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f <br /> %jeo-L0910C <br /> As5 ® GIATES <br /> Geologists,Hydrogeologists and Engineers <br /> July 21, 2010 <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 /> FIRST HALF 2010 SEMIANNUAL REPORT <br /> FRESNO, 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 June 8, 2010 in accordance with the Air Monitoring Plan provided in <br /> Appendix A. Laboratory analyses were performed by Asbestos TEM Laboratories, Inc. <br /> (ATEML) of Berkeley, California, a state certified laboratory. The analytical laboratory <br /> 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. Sampling was performed under normal weather and operating conditions. Upwind <br /> and downwind locations were chosen based on wind direction obtained from the onsite <br /> historical meteorological station. Air samples were collected simultaneously from each <br /> location over an eight-hour period during normal working hours and typical landfill <br /> 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 micrometers mixed <br /> cellulose ester membrane. The pumps used for sampling were Gil4-ir-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 /> 16885 West Bernardo Drive,Suite 305, San Diego,California 92127 Phone:(858)451-1136 FAX:(858)451-1087 <br />