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<br /> 77-1p9B
<br /> I� Brsuer $ Associates� Inc. _z.
<br /> . Nuvember 17, 1978
<br /> � T1e boriags were probed immodiately aftar their complotion
<br /> to check for the presence of groundwator. The borin�s were
<br /> also rechecked one day later.
<br /> � The percolation tests were run in 6-
<br /> �
<br /> to aa approxi�ate de th of 36 inchesinfn accordance�withdproled
<br /> cedures recomaiended y the City of Orono. In accordance with
<br /> � thesa procedures, the bottom and sidcs of the h
<br /> scratch�•d with a knife blade to remove any smearedssoil8
<br /> �� sur:aces and to provide a natural soil interface into which
<br /> the water may percolate. . Two inches of crushed rock were
<br /> then placed in the bottom of the holes to prevent scouring.
<br /> ; The '�oles were then carefully filled with clear water to a
<br /> minimwu depth of 12 inches ovcr thc to� of the rock layer and
<br /> allowed to saok overnight with thc percolation tcsts bein�
<br /> conducted the following day.
<br /> � RESULTS
<br /> �
<br /> � The logs of the soils encountered in the borings aad the water
<br /> level obsrrvations are shown on the attached Log of Borin�
<br /> ' ' sheet
<br /> ;
<br /> f Borin� B-2, taken in Lot 2, Block 2, encountered a dark broMa
<br /> ! silty sand topsoil layer from the surfuce to a
<br /> 4-foet depth $nd was immediately undcrlain by coarse�alluviume
<br /> �� silty sand between the 4 and the 7-foot d@pth. A clayey gand „
<br /> glacial till was then encountered from the 7-foot da
<br /> approximately the 12-foot depth and was in turn underlainpby
<br /> a sandy clay glacial till to its 15-foot termi,natioa depth.
<br /> � Borings B-4 and B-4A encountcred 1-foot of black silty sand _ _
<br /> topsoil underlain by sandy clay to thei
<br /> r termination e
<br /> � ::�d pths.
<br /> Borings B-8A, 8-8B� and B-8C, taken�o
<br /> 1/2 to 2 feet of black siity ciuyey sar�d���ap�'`��°��,��µ.iiltuntered
<br /> clayey sand extended to depths of S to 8 feat BAd:`. Mis b]'OMAr�tl
<br /> � color below the topsoil . At depth the bor�n s On�Ou��eTad� '� ;, ; �
<br /> brown cla,yey sand, N gg ;�
<br /> v�� a�',f�'�sg '?qj ,��: '.�<�,
<br /> � Water was encountcred only in borinn B-4 wherc it was enCoun-
<br /> tered at the 10�-foot dcE,th.
<br /> The percolation tests indicated soil absor�tivities in minutes
<br /> � per inch (mpi) as follows:
<br /> �
<br /> �
<br /> B�un� . �
<br /> � �prOMKt11N0 TSi11N0 r
<br /> ':«
<br /> .. . .. �.. . . ... . a,.�Y.�.. ...,.n,.. r. . .•-. . . . ...:,,,,r,�,�tw�« ., ,.�....�....,,",,,,er,,,tr,,,+�.,�.�..&rri:F��"�;'�"""�"�'� ;�t'�t:',. .���
<br /> �f '�
<br /> '.t.
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