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Weather Events

Wet Weather Event Information

May contain: flood and water

 

Wet Weather Management Totals / Blending Events

(Blended wastewater is biologically treated wastewater blended with wastewater that bypasses biological treatment units. Such discharges are approved under the bypass conditions stated in 40 C.F.R. section 122.41(m)(4) when (1) the Discharger’s peak wet weather influent flow exceeds the capacity of the biological treatment units of 2.3 MGD)

January 2023

Wet Weather Event: 1/15/2023 

Amount of rain recorded: 1.85" 

Blending Event Date: 1/15/2023 @ 2215 hrs - 1/16/2023 @ 1535 hrs

Blending Event Duration: 17 hrs, 20 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 0.445 MGD

 

Wet Weather Event: 1/14/2023 

Amount of rain recorded: 1.45" 

Blending Event Date: 1/14/2023 @ 0700 hrs - 1/15/2023 @ 0130 hrs

Blending Event Duration: 18 hrs, 30 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 0.503 MGD

 

Wet Weather Event: 1/11/2023 

Amount of rain recorded: 2.05" 

Blending Event Date: 1/11/2023 @ 1540 hrs - 1/12/2023 @ 0540 hrs

Blending Event Duration: 12 hrs, 0 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 0.781 MGD

 

Wet Weather Event: 1/9/2023

Amount of rain recorded: 2.45" 

Blending Event Date: 1/9/2023 @ 0705 hrs - 1/09/2023 @ 2105 hrs

Blending Event Duration: 14 hrs, 0 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 0.884 MGD

 

December 2022

Wet Weather Event: 12/31/2022

Amount of rain recorded: 4.4" 

Blending Event Date: 12/31/2022 @ 0743 hrs - 1/01/2023 @ 0422 hrs

Blending Event Duration: 20 hrs, 39 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 1.70 MGD

 

Wet Weather Event: 12/27/2022

Amount of rain recorded: 2.75" 

Blending Event Date: 12/27/2022 @ 0557 hrs - 12/27/2022 @ 1505 hrs

Blending Event Duration: 9 hrs, 8 min

Blending Amount Stored: 315,249 Gal.

Blending Amount Discharged: 0.18 MG

 

December 2021

Wet Weather Event: 12/23/2021

Amount of rain recorded: 3.3" 

Blending Event Date: 12/23/2021 @ 1315 hrs - 12/23/2021 @ 1715hrs

Blending Event Duration: 4 hrs, 0 min

Blending Amount Stored: 315,249 

Blending Amount Discharged:  .110MG

 

Wet Weather Event: 12/13/2021

Amount of rain recorded: 3.3" 

Blending Event Date: 12/13/2021 @ 0924 hrs - 12/14/2021 @ 1408hrs

Blending Event Duration: 28 hrs, 44 min

Blending Amount Stored: 315,249 

Blending Amount Discharged: 1.5 MG

 

October 2021

Wet Weather Event: 10/24/2021

Amount of rain recorded: 4.1" 

Blending Event Date: 10/24/2021 @ 0640 hrs - 10/25/2021 @ 1557 hrs

Blending Event Duration: 33 hrs, 17 min

Blending Amount Stored: 315,249 (new storage capacity) 

Blending Amount Discharged: 1.821 MG

 

March 2019

Wet Weather Event: 3/6/19

Amount of rain recorded: 1.6" 

Blending Event Date: 3/6/19 @ 1100hrs - 3/6/19 @ 1412hrs

Blending Event Duration: 3hr 12min

Blending Amount Stored: 315,249 

Blending Amount Discharged: 0.060 MG

 

February 2019

Wet Weather Event: 2/13/19-2/15/19

Amount of rain recorded: 6.6" 

Blending Event Date: 2/13/19 @ 0837hrs - 2/15/19 @ 1015hrs

Blending Event Duration: 49hr 28min

Blending Amount Stored: 315,249 

Blending Amount Discharged: 3.679 MG

 

January 2018 

Wet Weather Event: 1/8/2018 - 1/9/2018

Amount of rain recorded: 4.35" 

Blending Event Date: 1/8/2018 @ 1957hrs - 1/9/2018 @ 1030hrs

Blending Event Duration: 14hr 33min

Blending Amount Stored: 315,249 gallons 

Blending Amount Discharged: 0.756 MGD

 

February 2017

Wet Weather Event: 2/20/2017 - 2/21/2017

Amount of rain recorded: 1.9" 

Blending Event Date: 2/20/2017 @ 0800hrs - 2/21/2017 @1624hrs

Blending Event Duration: 32hr 24min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 1.342 MGD

 

Wet Weather Event: 2/9/2017

Amount of rain recorded: 1.15" 

Blending Event Date: 2/9/2017 @ 1226hrs - 2/9/2017 @ 2315hrs

Blending Event Duration: 10 hr 49min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.382 MGD

 

Wet Weather Event: 2/8/2017

Amount of rain recorded: 0.70" 

Blending Event Date: 2/8/2017 @ 0744hrs - 2/8/2017 @ 1715hrs

Blending Event Duration: 9 hr 29min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.250 MGD

 

Wet Weather Event: 2/7/2017

Amount of rain recorded: 2.9" 

Blending Event Date: 2/7/2017 @ 0310hrs - 2/7/2017 @ 2240hrs

Blending Event Duration: 19 hr 30min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 1.446 MGD

 

January 2017

Wet Weather Event: 1/22/2017

Amount of rain recorded: 2.2" 

Blending Event Date: 1/22/2017 @ 0823 hrs - 1/22/2017 @ 2330 hrs

Blending Event Duration: 15 hr 7 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.438 MGD

 

Wet Weather Event: 1/20/2017

Amount of rain recorded: 1.25" 

Blending Event Date: 1/20/2017 @ 1030 hrs - 1/20/2017 @ 1230 hrs

Blending Event Duration: 2 hr 0 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.014 MGD

 

Wet Weather Event: 1/12/2017

Amount of rain recorded: 0.30" 

Blending Event Date: 1/12/17 @ 1355 hrs - 1/12/17 @ 1455 hrs

Blending Event Duration: 1 Hr

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.006 MGD

 

Wet Weather Event: 1/10/17 - 1/11/17

Amount of rain recorded: 3.65" 

Blending Event Date: 1/10/17 @ 0920 hrs - 1/11/17 @ 1330 hrs

Blending Event Duration: 28 Hrs 10 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 1.388 MGD

 

Wet Weather Event: 1/08/17 - 1/09/17

Amount of rain recorded: 2.70" 

Blending Event Date: 1/08/17 @ 0900 hrs - 1/09/17 @ 1145 hrs

Blending Event Duration: 26 Hrs 45 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.570 MGD 

 

December 2016

Wet Weather Event: 12/15/16 - 12/16/16

Amount of rain recorded: 2.25" 

Blending Event Date: 12/15/16 @ 1650 hrs - 12/16/16 @ 0210 hrs

Blending Event Duration: 9 Hrs 20 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 0.466 MGD 

 

January 2016

Wet Weather Event: 1/18/16

Amount of rain recorded: 1.8" 

Blending Event Date: 1/18/16 @ 0340hrs - 1/18/16 @ 1120hrs

Blending Event Duration: 7 Hrs 40 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 46,000 gallons

 

Wet Weather Event: 1/6/16

Amount of rain recorded: 2.65" 

Blending Event Date: 1/6/16 @ 1145hrs - 1/6/16 @ 1415hrs

Blending Event Duration: 2 Hrs 30 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 83,000 gallons

 

December 2014

Wet Weather Event: 12/11/14

Amount of rain recorded: 3.5" 

Blending Event Date: 12/11 @ 1150hrs - 12/12 @ 1600hrs

Blending Event Duration: 28 Hrs 10 min

Blending Amount Stored: 315,249 gallons (new storage capacity) 

Blending Amount Discharged: 1.672 MGD

 

Questions?  Please Call 415-435-1501