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HomeMy WebLinkAbout10-12-2017 Septic Design10 X 63 Rock -bed 2250 Septic 1300 Pump Joseph Olson D.B.A. Rusty Olson's--Soil and Percolation Testing Joseph J. Olson--MPCA License # 810 36 GPM Pump 11481 Riverview Rd. NE, Hanover, MN 55341 25 * TDH (763) 498-8779 Fax (763) 498-8290 October 12, 2017 City of Orono Septic Plan Review Stonewood LLC. Reviewer: e�., (r 1150 Pine View Drive All work shall be done in full compliance Orono, Hennepin County with all applicable septic and zoning code. This on-site Sewage Treatment System is designed for a Type I five -bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The periodically saturated soils were located at 16-22 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 All neighboring wells are greater than 100' from proposed treatment areas. The soils at a depth of 12" have a percolation rate averaging 4 MPI. A 2250 -gallon combination septic tank 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 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. NothinE other than ra water laundry, showers etc. Human water and toilet tissue should be disposed of into the septic tanks. Garbage disposals are not recommended. Additives must not be used,• they may cause harmful damage to your se tics stem. It is recommended that you purnD the tank every vear for 1 septic tank every two years for two septic tanks. Sincerely, Joseph J. Olson -,A-- _ 1 IC P17,mAty FJTNzc w ai J I 90 I 'I 5fu 9# bg t1Pr+�ti iV > sass I 5 I i IrrEs V Y SEPT! SI 13 •1 N x } , SEP -IC StTE ?ow-0�/r ' PROPOSED, 1 HOUSE - ��rftopomn ...,..... ,...... ,. 7 u��.....,, .F,,.. ,_ _. O / O r � � / ✓ In ' _ _ »^ L } ~yy I`♦ P ♦ IIWBOP45fD Vi WAY /� rY • 'l'1 1 rr� / y ' 11 � � �Opy� `�1 eaatE ��.J—+' � fi � !`' //j ✓/ ✓// I `i 11�. �.ti��i tib• - 6S' "S� ''l J ///moi` � ✓/ r / i W1 1 r/ '• '�` ofm II0 / } } `_ ae ✓ k' t /mad% ti D4EWAYYD r/=EY61al,G ` 4 � 5 •Pg.. `, 1 /" Dave.'.,, i •/ FINE VIEW%', ` DRIVE v_ GCLLn— c1 Cc' A Zr VA 4 ^i :r w cu TV © • p. z- N ' CL aha C 77 2011 purple code Mound Design VV U 1 �I 1 yywnN.$eptiCRP.RnumP rnm lvore i S 91 Property Owner: Stonewood LLC Date: 10/11/2017 Site Address: 1150 Pineview Drive PID: 2811823420009 Comments: instructions: = = enter data = adjust if desired = computer calculated - DO NOT CHANGE! 1) =bedroorn Type Residential System 2) 750 GPD design flaw 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)i.2 GPD/ftz 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) =ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection s)Late rals 61.0 feet long 21.0 perfs / lateral F 63 1 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, 0 pipe size on line 12, max perfs/lateral = 30 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 'Ax pipe volume" requirement 2.00 3x 13) F 140 feet of 2.0 inch supply line leads to DKIgations of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 212 gallons TOTAL pump out volume (treatment + drainback) ls) P36 ]GPM feet vertical lift from pump to mound laterals, leads to a: 16) @ =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) =inch swing on Demand float, or timed dosing of5.9 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design ftow) 19hrs OFF test and adjust as necessary) 1')) 12 inches from bottom of tank to "Pump OFF" float 20) 20 inches from bottom of tank to "Pump ON" float, orP33 inches to "Timer ON" float if time dosed 21) 23 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 Leve( Alarm is activated) 0.60 gpd/ft2 Absorption area Soil Loading Rate, which gives a mound ratio of2 (minimum) (this must match the soil boring log) desired mound ratio 2.0 =percent site slope (0-20% range) =(% downslope site slope, if different than upslope) i8 inches, or 1.5 ft. to Redox or other Limiting condition (need at least 12" to be a Type 1) Treatment zone contains F 0inches of 0% soil credit, and =inches of 50% soil credit. Giving a: 18 inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 7) 20.0 ft.Total ABSORPTION width (with sand beyond rockbed as follows:) 8) pio-Rt. t. upslope and sideslope Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: �) MclownsLope upslope ratio lift. ft. upslope berm sidesLope ft. sidesLope berms 1) downslope berm Overall Dimensions: 10.0 ft. wide by 63.0 ft. long Rock bed 39 ft. wide by 1 85 1 ft. long Mound footprint 4" inspection pipe i 8" cover on top Upslope berm 12 .1 1 n1AtA1RCIl\la harm. / 12" cover on sides (6" loamy cap & 6" topsoil) 1.5 Cle7sandlift__1.5 Dep L rr tting Condition — — — — --_-- Absorption WidthT207.0----] 20.0 w_ _z_—]----------_ Note: For 0 to 1% slopes, Absorption Wfdtb is measured from the Bedequally in both directions. For slopes 319, 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 =yd' or *1.4= =ton Mound Sand: (note: volume is based on 3:1/4:1 slope from top of rockbed, Exchange sand for loamy cap if desired) 31.8 up + F50.8 downslope + 8.7 ends + 38.5 under rock = 15b yd' or *1,4= 218 ton plus 20% Loamy Cap: 35 ft. by =ft. 6" deep, plus 20% gives 63 yd' or *1.4= 8$ ton Topsoil.: 39 ft. by F85 ft. 6" deep, plus 20% gives 74 yd' or *1.4= F1-047 ton I hereby ce/rt�f' y that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil li Perc 810 10/11/2017 Signature Company License# Date Installer Summary 2250 gallon Septic tank (minimum) Tank options: none :)u�b Larger rank cairn rnuiupEe comprranK5 1300 Igalton Dose tank (minimum) at 25.49 gpi 36 GPM 25 ft, of head, Pump required 8.3 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 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 140 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 1$ inch, or 1.5 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 =ft. lateral spacing 7/32 inch perfs 3.0 ft. perforation spacing FNo Effluent filter Et alarm 3 IcLean out Et valve box assemblies 20.0 Tt-Total sand ABSORPTION width (minimum) 0.0 ft. upslope and sideslope (sand beyond rockbed, minimum) 10.0 ft. Downslope (sand beyond rockbed, minimum) Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 12 ft. upslope berm 3:1sideslope 11 ft. sideslope berms 4:1 downslope 1 17 Ift. downslope berm 4" inspection pipe 18"' cover on top Upslope berm 1z lam_ DownsCope berm 17 12" cover on sides (6" loamy cap fir 6" topsoil) 1.5 11 Clean sand lift _ 1.5 Depth to Limiting ! iml ing Conditio - _ - _ __ _ - Absorption Width = ----�-�- _ 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 Bod Rock Bed: 21.0 yd or *1.4= 29 ton 6 inches under pipe Mound Sand: 156 yda or *1.4= 218 ton calculation based on 3:114:1 slope from top of rockbe, Loamy Cap: 63 yd3 or *1.4= 88 ton 6" deep Topsoil: 74 yd or *1.4= 104 ton 6" deep PM 115U Pmeview DriveINSPECTOR CHECKLIST - mound 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 & 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) Sewer line Ft baffle connection (no 90's, 3' between 45's, slope min 1" in 8', max 2" in 8') (no depth reqs, clean out every 100', Sch 40 pipe) Septic tank and risers (water tight, insulated, proper depth, existing verified by pumping) mftb_ 2250 gallons none Riser over outlet, riser over inlet or center, and 6"+ inspection pipe over any remaining baffles. No effluent filter & alarm Dose tank risers and piping (water tight, insulated, proper depth, drainback) mfg 1300 gallons dose pump 36 gpm 25 head VERIFY PUMP CURVE 5.9 min ON 9 hr OFF float setting drop 8.3 inches at 25.5 gpi "DESIGNED" 5.2 inches approx float tether length 212.0 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 118"+, 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 18 inches. (Jar test : 2" sand leaves < 1 /8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope Bermed topsoil beyond rockbed 12 upslope cover depth of 12-18"+ VERIFY 3 laterals (1-2' from edge of rock) 2.00 inch pipe size (Sch40 pipe & fittings) 3.0 ft lateral spacing 7/32 inch perforations 3.0 ft perforation spacing 10.0 downslope 11 sideslope 17 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 � k « -0 ƒ 2 _ � C t t ƒW -. � (D _ 7 2 � $ � W / §/ � o � § � ƒ k � 2�k ¥ �2 � k « � ] § ƒ k _ C 2 « _ $ � e | | � o % ¥ � ] § ƒ k _ C 2 « _ $ e � � o % ¥ CL | L ] � � 0m E IML 0 % a _ 41r -t E � § k _ C 2 « � � | � 0m E IML 0 % a _ 41r -t E � Locis of Soil Borincls License #810 Location or Project: Proposed Lot 3 2700 6th Ave. N Borings made by: Rusty Olson's Soil and Perc testing 7/1712012 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 1011.4, Mottled Soil at_1.8_feet 0""-14" Dark brown loam 10yr3/2 H2O present at –X- 14"-22" Brown loam 10yr4/4 22"-30" Rusty brown loam to clay loam 10yr5/4 Boring Number _2_ Surface elevation 1011.4_ Mottled Soil at 2.0 feet 0"`-16" Dark brown loam 10yr312 H2O present at —X- 16"-24" Brown loam 10yr4/4 24"-30" Rusty brown loam to clay loam 10yr4/4 Boring Number _3— Surface Elevation —1014.7 Mottled Soil at _1.7 feet 0""-14" Dark brown loam 10yr3/2 H2O present at —X- 14"-20" Brown loam 10yr4/4 20"-30" Rusty brown loam to clay loam 10yr5/4 Boring Number 4_ Surface Elevation _1014.7 Mottled Soil at _1.5_ feet 0"-8" Dark brown loam 10yr4/2 H2O present at —X- 8"-18" Rusty brown 10yr5/4 18"-30" Rusty brown loam 10yr6/4 Boring Number -5— Surface Elevation _1010.4 Mottled Soil at feet 0"-16" Dark brown loam 10yr3/2 _1.3_ H2O present at —X- 16"-22" Rusty brown clay loam 10yr4/2 22"-30" Rusty brown clay loam 10yr5/3 Boring Number 6_ Surface elevation 1014.3_ Mottled Soil at feet 0"-14" Dark brown loam 10yr3/2 H2O present at _2.1_ 14"-26" Brown loam 10yr4/4 —X- 26""-30" Rusty brown loam 10yr5/4 Property Owner / project: Property Address / PID: Soil Observation Log w� CentirRrern ��rP ��m .,o.� 17 Owner Information Stonewood LLC. 1150 Pineview Drive Date 4/10/2017 Soil Survey Information ❑ refer to attached soil survey Parent mail's: Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑Organic F1 Bedrock landscape position: ❑ summit Q Shoulder ❑ Side slope ❑ Toe slope soil survey map units: L36A slope 2-3 % direction- Linear Soil Log #7 2 Boring ❑ Pit Elevation 1010.1 Depth to SHWT 18 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-18 Topsoil <35 2.5y2.5/1 Loose Loose Single grain 18-24 Clay Loam <35 2.5y3/2 10y4/8,1-6/l0y Friable Strong Blocky 24-30 Clay Loam <35 2.5y5/3 10y4/8,1-6/l0y Firm 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 strong massive Comments: 1150 Pineview Drive Soil Log 48 17 Boring ❑ Pit Elevation 1010.1 Depth to SHWT 18 inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-18 Topsoil <35 2.5y2.5/1 Loose Loose Single grain 18-24 Clay Loam <35 2.5y3/2 IOy4/8,1-6/1Oy Friable Strong Blocky 24-30 Clay Loam 35 2.5v5/3 I Oy4/8,1-6/1 Oy Firm 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 strong massive 1150 Pineview Drive Soil Log #9 21 Boring ❑ pit Elevation 1010.5 Depth to SHWT 16 Inches Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-16 Topsoil <35 I Oyr3/2 Loose Loose Single grain 16-22 Clay Loam <35 1Oyr4/3 IOy4/8,1-6/lOy Firm Strong Blocky 22-30 Clay Loam <" 5-6/1 10y4/$,1-6/1Oy Firm Strang Blocky <35 loose loose single grain 35-50 friable weak granular blocky >50 fWM 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 1h certify th' ork was completed in accordance with MN 7080 and any local reqs. Rusty Olson's Sail & Pere 810 signer Signature Company License # Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 8:10 A.M. On7/18/12 Location: Proposed Lot 3 2700 6th Ave. N. Hole number: 1 Date hole was prepared:7117112 Depth of hole bottom _12 inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-12" Dark brown loam 10yr312 Method of scratching side waft: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7117112 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 8.25 8:40 6" 5.5 2.7 8:47 9:02 6" 5.5 2.7 9:03 9:18 6" 5.5 2.7 AVERAGE FERC. RATE 2.7 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 8:10 A.M. On7/18/12 Location: Proposed Lot 3 2700 6th Ave. N. Hole number: 2 Date hole was prepared:7/17/12 Depth of hale bottom _12"_ inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-12" Dark brown loam 10yr3/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/17/12 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 8:26 8:41 6" 3.7 4.0 8:46 9:01 6" 3.6 4.2 9:04 9:19 6" 3.5 4.3 AVERAGE FERC. RATE 4.2 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 8:10 A.M. On7/18/12 Location: Proposed Lot 3 2700 6th Ave. N. Hole number: 3 Date hole was prepared -.7/17/12 Depth of hole bottom _12' inches, Diameter of hole 6"' inches. Soil data from test hole: w Depth, inches Soil texture 0-12" Dark brown loam 10yr3/2 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 7/17/12 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 8:29 8:42 6" 3.2 4.7 8:45 9:00 6" 3.1 4.8 9:05 9:20 6" 3.0 5.0 AVERAGE PERC. RATE 4.8 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Pere. starting at 8:10 A.M. On7/18/12 Location: Proposed Lot 3 2700 6th Ave. N. Hole number: 4 Date hole was prepared: 7117/12 Depth of hole bottom _12"_ inches, Diameter of hole 6" inches. Soil data from test hole: Depth, inches Soil texture 0-8" Dark brown loam 10yr4/2 8°-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 7/17/12 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 i ime I ime Depth Drop in H2O Pere Rate 8:28 8:43 6" 5.0 3.0 8:44 8:59 6" 4.8 3.1 9:06 9:21 6" 4.6 3.2 AVERAGE PERC. RATE 3.1 MPI