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Ank <br /> ASSOCIATES <br /> Geologists,Hydrogeologists and Engineers <br /> March 7, 2011 <br /> JN: 2010-0013 <br /> Forward Landfill <br /> 9999 South Austin Road <br /> Manteca, CA 95336 <br /> Attention: Mr. Don Litchfield <br /> RE: ASBESTOS MONITORING REPORT <br /> FORWARD LANDFILL <br /> SECOND HALF 2010 SEMIANNUAL REPORT <br /> MANTECA, CALIFORNIA <br /> INTRODUCTION <br /> Geo-Logic Associates (GLA) presents this first semiannual asbestos monitoring report <br /> for the Forward Landfill in San Joaquin County, California. Asbestos monitoring was <br /> performed in accordance with the Forward Landfill Solid Waste Facility Permit No. 39- <br /> AA-0015. Del-Tech Geotechnical Support Services (Del-Tech)performed the asbestos <br /> monitoring on December 16, 2010 in accordance with the Air Monitoring Plan provided <br /> in Appendix A. Laboratory analyses were performed by Asbestos TEM Laboratories, <br /> Inc. (ATEML) of Berkeley, California, a state certified laboratory. The analytical <br /> laboratory report and field data is presented in Appendix B. <br /> SAMPLING PROCEDURES <br /> As shown on Figure 1, five representative sampling locations were identified near the <br /> asbestos operations area. Four sampling stations were located predominately downwind <br /> and one sampling station was located predominately upwind from the asbestos disposal <br /> area. Upwind and downwind locations were chosen based on wind direction obtained <br /> from the onsite historical meteorological station. Air samples were collected <br /> simultaneously from each location over an eight-hour period during normal working <br /> hours and typical landfill operating conditions. <br /> Each sampling station consisted of a sampling pump (with a built-in rotameter), filter <br /> cassette, connective tubing, and mounting materials. Each filter used for air monitoring <br /> was a 25 millimeter diameter encased conductive cassette with a 0.45 micron mixed <br /> cellulose ester membrane. The pumps used for sampling were GilAir-5 constant flow air <br /> sampling pumps with a flow capacity of 1 to 5 liters per minute (L/min). The built-in <br /> rotameters on the GilAir-5 pumps were pre-tested (calibrated) using a dry reference <br /> standard flow meter. <br /> Sampling was conducted on December 16, 2010 and completed over an eight hour <br /> sampling period. During the sampling period, Del-Tech personnel visually checked the <br /> 16885 West Bernardo Drive, Suite 305,San Diego, California 92127 Phone: (858)451-1136 FAX: (858)451-1087 <br />