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Station #11191 <br /> Quarterly Groundwater Monitoring Report (102006) <br /> April 28, 2006 <br /> iPage 4 <br /> Dissolved TPHg Distribution <br /> The highest concentration of TPHg found In first quarter 2006 was 6,300 PglL (MW-4) <br /> Concentrations of TPHg Increased between fourth quarter 2005 and first quarter 2006 in three <br /> wells, MW-1, MW-2, and MW-4 TPHg remained unchanged, and below laboratory reporting <br /> limits, in the remainder of the monitoring wells, MW-3, MW-5, MW-6, and MW-7 <br /> Monthly Groundwater Sampling <br /> Monthly groundwater samples were collected by Blaine Tech Services, Inc from monitoring <br /> wells MW-1 through MW-7, and were submitted to Sequoia Analytical laboratory for analysis of <br /> GRO, BTEX, and MtBE by EPA Method 8260B During first quarter 2006, groundwater samples <br /> were collected from the site wells on January 17, 2006 Results of the monthly groundwater <br /> sampling events are summarized in Table 1 <br /> LIMITATIONS <br /> This report presents our understanding of existing conditions at the subject site The <br /> conclusions contained herein are based on the analytical results, and professional judgment In <br /> accordance with current standards of professional practice, no other warranty is expressed or <br /> Implied SECOR assumes no responsibility for exploratory borings or data reported by other <br /> consultants or contractors <br /> Sincerely, <br /> SECOR International Incorporated <br /> Prepared by Reviewed by <br /> �V44 szd� 4"-�-�40t'�2 <br /> Kimberly Sbaman Qp�pFE5SIpy Catherine Spells <br /> Staff Scientist �p _ a s may, Project Manager <br /> A <br /> Reviewed by a h0 G 058399 A <br /> 1-06 <br /> V� ply CMI. <br /> Rusty Benkosk E OFCk W <br /> Principal En eer <br /> i <br /> 11BP-ARC0105 BP-COP Sites1111911ReportslQ1V1Rs111191 1 Q06 QMR final doc SECOR International Incorporated <br />