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How are “benchmark values” in my NPDES permit different than “permit limits”?

by Caltha Company | Nov 14, 2012 | FAQ, Stormwater, Water

Benchmark values differ from permit limits. In a typical wastewater NPDES permit, limits may be specified for chemical parameters; if any of the limits are exceeded, it becomes a violation of the permit and may be subject to enforcement action. Benchmark values, in...

What Is The Difference Between Aquatic Life Benchmarks and Water Quality Criteria?

by Caltha Company | Nov 14, 2012 | FAQ, Water

Two Offices within US EPA derive “standards” for pesticides to protect aquatic life. However, the methods used to derive these “standards” are quite different, as are the intended uses for the information. Aquatic life benchmarks are derived by Office of Pesticide...

Consulting and Permitting Support To Iowa Wastewater Dischargers – NPDES Expert

by Caltha Company | Nov 5, 2012 | Caltha LLP Services, Industrial Wastewater, Water

Caltha LLP provides expert consulting and permitting support to wastewater dischargers in Iowa. Under Federal and Iowa laws, all discharges of wastewater to the waters of the State require an NPDES permit issued by the Iowa Department of Natural Resources (IDNR)....

Public Meetings On Proposed Changes To Use Designations For Iowa Rivers

by Caltha Company | Nov 2, 2012 | Water

The Iowa Department of Natural Resources (DNR) is holding public meetings across the state to gather input on proposed water quality standards designated use changes for selected rivers and streams in Iowa. These changes are intended to enhance the protection of...

Discharges To Impaired Waters and Outstanding Arizona Waters Under Proposed Construction General Permit

by Caltha Company | Oct 31, 2012 | Stormwater, Water

The Arizona Department of Environmental Quality (ADEQ) has released a draft  Construction General Permit (AZG2008-001). This permit replaces the previous construction general permit that was issued for a five-year term by ADEQ in February 2003. As written, this...

Wisconsin General Permit For Projects Impacting Wetlands

by Caltha Company | Oct 31, 2012 | Water

The Wisconsin Department of Natural Resources has released a general permit that streamlines and shortens the wetland permitting process for some residential, commercial and industrial projects impacting wetlands. The statewide general permit (“GP”) is required under...
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