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Home My WebLink About12-05-2018 Septic DesignJoseph 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 December 5, 2018 Norton Homes 4775 Augusta Street Orono, Hennepin County This on-site Sewage Treatment System is designed for a Type 1, Five -bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The periodically saturated soils were located at 12-18 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 soils at a depth of 12" have a percolation rate averaging 11.5 MPI. A 2250 -gallon septic tank or its equivalent is designed for this site. All 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. Use 7132 -inch perforations on the laterals A 1250 -gallon pumping chamber or larger 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. Keep all heavy a ui ment off of the Proposed treatment areas before during and after construction. The area around both sites must be fenced off by the contractor before any construction begins. With proper installation and maintenance, this system should have no problem in treating septic effluent effectively. Nothing other than gray water, (laundry, showers, etc.) Human water and toilet tissue should be disposed of into the septic tanks. Iron filters cannot go into the septic sstem. 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 septic tanks every two years. Sincerely, Cr / Joseph J. Olson 2011 purple code Mound Design www.SepticResource.cam (vers 15.2) Property Owner: Norton Homes Site Address: 4775 Augusta Street Comments: Date: 12/5/2018 PID: 0611723330010 instructions: = = enter data 0 m adjust if desired u = computer calculated - DO NOT CHANGE! 1) bedroom Type I ' l Residential System 2) 750 GPD design flow 3) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks 4) 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size / LUG req'd) Tank options: none s) 1.2 GPD/ft2 mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed 6) 10.0 ft rockbed width 63.0 ft rockbed length 7) 3.Q ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection 8) laterals 61.0 feet long 21.0 perfs / lateral 63 perfs total (1 /2 a perf means the first perf starts at the middle feed manifold) 9) 7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation for this perf size Et spacing, & pipe size on line 12, max perfs/lateral = F30-1, line #8 must be less > OK 10) 4.0 doses per day (4 minimum) 11) 188 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) 30 feet of 2.0 inch supply line leads to =gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 193 gallons TOTAL pump out volume (treatment + drainback) 1s) 10 feet vertical lift from pump to mound laterals, leads to a: 16) 36 IGPM @ 17 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) 17) 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25.49 gpi leads to a 18) 7.6 inch swing on Demand float, or timed dosing of5.4 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design ftow)Mhrs OFF test and adjust as necessary) 19)If inches from bottom of tank to "Pump OFF" float 20) inches from bottom of tank to "Pump ON" float, orP3fl inches to "Timer ON" float if time dosed 21) inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed 22) 664 gallons reserve capacity (after High Level Alarm is activated) 3) 0.45 gpd/ftz Absorption area Soil Loading Rate, which gives a mound ratio of 2.7 (minimum) (this must match the soil boring tog) desired mound ratio 1 2.7 4) Qpercent site slope (0-20% range) �9 (% downslope site slope, if different than upslope) 5) 1$ inches, or 7.5 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains =D inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 6) 18 inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 7) 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 8) O.Q ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 9) 4:1 upslope ratio 10 ft. upslope berm o) 3:1 sideslope 13 ft. sideslope berms i) 4;1 downslope 28 ft. downslope berm Overall Dimensions: 10.0 1 ft. wide by 63.0 ft. long Rock bed 48 ft. wide by 89 ft. Long Mound footprint 4" inspection pipe 18" cover on top Upslope herrn 101 L Downslope berm 28 12' cover on sides (6" loamy cap & 6" topsoil) 1.5 Clean sand Lift 1.5 Depth to limiting p 1-1 Absortion Width ~ 27.0 -- - - - - --- Note 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. Rock Bed: 1D.D ft. by aflft. by ®inches under pipe, plus 20% gives 21 yds or *1.4= 29 ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for Loamy cap if desired) 27.6 Up + 1D8.4 downslope + 12.8 ends + 45.5 under rock =233 yd' or *1.4= 326 ton plus 20% Loamy Cap: 44 ft. by 85 ft. 6" deep, plus 20% gives F--84—]yd" or *1.4= 118 ton Topsoil: 48 ft. by 89 ft. 6" deep, plus 20% gives 95 yds or "1.4= 133 ton I hereby certif that I have completed this work in accordance with all applicable ordinances, rules and taws. Rusty Olson"s Soil ft Perc 810 12/5/2018 Designer Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none Z)u7a Larger lanK WItn rnuu.ipLe comp/ LarrKs 1250 gallon Dose tank (minimum) at 25.49 gpi 36 GPM @ 17 ft. of head, Pump required 7.6 inch swing on Demand float which translates to roughly 4.8 inches of float tether length if time dosing is required --> 5.4 minutes ON time Ft =hours OFF time 20 inches from bottom of tank to "pump ON" float, or 12 1 inches to "timer ON" float 23 linches from bottom of tank to "Hi Level Alarm" or 1 33 linches to "Hi level alarm" if time dosed 30 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 18 inch, or 1.5 ft. Sand Lift Mound 10.0 ft. wide by 63.0 ft. long Rock bed 3 laterals 2.00 inch diameter 61.0 ft. long 3.0 ft. lateral spacing 7/32 inch perfs 3.0 ft. perforation spacing No Effluent filter Et alarm 3 Ictean out & 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 10 ft. upslope berm 3:1 sideslope 13 ft. sideslope berms 4:1 downslope 28 ft. downslope berm 4" inspection pipe 18" cover on top U pslope be rm 10 _ t I _ 1.5 11 Clean sand lift Downslope berm 1 28 12" cover on sides (6" loamy cap & 6" topsoil) 1.5 Depth to Limiting r�nc�itr'an � Absorption Width Note; For 0 to 1 slopes, Absorption W dth is measured from the Bedequally in both directions. For slopes >1%, Absorption .t�4�fdtfr is measured downhill from the upslope edge of the Bea! Rock Bed: 21.0 yd3 or *1.4= 29 ton Mound Sand: 233 yd or *1.4= 326 ton Loamy Cap: 84 yd or *1.4= 118 ton Topsoil: 95 yd or *1.4= 133 ton 6 inches under pipe calculation based on 3:1/4:1 slope from top of rockbet 6" deep 6" deep INSPECTOR CHECKLIST - mound 4//5 Augusta Street 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 & 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 se 10' to bed,tank Ft 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 Ft alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1250 gallons L1 dose pump 36 gpm 17 head VERIFY PUMP CURVE 5.4 min ON 9 hr OFF float setting drop 7.6 inches at 25.5 gpi "DESIGNED" 4.8 inches approx float tether length 193.0 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 flow measurement: CT, ETM, time dosed, home water meter mound absorption area rough up mound rock dimensions 10.0 K 63.0 Sand lift depth 18 inches. (Jar test : 2" sand leaves < 118" silt after 30 min) ❑ Absorption Sand beyond rock 0.0 upslope 17.0 downslope ❑ Bermed topsoil beyond rockbed 10 upslope 13 sideslope 28 downslope 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 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 �Re-use existing tank certification monitoring plan and type well abandonment form - if necessary G� H Ia. E 3 CL Wo z a� v f I a� LA Wo �� LA M IL CL 0 •& OLD4 Ln W f I �� LA M IL CL 0 •& OLD4 Ln W Property Owner / project: Property Address / PID: Soil Observation Log Owner Information Norton Homes 4775 Augusta Street www.SepticResource.com vers 12.4 Date 6/1/2014 Soil Survey Information ❑ refer to attached soil survey Parent matl's: ❑� Till ❑ Outwash ❑ t.acustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder 11 Side slope ❑ Toe slope soil survey map units: L41 D2 slope 9 % direction- Linear Soil Log #1 7 Boring ❑ Pit Elevation 1000.0 Depth to SHWT 14 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr3/2 Friable Moderate Blocky 6-14 Loam 35 10yr4/4 Friable Strong Rlockv 14-24 Loam <35 10yr5/4 IOy4/8,1-6/10y Firm Strong Black: <35 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 Comments: 4775 Augusta Street Soil Log #2 0 Boring ❑ Pit Elevation 1000.4 Depth to SHWT 18 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr3/2 Friable Moderate Blocky 6-12 Loam <35 10yr4/3 Friable Strong Blocky 12-18 Loam <35 10yr5/4 Friable Strong Block} 18-24 Clay Loam <35 10yr5/4 10y4/8,1 -6/10y Firm Strong Blocky <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive 4775 Augusta Street Soil Log #3 ❑ Boring ❑ Pit Elevation 988.0 Depth to SHWT 18 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-14 Topsoil <35 10yr3/2 Friable Moderate Blocky 14-18 Loam <- 3 5 10yr4/4 Friable Strong Blocky 18-24 Loam <35 10yr5/4 10y4/8,1-6/l0y Firm Strong Blocky <35 loose lease single grain 3s - sa 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 was completed in accordance with MN 7080 and any local reqs. Rusty Olson's Soil & Perc. 810 esigner Signature Company License # 4775 Augusta Street Soil Log #4 ❑ Boring ❑ pit Elevation 988.2 Depth to SHWT 18 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil T<35 IOyt-3/2 Friable Moderate IBIouky 6-14 I Loam I <35 I 10yr4/4 Friable I Strong (Block% 14-24 Loam <35 10yr5/4 I Oy4/8,1-6/1 Oy Firm Strong Blocky loose single grain <35 granular blocky moderate 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 4775 Augusta Street Soil Log #5 0 Boring [] pit Elevation 998.8 Depth to SHWT 16 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-8 Topsoil <35 10yr3/2 Friable Moderate Blocky 8-16 Loam 16-24 Loam <35 <35 <35 35-50 >50 <35 35-50 >50 I Oyr4/4 1 OyrS/3 Friable I Strong (Blocky 10y4/8,1 -6/10y IFirm loose friable firm rigid loose friable firm rigid I hereby certify this work was completed in accordance with .LIN 7080 and any local reqs. Rusty Olson's Soil & Pere, esigner Signature Company Strong OBlocky loose single grain weak granular blocky moderate Prismatic platy strong massive loose single grain weak granular blocky moderate Prismatic platy strong massive 810 License # Property Owner / project Property Address / PID: Soil Observation Log www.SepticResource.com vers 12. Owner Information Norton Homes 4775 Augusta Street Date 6/1/2014 Soil Survey Information ❑ refer to attached sail survey Parent matt"s: 0 Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder Q Slde slope ❑ Toe slope soil survey map units: L41D2 slope 9 % direction- Linear Soil Log #6 0 Boring ❑ Pit Elevation 986.1 Depth to SHWT 12 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 Topsoil <35 10yr3/2 Friable Moderate Blocky 12-18 Loam <3S 10yr4/4 10y4/8,1 -6/10y Friable Strong Blocky <35 loose loose single grain 35-50 friable Weak granular blocky >50 firm moderate prismatic platy rigid strong massive <35 loose loose single grain 35 - 50friable 'firm weak granular blocky >50 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 Comments: Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson"s Perc. starting at 1:29 P.M. On 7102114 Location: Lot 8, Blk 1 Hole number: 1' Date hole was prepared 7/01114 Depth of hole bottom —12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-12" Dark brown loam 10yr312 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/01/14 depth of initial water filling 12 inches above 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 1:39 1:54 6" 1.0 15.0 2:01 2:16 6" 1.0 15.0 2:17 2:32 6" 1.0 15.0 AVERAGE PERC, RATE 15.0 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:29 P.M. On 7102114 Location: Lot 8, Blk 1 Hole number: 2 Date hole was prepared 7101114 Depth of hole bottom _12"� inches, Diameter of hole —6"—inches. Soil data from test hole: Depth, inches Soil texture 0-12" Dark brown loam 10yr312 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/01/14 depth of initial water filling 12 inches above 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 1:40 1:55 6" 1.0 15.0 2:00 2:15 6" 0.9 16.7 2:18 2:33 6" 0.9 16.7 AVERAGE PERC. RATE 16.1 MIDI Percolation Fest Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:29 P.M. On 7102114 Location: Lot 8. Blk 1 Hole number: 3 Date hole was prepared 7101/14 Depth of hole bottom _12"_ inches, Diameter of hole _6"— inches. Soil data from test hole: Depth, inches Soil texture 0-12" Dark brown loam 10yr3/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7101/14 depth of initial water filling 12 inches above 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 1:41 1:56 6" 2.7 5.5 1:59 2:14 6" 2.6 5.8 2:19 2:34 6" 2.5 6.0 AVERAGE PERC. RAPE 5.8 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:29 P.M. On 7102114 Location: Lot 8. Blk 1 Hale number: 4 Date hole was prepared 7/01114 Depth of hole bottom _12"_ Soil data from test hole: Depth, inches 0-12" inches, Diameter of hole _6"— inches. Soil texture Dark brown loam I0yr3/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches.- Date nches:Date of initial water filling 7101114 depth of initial water filling 12 inches above 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 1:42 1:57 6" 1.7 8.8 _.. 1:58 2:13 6" 1.6 9.4 2:20 2:35 6" 1.6 9.4 AVERAGE PERC, RATE 9.2 MPI