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Mr Barton <br />' 06/27/2006 <br /> Page 4 of 5 <br /> • <br /> f • Groundwater at the site flowed to the east-southeast at an approximate horizontal hydraulic <br /> gradient of 0 017 ft/ft <br />' • Site-related constituents of concern were not detected above MDLs in groundwater samples with <br /> the exception of benzene in monitoring well MW-11D Benzene was detected below the <br />' California Primary MCL <br /> • TCE and PCE were detected in groundwater samples, however, these compounds are associated <br /> with off-site impacts <br /> Based on recent and historic groundwater monitoring results, a no further action required (NFAR) status <br />' is recommended for the site A NFAR request is currently being prepared for the site <br /> The next groundwater monitoring and sampling event has been tentatively scheduled for third quarter of <br /> 2006 If you have any questions or comments, please contact David Lay by telephone at (315) 671-9197 <br /> or by electronic mail at dwl q@,bbl-mc com or David Evans by telephone at 916) 843-1276 ext 226 or by <br /> electronic mail at devans@bbl-inc com <br /> Sincerely, <br /> BLASLAND, BOUCK&LEE, INC <br /> David W Lay, C P G QROFESSio <br /> Senior Geologist �4 P"? FL /C' <F"cl <br /> U C 65705 `>3 <br /> Michael P Fleischner, P E * EXP ° <br /> Principal Engineer s CIV0- <br /> TAT-OF C N W'��r <br /> JAS <br /> Attachments <br /> Figure l Groundwater Contour Map, April 20, 2006 <br /> Figure 2 PCE Isoconcentration Contour Map, April 20, 2006 <br /> I Attachment 1 Groundwater Monitoring& Sampling Report, Gettler-Ryan Inc ,May 24, 2006 <br /> Attachment 2 Groundwater Flow Direction Rose Diagram <br /> I <br /> 009603054 doc <br /> BLASLAND, BOUCK& LEE, INC <br /> an ARCADIS company <br />