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Home My WebLink AboutSeptic Design iNaueid --�i``9&8P\ 0,119 Ve''‘e -tito, 4hc,0 ri e-cd_c -/-e2 h e dccar�e I n S'�.-019 (j.e/lint( etr�rt�U4 (co K ly ' 116140 COPY 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 Revised December 6,2017 Wooddale Builders 1 180 Hunter Drive 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 14-26 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 7 MPI. 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 7/32-inch perforations on the laterals. This system is designed with a 2250-gallon combination septic tank. A 1300-gallon pumping chamber will need to be installed to lift the effluent to the treatment area. The power supply and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure.A warning device must be installed with light and sound devices:this is in case of a pump failure. A flow measurement device must be installed. Including but not limited to a water meter,event counter,running time clocks or electronically controlled dosing. Keep all heavy equipment 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.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, � Joseph J. Olson RECEIVED JAN 122010 CITY OF ORONO . . ._ • -- '-----_ NTN. , N 9 i\ 100 N. :-.: . 51 0 lc 1 - • c; • ,1 , N, /I ' 5 \ k \ ---._,_ •, 419 ., -, > 0 1 1 2 2 , ._._ , :8 \ -- -n;,,,, 1 , ,.., ,,, ,./: „ • i ic,,, „ ., I ' \•- .5_ -..._ . t....t-• ...„_ ,......) - U _ i 1 • - .r . 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IL, . ..,z,illik) ii — , --., I i Is o c, rba Its . .18' Ili\ ' ::11WI MOr.' 1 1 i g i ' 1' ,.. . 1- I 4 • 11 t s c ff n o V 1 As1 _8 . ° Po s 0 a 2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: Wooddale Builders Date: 12/6/2017 Site Address: 1180 Hunter Drive PID: 2511823420006 Comments: instructions: = enter data = adjust if desired = computer calculated - DO NOT CHANGE! I) 5 bedroom Type I Residential System 750 GPO design flow ;, 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 ;, 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) 3.0 ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection s, 3 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) 7/32 inch perfs at 1 feet residual head gives 0.56 gpm flow rate per perforation for this perf size &t spacing, a pipe size on line 12, max perfs/lateral = 30 , line #8 must be less --> OK iu) 4.0 doses per day ( 4 minimum) I i; 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) 238 feet of 2.0 inch supply line leads to 40 gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 228 gallons TOTAL pump out volume (treatment+ drainback) 15) 11 feet vertical lift from pump to mound laterals, leads to a: 16) 36 GPM @ 26 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) 17, 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi leads to a is) 8.9 inch swing on Demand float, or timed dosing of 6.3 min ON (confirm pump rate with drawdown (this delivers Average flow, =70%of Peak design flow) 9 hrs OFF test and adjust as necessary) 10) 12 inches from bottom of tank to "Pump OFF"float 20, 21 inches from bottom of tank to "Pump ON" float, or 12 inches to "Timer ON"float if time dosed 21) 24 inches from bottom of tank to "Hi Level" float, or 34 inches to "Hi Level" float if time dosed 22) 688 gallons reserve capacity (after High Level Alarm is activated) 23) 0.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of 2.7 (minimum) (this must match the soil boring log) desired mound ratio 2.7 8 percent site slope (0-20% range) 8 (%downslope site slope, if different than upslope) 25) 14 inches, or 1.2 ft. to Redox or other limiting condition (need at least 12"to be a Type I) Treatment zone contains 0 inches of 0%soil credit, and 0 inches of 50% soil credit. Giving a: 20) 22 inch, or 1.8 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 27) 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 28) 0.0 ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 20) 4:1 upslope ratio 12 ft. upslope berm 3o) 3:1 sideslope 14 ft. sideslope berms 3h 4:1 downslope 27 ft. downslope berm 32) Overall Dimensions: 10.0 ft. wide by 63.0 ft. long Rock bed 49 ft. wide by 91 ft. long Mound footprint 4" inspection pipe 18" cover on top <Upslope berm 12 Downslope berm 27 12" cover on sides (6"loamy cap&6"topsoil) 1.8 Clean sand lift 1.2 Depth to Limiting Limiting Condition _ Absorption Width 27.o I�Note: For Oto 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 33 Rock Bed: 10.0 ft. by 63.0 ft. by 6 inches under pipe, plus 20% gives 21 yd' or*1.4= 29 ton 34) Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 37.4 up + 119.3 downslope + 14.7 ends + 52.1 under rock = 268 yd3 or*1.4= 375 ton plus 20% 35) Loamy Cap: 45 ft. by 87 ft. 6"deep, plus 20% gives 87 yd'or*1.4= 122 ton 30) Topsoil: 49 ft. by 91 ft. 6" deep, plus 20% gives 100 yds or*1.4= 140 ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil Et Perc 810 12/6/2017 signer Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none 7U7o larger LanK WILL) rnutupte wnipi LanKS 1300 gallon Dose tank (minimum) at 25.49 gpi 36 GPM @ 26 ft. of head, Pump required 8.9 inch swing on Demand float which translates to roughly 5.5 inches of float tether length if time dosing is required --> 6.3 minutes ON time Et 9 hours OFF time 21 inches from bottom of tank to "pump ON"float, or 12 inches to"timer ON"float 24 inches from bottom of tank to"Hi Level Alarm"or 34 inches to"Hi level alarm" if time dosed 238 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 22 inch, or 1.8 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 clean out Et valve box assemblies 27.0 ft.Total sand ABSORPTION width (minimum) 0.0 ft. upslope and sideslope (sand beyond rockbed, minimum) 17.0 ft. Downslope (sand beyond rockbed, minimum) Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 12 ft. upslope berm 3:1 sideslope 14 ft. sideslope berms 4:1 downslope 27 ft. downslope berm 4" inspection pipe 18" cover on top Upslope berm 12 Downslope berm 27 12" cover on sides (6"loamy cap&b"topsoil) 1.8 Clean sand lift 1.2 Depth to Limiting Limiting Condition -- ----- __ Absorption 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: 21.0 yd3 or*1.4= 29 ton 6 inches under pipe Mound Sand: 268 yd3 or*1.4= 375 ton calculation based on 3:1/4:1 slope from top of rockbei Loamy Cap: 87 yd3 or*1.4= 122 ton 6" deep Topsoil: 100 yd3 or*1.4= 140 ton 6"deep INSPECTOR CHECKLIST - mound 1180 Hunter Drive 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 sc 10'to bed,tank & 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 & alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1300 gallons dose pump 36 gpm 26 head VERIFY PUMP CURVE 6.3 min ON 9 hr OFF float setting drop 8.9 inches at 25.5 gpi "DESIGNED" 5.5 inches approx float tether length 228.0 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 X 63.0 Sand lift depth 22 inches. (Jar test : 2" sand leaves < 1/8"silt after 30 min) Absorption Sand beyond rock 0.0 upslope 17.0 downslope Bermed topsoil beyond rockbed 12 upslope 14 sideslope 27 downslope cover depth of 12-18"+ VERIFY 3 laterals (1-2'from edge of rock) 2.00 inch pipe size (Sch40 pipe E fittings) 3.0 ft lateral spacing 7/32 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 i ...Av. i "'---- System Elevations ,- - -,---:,-,---.-,---.„,„— .........A.....„.1..,.... i benchmark -, ., t — - SHWT / Mound (Grade elevations are existing. If a / loamy cap , . different final grade is desired it should , / lateral be shown and described here.) bottom rock , grade (at trpslope rock bed) ,,,..,. '',...._ SHWT (at upslope rock bed) --- I I if i ,3__ i ---/' 11 - 4 I ___ I I I 1_ Pa [1- f 7 7 Sewer pipe exiting house Septic Tank Septic Tank (if applicable) Pump Tank Grade Grade Grade Grade Pipe _ inlet inlet inlet Tank bottom Tank bottom Tank bottom Soil Observation Log klv1w.SeptieResource.com vers 12.4 Owner Information Property Owner/project: Wooddale Builders Date 3/7/2015 Property Address'PID: 1180 Hunter Drive Soil Survey Information ❑ refer to attached soil survey Parent matl's: 0 Till ❑ Outwash ❑ Lacustrine ❑Alluvium ❑ Organic ❑ Bedrock landscape position: ❑Summit ❑ Shoulder 0 Side slope ❑ Toe slope soil survey map units: L22C2 slope 8-16 % direction- Lineal Soil Log#1 0 Boring ❑ Pit Elevation 1019.6 Depth to SHWT 26" Depth (in) Texture fragment% matrix color redox color consistence grade shape 0-4 Topsoil <35 10yr412 Loose Loose Single grain 4-20 Clay Loam <35 141'514 Firm Strong Blocky 20-26 Loam <35 I0yr514 Firm Strong Blocky loose weal: 26-30 Loam <35 10yr614 10y418,1-6110y Firm Prismatic moderate strong <35 loose loose single grain friable weak granular blocky 35-50 %50 firm moderate prismatic platy rigid strong massi%L Comments: 1180 Hunter Drive Soil Log#2 Boring ❑ Pit Elevation 1019.6 Depth to SHWT 22" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-4 Topsoil <35 I 0yr4/2 loose Loose Single grain -1-20 Clay loam <35 10yr5/4 Firm Strong Blocky 20-26 Loam -r-35 10yr5/4 Firm Strong 131ucky loose 26-30 Loam <35 10yr6/4 10y4/8.1-6/10y Firm weak Prismatic moderate strong loose loose <35 single grain friable weak granular blocky 35 -50 firm moderate prismatic platy >50 rigid strong massive 1180 Hunter Drive Soil Log#3 ❑� Boring ❑ Pit Elevation 1023.8 Depth to SHWT 14" Depth (in) Texture fragment°ia matrix color redox color consistence grade shape 0-4 Topsoil <35 10yr4/2 Loose Loose Single grain 4-14 Clay Loam <35 10yr5/4 Firm Strong Blocky 14-24 Sandy clay Loam ,'35 10yr5/4 I0y4/8,1-6110y Firm Strong Prismatic loose loose single grain <35 friable weak granular blocky 35 -50 >50 firm moderate prismatic plat} rigid strong massive loose loose <35 single grain friable weak granular blocky 35 -50 >50 firm moderate prismatic platy rigid strong massive I hereby cerci i.this work was completed in accordance with AIN 7080 and ani'local req's. Rusty Olson's Soil & Pere 810 signer Signature Company License • 1180 Hunter Drive Soil Log#4 0 Boring ❑ Pit Elevation 1023.8 Depth to SHWT 22" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-6 Topsoil <35 I Ovr4 2 Loose Loose Single grain 6-22 Clay Loam <35 I Otir4'4 Firm Strong 131ock� 22-28 Clay Loam <35 10 vr54 10y4/8,1-6/10y Firm Strong Blocky loose loose single grain friable weak granular blocky' 35 firm moderate prismatic platy rigid strong massive loose loose <35 single grain friable weak granular blocky 35-50 >50 firm moderate prismatic platy rigid strong massive 1180 Hunter Drive Soil Log#5 0 Boring ❑ Pit Elevation 1017 Depth to SHWT 18" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-4 Topsoil 35 10yr4/2 Loose Loose Single grain 4-18 Clay Loam -35 10yr4'4 Firm Strong Blocky 18-24 Loam --35 I0yr5/4 10y4/8.1-6/10y Finn Strong i;lod, loose loose <35 single grain 35 50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive loose loose <35 single grain _ friable weak granular blocky 35 -50 >50 firm moderate prismatic platy rigid strong massive I hereby coll. 'this work was completed in accordance tit'ith MN 7080 and any local reqs. Rusty Olson's Soil testing 810 _' ner Signature Company License# Soil Observation Log www.ScpticResource.corn vers 12.4 Owner Information Property Owner/project: Wooddale Builders Date 3/7/2015 Property Address/PID: 1 180 Hunter Drive Soil Survey Information ❑ refer to attached soil survey Parent matl's: D Till ❑ Outwash ❑ Lacustrine ❑Alluvium ❑Organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder 0 Side slope ❑Toe slope soil survey map units: L22C2 slope 8-16 % direction- Lineal Soil Log#6 0 Boring ❑ Pit Elevation 1022.6 Depth to SHWT 18" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-4 Topsoil <35 10yr4/2 Loose Loose Single grain 4-1 8 Clay Loam ,,35 10yr5/4 Firm Strong Blocky 18-24 Clay Loam 35 10yr514 Ifly4/8,1-6/l0y Firm Strong t3iock. loose loose <35 single grain friable weak Granular blocky 35 -50 >50 firm moderate prismatic plan rigid strong massive loose loose oose single grain friable weak granular blocky 35 -50 firm moderate prismatic platy %50 rigid Strong massive Comments: Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 10:15 A.M. On 3/08/15 Location: Lot 1 Blk 3 Hole number: 1 Date hole was prepared: 3/07/15 Depth of hole bottom 12"_inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-4" Dark Brown Loam 10yr4/2 4"-12" Brown clay loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/07/15 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 I Time Time Depth Drop in H2O Perc Rate 10:29 10:59 6" 5.5 5.4 11:06 11:36 6" 5.5 5.4 11:37 12:07 6" 5.5 5.4 AVERAGE PERC. RATE 5.4 MPI 1 Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 10:15 A.M. On 3/08/15 Location: Lot 1 Bik 3 Hole number: 2 Date hole was prepared: 3/07/15 Depth of hole bottom_12" inches, Diameter of hole_6" inches. Soil data from test hole: Depth, inches Soil texture 0-4" Dark Brown Loam 10yr4/2 4"-12" Brown clay loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/07/15 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 1 10:30 11:00 6" 4.5 6.6 11:05 11:35 6" 4.4 6.8 11:38 12:08 6" 4.3 7.0 AVERAGE PERC. RATE 6.8 MPI 1 Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 10:15 A.M. On 3/08/15 Location: Lot 1 BIk 3 Hole number: 3 Date hole was prepared: 3/07/15 Depth of hole bottom 12"_ inches, Diameter of hole_6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-4" Dark Brown Loam 10yr412 4"-12" Brown clay loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/07/15 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 I Time Time Depth Drop in H2O Perc Rate 10:31 11:01 6" 4.1 7.3 11:04 11:34 6" 4.0 7.5 11:39 12:09 6" 3.9 7.7 AVERAGE PERC. RATE 7.5 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 10:15 A.M. On 3/08/15 Location: Lot 1 BIk 3 Hole number: 4 Date hole was prepared: 3/07/15 Depth of hole bottom_12"_inches, Diameter of hole_6" inches. Soil data from test hole: Depth, inches Soil texture 0-4" Dark Brown Loam 10yr4/2 4"-12" Brown clay loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/07/15 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 10:32 11:02 6" 3.8 7.9 11:03 11:33 6" 3.6 8.3 11:40 12:10 6" 3.6 8.3 AVERAGE PERC. RATE 8.1 MPI