TRI Pollution Prevention Report for D R DIEDRICH & CO LTD and Hydrogen sulfide

Facility ID: 53233GBHRD2615W

Facility Name and Address:
D R DIEDRICH & CO LTD
2615 W GREVES ST
MILWAUKEE, WI 53233

Parent Company:

Industry: Leather and Hide Tanning and Finishing (316110)
Chemical: Hydrogen sulfide

Production Related Waste Management for Selected Chemical

lchemid=0007783064

Waste Management Comparison - 2017

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*
2022	Source Reduction:: S03: Substituted raw materials, feedstock, or reactant chemical[-5-14%]	Methods to Identify SR Opportunities: T11: Other Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T10: Vendor assistance	S03: Reduce materials that generate H2S Source Reduction - Carry out audits and monitoring Source Reduction - Source Alternative chemistries - Potential use of Enzymes Source Reduction - Work with suppliers to eliminate the use of chemistries
2021	Source Reduction:: S03: Substituted raw materials, feedstock, or reactant chemical	Methods to Identify SR Opportunities: T10: Vendor assistance Methods to Identify SR Opportunities: T01: Internal pollution prevention opportunity audit(s) Methods to Identify SR Opportunities: T05: Employee recommendation (independent of a formal company program) Barriers: B8-Barriers to P2 B8 - A reduction does not appear to be technically feasible Barriers: B7-Barriers to P2 B7 - No known substitutes or alternative technologies.	S03: Reduced use of materials in process that generate H2S. Investigating enzyme un-hairing process Source Reduction - DRD listen to our employees, they see trends in our processes and if they see waste, we react to recommendations and investigate potential solutions Source Reduction - DRD are a member of the Leather Working group and work closely with our customers to eliminate the use of harmful chemicals Source Reduction - DRD work with external contractors to eliminate use of harmful chemicals Barriers to P2: B8 - A reduction does not appear to be technically feasible - Reduction is not always a feasible option Barriers to P2: B7 - No known substitutes or alternative technologies. - Alternative chemistries are difficult to find
2018			Other Environmental Practices: General Environmental Management - D R Diedrich & Co Limited are LWG certified and monitor H2S generation in process on a continuous basis
2017			Other Environmental Practices: General Environmental Management - DRD have formal environmental management system in place. DRD work closely with the Leather Working Group to maintain environmental performance
2014			Source Reduction: Source Reduction - Avoid mixing effluents containing sulfide with low PH effluent that may generate H2S, replacing oxidation tanks to oxidize S-2 to S+4
2013	Source Reduction:: W52: Modified equipment, layout, or piping Source Reduction:: W58: Other process modifications	Methods to Identify SR Opportunities: T11: Other Methods to Identify SR Opportunities: T11: Other
2012	Source Reduction:: W52: Modified equipment, layout, or piping Source Reduction:: W58: Other process modifications	Methods to Identify SR Opportunities: T11: Other Methods to Identify SR Opportunities: T11: Other

*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.