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Page 1 of 7 <br /> INWO <br /> Vicki McCartney [EH] <br /> From: David Atwater[dbatwater@vandepol.us] <br /> Sent: Monday, November 26, 2012 3:49 PM <br /> To: Adrienne Ellsaesser[EH]; David Schwedler <br /> Cc: George V. Hartmann; rmarty@advgeoenv.com; wlittle@advgeoenv.com; tcuellar@advgeoenv.com; <br /> Nuel Henderson [EH]; Donna Heran [EH]; James Myles [CC]; Ron Van De Pol; Vicki McCartney [EH] <br /> Subject: RE: Pacific Avenue Explosive Well Destruction <br /> Ms. Ellsaesser, <br /> So you are saying that if the explosive event does not occur,then you will assume that the well <br /> destruction has not been properly performed and we will not, therefore, be granted final closure of the <br /> site? Further, as such, the county will take the liability for problems that arise from, or related to your <br /> requirements. <br /> There have been so many BIG natural gas related incidents reported in the media lately, large <br /> dangerous and disastrous occurrences that I do not want liability for. Can you understand that? <br /> I will assume that the County, local Fire and PG & E have protocols for local area inspections and follow <br /> up to see that there are no unusual events related to any of my concerns? <br /> Thank you, <br /> From: Adrienne Ellsaesser [EH] [mailto:AEllsaesser@sjcehd.com] <br /> Sent: Monday, November 26, 2012 8:45 AM <br /> To: David Atwater; David 5chwedler <br /> Cc: George V. Hartmann; rmarty@advgeoenv.com; wlittle@advgeoenv.com; tcuellar@advgeoenv.com; <br /> Nuel Henderson [EH]; Donna Heran [EH]; James Myles [CC]; Ron Van De Pol; Vicki McCartney [EH] <br /> Subject: Pacific Avenue Explosive Well Destruction <br /> Mr Atwater, <br /> The issue here is that as part of the clean—up activities at this facility a Continuous Mulit-channel Tube <br /> (CMT) monitoring well was installed. In order for our Department to close this site and issue you a No <br /> Further Action Required, all monitoring wells must be properly destroyed. The material used for these <br /> wells makes it problematic for destruction. The San Joaquin County Standards require: <br /> 1. If the well construction is unknown and/or is located in an area of known or suspected <br /> pollution or contamination, the well shall be destroyed by removing all material within the <br /> original borehole (including the well casing, screen, filter pack, and annular seal); and the <br /> created hole filled completely with appropriate sealing material. <br /> The first time a CMT wells was destroyed in this county it was by over drilling. The material stretched <br /> and tangled around the drill bit, until the drill bit pushed the CMT against the borehole and drilled on <br /> past it . It could not be cut by the drill bit. Only the first 20 feet could be removed. We cannot allow a <br /> CMT well to be destroyed by this method alone, as we know over drilling will not remove the well casing <br /> and properly destroy the well. <br /> Please discuss this issue with your consultant to determine and propose to our Department a <br /> 11/26/2012 <br />