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Ms Margaret Lagono S E C ® R <br /> August 1, 2005 <br /> Page 6 <br /> . SECOR will continue to operate and evaluate the effectiveness of the ozone sparge <br /> System during the third quarter 2005 <br /> THIS QUARTER ACTIVITIES (Second Quarter 2005) <br /> 1 TRC performed quarterly groundwater monitoring and sampling <br /> 2 Prepared and submitted a quarterly summary report <br /> 3 Performed remedial system O&M <br /> NEXT QUARTER ACTIVITIES (Third Quarter 2005) <br /> 1 Prepare and submit a quarterly summary and monitoring report <br /> 2 TRC to perform quarterly groundwater monitoring and sampling <br /> 3 Perform remedial system O&M <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 <br /> judgment in accordance with current standards of professional practice, no other <br /> warranty is expressed or implied SECOR assumes no responsibility for exploratory <br /> borings or data reported by other consultants or contractors <br /> �oQRpFESSIpNq!Sincerely, <br /> SECOR International Incorporated 5: E B �O <br /> J <br /> C5 9rn <br /> � * EXP 12/31/2006 <br /> Rusty Benkosi <br /> P E sT CML �P <br /> Principal Engir gTFOFCAL�F��� <br /> Attachments <br /> Table 1 - Ozone Injection System Operating Data <br /> Table 2 - Ozone Infection System Groundwater Monitoring Data <br /> Figure 1 - Site Plan <br /> Figure 2 - TPHg and MtBE Concentrations versus Time —Well MW-1 <br /> Figure 3 - TPHg and MtBE Concentrations versus Time—Well MW-2 <br /> Figure 4 - TPHg and MtBE Concentrations versus Time—Well MW-3 <br /> Attachment 1 —TRC's Quarterly Monitoring Report—Apnl through June 2005 <br /> Attachment 2 — Remediation System Certified Laboratory Analytical Reports and Chain- <br /> of-Custody Documentation <br /> Attachment 3 — Remediation System Field Data Sheets <br /> 5886 202005 QSSR SECOR International Incorporated <br />