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B..s. „ Rom, <br />2335 W. VIOAM4 errV*"" 36 <br />A A004 MiaftWe1a ssffs <br />PAmww 6364600 <br />February 13, 1978 <br />Mr. Tom Jacobs <br />Building Inspector <br />City of Orono <br />Box 66 <br />Crystal Bay, Mn. 55323 <br />Re: Mason Mason Builders <br />Percolation Tests at <br />Our File No. 139 <br />Dear Mr. Jacobs: <br />3630 Eileen Street .. <br />Otto G. Bonestroo, P.E. <br />Robert W. Rosette, " <br />Joseph C. Anderllk, <br />Bradford A. Lemberg, P.E <br />Robert D. Frlgaard, P.E. <br />Richard E. Turner, P.E. <br />James C. Olson, P.E. <br />Lawrence F. Feldslen, P.E. <br />Glenn R. Cook. P.E. <br />Keith A. Gordon, P.E. <br />Thomas E. Noyes, P.E. <br />Richard W. Foster, P.E. <br />Robert G. Schunichl. P.E. <br />Marvin L. Sorvala, P.E. <br />Donald C. Burgardt, P.E. <br />Kenneth R. Meister, P.E. <br />Charles A. Erickson <br />Leo M. Pawelsky <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 Testinr The percolation <br />testa taken approximately a week ago failed to meet minimum requirements for <br />soil absorption systems. It was indicated that freezing temperatures and frost <br />may have had an adverse affect on the test results. Mr. Mason requested some <br />kind of interims or contingency aprroval 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 to <br />close to call." He can offer no other conclusive collaborating 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 soil absorption <br />system has been submitted. <br />Yours very truly, !! _� <br />BONESTROO, ROSE ERLIK & ASSOCIATES, INC. <br />J dm` &.0s o <br />.JCO:li <br />I i <br />