Laserfiche WebLink
• DDJC-'l�dcy Well Installation Work Plan <br /> 1.0 INTRODUCTION following (well installation is tentatively <br /> scheduled to begin the week of 29 November): <br /> 1.1 The purpose of this document is to describe <br /> the well installation and well abandonment • Coordination with the San Joaquin County <br /> activities to be performed in support of Public Health Services,Environmental <br /> remediation efforts at Defense Distribution Health Division; a permit to install <br /> Depot San Jacquin,Tracy Site(DDJC)-Tracy. monitoring wells north of the DDJC-Tracy <br /> This well installation and abandonment effort Depot already exists (Permit No. 018554, <br /> implements recommendations from the Rust dated 3 March 1999); <br /> Environment and Infrastructure report Summary . Surface geophysical survey to locate <br /> of Deildrin Data and Recommendations for the underground utilities prior to drilling; <br /> Northwest Corner of the DDJC-Tracy Site and <br /> Western Annex(dated 19 May 1999),i.e.,to . Hollow stem auger drilling and continuous <br /> install and develop a monitoring well coring of well borehole; <br /> (LM174AU)in the western comer of the Annex, <br /> and abandon three injection wells (IW001- • Installation and development of one Above <br /> IW003) along the northern portion of the depot Upper Horizon monitoring well <br /> boundary. Included in this work plan are well (LM174AU); and <br /> installation, well development,well surveying, <br /> and well abandonment activities. • Well location surveying of LM174AU. <br /> 1.2 In addition to the recommendations for The proposed well location is shown on <br /> well installation and abandonment presented in Figure 2-1. <br /> the report Summary of Deildrin Data and <br /> Recommendations for the Northwest Corner of will Monitoring well installation activities <br /> the DDJC-Tracy Site and Western Annex, will be performed using procedures a described <br /> recommendations are also made to collect in the WorkDDJPlan <br /> (October Comprehensive <br /> groundwater samples quarterly for one year Field Work Plan (October ensiv field activities <br /> from new well LM174AU and existing wells will include(with Comprehensive Field Work <br /> Plan section numbers indicated): <br /> LM141AU and LM142AU to monitor <br /> concentrations of dieldrin in groundwater. This . Location Surveying Requirements (2.0); <br /> recommendation will be carried out as part of <br /> the Well Monitoring Program for DDJC-Tracy. . Hollow-Stem Auger Drilling(4.2); <br /> After these data are obtained, a determination <br /> will be made as to the need for groundwater • Groundwater Well Installation and <br /> extraction in this area. Development(5.0); <br /> 1.3 General procedures, specifications, and • General Field Documentation (9.1.10); <br /> requirements for the work to be performed as <br /> described in this work plan are presented in the Decontamination Procedures (9.3); <br /> DDJC-Sharpe/Tracy Sites Comprehensive Field . Investigation Derived Wastes (IDW) <br /> Work Plan(October 1998) and will be handling/disposal (10.0); and <br /> performed as set forth in that plan. <br /> • Health and Safety Procedures (12.0). <br /> 2.0 FIELD WORK SUMMARY <br /> 2.1.3 A summary of drilling and well <br /> 2.1 Well Installation Activities installation activities related to installation of <br /> well LM 174AU is presented in the remainder of <br /> 2.1.1 The work to be performed during this this work plan. <br /> field effort at DDJC-Tracy includes the <br /> WELLINST.doc 1 December 1999 <br />