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Home My WebLink About06-20-2018 Septic Design10 X 63 Rock Bed 2250 Septic Tank 1250 Pump Tank City of Orono Septic Plan Review Reviewer: All work shall be done in full compliance with all appllc&e septic and zoning code. 36 GPM Mln. Pump Joseph Olson D.B.A. 36* TDH Rusty Olson's--Soil and Percolation Testing Joseph J. Olson--MPCA License 9810 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 Fax (763) 498-8290 June 20, 2018 Norton Homes 4350 Lakeview 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 14-28 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. The soils at a depth of 12" have a percolation rate averaging 7 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 7/32 -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 ectuipment 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 be ins. 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 system. 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. Since3P , Joseph J. Olson 4PCtrA •v],v � � IPB lav LOT 5 9691 � � r =&i] 8 — ( BLOC_ OTS S TPTIDN a �' /' \� ' pF p 4 9j PRDioS[-;p ZZ /I �785/ �4•I�� _ ,y SCA I -.F .1-Bi� 66 ` 3190. �l lI 'ill If •9Pd� ,/f `�} / 9688. I I �r.II]g14 1 �✓�.98ri: 1 ire' -9 '�.-JSfu / •59:r7 GRo+++iii-- 9 B ♦ 'F� 1 1 .9i9 546]-� R 7 l� Zeo 66 S8 T p \ r, a4j'vo 6g 9r.r 16. r X69 d P��LOT I Rs 2g / 2011 purple code Mound Design v.^nnw.SepticResource.com (vers 15.2) Property Owner: Norton Homes Date: 6/19/2018 Site Address: 4350 Lakeview Court PID: 0611723430019 Comments: Primary Site instructions: �.J = enter data = adjust if desired = computer calculated - DO NOT CHANGE! 1 f bedroom Type �I 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 1.2 GPD/ftz mound sand loading rate contour loading rake of12 req's a min 62.5 ft. long rockbed v 10.0 Ift rockbed width 63.0 ft rockbed length 7 =ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection Silaterals F61.0feet 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 £t spacing, i* pipe size on line 12, max perfs/lateral = 30 line #8 must be less --, OK 10, 4.0 doses per day (4 minimum) i l r 1 887 gallons per dose (treatment volume) 2.00 5x I2 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement 2.00 3x 145 feet of 2.0 inch supply line leads to F25 gallons of drainback volume El (Tip: "top feed" manifold to control the drainback) I4 213 gallons TOTAL pump out volume (treatment + drainback) Fi 15 feet vertical lift from pump to mound laterals, leads to a: 36 GPM C 27 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 iso 8.4 inch swing on Demand float, or timed dosing ofF'g'qhrs min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design flow) OFF test and adjust as necessary) 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 „) 664 gallons reserve capacity (after High Level Alarm is activated) 0.45 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of2.7 (minimum) (this must match the soil boring log) desired mound ratio 1 2.7 --]percent site slope (0-20% range) 12 (% downslope site slope, if different than upslope) 's =inches, or 1.2 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone containsF—o inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 2(,) 22 inch, or 1.8 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! _ 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 281ft. upslope and sideslope P'70ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: -y) 4:1 upslope ratio lift. ft. upslope berm 3oi 3:1 sideslope ft. sideslope berms 3:1 downslope downslope berm Overall Dimensions: 10.0 1 ft. wide by 63.0 ft. long Rock bed 44 ft. wide by 93 ft. long Mound footprint 4" inspection pipe 18" cover on top Upslope berm =Rl 1� U Downslope berm 24 12" cover on sides (6 " loamy cap & 6" topsoil) 1.8 11 Clean sand lift 1.2 — Depth to Limiting limiting Condition —`------- — — AbsorDtion 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. i Rock Bed: 10.0 ft. by 63.0 ft. by ®inches under pipe, plus 20% gives 21 yd' or'1.4= 29 tan ;. ) Mound Sand: (note: volume is based on 3:1 /4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 34.1 up + 122.9 downslope + 18.1 ends + F56.8under rock = 278 yd' or "1.4= 390 ton plus 20% _ Loamy Cap: 40 ft. by 89 ft. 6" deep, plus 20% gives ,c,: Topsoil: 44 ft. by 93 ft. 6" deep, plus 20% gives I hereby certify that I have gnature work in accordance with all 80 yd' or "1.4= =ton =Yd' or *1.4= 127 ton ordinances, rules and laws. Rusty Olson"s Soil Ft Perc 810 Company License# 6/19/M1R .QLC Installer Summary 2250 gallon Septic tank (minimum) Tank options: none DU70 rdrwger rank.. worn muurpre wrnpi rdnres 1250 gallon Dose tank (minimum) at 25.49 gpi 3GPM 27 ft. of head, Pump required 6 8.4 1 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 Ithours OFF time 20 inches from bottom of tank to "pump ON" float, or12 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 145 ft. of =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 a 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 10 ft. upslope berm HildownsLope sideslope 15 ft. sideslope berms L24 jft. downslope berm 4" inspection pipe 18" cover on top berm 10 .IT 1� V Downslope bene 24 12" cover on sides (6" loaray cap & 6" topsoil) 1.8 I I Clean sand lift _ 1.2 Depth to Limiting L InIng Condition i ------------ Absorption Width 27.0 ---- ---ti-- ---- -- — Note: _ For 0 to 1 slopes, Absorption Width is measured from the Bedequally in .both directions. For slopes a1%, Absorption Width is measured downhill from the upslope edge of the &-d. Rock Bed: 21.0 yd or *1.4= 29 ton 6 inches under pipe Mound Sand: 278 yd or *1.4= 390 ton calculation based on 3:1/4:1 slope from top of rackbe. Loamy Cap: 80 yd3 or *1.4= 112 ton 6" deep Topsoil: 91 yd or *1,4= 127 ton 6" deep INSPECTOR CHECKLIST - mound 4J5U Lakeview Court 11 ILL 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 Et 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 Et 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 Et alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1250 gallons 9 dose pump 36 gpm 27 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 213.0 gat 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 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 7/32 inch perforations 3.0 ft perforation spacing 17.0 downslope 15 sideslope 24 downslope 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 monitoring plan and type welt abandonment form - if necessary =Re -use existing tank certification lo! --A� 'W -1 �m / � ƒ o a § $ �2 � 6 t \ 0 m 41 5 / u - � LU / 000-0 E ( \ k E � / @ ° �Jf V)7 2 lo! --A� 'W -1 �m / � � � � § DIle ƒ o § $ _\ \ / 41 % - � | � 1 t E | / a - � � � � � § e ƒ o § ± _\ \ � 41 ± � | a 1 t f / � CL | � � � � � § § e ƒ o § ± _\ \ � 41 � | § e ƒ o § ± _\ \ 41 Loas of Soil Borings License #810 Location or Project: Lot 5, Blk 3 Borings made by: Rusty Olson's Soil and Perc testing 1 2/312 01 3 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 981.9_ Mottled Soil at_1.8_feet 0"-8" Dark brown loam 10yr3/2 H2O present at –X– W-16" Brown loam 10yr4/4 16"-22" Brown loam 10yr5/4 22"-28" Rusty brown sandy loam 10yr5/3 Boring Number _2_ Surface elevation 981.8_ Mottled Soil at 2.3 feet 0"-6" Dark brown loam 10yr4/2 H2O present at _X 6"-28" Brown loam 10yr5/4 28"-34" Rusty brown loam 10yr5/4 Boring Number _3_ Surface elevation 976.0_ Mottled Soil at _20 feet 0"-8" Dark brown loam 10yr4/2 H2O present at —X- 8"-24" Brown loam 10yr4/4 24"-30" Rusty brown loam to clay loam 10yr5/4 Boring Number -4— Surface elevation 976.1_ Mottled Soil at 1.7 feet T-6" Dark brown foam 10yr4/2 H2O present at —X— T-20" Brown loam 10yr5/4 20"-30" Rusty brown loam 10yr5/4 Boring Number -5— Surface elevation 979.3_ Mottled Soil at _1.3_ feet 0"-6" Dark brown loam 10yr3/2 H2O present at T-16" Brown sandy loam 10yr4/4 —X— 16"-24" Rusty brown loam 10yr5/4 Boring Number 6_ Surface elevation 974.1_ Mottled Soil at 1.5 feet 0-8" Dark brown loam 10yr4/2 H2O present at 8"-18" Brown loam 10yr514 —X- 18"-24" Rusty brown loam 10yr5/4 Soil Observation Log uwvwv.SepticResource.com vers 12.4 Owner Information Property Owner / project: Norton Homes Date 6/16/2018 Property Address / PID: 3450 Lakeview Court Soil Survey Information ❑ refer to attached soil survey Parent matl's: Till ❑ Outwvash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ summit ❑ Shoulder 0 Side slope ❑ Toe slope soil survey map units: 141 C2 slope % direction- Convex Soil Log #7 0 Boring ❑ Pit Elevation 981.8 Depth to SHWT 14 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 1Oyr4/2 Loose Moderate Blockv 6-14 Clay Loam <35 16yr5/4 Friable Strong Blocky 14-20 ClayLoam <35 1Oyr5/4 I Oy4/8,1-6/1 Oy Friable Strong Blocky 20-24 Clay Loam <35 2.5y5/3 IOy4/8,1-6/IOy Firm strong Block% <35 loose loose single grain 35 -50 friable weak granular block% >50 firth moderate Prismatic platy rigid strong massive Comments: 3450 Lakeview Court Soil Log #8 21 Boring ❑ pit Elevation 981.8 Depth to SHWT 14 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Loose Moderate Blocky 6-14 Clay Loam <35 I Oyr5/4 Friable Strong Block, 1-1-18 Clay Learn 35 10yr5/4 IOy4/8,1-6/10y Friable Strong Blocky 18-24 Clay Loam, <35 2.5y5/3 I Oy4/8.1-6/1 Oy Firm Strong BlockN Soil Log 43 ❑ Boring ❑ Pit Elevation Depth to SHWT Depth (in) Texture fragment % matrix color redox color consistence grade shape <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic plate rigid strong massive <35 loose loose single grain 35 - 50 friable weak granular blocky >- firn moderate prismatic platy rigid strong massive <35 loose loose single grain 35-50 friable weak granular block} >50 firm moderate prismatic plate 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 tins work was completed in accordance with MN 7080 and any local red's. Rusty Olson's Soil & Perc. 810 Designer Signature Company License # Percolation Test Data Sheet LicI810 Percolating test readings made by: Rusty Olson's Perc. starting at 8:59 A.M. On 12/03/13 Location: Lot 5, Blk 3 Hale number: 1 Date hole was prepared Depth of hole bottom _ Soil data from test hole: Depth, inches 0-6'° 6"-12" 12/02113 12"—inches, Diameter of hole 6'° inches. Soil texture Dark Brown Loam 10yr4/2 Brown Loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 12/02/13 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 Pere Rate 9:09 9:39 6" 4.2 7.1 9:46 10:16 6" 4.0 7.5 10:17 10:47 6" 3.8 7.9 AVERAGE PERC. RATE 7.5 MPI Percolation Test Data Sheet Lic.#81 D Percolating test readings made by: Rusty Olson's Perc. starting at 8:59 A.M. On 12/03/13 Location: Lot 5, Blk 3 Hole number: 2 Date hole was prepared: 12/02/13 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 10yr4/2 6"-12" Brown Loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 12/02/13 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 9:10 9:40 6" 3.7 8.1 9:45 10:15 6" 3.6 8.3 10:18 10:48 6" 3.6 8.3 AVERAGE PERG. RATE 8.2 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 8:59 A.M. On 12/03/13 Location: Lot 5, Blk 3 Hole number: 3 Date hole was prepared: 12/02/13 Depth of hole bottom ,12"_ inches, Diameter of hole _6"— inches. Soil data from test hole: Depth, inches Soil texture 0-61" Dark Brown Loam 10yr4/2 6"'-12" Brown Loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 12/02/13 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 9:11 9:41 6" 5.5 5.4 9:44 10:14 6" 5.5 5.4 10:19 10:49 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 8:59 A.M. On 12/03113 Location: Lot 5, Hlk 3 Hole number: 4 Date hole was prepared: 12/02/13 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 10yr4/2 6"-12" Brown Loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 12/02/13 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 9:12 9:42 6" 3.8 7.9 9:43 10:13 6" 3.6 8.3 10:20 10:50 6" 3.6 8.3 AVERAGE PERC. RATE 8.1 MPI