes. Check to make sure they are properly capped. Replace caps and pipes that are damaged. • Surfacing of effluent. Check for surfacing effluent or other signs of problems. • Lateral flushing. Check lateral distribution; if cleanouts exist, flush and clean at recommended frequency. • Vegetation - Check to see that a good growth of vegetation is covering the system. All other components — evaluate as listed here: -4- UNIVERSITY Septic System Management Plan OF MINNESOTA for Above Grade Systems Water -Use Appliances and Equipment in the Home Appliance Impacts on System Management Tips • Uses additional water. * Use of a garbage disposal is not recommended. • Adds solids to the tank. • Minimize garbage disposal use. Compost instead. Garbage disposal Finely -ground y Fine/ ound solids ma not settle. To prevent solids from exiting the tank, have your Unsettled solids can exit the tank tank pumped more frequently. and enter the soil treatment area. * Add an effluent screen to your tank. • Washing several loads on one day • Choose a front -loader or water -saving top -loader, uses a lot of water and may overload these units use less water than older models. your system. • Limit the addition of extra solids to your tank by • Overloading your system may using liquid or easily biodegradable detergents. Washing machine prevent solids from settling out in Limit use of bleach -based detergents and fabric the tank. Unsettled solids can exit softeners. the tank and enter the soil treatment Install a lint filter after the washer and an effluent area, screen to your tank • Wash only full loads and think even — spread your laundry loads throughout the week. • Powdered and/or high -phosphorus Use gel detergents. Powdered detergents may add detergents can negatively impact the solids to the tank. Dishwasher performance of your tank and soil • Use detergents that are low or no -phosphorus. treatment area. • Wash only full loads. • New models promote -no scraping", -Scrape your dishes anyways to keep undigested They have a garbage disposal inside. solids out of your septic system. * Finely -ground solids may not settle. . Expand septic tank capacity by a factor of 1.5. Grinder pump (in Unsettled solids can exit the tank • Include pump monitoring in your maintenance home) and enter the soil treatment area. schedule to ensure that it is working properly. * Add an effluent screen. • Large volume of water may • Avoid using other water -use appliances at the same Large bathtub overload your system, time. For example, don't wash clothes and take a (whirlpool) • Heavy use of bath oils and soaps can bath at the same time. impact biological activity in your • Use oils, soaps, and cleaners in the bath or shower tank and soil treatment area. sparingly. Clean Water Uses Impacts on System Management Tips High -efficiency • Drip may result in frozen pipes • Re-route water directly out of the house. Do not furnace during cold weather. route furnace discharge to your septic system. Water softener • Salt in recharge water may affect * These sources produce water that is not sewage and Iron filter system performance. should not go into your septic system. Reverse osmosis • Recharge water may hydraulically • Reroute water from these sources to another outlet, overload the system. such as a dry well, draintile or old drainfield. * When replacing, consider using a demand -based • Water from these sources will Surface drainage overload the system and is recharge vs. a time -based recharge. Footing drains prohibited from entering septic • Check valves to ensure proper operation; have unit system. serviced per manufacturer directions -5- UNIVERSITY Septic System Management Plan OF MINNESOTA for Above Grads Systems Homeowner Maintenance Log Track maintenance activities here for easv reference, See list of management tasks on pages 3 and 4. Activity Date accomplished Check frequently: Leaks: check for plumbing leaks* Soil treatment area check for surfacing** Lint filter: check clean if needed* Effluent screen (ifowner-maintained)*** Alarin * * Check rnnnualler Water usage rate (maximum gpd ) Caps: inspect, replace if needed Water use appliances — review use Other: *Monthly **Quarterly * * * Bi -Annually Notes: "As the owner of this SSTS, I understand it is my responsibility to properly operate and maintain the sewage treatment system on this property, utilizing the Management Plan. If requirements in this Management Plan are not met, I will promptly notify the permitting authority and take necessary corrective actions. If I have a new system, I agree to adequately protect the reserve area for future use as a soil treatment system." Property Owner Signature: Date Management Plan Prepared By: Joseph J Olson Certification # 1255 Permitting A V2015 Regents of the University of Minnesota. All rights reserved. The University of Minnesota is an equal opportunity educator and employer. This material is available in alternative fomtats upon request. Contact the Water Resources Center, 612-624-9282. The Onsite Sewage Treatment Program is delivered by the University of Minnesota Extension Service and the University of Minnesota Water Resources Center. - 6