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• large hole was present 2 to 3-feet bgs However, no water was observed <br /> entering the well from this hole A tree root was observed protruding <br /> from the hole and tree roots were also noted during the brushing of the <br /> well A casing seam was noted at 27-feet and appeared to be in good <br /> overall condition with no probable leakage evident The cement bond log <br /> for this well indicated good cement from the SWL of 8-feet bgs to 44-feet <br /> bgs, some cement from 44-feet to 53-feet bgs, and less cement from 53- <br /> feet <br /> 3- <br /> feet bgs to 59 9-feet bgs Water apparently enters this well from a depth <br /> deeper than 44-feet bgs The pump intake was located at a depth of 38- <br /> feet <br /> 8- <br /> feet bgs Based on the information gathered on this well construction, <br /> this well does not appear to be a significant conduit for the vertical <br /> migration of MTBE in the site vicinity <br /> In addition, this well appears to be sufficiently protected against shallow <br /> zone MTBE contamination due to the presence of a cement sanitary seal <br /> For this reason, it appears that this well could be put back into service <br /> since no MTBE has been previously detected in water samples collected <br /> from this well Water samples should, however, continue to be collected <br /> and analyzed from this well on a periodic basis to insure that this well <br /> continues to produce water not impacted by MTBE <br /> 5.0 LIMITATIONS <br /> The descriptions of the wells include observations made by ASE and Zim <br /> Industries during the well preparation, and observations of the video logs <br /> made by ASE, Zim Industries and Welenco Please note that the <br /> observations made from the video logs are limited by camera angles, <br /> build-up on the well casing and visibility though the water in the well The <br /> descriptions of the wells are based on the interpretation of only the parts <br /> of the well that were visible during the video logging Other <br /> interpretations of the visible features in the wells are also possible <br /> Interpretations of the cement-bond logs were provided by Welenco ASE's <br /> interpretation of the construction of the wells is based on Welenco's <br /> interpretation of the cement-bond logs ASE makes no guarantee to the <br /> accuracy of the cement-bond log interpretations If necessary, you may <br /> contact Welenco for further information on the interpretation of these <br /> logs <br /> A copy of the actual video logs and cement-bond log data is available for <br /> review at ASE's Danville office Please contact ASE if you would like t o <br /> . review this data <br /> Franks One Stop Report — February 2001 <br /> -5- <br />