Laserfiche WebLink
. 1 <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTNG PROGRAM NO. 5-00-226 <br /> FOR <br /> COUNTY OF SAN JOAQUIN DEPT. OF PUBLIC WORKS <br /> COUNTY SERVICE AREA NO. 44 <br /> CASTELLO ESTATES AKA APRICOT ACRES <br /> SAN JOAQUIN COUNTY <br /> This Monitoring and Reporting Program (MRP) describes requirements for monitoring domestic <br /> wastewater effluent and groundwater. This MRP is issued pursuant to Water Code Section 13267. <br /> The Discharger shall not implement any changes to this MRP unless and until a revised MRP is issued <br /> by the Executive Officer. Specific sample station locations shall be approved by Regional Board staff <br /> prior to implementation of sampling activities. <br /> All samples should be representative of the volume and nature of the discharge or matrix of material <br /> sampled. The time, date, and location of each grab sample shall be recorded on the sample chain of <br /> custody form. <br /> EFFLUENT MONITORING <br /> Wastewater effluent samples shall be collected at the outlet of the treatment system before discharge to <br /> the disposal area. Grab samples are considered adequately composited to represent the effluent. <br /> Effluent monitoring shall include, at a minimum, the following: - <br /> Constituents Units Tvoe of Sample Sampling Reporting <br /> Frequencv Frequency <br /> Flow gpd Continuous Daily Monthly <br /> BODS mg/1 Grab Monthly Monthly <br /> Total Settleable Solids ml/1-hr Grab Monthly Monthly <br /> Nitrates as Nitrogen mg/l Grab Monthly Monthly <br /> Ammonia as Nitrogen mg/1 Grab Monthly Monthly <br /> pH S.U. Grab Monthly Monthly <br /> Total Coliform NPN/100 ml Grab Monthly Monthly <br /> Total Dissolved Solids m--/l Grab Monthly Monthly <br /> GROUNDWATER MONITORING <br /> Prior to sampling, the groundwater elevations shall be measured and the wells shall be purged at least <br /> three well volumes until pH and electrical conductivity have stabilized. Depth to groundwater shall be <br /> measured to the nearest 0.01 feet. Sample collection shall follow standard EPA protocols. Groundwater <br /> monitoring shall include, at a minimum, the following: <br /> Sampling Reporting <br /> Constituent Units Type of Sample Freauencv Freauencv <br /> Groundwater elevation feet Measurement Quarterly Quarterly <br /> pH S.U. Grab Quarterly Quarterly <br /> Total Dissolved Solids mg/l Grab Quarterly Quarterly <br /> Nitrate as Nitrogen mg/l Grab Quarterly Quarterly <br />