Laserfiche WebLink
NPDES Monitoring Requirement 10 September 2001 <br /> Attachment N —Reporting Requirements <br /> 1. Laboratory Requirements. The laboratory analyzing the monitoring samples shall be certified by <br /> the Department of Health Services in accordance with the provisions of Water Code Section 13176 <br /> and must include quality assurance/quality control data with their reports. <br /> 2. Criterion Quantitation Limit(COL). The criterion quantitation limits will be equal to or lower <br /> than the minimum levels (MLs)in Appendix 4 of the Policyfor Implementation of Toxics <br /> Standards for Inland Surface Waters, Enclosed Bays, and Estuaries of California (Copies of the <br /> SIP may be obtained from the State Water Resources Control Board, or downloaded from <br /> htti)://www.swrcb.ca.eov/ioW/lnnal.pdf) or the detection limits for purposes of reporting(DLRs) <br /> published by the Department of Health Services <br /> fhttp://www.dhs.ca.gov/ps/ddwem/chemicals/DLR/dhindex.htm)which is below the controlling <br /> water quality criterion concentrations summarized in attachment U of this letter. <br /> 3. Method Detection Limit(MDL). The method detection limit for the laboratory shall be <br /> determined by the procedure found in 40 Code of Federal Regulations (CFR)Part 136,Appendix B <br /> (revised as of May 14, 1999). <br /> 4. Reporting Limit(RL). The reporting limit for the laboratory.This is the lowest quantifiable <br /> concentration that the laboratory can determine. Ideally,the RL should be equal to or lower than <br /> the CQL to meet the purposes of this monitoring. <br /> 5: Reporting Protocols. The results of analytical determinations for the presence of chemical <br /> constituents in a sample shall use the following reporting protocols: <br /> a. Sample results greater than or equal to the reported RL shall be reported as measured by the <br /> laboratory(i.e.,the measured chemical concentration in the sample). <br /> b. Sample results less than the report RL,but greater than or equal to the laboratory's MDL, shall <br /> be reported as "Detected,but Not Quantified,"or DNQ. The estimated chemical concentration <br /> of the sample shall also be reported. <br /> c. For the purposes of data collection,the laboratory shall write the estimated chemical <br /> concentration next to DNQ as well as the words"Estimated Concentration" (may be shortened <br /> to"Est. Conc."). The laboratory, if such information is available,may include numerical <br /> estimates of the data quantity for the reported result. Numerical estimates of data quality may <br /> be percent accuracy(f a percentage of the reported value),numerical ranges (low to high), or <br /> any other means considered appropriate by the laboratory. <br /> d. Sample results that are less than the laboratory's MDL shall be reported as `Not Detected"or <br /> ND. <br /> 6. Data Format. The monitoring report shall contain the following information for each pollutant: <br /> a. The name of the constituent. <br /> b. Sampling location. <br /> c. The date the sample was collected. <br /> d. The time the sample was collected. <br /> 1 of 3 <br />