GROUNDWATER DATA GAPS INVESTIGATION, PHASE III, HUNTERS POINT SHIPYARD, SAN FRANCISCO, CA U.S. Department of the Navy, Southwest Division, San Diego, CA; Contract No. N68711-02-C-8211, 2002-2003; $1,680,212.00 This project consisted of two work elements: (1) groundwater monitoring and (2) monitoring well inspection and repair. Management of investigation-derived waste The groundwater monitoring consisted of performing two rounds of groundwater sampling. The total number of wells sampled in Round 1 and Round 2 were 255 and 122, respectively. The samples were analyzed for a range of constituents and results submitted for incorporation in the base-wide groundwater quality database. All investigation-derived wastewaters were stored on base in a Baker tank, characterized, and disposed of properly. The monitoring well inspection and repair consisted of the following activities: Inspecting and performing necessary minor (and, in some cases, major) repairs on 248 monitoring wells. The minor repair consisted of some or all of the following: standard maintenance (general cleaning of various components such as the vault, bolt threads, cap, TOC, locks, etc. and highlighting internal and external I.D.s), re-tapping of flange, rubber seal replacement, lock replacement, cap replacement, bolt replacement, and painting the stovepipe. Major repair consisted of total vault replacement. Groundwater sampling Documenting the inspection results and the repairs performed on each well in electronic format as an Excel spreadsheet and a PowerPoint file containing photographs of the repaired wells. Preparing a technical memorandum summarizing and discussing the results of well inspection and repair and recommendations for actions that should help maintain the wells in functioning conditions in a cost-effective manner. Electronically linking the well repair and current well condition summary table to well logs that show geologic well logs and well construction details. Preparing and distributing 50 compact disks containing the preceding files per the distribution list provided by the Navy. The major challenges of this project were (1) scheduling and staffing the work to ensure the stringent project schedule (e.g., when certain wells were least susceptible to tidal influence and wells were not being worked on by other contractors and subcontractors working at the base); (2) quick resolution of many issues that arose during the course of the project; and (3) maintaining high standards for final project deliverables. R&M met these challenges by deploying several field sampling crews, advanced work scheduling, close coordination with other contractors and subcontractors, and performing rigorous reviews of field activities and data submitted by subcontractors. Throughout the project, R&M kept the client and the project team abreast of work progress via preparation and distribution of status reports. A total 16 status reports were prepared that discussed work accomplishments, problems encountered and how resolved, and planned activities.