The URL can be used to link to this page

Home My WebLink About1977-05-06 Septic System Design and Soil Testing545 Indi3,i P.'.�:und %Viizata, Minnesota 55391 (612) 473-4224 May 6, 1977 0 G MAY 10 197-1 Ms. Nancy Curry Roger Fazendin Realtors, Inc. VILLAGE 08 ORONO Wayzata, 11innesota 55391 Re: Tract D, R.L.S. 1275 plat 43152 parcel 4000, which is east of Brown Road and about a mile north of U.S. 12. Dear Its. Curry: Enclosed are drawings and specifications for an on -land sewage treatment s}stem for the above referenced lot. The drain - field design was based on the percolation tests and the soil boring performed on May 2 and 3, 1977. The locations of the percolation tests holes and the soil borings are shown in Figure 1. Soils encountered in the seven foot soil boring were topsoil over brown clay over brown silty clay. No ground- water was found in the soil boring hole. The percolation rate for the primary drainfield averaged 78 minutes per inch. The percolation rate in alternate drainfield area was greater than 120 minutes per inch. The suggested disposal system for this alternate drainfield area is a mound treatment system. Stated percolation rates are averaged for the locati,...s shown and no guarantee is implied or expressed that these conditions exist for the entire proposed drainfield area. Sincerely, 1 EUGEN A. HICKOK AND ASSOCIATES � l Philip Pins �L Enclosure AO�iI PJP/lkg cc: A�ck.a�-,'js� �,nwtsOn t • SPECIFICATIONS PROPOSED ON-SITE SEWAGE DISPOSAL SYSTEM TRACT D R.L.S. 1275 PLOT 43152 PARCEL 4000 ORONO, MINNESOTA SEPTIC TANK - Two 1000 -gallon capacity tanks, in series manufactured and installed in compliance with Village code. See Figure 2 for lo- cation. DOSING CHIMER - One 250 -gallon capacity tank downstream from the second septic tank manufactured and installed in compliance with Village code for septic tanks, including a pump or sip.ion with discharge rate between 25 and 45 gpm. The purpose of the dosing chamber is to deliver septic effluent to the drainfield in periodic doses of 150 to 175 gallons at rates between 25 and 45 gpm, rather thc.n in smaller more frequent applica- tions. See Figure 2 for location. DRAINFIELD Proposed total drainfield area is 1463 square feet. Proposed drainfield trench bottom width is four (4) feet requiring 366 lineal feet of drain tile. Because of surface slopes a single drair.- field system with drop boxes is proposed where drain tiles are laid flat along the contour in four runs of 92 feet (place a drop box in the middle of each run). Effluent is to carried by solid, six-inch diameter, plastic pipe directly to Cie first drop box thence to succeeding lower drop boxes with all elbows and con- necting pipes to consist of solid, six- inch diameter plastic pipe. The end of each run of perforated pipe is to be cap- ped or plugged. There shall be undisturbed earth between trenches at least as high as the elevation of the top of the rock in the uphill trench of adjacent trenches. There shall b,2 undisturbed earth under the supply line between drop boxes at least as higr as the middle of the trench pipe in the uphill trench adjacent trenches. V_ The minimum center to center distance be- tween adjacent trenches shall be 8.5 feet. The proposed drainfield location is shown in Figure 2. These delineations are to be adjusted in the field to conform to actual contours of the naturae ground. The contours shown on the figures are approximate. The drop box detail is shown in Figure 3. Trench details showing materials and in- stallation are shown in Figure 4. Esti- mated quantity of washed gravel or crushed rock for pipe bedding is 82 cubic yards. Estimated quantity of loamy sand is 61 cubic yards. Figure 1 through 4 are, by refer- ence, Trade part of these specifications. Construction of the drainfield system shall not proceed unless the, moisture content of the clay soil at 1 to 4 feet deep is lower than the plastic limit of the soil. Con- struction equipment wheels or tracks shall not be allowed to come into contact with the bottom of the excavation during construc- tion. After the trenches have been dug and before placement of the loamy sand and filter rock, the sides and the bottom of the trenches shall be scaribied with a rake. The loamy sand layer shown in the cross-sec- tion drawing on Figure 4 may be thicker than sig: inches but must be less than 12 inches. DETERMINATION OF PLASTIC LI11IT - Plastic limit is the soil moisture content above which manipulation of the soil will cause compaction and puddling. If a frag- ment of soil can be easily rolled into a wire 1/8 inch in diameter, the moisture content is above the plastic limit. If the soil is dry enou.Th to be friable and falls apart when rol,ing it into a wire, the moisture content is below the plastic limit and the soil may be manipulated. 11AINTE'JA:'CE SUGGESTIONS SEPTIC TANK - Inspect the tank annually and have the tank cleaned when the scum is 3 inches or less above theoutlet baffle and/or when the sludge level is 8 inches or less below the outlet baffle. DRAINFIELD - Annually change the plugs or caps in the drop boxes to rest half of the adsorption field. DOSING CHAt'B ER - If a dosing siphon is installed, the auxil- iary vent should be cleaned annually. If pumps are used in the dosing chamber, the manufacturers maintenance schedule that comes with the pump should be followed. O PEGOLUTWt1 TEST HOLE • SoiL DORiN& r�m� o zs _,jv 100 i1 Grainfield Layout_ E A HICKOK & ASSOCIATES Roger Fazendin Realators, Inc. HYDROLOGISTS - ENGINEERS Single Family Euellinq, Orono I MINNEAPOLIS MINNESOTA :lay 197 H l:l (7 L^ !--1 C' C: w - ilk " -3 x H — — y 'd H o 0 M O I to M 'a V: 'y*f d y LR rr r j C y b '-� O C ro ro O - C z x r x Mr xyH f•O+ K h t� r r � ty f7 y wa M =° o 0- 1-3 0 *4 a Z 00 n • rtC) pi IA H O ::r O In •X :j I; :3- a ro 0115 P• ro - - F Z, row :3 Fl - P• N D N (D I � ::rO (D 11 fo C) :C v, rt o I �_ F -w O • rt rtD r _ ^+ r. , rt rt O h . I) ( rtt. 10 = o Y O O n ro 1 , - cm I` M a o r* rt ,d � L ; rt 0 b H. m0(n1-- rn 0 7C D U D N• C) O::r _ c o c ► 3 J U) H 0 x► t :1 �r !i 0. l� — v+ r) y •� r Oro ro P1 N P) r) N t-4 Fl M� ►JO xN O J;7 A n rt r. V) rt -: cn I n Z Z N ". ('1 10 4? rt '''-- . !J ,n 4Aon - N I,. 4A 4A a t I 6" T, PERFORhTED PLASTIC PIPE—i"ID FT11 a;:!: LIEVEZ, 6" LOARY SAIR: S_.�^_IO.. :iA: ii ` T SOIL COVER UN REATZ'D BUILDING PAP= ii - =�� 3" �rAsr—D Gc.�.vr_, NATURA:4 SOIL COVER U, IREAT— oCPoe�•o�: °. :ii�'e: •i� o y'��• �a.ii C 11 '11i 6" i1YFs+ti;TEl; �� cb :,.re.o ..,ef.. .�._o PZAASTIC: PSP- --� e e •�'��in•eo� •.q•be.oer.•a.eo •• P� ¢n oeo,;.�.•eG�Ga� DU .meq •+• ,�� a «iej •�� e ro a v ��Z .•• .• ::.P• • sea L0Ma,Loe�o.o � PROFTLE Drainfield Trench Detail Roger Fazendin Realators, Inc. Single Famly Dwelling, Orono to 3" WASHED GR.,.V_:, E A HICKOK & ASSOCIATES:la 1 HYDROLOGISTS - ENGINEERS M MINNEAPOLIS INNE SOTA 4 Telephone 473.357 Village of Orono Post Office Box 660 Crystal Hay, Minnesota 55323• Municipal Offices On the North Shore of Lake Minnetonka December 16, 1977 Mr. Greg Frank McCombs -Knutson Associates 12805 Olson Memorial Highway Minneapolis, Minnesota 55441 Subject: Septic System for Fred W. Broling Tract D, R.L.S. 1275 plat 43152 parcel 4000, which is east of Brown Road and about a mile north of U.S. 12. Greg: Would you please review the septic plans and send the information back with your recommendations. Thank you. Sincerely, Thomas J. )acobs Building Inspector TJJ/sll Enclosure Tom Jacobs City of Orono P.O. Box 66 Crystal Bay, Subject: Dear Tom: rCOMBS-KNUTSON ASSOCIATES, INC. CONSULTING ENGINEERS ■ LAND SURVEYORS ■ SITE PLANNERS NOW E December 19, 1977 DEC 20 13;1 VILLAGE 06 ORvHa Minnesota 55323 Septic System Review for Fred W. Brolinq Tract D, R.L.S. 1275, Plat 43152, Parcel 4000 As per your request of December 16, 1977, we have reviewed the subject septic system application. The applicant proposes to install a standard septic system consisting of two 1000 -gallon septic tanks, a 250-qallon dosing tank, 1463 S.F. of drainfield area (366 lineal feet x 4 ft. wide trench) and four drop boxes. Percolation rates averaqed 78 mpi at the primary site and over 120 mpi at the secondary site. The lot size is approximately two acres, which is the minimum lot size for an on-site disposal system. We recommend that the application not be approved for the following reasons: 1. The percolation rate of 78 mpi is slower than the minimum allowable rate of 60 mpi for a standard system. An alternate system or site must be selected. 2. The applicant proposes a trench bed with a four ft. width which is in excess of the 3 ft. maximum stated in Orono's code. 3. The alternate site ha.3 a percolation rate slower than 120 mpi. A mound system is proposed for this site, but the code requires that the substratum for a mound system shall have a percolation rate faster than 120 mpi. Therefore, the alternate site is unacceptable and a new alternate site must be selected. If the applicant should submit a new proposal, we request information on the number of bedrooms in the proposed house, the basement elevation of the proposed house, and the contours x IneA S - 7 O'e o 12805 OLSON MEMORIAL HIGHWAY, MINNEAPOLIS, MINNESOTA 55441 TELEPHONE (612) 559-3700 22 NORTH MAIN STREET, HUTCHINSON, MINNESOTA 55350 TELEPHONE (612) 879-8029 SOUTHWEST ENGINEERING DIVISION, MARSHALL, MINNESOTA 56258 TELEPHONE (507) 532.5820 Tom Jacobs December 19, 1977 Page Two of the on-site disposal system relative to the house elevation. If you should have any questions, please advise. Very truly yours, GF:ts Enclosure ASSOCIATES, INC. Fred Broling 340 Heather Lane Long Lake, MN 55356 Mr. Broling: Telephone 473.7357 CITY of ORONO Post Office Box 66aCrystal Bay, Minnesota 55323 a Municipal Offices On the North Shore o/ Lake Minnetonka December 22, 1977 Please find enclosed the City Engineer's septic system report for your property, which recommends your application not be approved. If you have any questions, please contact us. Sincerely, Thomas J. Jacobs Building Inspector TJJ: sm Enclosure d� January 9, 1978 -776 Vrew h Rd 545 Indian Mound Wayzata. Minnesota 55391 (612)473-4224 Mr. Fred W. Broling 340 Heather Lane Long I•ake, Minnesota 55356 Re: Percolation test for Tract D, R.L.S. 1275, Plat 43152, Parcel 4000, Hennepin County, Minnesota Job Number 11-17-38 Dear Mr. Broling: Enclosed is information requested for an on -land sewage treatment system for the above referenced lot. The drain - field information was based on percolation tests and soil borings performed on January 4 and 5, 1978. The soil borings were as follows: 0 - 25" black loam, 25 - 34" yellowish brown loam, 34 - 84" olive brown loam, 91" water table. Soils are classified as Hayden Clay Loam. The average rate of percolation for the drainfield as tested was 25.1 rainutes per inch (primary site) and 17.1 minutes per inch (secondary site). The location of the soil borings, percolation test holes and specifications and layout of the drainfield are enclosed. The drainfield capacity is designed for a five bedroom house upon the above information. Stated percolation rates are averaged for the location shown and no guarantee is implied or expressed that these conditions exist for the entire proposed drainfield area. Sincerely, EUGENE A.ICKOK AND ASSOCIATES ?_ .a E. A. Hickok, P.E. EAH/cml Enclosure _21 .%t) & r �►J.� „SD 4 1 P e J4r N sro N 960 i �LoNG LIV Ar Scq�e o so ioo Fe+cr E. A. P;C; GK & t.SSOCI;:f7j HYDROLOGISTS-ENGINE ERS T _ L L,r .-; rlt, ,N MINNEAPOLIS, F.IINNESOTA -- mi Progoz-�ed septic.-�3 Ks house. \000 �1, e�� ) �y dosm �hacnbek' Pr�mary 9 (foo 9-&\.) ~- ----_ - aro? e, v- n& --t e- 4 L2.\e. a • \,= (o o" 4 �Yrp d ?` ro' \r, G. - D r"o f�D-, i�',i1. -..'.. 'MCKOK & ASSC-C;Ai cS -•- HYCF.IDLOGISTS-ENGitiEERS MiNt-EAPOLIS, MINI -;-::.OTA t Qert o\at%ovN 50\\ bor�ncr x Fri �:•ro1.�a C rcno_ M,�'�.'=.:�. �:G��J+C �.�.=�t:Cit17'E3i ^, Yu�'GO\2��''C1 ��•�C. \��\� 3.�"1d HYnROLGGtSTS-i vGil�F^rZ: IANNE::UGLIS. INNESOTA Telephone 473.7357 CITY of ORONO Post Office Box 660 Crystal Bay, Minnesota V0123 Offices On the North Shore of Lake Minnetonka January 11, 1978 Jim Olson Bonestroo, Rosene, Anderlik & Associates, Inc. 2335 Hwy 36 St. Paul, MN RE: Percolation test for Fred W. Broling 3" Heather bmw, Orono "l7 % $r-aww Mr. Olson, Enclosed is a copy of the percolation test and septic system design for the above mentioned property. Please review the information and forward any recommendations you may have. Sincerely, Thomas J. co s Building Inspector TJJ: sm Enclosure V407 0 ft. 545 Indian Mound Wayzata, Minnesota 55391 (612)473-4224 January 12, 1978 Mr. Greg Frank McCombs -Knutson Associates 12805 Olson Memorial Highway Minneapolis, Minnesota 55441 Dear Greg: Enclosed herewith please find the on-site treatment system test results for the Fred Broling property on Long Lake. This property is identified as Tract D, R.L.S. 1215, Plat 43152, Parcel 4000. If you have any questions on this please call me. Sincerely, EUGENE A. HICKOK AND ASSOCIATES Marcus C. Hannaman MCH/cml Enclosure I COMBS-KNUTSON ASSOCIATE. INC. CONSULTING ENGINEERS ■ LANO SURVEYORS ■ SITE PLANNERS Al Ol son City of Orono P.O. Box 66 Crystal Bay, January 16, 1978 Minnesota 55323 Subject: Septic System Application Dear Al: O JAN 17 iyio I. I;$ 1 I am forwarding the attached septic system application for your review. I assume that the City does not want us to review anymore applications, and I will therefore be forwarding all future applications to you. Very ,truly yours, McC?MBS-KNUTSON ASSOCIATES, INC. ,;r go Frank, P.E. GF:ts Enclosure 12805 OLSON MEMORIAL HIGHWAY, MINNEAPOLIS, MINNESOTA 55441 TELEPHONE (6121 559.3700 22 NORTH MAIN STREET, HUTCHINSON, MINNESOTA 55350 TELEPHONE (612) 879-8029 SOUTHWEST ENGINEERING DIVISION, MARSHALL, MINNESOTA 56258 TELEPHONE (507) 532-5820 r January 19, 1978 Mr. Hank Muhich Building & Zoning Director City of Orono P.O. Box 66 Crystal Bay, Minnesota 55323 Dear Mr. Muhich: 545 Indian Mound Wayzata, Minnesota 55391 (612) 473-4224 i JAPE 2u ly,u VILLAGE OF9 OBOU0 We have located on the accompanying map the percolation test holes for both the May and the December, 1977 test on the Fred Broling property. As you can see, the test holes are very close together and the difference in percolation rates recorded between Ma. December should not have occurred. As agreed with Mr. Olson of Bonestroo and Associates, we have retested the percolation rates for the December, 1978 alternate field. The test results recorded on January 18, 1978 for the alternate field were the same as those recorded in December, with an average percolation rate of 17.1 minutes/inch. The only explanation for the higher rates recorded during May, 1977 at 78 minutes/inch is that the percolation test holes did not penetrate the B Horizon of the Hayden soil. I hope that this clarifies the matter and expedites the Fred Broling request for a building permit. Sincerely, EUGENE A. HICKOK AND ASSOCIATES Marcus C. Hannaman Soils Scientist MCH/cml Enclosure cc: F. Broling J. Olson B. -6 -a I.-0 aR•A&V.y, 40&aA S AMCAdO4 Inc. ems., C rmt AIP& Ono G I.E. Lamprene F. Ftldslra. I.E 11o111W. Ronne. LE. Glm R. Cook. I.E. AL A�a& a?'fs lorrlk C Agdrrllk. I.E. Kfith A. Gordon. P.E. ``A Bradford A. Lemberg. L E Thomas E. Noyes. I.E. TWO Robert D. Frlgaard, I.E. Richard W. Fojler. I.E. Richard E. Tuner, I.E- lawn C. Olson. I.E. January 23, 1978 Mr. Thomas J. Jacobs Building Inspector City of Orono P.O. Box 66 Crystal Bay, Mn. 55323 Re: Fred W. Broling, 340 Heather Lane Percolation Tests Our File No. 13J9 Dear Mr. Jacobs: 1PR3 @ R 0 W R 0 JAN, 26 I.C, M VILI..Af� r'r . r*jr jr Robin G. Sdrnkbl. I.E Ma"fn L. Somal&, I.E. Donald C. Aarprdl. LE. Kenneth R. Urines. LE Charles A. Erlckl.,, Leo N. An"IAt Harlan M. Orton We have reviewed the info•=mation regarding percolation tests and septic tank - drain field design submitted by your office and by Hickok and Associates. Following is a summary of events leading up to the present time: 1) Percolation tests taken May 2 and 3, 1977 2) Letter dated May 6, 1977 sent to Ms. Nancy Curry (Fazendln Realtors) from Hickok with results and recommendations. 3) Letter dated December 19, 1977 sent to City from McCombs recommending denial of permit because of bad percolation test results. 4) New percolation tests taken January 4 and 5, 1978 5) Letter dated January 9, 1978 sent to Fred W. Broling from Hickok with new design of system - Percolation rate - 25.1 mpi (primary) and 17.1 mpi (secondary) 6) Letter dated January 11, 1978 sent to Engineer from Building Inspector requesting review 7) Letter dated January 19, 1978 sent to City from Hickok confirming percolation results of January 4 and 5, 1978 Pursuant to your request for review of the design, we checked with Mark Hannaman of Hickok as to why there was such a difference between the May 1977 tests and the January 1978 tests. His first responses was that the tests were taken in different locations on the lot. However, after checking in the field, the two sets of tests were indeed located fairly close together. Wc, therefore, requested that the tests be re -run. It was intended that a representative of the City to present during the re -testing. Apparently, because of schedule conflicts, no one from the City was present during the re -testing. Mr. Hannaman certifies in his January 19, 1978 letter to the City that the re -testing confirms the second set of data. Based on the percolation rates resulting from the January 4-5 test and confirmed by the January 18 re -test, we recommend approval of the septic tank -drain field design submitted by Hickok. A summary of the Hickok design criteria is presented herewith: Page 1. City of Orono Crystal Bay, Mn. 55323 Re: File No. 139 January 23, 1978 Two - 1000 gallon septic tanks in series One - 250 gallon dosing tank Percolation rate - 25.2 mpi primary and 17.1 mpi secondary Drainfield area 1500 sq.ft. (1500) Trench Bottom 3 ft. (3 ft.) Length of Drainfield 500 ft. (500) Number of laterals 5 (5) each 100 ft. long (100) Minimum spacing of laterals 7� feet (7h) The contGur map accompanying the design indicates up to 12% slope. Therefore, drop box structures will be required and extreme care will be necessary to layout the lateral lines parallel with the slope. The drainfield must be located in order to miss an existing foundation shown on the site plan. We suggest careful inspection of this facility during installation because of the maximum 12% slope involved. If we may be of further assistance in this matter, please contact us at your con- venience. Yours very truly, VNESTA00, ROSE)M, ERLIK 6 ASSOCIATES, INC. James C. Olson IJCO: 1 i Page 2. C