The San Francisco Bay Branch is pleased to present:
Sonoma Water Riverbank Filtration and Radial Collector Well Program
Featuring:
Jim Warner,
Senior Partner, ERM
Wednesday, November 14th
*NOTE THIS NOVEMBER MEETING IS ONE WEEK EARLIER THAN NORMAL TO AVOID CONFLICTS WITH THANKSGIVING
PRESENTATION:
The Sonoma County Water Agency (SCWA) provides water to several municipalities and water districts in Sonoma and Marin Counties. The SCWA water system serves approximately 570,000 people and has an estimated short-term peak production capacity of 112 million gallons per day (mgd). Water production is concentrated along the Russian River west of Santa Rosa, where the SCWA operates six radial collector wells, seven conventional vertical wells, an inflatable dam, and numerous infiltration ponds. This presentation provides an overview of the ongoing evaluation program for the radial collector wells. The goal of the program is to quantify and evaluate the potential causes of changes in water production capacity over time, extending from 1959 into the future. The collector wells include 13 to 18 foot-diameter caissons that are approximately 100 feet deep. The number of lateral wells near the base of each caisson varies from 6 to 14, with lateral lengths varying from 45 to 375 feet. The program includes visual inspections and measurements of the caissons by scuba divers, large scale aquifer testing, flow testing and video surveys in the laterals, and water quality testing. The results are used for planning for sustainable water supplies, operational optimization, and maintenance planning.
SPEAKER BIOS:
Jim Warner is a hydrogeologist with over 30 years of experience related to site investigation and remediation, water supply assessments, litigation, due diligence, and environmental compliance. Jim is a Professional Geologist in the State of California and has BS/MS degrees in Geological Sciences from Ohio University.
DINNER COSTS:
-$50 for Members
-$55 for Non-Members
-$10 for Student attendees
* ONSITE REGISTRATION IS AVAILABLE.
MEAL OPTIONS:
-Salmon Alla Bella
-Chicken Breast and Wild Mushroom Piccata
-Wild Mushroom or Roasted Vegetable Ravioli
ANNOUNCING SCHOLASTIC SPONSORSHIP OPPORTUNITIES - ALL PROCEEDS TO BENEFIT SCIENCE STUDENTS:
GRA San Francisco Bay Branch is interested in supporting university science students. Our Scholastic Sponsorship Program is an opportunity to publicize your business while contributing toward a good cause. Your sponsorship will be acknowledged in the announcement, at the meeting, and space will be provided for a small display and brochures. Please contact Abigail Madrone at amadrone@westyost.com for details.
If you have any announcements or questions, please contact the Branch President, Eric Sandberg (esandberg@cascade-env.com), or Branch Treasurer David W. Abbott (dabbottgw@gmail.com) at 510-928-4543.
We are actively looking for potential speakers. If you have a topic or suggestion, please contact the Branch President, Eric Sandberg (esandberg@cascade-env.com).