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E <br /> 1 o <br /> I <br /> CALIFORNIA REGIONAL WATER QUALITY.CONTROL BOARD <br />' CENTRAL VALLEY REGION <br /> I� <br /> MONITORING AND REPORTING PROGRAM NO. <br /> FOR <br /> KNIFE RIVER CORPORATION DBA KRC AGGREGATES <br /> AGGREGATE MINE AND WASTEWATER SYSTEM } <br /> SAN JOAQUIN COUNTY f <br /> This Monitoring and Reporting Program (MRP) describes requirements for monitoring industrial <br /> wastewater. This MRP is issued pursuant to Water Code Section 13267. The Discharger shall not <br /> implement any changes to this MRP unless and until a revised MRP is issued by the Executive Officer. <br /> Specific sample station locations shall be approved by Regional Board staff prior to implementation of <br /> sampling activities. <br /> All samples should be representative of the volume and nature of the discharge or matrix o material <br /> sampled. The.time, date, and location of each grab sample shall be recorded on the sample chain of <br /> custody form. <br /> FREEBOARD MONITORING <br /> All storinwater and process water ponds shall be inspected weekly and freeboard determined. <br /> Sampling Reporting <br /> Constituents Units Type of Sample Frequencx _Frequency <br /> Freeboard Feet Measurement Weekly Monthly <br /> EFFLUENT MONITORING <br /> Wastewater effluent samples shall be collected at the influent to the first.settling pond. Grab samples <br /> are considered adequately composited to represent the effluent. Monitoring for individual parameters <br /> is required based on the site activities. Sample locations shall be established as necessary to determine <br /> effluent quality at all potential source areas. <br /> Constituents Sampling Reporting ' <br /> Units Tyke_of Sample 1 <br /> Frequency Frequency <br /> Total Flow' gpd Cumulative Daily Monthly <br /> Total Dissolved Solids Z mg/1 Grab Monthly Monthly <br /> PHa'3 Std. Grab Monthly Monthly <br /> Total Petroleum Hydrocarbons 3'4 mg/l. Grab Monthly Monthly'- <br /> '- <br /> Flow monitoring is required by 21 September 2001. <br /> 2 Monitoring only required when flocculent is added to wastewater or when a concrete plant is in operation. <br /> 3 Monitoring only required when asphalt plant in operation.. <br /> TPH shall be performed by EPA Method 8015-m for diesel range hydrocarbons. <br /> REPORTING <br /> In reporting monitoring data, the Discharger shall arrange the data in tabular form so that the date, <br /> sample type (e.g., effluent,pond, etc.), and reported analytical result for each sample are readily <br /> discernible. The data shall be summarized in such a manner to clearly illustrate compliance with waste i <br /> IIS <br />