Preparing for Rainy Season

Updated: Mar 31

We just had some of the earliest pre-winter rains that we can remember. It's a great reminder to start getting buttoned up for Winter. The rainy season should officially begin mid-October to November, but considering that we have more rain in the forecast this week we strongly encourage everyone to get on Winterization.

To prepare for the upcoming rainy season, run through our simplified check-list below. And, check in with your Stormwater Manager if you have any questions.

  1. Implement an effective combination of erosion and sediment controls for active and inactive disturbed soil areas

  2. If there work areas that are active and need to be left uncovered, implement erosion control on as much area as possible, and limit the footprint of active disturbed soil to only that which can easily be protected prior to a rain event

  3. Plan to remove or cover stockpiles

  4. Move stored materials out of flowlines

  5. Make sure perimeter controls are effective and in good condition

  6. Schedule erosion control application

  7. Make sure inlet protection is clean and effective

  8. Re-direct run-on around work areas

  9. Prepare to put chemicals away prior to rain

  10. Implement effective housekeeping

  11. Order emergency supplies to have on hand such as gravel bags, fiber rolls, and plastic cover

Remember, we are here to help you. Should we see any "chocolate milk" water leaving your site we will need your help to get the situation under control as soon as possible. Accidents do happen, but we want to work as hard as we can to prevent them.

It's also our goal to help you avoid any fines. As a reminder, fines can be up to $37,500 per calendar day per violation, if under the California Construction General Permit.

Feel free to reach out to our team if you have any questions at or (707) 693-1926.

Click on any of the topics below if you would like additional guidance,

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