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Jeff Wong [EH] <br /> From: Margaret Lagorio [EH] <br /> Sent: Thursday, March 11, 2004 4:07 PM <br /> To: Nuel Henderson [EH]; Adrienne Ellsaesser[EH]; Mike Infurna [EH]; Harlin Knoll [EH]; Jeff <br /> Wong [EH]; Lori Duncan [EH]; Willy Ng [EH]; Vicki McCartney [EH] <br /> Subject: Monitoring well construction and destruction <br /> As a follow up to our discussion on the above topic at our unit meeting yesterday, I reviewed the California Well Standards <br /> Sections on Monitoring well construction and destruction. Spacers are required in nested monitoring wells within a single <br /> borehole and within the sealed interval. <br /> . The section on additions requirements for monitoring wells in urban areas has a <br /> caviat of unless otherwise approved by the enforcing agency, so for consistency on pressure grouted destructions follow <br /> the San Joaquin County Standards for the excavation one foot larger in diameter than the originally drilled hole to a dem <br /> of 3 feet etc. (Section 13.17.12). Deviation should have prior approval and the reason noted in the comment section. <br /> k)kafA- <br /> ��pps O 6,t WeS-�rO <br /> Ilky ire te�f C <br /> bro �(� f ilQ �kCGZV�`� ( 0 7'k'� <br /> yy <br /> Cc. Q S <br /> MoreA 0 e- --�O <br /> P/L <br /> � C <br /> OV <br /> pre-SSur-e- 3rov� ) <br /> 1 �� <br />