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• Page 1 of 1 <br /> Adrienne Ellsaesser [EH] <br /> From: Timothy O'Brien [tobrien@waterboards.ca.gov] <br /> Sent: Wednesday, September 22, 2010 4:18 PM <br /> To: Doug Heard <br /> Cc: MeyerhoferPF@cdm.com; Adrienne Ellsaesser[EH] <br /> Subject: Re: Piezometer destruction, <br /> Attachments: Granberg 25 May 2010.PDF <br /> Doug, <br /> Attached is the NOA we discussed. I am seeking written documentation that the dewatering activities within <br /> 1,000 feet of the right angle corner in the pipeline (as described in the attached Monitoring and Reporting <br /> Program -groundwater section) have concluded and future dewatering related to the construction activity is not <br /> needed. <br /> Adrienne, because the NOA's Monitoring and Reporting Program requires groundwater elevation monitoring <br /> whenever dewatering activity occurs within 1,000 feet of the pipeline right angle (near Herman and Helen's <br /> Marina), I am not approving the destruction of the wells until written confirmation of the conclusion of dewatering <br /> activities is received. <br /> Let me know if you have any questions on this. <br /> Timothy R. O'Brien <br /> Engineering Geologist <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive,#200 <br /> Rancho Cordova, CA 95670-6114 <br /> 916464-4616 <br /> 916464-4775 fax <br /> tobrien@waterboards.ca.gov <br /> >>> Doug Heard <DHeard@kleinfelder.com>9/22/2010 2:13 PM >>> <br /> Tim please see the attached short work plan discussing the piezometer destruction and permit approval. <br /> Sorry for any mis-understanding regarding prior approval. Let me know if you have any questions, my cell no. <br /> is 209-993-8392. <br /> The piezometers are constructed of 2-inch PVC. <br /> 9/22/2010 <br />