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Page 1 of 2 <br /> Mike Infurna [EH] <br /> From: William Little [wlittle@advgeoenv.com] <br /> Sent: Friday, June 10, 2011 3:22 PM <br /> To: Mike Infurna [EH] <br /> Subject: Monitoring Network - 248 Park Street <br /> Mike, I am of the professional opinion that the wells without contamination are not a great <br /> cause for concern (especially when compared to the other wells). The wells still serve the <br /> purpose of defining the site conditions at 248 East Park Street. <br /> • well MW-1 now useless to detect the dissolved plume at the UST area (ND), Now the <br /> real wells are DPE 1/18/19. <br /> • well MW-4 is up-gradient of the dissolved plume and off of the site (ND) and <br /> • wells MW-3 and well MW-6 (MTBE) down gradient of the Farmer Property dissolved <br /> plume and yet still HC non-detect?. <br /> • Well MW-7 is up-gradient of the dissolved plume and could of concern, yet there has <br /> not been a HC detection for five years. <br /> I recommend the performance of sampling for these wells every two years (based on the <br /> strong monitoring history) with collection of DTW and Well Maintenance semi-annual. <br /> Thank you for your consideration. <br /> Please call me if you have any questions. <br /> Sincerely, <br /> William R. Little <br /> California Professional Geologist 7473 <br /> Oregon Registered Geologist G2254 <br /> Washington Licensed Geologist 2778 <br /> Advanced GeoEnvironmental Inc. <br /> Stockton-Santa Rosa-Mon terey•Brea•Spokane•Reno <br /> 4671006 <br /> This email/fax message is for the sole use of the intended recipient(s)and may contain confidential and privileged information.Any <br /> unauthorized review, use,disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient,please contact the <br /> sender by email/fax and destroy all paper and electronic copies of the original message. <br /> From: William Little [mailto:wlittle@advgeoenv.com] <br /> Sent: Friday, June 10, 2011 11:47 AM <br /> To: minfurna@sjcehd.com <br /> Subject: 248 Park Street <br /> Mike attached is a Timeline - <br /> April 2009 - 5 yr review letter recommends active remediation without delay. <br /> July 2009 - EHD letter directs work plan to assess interim remediation within 60 days. <br /> October 2009 - AGE submits the IRAWP for DPE - three wells at UST area. <br /> April 2010 - EHD letter directs `Pilot test for DPE' as interim remediation. EHD direct SCM <br /> preparation with mass estimate for dissolved plume and sorbed plume. <br /> 6/10/2011 <br />