Minnesota Stormwater Permitting and Storm Water Management Seminar

MINNESOTA STORMWATER MANAGEMENT
Thursday, February 18, 2010 — Eagan, MN

This seminar is a practical, one-day program for engineers, architects, landscape architects and contractors to 1) Review federal and Minnesota laws and regulations regarding stormwater management, 2) Analyze stormwater management strategies using wet and dry detention facilities, 3) Examine green stormwater practices, and 4) Learn about maintaining wet and dry detention ponds


Seminar Agenda

Understanding Federal and State Rules on Stormwater Management
◗ Federal and state statutes and regulations
• National Pollutant Discharge Elimination System (NPDES) requirements
• Minnesota Pollution Control Agency stormwater management requirements
◗ Local requirements and procedures
◗ Permits and permitting process
◗ Special waters and impaired waters

Stormwater Management Using Wet and Dry Detention Facilities
◗ Detention/retention pond overview
◗ Advantages and disadvantages
◗ Design considerations
• Hydrology • Permitting
• Site selection • Water quality
• Pond sizing
• Safety considerations
• Outlet structures
• Good design practices
• Pond routing theory
• Interconnected ponds
◗ Steps for detention design

Green Stormwater Practices
◗ Bioretention basics
◗ Bioretention cells
◗ Cisterns
◗ Runnels
◗ Permeable pavers/pervious concrete
◗ Disconnecting impervious area/vegetated swales
◗ Soil amendments
◗ Sustainable landscaping
◗ Rainwater harvesting
◗ Green roofs

Maintaining Wet and Dry Detention Ponds
◗ Evaluating erosion
• Techniques for preventing and repairing erosion
◗ Evaluating water quality
• Managing sedimentation
• Managing turbidity and algae bloom
• Identifying and managing pollutants
◗ Maintaining outlets and trash racks
◗ Reviewing case studies



For more information or to register for this seminar, go to:
Minnesota Stormwater Seminar

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

Technical Guidance For EISA Section 438 Compliance

Under the new Section 438 of the Energy Independence and Security Act of 2007 (EISA), federal agencies have new requirements to reduce stormwater runoff from federal development and redevelopment projects to protect water resources. Federal agencies can comply using a variety of stormwater management practices often referred to as "green infrastructure" or "low impact development" practices, including for example, reducing impervious surfaces, using vegetative practices, porous pavements, cisterns and green roofs.

US EPA has recently issued guidance ("Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects under Section 438 of the Energy Independence and Security Act") to assist federal agencies in minimizing the impact of federal development projects on nearby water bodies. The guidance is being issued in response to a change in law and an Executive Order signed by President Obama, which calls upon all federal agencies to lead by example to address a wide range of environmental issues, including stormwater runoff.

The purpose of the guidance document is to provide technical guidance and background information to assist federal agencies in implementing EISA Section 438. Each agency or department is responsible for ensuring compliance with EISA Section 438. The document contains guidance on how compliance with Section 438 can be achieved, measured and evaluated.

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

EPA Extends 2008 Construction Stormwater Permit

US EPA has proposed to extend the 2-year term of the Agency’s July 2008 general permit for stormwater discharges from construction activities (CGP) by 1 year. According to EPA, the extension is needed to ensure Agency compliance with a court order requiring promulgation of effluent limitations guidelines (ELG) and new source performance standards (NSPS) for the construction and development (C&D) point source category.

The 2008 CGP provides coverage for discharges from construction sites in areas not addressed by an approved state national pollutant discharge elimination system (NPDES) program. EPA Regions 1, 2, 3, 5, 6, 7, 8, 9, and 10 issued the 2008 CGP to replace the expired 2003 CGP for operators of new and unpermitted ongoing construction projects. The current 2008 CGP expires on June 30, 2010.

EPA is proposing to extend coverage of the CGP to June 30, 2011. This would give EPA approximately the same time period—18 months—that the Agency required to issue the 2003 CGP. The 2008 CGP required 3 years to finalize.

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

Final SPCC Rule Amendments - 40 CFR 112

US EPA announced a final regulation that amends certain requirements for facilities subject to the Oil Spill Prevention, Control and Countermeasure (SPCC) rule. The amendments clarify regulatory requirements, tailor requirements to particular industry sectors, and streamline certain requirements for a facility owner or operator subject to the rule. With these changes, the agency expects to encourage greater compliance with the SPCC regulations, thus resulting in increased protection of human health and the environment. This rulemaking marks the completion of the SPCC action, which was proposed on October 15, 2007, finalized on December 5, 2008, and for which the agency requested public comments again on February 3, 2009.

The amendments do not remove any regulatory requirements for owners or operators of facilities in operation before August 16, 2002, to develop, implement and maintain an SPCC plan in accordance with the SPCC regulations then in effect. Such facilities continue to be required to maintain their plans during the interim until the applicable date for revising and implementing their plans under the new amendments.

SPCC Plans and 40 CFR 112 Compliance


Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), SPCC Plans and Spill Reporting Consulting, Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP atinfo@calthacompany.com
orCaltha LLP Website

Stormwater Surveys For Developers, Contractors, Cities and States

US EPA is proposing a survey in advance of rulemaking related to stormwater permits and permit requirements.

EPA plans to propose a rule to control stormwater from newly developed and redeveloped sites and to take final action no later than November 2012. In support of this rulemaking, EPA is proposing to require three different groups to complete questionnaires about current stormwater management practices:

• Owners, operators, developers, and contractors of newly and redeveloped sites;
• Owners and operators of municipal separate storm sewer systems; and
• States and territories.
  

The proposed survey will be open for public comment for 60 days following publication in the Federal Register.

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

Stormwater Discharges Become Priority Under CWA Enforcement Plan

Stormwater runoff from industrial, construction and urban lands is included as a priority under US EPA's recent Clean Water Act enforcement initiative.

EPA has announced that it is stepping up efforts on Clean Water Act enforcement. A plan "Clean Water Action Enforcement Plan" has been drafted as a first step in revamping the compliance and enforcement program. The plan outlines how EPA will strengthen the way it addresses modern water pollution challenges. These challenges include pollution caused by numerous, dispersed sources, such as concentrated animal feeding operations, sewer overflows, contaminated water that flows from industrial facilities, construction sites, and runoff from urban streets.

The agency intends to target enforcement toward the most significant pollution problems, improve transparency and accountability by providing the public with access to better data on the water quality in their communities, and strengthen enforcement performance at the state and federal levels. Elements of the plan include the following:

• Develop more comprehensive approaches to ensure enforcement is targeted to the most serious violations and the most significant sources of pollution.
• Work with states to ensure greater consistency throughout the country with respect to compliance and water quality.
• Ensure that states are issuing protective permits and taking enforcement to achieve compliance and remove economic incentives to violate the law
• Use modern information technology to collect, analyze, and use information in new, more efficient ways and to make that information readily accessible to the public.

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

New Airport Deicing Fluid Regulations - Requirement to Collect and Treat

U.S. Environmental Protection Agency has proposed regulations requiring airports to collect at least some of the deicing fluid after it is used on aircrafts with a goal of cutting chemical discharge by 22%. The regulations would require six of the 14 major U.S. airports that are the biggest users of deicing fluid to install deicing pads or other collection systems to capture 60% of fluid sprayed and to install deicing pads or other collection systems. Some of the targeted airports include:

• New York's John F. Kennedy and LaGuardia airports,
• Chicago's O'Hare,
• Boston Logan International,
• Cleveland-Hopkins International, and
• New Jersey's Newark Liberty International

It would then be the airports' responsibility to ensure that the collected fluid was treated and handled in accordance with requirements. Some 200 smaller facilities around the US would have to collect 20 percent of the fluid by using technologies such as a glycol recovery vehicle, while airports with fewer than 1,000 yearly jet departures would not be impacted.

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

Industrial Storm Water Permit - Extension of Public Comment Period

The Minnesota Pollution Control Agency (PCA) has extended the public comment period for the proposed Industrial Stormwater Discharge Permit. PCA issued its draft NPDES permit on July 6 and is accepting public comments through September 5, 2009.

For more information, go to:

Summary of Proposed Industrial Stormwater Permit

Summary of Industrial Sectors and Industrial Sector Requirements

Minnesota Industrial Stormwater Training Opportunities

Minnesota Industrial Stormwater Services Summary

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

Virginia DEQ Industrial SWPPP Template - Monitoring Plan Template

The Virginia Department of Environmental Quality (VDEQ) has issued its revised Multi-sector Industrial Stormwater Permit, which became effective on July 1, 2009. The reissued permit includes a number of compliance requirements that are new to many Virginia industries, including:

• Increased training requirements


• Increased inspection requirements


• Stormwater benchmark monitoring

[Read more about changes to DEQ benchmark monitoring requirements]

Existing facilities that were previously covered under the VDEQ industrial permit are required to come into compliance with the reissued permit by October 1, 2009. New facilities are required to be in compliance with the industrial permit when they submit their permit application (Notice of Intent, or NOI).

Caltha LLP has recently completed a stormwater pollution prevention plan (SWPPP) template, Compliance Plan template, and Stormwater Monitoring Plan template specifically constructed to meet the requirements of the new VDEQ stormwater permit. For more information on how these templates can reduce the time and cost for permit compliance, contact Caltha LLP by email at Virginia SWPPP Template

Looking for SWPPP Compliance templates for a different State? Click here

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

Virginia VDEQ Stormwater Benchmarks - Changes To Sector Requirements

The Virginia Department of Environmental Quality (DEQ) revised general permit for industrial stormwater discharges became effective on July 1, 2009. The revised permit changed the compliance requirements for many industrial sectors that are subject to the industrial storm water regulations.

Existing facilities that were previous covered under the VDEQ industrial permit are required to come into compliance with the reissued permit by October 1, 2009.

The reissued permit amended some of the requirements for benchmark monitoring, including adding some new industrial sectors that in the past had not been required to conduct benchmark (chemical) monitoring of their stormwater discharges. The amended permit also added to the number of chemical parameters some sectors need to sample for.

Newly Added industrial Sectors that require benchmark monitoring

Sector P Land Transportation and Warehousing
Sector U Dairy Products Facilities
Sector R Ship and Boat Building or Repairing Yards

Industrial Sectors with Expanded Benchmark Monitoring Requirements

Sector N - Ship Dismantling, Marine Salvaging and Marine Wrecking Facilities
Sector S - Airports

The revised permit clarified that benchmark monitoring needs be performed at least once during at least the first two, and potentially all monitoring periods, unless the facility qualifies for a waiver. Benchmark monitoring waiver requests will be evaluated by DEQ based upon (1) benchmark monitoring results below the applicable benchmark concentration values; (2) a favorable compliance history (including inspection results); and (3) no outstanding enforcement actions. The benchmark monitoring waivers can be revoked by DEQ for cause. The revised general storm water permit also clarified that for inactive and unstaffed sites must have no industrial materials or activities exposed to storm water to qualify for this waiver

Caltha LLP has recently completed a stormwater pollution prevention plan (SWPPP) template, Stormwater Monitoring Plan template and Compliance Plan template specifically constructed to meet the requirements of the new VDEQ stormwater permit. For more information on how these templates can reduce the time and cost for permit compliance, contact Caltha LLP by email at Virginia SWPPP Template

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

Arkansas - ADEQ Industrial Stormwater Permit - SWPPP Template

The Arkansas Department of Environmental Quality (ADEQ) has issued its revised Multi-sector Industrial Stormwater Permit, which became effective on July 1, 2009. The reissued permit includes a number of compliance requirements that are new to many Arkansas industries, including:

• Increased training requirements
• Increased inspection requirements
• Stormwater benchmark monitoring

Caltha LLP has recently completed a stormwater pollution prevention plan (SWPPP) template and Compliance Plan template specifically constructed to meet the requirements of the new ADEQ stormwater permit. For more information on how these templates can reduce the time and cost for permit compliance, contact Caltha LLP by email at Arkansas SWPPP Template

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

Air Transportation Facilities - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Air Transportation Facilities Sector (Sector S). Sector S facilities include only those portions of the site that are engaged in servicing, repairing, or maintaining aircraft and ground vehicles, equipment cleaning and maintenance, or deicing/anti-icing operations.. These requirements are in addition to permit requirements that apply to all sectors.

Employee Training:
In addition to other training requirements, employee training programs need to include training:
1. Proper handling of deicing materials and fuels.
2. Spill and leak prevention.
3. Proper recordkeeping of deicing fluids applied and stored.

[Read more about Minnesota stormwater training]

Good Housekeeping:
For agricultural aviation operations occur, the facility must prevent contact of stormwater with pesticides, herbicides, and other agricultural chemicals.

Inspections:
In addition to the routine inspection requirements, facilities must conduct two inspections per month during the deicing season. Operations must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

Preventive Maintenance:
All facilities must evaluate whether over application of deicing chemicals on runways occurs by analyzing and adjusting application rates as necessary, consistent with considerations and requirements of flight safety The site SWPPP must include measures to prevent or minimize contamination of stormwater from all areas used for aircraft, ground vehicle and equipment maintenance, and must store all aircraft, ground vehicles and equipment awaiting maintenance in designated areas only.

Leaks & Spills:
Each individual permittee is required to report spills equal to or exceeding the reportable quantity (RQ) levels. If an airport authority is the sole permittee under the permit, then the sum of all spills at the airport must be assessed against the RQ. If tenants exist at the airport, then the amount spilled by each tenant shall be assessed against the RQ determination.

Potential Pollutant Sources:
The site SWPPP must also describe potential pollutant sources including aircraft, runways, ground vehicle and equipment maintenance and cleaning, aircraft and runway deicing operations, runways and loading areas where agricultural aviation operations occur.

Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. The benchmark concentrations are based on deicing chemical usage:

>100,000 gallons of glycol-based deicing/anti-icing chemicals and/or >100 tons of urea on an average annual basis:
BOD 25 mg/L
COD 120 mg/L
Total Ammonia 2.8 mg/L
pH 6-9

Less than 100,000 gallons
BOD 25 mg/L
COD 120 mg/L
Total Ammonia 2.8 mg/L

Note: Benchmark for ammonia were derived based on the Aquatic Life Standards for these parameters in Minnesota Rules.

[Read more about use of Aquatic Life Standards to derive stormwater benchmarks]
[Read more about how benchmarks are used under the proposed MPCA industrial permit]


Looking for information on Minnesota SWPPP - Industrial Stormwater Training?, go to:
MPCA Industrial Stormwater Training - SWPPP Training - Stormwater Inspection Training


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

Leather Tanning and Finishing Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Leather Tanning and Finishing (Sector Z). Sector Z facilities are engaged in leather tanning, currying, and finishing activities. These requirements are in addition to permit requirements that apply to all sectors.

Preventive Maintenance:
The site SWPPP must include measures to store pallets and bales of raw, semi-processed, or finished tannery by-products indoors or these materials must be protected by polyethylene wrapping, tarpaulins, or roofed storage; to the extent feasible, the facility must store materials on impermeable surfaces and enclose or put berms around these areas. The operations must also prevent or contamination of stormwater runoff with leather dust from buffing and shaving areas, and must use dust collection systems and assure that they are operating properly.

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

Leather Tanning and Finishing (SIC 3111):
TSS 100 mg/L
Chromium +3 3.5 mg/L
BOD 25 mg/L

Note: Benchmarks for chromium were derived based on the Aquatic Life Standards for these parameters in Minnesota Rules.

[Read more about use of Aquatic Life Standards to derive stormwater benchmarks]
[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Caltha LLP is conducting seminars in several cities across Minnesota to provide an overview of what the proposed MPCA permit requirements are and potential impacts on affected facilities. For more information, go to:
MPCA Proposed Industrial Stormwater Requirements Seminar

Looking for other sector information? Click here for a link to all sector requirements

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

Textile Mills, Apparel, and Other Fabric Products Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Textile Mills, Apparel, and Other Fabric Products Sector (Sector V). Sector V facilities are engaged in textile mill product preparation, the manufacture of apparel, fabrics, carpets and rugs, and leather products; dyeing and finishing of fibers, yarn fabrics, and knit. These requirements are in addition to permit requirements that apply to all sectors.

Inspections:
In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

Preventive Maintenance:
The site SWPPP must include use of spill and overflow protection; and covering or enclosing areas where the transfer of materials occurs. The SWPPP must also address the replacement or repair of leaking connections, valves, transfer lines, and pipes that carry chemicals, dyes, or wastewater.

Potential Pollutant Sources:
The site SWPPP must also describe potential pollutant sources including numerous specific listed processes and activities specific to this sector.


Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. The benchmark concentrations or values are:

TSS 100 mg/L

[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Caltha LLP is conducting seminars in several cities across Minnesota to provide an overview of what the proposed MPCA permit requirements are and potential impacts on affected facilities. For more information, go to:
MPCA Proposed Industrial Stormwater Requirements Seminar

Looking for other sector information? Click here for a link to all sector requirements

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

Ship and Boat Building and Repair Yards Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Ship and Boat Building and Repair Yards Sector (Sector R). Sector R facilities are engaged in a manufacturing of boats as well as boat repair operations These requirements are in addition to permit requirements that apply to all sectors.

Employee Training:
In addition to other training requirements, employee training programs need to include training:
1) used oil management,
2) spent solvent management,
3) disposal of spent abrasives,
4) fueling procedures,
5) painting and blasting procedures, and
6) used battery management.

Good Housekeeping:
The facility SWPPP must address measures to address housekeeping in yards and dry dock areas.

Inspections:
In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

Routine site inspections must include pressure washing area; blasting, sanding, and painting areas; engine maintenance and repair areas; drydock area; and general yard areas.

Preventive Maintenance:
The site SWPPP must include measures to prevent spent abrasives, paint chips, and overspray from coming into contact with stormwater. The operation must contain all blasting and painting activities, and must regularly clean deposits of abrasive blasting debris and paint chips. The SWPPP must describe measures to prevent or minimize the contamination of stormwater from all areas used for engine maintenance and repair

Potential Pollutant Sources:
The site SWPPP must also describe potential pollutant sources including outdoor manufacturing or processing activities, and significant dust or particulate generating processes.

Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. The benchmark concentrations or values are:

TSS 100 mg/L

[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Caltha LLP is conducting seminars in several cities across Minnesota to provide an overview of what the proposed MPCA permit requirements are and potential impacts on affected facilities. For more information, go to:
MPCA Proposed Industrial Stormwater Requirements Seminar

Looking for other sector information? Click here for a link to all sector requirements

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

Oil and Gas Extraction and Refining Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Oil and Gas Extraction and Refining Sector (Sector I). Sector I facilities are engaged in a extraction or refining of petroleum or natural gas, and related field services and drilling. These requirements are in addition to permit requirements that apply to all sectors.

Inspections:
In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

Routine site inspections must include equipment and vehicles that store, mix, or transport chemicals or hazardous materials.

Preventive Maintenance:
The site SWPPP must include measures to prevent or minimize contamination of stormwater from chemical mixing areas, and prevent discharge of stormwater coming into contact with wastewater pollutants from any sources associated with production, field exploration, drilling, well completion, or well treatment.

Potential Pollutant Sources:
The site SWPPP must also describe potential pollutant sources including chemical, cement, mud, or gel mixing activities; drilling or mining activities; and equipment rehabilitation activities.

Stormwater Infiltration:
Sector I facilities are prohibited from using infiltration to manage stormwater.

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:

Oil and Gas Extraction (SIC 1311, 1321, 1381-1389):
TSS 100 mg/L
pH 6-9

Oil Refining (SIC 2911):
Total Zinc 0.234 mg/L
Ammonia 34.8 mg/L

Note: Benchmarks for zinc and ammonia were derived based on the Aquatic Life Standards for these parameters in Minnesota Rules.

[Read more about use of Aquatic Life Standards to derive stormwater benchmarks]
[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Caltha LLP is conducting seminars in several cities across Minnesota to provide an overview of what the proposed MPCA permit requirements are and potential impacts on effected facilities. For more information, go to:
MPCA Proposed Industrial Stormwater Requirements Seminar

Looking for other sector information? Click here for a link to all sector requirements

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

Treatment Works (POTW) Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[[Read an overall summary of the proposed MPCA Industrial Stormwater Permit]]

Some key changes in the July 6, 2009 proposed permit are the additional details for 29 different sector specific requirements. The requirements described below are proposed for the Treatment Works Sector (Sector T). Sector T facilities are engaging in treating domestic sewage, or any other sewage sludge or wastewater treatment device or system used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage; including land dedicated to the disposal of sewage sludge; that are located within the confines of the facility with a design flow of 1.0 million gallons per day (MGD) or more; or are required to have an approved pretreatment program under 40 CFR Part 403. These requirements are in addition to permit requirements that apply to all sectors.

Employee Training:
In addition to other training requirements, employee training programs need to include training:
1) petroleum product management;
2) process chemical management;
3) fueling procedures; and
4) proper procedures for using fertilizer, herbicides, and pesticides.

Inspections:
Routine inspections must include:
1) access roads and rail lines;
2) grit, screenings, and other solids handling areas;
3) sludge drying beds;
4) dried sludge piles;
5) compost piles; and
6) septage or hauled waste receiving stations.

Potential Pollutant Sources:
The site SWPPP must also describe potential pollutant sources including solids handling areas; sludge drying areas; compost piles; septage or hauled waste receiving stations; and access roads and rail lines.

Stormwater Monitoring Benchmarks:
All facilities are required to conduct visual and chemical (benchmark) monitoring. The benchmark concentrations are:

TSS 100 mg/L
BOD 25 mg/L

[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Caltha LLP is conducting seminars in several cities across Minnesota to provide an overview of what the proposed MPCA permit requirements are and potential impacts on affected facilities. For more information, go to:
MPCA Proposed Industrial Stormwater Requirements Seminar

Looking for other sector information? Click here for a link to all sector requirements

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

Industrial Stormwater Seminars - MPCA Proposed Requirements

In July 6, 2009, the Minnesota Pollution Control Agency released its proposed Multi-sector General Permit (MSGP) for industrial stormwater discharges. This proposed permit represents a significant change to permit compliance requirements, including:
· Stormwater Pollution Prevention Plans / SWPPP
· Required Sector-specific Best Management Practices
· Sector-specific Stormwater Monitoring
· Sector-specific Stormwater Benchmarks
These requirements will impact a wide range of sectors, including most manufacturing and fabricating businesses, and other sectors such as transportation, warehousing, etc.

All facilities that fall within these sectors will be affected, regardless of size or number of employees. In all, MPCA has estimated that about 20,000 facilities in Minnesota will be subject to some or all stormwater requirements.

[Click here to read more about the draft MPCA MSGP for industrial stormwater discharge and sector requirements]

MPCA Stormwater Requirements Seminars

Caltha LLP will be conducting a series of seminars across Minnesota to provide basic information on the new MPCA requirements. These sessions will address issues such as:
· What will my sector be required to do?
· What might this cost?
· Could my facility be exempted?
· What could I be doing now to reduce the potential impact to my facility?

Sessions have been scheduled in the cities listed below. All sessions are scheduled from 8 am to 9:30 am. The cost is $20 (which will be invoiced after registration); pre-registration is required. Sessions are open to individuals from subject industrial sectors only. To register for a session in a specific location or to request further information, click where indicated below:

Click below to register or request info
St. Cloud........... July 14, 2009 Register or Request Info
Owatonna......... July 15, 2009 Register or Request Info
Minneapolis/St. Paul Metro...... July 16, 2009 Register or Request Info
Duluth............... July 21, 2009 Register or Request Info
Fergus Falls..... July 23, 2009 Register or Request Info


Looking for sessions in other areas? Caltha will be scheduling additional sessions in other Cities based on interest. If you would like to suggest a City, CLICK HERE.

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

Minnesota MPCA Proposed Stormwater Sector Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[Read a summary of overall MPCA Multisector Industrial Stormwater Permit]

Some key changes in the July 6, 2009 draft compared to the previous permit are the additional of sector-specific requirements for each of 29 different sectors. Click on a sector below to review proposed sector specific requirements:

MPCA SWPPP Requirements for Sector A - Timber Products
MPCA SWPPP Requirements for Sector B - Paper and Allied Products Manufacturing
MPCA SWPPP Requirements for Sector C - Chemical and Allied Products Manufacturing
MPCA SWPPP Requirements for Sector D - Asphalt Paving and Roofing Materials and Lubricant Manufacturing
MPCA SWPPP Requirements for Sector E - Glass, Clay, Cement, Concrete, and Gypsum Products
MPCA SWPPP Requirements for Sector F - Primary Metals
MPCA SWPPP Requirements for Sector G - Metal Mining
MPCA SWPPP Requirements for Sector H - Coal Mining
MPCA SWPPP Requirements for Sector I - Oil and Gas Extraction and Refining
MPCA SWPPP Requirements for Sector J - Mineral Mining
MPCA SWPPP Requirements for Sector K - Hazardous Waste Treatment, Storage, or Disposal Facilities
MPCA SWPPP Requirements for Sector L - Landfills, Land Application Sites, and Open Dumps
MPCA SWPPP Requirements for Sector M - Automobile Salvage Yards
MPCA SWPPP Requirements for Sector N - Scrap Recycling and Waste Recycling Facilities
MPCA SWPPP Requirements for Sector O - Steam Electric Generating Facilities
MPCA SWPPP Requirements for Sector P - Land Transportation and Warehousing
MPCA SWPPP Requirements for Sector Q - Water Transportation
MPCA SWPPP Requirements for Sector R - Ship and Boat Building and Repair Yards
MPCA SWPPP Requirements for Sector S - Air Transportation Facilities
MPCA SWPPP Requirements for Sector T - Treatment Works
MPCA SWPPP Requirements for Sector U - Food and Kindred Product
MPCA SWPPP Requirements for Sector V - Textile Mills, Apparel, and Other Fabric Products
MPCA SWPPP Requirements for Sector W - Furniture and Fixtures
MPCA SWPPP Requirements for Sector X - Printing and Publishing
MPCA SWPPP Requirements for Sector Y - Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
MPCA SWPPP Requirements for Sector Z - Leather Tanning and Finishing
MPCA SWPPP Requirements for Sector AA - Fabricated Metal Products
MPCA SWPPP Requirements for Sector AB - Transportation Equipment, Industrial and Commercial Machinery
MPCA SWPPP Requirements for Sector AC - Electronic and Electrical Equipment and Components

Looking for information on Minnesota SWPPP - Industrial Stormwater Training?, go to:
MPCA Industrial Stormwater Training - SWPPP Training - Stormwater Inspection Training

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

MPCA SWPPP Permit Revision - Industrial Stormwater Requirements

On July 6, 2009, MPCA is scheduled to release its proposed Multisector General Permit (MSGP) for industrial stormwater discharges. This permit represents a major shift in stormwater pollution prevention (SWPPP) requirements for Minnesota industries and other affected sectors, such as transportation, POTWs, landfills, etc.

In July, Caltha LLP will be hosting seminars in several cities across Minnesota to provide information on the proposed permit and rule changes, and steps facilities can take to reduce their impact.

For more information, go to:

MPCA SWPPP Permit - Industrial Stormwater Permit Reissue Seminars

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

SPCC Rule Compliance Deadline Extended

On June 11, 2009, EPA again extended the compliance date for compliance with the federal "SPCC Rule". Facilities subject to the SPCC Rule now have until to November 10, 2010 to come into compliance. Facilities must amend or prepare, and implement SPCC Plans by the compliance date in accordance with revisions to the SPCC rule promulgated since 2002. Farms must also amend or prepare their SPCC Plans, and implement those Plans by the same date.
For futher information on SPCC services, go to:
SPCC - 40 CFR 112 Compliance Services

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address SPCC Compliance, Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP atinfo@calthacompany.com
orCaltha LLP Website

Arkansas Multisector Industrial Stormwater Discharge Permit

This article has been updated:

Final Arkansas ADEQ Industrial Stormwater Discharge Permit

****************************************************************

The Arkansas Department of Environmental Quality (ADEQ) has recently released its draft industrial stormwater discharge permit for public review and comment. The revised permit will replace the existing permit.

Some of the key elements of the draft permit include:

Mult-sector requirements. The draft permit now regulates permitees based on INDUSTRIAL SECTOR designations, rather than SIC code alone. The draft incorporates sector specific stormwater monitoring and benchmark requirements; however, no sector specific stormwater controls or SWPPP requirements are included.

Visual Stormwater Inspections (“visual monitoring”). The draft permit requires a minimum of quarterly visual stormwater monitoring events, in addition to chemical (“benchmark”) monitoring. Once per year, outfalls will also need to be examined during dry weather to confirm the elimination of non-stormwater discharges.

Comprehensive Site Compliance Evaluation. Once each year, qualified personnel must conduct a site compliance evaluations. The evaluation must include a visual inspection for evidence of, or the potential for, pollutants entering the drainage system. Measures to reduce pollutant loadings shall be evaluated to determine whether they are adequate and properly implemented, or whether additional control measures are needed. A visual inspection of equipment needed to implement the spill response equipment must also be
made.

Benchmark Monitoring. Twice each year, a sample must be collected at each stormwater outfall and analyzed for four general effluent characteristic parameters, plus any sector-specific monitoring parameters.

[Read more about proposed ADEQ sector specific stormwater benchmark concentrations]

The Arkansas Department of Environmental Quality (ADEQ) has made available the proposed industrial stormwater permit on its website. The permit is open for public comment until May 11, 2009.

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

Washington Ecology Industrial Permit Reissue - Proposed NPDES Permit

The current Washington State Department of Ecology (Ecology) Industrial Stormwater General Permit will expire April 30, 2009. The previous Industrial Stormwater NPDES and State Waste Discharge General Permit, first issued by Ecology in 2002, then reissued in 2007, expired on May 31, 2008. In 2008, Ecology proposed to reissue the expired general permit again without changes until April 30, 2009.

Ecology continues to work with stakeholders on drafting a new permit and plans to release the draft permit on May 20, 2009 for public comment. Once the public comment period ends, Ecology will consider the comments, make appropriate revisions, and then issue a final permit. Ecology intends to issue the final permit on October 21, 2009. Facilities currently covered under the expired permit will automatically be covered under the new final 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

Oil and Gas Facilities - New Stormwater Permit Requirements

The 1987 Water Quality Act (WQA) added section 402(l)(2) to the Clean Water Act (CWA) specifying that EPA and States shall not require NPDES permits for uncontaminated storm water discharges from oil and gas exploration, production, processing or treatment operations, or transmission facilities. The Energy Policy Act of 2005 also added a new provision to the CWA defining the term "oil and gas exploration, production, processing, or treatment operations or transmission facilities" to mean "all field activities or operations associated with exploration, production, processing, or treatment operations, or transmission facilities, including activities necessary to prepare a site for drilling and for the movement and placement of drilling equipment, whether or not such field activities or operations may be considered to be construction activity."

In 2006, EPA published a final rule that effectively exempted from NPDES permit requirements stormwater discharges of sediment from construction activities associated with oil and gas exploration, production, processing, or treatment operations or transmission facilities (with some limited exceptions).

On May 23, 2008, the Ninth Circuit Court of Appeals issued an opinion vacating EPA's 2006 oil and gas construction stormwater regulation. On July 21, 2008, EPA filed a petition for rehearing in this case; on November 3, 2008, the Court issued its order denying EPA’s request.

With the vacatur of the 2006 rule, the effective requirements for oil and gas facilities are the regulations in place prior to the 2006 rule. The relevant regulations that were effective prior to the 2006 rule are:

122.26(a)(2) The Director may not require a permit for discharges of storm water runoff from mining operations or oil and gas exploration, production, processing or treatment operations or transmission facilities, composed entirely of flows which are from conveyances or systems of conveyances (including but not limited to pipes, conduits, ditches, and channels) used for collecting and conveying precipitation runoff and which are not contaminated by contact with or that has not come into contact with, any overburden, raw material, intermediate products, finished product, byproduct or waste products located on the site of such operations.

122.26(e)(8) For any storm water discharge associated with small construction activity identified in paragraph (b)(15)(i) of this section, see 122.21(c)(1). Discharges from these sources, other than discharges associated with small construction activity at oil and gas exploration, production, processing, and treatment operations or transmission facilities, require permit authorization by March 10, 2003, unless designated for coverage before then. Discharges associated with small construction activity at such oil and gas sites require permit authorization by June 12, 2006.

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

Mobile Tanks - Nurse Tanks - SPCC Requirements

The revised SPCC Rule (40 CFR 112) clarified a few points in regards to mobile tanks. First, the Rule clarified that tanks on vehicles used to hold fuels and operating fluids required to operate the vehicle are not intended to be included under the SPCC requirements. Typical mobile refueling equipment would have two types of fuel storage 1) a fuel tank for operation of the engine, and 2) a storage tank used to move fuel around the facility. Under the revised Rule, the engine’s fuel tank (i.e., “motive fuel container”) would not be included under an SPCC Plan; however, the bulk fuel tank the vehicle carries may need be included.

In agricultural settings, mobile tanks are sometimes referred to as "nurse tanks", as they as used to transport fuel to equipment being used in the field.
[Read more about changes to application of SPCC Rule in agricultural settings]

The bulk fuel tank on the refueling vehicle would normally require the same spill protections that other containers need. However, the revised SPCC Rule clarified that these refueling vehicles are exempted from some SPCC requirements. However, when this equipment (included towed equipment) is placed or stored in a designated area of the site, SPCC Rules apply

Caltha LLP provides expert technical support to facilities and/or consulting engineers on compliance with SPCC Rules. Caltha maintains a library of SPCC Plan templates to match site-specific needs. For futher information on SPCC services, go to:
SPCC - 40 CFR 112 Compliance Services
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 atinfo@calthacompany.com
orCaltha LLP Website

Electronic Electrical Manufacturing Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[Read a summary of the overall Minnesota permit, stormwater monitoring, and sector requirements]

Caltha LLP will be conducted seminars on the proposed sector requirements in July & August 2009. Caltha MPCA Industrial Stormwater Permit Requirements Seminars

The proposed permit details requirements for 29 different industrial sectors. The requirements described below are proposed for the Electronic and Electrical Equipment and Components Manufacturing Sector (Sector AC). Sector AC facilities are engaged in a range of product manufacturing, including a. measuring, analyzing, and controlling instruments, photographic and optical goods, watches and clocks; computer and office equipment; and electronic and electrical equipment and components. These requirements are in addition to permit requirements that apply to all sectors.

Inspections:
In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

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:

Electronic, Electrical, Photographic,and Optical Goods (SIC 3571-3579, 3812-3873):
TSS 100 mg/L

Electronic and Electrical Equipment and Components, except Computers (SIC 3612-3699):
TSS 100 mg/L
Total Copper 0.028 mg/L
Total Lead 0.164 mg/L

Note: Benchmarks for zinc and iron were derived based on the Aquatic Life Standards for these parameters in Minnesota Rules.

[Read more about use of Aquatic Life Standards to derive stormwater benchmarks]
[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]

Looking for other sector information? Click here for a link to all sector requirements

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

Transportation Machinery Equipment Manufacture Sector - SWPPP - Stormwater Permit Proposed Requirements

On July 6, 2009, the Minnesota Pollution Control Agency released its proposed multisector industrial stormwater discharge general permit. This permit, once promulgated, will replace the existing industrial stormwater permit, which expired in October of 2002.

[Read a summary of the overall Minnesota permit, stormwater monitoring, and sector requirements]

Caltha LLP will be conducted seminars on the proposed sector requirements in July & August 2009. Caltha MPCA Industrial Stormwater Permit Requirements Seminars

The proposed permit details requirements for 29 different industrial sectors. The requirements described below are proposed for the Transportation Equipment, Industrial and Commercial Machinery Manufacturing Sector (Sector AB). Sector AB facilities are engaged in a wide range of product manufacturing, including:
a. manufacturing engines and turbines,
b. manufacturing farm and garden machinery and equipment,
c. manufacturing construction, mining, and materials handling machinery and equipment,
d. manufacturing metalworking machinery and equipment,
e. manufacturing special industry machinery, except metalworking machinery,
f. manufacturing general industrial machinery and equipment,
g. manufacturing refrigeration and service industry machinery,
h. manufacturing miscellaneous industrial and commercial machinery and equipment,
i. manufacturing motor vehicles and motor vehicle equipment,
j. manufacturing aircraft and parts,
k. manufacturing motorcycles, bicycles, and parts,
l. manufacturing guided missiles and space vehicles and parts, and
m. manufacturing miscellaneous transportation equipment.

These requirements are in addition to permit requirements that apply to all sectors.

Inspections:
In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge.

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

TSS 100 mg/L


[Read more about how benchmarks are used under the proposed MPCA industrial permit]
[Read more about what a 100 mg/L benchmark for TSS relates to]


Looking for other sector information? Click here for a link to all sector requirements

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