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Home My WebLink About1993-07-07 Septic System DesignSJR TESTING, INC. Richard Kelly 2135 Colin Dr. Orono, Henn. Co., MN Steven B. Schirmers — MPCA Cert. No. 627 951 Katydid Lane NE • St. Michael, MN 5537 July 7, 199 497-3566 This On -Site Sewage Treatment System is Designed for a Type 1, four bedroom home in accordance with the Minnesota Pollution Control Agency Chapter 7080 and local ordinances. The soils this site are SCS soil . m.appef - FeB - heyder sandy loam. A seasonally 'ii9h water table •.,raa located at 32" to 68", (mottled soil) . A Shallow Trench Sys'_am may be installed, pre•ss•.i_ized typical of a mound Slsteir kith a miniinu.n of 12" of cover over th(e c•ck. This site has an existing failing sy;Uem due to the seasonally high water table. The existin•3 tank is old & irust be abar..?orne pumped & filled with soil. The soils at a: depth .--.f 12" have a peri:olati-gin rate 3veragin-,, 5.0 min/inch. A pumping chamber %gill ne_d to be installed to lift the effluent to the treatment area. The manifold an.] s1;1�t'lf line pipe inust drainage to tine a gimping chamber. The distribution pips s shall have ti-teic en.'_s caCp2d. 3e :3ure the rock and said Fill material ar- clean. Tha sod l..yar bal,-',.. t: -ie entire mounded area must be turned over, just break up the sod, 1;= s•are not to over work. The power supply and switches must be located outside the manhole and pumping chamber in a weather proof enclosure. A warning device must be installed with a light and sound device, this is in case of a pump failure. Mercury floats are a good method. All neighboring wells are located greater than 75' away from the proposed treatment area. CONT'D Richard Kelly 2135 Colin Dr. Orono (2) Keep all heavy equipment off of the proposed treatment area before and after construction. The treatment area should be marked off before construction. This Design is not valid & the System will need to be relocated if failure to protect the areas proposed for On -Site Sewage Treatment occurs. 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 waste & toilet tissue should be disposed of into the septic tanks. Garbage disposals are not recommended. Smaller amounts of laundry soaps, dish soaps, cleaning agents, etc. are better for the system. Antibacterial soaps & chlorine agents may kill the bacteria needed to treat septic effluent properly. Additives are not recommended, they may cause harmful damage to your system. Recommend to pump & clean your tanks by a certP:ied pumper every year if you have 1 tank & every 2 years if you "lave 2 tanks to insure proper maintenance. L` Steven B• SchirmersDS SBS/ds 0 11 C rt? b19 0 R 0 N 0 X J I L r 'i }�! A REVIEW R -.%I I Fl - r C rt? b19 0 R 0 N 0 X J I L r 'i }�! A REVIEW R -.%I I Fl _A -'fll ED 1-01-silpll tl'; Jag,* Q)l , A L TlhIF.Z;- N(a A rt 5.1 :3 co 0 5L. (D jr, 0 0 i -4 0 0 o y! ri 0 a rr CL 0.) rr m I; r O C C to G m oT ip • , n z a m3 3m i m O N a ? 1 m a �o m n 0 f O N A: r ry o o r O 10 o 5' o m ttn (nr- _ rJ �i O Z n- o O' e► Co J U I J 7 W a I 3 o 3 p 3 a mv i. cn a ° •.. O O CO c (� o n r — z or En 3 v 0 5' I 0 o o '� 0 0 � c O - 5 p� v o s y g3m 3 3 3 g �C O N IC a �3 o B i� d g n t0 o 3 o o$ A o t� 33 3 3 4, r o y"1 .✓, f0 Irl . i� � � S tJ 7 C"�. N � - 0 t� V iC z 10 n t L r t o aR m �F n a r C, W. a- o p a'V tD y :F j K_ a A n r D I--- * o O O N O y 7 _ o C II O f S A O ff. cr O vo 0 Ii c � Gti sl ; I CL.o 1- t -r 0 1 uj U) O_ mo n n fTl f m cx ==2Co CD M� r fmI ` , 7 Ncr •" Y _ O D -� AD i d 2 � a� O � m Z f IK f II C. CL Ln J mi Z r Y INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET FLOW A. Estimated AO U gpd measured x 1.5 = - gpd SEPTIC TANK VOLUME B. C O gallons SOILS (Site evaluation data) C. Depth to restricting layer = t1.0 ' - Ll ' - t r ' ' feet D. Maximum depth of system C - 3 ft = feet E. Percolation rate t MPI F. Soil Sizing Factor Llr7 sq ft/gpd (See table 3) L o? -1 + TRENCH BOTTOM AREA H. For trenches with 5 inches of rock below the pipe: A x F = x = _ sq ft of bottom area 1. For trenches with 12 inches of rock below the pipe: AxFx0.8=&� xj. t-7x0.8=clv- I sgftofbottom area-ilo.',t�E1` J. For trenches with 18 inches of rock below the pipe• AxFx0.66= x x0.66=_sq ft of bottom area K. For trenches with 24 inches of rock below the pipe: AxFx0.6= x x0.6=_sq ft of bottom area BED BOTTOM AREA L. For seepage beds with 6 or 12 inches of rock below the pipe; 1.5xAxF=15x_x_=_sgftofbottom area ROCK VOLUME IN CU F'1; M. Rock depth below distribution pipe plus 0.5 foot times bottom area: M =Rock depth (ft) +;6 inches x Area (H, 1, J, L or K) („LO ft+O5ft) x uf'I =11y�L Cu ft ROCK VOLUME IN CU YDS N. Volume in cu ft divided by 27 M+27=cuyds11yS+27=L4% cuyds ROCK WEIGHT O. Cubic yards times 1.4 = tons N x 1.4 = tonsImo'. x 1.4 = dons DISTRIBUTION tzs � (Check one based on slope) Bed (less than 6% slope) Trenches l Drop boxes (any slope) — Distribution box (level to slightly sloping) TRENCH LENGTH P. Select trench width = ' ft Q. Divide bottom area by trench width: (H. I, J, or K) + P = lineal feet ,r + linea, t LAWN AREA R. Select trench spacing, center to center= `, feet S. Multiply trench spacing by lineal feet R x Q = sq ft of lawn area x r sq ft T_tyOUT (Use other side) 1. Select an appropriate scale; one square = feet. 2. Show pertinent property boundaries, right-of-way, easements. 3. Show location of house, garage, driveway, and all other improvements, existing or proposed 4. Show location and layout of sewage treatment system. 5. Show location of water supply well. 6. Dimension all set backs and separation distances. Estimated Sewage Flows in Gallons per day (bpd) Number Minimum Liquid Liquid capacity with Bedrooms Capacity of Type I Type B Type BI Tyypc Bedrooms ism 4 or 6 1510 Iv 2 300 225 180 0.1 %o5 3 450 300 218 Piro sand • 4 600 375 256 ori or the 5 6 750 900 450 525 294 332 ;n TMI L 7 1050 600 370 111 8 1200 675 408 1 columm Scptic Tank Capacities, In gallons Number of Minimum Liquid Liquid capacity with Bedrooms Capacity garbage disposal 2 or less 750 1125 3 or 4 1000 ism 4 or 6 1510 2250 7, 8 or 9 2000 3000 over 9 0.1 %o5 ...... Soil Characteristics and Required Areas for Sewage Trealment Parolation Rate in Square Gallons Ntinutut Inch Soil Texture reaper per day pe+ (MJ'I) gallon per aquam taut da Fater than 0.1 • coarse Sud ---- -- 0.1 %o5 Sand 0.13 1.20 0.1 to 5 Piro sand • 1.67 060 6 to 15 Sandy Loam0.79 J6 to 30 Loam 1.67 060 31 to 45 -Silt l.ea 00 0.50 46 to 60 Clay Laatn 220 0.45 Slone than 60 ••• Clay ---- ---- T 2 inch Cover t 4 inch Pipe 6-24 inch Rock Below the 1' I A. Determine pump capacity: Gravity Distribution END PERFORATION OF A PERFORATED LITERAL 1. Minimum suggested is 600 gallons per hour (10 gpm) to stay ahead of -aea Ewer water use rate. TepesR 2. Maximum suggested for delivery to a drop box of a home system is 2,700 ,� Lnrar of G001911116 rabic (of ,-- gallons per hour (45 gpm) to prevent build-up of pressure in drop box. Lamy sena L.,.. Ma rp« ,.r a �,..,,..,., Pressure Distribution 3. a. Select number of perforated laterals b. Select perforation spacing = 9 • b ft. c. Subtract 2 ft. from the rock layer length. -w�-2fL= ft. Pow M P«Ireltew d,1hA Ila lrenrel�, \RKkw,.- Mpr we by 1t : IL �/� f',w N lnat 12' 1. Ed9. •z S S- y ly ;Qlo ield of ,wee Lara `V.., _ sF `1. 1. 1L ;Wren -� :: 1W' 01 ,1. �N.a tl L'A'ti . leo - Lt . 1: I G _ Clem 5WW Lvrer 21 010, 1 Set, heprlr Sce11IN is fie,ee Nmk%@ Send Lery d. Determine the number of spaces between perforations. Length perf. spacing = ft. + _ ft. = spaces e. spaces + 1 = perforations/lateral f. Multiply perforations per lateral by number of laterals to get total number of perforations. x - perforations. tom.Pe c a . g• -pec,, xpe1 SELECTED PUMP CAPACITY l -i -) gpm B. Determine head requirements: �l. Elevation difference between pump and point of discharge. J / 0 feet 2. If pumping to a pressure distributinn system, add five feet for pressure required at manifold feet 3. Friction loss a. Enter friction loss table with gpm and pipe diameter. Read friction loss in feet per 100 feet from table. F.L. = D • 'z� ft./100 ft of pipe b. Determine total pipe length from pump to discharge point. Add 25 percent to pipe length for fitting loss, or use a fitting loss chart. Equivalent pipe length -1.25 times pipe length = 12 0 x1.25= /(-'�) feet c. Calculate total friction loss by multiplying friction loss in ft/100 ft by equivalent pipe length. Total friction loss = ) L- 'D x J , y +100 = feet 4. Total head required is the sum of elevation difference, special head requirements, and total friction loss. /0 + r + `(' (1) (2) (30 TOTAL HEAD feet C. Pump selection _-)l. A pump must be selected to deliver at least t -I 7 gpm (Step A) with at least ;� 0 feet of total head (Step B). TABLE OF PERFORATION DISCHARGES LN GPM Head Perforation diameter (incus) 10 f/A 1/, 1.Oa 056 0.74 is OA9 0.90 2.Ob 0.80 IN 2S 0.89 1.17 3.0 0.98 1.28 4.0 1.13 1.47 5.0 1.205 1.65 Wait 1.0 foot of head for residential systems. bUse 2-0 feet of head for other establishaunts Pipe length Point of Discharge Elevation DiffcwncT", Ptunp F -18b 1.5 inch 2.0 inch 3.0 inch gPrn Frialal las per 100 ft of pipe 10 0.69 0.20 12 0.96 0.28 14 1.28 0.38 16 1.63 0.48 18 2.03 0.60 20 2.47 0.73 0.11 25 3.73 1.11 0.16 30 5.23 1.55 0.23 35 7.90 2.06 0.30 40 11.07 2.64 0.39 45 14.73 3.28 0.48 50 3.99 0.59 55 4.76 0.70 60 5.60 0.82 CL'RTI Il'AT101,' 4 00b2 Location Ar Project Richard Kelly, --21-35 Colin nr_, Orono Borings made by S -P Testing, Inc. Steve Schirmers - Date 7-6-93 Classifiction System: AASHO USDA -SCS X Unified ; Other Auger used (cheek two): Hand X , or Power , Flight , or Bucket X Depth, Boring number Depth, Boring number 2 in in feet Surface elevation feet Surface elevation 97.0 0 - --- — 0 Topsoil dark brown Topsoil dark brown 1 _ loam 1 - loam 0 - 1'8" 2 - 2 0 - 214" Brown sandy loam 3 - 3 - �� sandy loam 4 _ 118" - 41 -MOTTLED 4' 4 _ Rusty4, _ 4'4" ollgambr�wn Rusty gray brown sandy loam 4'4" - 5-1/2' 5 - 5 - 2'4" - 4'10" -MOTTLED 4' Rusty gray brown sandy loam Rusty gray brown 4110" - 5'10" 6 _ loamy sand 5-1/2' - 6'4" 6 y qrgy Rust 5'10" - 6'4" m@Ulu�ORAX 7 - 7 - 8 End of boring at 6'4" feet. Standing water table: present at 4-1/2, feet of depth, 75-1/2 hours after boring. Not present in hole Mottled soil: Obsei ' at 4' feet of depth. Not pre!-nt in hole Comments: End of boring at 6,4„ feet. Standing water table: present at 518" feet of depth, 25-1/2 hours after boring. Not present in hole Mottled soil: Observed at 4110" feet of depth. Not present in hole Comments: o' 1 CE'HTIPICATI014' .! UQU I / Lsu ; o :;u1iu1•inga Location •or Project gichard Ke11-y-,--213S rnIin Dr., Orono Borings made by :3-P Testing, Inc. Steve Schirmers _ Date 7-5-93 Classifiction System: AASHO USDA -SCS X Unified Other Auger used (ch -c!, two): Band X or Power Flight , or Bucket X Depth, Boring number 3 Depth, Boring number 4 in in feet Surface elevation 97,0 feet Surface elevation 95.2 0 - - — 0 - -- --- Topsoil dark brown Topsoil dark brown loam loam 0 - 10" 0 - 1'8" 2 - Brown sandy loam 2 - Brown sandy loam 3 - 118" - 31 3 - Brown loamy medium sand 4 - 3' - 4'2" -MOTTLED 412' 4 - 10" - 412" -MOTTLED 412 5 - I Rusty gray loamy I 15 - I Rusty brown sandy medium sand loam 6 - I 4 1 211 - 61411I I 6 - I 4'2" - 6'411 7 - 8 - End of boring at 6 1 411 feet. Standing water table: present at 518" feet of depth, hours -after boring. Not present in hole - Mottled soil: Observed at 4'2" feet of depth. Not present in hole_ Comments: 7 - 8 - End of boring at 614" feet. Standing water table: present at feet of depth, hours after boring. Not present in hole X Mottled soil: Observed at 4'2" feet of depth. Not present in hole Comments: CEIMFICAT101. J U062/ I,c,_�:; •71 :>c7� I I;��t iny:; Location or Project Richard KPI lzvp 2119; Cnl in Dr., Grog,,. Borings made by S -P Testing, Inc. Steve Schirmers _ Dat,;— 7-5-93 Classifiction System. AASHU USDA -SCS X Unified ; Other Auger used (check two): (land X or Power Flight , or Bucket X Depth, in feet 0 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - Boring number Surface elevation Topsoil dark brown loam 0 - 2'2" Brown sandy loam 2'2" - 4'10" -MOTTLED 4110 Rusty gray brown sandy loan 4'10" - 5-1/2' Rusty gray silty loam 5-1/21 - 6' End of boring at 6' feet. Standing water table: present at feet of depth, hours after boring. Not present in hole X Mottled soil: Observed at 4'10"feet of depth. Not present in hole Comments: Depth, in feet 2 - 3 - 4 - 5 - 6 - _7 - Boring number 6 Surface elevation 94.6 Topsoil dark brown loam 0 - 2'10" Dark2' 10" - 314" brunsan Brown sandy loam 3'4" - 5'8" -MOTTLED 5' Gray brown sandy loam 5'8" - 6' End of boring at 6' feet. Standing water table: present at feet of depth, hours after boring. Not present in hole X Mottled soil: Observed at 5'8" feet of depth. Not present in hole Comments: VA b" CERTI VICATION 4 UUf,17 l'o- ; oil !;oil Location yr Project_ Richard Kelly. 2135 Colin Dr. Orono Borings made byg-P T_esting, Inc. Steve Schirmers Date -7-5-93 Classifiction System: AASH0 USDA -SCS X Unified ; Other Auger used (check two): hand X or Power Flight , or Bucket X Depth, in feet 2 - 3 - 4 - 5 - 6 - 7 - 8 - End of boring at 614" feet. Standing water table: present at feet of depth, hours after boring. Not present in hole Mottled soil: Observed at 2'8° feet of depth. Not present in hole Comments: End of boring at feet. Standing w.ter table: present at feet of depth, hours after boring. Not present in hole Mottled soil: Observed at feet of depth. Not present in hole^ Comments: CEP .4-00627 PERCOLATION "TESL' DATA SHEET Percc;ation test readings made by S–P Testing, Inc. _007-6-93 starting at 12 : 17 P.m. ,d ) 2135 Colin Dr. 1 7-5-93 Test hole location ., I [tile number— - , llatc hole was prepared Depth of hole bottom 12 inches. Diameter of little 6—inches Soil data from test hole: Depth, inches Soil texture 0 -- 12" Topsoi 1 dark brown loan Method of scratching sidewall Knife Depth of gravel in bottom of hole 2 inches 7-5-93 10:30am12 Date and hour of initial water filling , Depth of initial %%atcr filling inches above hole bottom Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon 6 Maximum water depth above hole bottom during test inches ,'inhe "Tinhe dnterval, minutes Measurement, inches Drop in wat--r level, inches Percolation rate. minutes per inch Remarks 12:07 12 17 12 : 32 " – __ „ _ 351 4.1 ,o It 1:01 — oftoAL3----- 61 4 A to of Percolation rate = 4 ' 3 minutes per inch. CERT.400627 PERCOLATION TEST DATA SHEET a.m. Percolation test readings made by S–P Tact i nn _---Inc on 7-6-93 —starling at 7 . 1 R , P. 'J.") Test hole location 2135 Colin Dr. IMe number 2 Datc hole was prepared 7-5-93 Depth of hole bottom 12 inches. Diameter of hole 6 inches Soil data from test hole: Depth, inches 0 - 12" Method of scratching sidewall Soil texture Topsoil dark brown loam Depth of gravel in bottom of hole 2 ----Inches 7-5-93 10:30am 12 Datc and hour of initial water filling , Depth of initial water filling 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 test 6—inches ime time interval, minutes Measurement, inches Drop in water level. inches Percolation rate, minutes per inch Remarks 12:07 prefill 6 15 m' 12:18 12:33 3-5/8 4.1 12.43 12:58 " of " " of 1.02 1-17 1.24 1.39 " " " if It Perc^!,:ion rate = 4 - 1 minutes per inch. ChT.1"N0627 PERCOLATION TEST DATA SHEET S -P Test;.ng, Inc. 7-6-93 12:20 a.m. Percolation test readings made by on starting at (!IED Test hole location 2135 Colin Rd. , hole number 4 Date hole was prepared 7-5-93 Depth of hole bottom 12 inches, Diameter of hole 6 inches Soil data from test hole: Depth, inches 0 - 10" 10" - 12" Soil texture Topsoil dark brown loam Brown sandy loam Method of scratching sidcwall Kn i f e Depth of gravel in bottom of hole 2 inches 7-5-93 10:30am 12 Date and hour of initial water filling , Depth of initial water filling inches above hole bottom Method used -) m, intain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon. , Maximum water depth above hole bottom during test 6 inches ime Time interval, minutes Measurement, inches Drop in water level, inches Percolation rate, minutes per inch Remarks -1 — -L n o u n o u to n 1 •26 Percolation rate — 5.0 minutes per inch. Cl✓R'P.000627 PERCOLATION TEST DATA SIii;ET Percolation test readings made by ;3—P Testing, Inc. on 7-6-93 starling at , . 12 : 18 a.m. ) sta ,m,.t tri Test hole locat;-•-L— 2135 Colin Rd. Ilole number -3 Uatc hale was prepared ared 7-5-9 3 Depth of hole bottom 12 inches. Diameter of hole 6 inches Soil data from test hole: Depth, inches Soil texture 0 — 12" Topsoil dark brown loam Method of scratching sidewall Knife 2 Depth of gravel in bottom of hole Date and hour of initial water filling 7-5-93 i �c A oa(minitial water filling 12 ine above hole bottom Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic jiphon 6 Maximum water depth above hole bottom during test __inches ': ime Time interval, minutes Measurement, inches Drop in water level, inches Percolation rate, minutes per inch Remarks 12:07 prefill 6 12:19 12:34 01 1-3/4 8.6 30 min 12:42 12:57 " 1:03 1:18 1:25 1:40 L Percolation rate = 2.6 minutes per incl. CERT.*00627 PERCOLATION TEST' DATA SKEET S -P Testing, Inc. 7-6-93 12:22 a.m. Percolation test readings made by on starting at 'fest hole location 2135 Colin Rd. Itole number 6 Date hole was prepared 7-5-93 Depth of hole bottom 12 inches. Diameter of hole— 6 inches Soil data from test hole: Depth, inches Soil texture 1 •• • •. • •�WE•. Method of scratching sidewall Knife 2 Depth of gravel in bottom of hole inches 7-5-93 1�• 30 12 Date and hour of initial water filling , epth o a1m initial water filling inches above hole bottom Method used to maintain at least 12 inches of water depth in hole for at least 4 hours Automatic siphon 6 Maximum water depth above hole bottom during test inches '.' imc Time interval, minutes Measurement. inches Drop in water level, inches Percolation rate. minutes per inch Remarks 12:07 prefill 6 12:22 12:37 113-5/8 4.1 15 min 12:38 12:53 " 3-1/4 4.6 of of 1:06 1:21 3-1/8 4.8 " of 1:28 1:43 3-1/8 4.8 " Percolation rate = 4.5 minutes per inch. CBRT. #xC0627 PERCOLATION TEST DATA SHEET a.m. Percolation test readings made by c—P 'T'Pstincg , Inc, on -7-6-9 3 starting a m. .mea Test hole location 2135 Colin Rd. Hole number 5 , Date hole was prepared 7-5-93 Depth of hole bottom 12 inches. Diameter of hole 6 inches Soil data from test hole: Depth, inches Soil texture 0 — 12" Topsoil dark brown loam Method of scratching sidcwall Knife Depth of gravel in bottom of hole 2 inches Date and hour of initial water filling 7-5-9 3 1 &IrMA litial seater fillip 12 inches above hole bottom Meth, ' 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 test 6 inches ince Time interval, minutes Measurement, inches Drop in water level. inches Percolation rate. minutes per inch Remarks 12:07 prefill 6 12:21 12:36 it4-5/8 3.2 15 min .2:39 12:54 " 4-1/2 3.3 " is 1:05 1.20 4-7/16 3.4 " 1:27 x:42 4-7/16 3.4 " Percolation rate = 3.4 minutes per inch.