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Home My WebLink About06-11-2018 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) 498-8290 June 11, 2018 T. J. Grittner 2250 Longview Circle 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 20-24 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 existing septic system does not confonn to the state code chapter 7080 All neighboring wells are greater than 100' from proposed treatment areas. The soils at a depth of 12" have a percolation rate averaging 9 MPI. The existing septic tanks must be abandoned. New septic tanks need to be installed that meets 2250 -gallon septic tank capacity. 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, 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. 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 > a, R a b ow 2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: T. J. Grittner Date. 6/11/2018 Site Address: 2250 Longview Circle PID: 0311723220008 Comments: instructions: = = enter data = adjust if desired = computer calculated - DO NOT CHANGE! I r bedroom Type I ' J Residential System 1) 750 GPD design flow 3l. Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks -t) 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 rate of 12 req's a min 62.5 ft. long rockbed ni 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 laterals 61.0 feet long 11.0 perfs / lateral 63 perfs total (1/2 a perf means the first perf starts at the middle feed manifold) 7132 inch perfs at feet residual. head gives 0.56 gpm flow rate per perforation for this perf size Et spacing, Et pipe size on line 12, max perfs/lateral = 30 , line #8 must be less — OK io, 4.0 doses per day (4 minimum) i i, 188 gallons per dose (treatment volume) 2.00 5x inch diameter laterals must be used to meet "4x pipe volume" requirement 2.00 3x feet of 2.0 inch supply line leads to =gallons of drainback volume (Tip: "top feed" manifold to control the drainback) l-1, 193 gallons TOTAL pump out volume (treatment + drainback) 13 feet vertical lift from pump to mound laterals, leads to a: 36 GPM @ ZO 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 18) 7.6 inch swing on Demand float, or timed dosing of5.4 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design fIn 9 hrs OFF test and adjust as necessary) F19 1Z inches from bottom of tank to "Pump OFF" float na 20 inches from bottom of tank to "Pump ON" float, orM33 inches to "Timer ON" float if time dosed ,l Z3 inches from bottom of tank to "Hi Level" float, or inches to "Hi Level" float if time dosed 22) 714 gallons reserve capacity (after High Level Alarm is activated) 23 D.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 20 12 percent site slope (0-20% range) 12 (% downslope site slope, if different than upslope) 'Si 20 inches, or 1.7 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains inches of 0% soil credit, andinches of 50% soil credit. Giving a: 16 16 inch, or 1.3 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTiFICATIONSi l± 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: upslope ratio 9 ft. upslope berm 30) 3:1 sideslope 14 ft. sideslope berms 1 3:1 downslope 3D ft. downslope berm 132} Overall Dimensions: UDslooe berm I 9 1.3 _1 1.7 lir19 Condition 10.0 ft. wide by 63.0 ft. long, Rock bed 49 ft. wide by 1 91 ft, long Mound footprint 4" inspection pipe (-- 18" cover on top Clean sand lift Depth to Limiting ---------------- Absorption Width berm 30 12" cover on sides (6" loaray cap & 6" topsoil) 27.0--�—__ I-- — - - Note: For 0 to 1% slopes, Absorption Width is measured from the Bedequally in both directions. For slopes >1%, Absorption 1Wfdthis measured downhill frorn 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 X1.4= 24 ton ;4i Mound Sand: (note: volume is based on 3:114:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 22.6 up + 92.2 downslope + 13.9 ends + 45.1 under rock =208 yd' or £1.4= 292 ton plus 20% 3;) Loamy Cap: 45 ft. by 87 ft. 6" deep, plus 20% gives =yd-' or x`1.4= 122 ton Topsoil 49 ft. by 91 ft. 6" deep, plus 20% gives 100 yd' or "1.4= 14D ton I hereby c tify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil ft Perc 810 6/11/2018 esigner Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none 7Uk Larger LMK WILn MULLIPLe LULFIp! La91Ki 1300 gallon Dose tank (minimum) at 25.49 gpi 36 GPM C 20 ft. of head, Pump required 7.6 inch swing on Demand float which translates to roughly 4.8 inches of float tether length if time daring is required > 5.4 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 33 inches to "Hi level alarm" if time dosed 30 ft. of 2.0 inch supply line with end 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 61.4 ft. long 3.0 ft. lateral spacing 7132 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 9 It. upslope berm 3;1 sideslope 14 fideslope berms 3:1 downslope 30 ft. downslope berm 4" inspection pipe 18" cover on top Upslope herrn I l 41 11 DownsloDe bene 30 12" cover on sides (6" ioaremy cap &. 6" topsoil) 1.3 11 Clean sand lift Depth to Limiting !_imrtirlg Condition --- ---------- Absorption Width 127.0 Note: For 0 to 1% slopes, Absorptian Width is measured from the Bedequally in both directions. For slopes a1%, Absorption Width is measured downhill from the upslope edge of the Bed. Rock Bed: 21.0 yd or *1.4= 29 ton Mound Sand: 208 yd or*1.4= 292 ton Loamy Cap: 87 yd3 or *1.4= 122 ton Topsoil; 100 yd or *1.4= 140 ton 6 inches under pipe calculation based on 3:114:1 slope from top of rockbei 6" deep 6" deep INSPECTOR CHECKLIST - mound ZLt)U Longview Lircie 'ATLL setbacks: 20' to pressure tested sewer line (5 psi for 15 min) 50' to everything 100' to dispersal area with shallow well PROPLRTY LINES setback: 10' to everything Road setback: platted: 10' prop line. Metes & bounds: out of road easement, or outer ditch. LAKE/ BLI JFF 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 li sewer line. (else sewer line > 12" below) ElSewer line €t 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) F7Septic 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 lY alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) Mfg 1300 gallons N dose pump 36 gpm 20 head VERIFY PUMP CURVE 5.4 min ON 9 hr OFF float setting drop 7.6 inches at 25.5 gpi "DESIGNED" 4,8 inches approx float tether length 193,0 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 17.0 downslope Bermed topsoil beyond rockbed 9 upslope 14 sideslope 30 downslope 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 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 1- w - -E 0 CL E Z; 0 x 4w -0 IV > (v M lu LU E> tr- > 4--1 Ln 1- w - -E CL E Z; 0 1- w - -E 0 Ln 1- 0 cu w - -E 0 cu Property Owner / project Property Address / PID: Soil Observation Log Owner Information T.J. Grittner 2250 Longview Circle Nvww,SepticResource. com vers 12.4 Date 6/10/2018 Soil Survey Information ❑ refer to attached soil survey Parent matl's: ❑� Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ organic ❑ Bedrock landscape position: ❑ summit ❑ Shoulder ❑ Side slope ❑ Toe slope soil survey map units: L22D2 slope 12 % direction- Linear Soil Log #1 Boring ❑ Pit Elevation 93.2 Depth to SHWT 22 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 Topsoil <35 1Oyr3/1 Loose Moderate Blocky 12-18 Clay Loam =35 1Oyr4/3 Friable Strong Block 18-22 Clay Loam 10yr5/4 Friable Strom B , k 22-30 Clay Loam IOyr5/3 IOy4/8,1-6/toy Finn Strong Block\ <35 loose loose single grain 35-50 friable weak granular blocky >50 tlrin moderate prismatic platy rigid strong massive Comments: 2250 Longview Circle Soil Log #2 21 Boring ❑ Pit Elevation 93.2 Depth to SHWT 24 inches Depth (ill Texttnre fragment % matrix color redox color consistence grade shape 0-10 Topsoil <35 10yr3/1 Loose Moderate Blocky 10-14 Clay Loam <35 1 Oyr4/3 Friable Strong Block} 14-24 Clay Loam <35 1Oyr5/4 Fri;thle Stroll- 13k d% 24-30 Clay Loam <35 1Oyr5/3 I Oy4/8,1-6/1 Oy Firm Strong Blocky <35 loose loose single grain 35-50 friable weals granular block - >54 firm moderate prismatic platw rigid strong massive Soil Log 43 0 Boring ❑ Pit Elevation 93.2 Depth to SHWT 20 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-10 Topsoil <35 1Oyr3/2 Loose Moderate BlockN 10-14 Clay Loam <35 1Oyr4/3 Friable Strong Block 14-20 Clay Loam <35 1Oyr5/4 Friable Strong Block,, 20-30 Clay Loam <35 1Oyr5/4 I Oy4/8,1-6/1 Oy Firm Strong Blocky <�5 loose loose single grain 35-50 friable weal* granular block >50 firm moderate prismatic plan rigid strong massive I hereby certify th' 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 Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:42 A.M. On 6/11/18 Location: 2250 Longview Circle Hole number: 1 Date hole was prepared: 6/10/18 Depth of hole bottom _12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches 0-12 Soil texture Topsoil 10yr311 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6110/18 depth of initial water filling 1.2 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 9:56 10.26 6" 3.7 8.1 10:29 10:59 6" 3.6 8.3 11:00 11:30 6" 3.6 8.3 AVERAGE PERC. RATE 8.2 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 9:42 A.M. On 6111118 Location: 2250 Longview Circle Hole number: 2 Date hole was prepared: 6/10118 Depth of hole bottom _12"_ inches, Diameter of hole _6"_inches. Soil data from test hole.- Depth, ole:Depth, inches Soil texture 0-10 Topsoil 10yr311 10-12 Clay loam 10yr413 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6/10118 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 9:57 10:27 6" 3.2 9.4 10:28 10:58 6" 3.1 9.6 11:01 11:31 6" 3.1 9.6 AVERAGE PERC. RATE 9.5 MPI