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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...

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...

What is the Difference Between a SPCC Plan, SWPPP Plan and PPC Plan?

by Caltha Company | Oct 26, 2012 | FAQ, Spill Prevention, Stormwater, Water

Some municipal and industrial sites may be required to prepare and implement either a SPCC Plan, a SWPPP Plan, or both.  Facilities located in Pennsylvania might also need to prepare and implement a PPC Plan. SPCC Plans, SWPPP Plans and PPC Plans are different...

Application of Minnesota Nondegradation – Antidegradation Policy To Stormwater Discharges

by Caltha Company | Oct 24, 2012 | Stormwater, Water

The 1972 Clean Water Act required States to develop and implement an antidegradation policy that sets thresholds beyond which additional evaluations of potential water quality impacts are required to obtain a discharge permit and sets additional control requirements....

Summary of Proposed California Industrial General Permit IGP 2012

by Caltha Company | Oct 22, 2012 | Stormwater, Water

In July 16, 2012, the California State Water Resources Control Board (State Water Board) published its third draft of its proposed “General Permit For Storm Water Discharges Associated With Industrial Activities, NPDES No. CAS000001” or “IGP”. This permit covers...

Iowa Storm Water Expert – Iowa Industrial Stormwater Consultant

by Caltha, LLP | Oct 20, 2012 | Caltha LLP Services, Stormwater, Water

Caltha LLP maintains a library of SWPPP Templates developed to meet the requirements of individual States, including Iowa. Separate stormwater plan templates are provided to Industrial, Municipal (MS4) and Construction stormwater dischargers. Our Iowa SWPPP templates...
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