Site Preparation

Ridgeway Gold Mine

600

acres of re-spread topsoil and stabilization

2M

cubic yards earthwork to complete reclamation

1.5M

cubic yards of embankment construction

Ridgeway, SC

KRMC constructed and operated the largest precious metal (gold & silver) mining operation east of the Mississippi. Morgan Corp. was instrumental in the initial development, ongoing operations, and final reclamation of the facility.

In 1987 Morgan Corp. was contracted for the initial site preparation work which included over 1.5 million cubic yards of embankment construction required for the 250 acre Tailings Impoundment. This impoundment is covered with an impermeable clay liner and 60 mil HDPE synthetic liner. Subsequent to the initial phase of construction, Morgan Corp. contracted directly with KRMC for Phases 2, 3, 3A, and Phase 4 projects which incrementally raised the elevation of the impoundment from Phase 1 elevation of 470 to the final, Phase 4 elevation of 560. This increase required in excess of 24 million cubic yards of embankment material, of which Morgan Corp. placed approximately 10 million. The impoundment presently encompasses over 365 acres of area, is approximately 14,000 feet in length, with a maximum height of 190 feet.

In October of 1999, KRMC contracted with Morgan Corp. for final reclamation of the facility after the conclusion of active mining operations. This work included the hauling, placement, and compaction of over 1 million cubic yards of inert armor material for the 365 acre impoundment. It also included the construction of passive wetlands and a one-mile water conveyance channel connecting the North and South Pits. The total earthwork volume required to complete this reclamation project was approximately 2 million cubic yards. Additionally we re-spread topsoil and permanently stabilized 600 acres of disturbed area, placed 11,000 tons of Rip Rap, 71,000 square feet of AB matting, and established the final contours on the two 180 acre mine pits.

Twelve Mile Creek Restoration Project

12

acre disposal facility cap and closure

Pickens County, SC

Access road construction, management of dredged sediment materials within the new disposal unit, dewatering, final cap and closure of disposal facility (+/-12 acres) site and streambed restoration.

Grant Clarendon OSB Plant

850k

cubic yards of excavation

200

acre site development

150k

tons of base stone placed

Alcolu, SC

This was a 200-Acre Site Development for a new OSB Manufacturing Facility. Morgan Corp., with the assistance of subcontractors, installed a 4-stage dewatering system to perform a 45-foot excavation, of which 40 feet were below the ground water table.

This project involved a total of 850,000 cubic yards of excavation. Morgan Corp. placed 150,000 tons of base stone, 8,000 linear feet of storm drainage (18”-42”), and 60,000 linear feet of silt fence. 16,000 linear feet of waterline (4”-16”) were installed. Installation of an on-site septic system included 2,000 linear feet of sanitary sewer lines, along with three lift stations. Morgan Corp.’s sub grade treatment utilized 35,000 square yards of soil cement.

Notable Achievements

Morgan Corp. was able to complete this project, which was contracted for nine months, in less than eight months.

Seminole Road Landfill, Phase 3, Unit 1

1.8M

cubic yards of earthwork

5k

linear feet of leachate piping

40k

cubic yards of minus 5 clay liner

3k

linear feet of geogrid reinfoced earth slope

Decatur, GA

This project entailed the construction of a new 40-acre Subtitle “D” landfill cell with a double 60-mil HDPE liner system.

Morgan Corp. placed two geocomposite layers and storm water tarp (200 overall acres of geosynthetics), 5,000 linear feet of leachate piping, and a 250,000 gallon leachate storage tank. Approximately 1,800,000 cubic yards were excavated, of which 176,000 cubic yards were mass rock, which was drilled and shot. Our workers also installed 40,000 cubic yards of minus 5 clay liner, 225,000 tons of protective cover sand, and a unique requirement: 3,000 linear feet of geogrid reinforced earth slope (60-80 feet in height). Morgan Corp. addressed a number of infrastructure improvements on this job and handled the clearing and erosion control of 250 acres.

Of Note

This project had significant overruns of rock excavation. In addition, Morgan Corp. received several million dollars of change orders resulting from an increase in scope. Despite these challenges, the project came in on schedule.