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Ba al4aa, Rom, 4m&41A a 14ddocJa&i, Am ewa"&-rq C"94we" <br />.2335 IV. /4aft4 -#IpAu" 86 <br />Otto G. Bonestroo. P.E. <br />Lawrence F. Feldit•n, P.E. <br />St A4 MLure"& <br />Robert W. Rosen, P.E. <br />Glenn R. Cook, P.E. <br />551i3 <br />Joseph C. Anderllk, P.E. <br />Keith A. Gordon, P.E. <br />Bradford A. LemberS. P.E. <br />Thomas E. Noyes, P.E. <br />p e: 636-k600 <br />Robert D. FriSeard, P.E. <br />Richard W. Foster, P.E. <br />Richard E. Turner, P.E. <br />James C. Olson, P.E. <br />February 13, 1978 <br />Mr. Tom Jacobs <br />Building Inspector <br />City of Orono <br />Box 66 f <br />Crystal Bay, Mn. 55323 <br />Re: Mason Builders <br />Percolation Tests 3630 Eileen Street <br />Our File No. 139 <br />Dear Mr. Jacobs: <br />Robert G. Schunicht, P.E. <br />Marvin L. Sorvala, l.E. <br />Donald C. BurSordr, P.E. <br />Kenneth R. Metrter, P.E. <br />Charles A. Erickson <br />Leo M. lavrelsky <br />Harlan M. Olson <br />We received a telephone request from Mr. Bob Mason today relative to percolation <br />tests taken at the above address by Braun Engineering Testing. The percolation <br />tests taken approximately a week ago failed to meet minimum requirements for <br />soil absorption systems. It was indicated that freezing temperatures and frost <br />Inay have had an adverse affect on the test results. Mr. Mason requested some <br />kind of interims or contingency approval of the septic system until summer, so <br />he could get a building permit. <br />We checked with Mr. Ron Schaffer of Braun Engineering Testing (941-5600" who <br />reviewed the test procedures. Mr. Schaffer informed us that the soil boring in- <br />dicated sandy clay till material which he said was a marginally accepted soil. <br />Mr. Shaffer also stated that freezing temperatures and frost may possibly had an <br />adverse affect on the test results, but he further stated that "- - - - it is too <br />close to call." "Fie can offer no other conclusive col:aborating opinion of the <br />acceptability of the soils for septic system design. <br />We recommend that no building permit be granted to Mason Builders for the above <br />subject lot until satisfactory evidence of acceptable soils for a eoil absorption <br />system has been submitted. <br />Yours very truly, <br />BON\ EST, ROSE ,ADTDERLIK & ASSOCIATES, INC. <br />Jam" C. Olso <br />JCO:li <br />