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Home My WebLink About1975-10-28 Septic System Design Reportt Ye'll- C�u NW, -, - , , October 28, 1975 Mr. Carl L. Kevlin Crest Investment Corporation Suite 118 1500 L•'. 79th Street Bloomington, Minnesota 55420 545 Indian Mound Wayzata, Minnesota 55391 (612)473-4224 Re: On Land Disposal Systems For Mr. Vince Bernhardt's Property at Lot 4, Block 1, Riedel Company's Stubbs Bay Addition Dear Mr. Kevlin: Enclosed are specifications and drawings for a proposed disposal system for the above referenced project. On October 13 and 14, 1975 percolation tests were conducted on the above mentioned property at the loca- tions described en Figure 1 of the enclosed drawings. Testing consisted of a soil boring to a depth of three and a half feet and six percolation test holes. Soils encountered were light brown sandy clay and some reddish brown and grey clay interbedded. The soil boring was made at an elevation about five feet lower than the area where the percolation tests were run. No ,round water was encountered in the soil boring hole, therefore, the ground water table is greater than 8 feet deep in the percolation test area. Percolation rates for the test holes averaged 4 minutes per inch. These rates indicate a natural soil suitable for use as a d):ain field for on site disposal. Stated percolation rates are averaged for the locations shown and no guarantee is implied or expressed that these conditions exist for the entire proposed drain field area. Mr. Carl L. Kevlin Page Two October 28, 1975 If we can be of further assistance please call. —..,.-erely, :';,'GENE A. HICKOK AND ASSOCIATES Philip J. Pins PJP/cml Enclosures cc: V. Bernhardt W. McCombs VH. Muhich SPECIFICATIONS PROPOSED ON -SITE DISPOSAL SYSTEM VINCE BERNHARDT 2022 LAKE ROAD, WAYZATA SEPTIC TANK - Two 1000-gallon capacity tanks, in series, manufactured and installed in compliance with City code. See Figure 2 for location. DOSING CHAMBER - One 500-gallon capacity tank downstream from the second septic tank manufactured and installed in compliance with City coo a for septic tanks, including a siphon or pump with discharge rate of no less than 25 gpm. The purpose of the dosing chamber is to de- liver septic effluent to the drainfield in periodic doses of 450 to 500 gallons at rates of 25 gpm or more rather than in smaller, more frequent applications. See Figure 2 for location. DRAINFIELD - Indicated average percolation rate is 4 minutes per inch. State code required mini- mum 115 square feet of drainfield area for each bedroom at this percolation rate. Proposed total drainfield area is 1000 square feet. Proposed drainfield trench bottom width is three (3) feet requiring 333 lineal feet of drain tile. Four lines 85 feet long and 8 feet apart are recommended. Proposed drainfield locations are shown in Figure 2. Contours shown in Figures 1 and 2 are approximate. Drainfield trench details showing materials and installation are shown in Figure 3. Estimated quality of washed gravel or crushed rock for pipe bedding is 75 cubic yards. Figures 1 through 3 are, by reference, made part of these specifications. 1 i. ti V 1 r cD t--4 F, - t' rD r* �s O ; 10 rr 0 by 10 \ CD C) o t p F.,. O w \ ul ri tD ro yaw mom o D r- f1 �0X ONE � `_—�, N Z z N O Z a O 0Z C O mad a u+ 0 0 rt id ri NO �---� � --' vU 4 I I . RENCH .0 • NATURAL SOIL COVER UNTREATED 6" D IAIAETE R BUILDING PAPER PERORATE PLASTIC PIPE— LAID FLAT AND 2 TO 3" WASHED GRAVEL LEVEL TRENCH SECTION NATURAL SOIL COVER UNTREATED BUILDING PAPER WASHED GRAVEL 6" DIAMETER — TO 3 2 PLASTIC 0. n,7, PIPE 12" 4) 0 "toe, TRENCH PROFILE VINCE BER1411ARDT E A 10 Drain 1'i.eld Trench Detail Vince Bernhardt Property, Orono 00 L I I.A. ME COMBS-KNUTSON ASSOCIATES, IN CONSULTING ENGINEERS N LAND SURVEYORS • SITE PLANNERS November 3, 1975 Mr. Hank Muhich Zoning Administrator City of Orono P.O. Box 66 Crystal Bay, Minnesota 55323 Subject: On -Site Disposal System Lot 4, Block 1, Riedel Company's Stubbs' Bay Addition Dear Hank: We have reviewed the proposed on -site sanitary disposal system for Vincent Bernhardt's on the subject lot, as pre- pared by Eugene A. Hickok and Associates. We concur with their recommendations and we recommend your approval, subject to one change. The proposal recommends a 3 foot wide trench. The standards suggest that a 3 foot wide trench has an effective bottom area of only 2.5 feet. This would result in a require- ment of 400 linear feet of the in lieu of the 333 feet proposed. This would mean that 4 lines, 100 feet long, are required. With this change, we recommend your approval of the subject project. If you have any questions, please do not hesitate to contact US. Very truly yours, McCOMBS-KNUTSON ASSOCIATES, INC. Willi4m H. McCombs, P.E. WHM:1as cc: Philip J. Pins Hickok and Associates 12805 OLSON MEMORIAL HIGHWAY, MINNEAP^LIS. MINNESOTA 55"1 TELEPHONE (612) 559-3700 36 NORTH MAIN STREET, HUTCHINSON, MINNESOTA 55350 TELEPHONE (612) 879-8029 SOUTHWEST ENGINEERING DIVISION, MARSHALL, MINNESOTA 56258 TELEPHONE (507) 532-5820 545 Indian Mound Wayzata, Minresota 55391 (612)473-4224 November 4, 1975 Mr. Hank Muhich Zoning Administrator City of Orono P.O. Box 66 Crystal Bay, Minnesota 55323 Re: On Site Waste Disposal System For Mr. James M. Morvek and Mr. Vincent Bernhardt Dear Mr. Muhich: There is room on Mr. Morvek's property at Lot 7, grim Johnston's Rearrangement of Albee Long Lake Addition to increase the total lineal drain tile footage to 400 feet as suggested by Mr. McCombs in his November 3, 1975 letter to you. Also there is room on Mr. Bernhardt's property at Lot 4, Block 1, Riedel Company's Stubbs Bay Addition ,e for four 100-foot long drain tile lines as suggested �t�,ctnt �• by Mr. McCombs in his November 3, 1975 letter to you. If you have any questions about the above matters please contact me. Sincerely, EUGENE A. HICKOK AND ASSOCIATES Philip ens PJP/cml . W ' 545 Indian Mound Wayzata, Minnesota 55391 (612)473-4224 November 12, 1975 Mr. William McCombs McCombs -Knutson Associates, Inc. 12805 Olson Memorial Highway Minneapolis, Minnesota Re: On Land Disposal System for Bob Robertson's Residence on Watertown Road - Orono Dear Mr. McCombs: Enclosed is a copy of the revised specification for the above referenced project that you requested in our telephone conversation this afternoon. Sincerely, EUGGEENE A. HICKOK AND ASSOCIATES Philip J. Pins PJP/cml Enclosure V cc: H. Muhich S7 6 A , 61/'?, SPECIFICATIONS PROPOSED ON -SITE DISPOSAL SYSTEM BOB ROBERTSON NEAR INTERSECTION OF STUBBS BAY ROAD & WATERTOWN ROAD ON WATERTOWN ROAD - ORONO SEPTIC TANK - Two 1000-gallon capacity tanks, in series, manufactured and installed in compliance with City code. See Figure 2 for location. DOSING CHAMBER - One 500-gallon capacity tank downstream from the second septic tank manufactured and installed in compliance with City code for septic tanks, including a siphon or pump with discharge rate of no less than 25 gpm. The purpose of the dosing chamber is to de- liver septic effluent to the drainfield in periodic doses of 450 to 500 gallons at rates of 25 gpm or more rather than in smaller, more frequent applications. See Figure 2 for location. DRAINFIELD - Indicated average percolation rate is 19.6 minutes per inch. State code required mini- mum 208 square feet of drainfield area for each bedroom at this percolation rate. Proposed total drainfield area is 1000 square feet. Proposed drainfield trench bottom width is three (3) feet having a 2.5 square feet effective area per lineal foot. The required le of drain tile line is 400 feet. Four as 100 feet long and 8 feet apart are : .,unended. Proposed drainfield locations are shown in Figure 2. Drainfield trench details showing materials and installation are shown in Figure 3. Estimated quality of washed gravel or crushed rock for pipe bedding is 75 cubic yards. Figures 1 through 3 are, by reference, made part of these specifications.