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Cc: Brian.Magee(cberm.com; Scott Forbess <br /> Subject: Update - Please respond <br /> Hi Roberto, <br /> We have a small deviation from the ISCO pilot test work plan and need your written approval for the well inspector: can <br /> you please respond ASAP with an approval,or contact me with questions?This could impact our work in the field <br /> tonight, so your timely response is much appreciated. Please reply all when you respond. <br /> The proposed change is to use a full bentonite pellet seal between the dual-nested monitoring well screen interval <br /> layers. Originally we spec'd a cement grout seal between the screens.The reason we seek approval do this is for <br /> efficiency reasons-- grout takes a full day to cure meaning each well takes 2 days to install. We would like to switch to <br /> the full bentonite pellet seal in order to install one monitoring well per night. Both screens are located within 10 feet of <br /> one another in the shallow A-zone aquifer(<75 ft bgs). <br /> Let me know if you have any questions and thanks in advance, <br /> Caryn <br /> Caryn Quist <br /> Senior Staff Engineer <br /> ------------------------------------------------------ <br /> 3043 Gold Canal Drive,Suite 201 <br /> Rancho Cordova,California 95670 <br /> Office:916.637.8048 Geosyntec <br /> Direct: 916.637.8331 <br /> Cell: 916.712.3991 COl15LL tants <br /> Fax: 916.637.8321 <br /> www.Geosyntec.com I sc;cnnyts r lunuvnrom <br /> This electronic mail message contains information that(a)is or may be LEGALLY PRIVILEGED,CONFIDENTIAL, <br /> PROPRIETARY IN NATURE,OR OTHERWISE PROTECTED BY LAW FROM DISCLOSURE,and(b)is intended only for the use <br /> of the Addressee(s)named herein.If you are not the intended recipient,an addressee,or the person responsible for delivering this to an <br /> addressee,you are hereby notified that reading,using,copying,or distributing any part of this message is strictly prohibited.If you have <br /> received this electronic mail message in error,please contact us immediately and take the steps necessary to delete the message <br /> completely from your computer system. <br /> This message contains information which may be confidential,proprietary,privileged,or otherwise protected by law from disclosure or use by a third party.If you <br /> have received this message in error,please contact us immediately at(925)946-0455 and take the steps necessary to delete the message completely from your <br /> computer system.Thank you. <br /> Please visit ERM's web site:hho:/lw .em.com <br /> 2 <br />