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Home My WebLink About10-30-2018 Septic Design5 Bedroom 10 X 63 Rock bed 1-1300 Pump 1-2250 Septic Joseph Olson D.B.A. City of Orono Septic Plan Review Reviewer: All work shah done in full compliance with all applicable septic and zoning code. 36 GPM Rusty Olson's--Sail and Percolation Testing 20 Feet TDH Joseph J. Olson--MPCA License #810 11481 Riverview Rd. NE, Hanover, MN 55341 (763) 498-8779 Fax (763) 498-8290 Revised October 30, 2018 Wooddale Builders 1130 Hunter Drive 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 14-18 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 9 MPI. A 2250 -gallon septic tank 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 Darwin 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. Keep all heavy a ui ment 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 must not go into the 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. S' erely, Joseph J. Olson ___HUNTER _DRIVE 2911 purple code 'if, .Q Property Owner: Site Address: Comments: Mound Design www SepticResourcecom (vers 15.2) Wooddate Builders 1130 Hunter Drive Date: 2/19/2018 PID: 2511823420007 instructions: = = enter data t = adjust if desired 0 = computer calculated - DO NOT CHANGE! I t =bedroorn Type �I Residential System 3) 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/ftz mound sand loading rate contour loading rate of =req's a min 63 ft. long rockbed 6) =ft 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 S) I (laterals 61.0 feet tong 21.0 perfs / lateral F 63 perfs total (1 /2 a perf means the first perf starts at the middle feed manifold) 3i 7/32 inch perfs at =feet residual head gives 0.56 gpm flow rate per perforation for this perf size ft spacing, Et pipe size on line 12, max perfs/lateral = 30 line #8 must be less --> OK io) =doses per day (4 minimum) i 1 t 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 3t 60 feet of 2.0 inch supply line leads to 10 gallons of drainback volume (Tip: "top feed" manifold to control the drainback) 4) F198 gallons TOTAL pump out volume (treatment + drainback) t5) F3�6GPM feet vertical lift pump to mound laterals, leads to a: t6) C� 20 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 tat =inch swing on Demand float, or timed dosing of5.5 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design flow)hrs OFF test and adjust as necessary) t9)Itinches inches from bottom of tank to "Pump OFF" float 20) inches from bottom of tank to "Pump ON" float, or 12 inches to "Timer ON" float if time dosed 21) from bottom of tank to "Hi Level" float, or 33 inches to "Hi Level" float if time dosed 22)714 gatlons reserve capacity (after High Level Alarm is activated) 0.45 gpd/ftz 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 =percent site slope (0-20% range) = (% downslope site slope, if different than upslope) 18 3riches, or 1.5 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains inches of 0% soil credit, and F 701nches of 50% soil credit. Giving a: =inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 26.$ ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 0.0 ft. upslope and sideslope it v.7 I1 L. uownstope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: Nr 4:1 upslope ratioItft. ft, upslope berm a 3:1 sideslope ft. sideslope berms 4:1 downslope downslope berm >> Overall Dimensions: 9.9 ft. wide by 63.0 ft. long Rock bed 43 ft. wide by L_87A ft. long Mound footprint 4) 4" inspection pipe 18" cover on top Upslope berm =_l 1� I. 1.5 11 Clean sand lift Doi^rms63pe berm 22 12" cover on sides (d" loamy cap &.6" topsoil) _ __ 1.5 Depth to Limiting Limiting Condition — — — — — — — — — — — — — — — Absorption Width26.8 ---`---- — — z —.- Note: _ For 0 to 1% slopes, Absorption Width is measured from the Beo equalty in both directions. For slopes >1%, Absorption Width is measured downhill from the upslope edge of the Bed Rock Bed: 9.9 ft. by 63.0 ft. by inches under pipe, plus 20% gives =yd' or *1.4= 29 ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 29.5 up +73.7 downslope + 10.6 ends + 41.6 under rock =F-1 87 yd' or *1.4= F 261 ton plus 20% 5) Loamy Cap: 39 ft. by =ft. 6" deep, plus 20% gives 5) Topsoil: 43 ft. by 87 ft. 6" deep, plus 20% gives 72 yd' or *1.4= 101 ton 83 yd' or*1.4= =ton I hereby certify that 1 have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil & Perc 810 2/19/2018 signer Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none ouzo iafger tanK wiut muttipte cumpf tarns 1300 gallon Dose tank (minimum) at 25.49 gpi 36 GPM E20 ft. of head, Pump required =inch swing on Demand float which translates to roughly 4.9 inches of float tether length if time dosing is required --> 5.5 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 60 ft. of =inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) M 1611, UI �7 TC. ]ana LZTImouna ft. wide byft. long Rock bed laterals 2.00 inch diameter 61.0 ft. long 3.0 ft. lateral spacing inch perfs 3.0 ft, perforation spacing No Effluent filter Ft alarm 3 JcLean out & valve box assemblies 26.8 ft.Total sand ABSORPTION width (minimum) 0.0 ft. upslope and sideslope (sand beyond rockbed, minimum) 16,9 ft. Downslope (sand beyond rockbed, minimum) Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio11 ft, upslope berm 3:1 sideslope 12 ft. sideslope berms 4:1 downslope 1 22 Ift. downslope berm 4" inspection pipe cover on top Upslope berm 11 .I L, Downslooe berm 22 12" cover on sides (6" loamy cap &.6" topsoil) 1.5 11 Clean sand lift _ 1.5 Depth to Limiting Limiting Condition --— — — — — — — — — — Absor tion Width 26.$ — — — — — — — — — — — --` Note: Far 0 to 1%slopes, Absorption Width is measured from the Bedequally in both directions. For slopes >1%, Absorption Wtdthis measured downhill from the upslope edge of the Bed. Rock Bed: 21.0 yd3 or *1.4= 29 ton 6 inches under pipe Mound Sand: 187 —yd 3 or *1,4= 261 ton calculation based on 3:114:1 slope from top of rockbe+ Loamy Cap: 72 yd or *1.4= 101 ton 6" deep Topsoil: 83 yd or *1.4= 116 ton 6" deep INSPECTOR CHECKLIST - mound 11 3I Hunter Drive 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 Ft 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 ft sewer line. (else sewer line > 12" below) ❑ Sewer line Ft 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 64 inspection pipe over any remaining baffles. No effluent filter Ft alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) Mfg jinn ..ii— dose pump 36 gpm 20 head VERIFY PUMP CURVE 5.5 rain ON 9 hr OFF float setting drop 7.8 inches at 25.5 gpi "DESIGNED" 4.9 inches approx float tether length 198.0 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 9.9 X 63.0 Sand lift depth 18 inches. (Jar test : 2" sand leaves < 1/8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope 16.9 downslope Bermed topsoil beyond rockbed 11 upslope 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 7132 inch perforations 3.0 ft perforation spacing 12 sideslope 22 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 well abandonment form - if necessary =Re -use existing tank certification G cu Y as = O C — m 177 ,p M � s d_ �L. G C O 2 O 177 ,p M � s Soil Observation Log Owner Information Property Owner / project: Mooney Lake Preserve Property Address / PID: Lot 2, B1kA Date 3/1/2015 W N 'O ff] UI 0 Q 4 �' a '� L ❑ summit ❑ Shoulder Side slope N 0 122C:2 slope 4 % direction- Lineal N N L V iC M LU d eW U 5 5 C m v y� N C7 i� Cu L Soil Observation Log Owner Information Property Owner / project: Mooney Lake Preserve Property Address / PID: Lot 2, B1kA Date 3/1/2015 W N 'O ff] UI t6 Q 4 �' a '� L ❑ summit ❑ Shoulder Side slope [] Toe slope soil survey map units: 122C:2 slope 4 % direction- Lineal Soil Observation Log Owner Information Property Owner / project: Mooney Lake Preserve Property Address / PID: Lot 2, B1kA Date 3/1/2015 Soil Log #1 0 Being ❑ Pit Elevation 1015.2 Depth to SHWT 16" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 LooseLoose Single grain Soil Survey Information ❑ refer to attached soil survey Parent matl's: 0 Till ❑ Outwash ❑ Lamstrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ summit ❑ Shoulder Side slope [] Toe slope soil survey map units: 122C:2 slope 4 % direction- Lineal Soil Log #1 0 Being ❑ Pit Elevation 1015.2 Depth to SHWT 16" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 LooseLoose Single grain 6-16 Clay Loam <35 10yr5/4 Topsoil Firm Strong Blocky 16-24 ClaN Loam <35 10yr5/4 10y4/8,1 -6/10y Firm Strong Prismatic Firm Strong <35 16-24 Clay Loam loose loose single grain Firm Strong 35-50 friable weak granular blocky >50 firm moderate Prismatic platy Firm Strong Prismatic rigid strong massive <35 loose loose single grain loose loose 35-50 friable weak granular blocky friable weak >50 firm moderate prismatic platy firm moderate Prismatic platy rigid strong massive Comments: Lot 2, Blk Sohl Lo #2 Boring J Pit Elevation 1015.2 Deptb to SHWT 16" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil c35 10yr4/2 Loose Loose single grain 6-16 Clay Loam <35 10yr5/4 Firm Strong Blocky 16-24 Clay Loam <35 10yr5/4 10y4/8,1-6/l0y Firm Strong Prismatic <35 35-50 Firm Strong Prismatic >50 <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate Prismatic platy rigid strong massive Lot 2, B1kJ[, Soil Lo #3 Boring 0 Pit Elevation 1017.4 Depth to SHWT 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Loose Loose Single grain 6-18 Clay Loam <35 l Oyr5/4 Firm Strong Blocky 18-24 Clay Loath <35 1Oyr5/4 IOy4/8,1-6/10y Firm Strong Prismatic Loose Loose <35 6-18 Clay Loam loose loose single grain Firm Strong 35-50 18-24 Clay Loam friable weak granular blocky Firm Strong >50 firm moderate prismatic platy loose loose single grain rigid strong massive friable weak <35 loose loose single grain firm moderate 35-50 friable weak granular blocky rigid strong >50 firm moderate prismatic platy loose loose single grain rigid strong massive I hereby cert this workwas completed in accordance with ADV 7080 and any local reqs. Rusty Olson's Soil & Pere 810 Dgner Signatttre Company License 4 Lot 2, Blk Soil Log #4 0 Boxing ] Pit Elevation 1017.4 Deptls to SHWT 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 1Oyr4/2 Loose Loose Single grain 6-18 Clay Loam <35 10yr5/4 Firm Strong Blocky 18-24 Clay Loam <35 10yr5/4 1Oy4/8,1-6/l0y Firm Strong Prismatic <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 stropg massive Lot 2, Ell Soil Log #5 ❑ Boring pit Elevation 1014 Depth to SHWT 14" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-8 Topsoil <35 1Oyr4/2 Loose Loose Single grain 8-14 Clay Loam <35 10yr5/4 Firm Strong Blocky 14-18 Clay Loam <35 1Oyr5/4 IOy4/8,1-6/IOy Firm Strong Prismatic landscape position: [] Summit <35 ❑ Toe slope soil survey map units: loose loose single grain Strong Blocky 35-50 Clay Loam <35 friable weak granular blocky Strong Prismatic >50 f i -m 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 1 hereby certify this work was completed in accordance with AM 7080 and any local reqs, Rusty Olson's Soil testing _ D er Signature Company Soil Observation Log 810 License # www.5eptluKesource_com vers 12.4 Owner Information Property Owner / project Mooney Lake Preserve Date 3/1/2015 Property Address / PID: Lot 2, Blk Soil Log #6 21 Boring ❑ Pit Elevation 1015.2 Depth toSHWT 119" Depth (in) Texture fragment % matrix color redox color consistence grade shape Soil Survey Information ❑ refer to attached soil survey Parent matl's: Q TIII ❑ outwash ❑ Lacustrine ❑ Alluvium ❑ organic ❑ Bedrock landscape position: [] Summit ❑ Shoulder 0 Side slope ❑ Toe slope soil survey map units: L22C2 slope 6 % direction- Lineal Soil Log #6 21 Boring ❑ Pit Elevation 1015.2 Depth toSHWT 119" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 1 Oyr4/2 Loose Loose Single grain 6-18 Clay Loam <35 10yr5/4 f=irm Strong Blocky 18-24 Clay Loam <35 10yr5,14 I Oy4/8,1-6/1 Oy Firm Strong Prismatic Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc, starting at 1235 P.M. On 3/02/15 Location: Lot 2 Blka Hole number: 1 Date hole was prepared: 3/02/15 Depth of hole bottom _12"_ inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-6" Dart Brown Loam 10yr412 6"'12" Brown clay Loam10yr614 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3102115 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 1:45 1:15 6" 1.7 17.6 1:22 1:52 6" 1.6 18.7 1:53 2:23 6" 1.6 18.7 AVERAGE PERC. RATE 18.3 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 12:35 P.M. On 3102115 Location: Lot 2 Blk $k Hole number: 2 Date hole was prepared: 3/02115 Depth of hole bottom _12"_ inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture Dark Brown Loam 10yr4/2 Brown clay Loam10yr514 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3102115 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 12:46 1:16 6" 4.2 7.1 1:21 1:52 6" 4.1 7.3 1:54 2:23 6" 4.0 7.5 AVERAGE PERC. RATE 7,3 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 12:35 P.M. On 3102115 Location: Lot 2 Blk 3� Hole number: 3 Date hole was prepared: 3/02/15 Depth of hole bottom _12"_ inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-6" Dario Brown Loam 10yr412 611'12" Brown clay Loam10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3102115 depth of initial water filling 12 inches above the hole bottom Method used to maintain at least 12 incites 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 12:47 1:17 6" 5.5 5.4 1:20 1:50 6" 5.5 5.4 1:55 2:25 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 12:35 P.M. On 3/02/15 Location: Lot 2 131k 3Z Hole number: 4 Date hole was prepared: 3102/15 Depth of hole bottom _12"_ inches, Diameter of hole 6',inches. Soil data from test hole; Depth, inches Soil texture 0-6" Dark Drown Loam 10yr4/2 6"-12" Brown clay Loam10yr514 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 3/02/15 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 1:4tf 1:18 6" 5.5 5.4 1.19 1:49 6" 5-5 5.4 1:56 226 6" 5-5 5.4 AVERAGE PERC. RATE 5.4 MPI