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<br />6280 San Ignacio, Suite P • San Jose, California 95119-1363 • Tel: 408.281.2322 • Fax: 408.281.2722 • www.fieldsolutionsinc.com <br /> <br />MAY 21, 2018 <br />PROJECT 672.07.01 <br /> <br />MR. JOSEPH LIPKA <br />FORWARD LANDFILL <br />9999 SOUTH AUSTIN ROAD <br />MANTECA, CALIFORNIA 95336 <br /> <br />RE: AMBIENT AIR ASBESTOS MONITORING RESULTS, FORWARD LANDFILL, <br />MANTECA, CALIFORNIA <br />Dear Mr. Lipka: <br />The results of the April 2018 asbestos air monitoring program at the Forward Landfill in San <br />Joaquin County are presented in this report. The purpose of this program was to measure fibers <br />at predominant upwind and downwind monitoring locations at the Forward Landfill to comply <br />with the requirements of Solid Waste Facility Permit (SWFP) No. 39-AA-0015. Monitoring of <br />the non-friable asbestos disposal area at the site is completed semiannually to comply with this <br />SWFP permit condition. Sample collection was performed by Del-Tech Geotechnical Support <br />Services (Del-Tech) on April 20, 2018. Laboratory analysis was completed by Asbestos TEM <br />Laboratories (ATEML) of Berkeley, California. ATEML is accredited for airborne asbestos <br />fiber analysis through the National Voluntary Laboratory Accreditation Program (NVLAP). <br />Sampling and analysis procedures are described below along with the monitoring results for the <br />April 2017 program. <br />SAMPLING AND ANALYSIS PROCEDURES <br />Samples were collected on April 20, 2018 over an eight hour sampling period from five locations <br />on the perimeter of the non-friable asbestos disposal area. Four samples were collected from <br />monitoring locations on the predominant downwind side of the disposal area and one sample <br />from the prevailing upwind side of the disposal area. The April 20, 2018 sampling locations are <br />shown on the attached site map. Sampling procedures used during the April 2018 program <br />followed those described in Appendix A. <br />Fiber samples were collected on mixed cellulose ester filter cassettes using battery-powered air <br />sampling pumps. Each pump was placed at the designated monitoring location within the <br />disposal area fence line and connected using a small diameter plastic hose to the filter at <br />approximate breathing zone height (2 meters above ground surface). The air sampling pumps <br />were calibrated before and after sampling using an electronic bubble flow meter or a rotometer. <br />The start and end times for each sampler were recorded and used to calculate the total amount of <br />air sampled.