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

Valve Automation Project

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

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

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)

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

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

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

Community Pipeline Safety Initiative

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

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

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

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

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

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

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

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

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

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

KMZ Review

Contact Information For questions regarding the upcoming pipeline safety work, please contact Greg Gillis, Local Customer Outreach Specialist, at 1-415-815-7286 or by email at greg.gillis@pge.com 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

Thank You