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Former Manna Pro Site <br /> Page 2 � <br /> Quarterly Groundwater Monitoring Report <br /> �- Project No. 207.2 <br /> Lr May 8, 2006 <br /> ' Later, Groundwater Technology Inc. (GTI) installed four addition-al.monitoring <br /> wells, a combination groundwater/vapor extraction well and three observation <br /> wells. 1 <br /> Beginning in September of 2003, 'a 19-well soil vapor extraction / air sparge <br /> system commenced operations: The system has been in operation since then, <br /> although it is periodically shut down in •order to allow the subsurface fluids <br /> and gasses to equilibrate. In the interests. of clarity and minimization of <br /> clutter, the site maps attached to this report do not show the 19 service wells. <br /> 1.2 Scope of Work <br /> The following work was completed during this round of groundwater <br /> monitoring: <br /> 1. The depth to groundwater was measured in 10 monitoring wells, and one <br /> observation well located on, or near the site. <br /> l <br /> 2. Groundwater monitoring included sample collection and subsequent <br /> laboratory analysis from six of the monitoring wells. <br /> E <br /> k <br /> h <br /> 1 <br /> 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br />