1. Pacific Gas and Electric Company
Napa Tree Advisory Commission
November 16, 2016

2. Valve Automation Project

3. Stanly Lane Operational and Safety Drivers
Valve Automation
Automatic and remote control shut-off valves improve PG&E’s ability to quickly turn off the flow of gas in the event of a significant change in pressure by isolating segments of our pipeline remotely
The Valve Automation program also enhances electronic monitoring of our gas system to identify and locate operational issues quickly
Remote controlled valves can be opened or closed with the push of a button from PG&E’s state-of-the-art gas control center in San Ramon
In-line Inspection
In-Line-Inspections (ILI) determines the thickness of a pipe’s remaining wall and, with some newer technologies, improves the ability to locate and assess cracks and other potential weaknesses.
A “Pig” travels inside the pipe to measure and record irregularities that may indicate corrosion, cracks, laminations, deformations (dents, gouges, etc.) or other defects; Some “pigs” use high-resolution video to assess the internal condition of the pipeline, its welds and components, such as valve seals

4. Scope of Work
As part of this valve automation project, PG&E will be removing 16 Eucalyptus trees and grinding all of tree stumps
Additionally, we will grind 12 additional tree stumps located in the project area

5. Proposed Restoration Tree Removal Overview Proposed Vegetation
Unacceptable risk trees to be removed
Note: The visible tree line will not be interrupted as the Eucalyptus to the immediate west of San Francisco Bay trail provides continuous visual tree line
Proposed Vegetation
California Buckwheat
(Eriogonum fasciculatum)
Coast Live Oak
(Quercus agrifolia)
Silk Tassel
(Garrya elliptica)
Sticky Monkey Flower
(Mimulus aurantiacus)

6. Proposed Restoration Existing Proposed Vegetation Proposed
Silk Tassel
Proposed Vegetation
Proposed
Note: The proposed restoration represents the vegetation at full maturity.

7. Proposed Restoration Existing Proposed Vegetation Proposed
Silk Tassel
Proposed Vegetation
Coast Live Oak
Proposed
Note: The proposed restoration represents the vegetation at full maturity.

8. Proposed Restoration Existing Proposed Vegetation Proposed
California Buckwheat
Proposed
Sticky Monkey Flower
Note: The proposed restoration represents the vegetation at full maturity.

9. Community Pipeline Safety Initiative

10. Working with the City of Napa
Present data to the Napa Tree Advisory Commission
MAR.
3, 2016
Meet with City Staff to introduce the program
APR.
13, 2016
Begin outreach to private property owners
25, 2016
Conduct Site-walk with Consulting Arborist to review franchise trees
SEPT.
20, 2016
Meet with Parks, Trees and Facilities Manager to discuss mitigation
NOV.
2, 2016
Present Stage 1 information to the
Napa Tree Advisory Commission for approval
16, 2016

11. Program at a Glance WHAT WE’RE DOING
Checking the area above the gas transmission pipeline for trees and structures that pose an emergency access or safety concern
Helping to ensure immediate access for first responders, and preventing potential damage to the pipe
Working with our customers and communities where a safety risk has been identified to develop shared solutions
Planting new trees at a safe distance from the pipeline and restoring the area to preserve the natural beauty of our communities

12. Guide to Safe Landscaping
Making sure the right plants and trees are located in the right location adds to the safety and natural beauty of your community

13. Tree-by-Tree Review
To help ensure we are only replacing trees that pose a safety concern, we conducted an in- depth review of every tree within 14 feet of the pipeline. The review involves:
Analyzing specific vegetation and pipeline data, such as the height and species of a tree and the age and coating of the pipeline
Determining if a tree is a manageable risk and can potentially remain with regular monitoring, or an unacceptable risk and must be replaced
We also work with a team of certified arborists to help minimize the impacts on vegetation, trees and wildlife habitat
Every project and site is individually reviewed by a team made up of biology, cultural and environmental field specialists

14. Proposed Path Forward
Working together with city staff, we have developed a plan for addressing the 192 unacceptable risk city-owned/franchise trees in two stages
The first stage entails addressing 120 trees, including:
Species: 33 species including Chinese Pistache, Coast Live Oak, Crape Myrtle, Ornamental Pear, Cypress, and Privet
Condition: 24 trees identified as dead/dying or in poor condition
Diameter at Breast Height (DBH) Range: 0-28” (60% less than 6” DBH)
Locations: Along Solano Avenue, Byway East, Stanly Lane, 1st Street, Trower Avenue, and Jefferson Avenue
We look to the Tree Advisory Commission for direction on mitigation for the first stage of this work
We will continue to evaluate the remaining trees and coordinate with the City to develop a path forward

15. Community Partnership and Outreach
It is important to us that our customers get answers to their questions and support this critical safety work
Our outreach includes:
Meeting with city officials and staff to discuss the safety risks and work together to plan for gas safety work in public areas
Communicating about gas pipeline safety to all residents within 500-feet of the safety work
Notifying nearby residents before any safety work takes place
Hosting answer centers near work areas
Contacting private property owners regarding any safety work proposed for their property
We will not move forward with any planned work until we have a signed agreement in place with the customer.
As of today, we have reached agreements with over 90% of the property owners in Napa

16. Tree Notification
Prior to any work taking place, we will also post a notification on each tree proposed for removal that includes the following:
Scheduled date for work to begin
Reason for removal
What to expect (i.e. trucks parked in the area)
Resources for additional information on PG&E’s gas safety efforts

17. Restoration Options
Option 1: Restoration within the Pipe Safety Zone; This includes low-lying plants and shrubs such as flower beds, lawns, grasses, and mosses
(Example: Fremont)
Proposed
Existing

18. Restoration Options
Option 2: Restoration within the Border Zone and Outer Zone; This includes planting trees and shrubs along sidewalks or medians
(Examples: Sunnyvale and Rancho Cordova)
Proposed
Proposed

19. Restoration Options
Option 3: Other Restoration Opportunities; This includes coordinating with the city on other beautification efforts
(Example: Berkeley)
Existing
Proposed

20. KMZ Review

21. Contact Information
For questions regarding the upcoming pipeline safety work, please contact Greg Gillis, Local Customer Outreach Specialist, at or by at
For more information, visit us at pge.com/GasSafety
To view an online map of our natural gas transmission pipelines, please go to pge.com/pipelinelocations

22. Thank You