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Foothill Landfill Monitoring Implementation Plan MIP Page 18 The RWQCB requires the results of WDR storm water monitoring to be summarized in the monitoring reports specified by the Order. If there is no discharge from the site during the monitoring period, or the County did not obtain samples of the discharge, the County is required to specify the reasons and circumstances in the monitoring report. 4.2 Sample Procedures In order to provide effective sample management, San Joaquin County uses the following sample management procedures that are derived from federal and state hazardous waste regulations and guidance materials. Appendix F provides a summary of sampling procedures. 4.2.1 Sample Preservation and Storage Sample preservation is dependent on the specific analyses that are to be performed. Each sample is to be collected in sample containers provided by the laboratory. The required analyses call for different preservation techniques. For example, the pH of the samples taken for the Oil and Grease analysis must be lowered to less than 2 with sulfuric acid (H2SO4). For some parameters, such as TSS, the only preservation technique required is refrigeration. The laboratory provides the proper containers with the appropriate preservatives already added to the containers. Measurement of pH may be field-tested; performed by the sampler, using a calibrated pH meter or (if still at Baseline status, and never having reached Level 1 Status) litmus paper. A summary of preservation techniques is included in Appendix B, including Analytical methods, holding times, and annual and instantaneous NALs. Sample storage is an integral part of the sample preservation. The samples are to be stored until they are transported to the laboratory at a temperature of 4 degrees Celsius either in a refrigerator or on ice in a cooler. A summary of storage temperatures is also included in Appendix B. 4.2.2 Sample Labels Each sample is labeled with labels provided by the laboratory and contains the following information: • Facility Name • Sample Point as follows: “ST-2” • Initials of Sampling Personnel • Date and time of collection • Preservative present in container (i.e. “Hydrochloric Acid” or “HCl”) 4.2.3 Sample Log / Sample Collection Information General sampling information is recorded on the Chain of Custody at the time of sampling in sufficient detail so that such information can be readily available. • Facility Name • Sample Point/Location (i.e. ST-2) • Signature and Printed Name of Person Responsible for Sampling