J_2024 05 09_West Orange Stormwater Management Plan

PSE&G West Orange Switching Station West Orange, NJ Stormwater Management Report Section I: Introduction 1. Scope of Report The purpose of this report is to present the drainage analysis and erosion and sediment control plan for the proposed West Orange Switching Station expansion project located in the Township of West Orange, Essex County, New Jersey. The project will result in a total disturbance of approximately 10.3 acres, including construction laydown, and a net decrease in impervious surface area of approximately 0.36 acres when the proposed buildings, foundations, paved roads, and gravel road areas are included. The proposed project will require compliance with the stormwater quality requirements of the NJDEP Stormwater Regulations. Note that the proposed secondary containment areas for new transformers are considered non-contributory areas. This documentation is provided for review by the approving agencies. Section II: Project Information 1. Project Description Public Service Electric and Gas Company (PSE&G) is proposing to expand the West Orange Switching Station to increase transmission system reliability and to provide electrical service enhancements to address anticipated regional customer loads. The proposed expansion at the West Orange Switching Station will allow for station operation at 230 kV, rather than at 138 kV under its current configuration. This will include replacing the existing 138kV equipment with a new three bay breaker and a 230kV switching station. This includes installing three 230kV line positions to replace the S1319, T-1320 and Y-1351 lines, three 230/1 l/26kV LTC transformers, three 3000A line disconnect switches, eleven 230kV dead-tank circuit breakers, twenty 4000A breaker disconnect switches, seven 3000A transformer/cable/capacitor disconnect switches, and a new 230kV-150MVAR capacitor bank with three Live Tank Circuit Breakers. The 230kV equipment will be installed in an area within the existing property fence. The 26kV Bus connections from the new transformers will connect with the existing 26kV bus. The station service will consist of two new 750kVA station service transformers fed from the 1 lkV tertiary of transformers T4 & T3, two main breakers and one tie breaker and one new 750 kW generator. New line relay protection, bus protection, transformer protection, capacitor protection and breaker failure

of transformers T4 & T3, two main breakers and one tie breaker and one new 750 kW generator. New line relay protection, bus protection, transformer protection, capacitor protection and breaker failure relaying will be installed in a new control house for the 230kV Switching Station will be installed. The existing 138kV line positions and associated equipment will be removed. Existing primary, secondary and breaker failure relay panels will be removed. A USGS location map of the site and surrounding area is included as Figure 1 and an aerial photograph of the Project vicinity illustrating the existing switching station and proposed switching station expansion area is included as Figure 2. The property borders Mount Pleasant Avenue to the north, Prospect Avenue to the west, and an office building parking lot to the east. It is currently accessible via a main access road off Mount TRC Engineers, Inc. I March 2012