TRI Pollution Prevention Report for GENERAL DYNAMICS (NASSCO) and Xylene (mixed isomers)

Facility ID: 92138NTNLSHARBO

Facility Name and Address:
GENERAL DYNAMICS (NASSCO)
2798 HARBOR DR
SAN DIEGO, CA 92113

Parent Company: GENERAL DYNAMICS CORP

Industry: Ship Building and Repairing (336611)
Chemical: Xylene (mixed isomers)

Production Related Waste Management for Selected Chemical

lchemid=0001330207

Waste Management Comparison - 2016

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*
2016	Source Reduction:: W58: Other process modifications[-0-4%]	Methods to Identify SR Opportunities: T11: Other	W58: There are continuous practices in place to increase efficiency and minimize waste.
2013	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T04: Participative team management
2012	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T04: Participative team management	W13: Improved procedures ensure proper operation of paint cells and associated treatment. Also, proper scheduling and procedures have increased recycling efforts. Source Reduction - The Environmental Department works with the paint department and other involved parties to ensure paint cells are operating correctly and in compliance with the permits. Other Environmental Practices - This chemical is a main component of paints. The source is a function of work-load. The primary emphasis is on minimizing emissions through treatment and recycling efforts.
2010	Source Reduction:: W35: Installed vapor recovery systems	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T10: Vendor assistance
2009	Source Reduction:: W35: Installed vapor recovery systems	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T10: Vendor assistance	Source Reduction - Vapor Recovery was installed in conjunction with Vapor Destruction Units in Paint Cells.
2007	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W36: Implemented inspection or monitoring program of potential spill or leak sources	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s)
2006	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W36: Implemented inspection or monitoring program of potential spill or leak sources	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s)
2005	Source Reduction:: W72: Modified spray systems or equipment Source Reduction:: W74: Improved application techniques	Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T04: Participative team management	Source Reduction - The following improvements have been implemented at nassco: 1) plural component paint application equipment 2) rag recycling program 3) solvent still recycling process 4) on-Site treatment /Incineration at primer line
2003	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T04: Participative team management
2002	Source Reduction:: W32: Improved procedures for loading, unloading, and transfer operations	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s)
2001	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s)
2000	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T04: Participative team management
1999	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W24: Instituted better labeling procedures Source Reduction:: W71: Other cleaning and degreasing modifications	Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T04: Participative team management
1998	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W24: Instituted better labeling procedures Source Reduction:: W71: Other cleaning and degreasing modifications	Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T04: Participative team management
1997	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W24: Instituted better labeling procedures Source Reduction:: W71: Other cleaning and degreasing modifications	Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T04: Participative team management
1996	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures Source Reduction:: W73: Substituted coating materials used	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T10: Vendor assistance Methods to Identify SR Opportunities: T04: Participative team management Methods to Identify SR Opportunities: T10: Vendor assistance
1995	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
1994	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
1993	Source Reduction:: W13: Improved maintenance scheduling, recordkeeping, or procedures	Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T03: Materials balance audits Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program)
1992	Source Reduction:: W81: Changed product specifications	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:

A breakdown of production-related waste managed. This includes all amounts of the chemical released directly to the environment or otherwise managed as waste, other than waste generated by one-time events not associated with normal production processes (e.g., fires or remedial actions).
A production ratio or activity index to provide context for reported toxic chemical quantities. For example, if a chemical is used in the manufacture of refrigerators, the production index would track the number of refrigerators produced and could be used to help gauge how much of the chemical is being released per unit of production.
Any newly implemented source reduction activities, reported using "W-codes" (e.g., "W41: Increased purity of raw materials")

Facilities may also provide optional Pollution Prevention Information describing their source reduction, recycling, or pollution control activities.