Rusha Service Mine

Project Description

Contract for the Restoration Works for the former coal mine included:

• Final profiling and trimming up of overburden to the landform required in the restoration plan;
• Dewatering and Infilling of water treatment areas; and
• Reshaping of former coal compound area.
• Excavation from storage mounds and depositing of Subsoils in designated areas as per the Restoration designs.
• Excavation from storage mounds and depositing of Topsoils in designated areas as per the Restoration and Landscape designs.
• Construction of a new permissive footpath/forest track.
• Formation of drainage ditches to control surface water run-off of the final restoration scheme.

In total moving in excess of 408,000m3 of material.

Topsoil Quantity moved and spread

• Subsoil volume = 215,830m³
• Topsoil volume = 103,720m³

Overburden Quantity moved and spread

• Area C void final regrading/profiling prior to replacement of subsoil, 12,000m³
• Area A lagoons infilling prior to replacement of subsoil, 7,800m³
• Area C lagoons infilling prior to replacement of subsoil, 6,500m³
• Workshop lagoons infilling prior to replacement of subsoil, 7,000m³
• Compound area final regrading/profiling prior to replacement of subsoil 55,400m³

Works required

Works required the dewatering and infilling of former treatment lagoons, by pumping and water treatment prior to discharge. The site operates under a CAR Licence issued by SEPA and water was only discharged from site via the approved discharge location adjacent to the water treatment lagoons. We utilised the expertise of Silt Buster to develop a bespoke treatment system to dose and treat the water prior to discharge. Significant Sampling, Testing and independent verification was undertaken to prove the treatment process meet SEPA requirements before approval to proceed with pumping the lagoons was given. Any water requiring to be pumped from the working areas was directed to the water treatment areas prior to being discharged.

Construction of 150mm deep hardcore, 3m wide by 1480m long Permissive footpath/forest track. It was finished off with 50mm of fines, compacted to provide a suitable surface.

Processed and placed circa 600m³ of arising’s from previously demolished concrete bridges on site as access road covering.