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F <br /> a <br /> ROUTINE MONITORING PROCEDURES <br /> Section 2632(d)(1)Title 23 CCR,Chapter 16 <br /> UNDERGROUND FUEL. STORAGE TANK <br /> Facility Name: Pacific Bell dba AT&T (SKTNCA01 UE042) <br /> Facility Address: 345 N SAN JOAQUIN ST STOCKTON <br /> Telephone: 209-468-0010 <br /> Tank Owner Name: Pacific Bell <br /> Tank Owner Address: 2600 Camino Ramon Room 3E000 San Ramon, CA 94583 <br /> Telephone: 800-757-6575 <br /> UST Installed: 25,000-gallon double wall composite tank Containing Diesel Fuel for the <br /> Emergency Generator. <br /> Piping Installed: Double Wall "Western Fiberglass"non-metallic flexible piping system for the <br /> product supply and return lines. <br /> A. The Frequency of Performing the Monitoring: <br /> Monitoring is performed continuously on the: <br /> • Double wall UST Interstitial space and its two sumps. <br /> • Monthly inspections of the TLS panel will be performed by AT&T personnel to ensure <br /> proper operation. <br /> • Monthly inspections of the aboveground fuel piping will be performed by AT&T <br /> personnel to ensure proper operation. <br /> • Enhanced Leak Detection(ELD)testing will be performed to ensure the system integrity. <br /> ELD will be performed thereafter every three years,not to exceed 36 months from <br /> the initial test. <br /> B. The methods and equipment used to perform continuous monitoring are: <br /> • VEEDER ROOT Fuel Tank Monitoring System Model#TLS-350 with CSLD <br /> • Internal site-fax modem with printer <br /> • 0.1 GPH magnetostrictive in-tank volumetric probe Model # 847390-108 <br /> • Floating liquid sensors in the: <br /> 1. UST Interstitial space sensor Model# 794390-420 <br /> 2. Piping sump sensor Model # 794380-322 <br /> 3. Fill sump sensor Model# 794380-352 <br /> • Electronic Tank Overfill Alarm Model#790091-001 <br /> 1AHAZMATTACBELLPORWAT&T Monitor Plan Merge.doc <br /> Printed: July 29,2006 page 2 <br />