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HomeMy WebLinkAboutSoil and Percolation Testing - Onsite sewage treatment system ct OC a' 9 /�a�.�.� �rt�y Gh I`NB t e I-c_rct/ vt. a �� p �' �e� ( 7 ��17 URIGNO 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 12,2017 NOR-SON 540 Willow Drive S. Orono, Hennepin County This on-site Sewage Treatment System is designed for a Type I five-bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The periodically saturated soils were located at 18-28 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 All neighboring wells are greater than 100' from proposed treatment areas. The soils at a depth of 12"have a percolation rate averaging 8 MPI. A 2250 combination septic tank needs to be installed. All new tanks need to be insulated if there is less than two feet of cover over the top of the tanks.Clean outs must be installed on the end of the laterals for maintenance. A 1300 gallon pumping chamber will need to be installed to lift the effluent to the treatment area.The power supply and switches must be located outside the manhole and pumping chamber in a weatherproof enclosure.A warning device must be installed with light and sound devices;this is in case of a pump failure.A flow measurement device must be installed. Including but not limited to a water meter,event counter,cunning time clocks or electronically controlled dosing. Nothing other than arav water.(laundry showers etc ) Human �tiater and toilet titicue should be disposed of into the septic tanks.Garbage disposals are not recommended Additi%es mint riot he used:they may cause harmful damage to your septic system It is recommended that N oil nu nip the tank every year for 1 septic tank,eyery two years for two septic tanks Sincerely, Joseph J.Olson WILLOW DRIVE _QOI'TH r FIR •p 71 sr .P i T , . t � Z r _ ,r 8� 4. �� __._ fir'►_... 1-4 SLAa %7. 77 _ yl.,tj _srrr�m�..t�1aaE..tt�rR 14 Xkw .�ic[�x.l�trtstsr --FAUc ! %MW Ai Avg sc e-41 a to IPA" 13w low WK 4"Ambar 'CA* ocaw. 6�tts 6,ks SOIL BORING ELEVATIOMS MOUND SYSTEM DF_SICN T1 lirI El..•97?•� tYPe-L -:C-Bedroom,Average percolation rate TKVI EL- v.gaVday L12— sq_ft of treatment area�.jp_y10 ft. wift_�3 ft_ length anted area f3ytctOM MUSt bp; TH-#4 El-' 3 ..:'ftm prowayr 1intx *5 EL.- .y Side slope run�4_to 2 x 3!' ,eight Ott Was 46 EL-17�` g ft-x S`? ft. lawn area. JAL 1f(CM bldgs, Clean rock needed plus 2 �1 �cu_ Tmllt 10111 area ' `kom Wn,•,�# frig yds.Coarse washed sanr �c�,Yds Air sand depth I• Tf�Oidment suety from P�0 Sandy loam -3� cu_yds.,Topsoil 6-_, SV cYt_yds.plus 5495_ D� cu.Yds. � •`„U"twm wells �„'1`iOt7Y#1dcr� Humbe!►of tanks L_-,lu tank A Y-�PK,7'tanka< gals., Pwnp chamber capacity Dais_ 1?,_ gad./100 1ineai feet of�_`dia.Supply fH�dPERTY�QF- PpiY Rifle lineal Beet needed Dit:ribution pipe Ja`., -_(�f3_ lineal feet,�,f 3^ dia.Perforations �(i a Float set at_ gal-.- -times per day pump curve?C#--_/mm.31_feet head pressure. Daft:L& IZ Ph. 763.498-8779 2011 purple code Mound Design www SepticResource.com (vers 15.2) Property Owner: NOR-SON Date: 1/12/2017 Site Address: 540 Willow Drive S. PID: 0311723320018 Comments: instructions: = =enter data = adjust if desired = computer calculated - DO NOT CHANGE! bedroom Type Residential System 750 GPD design flow 31 Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks 41 2250 Gat 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 =req's a min 62.5 ft. long rockbed n. 10.0 ft rockbed width 62.5 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 60.5 feet long 21.0 perfs / lateral 63 perfs total (1/2 a perf means the first perf starts at the middle feed manifold) U) 7/32 inch perfs at feet residual head gives 0.56 gpm flow rate per perforation for this pert size & spacing, £t pipe size on tine 12, max perfs/lateral = 30 tine#8 must be less > OK 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 1.3) 150 feet of 2.0 inch supply line leads to26 gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14 214 gallons TOTAL pump out volume (treatment+ drainback) i1 21 Ifeet vertical lift from pump to mound laterals, leads to a: in 36 GPM @ 33 feet of head, Pump requirement (note: >50gpm may require an extra 3-6'of head) n 750 gal Dose tank (code minimum) 1300 gal Dose tank (design size / LUG req'd) at 25.49 gpi leads to a 181 8.4 inch swing on Demand float, or timed dosing of 5. min ON (confirm pump rate with drawdown (this delivers Average flow, =70%of Peak design flow)19�1 hrs OFF test and adjust as necessary) iy) 12 inches from bottom of tank to"Pump OFF"float 10 20 inches from bottom of tank to "Pump ON"float, or 12 inches to'Timer ON"float if time dosed 21 23 inches from bottom of tank to"Hi Level"float, or [:33 inches to"Hi Level"float if time dosed 22, 714 gallons reserve capacity (after High Level Alarm is activated) 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 2.7 241 percent site slope (0-20% range) 10 (%downslope site slope, if different than upslope) 2il inches, or 1.5 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains=0 inches of 0%soil credit, and =inches of 50%soil credit. Giving a: 26) 18 inch, or 1.5 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 sidestope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 29) 3:1 upslope ratio 12 ft. upslope berm 30) 3:1 sidestope 12 ft. sidestope berms 31) 3:1 downslope 20 ft. downslope berm 32) Overall Dimensions: 10.0 ft. wide by 62.5 ft. tong Rock bed 42 ft. wide by 87 ft. long Mound footprint 4" inspection pipe 18" cover on top U sloe berm 12 Downsto a berm 20 12" cover on sides (6"loamy cap&b"topsoil) 1.5 Clean sand lift 1.5 Depth to Li7niting Absorption Width F 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 downhiIt from the upslope edge of the Bed. 33) Rock Bed: 10.0 ft. by 62.5 ft. by ©inches under pipe, plus 20%gives 21 yd'or"1.4= F 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) 25.0 up + 53.8 downslope + 9.3 ends + 39.4 under rock = 153 yd'or"1.4= 214 ton plus 20% 35) Loamy Cap: 38 ft. by 83 ft. 6"deep, plus 20%gives 70 yd'or"1.4= 98 ton 36) Topsoil: 42 ft. by 87 ft. 6" deep, plus 20%gives 81 yd'or"1.4= 113 ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty olson's Soil l* Perc 810 1/12/2017 igner Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none :Mb urger ldr1K WILH ITIUMPLe LUMP/ldnKS 1300 gallon Dose tank (minimum) at 25.49 gpi 36 IGPM @ 33 ft. of head, Pump required 8.4 inch swing on Demand float which translates to roughly 5.2 inches of float tether length if time dosing is required --> 5.9 minutes ON time Et =hours OFF time 20 inches from bottom of tank to"pump ON"float, or 12 inches to"timer ON"float 23 inches from bottom of tank to"Hi Level Alarm"or E33 inches to "Hi level alarm" if time dosed 150 ft. of 2.0 inch supply tine 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 62.5 ft. long Rock bed 3 laterals 2.00 inch diameter 60.5 Ift. long 3.0 ft. lateral spacing 7/32 inch perfs 3.0 ft. perforation spacing No jEffluent 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: 3:t upslope ratio 12 ft. upslope berm 3:1 sideslope sideslope berms 3:1 downslope H2O ft. downslope berm 4" inspection pipe 18" cover on top U slo berm 12 Downslope berm 20 12" cover on sides (6"loamy cap&6"topsoil) 1.5 Clean sand lift 1.5 Depth to Limiting Limiting Conditio, _ 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 yd or*1.4= 29 ton 6 inches under pipe Mound Sand: 153 yd3 or*1.4= 214 ton calculation based on 3:1/4:1 slope from top of rockbe. Loamy Cap: 70 yd or*1.4= 98 ton 6"deep Topsoil: 81 yd or*1.4= 113 ton 6"deep INSPECTOR CHECKLIST - mound 54U wlttow Urtve �. 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 £r bounds: out of road easement, or outer ditch. LAKE 131-111: setback: 20'for bluff. Lakes: GD_, RD_, NE_. Protected wetland _. Building setbacks: 10'for everything, 20'for dispersal area. N'ATF:R LINE under pressure si 10'to bed,tank Et sewer line. (else sewer line > 12" below) Sewer line & baffle connection (no 90's, T between 45's, slope min 1" in 8', max 2"in 8') (no depth reqs, 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 8 alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) Mfg 1300 gallons dose pump 36 gpm 33 head VERIFY PUMP CURVE 5.9 min ON 9 hr OFF float setting drop 8.4 inches at 25.5 gpi "DESIGNED" 5.2 inches approx float tether length 214.0 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 62.5 Sand lift depth 18 inches. (Jar test : 2"sand leaves < 1/8"silt after 30 min) Absorption Sand beyond rock 0.0 upstope 17.0 downslope Bermed topsoil beyond rockbed 12 upstope 12 sidestope 20 downslope cover depth of 12-18"+ VERIFY 3 laterals (1-2'from edge of rock) 2.00 inch pipe size (Sch40 pipe ti fittings) 3.0 ft lateral spacing 8 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 System Elevations wu� w.uey } benchmark / - SHWT Mound r (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 upstope rock bed) SHWT (at up%lope rock bed) y r 1 1 r 1 Sewer pipe exiting house Septic Tank Septic Tank (ir applicable) Pump Tank Grade Grade Grade Grade Pipe inlet inlet inlet Tank bottom Tank bottom Tank bottom Soil Observation Log %%w%%.SepticResource.com%ers 12.4 Owner Information Property Owner/project: Edge Moor 11 LLC Date 3/18/2016 Property Address PID: 540 Willow Drive S Soil Surve ' Information ❑ refer to attached soil survey Parent matl's: Q Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: [] Summit [] Shoulder ❑ Side slope ❑ Toe slope soil survey map units: L22D2-L36A slope 4-10 °% direction- Linear Soil Log#1 E] Boring ❑ Pit Elevation 977.5 Depth to SHWT 18" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-8 Topsoil <35 10yT3/2 Loose Loose Single grain 8-14 Clay Loam <35 10yT4/3 Friable Strong Blocky 14-18 Clay Loam <35 10yr5'4 Friable Strong Block> 18-30 Clay Loam <35 10yr5/4 10y41,1-6%IOy Firm Strong Prismatic <35 loose loose single grain 35 -50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive Comments: 540 Willow Drive S Soil Log#2 E Boring ❑ Pit Elevation 977.5 Depth to SHWT 26" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr3%2 Loose Loose Single grain 6-14 Loam <35 I OyT4J4 Friable Strong Blocky 14-26 Loam <35 10NT164 Friable Strong Blocky 26-30 Loam <35 IOyr6 4 10y4%8.1-6r10y Firm Strong Prismatic 540 Willow Drive S Soil Log#3 ❑ Boring ❑ Pit Elevation 963.3 Depth to SHWT 28" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-14 Sandy Loam <35 10yr4!2 Loose Loose Single grain 14-18 Loam <35 IOyW2 Loose Strong Blocky 18-28 Clay Loam <35 I Oyr5 4 Friable Strong Blocky 28-36 Clay Loam <35 10NT5,4 ION 4'8.1-6'10y Firm Strong Prismatic <35 loose loose single grain 35 -50 friable weak granular blocky >50 firm moderate prismatic platy rigid I strong massive /hereby certifi,this work was completed in accordance with AIN 7080 and anp local reqs. Rusty Olson's Soil & Perc. 810 igner Signature Company License# 540 Willow Drive S Soil Log#4 Boring Pit Elevation 963.3 Depth to SHWT 28" Depth (in) Texture fragment°io matrix color redox color consistence grade shape 0-14 Sandy Loam 1 Oyr4/2 Loose Loose Single grain 14-18 Loam IOyr4/2 Loose Strom, lfloc6\ 18-28 Clay Loam IOyr5/4 friable Strong Iflo,:k\ 28-36 Clay Loam <35 IOyr5/4 10\4/8,1-6/1Oy Firm Strong Prismatic <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid Istrong, I massive 5.10 Wil1mv Drive S Soil Log 45 Boring Pit Elevation 965.4 Depth to SHWT 24" Depth (in) l e\ture fragment°o matrix color redo\ color consistence ,rade shape 0-18 l opsoil eroded I Oyr4/2 Loose Loose Single grain 18-24 Loam �35 I O\r', Friable Strong Mockv <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 <35 loose loose single grain 35.50 friable weak granular block% >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 signer Signature Company License 4 Soil Observation Log %%%%%%.SepticResource.com %crs 12.4 OH,ner Information Property Owner project: Edge Moor II LLC Date 3/18/2016 Property Address PID: 540 Willow Drive S Soil Suney Information ❑ refer to attached soil survey Parent matl's: Q Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ Summit Q Shoulder ❑ Side slope ❑ Toe slope soil survey map units: L22D2-L36A slope 4-10 % direction- Linear Soil Log#6 Boring ❑ Pit Elevation 975.6 Depth to SHWT 26" Depth(in) Texture fragment% matrix color redox color consistence grade shape 0-6 Topsoil <35 1 Ovr3/2 Loose Loose single grain 6-14 Loam <35 10yr414 Friable Strong Blocky 14-26 Loam <35 1Oyr6i4 Friable Strong Blocky 26-30 Loam <35 10yr6,14 I Oy4/8,1-6/I Oy Firm Strong Prismatic <35 loose loose single grain 35 -50 friable weak granular blocky >50 firm moderate prismatic plate rigid strong massive Comments: Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:15 A.M. On 3/19/16 Location: 540 Willow Drive S. Hole number: 1 Date hole was prepared: 3118/16 Depth of hole bottom _12"_inches, Diameter of hole_6"_inches. Soil data from test hole: Depth, inches Soil texture 0-8 Dark Brown Loam 10yr3/2 8-12 Brown clay loam 10yr4/3 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/18116 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 9:30 10:00 6" 2.8 10.7 10:07 10:37 6" 2.7 11.1 10:38 11:08 6" 2.6 11.5 AVERAGE PERC. RATE 11.1 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:15 A.M. On 3/19/16 Location: 540 Willow Drive S. Hole number: 2 Date hole was prepared: 3/18/16 Depth of hole bottom_12"_inches, Diameter of hole_6"_inches. Soil data from test hole: Depth, inches Soil texture 0-6 Dark Brown Loam 10yr3/2 6-12 Brown loam 10yr4/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches.- Date nches:Date of initial water filling 3/18/16 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 9:31 10:01 6" 3.6 8.3 10:06 10:36 6" 3.5 8.5 10:39 11:09 6" 3.4 8.8 AVERAGE PERC. RATE 8.5 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:15 A.M. On 3/19/16 Location: 540 Willow Drive S. Hole number: 3 Date hole was prepared: 3/18/16 Depth of hole bottom_12"_inches, Diameter of hole_6"_inches. Soil data from test hole: Depth, inches Soil texture 0-12 Dark Brown sandy Loam 10yr4/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches.- Date nches:Date of initial water filling 3/18/16 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 9:32 10:02 6" 5.5 5.4 10:05 10:35 6" 5.5 5.4 10:40 11:10 6" 5.5 5.4 AVERAGE PERC. RATE 5.4 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:15 A.M. On 3/19/16 Location: 540 Willow Drive S. Hole number: 4 Date hole was prepared: 3/18/16 Depth of hole bottom_12"_inches, Diameter of hole_6"_inches. Soil data from test hole: Depth, inches Soil texture 0-12 Dark Brown sandy Loam 10yr4/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches.- Date nches:Date of initial water filling 3/18/16 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 9:33 10:03 6" 5.5 5.4 10:04 10:34 6" 5.5 5.4 10:41 11:11 6" 5.5 5.4 AVERAGE PERC. RATE 5.4 MPI