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Ceologuaf?echnus 2nc Page 4 <br /> Groundwater Monitorm'Report <br /> Project No 425 2 <br /> September 22, 1998 <br /> 3.0 CONCLUSIONS AND RECOMMENDATIONS <br /> The following conclusions have been drawn regarding the status of the groundwater at this <br /> site and recommendations for future work <br /> Conclusions <br /> 1 Petroleum hydrocarbons are present in five of the nine monitoring wells <br /> 2 The shallow water table groundwater plume is laterally defined except to the west <br /> 3 Free floating gasoline was present in MW-2 in February 1998 but was not present during <br /> this monitoring event <br /> 4 Groundwater gradient historically flows in a northern direction at about 0 002 ft/ft <br /> 5 Two domestic water wells, located within about 150 feet down gradient from MW-2, and <br /> one domestic well, located approximately 120 feet cross gradient, continue to be non- <br /> detect for gasoline compounds <br /> 6 With several domestic wells associated with the residence surrounding the property and <br /> the wells for the elementary school located a short distance northeast of this property, this <br /> groundwater plume appears to continue to pose a significant threat to public health and <br /> the environment <br />�. Recommendations <br /> The following recommendations are made <br /> 1 On a monthly basis monitor for free product in MW-2 to determine the frequency that it <br />' reappears <br /> 2 Three additional deeper screened wells were installed at the site during the last week of <br /> June and first of July Once these wells have been developed they will be included in the <br /> quarterly monitoring schedule <br /> 3 The wells should be sampled for natural attenuation parameters during future monitoring <br /> events so it maybe determined if the plume is stable, expanding, or shrinking <br /> 4.0 LIMITATIONS <br />' d in accordance with the accepted standards and practices of the field <br /> This report was prepare p <br />' of environmental geology, groundwater hydrology and good business practices It should be <br /> recognized that definition and evaluation of environmental conditions is a difficult and <br /> inexact science Judgments leading to conclusions and recommendations are generally made <br /> with an incomplete knowledge of the site specific conditions present <br /> The tasks proposed and completed during this project were reviewed and approved by the <br />' local regulatory agency for compliance with the law No warranty, expressed or implied, is <br /> made <br />