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HomeMy WebLinkAboutSeptic System Management Plan • UNIVERSITY 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 Pillar Homes Property Address 3955 Watertown Road Property ID 3211823320004 System Designer Joseph J Olson Phone 763-498-8779 'W'?--6 =�s'3'�ce System Installer �- 4 41�-S �- S� Phone 7 2 Service Provider/Maintainer .��j D Phone Permitting Authority off' ��0140-- �/� Phone ���� ��� LJb Permit# ZQ 1'1I —.-Mo Date Inspected Keep this Management Plan with your Septic System Owner's Guide. The Septic System Owner's Guide includes a folder designed to hold maintenance records including pumping, inspection and evaluation reports. Ask your septic professional to also: • Attach permit information,designer drawings and as-builts 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,call 1-800-876-8636 or go to hap:Hshop.extension.umn.edu/ http://septic.umn.edu Version 11/03/2010 UNIVERSITY Septic System Management Plan OF MINNESOTA for Above Grade Systems Your Septic System '' ,,' mved-pipe medw ❑ Manip;c r Mspaoon as iow,fin u` -- ,iiltlfibdsglf6tUidFk - Septic System Specifics System is subject to operating permit* System Type:QI�II QIII©IV*Q V* F-1 System uses UV disinfection unit* (Based on MN Rules Chapter 7080.2200—2400) Type of advanced treatment unit *Additional Management Plan required Dwelling Type Well Construction Number of bedrooms: 5 Well depth(ft): 7 System capacity/design flow(gpd): 750 Cased well Casing depth: Anticipated average daily flow(gpd): 750 Other(specify): Comments Distance from septic(ft): Business? What type? Is the well on the design drawing?OYj N Septic Tank One tank Tank volume: gallons Pump Tank 1300 gallons Does tank have two compartments?OY ON Effluent Pump make/model: 65 7 Two tanks Tank volume: 1300 gallons Pump capacity —4/- GPM ❑ Tank is constructed of Co-7c,.,,A? TDH i-6- Feet of head Effluent Screen type: ❑ Alarm location ti o45 , Soil Treatment Area(STA) Mound/At-Grade area(width x length): 10 ft x 63 ft Cleanouts or inspection ports Rock bed size(width x length):43 ft x 89 ft Surface water diversions Location of additional STA: on plan Additional STA not available -2 - UNIVERSITY Septic System Management Plan OF MINNESOTA for Above Grade Systems Homeowner Management Tasks These operation and maintenance activities are your responsibility. Use the chart on page 6 to track your activities. Identify the service intervals recommended by your system designer and your local government. The tank assessment for your system will be the shortest interval of these three intervals. Your pumper/maintainer will determine if your tank needs to be pumped. System Designer: check every never months Local Government: check every 36 months My tank needs to be checked State Requirement. check every 36 months every 24 months Seasonally or several times per year • Leaks. Check(listen,look)for leaks in toilets and dripping faucets. Repair leaks promptly. • Surfacing sewage. 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,call your service professional. Untreated sewage may make humans and animals sick. • Alarms. Alarms signal when there is a problem; contact your maintainer any time the alarm signals. • Lint filter. If you have a lint filter, check for lint buildup and clean when necessary. Consider adding one after washing machine. • Effluent screen. If you do not have one, consider having one added the next time the tank is cleaned. Annually • Water usage rate. A water meter 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.Fix 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. • Review your water usage rate. Review the Water Use Appliance chart on Page 5. Discuss any major changes with your pumper/maintainer. During each visit by a pumper/maintainer • Ask if your pumper/maintainer is licensed in Minnesota. • Make sure that your pumper/maintainer services the tank through the manhole.(NOT though a 4" or 6"diameter inspection port.) • Ask your pumper/maintainer to accomplish the tasks listed on the Professional Tasks on Page 4. -3 - Septic System Management Plan UNIVERSITY for Above Grade Systems OF MINNESOTA Professional Management Tasks These are the operation and maintenance activities that a pumper/maintainer performs to help ensure long-term performance of your system. Professionals should refer to the O/M Manual for detailed checklists for tanks,pumps, alarms and other components. Call 800-322-8642 for more details. • Written record provided to homeowner after each visit. 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 drainfield.) • Inspection pipes.Replace damaged 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 alarm works. • Drainback. Check to make sure it is operating properly. • Event counter or run time. Check to see if there is an event counter or run time log for the pump. If there is one, calculate the water usage rate and compare to the anticipated average daily flow listed on Page 2. Soil Treatment Area • Inspection pipes.Check to make sure they are properly capped.Replace caps that are damaged. • Surfacing of effluent. Check for surfaced effluent or other signs of problems. • Lateral flushing. Check lateral distribution;if cleanouts exist,flush and clean as needed. • Ponding. Check for ponding. Excessive ponding in at-grade and mound beds indicates problems. All other components—inspect as listed here: -4- Septic System Management Plan ._ UNIVERSITY for Above Grade Systems OF MINNESOTA 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. Garbage disposal • Adds solids to the tank. . Minimize garbage disposal use.Compost instead. • Finely-ground solids may 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 a liquid or easily biodegradable detergents. Washing machine prevent solids from settling out in • Install a ling filter after the washer and an effluent the tank.Unsettled solids can exit screen on your tank. the tank and enter the soil treatment • Wash only full loads. area. • Limit use of bleach-based detergents. • Think even—spread your laundry loads throughout the week. • The rapid speed of water entering . Install an effluent screen in the septic tank to 2nd floor laundry the tank may reduce performance. prevent the release of excessive solids to the soil treatment area. . Be sure that you have adequate tank capacity. • 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". our Scrape dishes an They have a garbage disposal inside. p Y yways to keep undigested 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 Large bathtub overload your system. same time.For example,don't wash clothes and (whirlpool) • Heavy use of bath oils and soaps can take a 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 into a sump pump or directly out furnace during cold weather. of the house.Do not route furnace recharge to your septic system. • Salt in recharge water may affect . These sources produce water that is not sewage Water softener system performance. and should not go into your septic system. Iron filter . Recharge water may hydraulically . Reroute water from these sources to another Reverse osmosis overload the system. outlet,such as a dry well,draintile or old drainfield. • Water from these sources will likely • When replacing consider using a demand-based Surface drainage overload the system. recharge vs.a time-based recharge. Footing drains . Check valves to ensure proper operation;have unit serviced per manufacturer directions -$ - UNIVERSITY Septic System Management Plan for Above Grade Systems OF MINNESOTA k4sm Maintenance Log Track maintenance activities here for easy 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: if owner-maintained Check annually: Water usage rate(monitor frequency_) Caps:inspect,replace if needed Water use appliances—review use Other: Notes: Mitigation/corrective action plan: 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# 1 255 Permitting Authority: c F0,0zM,%1 1G --*= I-A 02010 Regents of the University,;Ofm�i ta. All ng t reserved. University of Minnesota is an equal opportunity educator and employer. This material is available in altere foupon request. Contact the Water Resources Center,612-624-9282. The Onsite Sewage Treatment Program is delivered ye Univers ty of Minnesota Extension Service and the University of Minnesota Water Resources Center. - 6- M ; N a /'t Joseph Olson D.B.A. Rusty Olson's--Soil and Percolation Testing Joseph J. Olson--MPCA License #810 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 fax(763) 498-8290 January 17,2013 Q'RONQ Pillar Homes CO 3955 Watertown Road Orono,Hennepin County This on-site Sewage Treatment System is partially designed for a Type 1,five-bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. Once the house size,location and septic primary and future sites are chosen this design can be completed. The seasonally saturated soils were located at 12"-16"(mottled soil).Due to seasonally saturated soils,a pressurized Mound System will need to be installed to treat septic effluent.The bottom of the treatment area must be located at least 3'above the saturated soils. The soils at a depth of 12"have a percolation rate averaging 12.6MP1. Due to limited,space on the lot.Site A and Site B are combined.The absorption areas do not overlap. All tanks need to be insulated if there is less than two feet of cover over the top of the tanks.A filter needs to be installed on the second tank.Clean outs must be installed on the end of the laterals for maintenance. A 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 a light and sound device;this is in case of a pump failure. Use 7/32 inch perforations on the laterals Keep all heavy equipment off of the proposed treatment areas before and after construction.The C treatment area must be fenced off before construction begins.This Design is not valid&the System � will need to be relocated if failure to protect the areas proposed for the On-Site Sewage Treatment .�, systems occurs. O n Nothing other than gray water,(laundry,showers etc.)Human water and toilet tissue should be �rd� disposed of into the seotic tanks.Garbage disposals are not recommended Additives must not be used:they may cause harmful damage to your septic system It is recommended that you pump the tanks every two years. S., cerely, �JOlson C"OF ORONO SEPTIC PE T Irl REV>JkEW INSPECTO DATE — ERMIT NO.,,,,,_,,�,,, El APPROVED AS SUBMITTED APPROVED WITH CORRECTIONS AS NOTED ORONO CO NOT APPROVED-CORRECT& RESUItV11T PY These comments are Im your information. All work shall he clone I. full compliance with all applicable septic and coning code. Requirements including items not specilically noted in this rc\iew. KEEP THIS PLAN SET ON SH E AT AL L.l 0,11..5 I I 7 L+n r2 \ In Ilk • Tm Yoi' �G iR-vN i 4 G Scale 'o 4 ; \ �Pctcolatioo Tell ms Soil Boring ®Bench Mazk � I .Chock all undagrotutd utilitics i ut%-Apropcjly of:P I 1 L n�2 �` J W n (�$, t�, Co✓ ` Dalcl_/j2i13 KI(763)498-8779 musty Olson's soil and peroolation testing fh signal Minnesota PoOSTP Design Summary Worksheet UNIVERSITY v3. ttQn Control Agency OF MINNESOTA Property Owner/Client: Pillar Homes Project ID: v 11 0 22 Site Address: 3955 Watertown Road, Orono, Hennepin County (site B) 1. AVERAGE DESIGN FLOW: A. Design Flow: 750 Gallons Per Day(GPD) Note: The estimated design flow is considered a peak flow rate including a safety factor.For long term performance,the average daily flow is recommended to he< B. Septic Tank capacity: 2250 Gattons60%of this value. C. Number of Septic Tanks or Compartments: I Z Effluent Screen&Alarm? No Type of Soil Treatnnit and Dispersal Area` Type of Disbibutipnx Q Trenches Q Bed QQ Mound Q At-Grade Q Gravity Distribution Q Pressure Distribution-Level Q pressure Distribution-Unlevel Q Drip Distrib. Q Holding Tank Q 01h.= Selection Required Benchmark Elev= 1003.6 ft System Type Benchmark Location: top Of iron 71 Type I E7,,Type II L1 Type III [ Type IV Type V Type of Distribution Media: Rock D. Pump Tank 1 Capacity: (Gallons Pump Tank 2 Capacity: =Gallons 2. SITE EVALUATION: A. Depth to Limiting Layer: 14 inches 1.2 ft Elevation 8 Location of Limiting Layer: 9$7 ft B. Measured Percent Land Slope: 4.0 % 0.0 Location: Shoulder C. Soil Texture: Loam Perc Rate: 12.6 MPI D. Soil Hydraulic Loading Rate: 0.60 GPD/ft2 E.Contour Loading Rate 12.0 Gal/ft 3. DESIGN SUMMARY Trench Design Summary Dispersal Area ft2 Sidewall Depth in Trench Width in Total Lineal Feet ��JJ�ft Number of Trenches Maximum Trench Depth in Designer's Max Trench Depth in Bed Design Summary Absorption Area ft, Media Below Pipe �in Bed Length ft Bed Width [�ft Maximum Bed Depth E=in Designers Max Bed Depth =in Mound Design Summary Absorption Area 625 ft2 Bed Length 63 ft Bed Width 10.0 ft Absorption Width E 20.0 ft Clean Sand Lift 1.8 ft Berm Width (slope 0-1%) �ft Upslope Berm Width 13.0 ft Downslope Berm Width 20.0 ft Endslope Berm Width 13.0 ft Total System Length $9 ft Total System Width 43 ft At-Grade Design Summary Absorption Bed Width C�ft Absorption Bed Length �ft System Height ft Absorption Bed Area ft2 Upslope Berm Width ft Downslope Berm Width it Endslope Berm Width 11�it System Length ft System Width =ft OSTP Design Summary Worksheet UNIVERSITY r~'. Minnesota Pollution y i Control Agency OF MINNESOTA _:_, Pressure Distribution Summary No.of Perforated Laterals Perforation Spacing C�ft Perforation Diameter in Lateral Diameter in Supply Pipe Diameter in Minimum Dose Volume Row Rate E:==GPM Total Head E=ft Maximum Dose Volume D87.5 Holding Tanks Only Number of Holding Tanks Total Volume of Holding Tanks gallons High Level Alarm? 4. Additional Info for Type IV/Pretreatment Design Type of Pretreatment Unit Being Installed: Organic Loading to Pretreatment Unit =Design Flow X Estimated BOD in mg/L in the effluent X 8.35 1,000,000 �gpd X mg/L X 8.35 a 1,000,000= lbs BOD/day Calculate System Organic Loading: lbs. BOD/day=Bottom Area =lbs/day/ftz lbs/day s E:7--Iftz= [=lbs/day/ftz Comments/Special Design Considerations: I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Joseph J Olson F _ 810 01/17/13 (Designer) i (Signature) (License lt) (Date) OSTP Mound Design Worksheet UNIVERSITY Minnesota Pollution Control Agency >1% / Slope OF MINNESOTA 1• SYSTEM SIZING: Project ID: v 11.09.22 A. Design Flow(Flow rt Soil- 1.A): 750 GPD i TABLE IXa B. Soil Loading Rate(Flow ft Soil-3.C): 0.60 GPD/ft2 LOADING RATES FOR DETERMINING BOTTOM ABSORPTION AREA AND ABSORPTION RATIOS USING PERCOLATION TESTS C.Depth to Limiting Condition: 1.2 ft Treatment Levet C Treatment Level A,A-2,B, D. Percent Land Slope: 4.0 % Percolation Rate Absorption Mound Absorption Moura (MPI) Are Raoading Absorption Area aeding AbsorptionE. Design Media Loading Rate: 1.2 GPD/ft2 (stain,) Ratio (gpdrft,) Ratio F.Mound Absorption Ratio(Table IXa): G.Design Contour Loading Rote: 12.0 GPD/ft !a 1 to 5 1.2 1 1.6 1 �0.1 to 5{tine sand 0 6 2 1 1.6 Table I aril loe tine santl MOUND CONTOUR LOADING RATES: !8 to 15 0.78 1.5 1 1 6 awasurod Toxturo-darivod Contoui 16 to 30 0.6 2 0.78 2 Porc Rate OR -nound absorption ratio Loading 131 to a 0.5 2.4 0.78 2 Rata: -60mpi 1.0. 1.3.2.0.2.4.2.6 c12 46 to 60 0.45 2.6 0.6 2.6 :61 to 120 _ 5 0.3 5.3 St-IZO mpi UR 5.0 c12 10 120 n)pi' 7 0' -5' 'Systems with these values are not Type I systems. Contour Loading Rate(linear loading rate)is a recommended value. 2. DISPERSAL MEDIA SIZING A. Calculate Required Dispersal Bed Area:Design Flow (1.A),Design Media Loading Rate (1.E)-W, If a larger dispersal media area 750 GPD= 1.20 GPD/ft' = 625 ft is desired,enter size: �ft2 B. Calculate Dispersal Bed Width:Contour Loading Rate (1.G)=Design Media Loading Rate (1.E)=Bed Width 12.0 ft _ 1.2 gpd/ft2 = 10 ft C. Calculate Dispersal Bed Length: Dispersal Bed Area (2.A)4 Bed Width (2.B)=Bed Length 625 ft2 - 10 it = 63 ft D. Select Dispersal Media E. If using a registered product,enter the Component Length: I 12 = ft F. If using a registered product,enter the Component Width: 1 lin a 12 = ft G. Number of Components per Row =Bed Length (2.C)divided by Component Length (4.J)(Round up) ft : ft= [:::=components/raw H. Number of Rows =Bed Width (2.B)divided by Component Width (4.K)(Round up) Note:CLR of 10.3 Adjust Contour Loading Rate on Design Summary page until this number is a whole number gal/ft results in 9 footwide bed. ft a it= -J rows 1, Total Number of Components -Number of Components per Row X Number of Rows X _ L=components 3. ABSORPTION AREA SIZING Note:Mound setbacks are measured from the Absorption Area. A. Calculate Absorption Width:Bed Width (2.B)X Mound Absorption Ratio (1.17)=Absorption Width 10.0 ft x 2.0 = 20.0 ft B. For slopes>1%,the Absorption Width is measured downhill from the upslope edge of the Bed. Calculate Downslope Absorption Width:Absorption Width (3.A)-Bed Width (2.6)=ft 20.0 ft - 10.0 ft = 00.07 ft 4. MOUND SIZING A. Calculate Clean Sand Lift: 3 feet minus Depth to Limiting Condition (1.C)=Clean Sand Lift (1 ft minimum) 3.0 ft - 1.2 ft = 1.8 ft Design Sand Lift(optional): 1.8 B. Calculate Upslope Height:Clean Sand Lift (4.A)+media depth (1 ft.)+cover (1 ft.)=Upslope Height 1.8 ft 1.0 ft 1.0 ft= 3.8 ft 0.14:5b[r Multiplier Table Land Slope 7 0 I 1 2 3 4 5 5 7 1 8 1 9 1 10 111 11 1 iJ 1 14 1 li f 15 1 17 1 IB 1 19 1 20 1 21 1 22 2T'124 1 25 ' Up310Fe 3:1 mowc 1.412 51 2.541'.46 2.41 2.3612.31j1.26 2.i1 t.:7�2.'311i.09 LG5 1.03 LK I I.i? I.i5 Lia Li! 1.19 1,87 1.85 84rfl Ra;ii- 14.1 J.00 3.85 3.70f 3,57 3.J5 3.3J-3.23;3.12 3.03,1.44 2.56 2.18 2,10 1.52 2.55 2,46 1.41 2.35 2.29 1.23 1.18 LU 2.05 2.03 1.98 L'r3 Land Slope a 0 I 2 3 d 5 1 6 7 8 9 j ul I l l 12 13 14 15 16 11 1 l8 19 20 21 21 23 24 1 25 (0lmslc10e 113:1 7.IX 7.C9 7.?, 3.3. 3.41 3.57 3.66 7.50 3.;5'4.11 4.29 4.:,? 4.69-,95!5.24 5.55 S.aB 6.2= 6.67 ?.04 7.A 7.il 3.42 8.93 9.46 1002 Bern Rano i41 J.00..174.35 4.54 4:16 5.00 5.26 5.56 5.8a 6.25 6.67 7.14 7.69 8.19,8.92 9.57 10,24110,94111:67112.42 :3.13 !3.9911412115,67 ;6.5411T,14 C Select Upslope Berm Multiplier (based on land slope): 3.33 (figure D-34) D. Calculate Upslope Berm Width:Multiplier (4.C)X Upslope Mound Height (4.6)=Upslope Berm Width 3.33 ft x 3.8 ft = 13.0�ft E. Calculate Drop in Elevation Under Bed:Bed Width (2.13) X Land Slope (1.D):100=Drop (ft) 10.0 ft X 4.0 % loo = C 0.40 ft F. Calculate Downslope Mound Height:Upslope Height (4.8)+Drop in Elevation (4.E)=Downslope Hei,;ht 3.8 ft + 0.40 ft = 4.2 ft G Select Downslope Berm Multiplier (based on land slope): 4.76 (figure D-34) H. Calculate Downslope Berm Width:Multiplier (4.G)X Downslope Height (4.F)-Downslope Berm Width 4.76 x 4.2 ft = F 20.0 -]ft I. Calculate Minimum Berm to Cover Absorption Area:Downslope Absorption Width (3.B or 3.C)+4 ft. =ft 10.0 ft + �� ft 14.0 7 f J. Design Downslope Berm =greater of 4H and 41: 20.0 ft K. Select Endslope Berm Multiplier: 3.00 (usually 3.0 or 4.0) L. Calculate Endslope Berm (4.K)X Downslope Mound Height (4.17)=Endslope Berm Width 3.00 ft x 4.2 ft = 13.0 ft M.Calculate Mound Width: Upslope Berm Width(4.D)+Bed Width (2.6)+Downslope Berm Width (4.J)=z ft 13.0 ft + 10.0 ft + 20.0 ft = 43.0 ft N. Calculate Mound Length:Endslope Berm Width (4.1.)+Bed Length (2.C)+Endslope Berm Width (4.L) =ft 13.0 ft + 63.0 ft + 13.0 ft = 89.0 ft Comments- 5. MOUND DIMENSIONS M ----------------------------- Upslope (4.D) --13.0 --------- Bed: (2.B x 2.C) � Endslo a (4.L) Dispersal � Endslo (4.L) 13.0 10x 63 c 0 E. �a Downslope (4.J) 20.0 ------------------------------------- —------- Total Mound Length (4.N)..-.. 89.0 4"inspection pipe 18"cover on top Upslo a berm (4.D) Downslope berm (4.J) 20.0 13.0 12"cover on sides (6" topsoil) u Ictean sand lift (4.A) (ft Absor tion Width (3.A) Note: 20.0 For 0 to 1%slopes, Absorption Width is measured from the Bedequally in both directions. For slopes>1%, Absorption Width is measured downhill from the upslope edge of the Bed. OSTP Mound Materials Worksheet UNIVERSITY Minnesota Pollution ;;a• Control Agency OF MINNESOTA •- ' ti-'1..\. Project 11): v 11.09.22 A. Calculate Bed (rock)Volume:Bed Length (2.Cj X Bed Width 2.B)X Depthffg�� 63.0 ft xft X 1.0 = 630.0 ft3 Divide ft'by 27 ft;/yd'to calculate cubicyards: 630,0 ft' 27 = 23.3 yd Add 20%for constructability: 23.3 yd'X 1.2 = 28.0 yd' B. Calculate Clean Sand Volume: Volume Under Rock bed:Average Sand Depth x Media Width x Media Length =cubic feet 2.0 ft x 10.0 ft x63.0 Ift = 1281.0 ft' For a Mound on a slope from 0-1% Volume from Length=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Length) ft -1) X I � X �-�ft Volume from Width=((Upslope Mound Height-1)X Absorption Width Beyond Bed X Media Bed Width) ft 1) X E_ I X ft = �� Total Clean Sand Volume: Volume from Length+Volume from Width+Volume Under Media ft' + ft' + ft3 For a Mound on a slope greater than 1% Upslope Volume:((Upslope Mound Height - 1)x 3 x Bed Length)+2=cubic feet it -1) X 3.0 ft X 63.0 )+2= 267.8 ft' Downslope Volume:((Downslope Height- 1)x Downslope Absorption Width x Media Length)+2=cubic feet ft-1) x 10.0 ft x 63.0 )+2= 1018.5 ft' Endslope Volume:(Downslope Mound Height-1)x 3 x Media Width =cubic feet ( 4.2 ft-I ) X 3.0 ft X 10.0 ft = 97.0 ft' Total Clean Sand Volume:Upslope Volume +Downslope Volume +Endslope Volume +Volume Under Media 267.8 ft' + 1018.5 ft' + 97.0 ft' + 1281.0 ft'= 2664.3 ft' Divide ft'by 27 ft/yd 3 to calculate cubic yards: 2664.3 ft' 27 = 98.7 yd' Add 20%for constructability: 98.7 yd'X 1.2 = 118.4 yd' C. Calculate Sandy Berm Volume: Total Berm Volume(approx):((Avg.Mound Height-0.5 ft topsoil)x Mound Width x Mound Length)+2=cubic feet ( 4.0 0.5 )ft x 43.0 ft x 89.0 )+2= 6761.0 ft' Total Mound Volume-Clean Sand volume-Rock Volume=cubic feet 6761.0 ft' 2664.3 ft' - 630.0 ft' 3466.8 ft' Divide ft'by 27 ft'/yd'to calculate cubic yards: 3466.8 ft' + 27 - 12$,4 yd' Add 20%for constructability: 128.4 yd' x 1.2 = 154.1 yd D. Calculate Topsoil Material Volume:Total Mound Width X Total Mound Length X.5 ft 43.0 ft X 89.0 ft X 0.5 ft = 1913.5 ft3 Divide ft3 by 27 ft'/yd'to calculate cubic yards: 1913.5 ft' + 27 70.9 yd' Add 20%for constructability: 70.9 = yd' x 1.2 85.0 yd3 OSTP Pressure Distribution R,a, Minnesota Pollution UNIVERSITY Control Agency Design Worksheet OF MINNESOTA ;:,.,a Project ID: v 11.09.22 1. Select Number of Perforated Laterals in system/zone: --- (2 feet is minimum and 3 feet is maximum spacing) 2. Select Perforation Spacing: 3.0 ft ��� "' r�r F- iF9 / ''' _ -�_ - - J.,.r�um/:'1n rluratirnrt cy. of rock 12- 3. Select Perforation Diameter Size 7/32 in _ 64. Length of Laterals =Media Bed Length-2 Feet. nrfur.t;nh nt1V..rfpra,;u„'p-im'.2'to 63 - 2ft = 61 ft Perforation can not be closer then 1 foot from edge. 5• Determine the Number of Perforation Spaces. Divide the Length of Laterals (Line 4)by the Perforation Spacing (Line 2)and round down to the nearest whole number. Number of Perforation Spaces = 61 ft ft = 20 Spaces 6. Number of Perforatlons per Lateral is equal to 1.0 plus the Number of Perforation Spaces (Line 5). Perforations Per Lateral = 20 Spaces + 1 = E=Perfs. Per Lateral Check table below to verify the number of perforations per lateral guarantees less than a 10%discharge variation. The value is double if the a center manifold is used. Kaxirum,Number of Pe}-foratians Per Lateral to Guarantee:ii:►yi Discharge Variat0n inch PE-tora7:0ns 7132 Inn Perforation Pe-fcration Spacing(Feet) Pip*�ameter(fnchesl Perforation Spacing Pipe D-arneter finches) ' 1t tl 2 3 (Feet! 2 3 2 i0 13 18 30 60 2 1i 16 N 34 68 2': 8 12 16 28 54 2s 10 14 20 32 64 3 8 12 16 25 52 3 9 14 19 30 60 3:`16 Inch Per oraticns I T Inch Pe-terat?ons Pipe Diameter(Inches) Perforation 5 acipe Dng Pi Gerfara�an Spacng Sfwt) P arneter(inches) 1 11 1;t 2s IFeet) 1 i? 9F. 2 3 2 12 18 26 46 87 2 21 33 44 74 149 21t 12 i7 24 40 80 2f 20 30 41 69 135 3 12 16 22 37 75 3 20 29 38 64 128 7• Total Number of Perforations equals the Number of Perforations per Lateral (Line 6)multiplied by the Number of Perforated Laterals (Line 1). 21 Perf. Per Lateral X C _1 Number of Perf. Laterals = 63 Total Number of Perf. 8. Calculate the Square Feet per Perforation. Recommended value is 4-10 ft 2 per perforation. 'w~eh Offch-V f0PM) Does not apply to At-Grades Perf-tton oto t9r N4.O B.1 Bed Area = Bed Width(ft)X Bed Lergth(ft) 0.180.22 0.69 09 ft xft = ftz 0.260.29 0.89 117 3.0 0.32 Square Foot per Perforation =Bed Area divided by the Total Number of Perforations (Line 7). 0.77 01.13 1.1.47 5.01 0.41 0.97 1.26 1.65 630 ftZ - 63 perforations c 10.0 ft2lperforations ;m"tirnth'/16in`hta141Kh Dwellings with t/a imh Serf-ti- 9. Select Minimum Average Bead: 1.0 ft 2 feet Other rAabiishtnents and LASTS with 3/16 inch to 1/4 inch p"'4110M 5 feet Other tablish-ts d MSTS wtth 1/8 mh perforationsHan 10. Select Perforation Discharge (GPM)based on Table IIi: 0.56 GPM per Perforation 11. Determine required Flow Rate by multiplying the Total Number of Perforations (Line 7)by the Perforation Discharge (Line 10). OSTP Pressure Distribution UNIVERSITY Minnesota Pollution Design Worksheet �' -�•��' Control Agency OF MINNESOTA -.• N. GPM 17 63 Perforations X 0.56 GPM per Perforation = 36 OSTP Pressure Distribution Aa UNIVERMinnesota Pollution SITY Control Agency esn Worksheet OF MINNESOT x "'- 12. Select Type of Manifold Connection (End or Center): End center 13. Select Lateral Diameter: 2.00 in Table II Volume of Liquid in 14. Volume of Liquid Per Foot of Distribution Piping: 0.170 Gallons/ft pipe 15. Volume of Distribution Piping = Pipe Liquid Diameter Per Foot _[Number of Perforated Laterals (Line 1)X Length of Laterals (Line 4)X (inches) (Gallons) (Volume of Liquid Per Foot of Distribution Piping(Line 14)] 1 0.045 X 61 ft X 0.170 gal/ft = 31.1 Gallons 1.25 0.078 1.5 0.110 16. Minimum Dose=Volume of Distribution Piping(Line 15)X 4 2 0.170 EJ 0 31.1 gals X 4 = 1 24.4 Gallons 4 0.3 0.3838 661 marno pipe, _-Cleanouts -------- - I pipe from pump Manifold pipe, lean outs ---- Alternate location of pipe from pump alternate location of ae from purrij Pipe from pump Comments/Special Design Considerations: Loos of Soil Borings License#810 Location or Project: 3955 Watertown Road Borings made by: Rusty Olson's Soil and Perc testing 1/17/2013 Classification System: AASHO ; USDS•USDSSCS X ; Unified ; Other Auger used (check two): Hand_X_, or Power , Flight, Bucket or Probe X Boring Number-1—Surface elevation_987.0_ Mottled Soil at-1.3—feet 0"-10" Dark brown loam 10yr3/2 H2O present at X 10"-16" Brown loam 10yr4/3 16"-24"Rusty brown clay loam 10yr5/3 Boring Number-2—Surface elevation_987.0_ Mottled Soil at 1-3 feet 0"-10" Dark brown loam 10yr3/2 H2O present at X 10"-16" Brown loam 10yr4/3 16"-24" Rusty brown clay loam 10yr5/3 Boring Number_3_Surface Elevation_988.2 Mottled Soil at 1.3 feet 0"-10" Dark brown loam 10yr3/2 H2O present at—X- 10"-16" Brown loam 10yr4/3 16"-24" Rusty brown clay loam 10yr4/3 Boring Number_4_ Surface elevation_988.2_ Mottled Soil at_1.2_feet 0"-10" Dark brown loam 10yr3/2 H2O present at—X- 10"-14" Brown loam 10yr4/3 14"-24" Rusty brown clay loam 10yr5/3 Boring Number_5_Surface elevation-986.2— Mottled Soil at 1.0 feet 0"-12" Dark brown loam 10yr3/2 H2O present at—X- 12"-18" Rusty brown loam 10yr4/3 18"-30" Rusty brown clay loam 10yr5/3 Boring Number—6_Surface elevation-988.2— Mottled Soil at 1.2 feet 0"-10" Dark brown loam 10yr3/2 H2O present at X_ 10"-14" Brown loam 10yr4/3 14"-24" Rusty brown clay loam 10yr5/3 Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 11:15 A.M. On 1/17/13 Location: 3955 Watertown Road Hole number: 1 Date hole was prepared: 1/16/13 Depth of hole bottom_12"_inches, Diameter of hole_6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-10" Dark Brown Loam 10yr4/2 10%12" Brown loam 10yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1/16/13 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 11:36 12:06 6" 3.3 9.1 12:13 12:43 6" 3.2 9.4 12:44 1:14 6" 3.1 9.7 AVERAGE PERO. RATE 9.4 MPI Percolation Test Data Sheet Li c.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 11:15 A.M. On 1/17/13 Location: 3955 Watertown Road Hole number: 2 Date hole was prepared: 1/16/13 Depth of hole bottom_12"_inches, Diameter of hole 6" inches. Soil data from test hole: _ Depth, inches Soil texture 0-10" Dark Brown Loam 10yr4/2 10"-12" Brown loam 14yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1/16/13 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 11:37 12:07 6" 2.0 15.0 12:12 12:42 6" 1.9 15.8 12:45 1:15 6" 1.9 15.8 AVERAGE PERC. RATE 15.5 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc, starting at 11:15 A.M. On 1/17/13 Location: 3955 Watertown Road Hole number: 3 Date hole was prepared: 1/16/13 Depth of hole bottom_12"_inches, Diameter of hole_6"_inches. Soil data from test hole: Depth, inches Soil texture 0-10" Dark Brown Loam 10yr4/2 10"-12" Brown loam 10yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1/16/13 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 11:38 12:08 6" 1.9 15.8 12:11 12:41 6" 1.9 15.8 12.46 1:16 6" 1.9 15.8 AVERAGE PERC. RATE 15.8 MPI r Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 11:15 A.M_ On 1/17/13 Location: 3955 Watertown Road Hole number: 4 Date hole was prepared: 1/16/13 Depth of hole bottom_12"_inches, Diameter of hole_6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-10" Dark Brown Loam 10yr4/2 10"-12" Brown loam 10yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1/16/13 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 11:39 12:09 6" 3.2 9.4 12:10 12:40 6" 3.1 9.7 12:47 1:17 6" 3.0 10.0 AVERAGE PERC. RATE 9.7 MPI