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Ceolagccal TeclueicslHe Page 7 <br /> Groundwater Monitoring Report <br /> Project No 425 2 <br /> January 25, 2002 <br /> ' Recommendations <br /> The following recommendations are made <br /> ' 1 The heart of the contaminated soil in the vicinity of the former UST field was excavated <br /> during the week of July 23, 2001 Residual hydrocarbons remain in the ground around <br /> - MW-2, 102, 202, under the shoulder of and Durham Ferry Road and under the building <br /> ' 2 The current quarterly monitoring schedule should be maintained to determine <br /> contaminant trends <br /> ' 3 The 12 monitoring wells and 3 domestic wells should be sampled for natural attenuation <br /> parameters during future monitoring events so it may be determined if remediation by <br /> natural attenuation is occurring This testing should be performed six to 9 months after <br /> ' the excavation is complete <br /> d Prior to backfilling the excavation, bio-venting piping was installed and the gravel <br /> poured in around it This bio-venting system should be installed to continue the <br /> contaminant removal in the vicinity of MW-2 A work plan is in progress and will be <br /> submitted by mid February 2002 <br /> 4.0 LIMITATIONS <br /> This i eport was prepared in accordance with the accepted standards and practices of the <br /> field of environmental geology, groundwater hydrology and good business practices It <br /> should be recognized that definition and evaluation of environmental conditions is a <br /> ' difficult and inexact science Judgments leading to conclusions and recommendations are <br /> generally made 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 /> • <br />