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EEC Environmental’s (EEC) Stormwater/ National Pollutant Discharge Elimination System (NPDES) group has developed and implemented municipal, industrial, commercial, and construction programs to achieve full compliance with federal, state, and local stormwater regulations. EEC has been specializing in stormwater compliance for more than 20 years. Our staff has assisted both Municipal Separate Storm and Sewer Systems (MS4) programs and industrial facilities with compliance issues as part of these services. EEC develops Local Implementation Plans (LIPs) that include program management and the inventory, prioritization, and inspection of industrial, commercial, and municipal facilities.

Successful implementation and management of a program demand a clear understanding of the NPDES permit requirements and solid teamwork between staff and consultants/contractors. EEC stands poised to support any city or industrial facility with their compliance needs, having supported other cities and industrial facilities with the development and implementation of their stormwater/NPDES programs, as well as having developed multiple LIPs.

Environmental Consulting and Support for Level 1 and 2 ERAs

Level 1 & 2 ERAs

As part of the State of California 2015 Industrial General Permit, EEC Environmental (EEC) is assisting industrial facilities with compliance-related issues pertaining to this permit. In 2016, EEC supported over ten industrial facilities in Southern California with their Elevated Response Actions (ERA) Level 1 site evaluations and reports as required by the state’s Industrial General Permit.

These projects consisted of reviewing the Numeric Action Limit (NAL) exceedances for each facility, identifying potential sources of the exceedances, recommending corrective actions including best management practice (BMP) enhancements, and completing the ERA Level 1 Reports. EEC currently has three Qualified Industrial Stormwater Practitioners (QISPs) on staff and has one Qualified SWPPP Practitioner (QSP) / Quality Spread Differential (QSD) on staff as well. With the completion of the 2016/2017 monitoring period, EEC is now assisting multiple industrial facilities with completing Level 1 and 2 ERAs by completing ERA Level 1 evaluations and reports, or Level 2 Action Plans, depending on their compliance status.

Stormwater Inspection Services and Environmental Compliance Support


Industrial and Commercial Inspections

Utilizing our knowledge and experience, EEC Environmental (EEC) can provide the field inspection services needed to ensure continued compliance with the regulations of any Municipal Separate Storm Sewer System (MS4) National Pollutant Discharge Elimination System (NPDES) permit.

EEC can conduct on-site facility inspections as outlined in the MS4 NPDES permit. EEC can also evaluate each high, medium, and low industrial facility to determine if that facility’s priority should be reclassified.

As part of the facility inspections, EEC assesses indoor and outdoor areas associated with stormwater runoff and conveyance and reviews the following: material and waste handling and storage practices; written documentation of pollutant control BMP implementation, including internal inspection logs and reports, stormwater pollution prevention plan (SWPPP) (as applicable), and spill response plans; maintenance procedures; and implementation of source control measures.

Construction Site Inspections

To verify the implementation and effectiveness of construction site BMPs, EEC conducts visual site inspections of high-, medium-, and low-priority construction projects. At a minimum, construction site inspections include:

  • Verification of coverage under the General Construction Permit (for sites greater than 1 acre);
  • A documented review of the Erosion and Sediment Control Plan (ESCP) to ensure that the BMPs implemented on-site are consistent with the appropriate phase of construction;
  • Visual observation for non–stormwater discharges and potential pollutant sources;
  • An assessment of the effectiveness of BMPs implemented at the site and identification of the need for any additional/modified BMPs.
Stormwater Design Services and Environmental Consulting


EEC Environmental (EEC) has experience in all aspects and stages of stormwater design. We begin with taking the client through an alternatives analysis. This process identifies all the options for Best Mangement Practices (BMPs) that would meet their Total Maximum Discharge Limitations (TMDL) requirements and the associated capital and operational cost for each of the identified BMPs. From this list, they can select the BMP that works best with their operations and is most cost-effective.

The result of the alternatives analysis is a 30% design of the selected option. EEC then takes the selected option through the full design process to include the preparation of a bid package and identification of all applicable permit requirements. EEC works with several preferred stormwater construction companies and can assist with the selection of the best choice for each project.

Best Management Practices for Stormwater Management - BMPs


EEC Environmental (EEC) assists developers and commercial/industrial facilities with the identification and implementation of best management practices (BMPs) to assist in consistently meeting municipal separate storm sewer system (MS4) requirements or California’s established numeric action levels (NALs). Industrial facilities are required to implement source control BMPs. These BMPs are intended to keep pollutants out of the stormwater and could be structural or non-structural. However, when source control BMPs are not sufficient to consistently meet the NALs, a facility may need to implement advanced BMPs, which are controls intended to remove the pollutants from the stormwater. Examples of source control BMPs and advanced BMPs include:

Source Control BMPs:
  • Good Housekeeping (i.e., sweeping, preventing material tracking)
  • Preventative Maintenance
  • Spill and Leak Prevention and Response
  • Material Handling and Waste Management
  • Erosion and Sediment Controls
  • Employee Training
  • Quality Assurance Record Keeping
Advanced BMPs:
  • Exposure Minimization (i.e., shelters, preventing contact with materials)
  • Containment and Discharge Reduction (i.e., infiltration, reuse, diversion, LID BMPs)
  • Treatment Control BMPs (i.e., mechanical, chemical, biologic, or other treatment technology)
Consulting for Stormwater Pollution Prevention Plans - SWPPPs


EEC Environmental (EEC) has an extensive background and is an industry leader in the development of Stormwater Pollution Prevention Plans (SWPPPs). EEC’s comprehensive approach provides our clients with the critical support needed to navigate complex regulatory requirements and define on-site stormwater management needs.

EEC’s licensed Professional Engineers use the latest technologies to drive innovative approaches to best management practices (BMPs) and minimize stormwater impacts and associated costs. EEC employs a staff of highly trained personnel (state-certified in Maryland and California) to manage stormwater projects and ensure SWPPP BMPs are effectively implemented and maintained across the United States.

Municipal Separate Storm and Sewer Systems Compliance Support - MS4


EEC Environmental (EEC) has assisted Municipal Separate Storm Sewer Systems (MS4) programs with stormwater compliance for over 20 years. Successful implementation and management of a stormwater program demand a clear understanding of the National Pollutant Discharge Elimination System (NPDES) and MS4 permit requirements and solid teamwork between staff and consultants/contractors. Having supported cities, developers, and industrial facilities with the development and implementation of their stormwater/NPDES programs, and developed multiple LIPs, EEC stands poised to support any city, developer, or industrial facility with their stormwater compliance needs.

Services EEC provides as part of MS4 permit compliances include the following:
  • Conduct Stormwater Compliance Inspections
  • Conduct Investigations of Illicit Stormwater Discharges and Illicit Connection
  • Conduct Inspections of Commercial, Industrial, and Construction Sites
  • Develop Local Implementation Plans (LIPs)
  • Analyze Urban Runoff Treatment Technologies
  • Track and Manage Inspections and Facility Inventory
  • Evaluate Industrial Status Pertaining to Submitting Notices of Intent (NOI) or No Exposure Certification (NEC)
  • Manage Trash Requirements and Trash Collector Best Management Practices (BMPs)