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HomeMy WebLinkAbout11-15-2018 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 November 15, 2018 Chris Bollis 210 Kintyre Lane Orono, Hennepin County 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 16-26 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 13 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 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. 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. Sincerely, Joseph J. Olson it snALC- --S89-18"45"E 1.37.00 En ioo&— IODO 1012 3i, ry -T— /091. 0'1013.4 S89'18'45"E 5�1 �TNC- 1018 �11 ell "o"int I Ar Vj t%.L. C) 7.1) V� 2f"o off, 3y Rp 1001, a 8 1036.3 SOUTH LINE OF THE NW1 14 OF SE174 N89*18'45"W 652.09 I VVII /I IJ -T- is MOUN[l SYSTEM DESIC'N Iype� Bedroom, Average percolation rate f r'=' gal day sq_ft. Oftreatrnent area L_?o (/I£t ft_ width = ft_ length of bed area % _IXOT L ,��`►�ti�Y #'Ifs *ilii i4� �.61h.gyp I:aic piw XI -C .e" * a"A OIC. SOPJNG ELEVATIOMS THIS ELL TH.14a4 EL Tan# ;,' ftm #BMW ,? Eases 44 EL - �ao7o +ftm waw Side slope run-, to I x ' - height = �r ft_ x eft_ Lawn area. * fmo Was. - Twasat welt fam out — Clean rock needed plus 200 cu -yds. Coarse washed san 3 l ))cu. Yds_ Average sand depth Tent amet M P*M* 11005 Sandy loam `- cu.yds., Topsoil h:. ^' r-u.yds. plus SOY !1 cu. Yds. ��! bt&t Number of tanks _ . IS` tank 21als_ 2"d tank --N=gals., Pump chamber capacity:: ' gals_ gals. /100 lineal feet of ,I " dia_ Supply pipe, lineal feet needed &, `LS Distribution pipe :� " dia- _1 linea[ feet, 73a-- dia. perforations _` d, h apart Float set at 19 ? gals., 4 times per clay Pump curve/ ruin_ J 7 feet head pressure. { OPEP.TX*F;: NR 1 c -lc) kip i {RC LA -FG ` PPi+onrr�vi1 /�OMnWMns .".}81:8 L/JL4-f,! 17h. 763-498-8779 Rush +I n*UjG and P 140a" Tev-11 2011 purple code Mound Design www.SepticResource.com (vers 15.2) Property Owner: Chris Bollis Site Address: 210 Kintyre Lane Comments: Primary Site Date: 11/14/2018 RID: N/A instructions: = enter data = adjust if desired = computer calculated - DO NOT CHANGE! 1)bedroom Type �I 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 5) 1.2 GPD/fe mound sand loading rate contour loading rate of 12 req's a min 62.5 ft. long rockbed 6) 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 s) laterals 61.0 feet long 21.0 perfs / lateral63 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 It spacing, It 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 11) 2.00 inch diameter laterals must be used to meet "4x pipe volume" requirement 2.00 3x 131 55 feet of 2.0 inch supply line leads to =gatLons of drainback volume (Tip: "top feed" manifold to control the drainback) 14) 197 gallons TOTAL pump out volume (treatment + drainback) �s) feet vertical lift from pump to mound laterals, leads to a: 16) 36 GPM @ 17 feet of head, Pump requirement (note: >50gpm may require an extra 3-6' of head) n) 750 gal Dose tank (code minimum) 1250 gal Dose tank (design size / LUG req'd) at 25.44 gpi leads to a 18) 7.7 inch swing on Demand float, or timed dosing of5.51hrs min ON (confirm pump rate with drawdown (this delivers Average flow, =70% of Peak design flow) OFF test and adjust as necessary) 19)[flinches 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 F33:] inches to "Hi Level" float if time dosed 22) 664 gallons reserve capacity (after High Level Alarm is activated) u. 0.45 gpd/fe 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 12 percent site slope (0-20% range) 12 (% downslope site slope, if different than upslope) 16 inches, or 1.3 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 inches of 50% soil credit. Giving a: 20 inch, or 1.7 ft. Sand Lift Mound CRITICAL FOR FUTURE CERTIFICATIONS!!! 27A ft.Totdl ABSORPTION width (with sand beyond rockbed as follows:) 0.0 ft. upslope and sideslope 17.D ft. Downslope Individual slope ratios give BERM widths (topsoil beyond rockbed) of: 4:1 upslope ratio 10 ft. upslope berm 3:1 sideslope 15 ft. sideslope berms 3:1 downslope 25 ft. downslope berm Overall Dimensions: Li� ft. wide by 63.0 ft. long Rock bed ft. wide by L93 ft. long Mound footprint 4" inspection pipe (— 18" cover on tap Upslope berm I �O 1.7 1 1.3 Lirrllt'r g Corlditiorf Clean sand lift Depth to Limiting ---------------- Absorption Width Downslope berm 25 12" cover on sides (6" loamy cap & 6" topsoil) 27.0 - - { -. Mote: For 0 to 1% slopes, Absorption Width is measured from the Bedequatly in both directions. For slopes >1%, Ahsorptron Width is measured downhill from the upstope edge of the Bed Rock Bed: 1a.a 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) 30.2 up + 113.0 downslope + 16.6 ends + 52,9 under rock = 255 yd' or *1.4= 357 ton plus 20% Loamy Cap: 41 fit. by 89 ft. 6" deep, plus 20% gives 36) Topsoil: F-87203 or *1.4= 115 ton 45 ft. by 93 ft. 6" deep, plus 20% gives 93 yd' or *1.4= 130 ton I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws. Rusty Olson"s Soil Et Perc 810 11/14/2018 Designer Signature Company License# Date Installer Summary 2250 ,gallon Septic tank (minimum) Tank options: none aux urger LanK WMI muMpte camp] CdnKs 1250 gallon Dose tank (minimum) at 25.49 gpi 36 GPM C 17 ft. of head, Pump required 7.7 linch 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 a =hours OFF time 20 inches from bottom of tank to "pump ON" float, or 12 inches to "timer ON" float 23 inches from bottom of tank to "Hi Level Alarm" or 1 33 linches to "Hi level alarm" if time dosed 55 ft. of 2.0 inch supply line with end feed manifold connection (Tip: "top feed" manifold to control drainback) 20 inch, or 1.7 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 No jEfftuent filter ft alarm 3 clean out a 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 10 ft. upslope berm 3:1 sideslope 15 ft. sideslope berms 3:1 downslope 25 ft. downslope berm 4" inspection pipe 1$" cover on top U gslc�pe berm 10 _ i � I . 1.7 11 Clean sand lift —C, miting Condition _ --------------- Depth to Limiting Absorption Width 25 12" cover on sides (6" loamy cap & 6" topsoil) Note: For 0 to 1% slopes, Absorption Width is measured from the Bedequally in both directions. For slopes >1%, Absorption W&M is measured downhill from the upslope edge of the Bed. Rock Bed: 21.0 yd or*1.4= 29 ton Mound Sand: 255 yd or *1.4= 357 ton Loamy Cap: 82 yd or *1.4= 115 ton Topsoil: 93 yd or *1.4= 130 ton 6 inches under pipe calculation based on 3:1/4:1 slope from top of rockbe� 6" deep 6" deep INSPECTOR CHECKLIST - mound L1U Kintyre 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 Road setback: platted: 10' prop line. Metes iY bounds: out of road easement, or outer ditch. LAKE / BLUFF setback: 20' for bluff. Lakes: GD _, RD _, NE s. Protected wetland _. Building setbacks: 10' for everything, 20' for dispersal area. WATER LINE under pressure se 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) Mf P, 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 17 head VERIFY PUMP CURVE 5.5 min ON 9 hr OFF float setting drop 7.7 inches at 25.5 gpi "DESIGNED" 4.9 inches approx float tether length 197.0 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, stoped 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 20 inches. (Jar test : 2" sand leaves < 1 /8" silt after 30 min) Absorption Sand beyond rock 0.0 upslope 17.0 downslope El Bermed topsoil beyond rockbed 10 upslope 15 sideslope 25 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 e 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 �Re-use existing tank certification monitoring plan and type well abandonment form - if necessary tuolJoq It1e1 ;alul tuolloq NUel aelul tuoaloq � Uel jalul adid apeJE) apeic) apes ape�� duel dwnd (alqe)ldde p) duel 7ildaS duej ]j3daS asnoy Su zixa @did lann@S (paq m)aj adojsdn xe) 1MHS [paq aljoi adopsdo ;e) apeal lona woRoq jeialell deo Aweol iMHS - - pu noyy (-aaau paq!Jasap pue umogs aq pinogs 3! pwisap si apeag leUg xuaaag p e4l •2uijspx9aae staaijenala apeJD) jaeuugauaq SUOIJeAal] WaISAS Lot 1, Soil Log #2 Boring ❑ Pit Elevation 1006.9 Depth to SHWT 18" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-8 Topsoil <35 1 Oyr4/2 Loose Loose Single grain 8-18 Clay Loam <35 1Oyr5/4 Firm Strong Blocky 18-'6 Clay Loam <35 1Oyr5/4 I Oy4/8,1-6/1 Oy Firm Strong Prismatic <35 35-50 Finn Strong Prismatic >50 <35 loose loose single grain 35-50 friable weak granular blocky >50 finn moderate prismatic platy rigid Istrong massive Lot 1, Soil Log 43 ❑ Boring ❑ Pit Elevation 1002.8 Depth to SHWT 26" Depth (in) Texture fragment,% matrix color redox color consistence grade shape 0-10 Topsoil <35 1Oyr3/2 Loose Loose Single grain 10-18 Loam <35 1Ovr'4,2 Friable Strong Blocky 18-26 Clay Loam <35 10yr4/4 Firm Strong Blocky 26-30 Clay Loam <35 1Oyr5/4 10y4/8,1-6/1Oy Finn Strong Prismatic <35 loose loose single grain 35-50 friable weak granular blocky >50 firm moderate prismatic platy rigid strong massive ! hereby certify this work was completed in accordance with MN 7080 and any local reqs. Rusty Olson's Soil & Pere 810 OQ'g'ner Signature Company License # Lot 1, Soil Log 94 ❑Q Boring Q Pit Elevation 1002.8 Depth to SHWT 20" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-10 Topsoil <35 I Oyr4/2 Loose Loose single grain 10-20 Clay Loam <35 IOyr5/4 Firm Strong Blocky 20-30 Clay' Loam <35 1Ovi-5i4 IOy4/8,1-6/10y Finn 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 >SQ fixm moderate prismatic platy rigid strong massive Lot 1, Soil Log #5 ❑� Boring ❑ Pit Elevation 1007 Depth to SHWT 20" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-10 Topsoil <35 1 Oyr4/2 Loose Loose single grain 10-20 Clay Loam <35 10yr5/4 Firm Strong Blocky 20-30 Clay Loam <35 1OyT5/4 I Oy4/8,1-6/1 Oy Firm Strong Prismatic <35 loose loose single grain 35-50 friable weak granular blocky >50 fnm moderate prismatic platy rigid strong massive <35 loose loose single grain 35-50 friable weak granular blocky X50 firm moderate prismatic platy rigid I strong I massive I hereby rtify this work was completed in accordance with MN 7080 and any local req's. Rusty Olson's Soil & fere 810 esigner Signature Company License # Soil Observation Log www,SeptieResource.com vers 12.4 Owner Information Property Owner / project: $ollis Proerty Date 6/3/2015 Property Address / PID: Lot 1, Soil Log #6 ❑Zr Boring ❑ Pit Elevation 1002.8 Depth to SHWT 16" Soil survey Information ❑ refer to attached soil survey Parent matl's: El Till ❑ Outwash ❑ Lacustrine ❑ Alluvium ❑ Organic ❑ Bedrock landscape position: ❑ Summit ❑ Shoulder E] Side slope ❑ Toe slope soil survey map units: L22D2 slope 13 % direction- downhill Soil Log #6 ❑Zr Boring ❑ Pit Elevation 1002.8 Depth to SHWT 16" Depth (in) Texture fragment % matrix color redox color consistence grade shape 0-10 Topsoil <35 10yr3/2 Loose Loose Single grain 10-16 Clay Loam .=3; 1Oyr4/4 Firm Strong Blocky 16-24 Clay Loam <35 10yr5A 10y4/8,1 -6/1.0y Firm Strom prismatic <35 loose loose single grain 35-50 friable weak granular blocky >5© 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 1:05 P.M. On 6113115 Location: Lot 1 Hole number: 1 Date hole was prepared: 6112115 Depth of hole bottom _12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-10" [lark Brown Loam 10yr4/2 10"-12" Brown clay Loam 10yr514 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6112/15 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 Time Time Depth Drop in H2O Perc Rate 1:19 1:49 6" 1.5 20.0 1:56 2:26 6" 1.5 20.0 2:27 2:57 6" 1.5 20.0 AVERAGE PERC. RATE 20.0 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty ©lson's Perc. starting at 1:05 P.M. On 6113115 Location: Lot 1 Hole number: 2 Date hole was prepared: 6112115 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 10yr412 8-12 Brown clay Loam 10yr5l4 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6112115 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 1:20 1:50 6" 2.3 13.0 1:55 2:25 6" 2.2 13.6 2:28 2:58 6" 2.2 13.6 AVERAGE PERC. RATE 13.4 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty Olson's Perc. starting at 1:05 P.M. On 6113115 Location: Lot 1 Hole number: 3 Date hole was prepared: 6112115 Depth of hole bottom —12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-10" Dark Brown Loam 10yr4I2 10"-12" Brown clay Loam 10yr514 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6112115 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 ime Time Depth Drop in H2O Perc Rate 1:21 1:51 6" 3.2 9.4 1:54 2:24 6" 3.1 9.7 2:29 2:59 6" 3.0 10.0 AVERAGE PERC. RATE 9.7 MPI Percolation Test Data Sheet Lic.#810 Percolating test readings made by: Rusty ©lson's Perc. starting at 1:05 P.M. On 6113115 Location: Lot 1 Hole number: 4 Date hole was prepared: 6112/15 Depth of hole bottom _12"_ inches, Diameter of hole _6"_ inches. Soil data from test hole: Depth, inches Soil texture 0-10" Dark Brown Loam 10yr412 10"-12" Brown clay Loam 10yr514 Method of scratching side wall: Knife Depth of gravel in bottom of hole 2 inches: Date of initial water filling 6112115 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 1:22 1:52 6" 3.5 8.6 1:53 2:23 6" 3.4 8.8 2:30 3:00 6" 3.3 9.0 AVERAGE PERG. RATE 8.8 MPI