C.3 Workshops & Conferences

Viewing Presentations

†To obtain Power Point versions of PDFs marked with a dagger, please contact the CCCWP at cleanwater@pw.cccounty.us or 925-313-2360.

*To obtain Word or Excel document versions of documents marked with an asterisk, please contact the CCCWP at cleanwater@pw.cccounty.us or 925-313-2360

If you don't have Powerpoint, you can download the files to your computer and then view them online using Microsoft's .pptx viewer.

"Changes to Municipal Regional Stormwater Permit, Provision C.3," presentation at Planning Directors Meeting July 8, 2022

• Presentation Slides (PDF)

"Planning, Design, Construction, and Maintenance of Low Impact Development Features and Facilities," webinar, May 24, 2022

• Agenda (PDF)
• Presentation Slides (PDF)

"Planning, Design, Construction, and Maintenance of Low Impact Development Features and Facilities," webinar, May 11, 2021

• Agenda (PDF)

"Planning, Design, Construction, and Maintenance of Low Impact Development Features and Facilities," February 11, 2020

• Agenda and Request for Feedback (PDF)
• Presentation Slides (PDF)†

"Maintaining Green Infrastructure/Bioretention Facilities," March 21, 2019

• Agenda and Request for Feedback (PDF)*
• Presentation Slides: What is Green Infrastructure (PPTX) (Dan Cloak)
• Presentation Slides: Building Blocks of Bioretention (PDF)†(Megan Stromberg)
• Presentation Slides: Preparation for Maintenance (PDF)† (Megan Stromberg)
• Presentation Slides: Debris Removal and Weeding (PDF)† (Megan Stromberg)
• Presentation Slides: Biotreatment Soil Mix and Mulch (PDF)† (Megan Stromberg)
• Presentation Slides: Plants and Irrigation in Bioretention (PDF)† (Megan Stromberg)
• Field Walk Notes (PDF)

“Planning, Design & Construction of Low Impact Development Features and Facilities,” April 24, 2018

• Agenda (PDF)

• Presentation Slides (PDF)†

“Low Impact Development Planning, Design, and Construction,” June 7, 2016

• Agenda (PDF)

• Presentation Slides (PDF)†

“Low Impact Development Planning, Design, and Construction,” March 17, 2015

• Agenda (PDF)

• Presentation Slides: Stormwater Control Plan Review and Bioretention Design (PDF)†

• Presentation Slides: LID Construction Inspection (PDF)†

• Presentation Slides: Bioretention Soil Testing Demonstration (PDF)†

• Falling Head Test calculations (PDF)*

“Low Impact Development Planning, Design, and Construction,” June 12, 2014

• Agenda (PDF)

• Flyer (PDF)

• Presentation Slides (PDF)†

“Implementing MRP Provision C.3 Requirements for Land Developments,” June 11, 2013

• Agenda (PDF)

• Presentation Slides (PDF)†

“How to Prepare Stormwater Control Plans for Development Projects”, May 17, 2012

• Announcement Flyer (PDF)

• Agenda (PDF)

• Greeting (PDF)†

• Background and Overview of Provision C.3, Stormwater Treatment, Hydromodification Management, and Low Impact Development (LID) (PDF)†

• Analyzing a Site; Preparing and Documenting Your Conceptual Design (PDF)†

• When and How to Evaluate the Feasibility of Harvesting and Reuse (PDF)†

• Using the Stormwater C.3 Guidebook, Template, and IMP Sizing Calculator to Prepare Your Stormwater Control Plan (PDF)†

• Bioretention: How to Get the Details Right (PDF)†

Building and Testing Rain Gardens

Presentation (PDF)† at the California Stormwater Quality Association Annual Conference, September 25-27, 2011

Planning, Design, and Construction of Low Impact Development Facilities, May 23, 2011

• Workshop Flyer (PDF)

• Agenda (PDF)

• Speaker Information (PDF)

• New Requirements for Infiltration, Evapotranspiration, and Harvesting/(Re)Use: Where Are the Regulations Going? (PDF)†

• Overview of New Content in the Stormwater C.3 Guidebook, 5th Edition (PDF)†

• LID Other than Bioretention: Site Preservation, Permeable Pavements, Green Roofs, Dispersion to Landscape, and Harvesting/(Re)Use (PDF)†

• Design Standards for Bioretention Facilities (PDF)†

• Grading and Drainage Design for Bioretention (PDF)†

• Geotechnical Constraints in Stormwater Infiltration Practice (PDF)

• Physical Properties of Bioretention Soils (PDF)†

• Successful Plant Palettes for Bioretention (PDF)†

• Putting it All Together: Analyzing a Project for LID and Documenting Compliance with LID Design (PDF)†

• Photo Tour and Review of Contra Costa LID Sites (PDF)†

Contra Costa Presentations at the California Stormwater Quality Association (CASQA) Workshop, November 1, 2009

• Low Impact Development: What it is and What it Does (PDF)†

• The Contra Costa Approach: Low Impact Development for Stormwater NPDES Compliance (PDF)†

• LID Implementation: Concept - Design - Execution (PDF)†

• LID Challenge: Topography and Density (PDF)†

• Low Impact Design Implementation: Lessons Learned (PDF)†

• Low Impact Development (LID) for Large Scale Commercial (PDF)†

IMP Sizing Calculator Workshop, October 29, 2009

• Agenda (PDF)

• C.3 Guidebook review and update (PDF)†

• Using the IMP Sizing Calculator (PDF)†

• Example project file for use with the IMP Sizing Calculator (XML) (5 KB .xml)

• Example project sketch (PDF) (113KB .pdf)

California Water Environment Modeling Forum—Watershed and Urban Hydrology Modeling Workshop, June 22, 2007

• Practical Application of Modeling Results to Land Use Policies in Contra Costa County (PDF)†, Dan Cloak, Dan Cloak Environmental Consulting

California Water Environment Federation Pretreatment, Pollution Prevention, and Stormwater Conference, Napa, February 26-28, 2007. Special all-day session, “User-Friendly Stormwater Treatment and Flow Control for New and Redevelopment Projects”

• Stormwater Treatment and Flow-Control Requirements in Phase I and Phase II Municipal NPDES Permits (PDF)†, Dan Cloak, Dan Cloak Environmental Consulting

• Hydrograph Modification: An Introduction and Overview (PDF)†, Christie Beeman and Jeff Haltiner, Philip Williams Associates

• Options for Flow-Control Compliance and Stream Stability Analysis (PDF)†, Christie Beeman and Andrew Collison, Philip Williams Associates

• Low Impact Development for Stormwater Treatment and Hydrograph Modification Management (PDF)†, Mike Flake, Brown and Caldwell

• Sizing Stormwater Control Facilities to Address Streambank Erosion Control (PDF)†, Tony Dubin, Brown and Caldwell

• Example Site Design using the IMP Sizing Calculator (PDF)†

• Contra Costa’s Experience with Low Impact Development for Stormwater Treatment and Flow Control (PDF)†, Dan Cloak, Dan Cloak Environmental Consulting