Weeminuche Construction Authority After detailed design of cable trenches and final instrument specifications included as part of the instrument procurement process, AAI mobilized a field crew to the Ridges Basin Dam sight in June of 2005 to drill the boreholes and install the first piezometers and the inclinometer into the foundation rock at the bottom [...]
Other
Sandia National Laboratories AAI was contracted to Sandia National Laboratories to provide geotechnical, analytical, and field services to the Yucca Mountain site characterization studies in the early- to mid-1990s. AAI established an office in Las Vegas, Nevada, to support the project with up to ten engineers, scientists, and geologists. Modeling studies ranged from drift stability [...]
Confidential Energy Client Agapito Associates, Inc. (AAI) completed a geotechnical evaluation of cavity stability, inter-cavity pillar sizing, and subsidence potential for a proprietary, concept-level borehole hydraulic mining method developed for extracting bitumen-rich oil sands in the Athabasca oil sand deposit in northern Alberta, Canada. Numerical modeling was conducted using FLAC to simulate cavity response during [...]
Uranium Resource Estimate 43-101 Agapito Associates, Inc. (AAI) was engaged by Concentric Energy Corporation to complete the original independent NI 43-101 Technical Report and resource estimate for the Anderson Mine uranium and vanadium property located near the town of Wickenburg, Yavapai County, in west-central Arizona, USA. Mineralization occurs in the sequence of Miocene-age lacustrine (lake-bed) [...]
American Borate Company The Billie Mine utilized long-hole stoping with backfilling to extract borate. This mining method resulted in the creation of tall, narrow pillars which were critical to the stability of the mine. AAI was involved in the development of the mine plan and identification of the optimum pillar width. Pillar widths were selected [...]
Mining Engineering Support for Underground Mined Storage Caverns Since 2003, Agapito Associates, Inc. (AAI) has provided mining engineering support to PBESS for their underground mined hydrocarbon storage cavern business. This has included (1) design and construction support for multi-product caverns in China and Singapore, (2) design and construction support for one single product cavern in [...]
Confidential Investigation By reconstructing the pre-blast geometry based on construction photos and the blaster’s reports along with the post blast geology, the damage caused by a construction blast was determined to have been avoidable. The primary factors contributing to the incident were the weak zones identifed in the initial geologic investigations that were not accounted [...]
Through a test blasting program, guidelines were developed for blasting the foundation for the new parking facility located in downtown Juneau. The area was surrounded by previous development including a tunnel within 11 feet of the excavations neatline. The project included writing specification for the drilling and blasting as well as reviewing blast plans.
Solution Mining of Halite The stability and subsidence potential of solution-mined cavity clusters in a well-developed field in the Hutchinson salt were evaluated by AAI to provide a basis for modifications of existing state permit requirements. The mining method employed a cluster of four solution cavities overlying shale, without damage to the USDW. Initially, a [...]
Southern Electric International (SEI) AAI was retained by SEI to assess the subsidence potential of the Central Avenue Property in Wyandotte, Michigan, which is underlain by extensive solution-mined salt cavities. AAI conducted an on-site inspection looking for any physical evidence of significant subsidence. In addition, AAI researched and reviewed literature and records relating to salt [...]
Permitting Support for EPA Class I and II Underground Injection Wells AAI represented Copper Eagle Gas Storage (CEGS) in their pursuit of EPA underground injection control (UIC) permits. The proposed gas storage project involved solution mining salt to provide caverns for natural gas storage. The brine generated by solution mining the salt was proposed to [...]
Parsons Corporation-Colorado Department of TransportationIn 2010, Agapito Associates, Inc. (AAI) provided support to Parsons Corporation in preparing a plan to rehabilitate cross passage 5 in the Colorado Department of Transportation’s Hanging Lake Tunnel near Glenwood Springs, Colorado. As part of that evaluation, AAI mobilized core-drilling equipment to characterize the ground conditions behind the shotecrete lining [...]
HDR Engineering AAI completed the drilling and overcore stress measurement under contract to HDR Engineering, Inc., of the Carolinas (HDR) at the Duke Energy (Duke) Keowee Dam Spillway located at the Oconee Nuclear Station near Seneca, South Carolina. The principal purpose of the program was to drill observation core holes and measure the two-dimensional stress [...]
Dominion Generation AAI completed drilling, foundation permeability, and unconfined compressive strength/density testing along with an instrumentation program on behalf of Dominion Generation (Dominion) at the Roanoke Rapids concrete dam. The principal purpose of the program was to drill core holes in various sections of the concrete dam, install geotechnical instrumentation, and complete permeability testing on [...]
Acres International Agapito Associates, Inc. was contracted to perform all aspects of an overcoring stress determination project designed by Acres International. The object of the project was to determine the current stress condition in specific areas of the Robert Moses Niagara Power Project dam and power generation facility, and to provide a summary report. The [...]
U.S. Bureau of Reclamation In August 2003, Agapito Associates, Inc. was contracted to supply the specialized equipment and personnel required to make overcore USBM BDG method stress determinations at the USBR Seminoe Dam, located near Rawlins, WY. AAI provided the USBR with a summary report of the stress determinations and details of the overcoring activities. [...]
Gannett Fleming In April 2007, Agapito Associates, Inc. (AAI) mobilized to Roanoke Rapids, North Carolina, to provide core drilling services, complete stress determinations using the USBM BDG method, make borehole images, and install instrumentation for Gannett Fleming at Dominion Generation’s Roanoke Rapids Dam. Tasks included: Drill two 6-inch-diameter core holes vertically through the dam [...]
American Rock Salt Company, LLC The objective of this work was to calibrate the in situ properties of the overburden and mining horizon salt to reasonably reproduce measured subsidence and room closure and to simulate ground response to planned mining through 2011. A 2D numerical model was developed to predict mine-scale subsidence profiles along a [...]
PB Energy Storage Services, Inc. AAI has been involved with nearly all phases of the design and construction of an underground gas storage cavern located near Huntington, West Virginia. The overall project is being undertaken by PB Energy Storage Services, Inc., of Houston, Texas. AAI first became involved with the project in 2005 through cavern [...]
PB Energy Storage Services, Inc. AAI conducted a variety of design and project management tasks for PB Energy Storage Services, Inc., of Houston, Texas, related to the design and construction of a large underground gas storage complex located near the city of Zhuhai, China, south of Hong Kong. The facility contained two groups of storage [...]
Maiden Rock Mine Resistance Ventilation Designs Fairmount Minerals’ Maiden Rock underground sand mine historically delivered air to ventilate diesel-powered equipment at its working faces through high-resistance, 380-mm-diameter (15 inch) PVC distribution lines. In support of plans for expanded production, three new, low-resistance ventilation design alternatives were analyzed. The study determined that adequate ventilation for expanded [...]
PB Energy Storage Services, Inc. Developed detailed ventilation simulations using VnetPC2007 for the construction progress on a weekly basis. Simulations were used for decision making in the design stage for consideration of ventilation control device sequencing and management of air quality and quantity.
BRS/Uranium One, Inc. AAI performed a series of mine ventilation analyses to facilitate the proposed mine operating in compliance with applicable air quality regulatory standards. Particular emphasis in the design was placed on the main fan and raise locations that should, with appropriate controls, enable the mine to meet applicable Mine Safety Health and Administration [...]
AAI conducted the mining section of a technical audit of the Apatit phosphorite mining operations located at Kirovsk and Apatity, Kola Peninsula, Russia. The objective of the study was the assessment of the technical status and capabilities of the underground and open pit mining operations providing feed to concentrating and chemical processing facilities. The mines [...]
