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12803309 2.2.4 Methods The PM10 monitoring was conducted in accordance with Method P (found in 17 CCR, Subarticle 9, Appendix B). ' Visual observations concerning dust levels were also noted during the times the CIH Services professional was on site. Wind direction and wind speed were also monitored. 2.3 Vibration Monitoring 2.3.1 Applicable Regulations According to LEA Conditions provided in the permit for the MRF, the ' operator will monitor vibration to verify compliance with State minimum standards. There is no State standard for vibration, however San Joaquin County Development Code, Title 9, Section 9-1025.5 does have a standard for vibration. 2.3.2 Monitoring Locations ' The location of the vibration monitor was north of the MRF along the property line (see Figure 3 of Appendix A). The property line is approximately 35 feet from the MRF at this location. 2.3.3 Monitoring Times The 24-hour samples were collect twice over a 30 day period. 2.3.4 Monitoring Methods A Thomas Instruments VMS-200S seismograph was used to monitor vibration. The motion sensor of the seismograph was firmly planted into the soil along property line. The seismograph's data logger recorded 1 information for 1 minute whenever vibration velocity exceeded the 0.02 in/sec trigger level. This was most sensitive trigger level for this instrument. 1 2.4 Meteorological Monitoring g Data from a local weather monitoring station in Lodi was used to determine wind speed, wind direction, temperature, and barometric pressure. A meteorological station was also operated on site during both monitoring events as a backup to the Lodi site. The station was located south of the truck maintenance facility (see Figure 1 in Appendix ' Noise,Particulate,and Vibration Report WM-CVWS Project 128-03 Page 4 October 30,2002