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ANDERSON <br /> GEOTECHNICAL <br /> NEIL O. ANDERSON ENVIRONMENTAL <br /> ' AN D ASSOCIATES INSPECTIONS & TESTING <br /> LABORATORY SERVICES <br /> POOL ENGINEERING <br /> POST TENSION DESIGN <br /> ' May 3, 2006 <br /> NOA Project Number: E06041A <br /> OPERATION & MANAGEMENT PLAN <br /> 3442 FRENCH CAMP TURNPIKE <br /> STOCKTON, CALIFORNIA <br /> 1 1.0 INTRODUCTION <br /> ' NEIL O.ANDERSON&ASSOCIATES,INC.(NOA)has prepared this Operation and Management <br /> Plan (O&M Plan) for the residence located at 4332 French Camp Turnpike,Stockton,California. The <br /> residence is within 1,000 feet of the boundary of a disposal area. This residence is designed with a <br /> ' passive methane gas mitigation system located below the floor slab with a vent to the outside,along with <br /> three methane gas senors. <br /> 2.0 POLICY <br /> • The methane mitigation system will need to be maintained and operated in a manner that <br /> assures compliance with regulatory agencies. <br /> ' Residents shall be instructed and trained on how to monitor the readings and what to do in case <br /> of an alarm. Practice a home exit plan with the residences (Section 7.0). <br /> ' A copy of this O&M plan shall be available for all residents and owners of the property. <br /> Residents shall be familiar with its contents and will be trained in operating the system. <br /> • In case of a problem with the system, appropriate corrective actions need to be conducted <br /> immediately. <br /> ' 3.0 DESCRIPTION OF SYSTEM OPERATION <br /> The passive methane mitigation system allows any build up of gases beneath the slab floor to be vented <br /> to the atmosphere and to act as a barrier between the subfloor and the living space. Gas enters the <br /> horizontal pipes located beneath the slab, and travels up the vent, and exits out the pipe protruding <br /> from the roof of the residence. One sensor is located within the vent to detect any methane gas <br /> ' migration up the vent. Two additional sensors are located in the residence to detect any possible <br /> buildup of methane in the residence. <br /> LODI ■ SACRAMENTO ■ MODESTO <br /> ENVIRONMENTAL DIVISION 902 Industrial Way,Lodi,California 95240 0 209.367.3701 ■ 209.369.4228 fax 0 www.noanderson.com <br />