SITE INFORMATION AND CORRESPONDENCE

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PG&E— Projects R-838, 1-433, and S-494 -2 - General Order 2003-0003-DWQ-0182 30 October 2017 PROJECT DESCRIPTION The three PG&E projects are described below. Retirement Project R-838 Project R-838 includes retiring approximately 4,000 feet of natural gas pipeline. The pipeline segment to be retired will be accessed by excavation holes at the western and eastern end of the alignment and at one intermediate location to isolate the pipeline for deactivation. The project is scheduled to begin mid-October 2017 and take approximately 1.5 to 2 months to complete. In-Line Inspection Project 1-433. The 1-433 project includes excavations to expose the existing natural gas pipeline segment at two entry locations. An inspection of a 0.189-mile portion of the 16-inch line will be conducted. The project is scheduled to begin in February 2018 and take approximately 2 months to complete. Station Proiect S-494 The S-494 station project includes excavation to remove and replace various parts of Line 8-57. The project is scheduled to begin in the next few weeks and will take approximately 2 months to complete. Dewatering of the excavations will be performed using in-pit submersible pumps as needed. The water will be consolidated in fractional tanks staged within the temporary construction easements for each project and/or the two staging areas shown on Attachment A. The water will be transferred via water trailers or trucks to the tank/filtration staging area at the LAA. PG&E will be responsible for the filtering and applying the water via sprinklers and/or gated irrigation pipes with the LAA in accordance with best management practices. PG&E conducted an environmental project assessment of excavation locations to evaluate the potential for groundwater and/or soil contamination. Based on Geotracker and Envirostor database searches, there are no sites of potential environmental concern within 1,000 feet of Project 1-433. Portions of R-838 and S-494 are within soil and groundwater contaminated sites. R-838 is located near a total petroleum hydrocarbon as gasoline soil site that was closed by the Water Quality Control Board in 1996 with no further action. Portions of S-494 are near the PG&E McDonald Compressor Station, an open Cleanup Program site, where total petroleum hydrocarbons as diesel were reported in groundwater samples. Prior to discharge,water samples will be collected from each project excavation or from consolidated water in tanks at the staging area and the results will be compared to Maximum Contaminant Levels (MCLS), the Basin Plan, and agricultural water quality goals. Extracted groundwater that does not meet these requirements will be trucked offsite for disposal at an approved disposal facility and will be not used for general irrigation. Based on the results of the water samples, water quality that meets the criteria for discharge will be discharged to agricultural land owned by PG&E and leased to Zuckerman-Heritage, Inc. (APN 129-080-09). The discharge will occur with permission from the lessee. Over the course of construction for the three projects, an estimated total volume up to 1.5 million gallons may be discharged. Discharge water will be applied via sprinklers, gated irrigation, or in another manner requested by the lessee. Discharges will be monitored and controlled in accordance with the General Order and best management practices to prevent runoff, nuisance conditions, and erosion.