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Home My WebLink AboutSeptic System Approval - Approved - . O en,51'1 CITY OF ORONO r' SEPTIC SYSTEM APPROVAL 0,„ 0,4.,,,rr ''.‘ z4 '',, � � . '. t `�` �` CITY of ORONO i'l, ��.> Municipal Offices r '� Post Office Box 66 L� `� 4�G Crystal Bay,Minnesota 55323-0066 kEggO LOCATION: 430 Old Long Lake Rd. OWNER: Wayzata Country Club - Comfort Station GENERAL CONTRACTOR: SEPTIC CONTRACTOR: SITE EVALUATOR: Ellestad Land Services REPORT DATE: October 10, 1997 The City of Orono has Approved your on-site system design as of February 19, 1997 (approved-disapproved) (date) with the following comments: The drainfield site is located very near a golf cart path and the drainfield site must be protected before, during and after the construction of system. Additional soil testing will be required before the future drainfield site can be used as an insufficient number wereperformed initially. THIS IS NOT A PERMIT. This is a design approval form which must accompany the site plan. A permit must be issued to a licensed septic contractor prior to installation. A list of currently licensed septic contractors is enclosed. NOTICE TO INSTALLERS: Any changes to the approved plans and specs must have prior approval of the Inspector (473-7357). Call for inspections 24 hours in advance. ALL DRAINFIELD AREAS MUST BE FENCED OFF prior to building site excavation and fencing must remain in place until final site grading. Approval to pour footings will not be granted until the Inspections Department has verified that primary and alternate sites are adequately protected. NO VEHICULAR TRAFFIC OF ANY KIND (cars, trucks, earth moving equipment, etc.) is allowed within 20' of tested drainfield sites either before or after system construction. Compaction of these areas could render them unusable prohibiting the timely completion and or limiting the long term use of the property. A site copy will be available at the City Offices for the septic contractor. CITY OF l 'O 0 / , By /, ./ iii/ Stephen -ckman, On-site ystems Manager TELEPHONE-473-7357•FAX-473-0510 1 Ntsti 200 CentralAvenue 1 b Buffalo, 919 55313 3 :Ilestad Phone 012-682-9329 • 5ax612-682 9002 �r etre .s and It Yr ` •,ervIces October 10, 1997 Robert Distel Wayzata Country Club-Grounds Dept. 430 Old Long Lake Road Wayzata, MN 55391 General Notes for Septic System Site Plan Comfort Station,Wayzata Country Club(Site A) Per our conversation it is my understanding that you would like to update the on-site septic treatment for the snack bar/comfort station located east of the maintenance building. Although the MPCA manual does not list estimated water use for this specific type of facility,the closest comparison I found was a cafeteria which estimates 2 gallons/day per customer and 11 gallons/day per employee. You had estimated approximately 250 golfers during your peak periods. Although it is unlikely that every golfer will use this facility,this site plan is designed to accommodate 250 customers and 2 employees with an estimated 522 gallons per day effluent discharge. The attached soil borings show a sandy loam soil profile with no red and gray mottles present to a depth of 6.0 feet. The percolation rates for this site average 11 minutes per inch. This site will require 154 lineal feet of trenches with 18 inches of rock beneath the pipe not to exceed a total depth of 36 inches from original grade. This equals 463 square feet of trench bottom treatment area as required by state code. Effluent will gravity flow from the lowest floor elevation through the septic tanks to the pump tank via a 4 inch PVC line. The pump tank will then lift the effluent to the first(highest)drop box via a 2 inch PVC line in doses of 75 to 140 gallons per cycle(no more than 4 cycles per 24 hours). As this system is located adjacent to a cart path, measures(such as plantings or fencing)should be implemented to discourage golf carts driving over this area.It is imperative that no compaction is allowed on the septic site before, during or after the construction. To insure this I highly recommend a barrier fence around the septic site during the construction. Please refer to the enclosed site plan and design sheets for additional details. Please advise if you have any questions or concerns in regards to this site plan. Since ely eaVe---- Ton' lestad MPCA Cert.#1410 DRP Lic.#282 Ellestad Land Services • q I-6 Laundromat Each machine 580 690 or Each load 50 50 or Square foot 2.2 2.9 Barber shops Chair 55 80 Beauty shops Station 270 300 Car washes Inside square foot 5 * 10 * (* does not include car wash water) Eating and Drinking Establishments Restaurant Meal 2.5 4.0 (does not include bar or lounge) or Each seat plus 24 40 add for each employee 11 13 Dining hall Meal 2.5 4.0 Coffee shop Each customer 2.0 2.5 add for each employee 11 13 Cafeteria Each customer plus 2 2.5 '174,n - See) add for each employee 11 13 .t Z ZZ Drive-in S22 al.� Car stall °g1) - ZJ .45 9 Bar or lounge Kid} - Each customer plus ►5 add for each employ (l a f5�i�� l6 or Seat FPYI. 13 � C E0 7 • Soil Boring Log - I I es ad tsi Job No. 97377 Date 10-01-97 an ervices Client Name Wayzata Country Club Borings made by Bob Benedict 200 Central Avenue Classification System: USDA—SCS Buffalo, MN 55575 Auger type: Hand— Bucket Phone 682-9329 Fox 682-9002 DepthBoring No. 3 Depth Boring No. 4 inin feetMunsell Chart 10YR feet Munsell Chart 10YR Sandy Loam 4/2 Sandy Loam 4/2 1 1 1 Sand 5/2 2 — 2 - 3 — 3 6/2 42" 5/2 4 — I 4 — 5 — I 5 — 6 I 6 1 end of Boring end of Boring End of boring at 6 feet End of boring at 6 feet n Standing water table at feet of — Standing water table at feet of depth hours after boring depth hours after boring ® Not present in boring hole ® Not present in boring hole ❑ Mottled soil at feet of depth n Mottled soil at feet of depth ® Mottled soil not present ® Mottled soil not present Notes: Soi7 Boring1_ Og - I I es a d tsd Job No. 97377 Date 10-01-97 a n ervices Client Name Wayzata Country Club Borings made by Bob Benedict 200 Centra/ Avenue Classification System: USDA—SCS Buffo/o, MN 55373 Auger type: Hand— Bucket Phone 682-9329 Fox 682-9002 Depth Boring No. 1 Depth Boring No. 2 in in feet Munsell Chart 10YR feet Munsell Chart 10YR Sandy Loam 4/2 Sandy Loam 4/2 1 1 2 5/2 2 I 5/2 3 — 3 4 4 5 — 5 - 6 6 end of Boring end of Boring End of boring at 6 feet End of boring at 6 feet Standing water table at feet of Li Standing water table at feet of depth hours after boring depth hours after boring ® Not present in boring hole ® Not present in boring hole I I Mottled soil at feet of depth fl Mottled soil at feet of depth ® Mottled soil not present ® Mottled soil not present Notes: PERCOLATION TEST SHEET Test hole location 97377 Hole No. 1 Date test hole was prepared: 10-01-97 Depth of hole bottom: 24 inches Diameter of holes 6 inches Soil data from test holes: depth, inches soil textures soil colors See Soil Borings Method of scratching sidewall: nails in lathe Depth of pea size gravel in bottom of hole: 2 inches Date and hour of initial water filling:10/1 11:49am Depth of initial water filling: 12" above hole bottom Method used to maintain 12" of water depth in hole for 4 hours: Sand Test Percolation test done by: Bob Benedict Percolation test started at 11:49 am Maximum water depth above hole bottom during test: 8 inches WATER WATER PERC RATE TIME INTERVAL WATER DROP DROP CALCULATION conversions (MINUTES) DEPTH (fraction) (decimal) 11:49 START - 8 10 — .63 = 15.9 1/16 = .05 11:59 10 7 38__ __ 5/8 __ - .63 _ TIME DROP PERC A - - --- - (Decimal) 1/8 = .13 12:00 REFILL 8 10 ± .63 = 15.9 12:10 10 - _ 7 38__ __ 5/8 _ - .63 TIME DROP PERC B 3/16 - .19 - -- - (Decimal) 1/4 = .25 12:11 REFILL 8 10 ± .63 = 15.9 12:21 10 - _ 7 .3/8-_ 5/8--- - .63 - TIME DROP PERC C 5/16 - .31 - --- --- (Decimal) 3/8 = .38 REFILL _ _ - = 7/16 = .44 TIME DROP PERC D - - - - - - - - (Decimal) 1/2 = .5 REFILL _ - _L. = 9/16 = .58 TIME DROP PERC E - - - - - - - - (Decimal) 5/8 = .63 REFILL _ _ — = 11/16 = .69 TIME DROP PERC F - - - - - - - (Decimal) 3/4 = .75 REFILL _ _ —• = 13/16 = .81 TIME DROP PERC G - - - - - - - - (Decimal) 7/8 = .88 REFILL _ - — = 15/16 = .94 TIME DROP PERC H - - - - - - - - (Decimal) A, B, C B, C, D Largest No. of ABC Smallest No. of ABC Largest No. of BCD Smallest No. of BCD x 0.10 = x 0.10 = Largest No. of ABC Largest No. of BCD C, D, E D, E, F Largest No. of CDE Smallest No. of CDE Largest No. of DEF Smallest No. of DEF x 0.10 = x 0.10 = Largest No. of CDE Largest No. of DEF E, F, G F, G, H Largest No. of EFG Smallest No. of EFG Largest No. of FGH Smallest No. of FGH x 0.10 = x 0.10 = Largest No. of EFG Largest No. of FGH • If the top number in each set of boxes is larger than the bottom number then take another reading. If the top number is equal or smaller than the bottom number, average the three numbers for the perc rate. PERCOLATION TEST SHEET Test hole location 97377 Hole No. 2 Date test hole was prepared: 10-01-97 Depth of hole bottom: 30 inches Diameter of holes 6 inches Soil data from test holes: depth, inches soil textures soil colors See Soil Borings Method of scratching sidewall: nails in lathe Depth of pea size gravel in bottom of hole: 2 inches Date and hour of initial water filling:10/1 11:49am Depth of initial water filling: 12" above hole bottom Method used to maintain 12" of water depth in hole for 4 hours: Sand Test Percolation test done by: Bob Benedict Percolation test started at 11:51 am Maximum water depth above hole bottom during test: 8 inches WATER WATER PERC RATE TIME INTERVAL WATER DROP DROP CALCULATION conversions (MINUTES) DEPTH (fraction) (decimal) 11:51 START 8 10 ± 1.5 = 6.7 TIME DROP PERC A 1/16 = .05 12:01 - 10 _ _ 6 1/2__ __1 1/2__ _ 1.5 _ (Decimal) 1/8 = .13 12:02 REFILL 8 10 ± 1.5 = 6.7 12:12 10 _ _ 8 1/2__ __1 /2__ _ 1.5 - TIME DROP PERC B 3/18 = .19 - -- - (Decimal) 1/4 = .25 12:13 REFILL 8 10 ± 1.5 = 6.7 5/16 = .31 12:23 10 _ 6 ./2-_ _1 1/2-_ - 1.5 - TIME DROP PERC C - - -- - (Decimal) 3/8 = .38 REFILL - - — = 7/16 = .44 TIME DROP PERC D - - - - - - - - (Decimal) 1/2 = .5 REFILL - - . = 9/16 = .56 TIME DROP PERC E - - - - - - - - (Decimal) 5/8 = .63 REFILL _ _ . = 11/16 = .69 TIME DROP PERC F - - - - - - - - (Decimal) 3/4 = .75 REFILL _ _ _1_ = 13/16 = .81 TIME DROP PERC G - - - - - - - - (Decimal) 7/8 = .88 REFILL - - — = 15/16 = .94 TIME DROP PERC H - - - - - - - (Decimal) A, B, C B, C, D Largest No. of ABC Smallest No. of ABC Largest No. of BCD Smallest No. of BCD x 0.10 = x 0.10 = Largest No. of ABC Largest No. of BCD C, D, E D, E, F Largest No. of CDE Smallest No. of CDE Largest No. of DEF Smallest No. of DEF x 0.10 = x 0.10 = Largest No. of CDE Largest No. of DEF E, F, G F, G, H Largest No. of EFG Smallest No. of EFG Largest No. of FGH Smallest No. of FGH x 0.10 = x 0.10 = Largest No. of EFG Largest No. of FGH • If the top number in each set of boxes is larger than the bottom number then take another reading. If the top number is equal or smaller than the bottom number, average the three numbers for the perc rate. PERCOLATION TEST SHEET Test hole location 97377 Hole No. 3 Date test hole was prepared: 10-01-97 Depth of hole bottom: 18 inches Diameter of holes 6 inches Soil data from test holes: depth, inches soil textures soil colors See Soil Borings Method of scratching sidewall: nails in lathe Depth of pea size gravel in bottom of hole: 2 inches Date and hour of initial water filling:10/1 11:49am Depth of initial water filling: 12" above hole bottom Method used to maintain 12" of water depth in hole for 4 hours: Sand Test Percolation test done by: Bob Benedict Percolation test started at 11:53 am Maximum water depth above hole bottom during test: 8 inches WATER WATER PERC RATE TIME INTERVAL WATER DROP DROP CALCULATION conversions (MINUTES) DEPTH (fraction) (decimal) 11:53 START _ 8 10 — 1.13 = 8.9 1/16 = .05 12:03 10 /8__ __1 /8__ _ 1.13 TIME DROP PERC A __6 (Decimal) 1/8 = .13 12:04 REFILL8 10 ± 1.13 = 8.9 - 3/18 = .19 12:14 10 8 f 8__ _J. /8__ _ 1.13 - TIME DROP PERC B __ - (Decimal) 1/4 = .25 12:15 REFILL8 10 ± 1.13 = 8.9 - 5/18 = .31 12:25 10 8 Z/8__ _J. y8__ _ 1.13 - TIME DROP PERC C ___ _ (Decimal) 3/8 = .38 REFILL ± = 7/18 = .44 - - TIME DROP PERC D - - - - - - - - (Decimal) 1/2 = .5 REFILL 9 16 = .56 - TIME DROP PERC E - - - - - - - - (Decimal) 5/8 = .63 REFILL _ — = 11/16 = .69 TIME DROP PERC F - - - - - - - - (Decimal) 3/4 = .75 REFILL — = 13/18 = .81 - TIME DROP PERC G - - - - - - - - (Decimal) 7/8 = .88 REFILL _ TIME DROP PERC H 15/16 = .94 - - - - - - - - (Decimal) A, B, C B, C, D Largest No. of ABC Smallest No. of ABC Largest No. of BCD Smallest No. of BCD x 0.10 = x 0.10 = Largest No. of ABC Largest No. of BCD C, D, E D, E, F Largest No. of CDS Smallest No. of CDE Largest No. of DEF Smallest No. of DEF x 0.10 = x 0.10 = Largest No. of CDE Largest No. of DEF E, F, G F, G, H Largest No. of EFG Smallest No. of EFG Largest No. of FGH Smallest No. of FGH x 0.10 = x 0.10 = Largest No. of EFG Largest No. of FGH • If the top number in each set of boxes is larger than the bottom number then take another reading. If the top number is equal or smaller than the bottom number, average the three numbers for the perc rate. 1 • 'INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET FLOW Estimated Sewage Flow is Cagan pa Day(;pd) A. Estimated 5 Z2 measured x 1.5.s ad Nur 'i,- 1 'type n 'type m Type tv SEPTIC TANK VOLUME2 B. 2 e IpIY) gallons 3 4450 3300 21$4 600 373 256 Le SOILS(Site evaluation data) 5 750 s2�s am � 332 ' C. Depth to restricting layer in feet 71� 6033 4011 D. Maximum depth o!system C-3 ft is 3 feet E. Percolation rate /7 MI'I 14 F. SSF I.Z7 sq ft/gpd Number ��.oe�r ppe��ears, Bedro°ms =. .. fp=i TRENCH BOTTOM AREA H. For trenches with 6 inches of rock below the pipe: 2 or less 750 1,123 A x F• x = sq ft of bottom area 3 or 4 1,000 1.500 I. For trenches with 12 inches of rock below the pipe: 5 or 6 1,500 2.250 AxFx0.8is x x0.8= sq ft of bottom area ova9 See C-6 (i 15) J. For trenches with 18 inches of rock below the pipe: A x F x 0.6638 552 x 1,17 x 0.66=s sq ft of bottom area sail u•e.O.rf,ess.R•.a•+Amstar SoarSeamen( K. For trenches with 24 inches of rock below the pipe: v i,.c•p7iir so0 Te ctu a;y,,r"., AxFx0.61s x x0.6 sq h of bottom area "°•"cew.�' BED BOTTOM AREA Faster than 0.1° Coarse Sand — 120 L. For seepage bed0.1 toS Sand 0.83 s with 6 or 12 inches of rock below the pipe; 0.1 to s Fin.Sand" 147 0.60 iS x A x F••1.5 x x = sq h of bottom area 16 o1330 Sandy 127 0 0 44to60 ulavtL' m 2.20 2.00 o s ROCK VOLUME IN CUFF Slower than 60r" czary — (024) M. Rock depth below distribution pipe plus 0.5 foot times bottom area: • „� • M=Rock depth+6 inches x Area(H,I,j,L,K) nieble oft S 'c ;ro «a' '�'S•iwidsetiinpAadendedtage Vika.(_. +0S ft)x• ._/Up cu ft be swnra.b*,pon.+•�+•,•aa. ROCK VOLUME IN CU YDS N. Volume in cu ft divided by 27 M+27=c:uyds&+27= cuyds ROCK WEIGHT O. Cubic yards times 1.4=tons N x 1.4=tons 3NL3,x 1.4:all_tons .. ' DISTRIBUTION r'i .. '11t. •4d:" _''ed is (Check one based on slope) jjC' ) - Bed(lessthan6 roslope) ...r.... :.`.k.`1...,mi%iW::4-:".:44.h aAlKr'P�: Trenches _Drop boxes(any slope) Distribution box(level to slightly sloping) TRENCH LENGTH 'i`; `A 0 ' ; 2 inch Cove: P. Select trench width: 3 ft 4 fti `_ t. '• •�, ;. Q. Divide bottom area by trench width: (H,I,J,or K)+P a " OVA%%t': t.f. 4 r• i• 4Incb Pipe lineal feet ',-i3s`� .� ~.'+. .=f�,lineal feet 4. f ��fY's�� LAWN AREA 1 R. Select trench spacing,center to center= feet 1i" r • 4. 4 il is S. Multiply trench spacing by lineal feet R x Q s sq ft of lawn area .'i4 ti_Zs % , 624 ininch x sq ft f• f �;• •tatil_,. e It iti Roclk Below the Pipzire h LAYOUT(Use other side) ~`�`�`�` `•` ti.ti.ti ti. Am. i, '� 1.Select an appropriate scale;one square., feet. 2.Show pertinent property boundaries,tight-of-way,easements. 3.Show location of house,garage,driveway,and all other . improvements, existing or proposed •�-•l 4'• 4.Show location and layout of sewage treatment system. S.Show location of water supply well. • • Figure D-26 6.Dimension all set backs and separation distances. _ Lengr�l I Lcl oil I _ to y rivtf 4...1 L Luk&I- ,(/ or e�eit�utiovt throUE�IUcn 9 yy soy hiL �ankS 1-6 pump -1-bnk • pump lank Lo I, I ell �iuer,f (hiliV.S0 •I Lowest Floor IVA j • . ,- MANHOLES-7\H X11: NII y _x__r___—Tazr------z--------------iqgzwr•P---n.. •II.Z....4 iM.' :: 't i .:7---.4.-- - :! . ......--\ /..,— =ilma .a....-- IM liZO \L.— DROP BOXES T. /rllons = .allon� =7. ,_ • AND TRENCHES �� p�, f PUMP TANK _ / /000 go//ans G9/d#G L— SEPTIC TANK . .I PUMP LOCATED IN PUMP TANK rm lank o1k . . . REDWOOD, CEDAR OR TREATED WATER TIGHT AND LOCKABLE ELECTRIC BOX — f-- / POST (4 x 4 MINIMUM) - • PLUGS OR ELECTRIC CONNECTIONS ` • 1�-- AU. ELECTRIC MADE INSIDE THE BOX —\ CONNECTIONS I 2" SCHEDULE 80 PVC CONDUIT � ` .� / LOOP OF POWER CORD MANHOLE COVER CHAINED AND LOCKED --7g SPACE FOR SETTLEMENT �. SEALED MANHOLE RINGS y, FINAL GRADE ,,, .v tc�i ° n-i \� f .1.- / AT LEAST 12 INCHES RESERVE CAPACITY 100% OF \ h.. BELOW GRADE DAILY FLOW. : UNION WIRE FROM SUPPLY SOURCE . ' A1.6,-- ., PIPE IS LAID ON A UNIFORM SLOPEEN QM III. PUMP STATION UP TO SOIL • TANK COVER AREA FOR PROPER DRAINBACK. SEALEDAT TANK MUST BE LOWER THAN ' ,�- mlniaw�! of SZZ c+lbns �Ser�� ; IF PIPE OR HAIN UNION TO GET ELEVATIONFOR DRAINBACK, INBACK, I PLASTIC ROPE —\ A 1/4 INCH WEEP I WITH ANCHOR L _ — WEEP HOLE I A�CTRICAOLACIRCUITEPERATE-1 I I. —. — NOTES: ELECTRICAL WIRE. FROM POWER SUPPLY 7G-1—Lib Tyi •FALIinS per dose- 3 C d MUST NOT RUN OVER ANY TANKS BUT il MUST BE LAID BESIDE OTHER TANKS m�xl�u� 3 Joscs_iogi".E2�rs _ _ AND MUST BE PLACED IN CONDUIT H�QEE ALONG POST. • TROL FLOAT—/ ' t N-N x' • ELECTRICAL CORDS FROM UMP AND PUMP CON FLOATS MUST BE RUN THROUGH • CONDUIT. WIRES CANNOT HAVE GROUND CONTACT. • 1. . PUMP SELECTION PROCEDURE A. Determine'pump capacity: ' Gravity Distribution END PERFORATION OF A PERFORATED LATERAL 1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of Wase corer i . a water use rate. ' Topeoa 'i9 i. 2. Maximum suggested for delivery to a drop box of a home system is 2,700 : � .'• ••r•..;;;i'.1, ;t!'rw..,;,. • '►1,' y,.. •of IieoNxtlle Fabrk far torr- gallons per hour(45 gpm)to prevent build-up of pressure in drop box. :Loofa/Sand Layer o,;err I,a»car<..a ^1e.i1rZ•iitltTLt�tll•I Perta'•tlon trilled tforlronlolly Pressure Distribution • / • kilo •p Hear Top 3. a. Select number of perforated laterals k • Al Least 12•Io Edge �e PI of Rock Layero I Rac��,.b. Select perforation spacing= {: ::`' : : " er..1111601,•.,.„. ft. .•,9-.�"��' • Perforations Located of °'k� c. Subtract 2 ft.from the rock layer length. k.. Clean Sand Layer Bottom d Lateral Rock layejlenstlI-2 ft. ft. Orlglnal Soll Properly scarified Before Plackq Sand toyer d. Determine the number of spaces between perforations. Length perf.spacing= ft.+ ft.= spaces TABLE OF PERFORATION DISCHARGES IN GPM e. spaces+1= perforations/lateral . f. Multiply perforations per lateral by number of laterals to Head Perforation diameter(Inches) get total number of perforations. 'ix, tie >n r. x „n,.i= perforations. 1.Oa 0.56 0.74 1.5 0.69 0.90 g. t x Rizigpm. 2.0b 0.80 1.04 23 0.89 1.17 SELECTED PUMP CAPACITY . 3.0 0.98 1.28 gpm 4.0 1.13 1.47 5.0 1.26 1.65 B.Determine head requirements: aUse 1.0 foot of head for residential systems. 1. Elevation difference between pump and point of discharge. bUse 2.0 feet of head for other establishments I feet 2. If pumping to a pressure distribution system,add five feet for pressure required at manifold feet 3. Friction lossPipe Length t • a. Enter friction loss table with gpm and pipe diameter. Point of Discharge Read friction loss in feet per 100 feet from table. 0.......„----------- F.L.= 1.65 ft./100 ft of pipe Elevation Difference b. Determine total pipe length from pump to discharge • Pump :point. Add 25 percent to pipe length for fitting . loss,or use a fitting loss chart. Equivalent pipe F-18b length-1.25 times pipe length= 1.5 inch 2.0 inch 3.0 inch 233 x 1.25= Zq I feetgpm Make tae per 100 ft of pipe c. Calculate total friction loss by multiplying 10 0.69 0.20 friction loss in ft/100 ft by equivalent pipe length. 12 0.96 0.28 Total friction loss= Zq i x 1.5'S +100= it feet 14 1.28 0.38 63 0.48 4. Total head required is the sum of elevation difference, 16 2 03 0.60 special head requirements,and total friction loss. 20 2.47 0.73 0.11 G 25 3.73 0.16 13 + + H.5 30 5.23 1 0.23 35 7.90 2.06 0.30 (1) (2) (3c) 40 11.07 2.64 0.39 L 45 14.73 3.28 0.48 TOTAL HEAD 11.,J feet 50 3.99 0.58 55 4.76 0.70 60 5.60 0.82 C. Pump selection 1. A pump must be selected to deliver at least 3O gpm (Step A) with at least 11.S feet of total head (Step B). 1 1. ALL PIPES OTHER THAN PRESSURE PIPE SHOULD BE AT LEAST 4 INCH DIAMETER. 2. ELEVATION OF INLET AND SUPPLY UNE TO . • OUTLET TO TRENCH • NEXT DROP BOX MAY BE ADJUSTED UP r OR DOWN FOR DESIRED EFFLUENT LEVEL IN TRENCH. ..:• INM - :; SUPPLY UNE TO NEXT DROP BOX 3. SUGGESTED TRENCH UQUID LEVEL IS AT TOP 1 • OF TRENCH ROCK IF PERMEABLE SYNTHETIC I S - -- FABRIC COVERS ROCK, AT TOP OF OUTLET PIPE IF HAY OR STRAW COVERS ROCK. .' • 4. INVERT OF PIPE FROM PUMP MUST BE AT LEAST ONE INCH HIGHER THAN INVERT OF OUTLET TO TRENCH SUPPLY PIPE TO NEXT DROP BOX. _MI 5. TRENCHES MAY OUTLET ONE SIDE OR BOTH . ... _ I SIDES OF DROP BOX. 11=1 I. SUPPLY LINE I I r` Q4-_ I SUPPLY UNE 1 II I _ 4---1-) j L I -� _ I 11� -I--I t I I N II if _}, rte_ I I _ �_ I CT..., 311111 _r j Lam1 -1111 I _I ___1 i:L�— OUTLETS TO TRENCH �___�_r__- I IL ----r r- L . OUTLET TO • __ 1 1/2 INCH OR 2 INCH x TRENCH PLASTIC PIPE FROM PUMP I j u � A56e i>�nifI of Is�- hqes )t( ImicL oni DROP BX FOR PUMPED EFFLUENT 1. ALL PIPES SHOULD BE AT LEAST 4 INCH ' I DIAMETER. 2. ELEVATION OF INLET AND SUPPLE VEP TO OUTLET TO TRENCH NEXT DROP BOX MAY BE ADJU INLET ORROM SEPTICV0 OR DOWN FOR DESIRED EFFLUENT LEVEL . TANK PREVIOUS IN TRENCH. DROP BOX •---1 ' ' SUPPLY UNE TO NEXT DROP BOX 3• SUGGESTED TRENCH UQUID LEVEL- IS AT TOP - _ • OF TRENCH ROCK IF PERMEABLE SYNTHETIC • - - 1E — FABRIC COVERS ROCK, AT TOP OF OU 1_ TLET ' PIPE IF HAY OR STRAW COVERS ROCK. Mir :. • '' 4. INVERT OF INLET MUST BE AOT LEAST ONE PIPEE 1.�,•.� • INCH HIGHER THAN I IliOUTLET TO TRENCH TO NEXT DROP BOX. 1 5. TRENCHES MAY OUTLET ONE SIDE OR BOTH SIDES OF DROP BOX. 1 11=1 1 INLET 11=1 i SUPPLY UNE ;"N�..� _�� 1 SUPPLY UNE _ �� _ �� 11 1 tt .� ' II: r, '• — �ti_ 1 it _} �-«- - j' Z i 1- 1 I ' 1 1 1 , - 1 �� /El _1 1 L.7— . 02.. 1 I 1 =1 1----------� L- ouTLET TO • -' �—OUTLETS TO TRENCH = TRENCH •q 1� .tee use. ate�nntn of eta l'rendAts e� e t' \s\. �, 1,esk �renek � J DROP BOX 1 Trench rock covered-.,with permeable, • • Earth backfill synthetic fabric above top of rock Pipe to next 4" diameter inspection drop box . a well with cap .• / Alt, Ali, alt, all, / alt,r= All, _ xi MINIIMIF =MN (;) lir ; • Niqinoit ter= u = — — t> �8" M111.11.1.011.11.11111 .10....V lnle �OG•5-� 4" Distribution -• •e , --o_- _ __ -.: _ -_=:- o rrock h3/4"c(to 2 1/2" . l0 � E�e,i s skoon Is+ Drop box dia. See note 5. finctl ordc. 3@ Length •= S/3 feet ,gg hl/f/ gi i4/ _ • Notes: 0 erfill." 1. Bottom of trench must be level. top of trench 4yto 6 4" diameter inspection rock must be level. � well with cap 2. Slope on distribution pipe is between level and 4• inches per 100 feet recommended „ slope is level. '��=-u bakfillerforated lastic. stribution ppcnep P 1I!_1h501'-, pistolled with oPi row ust halt' along l bearing ==-----o== - - " Depth of rock pipe bottof at least 1000 Ib�ft. �1;_ �ti+. aboveppipe • strength " o _ ' :: o:: -8 Rock below pipe 4. Scarcify trench bottom and sidewalls as high as rock will be placed in the. trench • 0_:-_ see note in order •to exposed natural soil. Remove , _ _< . „ „_, loose soil before placing rock. u—u—u—n—u—iririrn=- ' 5. Where trees are present 'xbf likely to be I • present during the life of the system, 36" 112 inches of rock must b_a place under • the distribution pipe. ' Trench Construction Details