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• RECEIVE® MAR 14 2011 SAN HAZARDOUS MATERIALS BUSINESS PLAN OFFICE OF MERGENCp ER SPILL PREVENTION,EMERGENCY RESPONSE,TRAINING AND CLOSURE PLAN RVICF$ Business Name: AT&T Mobility- WALNUT GROVE(9743) 12787 Business Address: 10698 WEST BARBER ROAD,WALNUT GROVE CA 95690 In addition to the general business,chemical inventory and site map information,the SAN JOAQUIN COUNTY ENVIRONMENTAL HEALTH requires completion of the following sections pertaining to spill prevention,emergency response,employee training and site closure. These sections contain specific elements pertaining to the Hazardous Materials Business Pian,the hazardous waste contingency plan, storm water pollution prevention,and underground storage tank(UST)monitoring. SPILL PREVENTION PLAN 1. Describe how hazardous materials are handled,stored and monitored to prevent or minimize a spill or release from occurring(e.g.,secondary containment,segregation of incompatibles, daily visual monitoring). Battery systems are inspected by technician upon entry to the facility. Batteries are checked for cracks or signs of leakage Cables are checked for cracks or suns of fraying Racks are designed for this purpose and are anchored to prevent tripping or falling of cells Cells are firmly attached to racks. 2. Describe operations,activities and/or storage locations where a release is most likely to occur. Activities are limited to electronic switching and related maintenance of switch gear. Spills are most likely to happen in battery areas of site 3. Describe Best Management Practices(BMPs)you use to reduce or eliminate illicit discharge of pollutants to the storm sewer system. Battery Electrolvte:Electrolyte is contained in batterieswith-explosion-proofcases-and-batteries are--- secured in specially designed reinforced batter racks which work in conjunction with earthquake bracing, Person discovering spill will: Contact 800 KNOW FHS(800-566-9347)• keep others out of area.attempt to stop the flow of the leak-,wear protective equipment, use spill kit to absorb the leak:or call 911 4. Identify areas requiring immediate attention following an earthquake. If power is to be shut off or some equipment needs to be shut down please describe procedure,who does it and where shut off is located. Following an earthquake upon arrival to the site the technician will inspect the battery storage area for leaks and/or spills In the event of a release attempt to contain the release as described above Evacuate the area to the designated staging area located away from the equipment If necessary shut down the power to the equipment usinthe main electrical panel.The batteries are secured in specially desi ned reinforced battery racks with earthquake bracing and the racks are secured to the floor. Earthquake resistant_construction is t'm�loved in the building construction of the cell sites. Electrical transmission and telecommunication systems are designed and built to be earthquake resistant Remedial Measures are standardised bracing systems using vibration resistant equipment Standby power agpplies in the form of gel batteries are located in cabinets and are tied down to prevent movement.