| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | administrative | operational | mandatory | Prohibition of Unauthorized Discharge | wastewater, agricultural water, other | The discharge of biosolids is prohibited unless the discharger has submitted an NOI, filing fee, and a pre-application report and in response to these submittals, the RWQCB has issued a Notice of Applicability, individual WDRs, or a waiver of WDRs for the discharge. | Unless NOI, filing fee, and pre-application report are submitted and Notice of Applicability/WDRs/waiver issued | high |
| #Q002 | operational | operational | mandatory | Confinement to Designated Areas | wastewater, agricultural water | Applications of biosolids shall be confined to the designated use areas stated and shown in the NOI and pre-application report. | high | |
| #Q003 | prohibition | aesthetic | mandatory | Prevention of Nuisance | wastewater, agricultural water | The storage, transport, or application of biosolids shall not cause a nuisance, as defined in CWC section 13050. | high | |
| #Q004 | prohibition | operational | mandatory | Prohibition of Discharge to Adjacent Lands or Waters | wastewater, agricultural water | There shall be no discharge of biosolids from the storage or application areas to adjacent land areas not regulated by this General Order, to surface waters, or to surface water drainage courses. | high | |
| #Q005 | prohibition | health | mandatory | Hazardous Waste Application Prohibition | wastewater, agricultural water | The application of 'hazardous waste,' as defined in Chapter 11, Division 4.5, Title 22 of the CCR, is prohibited. | high | |
| #Q006 | prohibition | operational | mandatory | Weather-Related Application Prohibition | wastewater, agricultural water | The application of biosolids to water-saturated or frozen ground or during periods of precipitation that induces runoff from the permitted site is prohibited. | During water-saturated/frozen ground conditions or precipitation inducing runoff | high |
| #Q007 | prohibition | operational | mandatory | Erosion Area Application Prohibition | wastewater, agricultural water | The application of biosolids in areas where biosolids are subject to gully erosion or washout off site is prohibited. | high | |
| #Q008 | treatment | health | mandatory | Vector Attraction Reduction Compliance | wastewater, agricultural water | All biosolids subject to this order shall comply with one of the applicable vector attraction reduction requirements specified in 40 CFR Part 503.33. | high | |
| #Q009 | operational | operational | mandatory | Biosolids Soil Incorporation | wastewater, agricultural water | If biosolids are applied to a site where the soil will be tilled, biosolids shall be incorporated within 24 hours after application in arid areas and in nonarid areas during the time period beginning May 1 and ending October 31 and within 48 hours in non-arid areas during the remaining time period. | If applied to a site where soil will be tilled | high |
| #Q010 | design | operational | mandatory | Tail Water Structure Design and Maintenance | wastewater, agricultural water | Structures conveying tail water shall be designed and maintained to minimize any field erosion. | high | |
| #Q011 | operational | operational | mandatory | Tail Water Structure Protection | wastewater, agricultural water | Tail water structures shall be boarded and wrapped with plastic prior to any biosolids application but removed after biosolids incorporation into the soil. | high | |
| #Q012 | operational | health | recommended | Radioactivity Management Recommendations | wastewater, agricultural water | Operators that produce land applied biosolids are to follow the recommendations contained in ISCORS's November 2003 draft report entitled 'Assessment of Radioactivity in Sewage Sludge: Recommendations on Management of Radioactive Materials in Sewage Sludge and Ash in Publicly Owned Treatment Works' (ISCORS Technical Report 2003-04), for screening, identification, and consultation. | high | |
| #Q013 | prohibition | operational | mandatory | Prohibition of Ground Placement with Free Liquids | wastewater, agricultural water | Biosolids containing free liquids shall not be placed on the ground prior to application on an approved site, excluding equipment cleaning operations. | Prior to application on an approved site | high |
| #Q014 | design | health | mandatory | Class B Storage Public Access Restriction | wastewater, agricultural water | Sites for the storage of Class B biosolids shall be located, designed, and maintained to restrict public access to the biosolids. | Applicable for Class B biosolids storage | high |
| #Q015 | operational | operational | mandatory | Biosolids Covering Requirement | wastewater, agricultural water | Biosolids placed on site for more than 24 hours shall be covered. | If placed on site for more than 24 hours | high |
| #Q016 | design | operational | mandatory | Storage Facility Leachate and Erosion Control | wastewater, agricultural water | Biosolids storage facilities shall be designed, maintained, and operated to minimize the generation of leachate and the effects of erosion. | high | |
| #Q017 | operational | operational | mandatory | Operation in Accordance with Storage Plan | wastewater, agricultural water | The discharger shall operate the biosolids storage facilities in accordance with the approved biosolids storage plan. | high | |
| #Q018 | corrective_action | operational | mandatory | Removal of Violating Biosolids | wastewater, agricultural water | The discharger shall immediately remove and relocate any biosolids stored or applied on site in violation of this General Order. | Upon violation of the General Order | high |
| #Q019 | operational | operational | mandatory | Transportation Vehicle Requirements | wastewater, agricultural water | All biosolids shall be transported in covered vehicles capable of containing the designated load. | high | |
| #Q020 | operational | operational | mandatory | Leak Proof Vehicles for Wet Biosolids | wastewater, agricultural water | All biosolids having a water content that is capable of leaching liquids shall be transported in leak proof vehicles. | When biosolids water content is capable of leaching liquids | high |
| #Q021 | operational | operational | mandatory | Transport Driver Training | wastewater, agricultural water | Each biosolids transport driver shall be trained as to the nature of its load and the proper response to accidents or spill events and shall carry a copy of an approved spill response plan. | high | |
| #Q022 | operational | operational | mandatory | Avoidance of Residential Haul Routes | wastewater, agricultural water | The discharger shall avoid the use of haul routes near residential land uses to the extent possible. If the use of haul routes near residential land uses cannot be avoided, the discharger shall limit project-related truck traffic to daylight hours. | high | |
| #Q023 | monitoring | operational | mandatory | Pre-Application Ground Water Monitoring Program | wastewater, agricultural water | Where ground water monitoring is required, as specified by the RWQCB Executive Officer or as contained in Monitoring and Reporting Program, the ground water monitoring program must be in place prior to any application of biosolids. | Where ground water monitoring is required | high |
| #Q024 | administrative | unknown | mandatory | Cultural Resources Investigation | other | A cultural resources investigation shall be conducted before any disturbance of land that has not been disturbed previously. | Before disturbance of previously undisturbed land | high |
| #Q025 | reporting | reporting | mandatory | Information Submission Correction | wastewater, agricultural water | Where the discharger becomes aware that it failed to submit any relevant facts in a NOI or submitted incorrect information in a NOI or in any report to the RWQCB, it shall promptly submit such facts or information. | Upon becoming aware of omitted or incorrect submitted facts | high |
| #Q026 | administrative | operational | mandatory | Informing Associated Personnel | wastewater, agricultural water | The discharger shall be responsible for informing all biosolids transporters, appliers, and growers using the site of the conditions contained in this General Order. | high | |
| #Q027 | operational | operational | mandatory | Operation and Maintenance Responsibilities | wastewater, agricultural water | The discharger at all times shall properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the discharger to achieve compliance with conditions of this General Order. | high | |
| #Q028 | monitoring | operational | mandatory | Maintenance and Calibration of Monitoring Instruments | wastewater, agricultural water | All monitoring instruments and devices used by the discharger to fulfill the prescribed monitoring program shall be properly maintained and calibrated as necessary to ensure their continued accuracy. | high | |
| #Q029 | monitoring | operational | mandatory | Certified Laboratory Utilization | wastewater, agricultural water | Unless otherwise permitted by the RWQCB Executive Officer, all analyses shall be conducted at a laboratory certified for such analyses by the California Department of Health Services. | Unless permitted otherwise by RWQCB | high |
| #Q030 | reporting | health | mandatory | Reporting Endangerment to Health or Environment | wastewater, agricultural water | The discharger shall report any noncompliance which may endanger human health or the environment. Any such information shall be provided orally to the RWQCB Executive Officer within 24 hours from the time the discharger becomes aware of the circumstances. A written submission shall also be provided within five days of the time the discharger becomes aware of the circumstances. | Upon noncompliance endangering health or environment | high |
| #Q031 | reporting | reporting | mandatory | Retention of Monitoring Records | wastewater, agricultural water | The discharger shall retain records of all monitoring information including all calibration and maintenance records for on-site monitoring equipment (if applicable), copies of all reports required by this General Order, and records of all data used to complete the application for this General Order. Records shall be maintained for a minimum of three years from the date of the sample, measurement, report, or application. | high | |
| #Q032 | monitoring | operational | mandatory | Sample Collection and Preservation Procedures | wastewater, agricultural water | The collection, preservation and holding times of all samples shall be in accordance with U.S. Environmental Protection Agency approved procedures. | high | |
| #Q033 | reporting | reporting | mandatory | No Discharge Reporting | wastewater, agricultural water | If there is no discharge during a required reporting period, the discharger shall submit a letter report to the RWQCB indicating that there has been no activity during the required reporting period. | If there is no discharge during reporting period | high |
| #Q034 | reporting | operational | mandatory | Discharger Data Responsibility | wastewater, aquatic life | It is the discharger's responsibility to provide all data and other information requested by the RWQCB before the issuance, reissuance, or modification of a permit to the extent feasible. | Before permit issuance, reissuance, or modification | high |
| #Q035 | design | operational | mandatory | End-of-Pipe Effluent Limit Application | wastewater | Effluent limitations shall apply to the total effluent of a waste discharge at the end-of-pipe, except in the rare situations where it is impractical or infeasible | Unless impractical or infeasible (e.g., inaccessible final discharge point) | high |
| #Q036 | reporting | operational | mandatory | Site-Specific Metal Translator Study Commitment | aquatic life, wastewater | The discharger, in the permit application, (1) commits to (a) completing a defensible site-specific translator study and (b) proposing a dissolved to total recoverable translator to the RWQCB, and (2) describes the method(s) to be used in developing the translator | If opting for site-specific metal translators instead of US EPA conversion factors | high |
| #Q037 | prohibition | health | mandatory | Mixing Zone Prohibitions | aquatic life, drinking water | A mixing zone shall not: (1) compromise the integrity of the entire water body; (2) cause acutely toxic conditions to aquatic life... (11) be allowed at or near any drinking water intake. | high | |
| #Q038 | administrative | operational | mandatory | Intake Water Credit Demonstration | wastewater | A RWQCB may consider priority pollutants in intake water... provided that the discharger has demonstrated... (3) The intake water is from the same water body as the receiving water body. | Applicable when establishing intake water credits | high |
| #Q039 | reporting | reporting | mandatory | Compliance Schedule Justification | wastewater | The discharger shall submit to the RWQCB the following justification before compliance schedules may be authorized in a permit: (a) documentation that diligent efforts have been made to quantify pollutant levels... (b) documentation of source control... (c) a proposed schedule... | Required before compliance schedules are authorized | high |
| #Q040 | administrative | operational | mandatory | Laboratory Certification Requirement | other | Laboratories analyzing monitoring samples shall be certified by the Department of Health Services, in accordance with the provision of Water Code Section 13176 | high | |
| #Q041 | reporting | reporting | mandatory | Analytical Reporting Protocols | wastewater, other | The discharger shall report the results of analytical determinations... using the following reporting protocols: 1. Sample results greater than or equal to the RL shall be reported as measured... 2. Sample results less than the RL, but greater than or equal to the laboratory's MDL, shall be reported as 'Detected, but Not Quantified,' or DNQ. | high | |
| #Q042 | corrective_action | operational | mandatory | Pollutant Minimization Program Mandatory Trigger | wastewater, aquatic life | Dischargers shall be required to conduct a Pollutant Minimization Program (PMP)... when there is evidence... that the priority pollutant is present in the effluent above an effluent limitation and either: a. A sample result is reported as DNQ and the effluent limitation is less than the RL; or b. A sample result is reported as ND and the effluent limitation is less than the MDL. | When monitoring evidence indicates presence above limits but below quantification levels | high |
| #Q043 | monitoring | health | mandatory | TCDD Equivalent Monitoring Requirement | wastewater | Each RWQCB shall require... major and minor POTW and industrial dischargers in its region to conduct effluent monitoring for the 2,3,7,8-TCDD congeners listed above. | Applicable to major and minor POTW and industrial dischargers | high |
| #Q044 | corrective_action | operational | mandatory | Toxicity Reduction Evaluation (TRE) | aquatic life | If a discharge causes or contributes to chronic toxicity in a receiving water body, a toxicity reduction evaluation (TRE) is required. | Triggered by repeated toxicity test results | high |
| #Q045 | administrative | operational | mandatory | Categorical Exception Submission Requirements | drinking water, agricultural water | For each project [under categorical exception], the discharger shall notify potentially affected public and governmental agencies... [and] submit to the Executive Officer...: (1) A detailed description... (2) A time schedule; (3) A discharge and receiving water quality monitoring plan... | Applicable to resource/pest management or drinking water facility maintenance projects | high |
| #Q046 | monitoring | operational | mandatory | Periodic Monitoring for Non-Limited Pollutants | wastewater | The RWQCB shall require periodic monitoring (at least once prior to the issuance and reissuance of a permit) for pollutants for which criteria or objectives apply and for which no effluent limitations have been established; however, the RWQCB may choose to exempt low volume discharges, determined to have no significant adverse impact on water quality, from this monitoring requirement. | Pollutants for which criteria or objectives apply and for which no effluent limitations have been established | high |
| #Q047 | reporting | reporting | mandatory | Interim Compliance Date Notification | wastewater | The interim requirements shall state that the discharger must notify the RWQCB, in writing, no later than 14 days following each interim date, of its compliance or noncompliance with the interim requirements. | Applies when a compliance schedule with interim requirements is granted | high |
| #Q048 | monitoring | operational | mandatory | Laboratory Calibration Standards Instruction | wastewater, other | Dischargers are to instruct laboratories to establish calibration standards so that the ML value (or its equivalent if there is differential treatment of samples relative to calibration standards) is the lowest calibration standard. | high | |
| #Q049 | prohibition | operational | mandatory | Analytical Extrapolation Prohibition | wastewater, other | At no time is the discharger to use analytical data derived from extrapolation beyond the lowest point of the calibration curve. | high | |
| #Q050 | operational | operational | mandatory | Pollutant Minimization Program Action Requirements | wastewater | The program shall include, but not be limited to, the following actions and submittals acceptable to the RWQCB: 1. An annual review and semi-annual monitoring of potential sources of the reportable priority pollutant(s), which may include fish tissue monitoring and other bio-uptake sampling; 2. Quarterly monitoring for the reportable priority pollutant(s) in the influent to the wastewater treatment system; 3. Submittal of a control strategy designed to proceed toward the goal of maintaining concentrations of the reportable priority pollutant(s) in the effluent at or below the effluent limitation; 4. Implementation of appropriate cost-effective control measures for the reportable priority pollutant(s), consistent with the control strategy; and 5. An annual status report that shall be sent to the RWQCB | When a Pollutant Minimization Program is required per section 2.4.5 | high |
| #Q051 | administrative | operational | mandatory | Study Plan Approval Requirement | aquatic life, wastewater | The site-specific study plan (including sampling design) must be approved by the RWQCB, after consultation with the California Department of Fish and Game, prior to conducting the study. | Applicable for metal translator studies | high |
| #Q052 | reporting | reporting | mandatory | Mixing Zone Application Information | wastewater | The application for the permit shall include, to the extent feasible, the information needed by the RWQCB to make a determination on allowing a mixing zone, including the calculations for deriving the appropriate receiving water and effluent flows, and/or the results of a mixing zone study. | Applicable when requesting a mixing zone | high |
| #Q053 | reporting | reporting | mandatory | MDL and RL Reporting Duty | other | The RWQCB shall require in the permit that the discharger shall report with each sample result: 1. The Reporting Level (RL) (selected from the MLs listed in Appendix 4 in accordance with section 2.4.2 or established in accordance with section 2.4.3); and 2. The laboratory's current Method Detection Limit (MDL), as determined by the procedure found in 40 CFR 136 (revised as of July 3, 1999). | high | |
| #Q054 | monitoring | operational | mandatory | Chronic Toxicity Test Species Selection | aquatic life | At least three test species with approved test protocols shall be used to measure compliance with the toxicity objective. If possible, the test species shall include a vertebrate, an invertebrate, and an aquatic plant. | high | |
| #Q055 | corrective_action | operational | mandatory | Toxicity Source Elimination | aquatic life | Once the source of toxicity is identified, the discharger shall take all reasonable steps necessary to eliminate toxicity. | Triggered once the source of toxicity is identified | high |
| #Q056 | reporting | reporting | mandatory | TCDD TEF Summing and Reporting | wastewater | In addition, the RWQCB shall require the discharger to multiply each measured or estimated congener concentration by its respective TEF value (presented above) and report the sum of these values. | Part of required 2,3,7,8-TCDD congener monitoring | high |
| #Q057 | operational | operational | mandatory | Hardness and pH Adjustment Requirement | drinking water, wastewater, aquatic life | The RWQCB shall ensure that criteria/objectives are properly adjusted for hardness or pH, if applicable, using the hardness or pH values for the receiving water, and that translators are appropriately applied (in accordance with section 1.4.1), if applicable. | When implementing the provisions of this Policy | high |
| #Q058 | monitoring | operational | mandatory | Reasonable Potential Analysis Requirement | wastewater, aquatic life | The RWQCB shall conduct the analysis in this section for each priority pollutant with an applicable criterion or objective, excluding priority pollutants for which a Total Maximum Daily Load (TMDL) has been developed, to determine if a water quality-based effluent limitation is required in the discharger's permit. | Excluding pollutants with a developed TMDL | high |
| #Q059 | monitoring | reporting | mandatory | Self-Monitoring Program Requirement | wastewater | The RWQCB shall require dischargers to conduct self-monitoring programs and shall clearly state in all permits the objective and purpose of the monitoring. | high | |
| #Q060 | monitoring | operational | mandatory | Permit Monitoring Specifications | wastewater | Furthermore, the RWQCB shall determine, and specify under the monitoring and reporting requirements, the sampling parameters, monitoring frequencies, locations, and analytical methods to be used. | high | |
| #Q061 | reporting | reporting | mandatory | Reporting Level Selection Protocol | wastewater | When there is more than one ML value for a given substance, the RWQCB shall include as RLs, in the permit, all ML values, and their associated analytical methods, listed in Appendix 4 that are below the calculated effluent limitation. | When multiple ML values exist for a substance | high |
| #Q062 | administrative | operational | mandatory | Permit Reopener Clause for Priority Pollutants | wastewater | The permit shall contain a reopener clause authorizing modifications, or revocation and reissuance of the permit, as a result of the detection of a reportable priority pollutant generated by special conditions included in the permit. | high | |
| #Q063 | administrative | operational | mandatory | Site-Specific Objective Development Consideration | aquatic life, drinking water, wastewater | Regardless of an action taken by the RWQCB as described above, the RWQCB shall, at a public meeting, consider initiating the development of a site-specific objective under the following conditions: (1) A written request... (2) Either: (a) a priority pollutant criterion or objective is not achieved... or (b) a holder of an NPDES permit demonstrates that they do not... meet... effluent limitation... and (3) A demonstration that the discharger cannot be assured of achieving the criterion... | Upon meeting the three specified criteria in Section 5.2 | high |
| #Q064 | monitoring | operational | mandatory | Reference Toxicant Sensitivity Determination | aquatic life | The sensitivity of the test organisms to a reference toxicant shall be determined concurrently with each bioassay and reported with the test results. | Applicable to chronic toxicity testing | high |
| #Q065 | reporting | operational | mandatory | Compliance Determination Median Calculation Protocol | wastewater | In those cases [where data set contains DNQ or ND], the discharger shall compute the median in place of the arithmetic mean in accordance with the following procedure: 1. The data set shall be ranked from low to high, reported ND determinations lowest, DNQ determinations next, followed by quantified values (if any). The order of the individual ND or DNQ determinations is unimportant. 2. The median value of the data set shall be determined. If the data set has an odd number of data points, then the median is the middle value. If the data set has an even number of data points, then the median is the average of the two values around the middle unless one or both of the points are ND or DNQ, in which case the median value shall be the lower of the two data points where DNQ is lower than a value and ND is lower than DNQ. | When determining compliance with an AMEL and more than one sample result is available in a month and the data set contains DNQ or ND | high |
| #Q066 | reporting | reporting | guidance | Electronic Monitoring Data Submission | wastewater | Dischargers are also encouraged to submit monitoring data in electronic formats approved by the SWRCB or RWQCB. | high | |
| #Q067 | reporting | reporting | mandatory | Congener Reporting Specifications | wastewater | The RWQCB shall require the discharger to report for each congener the analytical results of the effluent monitoring, including the quantifiable limit and the MDL, and the measured or estimated concentration. | Applicable to required 2,3,7,8-TCDD congener monitoring | high |
| #Q068 | administrative | reporting | mandatory | Quantification Limit Agreement for Specific Methods | wastewater, other | In such cases [methods 1613, 1624, or 1625], the discharger, the RWQCB, and the SWRCB shall agree on a lowest quantifiable limit and that limit will substitute for the RL for reporting and compliance determination purposes. | When the discharger uses a method whose quantification practices are not consistent with the definition of an ML | high |
| #Q069 | administrative | operational | mandatory | Restrictive Effluent Limitation Duty | wastewater, aquatic life | The RWQCB shall impose more restrictive water quality-based effluent limitations (e.g., discharge prohibitions established in accordance with Water Code Section 13243) where necessary for the protection of beneficial uses or where otherwise required by law. | Where necessary for the protection of beneficial uses or required by law | high |
| #Q070 | administrative | reporting | mandatory | Permit Amendment or Information Request Duty | wastewater | Within one year of the effective date of this Policy, each RWQCB shall either (1) amend the NPDES permits, or (2) send a written request for the information pursuant to California Water Code Section 13267 or 13383, for NPDES permittees in their respective regions... | Within one year of the effective date of the Policy | high |
| #Q071 | administrative | operational | mandatory | Mandatory Toxicity Provisions for Permits | aquatic life | The following shall be incorporated into permits: (1) a requirement to conduct a TRE if repeated tests reveal toxicity as a result of the waste discharge; (2) a provision requiring a discharger to take all reasonable steps to control toxicity once the source of toxicity is identified; and (3) a statement that failure to conduct required toxicity tests or a TRE within a designated period shall result in the establishment of effluent limitations for chronic toxicity in a permit or appropriate enforcement action. | high | |
| #Q072 | operational | operational | mandatory | Effluent Reevaluation Requirement | wastewater | Any significant change in effluent quantity or quality shall be cause for reevaluation of effluent limitations. | Upon significant change in effluent quantity or quality | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | health | mandatory | Arsenic | wastewater, agricultural water, other | requirement | <= 75 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P002 | chemical | health | mandatory | Cadmium | wastewater, agricultural water, other | requirement | <= 85 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P003 | chemical | health | mandatory | Copper | wastewater, agricultural water, other | requirement | <= 4300 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P004 | chemical | health | mandatory | Lead | wastewater, agricultural water, other | requirement | <= 840 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P005 | chemical | health | mandatory | Mercury | wastewater, agricultural water, other | requirement | <= 57 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P006 | chemical | health | mandatory | Molybdenum | wastewater, agricultural water, other | requirement | <= 75 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P007 | chemical | health | mandatory | Nickel | wastewater, agricultural water, other | requirement | <= 420 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P008 | chemical | health | mandatory | Selenium | wastewater, agricultural water, other | requirement | <= 100 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P009 | chemical | health | mandatory | Zinc | wastewater, agricultural water, other | requirement | <= 7,500 mg/kg dry weight | Discharge of biosolids with pollutant concentrations greater than those shown below is prohibited. | Ceiling Concentration | high |
| #P010 | microbiological | health | mandatory | Fecal coliform | wastewater, agricultural water | requirement | <= 1,000 MPN per gram | In addition to those standards, all biosolids meeting Class A standards shall not have a maximum fecal coliform concentration greater than 1,000 most probable number (MPN) per gram of biosolids | Class A biosolids | high |
| #P011 | microbiological | health | mandatory | Salmonella, sp. | wastewater, agricultural water | requirement | <= 3 MPN per four grams | or the density of salmonella, sp. shall not be greater than three MPN per four grams. | Class A biosolids | high |
| #P012 | chemical | health | mandatory | Arsenic Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 36 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P013 | chemical | health | mandatory | Cadmium Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 34 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P014 | chemical | health | mandatory | Copper Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 1336 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P015 | chemical | health | mandatory | Lead Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 267 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P016 | chemical | health | mandatory | Mercury Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 15 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P017 | chemical | health | mandatory | Molybdenum Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 16 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P018 | chemical | health | mandatory | Nickel Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 374 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P019 | chemical | health | mandatory | Selenium Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 89 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P020 | chemical | health | mandatory | Zinc Cumulative Pollutant Loading Rate | wastewater, agricultural water | requirement | <= 2,494 Lbs./Acre | Biosolids shall not be applied in amounts exceeding the Risk Assessment Acceptable Soil Concentration... Cumulative Pollutant Loading Rate | high | |
| #P021 | design | treatment | mandatory | Intake Flow Rate Reduction (Track 1) | other | requirement | >= 93 % | An owner or operator of an existing power plant * must reduce intake flow rate* at each unit, at a minimum, to a level commensurate with that which can be attained by a closed-cycle wet cooling system *. | Compared to the unit's design intake flow rate | high |
| #P022 | design | operational | mandatory | Through-screen Intake Velocity (Track 1) | other | requirement | <= 0.5 foot per second | The through-screen intake velocity must not exceed 0.5 foot per second. | For Track 1 compliance | high |
| #P023 | operational | treatment | mandatory | Impingement Mortality Reduction (Track 2) | other | requirement | >= 90 % | For measured reductions determined by monitoring, the owner or operator must reduce impingement mortality to a comparable level to that which would be achieved under Track 1. | A 'comparable level' is a level that achieves at least 90 percent of the reduction required under Track 1 | high |
| #P024 | operational | treatment | mandatory | Entrainment Reduction Flow (Track 2) | other | requirement | >= 93 % | For plants relying solely on reductions in flow, by recording and reporting reductions in terms of monthly flow. | As compared to the average actual flow for the corresponding months from 2000-2005 | high |
| #P025 | operational | treatment | mandatory | Entrainment Reduction Comparable Level (Track 2) | other | requirement | >= 90 % | The owner or operator must reduce entrainment to a comparable level to that which would be achieved under Track 1. | A 'comparable level' is a level that achieves at least 90 percent of the reduction required under Track 1 | high |
| #P026 | design | operational | mandatory | Large Organism Exclusion Device Bar Distance | other | requirement | <= 9 inches | No later than October 1, 2011, the owner or operator of an existing power plant* with an offshore intake * shall install large organism exclusion devices. | Having a distance between exclusion bars of no greater than nine inches | high |
| #P027 | operational | reporting | mandatory | Baseline Impingement Study Duration | other | requirement | >= 36 consecutive months | A baseline impingement study shall be performed, unless the discharger demonstrates that prior studies accurately reflect current impacts. | Study period shall be at least 36 consecutive months | high |
| #P028 | physical | reporting | mandatory | Baseline Entrainment Study Mesh Size | other | requirement | <= 335 microns | If the Regional Water Board determines that a new baseline entrainment study shall be performed to determine larval composition and abundance. | Samples must be collected using a mesh size no larger than 335 microns | high |
| #P029 | physical | reporting | mandatory | Baseline Entrainment Study Additional Mesh Size | other | requirement | 200 microns | Additional samples shall also be collected using a 200 micron mesh to provide a broader characterization of other meroplankton* entrained. | high | |
| #P030 | operational | reporting | mandatory | Baseline Entrainment Study Duration | other | requirement | >= 36 consecutive months | Baseline entrainment sampling shall provide an unbiased estimate of larvae entrained at the intake prior to the implementation of Track 2 controls. | The study period shall be at least 36 consecutive months | high |
| #P031 | physical | operational | guideline | Zooplankton Size Threshold | aquatic life, other | requirement | > 200 microns | For purposes of this Policy, refers to those planktonic invertebrates larger than 200 microns. | Policy definition for zooplankton | high |
| #P032 | design | operational | mandatory | Amortization Period | other | requirement | 20 years | Costs of compliance in terms of total dollars and dollars per megawatt hour of electrical energy produced over an amortization period of 20 years | Used for evaluation of policy modification for nuclear plants | high |
| #P033 | operational | operational | mandatory | Through-screen Intake Velocity (Track 2) | aquatic life, other | requirement | <= 0.5 foot per second | For plants relying solely on reductions in velocity, by monthly verification of through-screen intake velocity not to exceed 0.5 foot per second | Applicable to Track 2 compliance for impingement mortality | high |
| #P034 | operational | reporting | mandatory | Baseline Impingement Sampling Duration | aquatic life, other | requirement | 24 hour | Impingement shall be measured during different seasons when the cooling system is in operation and over 24-hour sampling periods. | Part of the baseline impingement study | high |
| #P035 | operational | reporting | mandatory | Post-implementation Impingement Study Duration | aquatic life, other | requirement | >= 36 consecutive months | After the Track 2 controls are implemented, to confirm the level of impingement controls, another impingement study, consistent with Section 4.A(1)(a) to (d), above, shall be performed | Conducted after Track 2 controls are implemented | high |
| #P036 | operational | reporting | mandatory | Post-implementation Impingement Sampling Period | aquatic life, other | requirement | 24 hour | After the Track 2 controls are implemented... another impingement study, consistent with Section 4.A(1)(a) to (d), above, shall be performed | Consistency with baseline sampling requirements including 24-hour periods | high |
| #P037 | physical | reporting | mandatory | Post-implementation Entrainment Study Mesh Size | aquatic life, other | requirement | <= 335 microns | another entrainment study (with a study design to the Regional Water Board's satisfaction, with samples collected using a mesh size no larger than 335 microns...) | Conducted after Track 2 controls are implemented | high |
| #P038 | physical | reporting | mandatory | Post-implementation Entrainment Additional Mesh Size | aquatic life, other | requirement | 200 microns | and with additional samples also collected using a 200 micron mesh | Conducted after Track 2 controls are implemented | high |
| #P039 | physical | health | mandatory | Vegetative border width | wastewater, agricultural water | requirement | 33 feet | irrigation water runoff is prohibited for 30 days after application of biosolids if vegetation in the application area and along the path of runoff does not provide 33 feet of unmowed grass | To prevent the movement of biosolids from the application site | high |
| #P040 | physical | operational | mandatory | Class B Biosolids Moisture Content | wastewater | requirement | < 50 percent | The application of Class B biosolids containing a moisture content of less than 50 percent is prohibited. | Specific to Class B biosolids | high |
| #P041 | design | health | mandatory | Maximum application slope | other | requirement | <= 25 percent | The application of biosolids to slopes exceeding 25 percent is prohibited. | Prohibited on slopes exceeding the limit | high |
| #P042 | physical | operational | mandatory | Maximum surface wind speed for application | other | requirement | <= 25 miles per hour | Biosolids less than 75% moisture shall not be applied during periods when the surface wind speed exceeds 25 miles per hour | Applies when biosolids moisture is less than 75% | high |
| #P043 | design | health | mandatory | Setback from domestic water supply wells | drinking water | requirement | 500 feet | Staging and biosolids application areas shall be at least... 500 feet from domestic water supply wells | May be reduced to no less than 100 feet with specific demonstration | high |
| #P044 | design | health | mandatory | Setback from non-domestic water supply wells | other | requirement | 100 feet | Staging and biosolids application areas shall be at least... 100 feet from non-domestic water supply wells | May be reduced to no less than 25 feet with specific demonstration | high |
| #P045 | design | health | mandatory | Setback from public roads and occupied residences | other | requirement | 50 feet | Staging and biosolids application areas shall be at least... 50 feet from public roads and occupied onsite residences | high | |
| #P046 | design | health | mandatory | Setback from surface waters | aquatic life, recreational water | requirement | 100 feet | Staging and biosolids application areas shall be at least... 100 feet from surface waters, including wetlands, creeks, ponds, lakes, underground aqueducts, and marshes | high | |
| #P047 | design | health | mandatory | Setback from domestic surface water supply intake | drinking water | requirement | 2500 feet | Staging and biosolids application areas shall be at least... 2,500 feet from any domestic surface water supply intake | high | |
| #P048 | operational | operational | mandatory | Maximum biosolids storage duration | other | requirement | <= 7 consecutive days | Biosolids shall not be stored for more than seven (7) consecutive days prior to application. | Short-term storage limit | high |
| #P049 | operational | reporting | mandatory | Class B Termination Waiting Period | agricultural water | requirement | 38 months | For sites using Class B biosolids, termination shall not take place until 38 months after the last Class B biosolids application. | Applicable for Notice of Termination (NOT) approval | high |
| #P050 | physical | unknown | guideline | Arid land rainfall threshold | other | requirement | < 250 millimeters | Arid lands are those areas where the long term annual average rainfall is below 250 millimeters (less than 10 inches). | Definition of arid land for application timing | high |
| #P051 | operational | operational | mandatory | Maximum Compliance Schedule for CTR Criterion | drinking water, wastewater, agricultural water, aquatic life, recreational water, other | requirement | <= 10 years | from the effective date of this Policy to establish and comply with CTR criterion-based effluent limitations | unless an exception has been granted | high |
| #P052 | operational | operational | mandatory | Maximum Compliance Schedule for TMDL Development | drinking water, wastewater, agricultural water, aquatic life, recreational water, other | requirement | <= 15 years | from the effective date of this Policy to develop and adopt a TMDL | high | |
| #P053 | operational | operational | mandatory | Maximum Compliance Schedule for TMDL-derived Effluent Limitations | drinking water, wastewater, agricultural water, aquatic life, recreational water, other | requirement | <= 20 years | from the effective date of this Policy to develop and adopt a TMDL and comply with WLAs | up to 15 years for TMDL and 5 years for compliance | high |
| #P054 | operational | reporting | mandatory | 2,3,7,8-TCDD Congener Monitoring Duration | wastewater | requirement | 3 years | monitoring of TCDD congeners by major and minor POTW and industrial dischargers | consecutive years | high |
| #P055 | physical | operational | mandatory | Chronic Toxicity Test Duration - Fathead Minnow | aquatic life | requirement | 7 days | Short-term Methods for Estimating Chronic Toxicity-Fresh Water | Pimephales promelas larval survival and growth | high |
| #P056 | physical | operational | mandatory | Chronic Toxicity Test Duration - Water Flea | aquatic life | requirement | 6 to 8 days | Short-term Methods for Estimating Chronic Toxicity-Fresh Water | Ceriodaphnia dubia survival and number of young | high |
| #P057 | physical | operational | mandatory | Chronic Toxicity Test Duration - Alga | aquatic life | requirement | 4 days | Short-term Methods for Estimating Chronic Toxicity-Fresh Water | Selenastrum capricornutum growth rate | high |
| #P058 | chemical | reporting | mandatory | Minimum Level (ML) for 1,1 Dichloroethane (GC) | other | requirement | 0.5 ppb | Volatile substances ML for use in reporting and compliance determination | Using Gas Chromatography technique | high |
| #P059 | operational | operational | mandatory | Site-Specific Metal Translator Study Submission Deadline | wastewater | requirement | <= 2 years | within a time period specified by the RWQCB for submitting a proposed translator | from the date of issuance/reissuance of the permit | high |
| #P060 | chemical | health | mandatory | 2,3,7,8-TetraCDD Toxic Equivalency Factor | other | requirement | 1 factor | Toxic equivalency factors (TEFs) for congeners of chlorinated dibenzodioxins and dibenzofurans compared to 2,3,7,8-TCDD. | high | |
| #P061 | operational | reporting | mandatory | Major Discharger TCDD Monitoring Frequency | wastewater | requirement | 2 samples per year | Major POTW and industrial dischargers must conduct effluent monitoring for 17 congeners. | Once during dry weather and once during wet weather each year for three consecutive years | high |
| #P062 | operational | reporting | mandatory | Minor Discharger TCDD Monitoring Frequency | wastewater | requirement | 2 samples per year | Minor POTW and industrial dischargers must conduct effluent monitoring for 17 congeners. | Once during dry weather and once during wet weather for one year during the three-year period | high |
| #P063 | chemical | operational | mandatory | Arsenic Conversion Factor | aquatic life | requirement | 1.000 factor | Factor for converting metal criterion expressed as total recoverable fraction to dissolved fraction for freshwater acute/chronic and saltwater acute/chronic. | high | |
| #P064 | chemical | operational | mandatory | Cadmium Conversion Factor (Freshwater Acute) | aquatic life | requirement | 0.944 factor | Conversion factor at 100 mg/l hardness as CaCO3. | Hardness dependent | high |
| #P065 | chemical | reporting | mandatory | 1,1 Dichloroethene Minimum Level (GC) | other | requirement | 0.5 ppb | Minimum Levels (MLs) for reporting and compliance determination of volatile substances. | Gas Chromatography (GC) technique | high |
| #P066 | chemical | reporting | mandatory | 1,1 Dichloroethene Minimum Level (GCMS) | other | requirement | 2 ppb | Minimum Levels (MLs) for reporting and compliance determination of volatile substances. | Gas Chromatography/Mass Spectrometry (GCMS) technique | high |
| #P067 | operational | reporting | mandatory | Interim requirement notification deadline | other | requirement | 14 days | The discharger must notify the RWQCB of its compliance or noncompliance with interim requirements. | Following each interim date | high |
| #P068 | operational | operational | mandatory | Maximum interval between interim dates | other | requirement | 1 year | Timeframe for interim dates in a compliance schedule. | high | |
| #P069 | operational | reporting | mandatory | Periodic monitoring frequency for pollutants without limits | other | requirement | 1 sample per permit cycle | Monitoring for pollutants with criteria/objectives but no established limitations. | At least once prior to the issuance and reissuance of a permit | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | ACUTELY TOXIC CONDITIONS | as used in the context of mixing zones, refers to lethality that occurs to mobile aquatic organisms that move or drift through the mixing zone. | high | |
| #D002 | ARITHMETIC MEAN ( µ ) | also called the average, is the sum of measured values divided by the number of samples. For ambient water concentrations, the arithmetic mean is calculated as follows: Arithmetic mean = = µ Σ x / n where: Σ x is the sum of the measured ambient water concentrations, and n is the number of samples. | high | |
| #D003 | AVERAGE MONTHLY EFFLUENT LIMITATION (AMEL) | means the highest allowable average of daily pollutant discharges over a calendar month, calculated as the sum of all daily discharges measured during a calendar month divided by the number of measurements. | high | |
| #D004 | BEST MANAGEMENT PRACTICES (BMPs) | are methods, measures, or practices designed and selected to reduce or eliminate the discharge of pollutants to surface waters from point and nonpoint source discharges including storm water. BMPs include structural and non-structural controls, and operation and maintenance procedures, which can be applied before, during, and/or after pollution producing activities. | high | |
| #D005 | BIOACCUMULATIVE pollutants | are those substances taken up by an organism from its surrounding medium through gill membranes, epithelial tissue, or from food and subsequently concentrated and retained in the body of the organism. | high | |
| #D006 | BIOLOGICALLY-BASED RECEIVING WATER FLOW | refers to the method for determining receiving water flows developed by the U.S. EPA Office of Research and Development which directly uses the averaging periods and exceedance frequencies specified in the acute and chronic aquatic life criteria for individual pollutants (e.g., 1 day and 3 years for acute criteria, and 4 days and 3 years for the chronic criteria). | high | |
| #D007 | CARCINOGENIC pollutants | are substances that are known to cause cancer in living organisms. | high | |
| #D008 | COEFFICIENT OF VARIATION ( CV ) | is a measure of the data variability and is calculated as the estimated standard deviation divided by the arithmetic mean of the observed values. | high | |
| #D009 | COMPLETELY-MIXED DISCHARGE condition | means not more than a 5 percent difference, accounting for analytical variability, in the concentration of a pollutant exists across a transect of the water body at a point within two stream/river widths from the discharge point. | high | |
| #D010 | DILUTION CREDIT | is the amount of dilution granted to a discharge in the calculation of a water quality-based effluent limitation, based on the allowance of a specified mixing zone. It is calculated from the dilution ratio or determined through conducting a mixing zone study or modeling of the discharge and receiving water. | high | |
| #D011 | DILUTION RATIO | is the critical low flow of the upstream receiving water divided by the flow of the effluent discharged. | high | |
| #D012 | DISCHARGER-SPECIFIC WER | is a WER that is applied to individual pollutant limits in an NPDES permit issued to a particular permit holder. A discharger-specific WER applies only to the applicable limits in the discharger's permit. Discharger-specific WERs are distinguished for WERs that are developed on a waterbody or watershed basis as part of a water quality standards action resulting in adoption of an SSO. | high | |
| #D013 | DYNAMIC MODELS | used for calculating effluent limitations predict the effects of receiving water and effluent flow and of concentration variability. The outputs of dynamic models can be used to base effluent limitations on probability estimates of receiving water concentrations rather than critical conditions (which are used in the steady-state model). | high | |
| #D014 | EFFLUENT CONCENTRATION ALLOWANCE (ECA) | is a value derived from the water quality criterion/objective, dilution credit, and ambient background concentration that is used, in conjunction with the coefficient of variation for the effluent monitoring data, to calculate a longterm average (LTA) discharge concentration. The ECA has the same meaning as waste load allocation (WLA) as used in U.S. EPA guidance | high | |
| #D015 | ENCLOSED BAYS | means indentations along the coast that enclose an area of oceanic water within distinct headlands or harbor works. Enclosed bays include all bays where the narrowest distance between the headlands or outermost harbor works is less than 75 percent of the greatest dimension of the enclosed portion of the bay. Enclosed bays include, but are not limited to, Humboldt Bay, Bodega Harbor, Tomales Bay, Drake's Estero, San Francisco Bay, Morro Bay, Los Angeles-Long Beach Harbor, Upper and Lower Newport Bay, Mission Bay, and San Diego Bay. Enclosed bays do not include inland surface waters or ocean waters. | high | |
| #D016 | ESTIMATED CHEMICAL CONCENTRATION | is the estimated chemical concentration that results from the confirmed detection of the substance by the analytical method below the ML value. | high | |
| #D017 | ESTUARIES | means waters, including coastal lagoons, located at the mouths of streams that serve as areas of mixing for fresh and ocean waters. Coastal lagoons and mouths of streams that are temporarily separated from the ocean by sandbars shall be considered estuaries. Estuarine waters shall be considered to extend from a bay or the open ocean to a point upstream where there is no significant mixing of fresh water and seawater. Estuarine waters included, but are not limited to, the Sacramento-San Joaquin Delta, as defined in Water Code Section 12220, Suisun Bay, Carquinez Strait downstream to the Carquinez Bridge, and appropriate areas of the Smith, Mad, Eel, Noyo, Russian, Klamath, San Diego, and Otay rivers. Estuaries do not include inland surface waters or ocean waters. | high | |
| #D018 | EXISTING DISCHARGER | means any discharger that is not a new discharger. An existing discharger includes an 'increasing discharger' (i.e., an existing facility with treatment systems in place for its current discharge that is or will be expanding, upgrading, or modifying its existing permitted discharge after the effective date of this Policy). | high | |
| #D019 | INFEASIBLE | means not capable of being accomplished in a successful manner within a reasonable period of time, taking into account economic, environmental, legal, social, and technological factors. | high | |
| #D020 | INLAND SURFACE WATERS | are all surface waters of the State that do not include the ocean, enclosed bays, or estuaries. | high | |
| #D021 | MAXIMUM DAILY EFFLUENT LIMITATION (MDEL) | means the highest allowable daily discharge of a pollutant, over a calendar day (or 24-hour period). For pollutants with limitations expressed in units of mass, the daily discharge is calculated as the total mass of the pollutant discharged over the day. For pollutants with limitations expressed in other units of measurement, the daily discharge is calculated as the arithmetic mean measurement of the pollutant over the day. | high | |
| #D022 | MINIMUM LEVEL (ML) | is the concentration at which the entire analytical system must give a recognizable signal and acceptable calibration point. The ML is the concentration in a sample that is equivalent to the concentration of the lowest calibration standard analyzed by a specific analytical procedure, assuming that all the method specified sample weights, volumes, and processing steps have been followed. | high | |
| #D023 | MIXING ZONE | is a limited volume of receiving water that is allocated for mixing with a wastewater discharge where water quality criteria can be exceeded without causing adverse effects to the overall water body. | high | |
| #D024 | POLLUTION PREVENTION | means any action that causes a net reduction in the use or generation of a hazardous substance or other pollutant that is discharged into water and includes, but is not limited to, input change, operational improvement, production process change, and product reformulation (as defined in Water Code Section 13263.3). | high | |
| #D025 | WATER-EFFECT RATIO (WER) | is an appropriate measure of the toxicity of a material obtained in a site water divided by the same measure of the toxicity of the same material obtained simultaneously in a laboratory dilution water. | high | |
| #D026 | Discharger | Any person or entity that discharges lanthanum-modified clay to canals, ditches, lakes, ponds, reservoirs or other storage or constructed conveyance facilities that are surface waters of the United States (U.S.) for the purpose of inactivating soluble reactive phosphorus. | high | |
| #D027 | Application Area | Is the area of the treated waterbody to which lanthanum-modified clay is directly applied. | high | |
| #D028 | Average Weekly Effluent Limitation (AWEL) | The highest allowable average of daily discharges over a calendar week (Sunday through Saturday), calculated as the sum of all daily discharges measured during a calendar week divided by the number of daily discharges measured during that week. | high | |
| #D029 | Daily Discharge | Daily Discharge is defined as either: (1) the total mass of the constituent discharged over the calendar day (12:00 am through 11:59 pm) or any 24-hour period that reasonably represents a calendar day for purposes of sampling (as specified in the permit), for a constituent with limitations expressed in units of mass or; (2) the unweighted arithmetic mean measurement of the constituent over the day for a constituent with limitations expressed in other units of measurement (e.g., concentration). The daily discharge may be determined by the analytical results of a composite sample taken over the course of one day (a calendar day or other 24-hour period defined as a day) or by the arithmetic mean of analytical results from one or more grab samples taken over the course of the day. For composite sampling, if 1 day is defined as a 24-hour period other than a calendar day, the analytical result for the 24-hour period will be considered as the result for the calendar day in which the 24-hour period ends. | high | |
| #D030 | Detected, but Not Quantified (DNQ) | DNQ are those sample results less than the reporting limit (RL), but greater than or equal to the laboratory's method detection limit (MDL). Sample results reported as DNQ are estimated concentrations. | high | |
| #D031 | Instantaneous Maximum Effluent Limitation | The highest allowable value for any single grab sample or aliquot (i.e., each grab sample or aliquot is independently compared to the instantaneous maximum limitation). | high | |
| #D032 | Instantaneous Minimum Effluent Limitation | The lowest allowable value for any single grab sample or aliquot (i.e., each grab sample or aliquot is independently compared to the instantaneous minimum limitation). | high | |
| #D033 | Median | The middle measurement in a set of data. The median of a set of data is found by first arranging the measurements in order of magnitude (either increasing or decreasing order) If the number of measurements (n) is odd, then: If n is even, then: (i.e., the midpoint between the (n/2 and ((n/2)+1))). | high | |
| #D034 | Method Detection Limit (MDL) | MDL is the minimum concentration of a substance that can be reported with 99 percent confidence that the measured concentration is distinguishable from method blank results, as defined in 40 Code of Federal Regulations (CFR). part 136, Attachment B. | high | |
| #D035 | Not Detected (ND) | Sample results which are less than the laboratory's MDL. | high | |
| #D036 | Persistent Pollutants | Persistent pollutants are substances for which degradation or decomposition in the environment is nonexistent or very slow. | high | |
| #D037 | Pollutant Minimization Program (PMP) | PMP means waste minimization and pollution prevention actions that include, but are not limited to, product substitution, waste stream recycling, alternative waste management methods, and education of the public and businesses. The goal of the PMP shall be to reduce all potential sources of a priority pollutant(s) through pollutant minimization (control) strategies, including pollution prevention measures as appropriate, to maintain the effluent concentration at or below the water quality-based effluent limitation. Pollution prevention measures may be particularly appropriate for persistent bioaccumulative priority pollutants where there is evidence that beneficial uses are being impacted. The San Diego Water Board may consider cost effectiveness when establishing the requirements of a PMP. The completion and implementation of a Pollution Prevention Plan, if required pursuant to Water Code section 13263.3(d), shall be considered to fulfill the PMP requirements. | high | |
| #D038 | Reporting Level (RL) | The RL is the ML (and its associated analytical method) chosen by the Discharger for reporting and compliance determination from the MLs included in this Order, including an additional factor if applicable as discussed herein. The MLs included in this Order correspond to approved analytical methods for reporting a sample result that are selected by the San Diego Water Board either from Appendix 4 of the SIP in accordance with section 2.4.2 of the SIP or established in accordance with section 2.4.3 of the SIP. The ML is based on the proper application of method-based analytical procedures for sample preparation and the absence of any matrix interferences. Other factors may be applied to the ML depending on the specific sample preparation steps employed. For example, the treatment typically applied in cases where there are matrixeffects is to dilute the sample or sample aliquot by a factor of ten. In such cases, this additional factor must be applied to the ML in the computation of the RL. | high | |
| #D039 | Source of Drinking Water | Any water designated as municipal or domestic supply (MUN) in the San Diego Basin Plan. | high | |
| #D040 | Standard Deviation ( σ ) | Standard Deviation is a measure of variability that is calculated as follows: where: x is the observed value; µ is the arithmetic mean of the observed values; and n is the number of samples. | high | |
| #D041 | Statistical Threshold Value (STV) | The STV for the bacteria water quality objectives is a set value that approximates the 90th percentile of the water quality distribution of a bacterial population. For the bacteria water quality objectives, the STV for E-coli is 320 CFU/100 mL. | high | |
| #D042 | Toxicity Reduction Evaluation (TRE) | TRE is a study conducted in a step-wise process designed to identify the causative agents of effluent or ambient toxicity, isolate the sources of toxicity, evaluate the effectiveness of toxicity control options, and then confirm the reduction in toxicity. The first steps of the TRE consist of the collection of data relevant to the toxicity, including additional toxicity testing, and an evaluation of facility operations and maintenance practices, and best management practices. A Toxicity Identification Evaluation (TIE) may be required as part of the TRE, if appropriate. (A TIE is a set of procedures to identify the specific chemical(s) responsible for toxicity. These procedures are performed in three phases (characterization, identification, and confirmation) using aquatic organism toxicity tests.) | high | |
| #D043 | Bypass | 'Bypass' means the intentional diversion of waste streams from any portion of a treatment facility. | high | |
| #D044 | Severe property damage | 'Severe property damage' means substantial physical damage to property, damage to the treatment facilities, which causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. | high | |
| #D045 | Upset | Upset means an exceptional incident in which there is unintentional and temporary noncompliance with technology-based permit effluent limitations because of factors beyond the reasonable control of the Discharger. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. | high | |
| #D046 | Order | For the purposes of this Order, the term permit, general permit, and WDR, shall have the same meaning as the term Order used elsewhere in this Order. | high | |
| #D047 | Pollution Prevention | Pollution Prevention means any action that causes a net reduction in the use or generation of a hazardous substance or other pollutant that is discharged into water and includes, but is not limited to, input change, operational improvement, production process change, and product reformulation (as defined in Water Code section 13263.3). Pollution prevention does not include actions that merely shift a pollutant in wastewater from one environmental medium to another environmental medium, unless clear environmental benefits of such an approach are identified to the satisfaction of the California State Water Resources Control Board (State Water Board) or San Diego Water Board. | high | |
| #D048 | Toxicity Identification Evaluation (TIE) | A TIE is a set of procedures to identify the specific chemical(s) responsible for toxicity. These procedures are performed in three phases (characterization, identification, and confirmation) using aquatic organism toxicity tests. | high | |
| #D049 | permittee | references to the 'discharger' or 'permittee' in applicable federal and State of California (State) laws, regulations, plans, or policy are held to be equivalent to references to the Discharger herein. | high | |
| #D050 | existing Dischargers | Dischargers enrolled under Order No. R9-2012-0063 (referred to in this Order as existing Dischargers) | high | |
| #D051 | responsible corporate officer | a responsible corporate officer means: (i) A president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy- or decision-making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. | high | |
| #D052 | duly authorized representative | A person is a duly authorized representative only if: 5.2.3.1. The authorization is made in writing by a person described in Standard Provisions - Reporting 5.2.2 above (40 CFR § 122.22(b)(1)); 5.2.3.2. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. | high | |
| #D053 | storm water | The federal regulations, 40 CFR 122.26(b)(13), define storm water as storm water runoff, snow melt runoff, and surface runoff and drainage. | high | |
| #D054 | illicit discharge | 40 CFR 122.26(b)(2) defines an illicit discharge as any discharge to a storm water conveyance system that is not composed entirely of storm water except discharges pursuant to an NPDES permit and discharges resulting from firefighting activities. | high | |
| #D055 | NPDES | National Pollutant Discharge Elimination System | high | |
| #D056 | San Diego Water Board | California Regional Water Quality Control Board, San Diego Region | high | |
| #D057 | U.S. EPA | U.S. Environmental Protection Agency | high | |
| #D058 | CWA | Clean Water Act | high | |
| #D059 | Water Code | California Water Code | high | |
| #D060 | Basin Plan | Water Quality Control Plan for the San Diego Basin | high | |
| #D061 | WQMP | Water Quality Management Plan | high | |
| #D062 | NOA | Notice of Applicability | high | |
| #D063 | NOT | Notice of Termination | high | |
| #D064 | MRP | Monitoring and Reporting Program | high | |
| #D065 | ARITHMETIC MEAN ( μ ) | Also called the average, is the sum of measured values divided by the number of samples. For ambient water concentrations, the arithmetic mean is calculated as follows: where: Σ x is the sum of the measured ambient water concentrations, and n is the number of samples. | high | |
| #D066 | AVERAGE MONTHLY EFFLUENT LIMITATION (AMEL) | The highest allowable average of daily discharges over a calendar month, calculated as the sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month. | high | |
| #D067 | BIOACCUMULATIVE | Those substances taken up by an organism from its surrounding medium through gill membranes, epithelial tissue, or from food and subsequently concentrated and retained in the body of the organism. | high | |
| #D068 | CARCINOGENIC | Pollutants are substances that are known to cause cancer in living organisms. | high | |
| #D069 | COEFFICIENT OF VARIATION ( CV ) | CV is a measure of the data variability and is calculated as the estimated standard deviation divided by the arithmetic mean of the observed values. | high | |
| #D070 | EFFLUENT CONCENTRATION ALLOWANCE (ECA) | ECA is a value derived from the water quality criterion/objective, dilution credit, and ambient background concentration that is used, in conjunction with the coefficient of variation for the effluent monitoring data, to calculate a long-term average (LTA) discharge concentration. The ECA has the same meaning as wasteload allocation (WLA) as used in U.S. EPA guidance. | high | |
| #D071 | Total Maximum Daily Load (TMDL) | the maximum amount of a pollutant that a waterbody can receive and still attain water quality objectives and protection of designated beneficial uses. | high | |
| #D072 | Numeric Targets | identify the specific water column, sediment, or tissue concentrations (or other endpoints) which equate to attainment of the Basin Plan water quality objectives and the protection of designated beneficial uses. | high | |
| #D073 | Linkage Analysis | to confirm that the TMDL will result in the attainment of applicable water quality objectives and beneficial use protection. | high | |
| #D074 | Pollution Prevention | practices and processes that reduce or eliminate the generation of pollutants, in contrast to source control, treatment, or disposal. | high | |
| #D075 | Enforcement action | any formal or informal action taken to address an incidence of actual or threatened noncompliance with existing regulations or provisions designed to protect water quality. | high | |
| #D076 | Onsite wastewater treatment system(s) (OWTS) | any individual or community onsite wastewater treatment, pretreatment and dispersal system including, but not limited to, a conventional, alternative, or experimental sewage dispersal system such a septic tanks having a subsurface discharge. | high | |
| #D077 | Copermittees | own or operate MS4s through which urban runoff discharges into waters of the U.S. within the San Diego Region. | high | |
| #D078 | Wet weather days | days with rainfall events of 0.2 inches or greater and the following 72 hours. | high | |
| #D079 | Dry weather days | days with less than 0.2 inch of rainfall observed on each of the previous 3 days. | high | |
| #D080 | Designated Beach Area | those recreation waters that, during the recreation season, are heavily used (based upon a comparison of use within the state) and may have a lifeguard, bathhouse facilities, or public parking for beach access. | high | |
| #D081 | Moderate Full Body Contact Recreation | those recreation waters that are not designated bathing beach waters but typically, during the recreation season, are used by at least half of the number of people as at typical designated bathing beach waters within the state. | high | |
| #D082 | Lightly Used Full Body Contact Recreation | those recreation waters that are not designated bathing beach waters but typically, during the recreation season, are used by less than half of the number of people as at typical designated bathing beach waters within the state, but are more than infrequently used. | high | |
| #D083 | Infrequently Used Full Body Contact | those recreation waters that are rarely or occasionally used. | high |