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Port of Stockton page 2 <br /> Site 3, Port Roads 14 & G. <br /> Additionally, historical TPHg and Benzene concentration levels in MW3-2 and MW3-3 <br /> have and continue to exceed allowable limits-of contaminants allowed to be left in place <br /> without remediation. New MW3-6 also exceeds allowable limits for TPHg and Benzene <br /> and will.require additional sampling events to verify if this is a consistent concern. EHD <br /> cannot concur with your consultant's recommendation that "monitored natural <br /> attenuation s <br /> i theappropriate ro riate remed <br /> iation alternative for this site. <br /> After the new wells stabilize and if repeatable.samples indicate petroleum concentrations <br /> levels still exceed allowable limits, further investigation will be required to delineate the <br /> plume. After the extent of petroleum has been delineated, EHD will evaluate a <br /> Feasibility Study that evaluates at least two cost-effective remedial alternatives for <br /> returning this site to 'pre-UST release' conditions. <br /> You may contact me at minfurna(cbsicehd.com or by phone at (209) 468-3464 should <br /> you have any questions. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> Michael J. Infurna Jr., Se for REHS Margaret gorio, REHS <br /> LOP 1 Site Mitigation Unit IV Supervisor <br /> Ml/ <br /> c: CVRWQCB—James L.L. Barton, Sacramento. <br /> c: Geomatrix— Brad Loewen, 2444 Main St, #215 Fresno, CA. 93721-2734. <br /> c: SWRCB-CUF — Mark Owens, Sacramento. <br />