Project Management

Our managers and engineers have successfully managed projects requiring a single engineer or geologist to those requiring large, multi-disciplinary teams concerned with all major phases of mine development and operations. Our project management approach contains four distinct steps:

Problem assessment
Development of alternative solutions
Selection of appropriate solution based on effectiveness and costs
Monitoring of results

Project Name	Project Location	Client / Division
AML Projects 16-C Uranium Reclamation	Gas Hills Fremont County, Wyoming	Wyoming Department of Environmental Quality; Land Quality Division
David H. Scriven was project manager for the reclamation of the North Rex and Utah Pits and the Rox, Thunderbird and Atlas-Peach Underground uranium mines. He was responsible for subsurface geotechnical investigations, reclamation designs and bid document preparation. He coordinated the work of several sub-consultants performing ground and surface water studies, geomorphologic investigations, wildlife and plant studies, radiometric surveys and revegetation designs.

Project Name	Project Location	Client / Division
Riley Pass Reclamation Project	Hardin County, South Dakota	Custer National Forest
David H. Scriven was project manager for the investigation and design for the reclamation of the Riley Pass Uranium Mine, Hardin County, South Dakota. He managed a team of soil scientists, geomorphologists, biologists and health physicists to develop design alternatives for the project. The Riley Pass Mine was a surface mine, circa late 1950's, mining uranium associated with a thin coal seam overlying the rimrock. Spoil material was pushed over the rimrock creating an unstable and highly erosive surface. Several highwalls were left standing and ponded areas were created in the spoil piles. The project included the development of several reclamation alternatives. The alternatives were presented to the client to determine the one most suitable to their needs. Final design and bid documents were then prepared for the reclamation.

Project Name	Project Location	Client / Division
Pond 4 Rehabilitation	Sweetwater County, Wyoming	General Chemical Corporation
David H. Scriven was project manager for the rehabilitation of the Pond 4 embankments. The embankments were severely eroded from wave and wind action. The assignment included determining the physical characteristics of the fill material and measuring compaction of replaced fill. Construction management also included making major design changes for the upstream slope protection.

Project Name	Project Location	Client / Division
Pond 5 Enlargement	Sweetwater County, Wyoming	General Chemical Corporation
David H. Scriven was project manager for the design modification, permitting and construction for the enlargement of Pond 5. The design modifications included designing a chimney drain, realignment of the embankment, design of spillway and upstream slope protection. Permitting included State Engineer's Permit, and construction permits for the Wyoming Department of Environmental Quality, Water Quality Division. Construction management included all construction surveying, compaction testing, construction review, and development of as-built drawings.

Project Name	Project Location	Client / Division
Solid Waste Disposal Cell D	Sweetwater County, Wyoming	Modification General Chemical Corporation
David H. Scriven was project manager and project engineer for modification of the Tailings Disposal Cell D Reservoir. The modification project included several phases of construction of a retrofit on an existing tailings disposal facility using upstream and downstream construction methods. The assignment included design, permitting and construction management for the project. Permitting included application for the State Engineer's Permit and Construction Permit from the Water Quality Division, Wyoming Department of Environmental Quality. The first phase of this project was completed in 1990, a second phase in 1992, a third phase in 1996. The fourth phase is scheduled for 2000 and the final phase is scheduled for 2004. The designs include a rotating multi-point discharge to facilitate the use of sub-aerial deposition and the design of decant structures.

Project Name	Project Location	Client / Division
Glenrock Subsidencse Control Project 8A	Converse County, Wyoming	Wyoming Department of Environmental Quality Land Quality Division
The Town of Glenrock is underlain by two abandoned underground coal mines which are causing subsidence events on the surface. This project included a report of investigation to determine the most cost-effective approach to subsidence control, the design of a slurry backfill system to pump a sand/water mixture into the mine voids through boreholes, the generation of bid documentation and construction specifications and the construction management of the project for the State of Wyoming. Notable requirements of the project included design of a 3,000 gpm, 4,000 foot long slurry and water pipe line system; design of a 5,000 gpm water supply well field; design of a 200 foot span pipe bridge; roadway, sedimentation pond and drainage control designs and grouting designs for structures and a 1,000 foot unstable segment of a state highway. David H. Scriven was part of the construction management team for this project.

Project Name	Project Location	Client / Division
Northside Mine Subsidence Study	Gallup, New Mexico	Alan K. Kuhn, Consultant and Abandoned Mine Land Bureau State of New Mexico
David H. Scriven was the subsidence investigation specialist on the A.K. Kuhn team for the Northside Mine Subsidence Study in Gallup, New Mexico. His assignments included interviews/workshops with citizens; assistance to the State in locating subsurface investigation boreholes; assistance in structure investigations; drilling supervision and borehole logging; data analysis to define subsidence risk areas and subsidence mechanisms; evaluations of remedial actions.

Project Name	Project Location	Client / Division
Design and Construction Seepage Interceptor Trench	Green Riven, Wyoming	Tenneco Company
WSMC provided investigation, design engineering, construction management as well as being general contractor for the construction of a 2000 by 17 feet deep interceptor trench to collect seepage from an adjacent evaporation pond. The trench was designed using HDPE slotted pipe, gravel and geosynthetic filter fabric installed to a depth deep enough to be keyed into low permeable bed rock. The trench was tied into an existing sump which was rehabilitated in the project.

Project Name	Project Location	Client / Division
Shaft Grouting Ventilation Shaft 4	Green River, Wyoming	General Chemical Corporation
WSMC provided design and construction management for the grouting of Shaft 4 to eliminate groundwater seepage into the ventilation shaft. The shaft had a requirement to be nearly dry to prevent ice from building up on the shaft liner and also to prevent decahydrate forming stalactites on the shaft liner. Both the ice and decahydrate formations could create a safety hazard in the mine below. The grout design for this project was a low viscosity, two part chemical grout capable of sealing relatively tight sandstones. Initial flow into the shaft was measured at approximately two gallons per minute and after grouting was measured at approximately 18 ounces per minute. Upon opening up the shaft and allowing full air flow, the shaft was completely dry.

Project Name	Project Location	Client / Division
Due Diligence Environmental Invesstigation	Casper, Wyoming	Malapai Resources
David H. Scriven was the project manager for the due diligence environmental investigation at the Iragaray and Christensen Ranch in-situ uranium sites and the Willow Creek research and development site. The investigation was completed prior to the sale of Malapai Resources to Total. The project included complete testing and environmental assessment of all plants, ponds and leach fields. Staff included wide variety of engineering and scientific disciplines to cover all aspects of the environmental assessment of the site including health physicists, biologists, hydrologists, soil scientists and environmental engineers.