Erosion & Sediment Control
ESC Certification (RP & PD) | Certification Training Schedule | Applications & Documents
What is the ESC program?
Urban construction sites are a significant source of stormwater pollutants such as sediment, oils and greases, bacteria, toxic chemicals, corrosive liquids, excess nutrients, loose trash and debris, as well as fugitive dust if not properly controlled.
The Erosion and Sediment Control program’s mission is to manage and eliminate construction site pollutants through education, permitting, inspection, compliance assistance and enforcement. By working together with the construction community, the ESC Division’s goals are to protect our water quality, minimize the environmental impact of our growing city, and remain in compliance with State and Federal regulations.
- What kind of construction projects are required to have ESC Permits?
All construction sites within the City of Boise should practice erosion control, sediment control and pollution prevention Best Management Practices (BMPs) regardless of size or ownership.
If a residential, commercial, or municipal construction project disturbs 10 cubic yards or more, a City of Boise ESC permit is required. Construction within the Ada County Highway District (ACHD) Right-of-Way is managed by ACHD’s Stormwater Quality Division.
- City of Boise ESC Permits and ESC Plan Requirements
- ESC General Permit: Issued for residential construction including new homes and duplexes, home additions and site improvements (> 500 sq. ft. or 10 cubic yards earthwork), residential demolition, material staging and stockpiling, and certain minor commercial tenant improvements (500-1000 sq. ft. with exterior work). General Permits require that a certified ESC Responsible Person must have operational control at the site. No ESC plan submittal is required for General Permits.
- ESC Site Specific Permit: For residential construction, new homes and home additions (>500 sq. ft. or 10 cubic yards) in designated Hillside or Environmentally Sensitive zones, multifamily units and complexes, and subdivision development. For commercial construction, all new buildings, significant exterior site improvements, demolitions, and subdivision development. A Site Specific ESC permit requires submittal of a site specific ESC plan that includes a site map and project narrative detailing BMPs to be implemented at the site. These projects must have a certified Plan Designer, Responsible Person, and Site Preparation Inspection before significant earthwork and after installation of initial BMPs described in the ESC plan.
- Questions? If any questions about what type of permit your construction project will need, please contact the ESC Inspectors.
- ESC Training and Certification
All projects requiring an ESC permit must have a City-certified Responsible Person who has direct, day-to-day control over the site's construction activities. To develop an ESC plan for ESC Site Specific Permit, a Plan Designer certification is required. Please see the ESC Certification Training Schedule for further details.
- Site Preparation Inspection Policy
This policy clarifies the ESC site preparation requirement for City of Boise ESC permit holders. For certain projects, scheduling a site preparation inspection is required before any land disturbing construction activity and after the installation of BMPs specified in the project's ESC/SWPPP site maps and narrative. Follow the link for more details.
- Construction Site Dewatering Plan Preparation and Policy
If dewatering of groundwater or excavations is required at construction sites, this policy regarding dewatering plan preparation and implementation must be followed. The intent of this policy is to prevent the discharge of pollutants to MS4 storm drains and to surface waters throughout Boise due to failure to implement a dewatering plan that is compliant with City, State, and Federal water quality standards. Follow the link for more details.
- Concrete Washout Enforcement Update
Uncontained concrete washout wastewater observed at construction sites will result in the ESC or BLD permit holder being cited with a special investigation fee of $78.75, a re-inspection fee of $55, and a parcel hold for all inspection activity until fees are paid, dumped washout is cleaned up, and a new compliant washout is installed and inspected.”