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RCRA Issues in the Demolition of a Copper Mine & Smelter
•James Glasston, Environmental Coordinator•Juanita Hyde, HSEC and Risk Specialist
History• 1944 Magma Copper Company purchases San Manuel claims and begins
exploration.• 1948 Underground exploration and development of San Manuel orebody
begins.• 1985 Development begins of Open Pit and Heap Leach facility at San
Manuel.• 1987 In-situ leaching production starts. Development of Kalamazoo orebody
begins.• 1996 Merger forms BHP Copper.• 1999 Facility goes into Care and Maintenance• 2003 BHP announces closure. • 2006 Reclamation of Mine was completed.
Mine & Plant SiteCopper production operations included• An underground mine,• An Open Pit,• A Heap Leach facility,• In-situ leach mine in the Open Pit,• Solvent Extraction-Electrowinning (SW-EW) Plant and• Two limestone/quartz quarriesThe facilities at the plant site included• A 7 mile long rail line,• A smelter• Concentrator with associated thickeners,• Crushers• Maintenance FacilitiesThe Tailings Facilities included seven tailings dams covering 3,300 acres, a result of
over 50 years of mining.
San Manuel Mine Site
Tailings
Open Pit
Shafts
Heap
SXEW
Community Of Mammoth
Community Of San Manuel
Reclamation of Mine Site
San Manuel Plant Site
Mill
Smelter
TailingsMine
Rod Plant
Refinery
Plant Site During Demolition
Plant Site Reclamation
Schedule & Budget• Unknown Waste Types and
Volumes• Conflicting Schedule
Expectations• Unknown regulatory
requirements• Project Example – PCB Soils
Resourcing• Internal
– Example – HSEC Department prior to project start-up
• External– Example - Contracting Waste
Broker
Contractor Management• Contract Preparation• Competency• HSE Culture• Ownership• Example – RCRA Training
NOV
Stakeholder Interface• Corporate• Regulatory
– Example – Coordination meeting with agency on characterization of buildings as waste
• Contractors• Community
– Example – Stack Abatement and Demolition
– APP Public Hearing
Pre-Demolition HSE Surveys• Multi-disciplinary Team
approach• Initial Survey• Follow-up Survey• Sampling
Sampling• Access• QA / QC• Turnaround times
Material Characterization• Reclaimable• On-site disposal• Off-site disposal• Example – Flue Dust, Scrap
Steel, Explosives
Remediation• Man-power• Equipment• Containers• Profiling• Transportation• Disposal
• Example – Vanadium Pentoxide Catalyst
Regulated Waste Summary
41,073 tons1369Asbestos6,713 gallons2Asbestos Wastewater14,205,960 lbs = 521 tons329PCB Soil61,864 lbs = 31 tons119PCB Ballasts, Switches & Caps606,500 lbs = 303.3 tons31Transformers (PCB, non PCB)1,884,000 lbs = 942 tons53Vanadium Pentoxide4,452,000 lbs = 2226 tons125Refractory Brick1,470,000 lbs = 735 tons63RCRA Debris 85 drums2Cyanide Salts / Pipe 860 drums24Lab Pack Projects118, 750 gallons142Dielectric fluid (PCB, non PCB)52,700 lbs = 26.4 tons4Explosives18, 645 bulbs13Fluorescent Bulbs613, 281 lbs = 307 tons26Mixed BatteriesTotal Weight# LoadsWaste Name
Documentation• Photo• Written• Reporting
Reclamation Project Achievements• Working transparently with Regulatory Agencies throughout
Reclamation to obtain permitting• Tours• The transportation and disposal of approximately 20 million pounds
of regulated waste from the property with no associated incidents• Successful reclamation of flue dust / concentrate blend
– BHP HSEC Merit Award– Generated $545,193– Recycled 6,058 tons
• Project will be completed on-time and under budget• The Reclamation project preserved the property for future use.
Credits