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HomeMy WebLinkAbout09-24-2018 Septic DesignPercolation tests are no longer required by the city of Orono Soils verification required at bottom of exavation MEMORANDUM September 24, 2018 ftu'6 Investigation & Design - To: Mr. Roger Peitso, Building Official City of Orono, MN From: Paul Brandt PSS Soil Investigation & Design, Inc. Date: September 12, 2018 Subject: 1795 Fox Street, Orono, MN As we discussed, this design is being considered a type 3/4 by the City of Orono and was reviewed under those regulations. The system has three distinct components. They are the tanking, piping to the drainfield and the drainfield design. The tanking and treatment component design appears to be within prescriptive design. This portion of the design meets or exceeds the requirement of the City of Orono Ordinance and the Minnesota Rule 7080 to 7083. The piping component design appears to be within prescriptive design. This portion of the design meets or exceeds the requirement of the City of Orono Ordinance and the Minnesota Rule 7080 to 7083. The drainfield component design as the City of Orono has indicated is considered to be a type (3) three system. As a type 3 system, it is proposed to remove soil and replace it with washed sand. This solution to the problems indicated in the design appear to be workable under the following conditions. First, no equipment can be driven on the surface of the excavation for the drainfield nor can any smearing, compaction or other activities that could seal the bottom or sidewalls of the drainfield excavation occur. Second, the designer or installer must complete two (2) percolation tests within the excavation to determine the appropriate sizing. This is indicated in both the City Ordinance and in Minnesota Rule. Since this is part of the "advanced design", we must be notified to inspect the soils and the percolation testing in the drainfield. With respect to the management plan as stated, it has several gaps in information. This should be completed and submitted by the designer and/or the installer before completion of the installation. With the provision of completion of two pert test and the management plan, this design is approvable by the City of Orono and the permit can therefore be issued by the City of Orono. Thank you for your time. I hereby certify that I am an advanced designer and am qualified to design/review this work in accordance with all applicable ordinances, rules and laws. Paul Brandt, Lic. # 5182; Soil Investigation & Design, Inc. Lic. #3253 II-I"W-1155 SP TESTING INC. Steven B. Schirmers -951 Katydid Lane NE -St. Michael, MN 55376 Cert. No 627 - State License #394 - Phone 763-497-3566 - Fax 763-497-5011 www.sptesting.wastewater(@Comcast net- schirmerswastewater.com October 31, 2017 Thomas Hamilton Lot 2, Block 1 Fox Hill Orono, MN This site had 2 existing on-site sewage treatment sites identified on the original plat. These sites have been damaged (disturbed) from tree removal. 40 soil probings were completed in the original septic sites finding 50% to 75% compacted soil from equipment travel. This site has very limited space for placing a new system due to disturbed soil. A standard system under Minnesota Chapter 7080 rules cannot be designed. The proposal is to install a Type 111, System under Minnesota Chapter 7080.0179 rules for a Type 1, 5 bedroom home. The clay loam soil will be removed to the loam soil to elev. 938.0 to 940.1, then backfilled with washed sand to elev. 945.1 using SB#2 with mottled soil (redox features) at elev. 942.1, then install a pressurized seepage bed. The City of Orono requires a Type 1, system for new construction to be a buildable lot. Type IV systems are not allowed in the City code. This design will require a variance from the City of Orono to be buildable. A Class 1, Multi -Flo Aerobic Wastewater Treatment system which is classified as standard under Minnesota Chapter 7080 rules will be used or a unit which has positive filtration and an alarm equivalent to a Multi -Flo Unit. The highly treated, filtered effluent produced by the Multi -Flo is over 95% free of the normal sewage contaminants that cause the progressive failure of conventional systems. The unit will be a 750 gallday. A trash trap is installed in front of the Multi -Flo Unit. The unit requires to be serviced 2 times a year which will be done by Schirmers Wastewater Treatment Systems, Inc. A 2 year parts & service warranty comes with the cost of the unit. After that time, the homeowner is required to carry a service contract at a cost of $225.00 a year (2017 price). A report is sent to the homeowner, City, MPCA & Multi -Flo yearly. 2 inspection pipes must be installed, 1 to the bottom of the sand fill & 1 to the bottom of the rock bed. All property line will need to be located prior to installation. The first tank will be a 1500 gallon dual chamber tanks reversed using the 500 gallon side as the trash trap & the 1000 gallon side as a dosing chamber (pump #1) which will dose 15.6 gallon every 30 minutes with a timer to the 750 gallon Multi -Flo Unit. The effluent will flow gravity from the Multi -Flo to a new 1500 gallon pumping chamber ( pump 92) which will pressurized the seepage bed. The power supply & switches must be located outside the manhole & pumping chamber in a weather proof enclosure. A warning device must be installed with a light & sound device. This is in case of a pump failure. Monitoring of the drainfield, is required immediately after the system is installed. 2097 Service contract for Multi -Flo is $225.00, monitoring drainfield 1 x a year is $50.00 when we service the Multi -Flo. Price subject to change. An operating permit is required with the County at all times. If the tanks have less than 2' of cover, the lids, risers & maintenance hole covers must be insulated to a value of R10. Cleanouts for each lateral with a sleeve must be insulated & be accessible from finished grade in an irrigation box with a ball valve. A water meter or event counter must be installed to monitor daily water use. The homeowner is responsible for the water meter readings. The mitigation plan is if hydraulic overloading would occur, a timer could be installed to reduce the amount of effluent pumped to the system and also by using the 1500 gallon pumping chamber allows the effluent to be stored during peak use and pumped to the system during low water use periods. The second would be to install holding tanks. All neighboring wells are located greater than 100' away from the proposed treatment area. Keep all heavy equipment off of the proposed treatment area before and after construction. The treatment area should be marked off before construction. This design is not valid & the system will need to be relocated if failure to protect the sites for new on-site sewage systems. MANAGEMENT PLAN: The tanks need to be maintained at a minimum of 1 time every 2 years, check with you pumper to set up a schedule. System inspected for areas by owner & or Inspector as determined by the local unit of Government. Any other requirements as determined by the local unit of Government. With proper installation & maintenance, this system should have no problem in treating septic effluent effectively. Nothing other than human waste, toilet tissue, laundry, showers, water softners etc. should be disposed of into the system. Recommend iron filters be diverted out of the system. Garbage disposals are not recommended. Excessive amounts of soaps, antibacterial soaps, cleaning agents, shower cleaners used every shower & chlorine agents may kill the bacteria needed to treat septic effluent. Additives are not recommended. Recommend laundering be limited to 3 to 4 loads per day. The Multi - Flo Unit will need to be pumped when the settable solids reach 40%. Schirmers Wastewater will meet the pumper & clean out the Multi -Flo at the same time. There will not be a charge from Schirmers Wastewater as long as pumping is only needed 1 time every 3 years. The pumping charges from a licensed pumper are you responsibility. Thank Y u Steven B. Schirmers This Djsn resuire signature from an Advanced Designer ZM1 Bernie Miller Lot 2, Block 1, Fox Bill Orono date SCHIRMERS WASTEWATER TREATMENT SYSTEMS,INC. Steven B. Schirmers - 951 Katydid Lane NE • St. Michael, MN 55376 Cert.No.627 • (763) 497-3566 • FAX (763) 497-5011 State License #395 www.schirmerswastewater.com - sptesting.wastewater@comcast.net The multi -Flo Aerobic Wastewater Treatment System is the finest mechanical sewage treatment system available today. It discharges clear, odorless, and the most environmentally safe effluent possible. We have prepared this guideline to help you to understand how to keep Multi -Flo operating at its economical best. The Multi -Flo System has Dacron filters inside and an electric motor which pumps air through the system and also keeps the sewage in motion. This is done by means of a small fan or impeller at the bottom of the motor. The leading cause of motor failure and filter clogging is letting non -biodegradable items be flushed down your drain. Examples of such are: Kleenex Disposable diapers Plastic rubber products Coffee grounds Sanitary napkins,tampons Cigarette butts Excessive amounts of: soaps, bubble baths & gels There are also other chemicals that can kill the good bacteria that the Mufti -Flo generates to process your sewage. You should not: Use chlorine bleach or liquid fabric softner Wash any paint brushes down the drain Pour paint thinners, cleaners etc. down the drain Put old medicine down the drain Any type of grease down the drain (wash out containers -recycling) Use drain cleaners Use continuous toilet bowl cleaners (hang in the tank) Use anti -bacterial soaps - body bath soaps Put carpet shampoo down the drain Shower cleaners used every shower -�.i'l •' i •� • r r • � Regulatory agencies require all residential Multi -Flo Systems to be serviced at least 2 timers per year for the proper up -keep of the system and to meet code requirements. Frequency of service on commercial installations can best be determined by a close study of usage and effluent content. Soil Observation Log www.SepticResource.com vers 12.4 Owner Information Property Owner / project: Thomas Hamilton Date 10/28/2017 Property Address / PID: Lot2, Block 1, Fox Hill, Orono Soil Survey Information ❑ refer to attached soil survey Parent mates: Q Till ❑ outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: Summit ❑ Shoulder ❑ Side slope ❑Toe slope soil survey map units: slope % direction- downhill Soil Log #1 ❑ Boring ❑ Pit Elevation 943.5 Depth to SHWT 26" Depth (in) Texture fragment Qio matrix color redox color consistence grade shape 0- 18 loam IOYR3/2-10YR5/2 Friable Weak Granular 18-26 clay loam 10YR 5/3 Firm Moderate Prismatic 26-42 clay loam I OYR5/3-1 OYR6/3 l OYR 6/8, l OYR 7/1 Firm Moderate Prismatic 42-66 Fine sandy silty loam lOYR 6/2 10YR 6/8, lOYR 7/1 Friable Weak Prismatic 66-78 loain IOYR 6/3 10YR 6/8, IOYR 7/1 Friable Weak Prismatic Comments: Lott, Block 1, Fox Hill, Orono Soil Log #2 Q Boring 0 pit Elevation 944.4 Depth to SHWT 28° Depth (in) Texture fragment % matrix color redox color consistence grade shape 0- 12 loam compacted 12- IS loam l OYR 4/3 Friable Weak Granular IS -28 clay loam l OYR 5/3 Firm Moderate Prismatic 28-54 clay loam IOYR 5/3-10YR6/3 Firm Moderate Prismatic 54-72 loam IOYR 6/3 l OYR6/8, IOYR 7/1 Friable Weak Prismatic Lot2, Block 1, Fox Hill, Orono Soil Log #3 ❑ Boring ❑ Pit Elevation 942.3 Depth to SHWT 30" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0- 12 loam IOYR 3/2 Friable Weak Granular 12-30 clay loam I OYR 4/3 Firm Moderate Prismatic 30-34 clay loam l OYR 5/3 IOYR 6/8, IOYR 7/1 Firm Moderate Prismatic 34-54 silty clay loam 10YR 6/3 l OYR 6/8, 1 OYR 7/1 Firm Moderate blocky 54-78 loans IOYR 6/3 Friable Weak Prismatic 1 hereby certify this work was completed in accordance with AN 7080 and any local reqs. Designer Signature Company License # Owner / project: Address / PID: Parent matl's: landscape position: soil survey map units: Soil Observation Log www.SepticResource.com vers 12.4 Owner Information Thomas Hamilton Date 10/28/2017 Lot 2, Block 1, Fox Hill Orono Soil Survey Information ❑ refer to attached soil survey Q Till Q Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock 0 Summit ❑ Shoulder ❑ Side slope ❑ Toe slope EnB slope 4 % direction - Soil Lo- 94 ❑ Boring ❑ Pit Elevation 943.8 Depth to SHWT 32" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 loam compacted 10YR 3/2 12-32 clay loam 10YR 4/3 Firm Moderate Prismatic 32 -44 clay loam 10YR 6/3 10YR 6/8, 10YR 7/1 Firm Moderate Prismatic 44-64 loam I OYR 6/3 10YR 6/8, IOYR 7/1 Friable Weak Blocky 64-78 fine sand <35 1 OYR 6/3 10YR 6/8, IOYR 7/1 Loose single grain Comments: LOT /-, tflOcic 1, l ox Hail Urono Soil Log 95 21 Boring ® Pit Elevation 942.2 Depth to SHWT Depth (in) Texture fragment % matrix color redox color consistence grade shape 0- 12 loam 10Y3/2-10YR 5/3 Friable Weak Granular 12-24 clay loam I OYR 5/3 Firm Moderate Prismatic 24-48 clay loam I OYR 5/3-10YR6/3 IOYR 6/8, IOYR 7/1 Finn Moderate Prismatic 48-54 sandy loam 1 OYR 6/3 10YR6/8, IOYR 7/1 Friable Weak Granular 54-78 loam I OYR 6/4 IOYR6/8, IOYR 7/I Friable Weak Prismatic Lot 2, Block 1, Fox Hill Orono Soil Loi; ##6 Q Boring ❑ Pit Elevation 942 Depth to SHWT 22" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0 - 8 loam 10YR 3/2 Friable Weak Granular 8 - 22 clay loam IOYR 4/3 Finn Moderate Prismatic 22-42 clay loam IOYR 5/3 IOYR 6/8, 1 OYR 7/1 Firm Moderate Prismatic 42-60 silty loam l OYR 6/3 1 OYR 6/8, l OYR 7/1 Friable Moderate Blocky 6--64 loam I OYR 6/3 Friable Weak Prismatic I hereby certify this work was completed in accordance with MN 7080 and any local reqs. Designer Signature Company License # Lot 2, Block 1, Fox Hill Orono ❑ Boring ❑ pit Depth (in) Texture fragment % 64-78 fine sand Soil Log 96 cont'd Elevation Depth to SHWT matrix color redox color consistence 10YR 6/3 10YR 6/8, IOYR 7/1 Loose grade shape Single grain Lot 2, Block 1, Fox Hill Orono Ej Boring El pit EIevation Depth to SHWT Depth (in) Texture fragment % matrix color redox color consistence grade shape <35 t loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive <35 loose loose single gain 35-50 friable weak granular blocky >50 ` firm moderate prismatic platy rigid strong massive loose loose single grain ,<35 ,35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive I hereby certify this work completed in accordance with AN 7080 and any local reqs. -was Designer Signature Company License # 2011purpiecode Multi Flow Et Pressure Bed wunni Cen4inC7venurne n i..,..., a e rn Property Owner: Thomas Hamiltonv v ` Date: 10!21/2017 Site Address: Lot 2,13Ik.1, Fox Hill Orono PID: Comments: digout Ft backfill with sand instructions: = site specific input = = adjust if desired 0 = self -calculated (DO NOT ADJUST) r) =bedroom Type IV Residential System a) 750 GPD design flow (average flow should be C 70% of design flow) PRETREATMENT: (Residential strength to [eve( "A") i) 1500 Gallon Trash trap/pump tank to Multi -flow split -500 gal trash trap - 1000 dose tank c) 750 Gallon Multi -flow unit 30 gpm 10 ft head TREATMENT pump 48 doses per day 15.5 gal /dose (treatment) 10 Ifeet of 2.0 1 inch supply line leads to 2 gallons of drainback volume 17.6 gallons total pump out volume Timed dosing of 35 sec ON (confirm pump rate with drawdown 29,4 min OFF test and adjust as necessary) =inches from bottom of tank to Timer ON float Hi level Alarm to be set at 75 % of tank capacity UV light req'd No DISPERSAL: 0.78 GPD/ft Soil Loading Rate 962 ft (code minimum) 1005 ft (design size /LUG req'd) EE Treatment Level A/B (must match soil boring log) 8s 15.0 ft desired bed width, leads to a67.0 ft bed length (25' maximum) 9) =ft lateral spacing 3.0 ft perforation spacing { maximum 3 for both) end feed manifold connection 10) laterals 65.0 feet long 22.0 perfs / lateral 110 perfs total (1 /2 perf means the 1 st perf starts at the middle feed manifold) ))) 3/1b inch perfs at =feet residual head gives 0.42 gpm flow rate per perforation ( If bed has > l' of cover, increase residual head for cleanout reqs) for this perf size It spacing, ft pipe size on line 14, max perfs/lateral = 22 line #10 must be less > OK 12) F4.0 doses per day (4 minimum) 13) 188 gallons per dose (treatment volume) 1.50 5x 14) 1.50 inch diameter laterals must be used to meet "4x pipe volume" reauirement 2.00 3x 15) 90 feet of =inch supply line 16) leads to F 15 gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 203 gallons TOTAL pump out volume (treatment + drainback) 7) =feet vertical lift from pump to drainfield laterals, leads to a 18) 47 GPM @ 24 feet of head, DISPERSAL Pump requirement ( >50 gpm may require additional 3-6' head allowance for discharge assy) 19) 1500 gal Dose tank (code minimum) 1500 gal Dose tank (design size / LUG req'd) at 29.00 gpi 7.0 inch swing on Demand float, or Timed dosing of4.3 min ON (confirm pump rate with drawdown (to deliver Average flow, 66% of Peak design flow) 1 9 1hrs OFF test and adjust as necessary) 1)Tinches inches of from bottom of tank to "pump OFF" float 2) inches from bottom of tank to "pump ON" float, orP3q2 inches to "timer ON" float if time dosed from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed 862 gallons reserve capacity (after High Level Alarm is activated) SB#2 elev. 942.1 28 inches, or 2.33 ft. to Redox or other limiting condition (This must match the soil boring log) Treatment zone contains=inches 0% soil credit and =inches 50% soil credit =inches, or 1.00 ft. of vertical separation required leads to bottom of rock no more than: elev. 945.1 =inches, or =ft, Below existing grade CRITICAL FOR FUTURE CERTIFICATIONSH! s) 12 inches of rock below the pipe 2 inches of rock to cover the pipe Overall Dimensions: 15.0 ft. wide by E67.01 ft. long Pressure Bed Rock Bed materials: =ft. ft. by 67.0 ft. by 14 inches total, plus 20% gives 53 yd or `1.4= =ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. 'r �✓"��`fi 7iL1,lV 1}.)L� < 10/21/2017 Designer Signature Company License# Date Installer Summary PRETREATMENT: split -500 gal trash trap - 1000 dose tank 1500 gallon trash trap / Multi -flow pump tank 750 gallon Multi -flow unit =ft of =inch supply line to Multi Flow 30 gpm =ft. of head, TREATMENT pump =sec ON time 29.4 min OFF time Timer ON float to be set at 18 inches from bottom of tank Hi level Alarm to be set at 1 75 % of tank capacity UV light req'd No DISPERSAL: 1500 gallon Dose tank (minimum) at 29.00 gpi 47 GPM 24 ft. of head, DISPERSAL Pump =inch swing on Demand float or =minutes ON time a =hours OFF time 19 inches from bottom of tank to "pump ON" float, or =inches to "timer ON" float 22 linches from bottom of tank to "Hi Level Alarm" float 90 ft. of =inch supply linE with end feed manifold connection Laterals--]ft1.50 inch diameter 65.0 feet long 3.0 lateral spacing 3/16 inch perfs =ft perforation spacing =clean out Ft valve box assembly Bottom of rock no more than: 16 inches, or =ft. Below existing grade 1 2--1 inches of rock below the pipe Overall Dimensions: F 15 ft. wide by 67.0 ft. long Pressure Bed Rock Bed materials: =yd or *1.4= 74 ton INSPECTOR CHECKLIST - Multi flow - Pressure bed Lot 2,B1k.1, Fox Hill Orono El WELL setbacks: 20' to pressure tested sewer line (5 psi for 15 min) 50' to everything 1 00'to dispersal area with shallow well PROPERTY LINES setback: 10' to everything Road setback: platted: 10' prop line. Metes ti 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) ElSewer line Et baffle connection (no 90's, 3' between 45's, slope min 1" in 8', max 2" in 8'). (no depth reqs, clean out every 100', Sch 40 pipe) ElSeptic tank and risers (water tight, insulated, proper depth, existing verified by pumping) Mfg- 1500 gallons trash trap/multi-flow dose tank Riser over outlet, riser over inlet or center, and 6"+ inspection pipe over any remaining baffles. 750 gallon Multi -flow unit UV light req'd No Treatment pump 30 gpm 10 head 17.6 gal 35 sec ON 29.4 min OFF 10 ft 2 inch supply line F1 timer ON float 18 inches from bottom HLA at 75% tank capacity Dispersal-. Dose tank risers and piping (water tight, insulated, proper depth, drainback) Mfg 1500 gallons El dose pump 47 gpm 24 head VERIFY PUMP CURVE 4.3 min ON 9 hr OFF float setting drop 7.0 inches at =gpi "DESIGNED" 203.0 gal dose divided by gpi "INSTALLED" = inches float drop (field corrected) LABEL pump requirements and drawdown on riser or panel Cam lock 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 Bed dimensions 15 X 67.0 Rock depth below pipe 12 inches Rock bottom elevation 16.0 inches from Grade to bottom of rock (max) cover depth of 12"+ VERIFY 5 laterals (1-2' from edge of rock) 1.50 inch pipe size (sch40 pipe Ft fittings) 3.0 ft lateral spacing 3/16 inch perforations (smaller is ok) El3.0 ft perforation spacing Air inlet at end of laterals, and at top feed manifold. VERIFY clean outs (deep bed 2' of head) (no hard 90's) 4" inspection pipe to bottom of rock, anchored VERIFY Abandon existing system if necessary =Re -use existing tank certification monitoring plan and type well abandonment if necessary i --s Q cn Ay- r-! CD CD C'D r'�F L? 1 U./ �ff u � q cv r.� i --s Q cn Ay- r-! CD CD C'D r'�F L? 1 U./ �ff a cv r.� n co a � cin 4 C3. O O D ^moi �t p B g. 5 i,04 o c . Co.Y v o t�l 9 - CD Q. d 4A V VA O w y O �y Oo .(y O� Vii a' �• �.• co *r! cr -' CL o O p n i --s Q cn Ay- r-! CD CD C'D r'�F n Q ✓� , rr ', T Vf A IuA J \ \ ° LCI m \ \ x ® & A x GIIN- ( C r ± . � G . . 6 I § r. �i��� G ' �1 39 �G A. o { r IC iihh E � x d gi JU 3Lp II 3I3 F O � I o N yLj " U !I rn �?. C71 o LI— G r� `s E b N LO Ii a0 m I { G ,9 x 6 r. �i��� 11 ' �1 39 �G A. o { r IC iihh E � x d II 3I3 O � I o yLj " U rn ) 0 o O ro `� 0 O i r Ci ry�T7j rsWn��� f0 G✓� �i��� ' A. o { r IC d II 3I3 O � Le N io' CA �� St�cP 7 �•�' �wwW cGju,�,,W o © w� t W , . r �C, ) w 0 b _ �- G 00-D Q + v w .n "Type IV - performance" Monitoring and Maintenance Disclosure Property address: The septic system designed for this site has been classifed as a Type IV system and will therefore require ongoing monitoring and maintenance for the life of the system. It is the owners responsibility to discuss these requirements (as listed on the permit) and their respective intervals and costs with their septic designer and/or maintenance provider. Monitoring and maintenance may include (but is not limited to): - Manufacturer required maintenance - Tank pumping Taking Lab samples It is the owners responsibility to hire an M.P.C.A licensed septic professional to perform this work, and for that professional to submit an annual report to the Local Unit of Governement. All other long term septic system costs such as repairs and emergency service calls outside of any warranty coverage (if applicable), are outside the scope of this disclosure. I acknowledge and understand these requirements, and agree to contract a licensed professional to monitor and maintain this system. Owner Signature Date IJ -10 ■ a«iliun is: torms and Reference UNIVERSITY OF MINNESOTA Septic System Best Management Practices Septic systems protect human health and the environment by safely recycling wastewater and returning it to the natural environment. It is your job as the homeowner to be sure this happens effectively and safely. As with your car, regular maintenance and attention is needed to keep it operating efficiently in a cost effective manner_ Septic Tank Functions: • Separates into three layers: scum (stuff that floats), sludge (stuff that sinks), and the liquid. • The solids and scum are held until removed by the maintainer. Anaerobic bacteria work to break down wastes, prepare the liquid for the drainfield. • The liquid is delivered to the soil treatment area to complete the treatment process. • If solids are not removed, they can end up in the soil treatment area, causing (often irreparable) damage, • Factors that increase frequency of pumping: use of garbage disposal, water treatment unit that discharges into the septic system, in-home daycare or other reason a large number of people are present most of the time, laundry on the 2nd floor, excessive use of water and strong cleaning products. Best management practices: • Tanks need to be evaluated every two to three years and pumped if necessary. Some counties require pumping on a specified basis. New homes—pump within 3-12 months of occupancy the first time, • Never allow a tank to be cleaned through the inspection pipe. This is not allowed by code, and it does not allow a good cleaning to occur. Scum can plug the baffle, baffles can be knocked off. Tanks should only be cleaned through the manhole or maintenance hole. • Be sure baffles, effluent screen, pumps and other components are inspected when the tank is pumped_ • Install risers on the manhole covers to allow easier access. Insulate the cover and secure tightly. • An effluent screen will prevent most solids from reaching the soil treatment area. Install and clean according to manufacturer recommendations. • Never use additives. The cleaners are harmful to your system. They do not replace good management practices. Starters and feeders are not effective. • Warning: NEVER go into a septic tank—there are dangerous gases and no oxygen! • Do not ignore alarms—troubleshoot the problem. Septage—the solids from the tank are usually land -a lied Soil Treatment Area: Trench or Mound Functions: • Soil organisms destroy pathogens (bacteria, viruses). • Remove phosphorus, reduce nitrogen content. • Recycle clean water into the soil and ground water. Water and nutrients enter the ground water, evaporate through plants, and are used by plants. Best management practices: • Maintain vegetative cover (turf grass, native grasses, flowers). Mow, but do not fertilize, bum or over -water. • Keep all vehicles, bikes, snowmobiles, etc. off, • Do not plant trees or shrubs near drainfield. • Inspect for cracked, missing inspection pipe covers. • Follow practices to prevent freezing, including ------r, U,G cuurC system n needed. Household Best Management Practices Manage water use: • Repair all leaking faucets, toilets, fixtures. • Change to low flow toilets, shower heads. • Replace appliances with low water use models. • Spread water uses evenly throughout the day and week.. • Re-route clean water sources: water softener, treatment Unit recharge water, high efficiency furnace drip, sump PUMPS to separate drainage area. Watch what oes down the drain: • The toilet is not a garbage can—nothing should be flushed except human waste and toilet paper. • Excess medications—return to pharmacy or land -fill. • Limit or eliminate drain cleaner use. • Do not use automatic toilet cleaners, disposable brushes. • Do not use every -use or automatic shower cleaners, • No hazardous waste, paints, solvents, chemicals. Use disposable paint brushes. • Eliminate or limit use of garbage disposal. • No chlorine treated water such as from hot tubs. Mana a roduct use; • Minimize use of anti -bacterial soaps, cleansers. • Detergents: measure accurately, use as little as possible. • Limit use of bleach -based cleansers. control odors. Septic pumpers must" r, lb duucu In me track t follow strict guidelines to Protect public safety and water quality. Septage di poral is managed by the MN Pollution Control Agency (MPCA) and the Environmental Protection Agency (EPA). For more information: Order the Septic System Owner's Guide. Call 800-876-8636 or go to http-//shop.extension.umn.edu. Onsite Sewage Treatment Program web site: hU2-//septic tamp edu University of Minnesota Extension httEl/www.extension umn edu Writt ®2008 Regents of the University of Minnesota. All rights Reserved. The University of Minnesota seanequal opportunity ey Valerie duucca or and employer, This material) can egional Extension Educator, b07 3109 made available in alternative formats for people with disabilities. Call the water Resources Center. 612.624-9292. UNIVERSITY OF MINNESOTA Septic System Management Plan s� for Below 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 Iicensed 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 �p \.A v�o Properly Address 1%15w Property ID System Designer _ yet Phone I System Installer Phone Service Provider/Maintainer Phone Permitting Authority L 1-<� 0 q OV4 IS,) Phone 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-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 http://shop.extension.umn,edu/ httP://septic-umn.edu Version 6/10!2010 -I- ` UNIVERSITY OF MINNESOTA Septic System Management Plan for Below Grade Systems Your Septic System hEe�,hak - •F'� �jtsi Gme+M surla(e Om-buhan medu _ SeWc4srt � — saa�,,x ss"'osmn m warcnp mMaan Septic System Specifics Trenches: Jud otaf-11PfTtet 0 System is subject to operating permit* System Type: I 1I II v* y* System uses Uv disinfection unit* (Based on MN Rules Chapter 7080.2200 – 2400) Type of advanced treatment unit. MSA —5t, o _ Location of additional STA:_�d y-� a s' �c y�' *Additional Management Plan required Dwelling Type Well Construction Number of bedrooms: 5 Well depth (ft): System capacity/ design flow (gpd): Cased well Casing depth: HOther Anticipated average daily flow (gpd): 9 a :�' (specify): Comments Business? ❑ What Distance from septic (ft): type? Is the well on the design drawing?❑Y F–J N Saa�.,t 4�tsr� eptic Tank ✓ One tank Tank volume: -15oo _ gallons • / Pump Tank (lone) 5 p gallons 01 Does tank have two compartmentsaON Effluent Pump make/model: Two tanks Tank volume: gallons Pump capacity 9? GPM ❑ Tank is constructed of TDH A'` Feet of head ❑ Effluent Screen type: ❑ Alarm location 20rs40., Soil Treatment Area (STA) Trenches: Jud otaf-11PfTtet Gravity distribution Pressure Number of trenches: at feet each distribution STA size (width x length): I $ x l *? ft v` Inspection ports a Cleanouts Location of additional STA:_�d y-� a s' �c y�' Additional STA not available UNIVERSITY Septic System Management Plan` OF MINNESOTA for Below 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 wili determine if your tank needs to be pumped. System Designer: check every .a�A_ months Local Government: check every months My tank needs to be checked State Requirement: check every 36 months every a 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 and leaks, 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 installed 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 io% 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 rage 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- UNIVERSITY Septic System Management Plan _ OF MINNESOTA for Below Grade Systems 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 inletloutlet 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. • Gravity trenches and beds. Check the number of gravity trenches with ponded effluent. Identify the percentage of the system in use. Determine if action is needed. • Pressure trenches and beds - Lateral flushing. Check lateral distribution; if cleanouts exist, flush and clean as needed. All other components — inspect as listed here: -4- UNIVERSITY Septic System Management Plan OF MINNESOTA for Below Grade Systems Water-Use Appliances and���''' Equipment in the Home Management Tips Appliance Impacts on system • Uses additional water. • Use of a garbage disposal is not recommended. Garbage disposal • Adds solids to the tank. a Finely-ground solids may not settle. Minimize garbage disposal use. Compost instead. Y Unsettled solids can exit the tank To prevent solids from exiting the tank, have your 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. • Overloading your system may • Limit the addition of extra solids to your tank by Washing machine prevent solids from settling out in g the tank. Unsettled solids can exit usingliquid or easilybiodegradable � gradable detergents. ° Install a lint filter after the washer and an effluent the tank and enter the soil treatment screen to your tank area. • Wash only full loads. a Limit use of bleach-based detergents. a Think even — spread your laundry loads throughout the week. 2nd floor laundry a The rapid speed of water entering the tank may reduce performance. ° Install an effluent screen in the septic tank to prevent the release of excessive solids to the soil treatment area. ° Be sure that you have adequate tank capacity. • Powdered and/or high-phosphorus detergents can negatively impact the • Use gel detergents. Powdered detergents may add Dishwasher pe formatnc ea f your tank and soil solids to the tank. 6 Use detergents that are low or no-phosphorus. ° New models promote "no scraping". o Wash only full loads. They have a garbage disposal posal inside. ° Scrape your dishes anyways to keep undigested solids out of your septic system. ° Expand septic tank capacity by a factor of 1.5. ° Finely-ground solids may not settle. Grinder pump (in Unsettled solids can exit the tank home) and enter the soil treatment area, °Include pump monitoring in your maintenance schedule to ensure that it is working properly. a Add an effluent screen. Large bathtub m Large volume of water may overload your system. ° Avoid using other water-use appliances at the same time. For example, don't wash clothes and take (whirlpool) ° Heavy use of bath oils and soaps can a bath at the same time. impact biological activity in your tank and soil treatment area. ° Use oils, soaps, and cleaners in the bath or shower sparingly, Olean Water Uses Impacts on System Management Tips ° Re-route water into a sump pump or directly out of High-efficiency ° Drip may result in frozen pipes furnace during cold weather. the house. Do not route furnace recharge to your septic system. ° These sources produce water that is not sewage and Water softener ° Salt in recharge water may affect Iron filter system performance. Reverse osmosis ° Recharge water may hydraulically should not go into your septic system. • Reroute water from these sources to overload the system. another outlet, such as a dry well, draintile or old drainfield. ° When replacing, consider using a demand-based • Water from these sources will likely Surface drainage overload the system. Footing drains recharge vs. a time-based recharge. ° Check valves to ensure proper operation; have unit serviced per manufacturer directions -5- 13 -OA ■ n1t:L11UN 13: Forms and Reference UNIVERSITY Septic System Management Plan OF MINNESOTA for Below Grade Systems Uk Maintenance Log Track maintenance activities here for easy reference. See list of management tasks on nage., 7,7-1 d Mitigation/corrective action plan: s G� j,t,��,.(�_ � a ,�ti �� 4— � t s — G �s� tsj'�'f� "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, Z agree to adequately protect the reserve area for future use as a soil treatment system." ProPertY Owner Si ature: T7ate Management Plan Pre aced B : •(,2 L- y,w- � Certification # C, 2 v.� c..0 Pertnittin Authority: ®2010 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 formats upon request Contact the Water Resources Center, 612.624-4282. The onsite sewage Treatment Program is delivered by the University of Minnesota Extension Service and the University of Minnesota Water Resources Center. emrr -6- 13-OA 6 -