Proposed Extension of El Charro Road

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Zone 7 recognizes that an extension of El Charro Road from Stanley Boulevard to I-580 has been included in regional plans.

Protection of the water quality of Cope Lake, Lake H, and Lake I and maintaining the integrity of the quarry lakes and the quality of the underlying groundwater basin is of utmost priority to Zone 7’s water management mission.

The planning, design, construction, and maintenance of the road should address stormwater runoff from the road to avoid pollutants from entering the recharge ponds.  Runoff from the road is at risk of containing PFAS, trash, sediment, bacteria, fertilizers, oil, micro-rubbers, toxic metals, and other contaminants. Runoff from the road should not flow into our recharge facilities and should be collected and treated onsite or sent to a stormwater system that would treat the runoff offsite. The following are precautionary measures to prevent pollutants from entering the recharge ponds.

  • Stormwater Management Systems

Install storm drains, retention basins, bioswales, or constructed wetlands to capture and treat stormwater before it enters the water body. Stormwater systems should effectively treat runoff and prevent pollutants from reaching groundwater through infiltration. Ensure C.3 compliance of the Municipal Regional Stormwater Permit (MRP).

  • Vegetative Buffers

Maintain or restore riparian buffers (strips of vegetation) between the road and the water body to filter runoff.

  • Erosion and Sediment Control

Implement best management practices (BMPs) like silt fences, erosion control blankets, and hydroseeding during and after construction.

  • Hazardous Material Controls

Prevent accidental spills of fuel or chemicals during roadwork or vehicle accidents. The operational parameters of the road should include regulations on the transport of hazardous materials on the El Charro Road extension. An overturned or otherwise leaking truck could spill hazardous materials such as chemicals, fuels or other toxic substances into the creeks, lakes and groundwater recharge areas. Regulations could include but not be limited to route and parking restrictions, specialized training for drivers, enforcement and a spill response plan.

  • Road Maintenance Practices

Limit use of herbicides/pesticides near water sources. Regularly inspect and clean drainage infrastructure.