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BRA <br />ENGINEERING TES <br />MINNESOTA: Mlnneapoh,. Hibbing. St Cloud. Rochester St Paul 9E co KLUEM k o E <br />of <br />4ad,Aiec Of"(es N H ANOERSON OAIE R <br />G r J LRAiG y v <br />NORTH OAKOTA. Bismarck, Williston. MONTANA: Billings hAuSLER PE <br />Reply To: <br />P.O. Box 35108 <br />Mpls., MN 55435 <br />(612) 941-5600 <br />May 28, 1987 <br />Park Construction <br />Attn: Mr. John Gannon <br />7900 Beech Street <br />Minneapolis, MN 55432 <br />RE: 73-157 ENGINEERING OPINION <br />Addition of Fill to <br />Existing Landfill <br />South of TH-12 at <br />Classen Lake <br />Orono, Mi, nnesota <br />Mr. Gannon: <br />As you requested, we have reviewed the inr._..d:ion from three <br />standard penetration test borings that we peri,�rmed in April, <br />1973, with respect to your description of the i.deltional fill <br />placement that is proposed. The concern of memhe:'.> of the City <br />Council is whether the addition of fill onto tt'.e existing land- <br />fill area will be cause for instability and possiLle failure into <br />the underlying organic soils. <br />The results of the previous borings taken in the proposed land- <br />fill area in 1973 encountered peat and mucx from the surface to <br />depths ranging from 22 feet. to 35 feet. We understand that the <br />landfill was not extended east over the proposed landfill area as <br />depicted on the -ached sketch. Subsurface soil conditions in <br />the area of thr: existing landfill have been assumed similar <br />because the area is depicted as a large wetland; although depths <br />of the organic soils likely vary. <br />You indicated that the existing landfill area was first filled in <br />the late 1950's. At the present time, you indicated your desire <br />to place additions'_ fill over the existing landfill area which <br />will consist of a uniform 5-toot cap of mineral fill over the <br />existing surface elevations in the present landfill area. <br />CONSt_1L.T1Nti FNGiNEEQS SOILS AND MA?ERIALS <br />AM~ Company for Chem -col 3 Env,ron"vntei fest�nq and Comoun,nq - Afoun Enwro4,mental me <br />