Zinc and Nickel In Industrial Stormwater - Key Zinc Sources At Industrial Facilities

Many facilities are required under their industrial stormwater permit to monitor metal concentrations. Two of the most common metals detected are zinc and nickel.
Considering zinc, work conducted by the State of Washington found the major sources of zinc were galvanized materials, particularly on roof surfaces, as well as motor oil and hydraulic fluid accumulated on parking areas, loading docks, and paved grounds. Tire dust in areas with high volumes of trucks and forklifts may also be an important source. Zinc concentrations in runoff from roofs with galvanized ductwork were about 10-fold greater than found from the roofs without galvanized materials.

Both motor oil and hydraulic fluid contain high concentrations of zinc, about 0.1% by weight. As an example, just ½ cup of motor oil spilled on a small paved parking lot could result in 250 µg/L of zinc in runoff during a small rain event.

Link to a technical analysis of stormwater benchmarks compared to historical industrial sector monitoring data

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training. For further information contact Caltha LLP at info@calthacompany.com or Caltha LLP Website

Are Municiapally Owned Industrial Facilities Exempt From Storm Water Rules?

From time-to-time this question is asked; much of the confusion on this relates to the Intermodal Surface Transportation Efficiency Act.




Municipally owned and operated industrial sources that had been exempted by the Intermodal Surface Transportation Efficiency Act of 1991 were no longer exempt from permitting requirements after the Phase II Stormwater regulations came into effect. Provisions within Intermodal Surface Transportation Efficiency Act temporarily delayed the deadline for Phase I sources (industrial activities with the exception of power plants, airports, and uncontrolled sanitary landfills) operated by municipalities with populations of less than 100,000 people to obtain an NPDES Stormwater discharge permit. Congress delayed the permitting deadline for these facilities to allow small municipalities additional time to comply with NPDES requirements. The Phase II Final Rule ended this temporary exemption from permitting. Since March 10, 2003, all Intermodal Surface Transportation Efficiency Act-exempted municipally operated industrial activities were required to obtain permit coverage.

 



Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training. For further information contact Caltha LLP at
info@calthacompany.com or Caltha LLP Website

Revised Wisconsin DNR Tier 2 Industrial Permit

The Wisconsin Department of Natural Resources (WDNR) has release the revised Tier 2 permit under Chapter NR 216, Subchapter II — Industrial Storm Water Discharge Permits.  The revised permit became effective on June 1, 2016 and expires on May 31, 2021.




Caltha LLP has been providing technical services to facilities located in Wisconsin to bring them into compliance with the revised permit. Click here to review an example project to prepare a revised SWPPP and permit compliance documentation to meet Tier 2 permit


Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training. For further information contact Caltha LLP at
info@calthacompany.com or Caltha LLP Website

Webinar-based SWPPP Training to Meet State Permit Requirements and Facility Specific Programs

Caltha LLP offers facilities nationwide webinar based SWPPP Training meeting their individual permit requirements. Each training is customized for the facility and includes elements of the facility's unique Stormwater Pollution Prevention Plan (SWPPP).


Training is conducted in real-time and provides two-way interaction between the trainer and the trainees. Training sessions can be recorded and replayed for other shifts.


Click here to see an excerpt from a typical training session (no audio)





Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training. For further information contact Caltha LLP at
info@calthacompany.com or Caltha LLP Website