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Home My WebLink About05-29-2019 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) 498-82 May 24, 2019 Norton Homes 690 Pinehurst Court 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 16-26 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 future site is dual rock beds using gate valves for unlevel pressure distribution. All neighboring wells are greater than 100' from proposed treatment areas. The soils at a depth of 12" have a percolation rate averaging 13 MPI. A 2250 -gallon combination septic tank or its equivalent 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 1250 -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. 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. Iron filters cannot go into the system. 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 r BB r�r, d C1 C- N00°22'58'E 261.04 20117 � w 970.0 I -e / b I ` 9L / + 7 o'' d \ wf \ ,• • ---476— —L '------------------ - - 1 95o ' 9605= Ire J2'YA tz �N �C7 it r �'la ry a I ol _ r er �B----------- _ 1 � �w .r • _ • � m 49.05 N01°55'10"E 22&07 b • 1 e ,I 2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: Norton Homes Date: 5/29/2019 Site Address: 690 Pinehurst Court. PID: 0611723330014 Comments: instructions: = = enter data = adjust if desired = computer calculated - DO NOT CHANGE! t) bedroom Type 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 =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 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) 4) 7132 inch perfs at feet residual head gives 4.56 gpm flow rate per perforation for this perf size Et spacing, Et pipe size on line 12, max perfs/lateral = 34 ,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) 93 feet of 2.0 inch supply line leads to EEgallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 204 gallons TOTAL pump out volume (treatment + drainback) 15) 1 14 Ifeet vertical lift from pump to mound laterals, leads to a: 16) 1 36 GPM @ 23 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) 8.0 inch swing on Demand float, or timed dosing of5.7 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design flow)Mhrs OFF test and adjust as necessary) 19)11inches inches from bottom of tank to "Pump OFF" float 20) inches from bottom of tank to "Pump ON" float, orF33q 1inches to "Timer ON" float if time dosed 21) 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 log) desired mound ratio 1 2.7 4) percent site slope (0-20% range) (% downslope site slope, if different than upslope) s) 20 inches, or 1.7 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains El inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 6) 16 inch, or 1.3 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 7) 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) B) 0.0 ft. upslope and sideslope 17.0 ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: upslope ratio 10 ft. upslope berm D) 3;1 sideslope 12 ft. sideslope berms i) 4:1 downslope 22 ft. downslope berm s) Overall Dimensions: 10.0 ft. wide by 63.0 ft. long Rock bed 42 ft. wide by 187 ft. long Mound footprint 4" inspection pipe 18" cover on top berm 10 .l b Downslope berm F 22 .-12" cover on sides (6" losmy cap & 6" topsoil) 1.3 Ctean sand lift 1.7 _ Depth to Limiting tiTmiting CQndittQn----------.--- __ 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: 10.0 ft. by 63.0 ft. by inches under pipe, plus 20% gives 21 yd' or *1.4= 29 ton Mound Sand: (note: volume is based on 3:114:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 24.9 up + 74.8 downslope + 10.Z ends + 39.3 under rock =179 yds or *1.4= F251 ton plus 20% Loamy Cap: 38 ft. by 83 ft. 6" deep, plus 20% gives Topsoil: 42 ft. by 87 ft. 6" deep, plus 20% gives I hereby certify that I have completed this work in acco esigner Signature Rusty Olson"s Soil ft Perc Company 71 yd' or *1.4= 99 ton 82 yd' or *1.4= 115 ton with all applicable ordinances, rules and laws. ucenseff 5/29/2(119 va[e Installer Summary 2250 gallon Septic tank (minimum) Tank options: none aUk Ldlger Ld11K WILn MULLlple curllp! Lan KS 125b gallon Dose tank (minimum) at LEO 36 GPM23 ft. of head, Pump required 8.0 inch swing on Demand float which translates to roughly 5.0 inches of float tether length if time dosing is required - ,5.7 minutes ON time & hours OFF time 20 inches from bottom of tank to "pump ON" float, or LL12 dinches to "timer ON" float 23 inches from bottom of tank to "Hi Level Alarm" or 1 33 1 inches to "Hi level alarm" if time dosed 93 ft. of 2.0 inch supply line withend feed manifold connection (Tip: "top feed" manifold to control drainback) 16 inch, or 1.3 ft. Sand Lift Mound 10.0 ft, wide by 63.0 ft. long Rock bed 3 laterals 2.00 inch diameter =ft. long 3.0 ft. lateral spacing 7132 inch perfs 3.0 ft. perforation spacing No Effluent filter ft alarm 3 clean out ft valve box assemblies 27,0 ft.Total sand ABSORPTION width (minimum) 0.0 Tt. 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: 4:9 upslope ratio 10 ft. upslope berm 3:1 sideslope 12 ft. sideslope berms 4:1 downslope 22 ft. downslope berm 4" inspection pipe 18" cover on top Upslope berm =--,, 1� L. Downsloae berm 2z 12" cover on sides (6" loamy cap & 6" topsoil) 1.3 11 Clean sand lift 1.7 r _ — pth to Limiting Limiting Condition Absorption Width 27.0 —� _--_—__ Note: For 0 to 1% slopes, Absorptian Width is measured from the Bedequally in both directions. For slopes >1%, Absorption Width is measured downhill from the upslope edge of the Berl Rock Bed: 21.0 yd or *1.4= 29 ton Mound Sand: 179 yd or *1.4= 251 ton Loamy Cap: 71 yd or *1.4= 99 ton Topsoil: 82 yd or *1.4= 115 ton 6 inches under pipe calculation based on 3:1/4:1 slope from top of rockbe 6" deep 6" deep INSPECTOR CHECKLIST - mound 69U Pinehurst Court 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 a 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 st 10' to bed,tank ft sewer line. (else sewer line > 12" below) 7 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 Et alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1250 gallons 0 dose pump 36 gpm 23 head VERIFY PUMP CURVE 5.7 min ON 9 hr OFF float setting drop 8.0 inches at 25.5 gpi "DESIGNED" 5.0 inches approx float tether length 204.0 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 16 inches. (Jar test : 2" sand leaves < 1/8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope Bermed topsoil beyond rockbed 10 upslope 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 17.0 downslope 12 sideslope 22 downslope Air inlet at end of laterals, and at top feed manifold if necessary. clean outs (no hard 90's) 4" inspection pipe to bottom of rock, anchored VERIFY Abandon existing system - if necessary monitoring plan and type well abandonment form - if necessary VERIFY �Re-use existing tank certification � � § ]F;;:�: � � a + 2 ± / � m m t � � � | m w 0 . � �' 2 % 7 m § 0 E / C § m 2 0 2 � � § ]F;;:�: § 0 � � M % � + ± / � m t � � � | m w u § 0 � � M % L / | � L Logs of Soil Borings License #810 Location or Project: Lot 15, Blk 1 Borings made by: Rusty Olson`s Soil and Perc testing 6/1/2014 Classification System: AASHO ; USDS• USDS-SCS X Unified ; Other Auger used (check two): Hand —X_, or Power , Flight, Bucket or Probe X Boring Number _1_ Surface elevation 973.6 Mottled Soil at_1.3_feet 0"-8" Dark brown loam 10yr3/2 H2O present at —X- 8"-16" Brown loam 10yr4/4 16"-24" Rusty brown loam 10yr5/3 Boring Number _2_ Surface elevation 973.6_ Mottled Soil at 1.5 feet 0""-8" Dark brown loam 10yr3/2 H2O present at _X 8"-18" Brown loam 10yr4/4 18"-24" Rusty brown loam 10yr5/4 Boring Number _3_ Surface elevation 975.1 Mottled Soil at _1.8 feet 0"-8" Dark brown loam 10yr3/2 H2O present at —X- 8"-16" Brown loam 10yr4/4 16"-22" Brown loam 10yr5/4 22"-26" Rusty brown loam 10yr5/4 Boring Number 4_ Surface elevation 975.1 Mottled Soil at _1.8_ feet 0"-8" Dark brown loam 10yr3/2 H2O present at —X_ 8"-22" Brown loam 10yr4/4 22"-28" Rusty brown loam 10yr5/3 Boring Number —5 _ Surface elevation ^972.3 Mottled Soil at 1.7 feet W-8"" Dark brown loam 10yr3/2 H2O present at X_ 8"-14" Brown loam 10yr4/4 14"-20"° Brown loam 10yr5/4 20"-26" Rusty brown loam 10yr5/4 Boring Number 6 — Surface elevation 973.8 Mottled Soil at 2.1 feet 0""-12" Dark brown loam 10yr3/2 H2O present at 12"-26" Brown loam 10yr4/4 _X� 26"-32" Rusty brown loam 10yr5/4 Soil Observation Log www.SepticResource.com vers 12.4 Owner Information Property Owner / project: Norton Homes Date 5/28/2019 Property Address / PID: 690 Pinehurst Court Soil Survey Information ❑ refer to attached soil survey Parent mat's: ❑ Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder 0 Side slope ❑ Toe slope soil survey map units: L41C2 slope 7-11 % direction- Linear Soil Log #7 Q Boring ❑ Pit Elevation 966.4 Depth to SHWT 24 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-18 Topsoil <35 10yr3/ l Friable Moderate Blocky 18-24 Clay Loam <=35 2.5y4/3 Friable Strong Block, 24-30 Clay Loam <35 2.5y5/3 10y4/8,1-6/1Oy Firm Strong Blocky X35 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; 690 Pinehurst Court Soil Log #8 0 Boring ❑ pit Elevation 966.4 Depth to SHWT 20 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 Topsoil <35 10yr3/I Friable Moderate Blocky t2-20 Clay Loam <35 2.5y4/3 Friable Strona Blocky 20-26 Clay Loam <35 2.5y5/4 10y4/8,1 -6/10y Firm Strong stocky <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 I strong massive 690 Pinehurst Court Soil Log #9 E] Boring ❑ pit Elevation 964.3 Depth to SHWT 24 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-18 Topsoil <35 10yr3/1 Friable Moderate stocky 18-24 Clay Loam <35 2.5y4/3 Friable Strong stocky 24-30 Clay Loam <35 2.5y5/3 10y4/8,1 -6/10y Finn 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 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid I strong I massive I hereby certify this work was completed in accordance with AM 7080 and any local reqs. 'O�Z' Rusty Olson's Soil & Perc 810 signer Signature Company License # Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 2:39 P.M. On 7/02114 Location: Lot 15, Blk I Hole number: 1 Date hole was prepared 7101114 Depth of hole bottom —12 inches, Diameter of hole —6"_ inches. Soil data from test hole: Depth, inches 0-8" 8"-12" Soil texture Dark brown loam 10yr3/2 Brown loam 10yr414 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 I Mme i ime Depth Drop in H2O Perc Rate 2:52 3:07 6" 0.8 18.7 3:14 3:29 6" 0.8 18.7 3:30 3:45 6" 0.8 18.7 AVERAGE PERC. RATE 18.7 Allyl Percolation Test Data Sheet Lic.#810 Percolating test readings made by. Rusty Olson's Perc. starting at 2:39 P.M. On 7102/14 Location: Lot 15, Blk 1 Hole number: 2 Date hole was prepared 7/01/14 Depth of hole bottom _12 inches, Diameter of hole r6"_ inches. Soil data from test hole: Depth, inches 0_81P 8N_1 F? Soil texture Dark brown loam 1 Oyr3/2 Brown loam 10yr414 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/01114 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 2:53 3:08 6" - 1.0 15.0 3:13 3:28 6" 1.0 15.0 3:31 3:46 6" 1.0 15.0 AVERAGE PERG. RATE 15.0 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 2:39 P.M. On 7102114 Location: Lot 15, Blk 1 Hale number: 3 Date hole was prepared 7101114 Depth of hole bottom _12"� inches, Diameter of hole `6" inches. Soil data from test hole: Depth, inches 0-8" 8""-12" Soil texture Dark brown loam 10yr3/2 Brown loam 10yr4/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: 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 2:54 3:09 6" 1.5 10.0 3:12 3:27 6" 1.5 10.0 3:32 3:47 6" 1.5 10.0 AVERAGE PERC. RATE 10.0 MPI Percolation Test Data Sheet Llc.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 2:39 P.M. On 7/02/14 Location: Lot 15, Blk 1 Hole number: 4 Date hole was prepared 7/01/14 Depth of hole bottom —12 inches, Diameter of hole _6"— inches. Soil data from test hole: Depth, inches 0_811 8"-12" Soil texture Dark brown loam 10yr3/2 Brown loam 10yr4/4 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 Time Time Death Drop in H2O Perc Rate 2:55 3:10 6" 1.7 8.8 3:11 3:26 6" 1.7 $.8 3:33 3:48 6" 1.7 8.8 AVERAGE PERC. RATE 8.8 MIDI