TRI Pollution Prevention Report for STEMCO LP and Zinc compounds

Facility ID: 75606STMCN300IN

Facility Name and Address:
STEMCO LP
300 INDUSTRIAL DR
LONGVIEW, TX 75602

Parent Company: ENPRO INDUSTRIES INC

Industry: Other Motor Vehicle Parts Manufacturing (336390)
Chemical: Zinc compounds

Production Related Waste Management for Selected Chemical


lchemid=N982
    Waste Management Comparison - 2019



Pollution Prevention Activities for Selected Chemical


Reporting Year Section 8.10: Newly Implemented Source Reduction Activity Section 8.10: Methods to Identify Activity Section 8.11: Optional Pollution Prevention Information*
2020 Barriers: B6-Barriers to P2 B6 - Pollution prevention previously implemented - additional reduction does not appear technically or economically feas

Barriers to P2: B6 - Pollution prevention previously implemented - additional reduction does not appear technically or economically feas - Automation implemented in 2019.

2019 Source Reduction:: W66: Modified or installed rinse systems[-5-14%]
Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
W66: The zinc rinse system has been updated with automated equipment, improving the overall effectiveness of the system.

Source Reduction - Employee recommended the upgrade which was successful.

Other Environmental Practices: Energy Recovery - Our cement waste and zinc phosphate waste containing zinc is sent to VLS recovery services that convert the waste into heat, electricity and fuel via combustion and gassification.

2018 Other Barriers to Source Reduction - No additional source reduction efforts were explored in 2018.

2015 Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures
Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
2014 Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures[-25-49%]
Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
2007 Source Reduction:: W51: Instituted recirculation within a process
Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
Source Reduction - In 2007 we added a filter press and began removing precipitated solids from the zinc phosphate tank. We reduced tank clean outs from 24 times per year to 2 times per year. Drums of waste zinc phosphate was reduced by 91 %. Purchases of fresh zinc phospahte was reduced by 41 %.
2004 Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures
Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s)
*Classifications of Optional Pollution Prevention Information shown in brackets are provided by EPA.


TRI Pollution Prevention Glossary

The Waste Management Hierarchy

The waste management hierarchy established by the Pollution Prevention Act (PPA) guides waste generators toward the best options for managing wastes. The preferred option is to prevent pollution at its source, but for waste that is generated, the preferred management methods are recycling, followed by burning for energy recovery, treatment and, as a last resort, disposing of the waste.
  • Source Reduction includes activities that eliminate or reduce the generation of chemical waste.
  • Recycling includes the recovery of a toxic chemical in waste for reuse.
  • Energy Recovery includes the combustion of toxic chemicals in waste to generate heat or electricity.
  • Treatment includes the destruction of a toxic chemical in waste.
  • Disposal or Other Releases includes toxic chemical quantities entering the environment.
The PPA requires facilities to provide the following details about each chemical they report to TRI:
Facilities may also provide optional Pollution Prevention Information describing their source reduction, recycling, or pollution control activities.