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Home My WebLink About03-28-2019 Septic DesignJoseph Olson D.B.A. 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 Revised March 28, 2019 Swanson Homes 4315 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 14-24 inches (mottled soil). Due to the periodically saturated soils, a pressurized mound system with b inches of rock will need to be installed to treat the septic effluent. The bottom of the treatment area must be located at least T 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 12.5 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 7132- inch perforations on the laterals. 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. The manifold and supply line must have back drainage to the pumping chamber. Keen 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. 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. Sincerely, Joseph J. Olson \ SO \\ q7 974.k x 9 x9:5./l 9 973.5 - o0 °=as"zl lo,, 77,-"2,4'9 2. � � \ 982 4 3 � 982 9 x -16.2 r -984,8 j 965,6 tI"98 .9, 11.8 ea.2 y �\ \p \� \\ 97 97 T� '\ \ SCAL8 f- 50 " 3 x983.0 98LB x902 i z x11980.9 983,1 882,9 p syr, -P 969. 1 \ x9J1a \ 97711' LST&y 902,4 9 7.5 'o o .,A cap- ♦ 482.3 y j I 1 7:+� k.. tiy. /sO,' 93s \,sa.� g9�ry56B!` N0 979.0 0 ! ISI 981.3 960.3 Y 5 I� xb. "91a.i r7,�� 10 9800 x 66 6.6 734`-9 1y Wfa.L 974,1 J �\976,7 978.3 x 978. 471. 0 _I �w'� x 7,4986 1 9 IX?8 Or 97Y.�1 G`f ` 99 N •. �;<`r a >a. 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ITI ro Oo N 7I M t9 a r I i i N a� f� 2 ci IN 2011 purple code Mound design wwuv.5epticResource.com (vers 15.2) Property Owner: Swanson Homes Site Address: 4315 Lakeview Court Comments: Date: 3/27/2019 PID: 0611723430015 instructions: = = enter data = adjust if desired = = computer calculated - DO NOT CHANGE! 1)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 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 8)laterals 60.5 feet long 21.0 perfs / lateral 63 1perfs total (1 /2 a perf means the first pert 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 = =1 line #8 must be less > 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 «) 95 feet of 2.0 inch supply line leads to =gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 204 gallons TOTAL pump out volume (treatment + drainback) l5) 19 feet vertical lift from pump to mound laterals, leads to a: 16) 36 GPM @ 28 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) 17) 750 gal Dose tank (code minimum) 125fl 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)i T lhrs OFF test and adjust as necessary) l9)[flinches inches from bottom of tank to '"Pump OFF" float 10) inches from bottom of tank to "Pump ON" float, orP33 inches 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) 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 2.7 15 percent site slope (0-201% range) 15 (% downslope site slope, if different than upslope) 14 inches, or 1.2 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains07inches of 0% soil credit, and ®inches of 50% soil credit. Giving a: 22 inch, or 1.8 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSIIi 7) 27.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 3) 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 16 ft. sideslope berms 1) 3:1 downslope 30 ft, downslope berm Overall Dimensions: 10.0 ft. wide by 1 62.5 ft. long Rock bed 50 ft. wide by 95 ft. long Mound footprint 4" inspection pipe 18°' cover on top /upslope berm = N. Dova'slo e berm 30 12" cover on sides (6" loamy sap & 6" topsoil) 1.8 Clean sand lift 1.2 _ Depth to Limiting _4 ir,g Condition - - - - - Absorotion Width 27.0 Note: For 0 to 1% slopes, Absafption Width is meascIred from the BedegUally in both directions-. For slopes >1%, Absarptioo Wdth is measured downhill from the upslope edge of the Ben! Rock Bed: 1Q.0 ft. by 62.5 ft. by inches under pipe, plus 20% gives =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) 31.9 up + 170.8 downslope + 20.9 ends + 59.8 under rock = F340ydj or *1.4= 476 ton plus 20% Loamy Cap: 4b ft. by 91 ft. 6" deep, plus 20% gives 93 yd' or *1.4= 130 ton Topsoil: 5Q ft. by 95 ft. 6" deep, plus 20% gives 105 yd3 or *1.4= 147 ton hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil Ct Perc 810 3/27/2019 esigner Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none 3u7o Larger LdnK W1 U1 rnuiLipie comp/ Lan KS 1250 gallon Dose tank (minimum) at 25.49 gpi 36 GPM @ 28 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 Et ®hours OFF time 20 inches from bottom of tank to "pump ON" float, or 12 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 95 ft. of 2.0 inch supply linE with end feed manifold connection (Tip: "top feed" manifold to control drainback) 12 inch, or 1.8 ft. Sand Lift Mound 10.0 ft. wide by 62.5 ft. long Rock bed 3 laterals 2.00 inch diameter 60.5 ft. long 3.Q ft. lateral spacing 7132 inch perfs 3.0 ft. perforation spacing Na 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.Q ft. Downslope I,a,,.d . yore Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 10 ft. upslope berm 3:1 sideslope 16 ft. sideslope berms 3:1 downslope 30 ft. downslope berm 4" inspection pipe 18- cover on top Upslope berin =--,,j b Downslope berm/ 30 12" cover on sides (6" Foamy cap & 6" topsoil) 1.8 Clean sand lift e 1.2 Depth to Limiting I. Absorption Width Note: For 0 to 1%slopes, Absorption Width is measured from the BedegUally in both directions. For slopes %1%, Abs-oivtrora Width is measured downhill from the upslope edge of the Bed Rock Bed: 21.0 yd or *1.4= 29 ton Mound Sand: 340 yd or *1.4= 476 ton Loamy Cap: 93 yd or "1.4= 130 ton Topsoil: 105 yd3 or *1.4= 147 ton 6 inches under pipe calculation based on 3:1!4:1 slope from top of rockbei 6" deep 6" deep INSPECTOR CHECKLIST - mound 4.15 LaKeview 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 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 sc 10' to bed,tank Et sewer line. (else sewer line > 12" below) F7Sewer line Et 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) L1Septic 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 A dose pump 36 gprn 28 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 62.5 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 10 upslope 16 sideslope 30 downslope cover depth of 12-18"+ VERIFY 3 laterals (1.2' from edge of rock) 2.00 inch pipe size (Sch40 pipe Ft 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 monitoring plan and type well abandonment form - if necessary �Re-use existing tank certification � | � \ � � \ � � . 0 � (U k k -0 k 0 4-1 w > uj � § 4,1 M9 go I � \ � � 0 � (U lz m -0 0 4-1 > uj � § 4,1 � -E fu (U lz m -0 � -E fu Soil Observation Log www.SepticResource.com vers 12.4 Owner Information Property Owner / project: Swanson Homes Date 6/1/2014 Property Address / PID: 4315 Lakeview Court Soil Survey Information ❑ refer to attached soil survey Parent matl's: 0 Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ summit ❑ Shoulder Side slope ❑ Toe slope soil survey map units: L41 C;2 slope 6-14 % direction- Linear -convex Soil Log #1 ❑ Boring ❑ Pit Elevation 981.8 Depth to SHWT 24 inches Depth (in) Texture fragment % matrix calor redox color consistence grade shape 0-6 Topsoil <35 1Oi,r41 Friable Moderate Blocky 6-24 Clay Loam <35 10yr5/4 Friable Strong Block 24-30 Clay Loam <35 10yr5/4 I Oy4/8,1-6/1 Oy 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 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigidstrong massive Comments: 4315 Lakeview Court Soil Log #2 ❑ Boring ❑ Pit Elevation 981.8 Depth to SHWT 16 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-4 Topsoil <35 10yr4/2 Friable Moderate Blocky 4-16 Clay Loam <35 1Oyr5/4 Friable Strang Blocky 16-20 Clay Loam <35 1Oyr5/4 I Oy4/8,1-6/1 Oy Friable Strong Block,, <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 I 4315 Lakeview Court Soil Log 93 0 Boring ❑ Pit Elevation 9$5.3 Depth to SHWT 14 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-4 Topsoil <35 1Oyr4/2 Friable Moderate Blocky 4-1.1 Clay Loam <35 1 Oyr5/4 Friable Strong Blocky 14-20 Clay Loam <35 1Oyr5/4 IOy4/8,1-6/1Oy 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 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid I strong I massive ! hereby certify this work was completed in accordance with AIN 7080 and any local reqs. Rusty Olson's Soil & Pere 814 De ' er Signature Company License # 4315 Lakeview Court Soil Log #4 Q Boring ❑ Pit Elevation 985.4 Depth to SHWT 20 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Friable Moderate Blocky 6-20 Loam <35 10yr4/4 Friable Strong Blocky 20-26 Loam <35 10yr5/3 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 35-50 friable weak granular blocky >- firm moderate prismatic platy rigid I strong I massive 4315 Lakeview Court Soil Log #5 P Boring ❑ Pit Elevation 977.7 Depth to SHWT 18 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Friable Moderate Blocky 6-18 claN l,otmi <35 tOyr5/4 FriableStrong Blocky 18-24 Loam <35 10yr5/4 10y4/8,1-6/10y Friable Strong Blocky <35 loose loose single grain 35-50 friable weak granular blocky >50 Erin moderate prismatic platy rigid strong massive <35 loose loose single grain 35-50 friable weak granular blocky X50 firm moderate prismatic platy rigid strong massive I 1 hereby certify this work was completed in accordance with IN 7480 and any local reqs. Rusty Olson's Soil & Perc 810 D Mier Signature Company License # Soil Observation Log www.SepticResource.com vers 12.4 Owner Information Property owner / project: Swanson Homes Date 6/1/2014 Property Address / PID: 4315 Lakeview Court Soil Survey Information ❑ refer to attached soil survey Parent matl's: ❑ Till ❑ Qutwash ❑ Lacustrine ❑ Alluvium ❑ organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder 0 Side slope ❑ Toe slope soil survey map units: L41C2 slope 6-14 % direction- Linear -Convex Soil Log #6 Q Boring ❑ Pit Elevation 985.4 Depth to SHWT 16 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Friable Moderate Blocky 6-24 Clay Loam <35 10yr4/4 Friable Strong Blocky 24-30 Loam <35 10yr5/3 1 Oy4/8,1-6/ 1 Oy Friable Strong Blocky <35 loose loose single grain 35-50 friable weals 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: Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:38 P.M. On 7106114 Location: Lot 1, Blk 3 Hole number: 1 Date hole was prepared 7/05/14 Depth of hole bottom —12"� inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches 0-6" 6"-12" 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 7/05/14 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 1:48 2:03 6" 2.0 7.5 2:10 2:25 6" 2.0 7.5 2:26 2:41 6" 2.0 7.5 AVERAGE PERG. RATE 7.5 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 1:38 P.M. On 7106/14 Location: Lot 1, Blk 3 Hole number: 2 Date hole was prepared 7105/14 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 loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/05/14 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 1:49 2:04 6" 1.0 15.0 2:19 2:24 6" 1.0 15.0 2:27 2:42 6" 1.0 15.0 AVERAGE PERC. RATE 15.0 MPI Percolation Test Data Sheet L_ic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:38 P.M. On 7106114 Location: Lot 1. Blk 3 Hole number: 3 Date hole was prepared 7105114 Depth of hole bottom _12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches 0-4" 4"-12" 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 7/05/14 depth of initial water tilling 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 1:50 2:05 6" 1.2 12.5 2:08 2:23 6" 1.2 12.5 2:28 2:43 6" 1.2 12,5 AVERAGE PERC. RATE 12.5 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere_ starting at 1:38 P.M. On 7106114 Location: Lot 1, Blk 3 Hole number: 4 Date hole was prepared 7105114 Depth of hole bottom _12"_ inches, Diameter of hole —6"—inches. Soil data from test hole: Depth, inches 0-6" 6"-12" 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 7/05/14 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 Pere Rate 1:51 2:06 6" 1.0 15.0 2:07 2:22 6" 1.0 15.0 2:29 2:44 6" 1.0 15.0 AVERAGE PERC. RATE 15.0 MPI