Construction Runoff Control Practices Polluted stormwater runoff from construction sites often flows to storm drainage systems and ultimately is discharged into local rivers and streams. The runoff can contain: SEDIMENT During a short period of time, construction sites can contribute more sediment to streams than can be deposited naturally during several decades. NUTRIENTS (nitrogen and phosphorous) These are of specific concern and can cause significant water quality impairment. OTHER POLLUTANTS Solid and sanitary wastes, pesticides, oil and grease, concrete truck washout, construction chemicals, construction debris, and metals may be discharged and cause an impact on receiving waters. Effective construction site pollution prevention can dramatically reduce pollute loading to stream ecosystems. The Keep it Clean Partnership provides the following to help you with this effort.

Erosion Control Training and Certification
The Keep it Clean Partnership provides a low-cost, eight-hour erosion control training and recertification program available for both public and private inspectors and contractors. The Construction Site Inspector and Contractor Training Manuals used in this training are available.

Construction and Post-Construction Regulations
In 2004, the The Keep it Clean Partners, with the exception of Boulder County, adapted and adopted the Keep it Clean Partnership template ordinance that affects all construction/development activity that disturbs 1 or more acres of land, as well as activity that disturbs less than 1 acre of land, but is part of a larger common plan of development. The owner and/or operator of the construction site will be responsible for complying with these requirements and plays a key role in protecting our water quality. These requirements include temporary erosion and sediment control practices during construction and the installation of permanent stormwater quality facilities to ensure long-term protection of the water quality for runoff from the developed site. The ordinance is a requirement of the Keep it Clean Partner’s Municipal Stormwater Discharge Permit issued by the State of Colorado in March 2003.

The Keep it Clean individual Partners’ ordinances can be found on the websites listed below:

PARTNER (each opens in new window) ORDINANCE ADOPTED Boulder County August 11, 2005 Boulder December 6, 2004 Longmont (Chapter 14.26) January 12, 2005 Louisville (Title 13; water/sewer chapter 13.36) December 21, 2004 Superior (Chapter 16, Article XXXIX) December 13, 2004 Erie November 9, 2004

In general construction and development contractors are responsible for the following:

1. Stormwater Management Plan (SWMP), including erosion and sediment control practices and proposed permanent stormwater quality controls, or Best Management Practices (BMPs). Guidelines for preparing a SWMP can be found at www.cdphe.state.co.us/wq/PermitsUnit/wqcdpmt.html and in local design and construction standards. Permanent stormwater quality controls, or BMPs, are to be designed according to the Urban Drainage and Flood Control District’s Urban Storm Drainage Criteria Manual –Volume 3, or other methods approved by the community.
2. Owner/operator is responsible for the following: Executing a maintenance agreement with the municipality to ensure future inspection, maintenance, repairs, and proper functioning of the permanent BMPs.

1. A copy of the application submittal for coverage under the State’s General Permit of Construction Activities
2. Starting March 30, 2005: documentation of certification in erosion and sediment control, or acceptable equivalent, for personnel responsible for supervising the installation and maintenance of sediment and erosion control practices.

1. Maintain a copy of the SWMP onsite at all times. The approved SWMP must be maintained and made available to municipal inspectors upon request.
2. Install and maintain erosion and sediment control BMPs as specified in the SWMP. Sediment, debris or other pollutants from construction operations must be managed to prevent flow to the storm drainage system.
3. Maintain inspection and maintenance records of BMPs onsite with the SWMP.
4. Starting March 30, 2005, the installation and maintenance of BMPs shall be supervised by personnel certified in erosion and sediment control.

1. Implement ongoing inspection, maintenance, and repairs of permanent BMPs according to the maintenance agreement with the municipality.
2. Submit written documentation that permanent BMPs were constructed in accordance with approved plans submitted in the design review phase.

Fines up to $1,000 per day for ordinance violations may be imposed.

It is envisioned that this new authority will be used for repeat violations and for significant violations.

• General Requirements for all Construction Activities (regardless of size) – Owner/operator is responsible for the following:

1. Manage construction activities to prevent the illegal discharge of sediments or other pollutants to the storm drainage system.
2. Receive permission from the municipality to discharge any non-stormwater discharge to the storm drainage system. These discharges may include those covered under the State’s NPDES permit system, such as construction dewatering.