Monday, February 1, 2010

Asphalt & Lubricant Manufacturing Sector Stormwater Requirements - ADEQ

The Arizona Department of Environmental Quality (ADEQ) recently released an updated draft of its proposed multisector industrial stormwater discharge general permit, known officially as the AZPDES Multi-Sector General Permit, or MSGP 2010. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in 2005.

Review a summary of the ADEQ Industrial Stormwater Permit

The proposed permit details requirements for 30 different industrial sectors. The requirements described below are proposed for the Asphalt Paving and Roofing Materials and Lubricant Manufacturing Sector (Sector D). Sector D covers several facility types, including manufacturing asphalt paving mixtures blocks and roofing materials, portable asphalt plant facilities, and manufacturing lubricating oils and greases and miscellaneous products of petroleum and coal. These requirements are in addition to permit requirements that apply to all sectors.

Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. For benchmark monitoring, the benchmark concentrations or values depend on product type:

Permanent Asphalt Paving and Roofing Materials (SIC 2951, 2952):
TSS 100 mg/L

The permit also establishes EFFLUENT LIMITS for stormwater discharges from asphalt emulsions facilities

[What is the difference between a “bench mark” and a permit or effluent limit?]

[Read more about what a 100 mg/L benchmark for TSS relates to]

Looking for other sector information? Click here for information on proposed stormwater requirements for specific sector.

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
Caltha LLP Website

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