Erosion & Sediment Control (ESC)

Before the start of construction activity, it is imperative that effective erosion and sediment control (ESC) measures be established to eliminate pollutants early on from entering our public streets and local bodies of water.

All ESC measures within the City limits shall be performed in compliance with:
  • All applicable City ordinances, standard notes, policies, procedures
  • Chapters 8.28 and 18 of the Temecula Municipal Code
  • City’s Engineering and Construction Manual
  • Municipal Separate Storm Sewer System (MS4) state permit issued by the San Diego Regional Water Quality Control Board (SDRWQCB)
  • National Pollutant Discharge Elimination System (NPDES) permit for construction activities
Erosion & Sediment Control Notes
The Department of Public Works oversees all ESC measures performed within City limits. The City’s current Erosion and Sediment Control Notes (PDF) are intended to be used on all Public Works plans for both private development and public right-of-way improvements. The notes are comprehensive and should be applied according to site-specific conditions.

All associated permits for ESC measures shall be obtained prior to performing any erosion and sediment controls. A grading permit may be required if installing ESC measures on private development; an encroachment permit will be required if installing ESC measures within public right-of-way.

Construction Runoff Compliance
All construction/site work (including land clearing) shall implement ESC and water quality measures, as applicable, to ensure that pollutants are not discharged from their site; and if so, that they be reduced to the Maximum Extent Practicable (MEP). The measures shall also ensure that pollutants not cause or contribute to an exceedance of water quality objectives in local watercourses.

Best Management Practices (BMPs)
BMPs are management practices and operating procedures/devices executed to prevent or reduce pollutant discharges into public or private storm water conveyance systems. BMPs can significantly reduce pollutant discharges from construction sites, if properly implemented. Typical BMPs may include an effective combination of ESC measures, good housekeeping practices and the maintenance of all BMPs at all times. The permittee shall be responsible for continual maintenance of the project site’s ESC measures for the entire duration of the construction activity.

Erosion Control Measures
Typical erosion control BMPs/measures may include the:
  • Application of wood mulch
  • Application/establishment of vegetative cover
  • Bonded fiber matrix
  • Fiber rolls
  • Placement of plastic sheeting
  • Stapled or pinned blankets (i.e., straw, coconut or other)
  • Other measures, as approved by the City Engineer
Sediment Control Measures
Typical sediment control BMPs/measures may include:
  • Checking dams
  • Desilting basins (designed according to the method provided in the California Stormwater Quality Association’s (CASQA’s) Construction BMP Handbook)
  • Drainage inlet protection
  • Fiber rolls
  • Graded berms
  • Gravel bag chevrons
  • Routine street sweeping
  • Silt fences
The City Engineer will inspect all work associated with the placement and maintenance of ESC measures to ensure compliance with Chapters 8.28 and 18 of the Temecula Municipal Code, the Engineering and Construction Manual and all applicable City ordinances, standard notes, policies and procedures as well as applicable state and federal regulations.