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HomeMy WebLinkAbout07-16-2018 septic design5 bedroom 2250 Septic Tank 1250 Pump Tank Joseph Olson D.B.A. City of Orono Septic Plan Review Reviewer; 1� All work shall be done in full compliance with all applicable septic and zoning code. Rusty Olson's--Soil and Percolation Testing 10 X $3 Rock Bed. Joseph J. Olson--MPCA License # 810 11481 Riverview Rd. NE, Hanover, MN 55341 3$ GPM Pump (763) 498-8779 Fax (763) 498-8290 with 35# TDS Revised July 16, 2018 Chamberlin Capital . 2845 Lillian Lane I1 CY, Orono, Hennepin County at 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 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 or rock. The future site is dual rock beds using gate valves for unlevel pressure distribution. 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 or it equivalent 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 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. 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. Garbage disposals are not recommended. Iron filters cannot go into the system. 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 y Rx G I I / �Fo � o I ��\ •:�I � I IS 37.33 10.0 33 �.Z 2.33o�NOOA 2W If 7.00 � tris 99,00t8 6.00 z 0 1 1 ' GARAGE fl� c GFE 1020.6 I I 92.00 'o 0aoA `o, r I I• m �/ / �j / � I i/ io IP \ I 5' cn Ir 41 ov— • � I ` -L / / / / �� J� I / fTy ♦ I i ` .� j r c I IC II / s rcx u . / �" �i rn ! I I r1 Po u r } I r} w 2 } dr t -40 \ — —=QRAINAGE AN6 UnLnY EASEMENT PER PLAT 1 `-- NO'16'00"E _9cot— r- 00 m 2011 purple code Mound Design www.5eptfcResource.com (vers 15.2) Property Owner: Chamberlin Capital LLC Date: 7/1312018 Site Address: 2845 Lillian Lane PID: 3311823340018 Comments: instructions: = = enter data = adjust if desired O = computer calculated - DO NOT CHANGE! I =bedroom Type Residential System 21 F 750 GPD design flow s) Yes Garbage disposal or pumped to septic 50% larger tank with multiple comp/tanks 41 2250 Gal Septic tank (code minimum) 2250 Gal Septic tank (design size /LUG regd) Tank options: none s) i.2 GPD/fe mound sand Loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed 61 10.0 ft rockbed width 63.0 ft rockbed length 71 =ft lateral spacing 3.0 ft perforation spacing (maximum of 3 for both) end feed manifold connection 8) =laterals 61.0 feet long 21.0 perfs / lateral 63 perfs total (1 /2 a peri means the first pert starts at the middle feed manifold) 90 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 W 30 , line #8 must be less > OK f o) =doses per day (4 minimum) I )t 188 gallons per dose (treatment volume) 2.00 5x 121 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement 2.00 3x M 260 feet of 2.0 inch supply tine leads to gallons of drainback volume (Tip: "top feed" manifold to control the drainback) f4) 232 gallons TOTAL pump out volume (treatment + drai.nback) fs} 19 feet vertical lift from pump to mound laterals, leads to a: )6� 36 GPM @ 35 feet of head, Pump requirement (note: >50gpm may require an extra 3.6' of head) v) 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size /LUG req'd) at 25.49 gpi leads to a ts) =inch swing on Demand float, or timed dosing of6.4 min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design flow) 9 hrs OFF test and adjust as necessary) 19) 12 inches from bottom of tank to "rump OFF" float 10) 21 inches from bottom of tank to "Pump ON" float, or 12 inches to Timer ON" float if time dosed 2 s 24 inches from bottom of tank to "Hi Levet" float, or 34 1 inches to "HI Level" float If time dosed 22) =gallons reserve capacity (after High Level Alarm is activated) F0 .45 gpd/ftp Absorption area Sail Loading Rate, which gives a mound ratio of [17] 7 (minimum) (this must match the soil boring log) desired mound ratio E-67percent site slope (0-20% range) =(% I(% downslope site slope, If different than upslope) =inches, or 1.5 ft. to Redox or other limiting condition (need at least 12" to be a Type 1) Treatment zone contains F0 inches of 0% soil credit, and =inches of 50% soil credit. Giving a: =inch, or 1.5 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONSIII 2-- ft.Totat ABSORPTION width (with sand beyond rockbed as follows:) 0.0 ft. upslope and sideslope 0 17.Rft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: " upslope ratio 11 ft. upslope berm 3:1 sideslope 12 ft. sideslope berms 4.1 downslope 1 22 Ift. downslope berm Overall Dimensions: 10.0 ft. wide by 63.0 ft. long Rock bed 43 ft. wide by 1 87 1 ft. long Mound footprint 4" inspection pipe 18" cover on top Upslope berm LE 11 1� 11 Downslope berm 22 12" cover on sides (6" loamy cap & 6" topsoil) 1.5 1 Clean sand lift _ _ 1 Depth to Limiting Limiting Condition -------------- -- Absorption Width 27.0 —`— — — — — — — --_ Note: For 0 to 1%slopes, Absorptlort Wldth is measured from the Bedequally in both directions. For slopes >1%, Absorptlon Wldth 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 21 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 + F —74.-Ol downslope + 10.7 ends + F42-0-1 under rock = 187 yd3 or "1.4= 262 ton plus 20% Loamy Cap: 39 ft. by =ft. 6" deep, plus 20% gives Topsoil: 43 Ift. by 1 87 Ift. 6" deep, plus 20% gives in =y& or *1.4- 101 ton 84 yd' or -1.4 118 ton 0 Rusty Olson"s Sall lx Pere 810 7/1312018 re Company License# Date Installer Summary 2250 Batton Septic tank (minimum) Tank options: none wx larger LanK wnn nwaupie comp) CdnKS 1250 gallon Dose tank (minimum) at 25.49 Bpi 36 GPM 35 ft. of head, Pump required 4.1 linch swing on Demand float which translates to roughly 5.6 inches of float tether length if time dosing is required --> 6.4 minutes ON time & =hours OFF time 21 inches from bottom of tank to "pump ON" float, or 12 inches to "timer ON" float 24 jinches from bottom of tank to "Hi Level Alarm" or 1 34 finches to "Hi level alarm" if time dosed 260 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 18 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 3.0 ft. lateral spacing 7/32 inch perfs 3.0 ft. perforation spacing No Effluent filter ft alarm F-3—]clean out & valve box assemblies 27.0 ft,Total sand ABSORPTION width (minimum) Fft. upslope and sidestope (sand beyond rockbed, minimum) 93-01ft. Downslope (sand beyond rockbed, minimum) Specific slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 11 ft. upstope berm 3:1 sidestope 12 ft. sidestope berms 4:1 downslope 22 ft. downslope berm 4" inspection pipe 18" cover on top berm 11 _t r, 1.5 Clean sand lift _ _ 1.5 Depth to Limiting Limiting Condition _____________4 Absorotion Width 22 12" cover on sides (6" loamy cap & 6" sopeoil) Note: For 0 to 1% slopes, Absorption WIM is measured from the Bedequatty in both directions. For slopes ?1%, A,bsorpt/op Wdth is measured downhill from the upslope edge of the Bed. Rock Beed: 21.0 yd' or "1.4= 29 ton Mound Sand: 187 yd3 or "1.4= 262 ton Loamy Cap: 72 yd' or "1.4= 101 ton Topsoil: 84 yd3 or *1.4= 118 ton inches under pipe calculation based on 3:1/4:4 slope from top of rockbe. 6' deep 6" deep 8 INSPECTOR CHECKLIST - mound L845 Ltlllan Lane 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 (toad setback: platted: 10' prop line. Metes E bounds: out of road easement, or outer ditch. LAKE/ SLUFF setback: 20' for bluff. Lakes: GD _, RD _, NE Protected wetland Building setbacks: 10' for everything, 20' for dispersal area. WATER LINE under pressure st 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 dose pump 36 gpm 35 head VERIFY PUMP CURVE 6.4 min Oro 9 hr OFF float setting drop 9.1 inches at 25.5 gpi "DESIGNED" 5.6 inches approx float tether length 232.0 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 18 inches. (Jar test: 2" sand leaves < 1/8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope 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 Et fittings) 3.0 ft lateral spacing 7/32 inch perforations 3.0 ft perforation spacing 17.0 downslope 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 Re -use existing tank certification monitoring plan and type well abandonment form - if necessary System Elevations benchmark T r - - - - SH WT Mound r (Grade elevations are existing. If a / loamy cap different final grade is desired it should lateral be shown and described here.) I � bottom rock grade (at upslope rock bed) SHWT (at upslope rock bed) 1 1 1 i! r r r Sewer pipe exiting house Septic Tank Septic Tank (napplicable) Pump Tank Grade Grade Grade Grade Pipe inlet inlet inlet Tank bottom Tank bottom Tank bottom Soil Observation Log Owner formation Property Owner / project: Lillian Stubbs Project Date 2/24/215 Property Address / PID: Proposed Lot 6 Soil Log #1 ❑ Boring ❑ Pit Elevation 1030 Depth to SH WT 18" Soil Survey Information ❑ refer to attadted soil survey Parent matl's: 21 Till ❑ Outvrash ❑ Lacustrine ❑ Alluvium ❑ organic ❑ Bedrock landscape position: ❑ Summit ❑ Sboulder Side slope 0 Toe slope soil survey map units: L22C2 slope 6-14' % direction- downhill Soil Log #1 ❑ Boring ❑ Pit Elevation 1030 Depth to SH WT 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 1OyrV2 Loose Loose Single grain 6-18 Clay Loam X35 1 Oyr5/4 Firm Strong Blocky 18-24 Clay Loam <35 1Oyr5/4 10y4/8,1 -6/10y Firm Strong Prismatic <35 loose loose singlcgrain 35-50 friable weak granular body >50 firm moderate Prismatic Platy rigid strong massive <5 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate Prismatic platy rigid Strong massive Comments: Proposed Lot 6 Soil Log #2 0 gong ❑ Pit Elevation 1025.8 Depth to SHWT 14" Depth (in) Texture fragment% matrix color redox color consistence grade shape 0-6 Topsoil <35 10yrV2 Loose Loose Single grain 6-14 Clay Loam <35 10yr5/4 Firm Strong Mucky 14-24 Clay Loam. 435 10yr5/4 10y4/8,1 -6110y Firm Strong Prismatic <35 35-50 Firm Strong Prismatic >50 <35 loose loose single grain 35-50 friable weak granular blacky >50 firm moderate Prismatic Platy rigid Strong massive Proposed Lot 6 Soil Log #3 Boring ❑ Pit Elevation 1022.1 Depth to SHVV7 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 Topsoil <35 10yr3/2 Loose Loose single grain 12-18 Clay Loam <35 10yr4/3 Friable Strong Blocky 18-24 Clay Loam <35 10yr5/4 10y4/8,1 -6110y Firm Strong Prismatic 45 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic Plah- rigid Strong massive <35 loose loose single grain 35-50 friable weak gmm,lar blocky >50 firm moderate Prismatic Only rigid strong massive I hereby certify this work was completed in accordance with A47V 7080 and ay local reg's. Rusty OIson's Soil & Perc 810 er Signature Company License 4 Proposed Lot 6 Soil Log #4 2 Boring ❑ Pit Elevation 1022.4 Depth to SHWT 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-12 Topsoil 45 1Oyr3/2 Loose Loose Single grain 12-18 Clay Loam 45 1Oyr4/3 Friable Strong Blocky 18-24 Clay Loam <35 10yr5/4 10y4/8,1 -6/10y Firm Strong Prismatic X35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate Prismatic Piety rigid strong massive X35 loose loose singlegrain 35-50 friable weak granular blocky >50 firm moderate Prismatic Piety rigid Istrong IMMive Proposed Lot 6 Soil Log #5 0 ung ❑ pit Elevation 1030 Depth to SHWT l $" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Loose Loose Singlegrain 6-18 Clay Loam 45 10yr5/4 Firm Strong Blocky 18-24 Clay Loam 45 1Oyr5/4 IOy4/B,1fi/10y Firm Strong Prismatic 45 loose loose single grain 35-50 friable weak grenular blocky >50 firm moderate Prismatic platy y rigid strong massive <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive Ihereby cer ' this work was completed in accordance with MN 7080 and any local reqs. Rusty Olson's Soil & Pere 810 estgner Signature Company License R Soil Observation Log www.SenticResourcc.cmn vers I) Owner Property (honer / project: Lillian Stubbs Project Date 2/24/215 Property Address / PID: Posed Lot 6 Soil Log #6 0 coring ❑ Pit Elevation Depth to SHWT 14" Soil Surrey Information ❑ refer to attached soil survey Parent matl's: Q 'nil ❑ Ouhywh ❑ Wwstrine ❑ Alluvium ❑ Organic ❑ aedrodc landscape position: ❑ Summit ❑ Shoulder 2] Side slope ❑ Toe slope soil survey map units: L22c2 slope 16 % direction- downhill Soil Log #6 0 coring ❑ Pit Elevation Depth to SHWT 14" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-6 Topsoil <35 10yr4/2 Loose Loose Singlegrain 6-14 Clay Loam <35 10yr5/4 Firm Strong Blocky 14-24 Clay Loam X35 10yr5/4 10y4/8,1 -6/10y Firm Strong Prismatic <35 loose loose single wain 35-50 friable weak granular blocky >50 firm moderate Prismatic platy rigid strong massive < 35 loose loose singlegrain 35-50 friable weak granular blocky �5© firm moderate prismatic platy rigid strong massive Comments: ldw av '@I" 'OHBd 3E)"Bnd 0'l L'S .9 05:4 5£ L 0'17 L'£ 1.9 3'£:L 644 TV L'£ .9 U4 LS:ZL aled oaad OZH ul doicl ylda(j awll awil sayoul 9 sisal 6uunp wol;oq aloy anoge yldap aalem wnwlxeVy uoydtg ollewolnb sino4 ti iseal le jol aloy ul 4ldap jalem;o sayoul Z lseal le ulelulew of pasn po- wolloq 9104 anoge sayoul ZL 6u!Illlaalem lB1l!u!;o gldep SNL£/L 6u!llg ialem le1llul to ale(] :say3um Z aloe 10 w0140q ul lanej6l0 yldaa spu)i :Venn apls 6ulyolejos )o poglavv glsjAo L weol Aela uenoi8 ZlbaAol weol umoaq )peQ alnlxal IIoS ..9-0 sayoul"yldaQ 8104 lsal Waal elep vos sayoul —,.9i eloy 10 ialawela 'sayoul — Z l wolloq slog fo glda0 SL/L£/L paiedeid sem aloq 9le0 L :jagwnu aloH 91ol :uolleool 9 LILIZ u0 'VY'V OS: L L le 6ulUels 'oaad s,uoslo Alsn�l :Aq epew s6ulpeaj isal 6ullelooJad 01SX01-1 lae4S elea lsal uopelooJad Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty O€son's Perc. starting at 11:50 A.M. On 2/1/15 Location: Lot 6 Hole number, 2 Date hole was prepared 1/31/15 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 clay loam 10yr5/4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1/31/15 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 12:58 1:13 6" 3.5 4.3 1:18 1:33 6" 3.3 4.5 1:36 1:51 6" 3.3 4.5 AVERAGE FERC. RATE 4.4 MPI rdw £'t? BIVr J '0aad BOY2QAV £'ti S'£ .19 ZS: E L£: E £'b S'£ A Z£:E LV Z'17 9'£ u9 bE:E 69:Zl a#ea oJad OZH ur dojg yldaQ awi.L awrl savour 9 sisal 6uunp wol#oq 8104 anoge yldep JaleM wnwlxeW uoydrS ogewolny smog -Vlseal le !ol aloy ur yldap Jelenn jo savour Zi }seal le ulelulew of pasn po4lalN *wolloq aloy anoge sayoul ZE OU!llU Jalenn lelllur to 4ldap S El4£ll 6ulpr3 Ja# IM lellru!;o ale® :sayow Z 910410 wouaq UJ JOABA }o yldaa alru?f :11eM apps oulple.Jas to poylaW Z1SaAot u eol umoaq )Iaea "U-0 aJnlxal IroS sayaur 'yldaa :0104 isal W04 elep 1r0S -sayoul 7,9— 010q JO Jalawel0 'sayaul 4ZE wolloq cloy 10 ylda0 SE/E£/E paJedaJd Senn cloy a#ea S :jegwnu aloH 9101 :uol#e307 S EI E/Z uO ' W'V OS: E E le 6ullJels 'aJad s,uosl0 Alsn�l :Aq apew s6ulpeaJ lsa# 6ur#eiooaad 0 LWO11 hays elea isal uonelowed Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 11:50 A.M. On 2/1115 Location: Lot 6 Hole number: 4 Date hole was prepared 1131115 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 wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 1131115 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 1:00 1:15 6" 2.6 5.8 1:16 1:31 6" 2.5 6.0 1:38 1:53 6" 2.5 6.0 AVERAGE PERC. RATE 5.9 MPI