Laserfiche WebLink
COPY <br /> Joseph Olson D.B.A. <br /> Rusty Olson's--Soil and Percolation Testing <br /> Joseph J. Olson—MPCA License#810 <br /> 11481 Riverview Rd. NE, Hanover,MN 55341 <br /> (763)498-8779 Fax (763) 498-8290 <br /> July 24,2016 <br /> Kathryn Bode <br /> THIS (STEM IS DESIGNED FOR <br /> 960 Willow Drive N f BED R0OMS. ANY INCREASE IN N1J!MIR <br /> Orono, Hennepin CountyOF BEDROOMS INVALIDATES THIS DESIGN, <br /> To whom it may concern, <br /> I was contacted by Kathryn Bode to design the repair for the failing mound system at 960 Willow Drive N. <br /> In the city of Orono.The results of the inspection and design are as follows. <br /> Soil borings indicated that the existing rock bed does not meet the three foot separation to the periodically <br /> saturated soils.Therefore the solution is to remove the existing rock bed and any of the sand material under the rock <br /> that is not clean. Then replace it with clean sand to the proper elevation. <br /> The original soils under the uphill side of the rock bed at the north end are at elevation.-97.2.The system <br /> was original designed for 1.3 feet of sand under the uphill side of the rock bed. There is currently approximately 0.8 <br /> feet of sand under the rock bed.The bottom of the new rock bed must be placed at the elevation of 99.0 the bench <br /> mark for the elevations is the top of the existing well. <br /> The original soils under the uphill side of the rock bed at the south end are at elevation.-97.7.The system <br /> was original designed for 1.3 feet of sand under the uphill side of the rock bed.There is currently approximately 0.3 <br /> feet of sand under the rock bed.The bottom of the new rock bed must be placed at the elevation of 99.0 the bench <br /> mark for the elevations is the top of the existing well. <br /> The existing tanks will need to be abandoned and replaced with two new 1250 gallon septic tanks. If the lift <br /> station needs to be replaced it must be a 1000 gallon tank. <br /> There is one rock bed 50 feet in length. This will take approximately 17 cubic yards of rock with six inches <br /> of rock. <br /> The clean sand required will be approximately 32 cubic yards. This number may vary due to the fact that. <br /> We don't know how much of the sand will be removed until the rock bed is removed. <br /> The sandy loam cap will require approximately 15 cubic yards.The existing cap is 24 inches deep and can <br /> be reused. <br /> The laterals will take 144 lineal feet of two inch pipe with 14 inch perforations.Clean outs must be <br /> installed on the end of the laterals. <br /> The topsoil required will be approximately 61 cubic yards. <br /> The pump curve is 38 gpm 17 feet of head pressure. <br /> If you have any questions please call. CITY OF ORONO <br /> SEPTIC PE: IT PL �•R VIEW <br /> Sincerel • INSPECT•R ,t�, t; <br /> ),;Nt.r �� ".• PERMIT NO. <br /> - A PROVED AS SUBMITTED <br /> APPROVED WITH CORRECTIONS AS NOTED <br /> NOT APPROVED-CORRECT&RESUBMIT <br /> Joseph J.Olson These comments arc for your information. All work shall be done <br /> in full compliance with all.a,pli,;:h:e septic and toning code. <br /> Requirements inciudine itcn;ti nut,i,rci; c:t;iy noted in this review. <br /> KEEP THIS PLANSi,I ON SI,EAT ASL.TIMES <br />