| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | prohibition | operational | mandatory | Prohibited Locations for Composting | wastewater, other | Any feedstock, additive, amendment, or compost (active, curing, or final product) stored, processed, or composted outside of the designated composting operation areas, as those boundaries are specified in an NOI and/or a technical report, and approved by the Regional Water Board, is prohibited. | high | |
| #Q002 | prohibition | operational | mandatory | Prohibited Volumes | wastewater, other | Any volume of any feedstock, additive, amendment, or compost (active, curing, or final product) exceeding those specified in this General Order is prohibited. | high | |
| #Q003 | prohibition | operational | mandatory | Prohibited Materials | wastewater, other | Use of any feedstock, additive, amendment, or material, other than those described in this General Order is prohibited. | high | |
| #Q004 | prohibition | operational | mandatory | Prohibited Waste Discharges | wastewater, other | Discharge of any of the following wastes, including storage thereof, at a composting operation under this General Order is prohibited: a. Animal carcasses (whole or in part); b. Liquid wastes other than those of food origin; c. Medical wastes as defined in the Health and Safety Code section 117690; d. Radioactive wastes; e. Septage; f. Sludge, including but not limited to sewage sludge, water treatment sludge, and industrial sludge; g. Wastes classified as 'designated' as defined in Water Code section 13173; h. Wastes classified as 'hazardous' as defined in California Code of Regulations, title 22, section 66261.3; i. Wood containing lead-based paint or wood preservatives, or ash from such wood; or j. Any feedstock, additive, or amendment other than those specifically described in this General Order, unless approved by the Regional Water Board. | high | |
| #Q005 | prohibition | operational | mandatory | Prohibition of Discharge to Surface Waters | wastewater | Discharge of wastes to surface waters is prohibited, except as authorized by an NPDES permit. | Unless authorized by an NPDES permit | high |
| #Q006 | prohibition | operational | mandatory | Prohibition of Off-site Waste Discharges | wastewater | Discharge of wastes including overflow, wastewater, or bypass from transport, treatment, storage, or disposal systems to adjacent drainages or adjacent properties is prohibited. | high | |
| #Q007 | prohibition | operational | mandatory | Prohibition of Biosolids as Additive or Amendment | wastewater, other | Use of biosolids as an additive or amendment is prohibited. | high | |
| #Q008 | prohibition | operational | mandatory | Prohibition of Evapo-concentration Resulting in Hazardous Levels | wastewater | Evapo-concentration of constituents in any detention pond that results in hazardous constituent concentration levels, as defined in California Code of Regulations, title 22, section 66261.3 is prohibited. | high | |
| #Q009 | operational | operational | mandatory | Handling of Additives and Amendments | other | Additives and amendments must be handled, stored, and processed in the manner specified in the NOI and/or technical report and approved by the Regional Water Board. | high | |
| #Q010 | operational | operational | mandatory | Prevention of Pollution and Nuisance | wastewater, other | All feedstocks, additives, amendments, and compost (active, curing, or final product) must not cause, threaten to cause, or contribute to conditions of pollution, contamination, or nuisance. These discharges must comply with the applicable Basin Plan requirements. | high | |
| #Q011 | operational | operational | mandatory | Containment Structure Use | wastewater, other | All feedstocks, additives, amendments, and compost (active, curing, or final product) must be located on containment structures designed and constructed as required by this General Order. | high | |
| #Q012 | administrative | reporting | mandatory | Water and Wastewater Management Plan Submittal | wastewater | Dischargers must submit with the NOI and technical report, a Water and Wastewater Management Plan that describes how wastewater will be managed to prevent discharge. The plan must describe the design, operations, and maintenance of the systems, including water balance calculations and assumptions, if required. | high | |
| #Q013 | operational | operational | mandatory | Wastewater Handling | wastewater | Wastewater shall be handled and managed in accordance with an approved Water and Wastewater Management Plan in the technical report described in Attachment D. | high | |
| #Q014 | design | operational | mandatory | Design of Working Surfaces and Containment Structures | wastewater, other | Areas used for receiving, processing, or storing feedstocks, additives, amendments, or compost (active, curing, or final product) must be designed to limit water quality degradation. Working surfaces and containment structures must be designed, constructed, operated and maintained to: a. Facilitate drainage and minimize ponding by sloping or crowning pads to reduce infiltration of liquids; b. Reliably transmit free liquid present during storage, treatment, and processing of materials to a containment structure to minimize the potential for waste constituents to enter groundwater or surface water; and c. Prevent conditions that could contribute to, cause, or threaten to cause a condition of contamination, pollution, or nuisance. | high | |
| #Q015 | design | operational | mandatory | Working Surfaces Equipment Access | other | Working surfaces must be constructed to allow year-round equipment access to feedstocks, additives, amendments, and compost (active, curing, or final product) without damage to the working surfaces and containment structures. | high | |
| #Q016 | operational | operational | mandatory | Prevention of Pile Oversaturation | wastewater, other | To prevent potential impacts to waters of the state, the Discharger must minimize the potential for piles of feedstocks, additives, amendments, or compost (active, curing, or final product) to become over-saturated and generate wastewater. | high | |
| #Q017 | design | operational | mandatory | Storm Event Run-on and Runoff Control | wastewater, other | Areas used for receiving, processing, or storing feedstocks, additives, amendments, or compost (active, curing, or final product) must be designed, constructed, and maintained to control and manage all run-on, runoff, and precipitation which falls onto or within the boundaries of these areas, from a 25-year, 24-hour peak storm event at a minimum. | high | |
| #Q018 | design | operational | mandatory | Protection from Inundation | other | Areas used for receiving, processing, or storing feedstocks, additives, amendments, or compost (active, curing, or final product) must be protected from inundation by surface flows associated with a 25-year, 24-hour peak storm event at a minimum. | high | |
| #Q019 | design | operational | mandatory | Detention Pond Design | wastewater | Detention ponds, if used, must be designed, constructed, and maintained to prevent conditions contributing to, causing, or threatening to cause contamination, pollution, or nuisance, and must be capable of containing, without overflow or overtopping (taking into consideration the crest of winddriven waves and water reused in the composting operation), all runoff from the working surfaces in addition to precipitation that falls into the detention pond from a 25-year, 24-hour peak storm event at a minimum, or equivalent alternative approved by the Regional Water Board. | If detention ponds are used | high |
| #Q020 | operational | operational | mandatory | Detention Pond Management Plan Adherence | wastewater | Detention ponds, if used, shall be managed as described in the facility's Water and Wastewater Management Plan. | If detention ponds are used | high |
| #Q021 | operational | health | mandatory | Mosquito Mitigation in Detention Ponds | wastewater | Detention ponds, if used, shall be managed to mitigate breeding of mosquitoes including, but not limited to the following: a. An erosion control program shall be implemented to ensure that small coves and irregularities are not created around the perimeter of the water surface. b. Weeds shall be minimized through control of water depth, a shoreline synthetic liner, harvesting, or herbicides. c. Dead algae, vegetation, and debris shall be removed from the water surface. d. Coordination with the local mosquito abatement or vector control district to supplement the measures described above in cases where other methods are infeasible. | If detention ponds are used | high |
| #Q022 | design | operational | mandatory | Berm Design and Maintenance | wastewater, other | Berms must be designed, constructed, and maintained to prevent run-on and run-off from a 25-year, 24-hour peak storm event at a minimum. Berms must be adequately protected from erosion, and must not cause, threaten to cause, or contribute to conditions resulting in contamination, pollution, or nuisance. | high | |
| #Q023 | design | operational | mandatory | Drainage Conveyance Systems | wastewater | Drainage conveyance systems must be designed, constructed, and maintained for conveyance of wastewater from the working surface in addition to direct precipitation from a 25-year, 24-hour peak storm event at a minimum. Ditches must be properly sloped to minimize ponding and kept free and clear of debris to allow for continuous flow of liquid. Ditches must be adequately protected from erosion, and must not cause, threaten to cause, or contribute to conditions resulting in contamination, pollution, or nuisance. Ditches must be inspected and cleaned out annually prior to the wet season. | high | |
| #Q024 | administrative | reporting | mandatory | Groundwater Protection Monitoring Plan for Manure Composting | other | The Discharger must implement a groundwater protection monitoring program. The Discharger shall submit a complete Groundwater Protection Monitoring Plan in the technical report with the NOI, as described in Attachment D. | For Tier 1 composting operations that propose to compost manure as a feedstock | high |
| #Q025 | monitoring | operational | mandatory | Implementation of Groundwater Protection Monitoring Plan | other | Within 90 days of issuance of an NOA for existing facilities or within 90 days after commencement of operations at newly constructed facilities, the Discharger shall implement the approved Groundwater Protection Monitoring Plan. | For Tier 1 composting operations that propose to compost manure as a feedstock | high |
| #Q026 | design | operational | mandatory | Detention Pond Leak Detection Monitoring Device | wastewater | Detention ponds must be designed and constructed with a pan lysimeter monitoring device under the lowest point of the pond, or an equivalent engineered alternative specified in an NOI and/or a technical report and approved by the Regional Water Board. The engineered alternative must provide equivalent assurance of the earliest possible detection or prevention of a release from the pond. | For Tier 2 facilities | high |
| #Q027 | design | operational | mandatory | Tank Design and Operation | wastewater | Tanks, if used, must be designed, operated, maintained and monitored in accordance with applicable laws and regulations. | If tanks are used at Tier 2 facilities | high |
| #Q028 | monitoring | reporting | mandatory | Compliance with Monitoring and Reporting Program | other, wastewater | Pursuant to Water Code section 13267, the Discharger must comply with the applicable requirements specified in the MRP (Attachment B). If a sitespecific MRP becomes necessary, the Discharger must comply with requirements specified in an individual MRP issued to the Discharger by the Regional Water Board. | high | |
| #Q029 | operational | operational | mandatory | Maintenance of Containment and Monitoring Structures | wastewater, other | The Discharger shall maintain containment structures (e.g. berms, pads, detention ponds, tanks, run-on/run-off control structures, etc.) and monitoring systems (e.g. groundwater monitoring devices) in good working order. | high | |
| #Q030 | monitoring | operational | mandatory | Regular Inspection and Maintenance Frequency | wastewater, other | The Discharger must regularly inspect and maintain all containment structures and monitoring systems pursuant to this General Order, MRP, and NOA. The frequency of inspections must be sufficient to prevent feedstocks, additives, amendments, compost (active, curing, or final product), or wastewater from creating, threatening to create, or contributing to conditions of contamination, pollution, or nuisance. | high | |
| #Q031 | administrative | reporting | mandatory | Site Closure Plan Submittal | other, wastewater | At least 90 days prior to ceasing composting operations, the discharger shall submit a Site Closure Plan to the Regional Water Board for approval. | Prior to ceasing composting operations | high |
| #Q032 | reporting | reporting | mandatory | Site Closure Notification | other | The Discharger must jointly notify the appropriate Regional Water Board and Local Enforcement Agency in writing at the conclusion of the site closure activities that describes closure in accordance with the Site Closure Plan and Regional Water Board requirements. | At the conclusion of site closure activities | high |
| #Q033 | administrative | reporting | mandatory | NOI and Technical Report Submittal | other | The Discharger must submit an NOI and technical report as specified in Attachments C and D of this General Order. The Discharger must submit general information, site conditions, design, operations and monitoring information and a compliance schedule for existing facilities. The Discharger must submit a technical report with design information at least 90 days prior to any new construction of any working surfaces, detention ponds, berms, ditches, or any other water quality protection containment structure for approval by the appropriate Regional Water Board. | high | |
| #Q034 | reporting | reporting | mandatory | Final Post-Construction Report | wastewater, other | The Discharger must submit a postconstruction report to the Regional Water Board within 60 days of completing all construction activities associated with all applicable containment and monitoring structures, as required for compliance with this General Order and the MRP. The post-construction report must contain as-built plans and specifications to document that containment and monitoring structures were properly constructed and tested. | Within 60 days of completing all construction activities | high |
| #Q035 | reporting | reporting | mandatory | Annual Monitoring and Maintenance Report Submittal | wastewater, other | The Discharger must submit an Annual Monitoring and Maintenance Report to the appropriate Regional Water Board no later than April 1st of each year (or next subsequent business day, if falling on a weekend or state- observed holiday), as described in the MRP. | high | |
| #Q036 | reporting | reporting | mandatory | Report Submittal Format (GeoTracker) | other | Dischargers must submit reports (both technical and monitoring reports) to the State Water Board's GeoTracker database over the Internet in portable document format (PDF) as specified in California Code of Regulations, title 23, section 3892, subdivision (d) and section 3893. In addition, analytical data must be uploaded to the GeoTracker database under a site-specific global identification number. | high | |
| #Q037 | administrative | operational | mandatory | Use of Licensed Professionals | wastewater, other | Any plan or report submitted in compliance with the requirements of this General Order, which requires technical interpretation, or proposes either a design, or a design change that might affect the composting operation's containment features, detention ponds, or monitoring systems must be prepared by, or under the direction of, appropriately licensed professionals (e.g., registered civil engineer, professional geologist, or other registered certified specialty geologist) by the State of California. In addition, the licensee must sign and provide his or her registration number or stamp the submitted plan or report. | high | |
| #Q038 | reporting | reporting | mandatory | Revised Notice of Intent Notification | other | The Discharger must submit a revised NOI to the Regional Water Board, CalRecycle, and the Local Enforcement Agency at least 90 days prior to: (1) adding a new feedstock, additive, or amendment; (2) changing material or construction specifications; (3) changing a monitoring program; or (4) changing an operation or activity that was not described in the approved NOI and technical report. | high | |
| #Q039 | reporting | reporting | mandatory | Change in Ownership Notification | other | The Discharger must notify the Regional Water Board, CalRecycle, and the Local Enforcement Agency, in writing, at least 30 days in advance of any transfer of the General Order's responsibility and coverage from the current owner to a new owner. | high | |
| #Q040 | reporting | reporting | mandatory | Notification of Violations | other, wastewater | If a violation of requirements of this General Order or MRP occurs, the Discharger must notify the Regional Water Board by telephone or email, within 48hours, once the Discharger has knowledge of the violation. This notification must include a description of the noncompliance and its cause, the period of noncompliance (dates and times); and if the noncompliance has not been corrected, the anticipated time the noncompliance is expected to continue. The notification must also include steps taken or planned to reduce, eliminate, or prevent recurrence of the noncompliance. | high | |
| #Q041 | corrective_action | operational | mandatory | Corrective Action | other, wastewater | The Discharger must take all reasonable steps to minimize or correct any adverse impact to the environment resulting from noncompliance with this General Order, including accelerated or additional monitoring necessary to determine the nature and impact of the noncompliance. | high | |
| #Q042 | monitoring | operational | mandatory | Facility Inspections - Operations Areas | other, wastewater | Any discharger enrolled under this General Order must inspect the composting operation in accordance with the following schedule and record, at a minimum, the observations described below: a. Operations Areas - Perform quarterly inspections of the working surfaces, berms, ditches, facility perimeter, erosion control best management practices (BMPs), and any other operational surfaces (as specified in the NOI and/or a technical report and approved by the Regional Water Board). | high | |
| #Q043 | monitoring | operational | mandatory | Facility Inspections - Wastewater Management System | wastewater | Wastewater Management System - Perform quarterly inspections of the wastewater management system and submit the following observations and records in the Annual Monitoring and Maintenance Report | high | |
| #Q044 | monitoring | operational | mandatory | Facility Inspections - Annual Survey | wastewater, other | Annual Survey - Perform annual survey of the facility to confirm that all containment structures are prepared for the pending wet season. Dischargers shall conduct an annual survey prior to the anticipated wet season, but no later than August 31 and complete any necessary construction, maintenance, or repairs by October 31. | high | |
| #Q045 | monitoring | operational | mandatory | Facility Inspections - Major Storm Events | wastewater, other | Major Storm Events - The Discharger shall inspect all precipitation, diversion, and drainage facilities for damage within 7 days following major storm events. Necessary repairs shall be completed within 30 days of the inspection. | Following major storm events | high |
| #Q046 | monitoring | operational | mandatory | Detention Pond Leak Detection Monitoring Response | wastewater | Detention Pond Leak Detection Monitoring (Tier 2 only) - The leak detection monitoring device (i.e. pan lysimeter) shall be checked monthly during the wet season for liquid. Upon detection of liquid in a previously dry monitoring device Discharger shall notify the Regional Water Board within 48 hours; collect a sample and analyze the liquid for the constituents listed in Table B-1; remove the liquid from the device; and continue to monitor weekly. If liquid reappears, another sample must be collected and analyzed for the constituents in Table B-1. If the liquid is confirmed to be wastewater, the Discharger must submit a Response Action Plan within 30 days for review and approval by the Regional Water Board. | Tier 2 only | high |
| #Q047 | monitoring | operational | mandatory | Sample Handling and Preservation | wastewater, other | The Discharger shall use clean sample containers and sample handling, storage, and preservation methods that are accepted or recommended or required by the approved analytical method. | high | |
| #Q048 | monitoring | operational | mandatory | Sample Representativeness | wastewater, other | All samples collected shall be representative of the volume and nature of the material being sampled. | high | |
| #Q049 | monitoring | reporting | mandatory | Chain of Custody Requirements | wastewater, other | All samples submitted to a laboratory for analyses shall be identified in a properly completed and signed Chain of Custody form. | high | |
| #Q050 | monitoring | operational | mandatory | Field Instrument Usage Rules | wastewater, other | Field instruments may be used provided: 1) The operator is trained in the proper use and maintenance of the instruments; 2) The instruments are field calibrated prior to each monitoring event; and 3) Instruments are serviced and/or calibrated by the manufacturer at the recommended frequency. | high | |
| #Q051 | reporting | reporting | mandatory | Priority Reporting of Significant Events | wastewater, other | The Discharger shall report any noncompliance that endangers human health or the environment within 24 hours of becoming aware of its occurrence. The incident shall be reported to the Regional Water Board, the local environmental health department, and to the California Governor's Office of Emergency Services (CalOES). | If noncompliance endangers human health or the environment | high |
| #Q052 | reporting | reporting | mandatory | Record-keeping Retention Period | wastewater, other | The Discharger must retain records of all monitoring information, including all calibration and maintenance records, and copies of all reports required by this MRP, for a minimum of 5 years from the date of sample, measurement, report, or application. | high | |
| #Q053 | administrative | reporting | mandatory | Discharger Data Submission Responsibility | wastewater, aquatic life, drinking water | 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 the issuance, reissuance, or modification of a permit | high |
| #Q054 | monitoring | operational | mandatory | Laboratory Certification Requirement | wastewater, aquatic life, drinking water | Laboratories analyzing monitoring samples shall be certified by the Department of Health Services, in accordance with the provision of Water Code Section 13176, and must include quality assurance/quality control data with their reports. | high | |
| #Q055 | reporting | reporting | mandatory | Prohibition of Analytical Data Extrapolation | wastewater, aquatic life, drinking water | At no time is the discharger to use analytical data derived from extrapolation beyond the lowest point of the calibration curve. | high | |
| #Q056 | prohibition | health | mandatory | Drinking Water Intake Mixing Zone Prohibition | drinking water | A mixing zone shall not: ... (11) be allowed at or near any drinking water intake. | high | |
| #Q057 | reporting | reporting | mandatory | Interim Requirement Compliance Notification | wastewater, aquatic life, drinking water | 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. | Within 14 days following each interim date | high |
| #Q058 | corrective_action | operational | mandatory | Toxicity Reduction Evaluation (TRE) Requirement | aquatic life | If a discharge causes or contributes to chronic toxicity in a receiving water body, a toxicity reduction evaluation (TRE) is required. | If a discharge causes or contributes to chronic toxicity | high |
| #Q059 | administrative | reporting | mandatory | Compliance Schedule Justification | drinking water, wastewater, aquatic life | 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 in the discharge and the sources of the pollutant in the waste stream, and the results of those efforts; (b) documentation of source control and/or pollution minimization efforts currently underway or completed; (c) a proposed schedule for additional or future source control measures, *pollutant minimization actions, or waste treatment (i.e., facility upgrades); and (d) a demonstration that the proposed schedule is as short as practicable. | Before compliance schedules may be authorized in a permit | high |
| #Q060 | reporting | reporting | mandatory | Reporting Protocol Usage | drinking water, wastewater, aquatic life | The discharger shall report the results of analytical determinations for the presence of chemical constituents in a sample using the following reporting protocols: 1. Sample results greater than or equal to the RL shall be reported as measured by the laboratory (i.e., the measured chemical concentration in the sample). 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. The *estimated chemical concentration of the sample shall also be reported. ... 3. Sample results less than the laboratory's MDL shall be reported as 'Not Detected,' or ND. | high | |
| #Q061 | operational | operational | mandatory | Pollutant Minimization Program Actions | drinking water, wastewater, aquatic life | 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 PMP is required by the RWQCB | high |
| #Q062 | monitoring | reporting | mandatory | Effluent Monitoring for 2,3,7,8-TCDD Congeners | wastewater | each RWQCB shall... [require] (1) each major POTW and major industrial discharger monitor its effluent for the presence of the 17 congeners once during dry weather and once during wet weather each of the three years; and (2) each minor POTW and minor industrial discharger monitor its effluent for the presence of the 17 congeners once during dry weather and once during wet weather for one year during the three-year period. | Applies to major and minor POTWs and industrial dischargers | high |
| #Q063 | reporting | reporting | mandatory | TCDD Reporting and TEF Calculation | 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. 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. | high | |
| #Q064 | monitoring | operational | mandatory | Chronic Toxicity Testing Species | aquatic life | To determine compliance with the chronic aquatic life toxicity objective in a RWQCB basin plan, or an effluent limitation based on the objective, the RWQCB shall require, in a permit or other appropriate order, the use of short-term chronic toxicity tests. 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. | To measure compliance with toxicity objectives | high |
| #Q065 | administrative | reporting | mandatory | Categorical Exception Notification | drinking water, wastewater, aquatic life | For each project, the discharger shall notify potentially affected public and governmental agencies. | When seeking categorical exceptions for resource management or drinking water projects | high |
| #Q066 | reporting | reporting | mandatory | Categorical Exception Project Documentation | drinking water, wastewater, aquatic life | the discharger shall submit to the Executive Officer of the appropriate RWQCB, for approval: (1) A detailed description of the proposed action... (2) A time schedule; (3) A discharge and receiving water quality monitoring plan... (4) CEQA documentation; (5) Contingency plans; (6) Identification of alternate water supply (if needed); and (7) Residual waste disposal plans. | When seeking categorical exceptions for resource management or drinking water projects | high |
| #Q067 | reporting | operational | mandatory | Categorical Exception Restoration Certification | aquatic life | upon completion of the project, the discharger shall provide certification by a qualified biologist that the receiving water beneficial uses have been restored. | Upon completion of a project granted a categorical exception | high |
| #Q068 | prohibition | operational | mandatory | Prohibition of Compliance Schedules for New Dischargers | drinking water, wastewater, aquatic life | Compliance schedules shall not be allowed in permits for *new dischargers. | high | |
| #Q069 | administrative | reporting | mandatory | Mixing Zone Application Information | drinking water, wastewater, aquatic life | 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. | When applying for a permit that requests a mixing zone | high |
| #Q070 | reporting | reporting | mandatory | AMEL Median Calculation Protocol | drinking water, wastewater, aquatic life | When determining compliance with an AMEL and more than one sample result is available in a month, the discharger shall compute the arithmetic mean unless the data set contains one or more reported determinations of DNQ or ND. In those cases, 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... 2. The median value of the data set shall be determined. | When more than one sample is available in a month and includes DNQ or ND values | high |
| #Q071 | design | operational | mandatory | Site-Specific Translator Study Plan Approval | 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. | When a discharger commits to completing a defensible site-specific translator study | high |
| #Q072 | design | operational | mandatory | Site-Specific Translator Design Requirements | aquatic life | A site-specific translator must (1) account for spatial and/or seasonal variability in areas of the water body that are affected by the discharger's effluent and (2) protect against toxic effects during critical conditions. | high | |
| #Q073 | prohibition | operational | mandatory | Mixing Zone Integrity and Protection | aquatic life, recreational water | A mixing zone shall not: (1) compromise the integrity of the entire water body; (2) cause *acutely toxic conditions to aquatic life passing through the mixing zone; (3) restrict the passage of aquatic life; (4) adversely impact biologically sensitive or critical habitats, including, but not limited to, habitat of species listed under federal or State endangered species laws; (5) produce undesirable or nuisance aquatic life; (6) result in floating debris, oil, or scum; (7) produce objectionable color, odor, taste, or turbidity; (8) cause *objectionable bottom deposits; (9) cause nuisance; (10) dominate the receiving water body or overlap a mixing zone from different outfalls; | high | |
| #Q074 | corrective_action | operational | mandatory | Toxicity Elimination Obligation | aquatic life | Once the source of toxicity is identified, the discharger shall take all reasonable steps necessary to eliminate toxicity. | After source of toxicity is identified via a Toxicity Reduction Evaluation (TRE) | high |
| #Q075 | monitoring | reporting | mandatory | Laboratory Calibration Standards Instruction | 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 | |
| #Q076 | operational | operational | mandatory | End-of-Pipe Effluent Limitation 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 (e.g., where the final discharge point is inaccessible, or the pollutants are so diluted by cooling water as to make monitoring impractical, or interferences among pollutants make analysis infeasible). | Except in rare situations where end-of-pipe monitoring is impractical or infeasible | high |
| #Q077 | reporting | reporting | mandatory | Mandatory Sample Result Reporting Fields | wastewater, drinking water, aquatic life | 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 | |
| #Q078 | corrective_action | operational | mandatory | Pollutant Minimization Program (PMP) Triggers | wastewater, aquatic life | Dischargers shall be required to conduct a Pollutant Minimization Program (PMP) in accordance with section 2.4.5.1 when there is evidence (e.g., sample results reported as DNQ when the effluent limitation is less than the MDL, sample results from analytical methods more sensitive than those methods included in the permit in accordance with sections 2.4.2 or 2.4.3 above, presence of whole effluent toxicity, health advisories for fish consumption, results of benthic or aquatic organism tissue sampling) 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 evidence indicates pollutant presence above limits but concentrations are below RL/MDL | high |
| #Q079 | reporting | reporting | mandatory | PMP Annual Status Report Contents | wastewater | An annual status report that shall be sent to the RWQCB including: a. All PMP monitoring results for the previous year; b. A list of potential sources of the reportable priority pollutant(s); c. A summary of all actions undertaken pursuant to the control strategy; and d. A description of actions to be taken in the following year. | Required as part of a Pollutant Minimization Program | high |
| #Q080 | administrative | operational | mandatory | Intake Water Credit Demonstration Requirements | wastewater | A RWQCB may consider priority pollutants in intake water ... provided that the discharger has demonstrated to the satisfaction of the RWQCB that the following conditions are met: (1) The observed maximum ambient background concentration ... and the intake water concentration of the pollutant exceeds the most stringent applicable criterion/objective for that pollutant; (2) The intake water credits provided are consistent with any TMDL applicable to the discharge ... (3) The intake water is from the same water body as the receiving water body ... (4) The facility does not alter the intake water pollutant chemically or physically in a manner that adversely affects water quality and beneficial uses; and (5) The timing and location of the discharge does not cause adverse effects on water quality and beneficial uses that would not occur if the intake water pollutant had been left in the receiving water body. | When seeking effluent limitations based on intake water credits | high |
| #Q081 | administrative | reporting | mandatory | Site-Specific Translator Submission Deadline | wastewater | the discharger, within a time period specified by the RWQCB not exceeding two years from the date of issuance/reissuance of the permit, submits to the RWQCB (1) the proposed translator, and (2) all data and calculations related to its derivation. | When the discharger commits to completing a site-specific translator study | high |
| #Q082 | administrative | reporting | mandatory | Application for Coverage | other | To obtain coverage under this Order, Dischargers must submit a complete application containing the following items to the San Diego Water Board: - A completed NOI form shown as Attachment B of this Order... - Payment of the annual application fee... - A Water Quality Management Plan (WQMP) as specified by section 5.4 of this Order for each waterbody; and - A Technical Report that identifies the sources for the elevated phosphorus in the waterbody... | high | |
| #Q083 | prohibition | operational | mandatory | Discharge Prohibition - Nuisance and Pollution | aquatic life, other | The discharge of lanthanum-modified clay to waters of the State in a manner causing, or threatening to cause a condition of pollution, contamination or nuisance as defined in section 13050 of the Water Code is prohibited. | high | |
| #Q084 | operational | operational | mandatory | WQMP Preparation and Implementation | other | Dischargers shall prepare and implement a WQMP to prevent or reduce the discharge of pollutants from the application of lanthanum-modified clay in compliance with the provisions of this Order. | A separate WQMP must be prepared for each waterbody that will be treated | high |
| #Q085 | administrative | operational | mandatory | Order Availability to Personnel | other | A copy of this Order shall be made available to all personnel/staff (including field staff) involved with the compliance of this Order. | high | |
| #Q086 | reporting | reporting | mandatory | Data Submission to CEDEN | other | The Discharger shall ensure that all the receiving water monitoring results are submitted to the California Environmental Data Exchange Network (CEDEN) no later than 90 days after the completion of sample analyses. | high | |
| #Q087 | reporting | operational | mandatory | Water Quality Management Log | other | The Discharger shall maintain a log for each lanthanum-modified clay application. | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | chemical | treatment | mandatory | Arsenic Ceiling Concentration | wastewater, other | MAC | <= 75 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P002 | chemical | treatment | mandatory | Cadmium Ceiling Concentration | wastewater, other | MAC | <= 85 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P003 | chemical | treatment | mandatory | Copper Ceiling Concentration | wastewater, other | MAC | <= 4300 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P004 | chemical | treatment | mandatory | Lead Ceiling Concentration | wastewater, other | MAC | <= 840 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P005 | chemical | treatment | mandatory | Mercury Ceiling Concentration | wastewater, other | MAC | <= 57 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P006 | chemical | treatment | mandatory | Molybdenum Ceiling Concentration | wastewater, other | MAC | <= 75 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P007 | chemical | treatment | mandatory | Nickel Ceiling Concentration | wastewater, other | MAC | <= 420 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P008 | chemical | treatment | mandatory | Selenium Ceiling Concentration | wastewater, other | MAC | <= 100 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P009 | chemical | treatment | mandatory | Zinc Ceiling Concentration | wastewater, other | MAC | <= 7500 mg/kg | Biosolids Feedstock Ceiling Concentrations | Biosolids that are used as a feedstock at the composting facility | high |
| #P010 | design | operational | mandatory | Surface water and well setback | other | requirement | >= 100 feet | Composting operations shall be setback at least 100 feet from the nearest surface water body and/or the nearest water supply well | A lesser setback distance may be allowed if adequate to protect water quality | high |
| #P011 | operational | operational | mandatory | Tier 1 Capacity Limit | other | requirement | < 25000 cubic yards | The facility receives, processes, and stores less than 25,000 cubic yards of a combination of allowable Tier 1 feedstocks | Tier 1 qualification requirement | high |
| #P012 | physical | treatment | mandatory | Dissolved Oxygen | wastewater | OG | >= 1.0 mg/L | Detention ponds, if used, must be managed to maintain a dissolved oxygen concentration in the upper zone (one foot) of at least 1.0 milligram per liter | Applies to detention ponds | high |
| #P013 | design | operational | mandatory | Working surface hydraulic conductivity | wastewater | requirement | <= 1.0 x 10 -5 cm/s | Working surfaces must be capable of resisting damage from the movement of equipment and weight of piles and have a hydraulic conductivity of 1.0 x 10 -5 centimeters per second (cm/s) or less | Tier 2 Only | high |
| #P014 | design | operational | mandatory | Drainage ditches hydraulic conductivity | wastewater | requirement | <= 1.0 x 10 -5 cm/s | Drainage ditches must be designed, constructed, and maintained to convey all precipitation and runoff from a 25-year, 24-hour peak storm event at a minimum, have a hydraulic conductivity of 1.0 x 10 -5 cm/s or less | Tier 2 Only | high |
| #P015 | design | operational | mandatory | Detention pond hydraulic conductivity | wastewater | requirement | <= 1.0 x 10 -6 cm/s | Detention ponds must be designed, constructed, operated, and maintained to meet a hydraulic conductivity of 1.0 x 10 -6 cm/s or less | Tier 2 Only | high |
| #P016 | operational | operational | mandatory | Default Coefficient of Variation (CV) | drinking water, wastewater, other | requirement | 0.6 unitless | Used if number of data points is less than ten or 80 percent are not detected. | Number of effluent data points < 10 or >= 80% non-detect | high |
| #P017 | operational | operational | mandatory | Default Monthly Sampling Frequency (n) | drinking water, wastewater, other | requirement | 4 samples per month | Used for calculating AMEL multipliers if actual frequency is four times a month or less. | Sampling frequency <= 4 times per month | high |
| #P018 | operational | health | mandatory | CTR Criterion-based Compliance Schedule | drinking water, wastewater | requirement | <= 5 years | Time allowed to complete actions necessary to comply with CTR criterion-based effluent limitations. | From the date of permit issuance, reissuance, or modification | high |
| #P019 | operational | health | mandatory | TMDL Development Compliance Schedule | drinking water, wastewater | requirement | <= 15 years | Time allowed to develop and adopt a TMDL and accompanying WLAs/LAs. | From the effective date of the Policy | high |
| #P020 | operational | health | mandatory | Absolute Maximum CTR Compliance Time | drinking water, wastewater | requirement | 10 years | Maximum total time allowed to establish and comply with CTR criterion-based effluent limitations. | From the effective date of the Policy | high |
| #P021 | operational | health | mandatory | Absolute Maximum TMDL Compliance Time | drinking water, wastewater | requirement | 20 years | Maximum total time allowed to develop TMDL and comply with resulting WLAs. | From the effective date of the Policy | high |
| #P022 | chemical | health | mandatory | Toxic Equivalency Factor (2,3,7,8-TetraCDD) | drinking water, wastewater | requirement | 1 unitless | Relative toxicity factor compared to 2,3,7,8-TCDD. | high | |
| #P023 | chemical | health | mandatory | Arsenic Conversion Factor (Freshwater) | drinking water, wastewater | requirement | 1.000 unitless | Factor for converting metal criterion from total recoverable to dissolved fraction. | Freshwater Acute and Chronic Criteria | high |
| #P024 | chemical | reporting | mandatory | Minimum Level (1,1 Dichloroethane, GC) | drinking water, wastewater | requirement | 0.5 ppb | Lowest quantifiable concentration for reporting and compliance purposes. | Using Gas Chromatography (GC) method | high |
| #P025 | physical | operational | mandatory | Enclosed Bay headland ratio | other | requirement | < 75 percent | Definition of enclosed bays based on narrowest distance between headlands vs greatest dimension. | Must be less than 75 percent to be considered an enclosed bay | high |
| #P026 | operational | reporting | mandatory | TCDD Monitoring Program Duration | wastewater | requirement | 3 years | Duration of effluent monitoring for TCDD congeners for major and minor dischargers. | high | |
| #P027 | operational | reporting | mandatory | TCDD Congener Monitoring Count (Major Dischargers) | wastewater | requirement | 6 samples | Total samples required over a three-year period (one dry and one wet sample per year). | Applies to major POTW and major industrial dischargers. | high |
| #P028 | operational | reporting | mandatory | TCDD Congener Monitoring Count (Minor Dischargers) | wastewater | requirement | 2 samples | Total samples required over a three-year period (one dry and one wet sample for one year). | Applies to minor POTW and minor industrial dischargers. | high |
| #P029 | microbiological | treatment | mandatory | Chronic Toxicity Test Duration (Fathead minnow) | aquatic life | requirement | 7 days | Pimephales promelas larval survival and growth test. | high | |
| #P030 | microbiological | treatment | mandatory | Chronic Toxicity Test Duration (Water flea) | aquatic life | requirement | 6 to 8 days | Ceriodaphnia dubia survival and number of young. | high | |
| #P031 | microbiological | treatment | mandatory | Chronic Toxicity Test Duration (Alga) | aquatic life | requirement | 4 days | Selenastrum capricornutum growth rate. | high | |
| #P032 | operational | reporting | mandatory | Compliance Notification Deadline | other | requirement | <= 14 days | Deadline for discharger to notify RWQCB of compliance or noncompliance following each interim date. | Following each interim date in a compliance schedule. | high |
| #P033 | operational | reporting | mandatory | Interim Date Maximum Frequency | other | requirement | <= 1 year | Maximum time allowed between interim dates in a permit compliance schedule. | Applies when compliance schedule exceeds one year. | high |
| #P034 | physical | operational | mandatory | Mixed Discharge Concentration Threshold | other | requirement | <= 5 percent | Concentration difference across a transect within two stream widths to be considered completely-mixed. | high | |
| #P035 | chemical | treatment | mandatory | Metal Conversion Factor (Copper, Freshwater Acute) | aquatic life | requirement | 0.960 unitless | Converting metal criterion from total recoverable to dissolved fraction | Freshwater Acute Criteria | high |
| #P036 | chemical | treatment | mandatory | Metal Conversion Factor (Zinc, Freshwater Acute) | aquatic life | requirement | 0.978 unitless | Converting metal criterion from total recoverable to dissolved fraction | Freshwater Acute Criteria | high |
| #P037 | chemical | health | mandatory | Toxic Equivalency Factor (2,3,4,7,8-PentaCDF) | drinking water, wastewater | requirement | 0.5 unitless | Relative toxicity factor compared to 2,3,7,8-TCDD | Chlorinated dibenzofuran congener | high |
| #P038 | chemical | health | mandatory | Toxic Equivalency Factor (OctaCDD) | drinking water, wastewater | requirement | 0.0001 unitless | Relative toxicity factor compared to 2,3,7,8-TCDD | Chlorinated dibenzodioxin congener | high |
| #P039 | operational | treatment | mandatory | Site-Specific Translator Study Deadline | wastewater | requirement | <= 2 years | Time limit for a discharger to submit a proposed translator and data after permit issuance | Discharger commits to completing a defensible site-specific translator study | high |
| #P040 | chemical | treatment | mandatory | Cadmium Conversion Factor (Freshwater Acute) | aquatic life | requirement | 0.944 unitless | Converting metal criterion from total recoverable to dissolved fraction | Based on hardness of 100 mg/l as calcium carbonate | high |
| #P041 | chemical | treatment | mandatory | Lead Conversion Factor (Freshwater Acute) | aquatic life | requirement | 0.791 unitless | Converting metal criterion from total recoverable to dissolved fraction | Based on hardness of 100 mg/l as calcium carbonate | high |
| #P042 | chemical | health | mandatory | Toxic Equivalency Factor (1,2,3,7,8-PentaCDD) | drinking water, wastewater | requirement | 1 unitless | Relative toxicity factor compared to 2,3,7,8-TCDD | Revised value from June 1997 WHO expert meeting | high |
| #P043 | chemical | reporting | mandatory | Minimum Level (1,1 Dichloroethene, GC) | drinking water, wastewater | requirement | 0.5 ppb | Reporting level for volatile substances | Using Gas Chromatography (GC) method | high |
| #P044 | operational | operational | mandatory | z-statistic for 99th percentile probability | other | requirement | 2.326 unitless | Used in ECA and MDEL multiplier calculations | high | |
| #P045 | operational | operational | mandatory | z-statistic for 95th percentile probability | other | requirement | 1.645 unitless | Used in AMEL multiplier calculations | high | |
| #P046 | chemical | health | mandatory | Toxic Equivalency Factor (1,2,3,4,7,8-HexaCDD) | drinking water, wastewater, aquatic life | requirement | 0.1 unitless | Toxic equivalency factor relative to 2,3,7,8-TCDD | high | |
| #P047 | chemical | health | mandatory | Toxic Equivalency Factor (1,2,3,6,7,8-HexaCDD) | drinking water, wastewater, aquatic life | requirement | 0.1 unitless | Toxic equivalency factor relative to 2,3,7,8-TCDD | high | |
| #P048 | chemical | treatment | mandatory | Conversion Factor (Chromium III, Freshwater Acute) | aquatic life | requirement | 0.316 unitless | Factor to convert metal criterion from total recoverable to dissolved fraction | Freshwater Acute Criteria | high |
| #P049 | chemical | treatment | mandatory | Conversion Factor (Chromium III, Freshwater Chronic) | aquatic life | requirement | 0.860 unitless | Factor to convert metal criterion from total recoverable to dissolved fraction | Freshwater Chronic Criteria | high |
| #P050 | chemical | treatment | mandatory | Conversion Factor (Copper, Saltwater Acute) | aquatic life | requirement | 0.83 unitless | Factor to convert metal criterion from total recoverable to dissolved fraction | Saltwater Acute Criteria | high |
| #P051 | chemical | treatment | mandatory | Conversion Factor (Mercury, Freshwater/Saltwater) | aquatic life | requirement | 0.85 unitless | Factor to convert metal criterion from total recoverable to dissolved fraction | Acute and Chronic Criteria | high |
| #P052 | chemical | treatment | mandatory | Conversion Factor (Nickel, Freshwater Acute) | aquatic life | requirement | 0.998 unitless | Factor to convert metal criterion from total recoverable to dissolved fraction | Freshwater Acute Criteria | high |
| #P053 | chemical | reporting | mandatory | Minimum Level (Benzene, GC) | drinking water, wastewater | requirement | 0.5 ppb | Lowest quantifiable concentration for reporting and compliance | Using Gas Chromatography (GC) technique | high |
| #P054 | chemical | reporting | mandatory | Minimum Level (Arsenic, GFAA) | drinking water, wastewater | requirement | 2 ppb | Lowest quantifiable concentration for reporting and compliance | Using Graphite Furnace Atomic Absorption (GFAA) | high |
| #P055 | chemical | reporting | mandatory | Minimum Level (Mercury, CVAA) | drinking water, wastewater | requirement | 0.2 ppb | Lowest quantifiable concentration for reporting and compliance | Using Cold Vapor Atomic Absorption (CVAA) | high |
| #P056 | operational | treatment | mandatory | Translator Derivation (Acute) | aquatic life | requirement | 90 percentile | Statistical basis for site-specific metal translator derivation | Used for translation of acute criteria | high |
| #P057 | operational | treatment | mandatory | Translator Derivation (Chronic) | aquatic life | requirement | 50 percentile | Statistical basis for site-specific metal translator derivation (median) | Used for translation of chronic criteria | high |
| #P058 | physical | operational | mandatory | Flow Frequency (1Q10) | aquatic life | requirement | 10 years | Statistical frequency for the lowest one-day flow | high | |
| #P059 | physical | operational | mandatory | Flow Duration (7Q10) | aquatic life | requirement | 7 days | Average low flow duration for statistical frequency calculation | high | |
| #P060 | physical | operational | mandatory | Completely-Mixed Discharge Width | other | requirement | 2 stream widths | Distance from discharge point within which mixing must be evaluated | high | |
| #P061 | chemical | reporting | mandatory | Semi-Volatile Organic Reporting Factor | wastewater | requirement | 1000 multiplier | Most common method-specific factor for semi-volatile organics where samples are concentrated by extraction. | Applied when determining RL from ML. | high |
| #P062 | chemical | reporting | mandatory | Pesticide Reporting Factor | wastewater | requirement | 100 multiplier | Most common method-specific factor for pesticides where samples are concentrated by extraction. | high | |
| #P063 | chemical | reporting | recommended | Matrix Interference Dilution Factor | wastewater | requirement | 10 multiplier | Treatment typically applied in cases where there are matrix-effects to dilute the sample. | Presence of matrix interferences. | high |
| #P064 | chemical | health | mandatory | Toxic Equivalency Factor (1,2,3,4,7,8-HexaCDF) | drinking water, wastewater | requirement | 0.1 unitless | Relative toxicity factor for chlorinated dibenzofurans compared to 2,3,7,8-TCDD. | high | |
| #P065 | chemical | treatment | mandatory | Silver Conversion Factor (Freshwater Acute) | aquatic life | requirement | 0.85 unitless | Recommended conversion factor for converting a metal criterion expressed as total recoverable fraction to dissolved fraction. | Freshwater Acute Criteria | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | Application Area | Is the area of the treated waterbody to which lanthanum-modified clay is directly applied. | high | |
| #D002 | Arithmetic Mean ( ̕ ) | Also called the average, is the sum of measured values divided by the number of samples. | high | |
| #D003 | 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 | |
| #D004 | 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 | |
| #D005 | 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 | |
| #D006 | Carcinogenic | Pollutants are substances that are known to cause cancer in living organisms. | high | |
| #D007 | 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 | |
| #D008 | 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). | high | |
| #D009 | 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 | |
| #D010 | 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. | high | |
| #D011 | Enclosed Bays | Enclosed Bays means indentations along the coast that enclose an area of oceanic water within distinct headlands or harbor works. | high | |
| #D012 | Estimated Chemical Concentration | The estimated chemical concentration that results from the confirmed detection of the substance by the analytical method below the minimum level (ML) value. | high | |
| #D013 | Estuaries | Estuaries means waters, including coastal lagoons, located at the mouths of streams that serve as areas of mixing for fresh and ocean waters. | high | |
| #D014 | Inland Surface Waters | All surface waters of the State of California (State) that do not include the ocean, enclosed bays, or estuaries. | high | |
| #D015 | 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 | |
| #D016 | 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 | |
| #D017 | Maximum Daily Effluent Limitation (MDEL) | 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 | |
| #D018 | Median | The middle measurement in a set of data. | high | |
| #D019 | 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 | |
| #D020 | Minimum Level (ML) | 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 | |
| #D021 | Mixing Zone | 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 waterbody. | high | |
| #D022 | Not Detected (ND) | Sample results which are less than the laboratory's MDL. | high | |
| #D023 | Persistent Pollutants | Persistent pollutants are substances for which degradation or decomposition in the environment is nonexistent or very slow. | high | |
| #D024 | 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. | high | |
| #D025 | 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). | high | |
| #D026 | 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. | high | |
| #D027 | Source of Drinking Water | Any water designated as municipal or domestic supply (MUN) in the San Diego Basin Plan. | high | |
| #D028 | Standard Deviation ( ̕ ) | Standard Deviation is a measure of variability | high | |
| #D029 | 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. | high | |
| #D030 | 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. | high | |
| #D031 | Bypass | 'Bypass' means the intentional diversion of waste streams from any portion of a treatment facility. (40 CFR § 122.41(m)(1)(i).) | high | |
| #D032 | 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 | |
| #D033 | 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 | |
| #D034 | 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 | |
| #D035 | 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 = (Σ x) / n where: Σ x is the sum of the measured ambient water concentrations, and n is the number of samples. | high | |
| #D036 | Standard Deviation ( σ ) | Standard Deviation is a measure of variability that is calculated as follows: σ = [Σ (x - µ)^2 / (n - 1)]^0.5 where: x is the observed value; µ is the arithmetic mean of the observed values; and n is the number of samples. | high | |
| #D037 | Enclosed Bays | 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 | |
| #D038 | Estuaries | 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 | |
| #D039 | 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: [formula] If n is even, then: [formula] (i.e., the midpoint between the (n/2 and ((n/2)+1))). | high | |
| #D040 | 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 | |
| #D041 | 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 | |
| #D042 | 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 | |
| #D043 | 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 | |
| #D044 | 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. | high | |
| #D045 | 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 | |
| #D046 | Category 3 | Those discharges of waste that could degrade water quality without violating water quality objectives or could cause a minor impairment of designated beneficial uses as compared with Category 1 and Category 2. | high | |
| #D047 | Category C | Any discharger for which waste discharge requirements have been prescribed pursuant to Section 13263 of the Water code not included in Category A [toxics] or Category B [non-toxic but requiring treatment]. Included are dischargers having no waste treatment systems or that must comply with best management practices, dischargers having passive treatment and disposal systems, or dischargers having waste storage systems with land disposal. | high | |
| #D048 | 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 | |
| #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 | WDID | Waste Discharge Identification | high | |
| #D051 | Hardness | a measure of divalent cations in the water. | high | |
| #D052 | WER | A WER represents the correlation between the concentration that is present (measured in water sample) and the concentration that is biologically available and toxic to aquatic life. | high | |
| #D053 | Biologically available | refers to the metal being present in its free ionic state as a dissolved metal and able to take part in the biological processes of the aquatic life. | high | |
| #D054 | Wet weather | a storm event with greater than 0.1 inch of rainfall. | high | |
| #D055 | San Diego Water Board | California Regional Water Quality Control Board, San Diego Region | high | |
| #D056 | Basin Plan | Water Quality Control Plan for the San Diego Basin | high | |
| #D057 | State Water Board | State Water Resource Control Board | high | |
| #D058 | USEPA | United States Environmental Protection Agency | high | |
| #D059 | CTR | California Toxics Rule | high | |
| #D060 | TMDLs | Total Maximum Daily Loads | high | |
| #D061 | WLAs | wasteload allocations | high | |
| #D062 | OAL | State Office of Administrative Law | high | |
| #D063 | CEQA | California Environmental Quality Act | high | |
| #D064 | WQOs | Water Quality Objectives | high | |
| #D065 | CMC | criteria maximum concentration | high | |
| #D066 | CCC | criteria continuous concentration | high | |
| #D067 | TMDL (Loading Capacity) | the maximum amount of a pollutant that a waterbody can receive and still attain water quality objectives and protection of designated beneficial uses. | high | |
| #D068 | 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 | |
| #D069 | Pollution Prevention | practices and processes that reduce or eliminate the generation of pollutants, in contrast to source control, treatment, or disposal. | high | |
| #D070 | 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 | |
| #D071 | 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 | |
| #D072 | Wet weather days | days with rainfall events of 0.2 inches or greater and the following 72 hours. | high | |
| #D073 | Dry weather days | days with less than 0.2 inch of rainfall observed on each of the previous 3 days. | high | |
| #D074 | 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 | |
| #D075 | 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 | |
| #D076 | 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 | |
| #D077 | Infrequently Used Full Body Contact | those recreation waters that are rarely or occasionally used. | high | |
| #D078 | storm water | storm water runoff, snow melt runoff, and surface runoff and drainage. | high | |
| #D079 | illicit discharge | any discharge to a storm water conveyance system that is not composed entirely of storm water except discharges pursuant to a NPDES permit and discharges resulting from fire fighting activities. | high | |
| #D080 | Copermittee | any San Diego County, Orange County, or Riverside County Copermittee covered under this Order, unless specified otherwise. | high | |
| #D081 | Persistent flow | the presence of flowing, pooled, or ponded water more than 72 hours after a measureable rainfall event of 0.1 inch or greater during three consecutive monitoring and/or inspection events. | high | |
| #D082 | Restaurants | a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption (SIC code 5812). | high | |
| #D083 | Hillside development projects | development on any natural slope that is twenty-five percent or greater. | high | |
| #D084 | Parking lots | a land area or facility for the temporary parking or storage of motor vehicles used personally, for business, or for commerce. | high | |
| #D085 | Streets, roads, highways, freeways, and driveways | any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles. | high | |
| #D086 | Automotive repair shops | a facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5541, 7532-7534, or 7536-7539. | high | |
| #D087 | Retail gasoline outlets (RGOs) | RGOs that meet the following criteria: (a) 5,000 square feet or more or (b) a projected Average Daily Traffic (ADT) of 100 or more vehicles per day. | high | |
| #D088 | escalated enforcement | any enforcement scenario where a violation or other non-compliance is determined to cause or contribute to the highest priority water quality conditions identified in the Water Quality Improvement Plan. | high | |
| #D089 | storm water | storm water runoff, snow melt runoff, and surface runoff and drainage. | high | |
| #D090 | illicit discharge | any discharge to a storm water conveyance system that is not composed entirely of storm water except discharges pursuant to a NPDES permit and discharges resulting from firefighting activities. | high | |
| #D091 | Bypass | the intentional diversion of waste streams from any portion of a treatment facility. | high | |
| #D092 | Severe property damage | substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which 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 | |
| #D093 | Upset | 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 Copermittee. 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 | |
| #D094 | Active/Passive Sediment Treatment | Using mechanical, electrical or chemical means to flocculate or coagulate suspended sediment for removal from runoff from construction sites prior to discharge. | high | |
| #D095 | Anthropogenic Litter | Trash generated from human activities, not including sediment. | high | |
| #D096 | Average Monthly Action Level | The highest allowable average of daily discharges over a calendar month. | high | |
| #D097 | Beneficial Uses | The uses of water necessary for the survival or wellbeing of man, plants, and wildlife. These uses of water serve to promote tangible and intangible economic, social, and environmental goals. 'Beneficial Uses' of the waters of the State that may be protected include, but are not limited to, domestic, municipal, agricultural and industrial supply; power generation; recreation; aesthetic enjoyment; navigation; and preservation and enhancement of fish, wildlife, and other aquatic resources or preserves. Existing beneficial uses are uses that were attained in the surface or ground water on or after November 28, 1975; and potential beneficial uses are uses that would probably develop in future years through the implementation of various control measures. 'Beneficial Uses' are equivalent to 'Designated Uses' under federal law. [California Water Code Section 13050(f)]. | high | |
| #D098 | Best Management Practices (BMPs) | Defined in 40 CFR 122.2 as schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States. BMPs also include treatment requirements, operating procedures and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. | high | |
| #D099 | Bioassessment | The use of biological community information to evaluate the biological integrity of a water body and its watershed. With respect to aquatic ecosystems, bioassessment is the collection and analysis of samples of the benthic macroinvertebrate community together with physical/habitat quality measurements associated with the sampling site and the watershed to evaluate the biological condition (i.e. biotic integrity) of a water body. | high | |
| #D100 | Biofiltration | Practices that use vegetation and amended soils to detain and treat runoff from impervious areas. Treatment is through filtration, infiltration, adsorption, ion exchange, and biological uptake of pollutants. | high | |
| #D101 | Biological Integrity | Defined in Karr J.R. and D.R. Dudley. 1981. Ecological perspective on water quality goals. Environmental Management 5:55-68 as: 'A balanced, integrated, adaptive community of organisms having a species composition, diversity, and functional organization comparable to that of natural habitat of the region.' Also referred to as ecosystem health. | high | |
| #D102 | BMP Design Manual | A plan developed to eliminate, reduce, or mitigate the impacts of runoff from development projects, including Priority Development Projects. | high | |
| #D103 | Chronic Toxicity | A measurement of sublethal effect (e.g. reduced growth, reproduction) to experimental test organisms exposed to an effluent or receiving waters compared to that of the control organisms. | high | |
| #D104 | Clean Water Act Section 303(d) Water Body | An impaired water body in which water quality does not meet applicable water quality standards and/or is not expected to meet water quality standards, even after the application of technology based pollution controls required by the CWA. The discharge of runoff to these water bodies by the Copermittees is significant because these discharges can cause or contribute to violations of applicable water quality standards. | high | |
| #D105 | Construction Activities | Actions implemented during construction of development or redevelopment projects during the Preliminary Task (including rough grading and/or disking, clearing and grubbing operations, or any soil disturbance prior to mass grading), Grading or Land Development (including topography and slope reconfiguration, alluvium removals, canyon cleanouts, rock undercuts, keyway excavations, land form grading, and stockpiling of select material for capping operations), Streets and Utility Installation (including excavation and street paving, lot grading, curbs, gutters and sidewalks, public utilities, public water facilities including fire hydrants, public sanitary sewer systems, storm sewer systems and/or other drainage improvements), or Vertical Construction (including the build out of structures from foundations to roofing, including rough landscaping). | high | |
| #D106 | Construction Site | Any project, including projects requiring coverage under the Construction General Permit, that involves soil disturbing activities including, but not limited to, clearing, grading, disturbances to ground such as stockpiling, and excavation. | high | |
| #D107 | Contamination | As defined in the Porter-Cologne Water Quality Control Act, contamination is 'an impairment of the quality of waters of the State by waste to a degree which creates a hazard to the public health through poisoning or through the spread of disease. 'Contamination' includes any equivalent effect resulting from the disposal of waste whether or not waters of the State are affected.' | high | |
| #D108 | Copermittee | A permittee to a NPDES permit that is only responsible for permit conditions relating to the discharge for which it is operator [40 CFR 122.26(b)(1)]. For the purposes of this Order, a Copermittee is one of the individual permittees identified in Tables 1a-1c of this Order. | high | |
| #D109 | Copermittees | All of the individual Copermittees, collectively. | high | |
| #D110 | Critical Channel Flow (Qc) | The channel flow that produces the critical shear stress that initiates bed movement or that erodes the toe of channel banks. When measuring Qc, it should be based on the weakest boundary material - either bed or bank. | high | |
| #D111 | Daily Discharge | Defined as either: (1) the total mass of the constituent discharged over the calendar day 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 other than a day), or by the arithmetic mean of analytical results from one or more grab samples taken over the course of a day. | high | |
| #D112 | Development Projects | Construction, rehabilitation, redevelopment, or reconstruction of any public or private projects. | high | |
| #D113 | Dry Season | May 1 to September 30. | high | |
| #D114 | Dry Weather | Weather is considered dry if the preceding 72 hours has been without measurable precipitation (>0.1 inch). | high | |
| #D115 | Enclosed Bays | Enclosed bays are 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 bay works is less than 75 percent of the greatest dimension of the enclosed portion of the bay. Enclosed bays do not include inland surface waters or ocean waters. | high | |
| #D116 | Erosion | When land is diminished or worn away due to wind, water, or glacial ice. Often the eroded debris (silt or sediment) becomes a pollutant via storm water runoff. Erosion occurs naturally but can be intensified by land clearing activities such as farming, development, road building, and timber harvesting. | high | |
| #D117 | Environmentally Sensitive Areas (ESAs) | Areas that include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Board and San Diego Water Board; State Water Quality Protected Areas; water bodies designated with the RARE beneficial use by the State Water Board and San Diego Water Board; areas designated as preserves or their equivalent under the Natural Communities Conservation Program within the Cities and County of Orange; and any other equivalent environmentally sensitive areas which have been identified by the Copermittees. | high | |
| #D118 | Estuaries | Waters, including coastal lagoons, located at the mouth of streams that serve as areas of mixing 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 ocean water. Estuaries do not include inland surface waters or ocean waters. | high | |
| #D119 | Existing Development | Any area that has been developed and exists for municipal, commercial, industrial, or residential purposes, uses, or activities. May include areas that are not actively used for its originally developed purpose, but may be re-purposed or redeveloped for another use or activity. | high | |
| #D120 | Flow Duration | The long-term period of time that flows occur above a threshold that causes significant sediment transport and may cause excessive erosion damage to creeks and streams (not a single storm event duration). The simplest way to visualize this is to consider a histogram of pre- and post-project flows using long-term records of hourly data. To maintain pre-development flow duration means that the total number of hours (counts) within each range of flows in a flow-duration histogram cannot increase between the pre- and post-development condition. Flow duration within the range of geomorphologically significant flows is important for managing erosion. | high | |
| #D121 | Grading | The cutting and/or filling of the land surface to a desired slope or elevation. | high | |
| #D122 | Groundwater | Subsurface water that occurs beneath the water table in soils and geologic formations that are fully saturated. | high | |
| #D123 | Hazardous Material | Any substance that poses a threat to human health or the environment due to its toxicity, corrosiveness, ignitability, explosive nature or chemical reactivity. These also include materials named by the USEPA in 40 CFR 116 to be reported if a designated quantity of the material is spilled into the waters of the U.S. or emitted into the environment. | high | |
| #D124 | Hazardous Waste | Hazardous waste is defined as 'any waste which, under Section 600 of Title 22 of this code, is required to be managed according to Chapter 30 of Division 4.5 of Title 22 of this code' [CCR Title 22, Division 4.5, Chapter 11, Article 1]. | high | |
| #D125 | Household Hazardous Waste | Paints, cleaning products, and other hazardous wastes generated during home improvement or maintenance activities. | high | |
| #D126 | Hydromodification | The change in the natural watershed hydrologic processes and runoff characteristics (i.e., interception, infiltration, overland flow, and groundwater flow) caused by urbanization or other land use changes that result in increased stream flows and sediment transport. In addition, alteration of stream and river channels, such as stream channelization, concrete lining, installation of dams and water impoundments, and excessive streambank and shoreline erosion are also considered hydromodification, due to their disruption of natural watershed hydrologic processes. | high | |
| #D127 | Illicit Connection | Any man-made conveyance or drainage system through which a non-storm water discharge to the storm water drainage system occurs or may occur. Any connection to the MS4 that conveys an illicit discharge. | high | |
| #D128 | Illicit Discharge | Any discharge to the MS4 that is not composed entirely of storm water except discharges pursuant to a NPDES permit and discharges resulting from firefighting activities [40 CFR 122.26(b)(2)]. | high | |
| #D129 | Inactive Areas | Areas of construction activity that are not active and those that have been active and are not scheduled to be re-disturbed for at least 14 days. | high | |
| #D130 | Infiltration | In the context of low impact development, infiltration is defined as the percolation of water into the ground. Infiltration is often expressed as a rate (inches per hour), which is determined through an infiltration test. In the context of non-storm water, infiltration is water other than wastewater that enters a sewer system (including sewer service connections and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow [40 CFR 35.2005(20)]. | high | |
| #D131 | Inland Surface Waters | Includes all surface waters of the State that do not include the ocean, enclosed bays, or estuaries. | high | |
| #D132 | Jurisdictional Runoff Management Program Document | A written description of the specific jurisdictional runoff management measures and programs that each Copermittee will implement to comply with this Order and ensure that storm water pollutant discharges in runoff are reduced to the MEP and do not cause or contribute to a violation of water quality standards. | high | |
| #D133 | Low Impact Development (LID) | A storm water management and land development strategy that emphasizes conservation and the use of on-site natural features integrated with engineered, small-scale hydrologic controls to more closely reflect pre-development hydrologic functions. | high | |
| #D134 | Low Impact Development Best Management Practices (LID BMPs) | LID BMPs include schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States through storm water management and land development strategies that emphasize conservation and the use of on-site natural features integrated with engineered, small-scale hydrologic controls to more closely reflect pre-development hydrologic functions. LID BMPs include retention practices that do not allow runoff, such as infiltration, rain water harvesting and reuse, and evapotranspiration. LID BMPs also include flow-through practices such as biofiltration that may have some discharge of storm water following pollutant reduction. | high | |
| #D135 | Major Outfall | As defined in the Code of Federal Regulations, a major outfall is a MS4 outfall that discharges from a single pipe with an inside diameter of 36 inches or more or its equivalent (i.e. discharge from a single conveyance other than a circular pipe which is associated with a drainage area of more than 50 acres); or, for MS4s that receive storm water from lands zoned for industrial activity (based on comprehensive zoning plans or equivalent), a MS4 outfall that discharges from a single pipe with an inside diameter of 12 inches or more or from its equivalent (i.e. discharge from other than a circular pipe associated with a drainage area of 2 acres or more). | high | |
| #D136 | Maximum Daily Action Level (MDAL) | The highest allowable daily discharge of a pollutant, over a calendar day (or 24 hour period). For pollutants with action levels expressed in units of mass, the daily discharge is calculated as the total mass of the pollutant discharged over the day. For pollutants with action levels expressed in other units of measurement, the daily discharge is calculated as the arithmetic mean measurement of the pollutant over the day. | high | |
| #D137 | Maximum Extent Practicable (MEP) | The technology-based standard established by Congress in CWA section 402(p)(3)(B)(iii) for storm water that operators of MS4s must meet. Technology-based standards establish the level of pollutant reductions that dischargers must achieve, typically by treatment or by a combination of source control and treatment control BMPs. | high | |
| #D138 | Monitoring Year | October 1 to September 30 | high | |
| #D139 | Municipal Separate Storm Sewer System (MS4) | A conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): (i) Owned or operated by a State, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, storm water, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or designated and approved management agency under section 208 of the CWA that discharges to waters of the United States; (ii) Designated or used for collecting or conveying storm water; (iii) Which is not a combined sewer; (iv) Which is not part of the Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.26. | high | |
| #D140 | National Pollutant Discharge Elimination System (NPDES) | The national program for issuing, modifying, revoking and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of the CWA. | high | |
| #D141 | Non-Storm Water | All discharges to and from a MS4 that do not originate from precipitation events (i.e., all discharges from a MS4 other than storm water). Non-storm water includes illicit discharges and NPDES permitted discharges. | high | |
| #D142 | Nuisance | As defined in the Porter-Cologne Water Quality Control Act, a nuisance is 'anything which meets all of the following requirements: 1) Is injurious to health, or is indecent, or offensive to the senses, or an obstruction to the free use of property, so as to interfere with the comfortable enjoyment of life or property. 2) Affects at the same time an entire community or neighborhood, or any considerable number of persons, although the extent of the annoyance or damage inflicted upon individuals may be unequal. 3) Occurs during, or as a result of, the treatment or disposal of wastes.' | high | |
| #D143 | Ocean Waters | The territorial marine waters of the State as defined by California law to the extent these waters are outside of enclosed bays, estuaries, and coastal lagoons. Discharges to ocean waters are regulated in accordance with the State Board's California Ocean Plan. | high | |
| #D144 | Order | Unless otherwise specified, refers to this Order, Order No. R9-2013-0001 (NPDES No. CAS0109266) | high | |
| #D145 | Outfall | Outfall means a point source as defined by 40 CFR 122.2 at the point where a municipal separate storm sewer discharges to waters of the US and does not include open conveyances connecting two municipal separate storm sewers, or pipes, tunnels or other conveyances which connect segments of the same stream or other waters of the US and are used to convey waters of the US. | high | |
| #D146 | Persistent Flow | Persistent flow is defined as the presence of flowing, pooled, or ponded water more than 72 hours after a measureable rainfall event of 0.1 inch or greater during three consecutive monitoring and/or inspection events. All other flowing, pooled, or ponded water is considered transient. | high | |
| #D147 | Person | A person is defined as an individual, association, partnership, corporation, municipality, State or Federal agency, or an agent or employee thereof [40 CFR 122.2]. | high | |
| #D148 | Point Source | Any discernible, confined, and discrete conveyance, including, but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operations, landfill leachate collection systems, vessel, or other floating craft from which pollutants are or may be discharged. This term does not include return flows from irrigated agriculture or agricultural storm water runoff. | high | |
| #D149 | Pollutant | Any agent that may cause or contribute to the degradation of water quality such that a condition of pollution or contamination is created or aggravated. | high | |
| #D150 | Pollution | As defined in the Porter-Cologne Water Quality Control Act, pollution is 'the alteration of the quality of the waters of the State by waste, to a degree which unreasonably affects either of the following: 1) The waters for beneficial uses; or 2) Facilities that serve these beneficial uses.' Pollution may include contamination. | high | |
| #D151 | Pollution Prevention | Pollution prevention is defined as practices and processes that reduce or eliminate the generation of pollutants, in contrast to source control BMPs, treatment control BMPs, or disposal. | high | |
| #D152 | Pre-Development Runoff Conditions | Approximate flow rates and durations that exist or existed onsite before land development occurs. For new development projects, this equates to runoff conditions immediately before project construction. For redevelopment projects, this equates to runoff conditions from the project footprint assuming infiltration characteristics of the underlying soil, and existing grade. Runoff coefficients of concrete or asphalt must not be used. | high | |
| #D153 | Priority Development Projects | New development and redevelopment projects defined under Provision E.3.b of Order No. R9-2013-0001, as amended by Order Nos. R9-2015-0001 and R9-2015-0100. | high | |
| #D154 | Rainy Season (aka Wet Season) | October 1 to April 30 | high | |
| #D155 | Receiving Waters | Waters of the United States. | high | |
| #D156 | Receiving Water Limitations | Waste discharge requirements issued by the San Diego Water Board typically include both: (1) 'Effluent Limitations' (or 'Discharge Limitations') that specify the technology-based or water-quality-based effluent limitations; and (2) 'Receiving Water Limitations' that specify the water quality objectives in the Basin Plan as well as any other limitations necessary to attain those objectives. | high | |
| #D157 | Redevelopment | The creation and/or replacement of impervious surface on an already developed site. Examples include the expansion of a building footprint, road widening, the addition to or replacement of a structure. Replacement of impervious surfaces includes any activity where impervious material(s) are removed, exposing underlying soil during construction. | high | |
| #D158 | Regional Clearinghouse | A central location for the collection and distribution of information developed and maintained by the Copermittees including, but not limited to, plans, reports, manuals, data, contact information, and/or links to such documents and information. | high | |
| #D159 | Rehabilitation | Remedial measures or activities for the purpose of improving or restoring the beneficial uses of streams, channels or river systems. Techniques may vary from in-stream restoration techniques to off-line storm water management practices installed in the system corridor or upland areas, or a combination of in-stream and out of stream techniques. | high | |
| #D160 | Reporting Period | The period of information that is reported in the Water Quality Improvement Plan Annual Report. The reporting period consists of two components: 1) July 1 to June 30, consistent with the fiscal year, for the implementation of the jurisdictional runoff management programs, and 2) October 1 to September 30, consistent with the monitoring year for the monitoring and assessment programs. | high | |
| #D161 | Retain | Keep or hold in a particular place, condition, or position without discharge to surface waters. | high | |
| #D162 | Retrofitting | Storm water management practice put into place after development has occurred in watersheds where the practices previously did not exist or are ineffective. Retrofitting of developed areas is intended to improve water quality, protect downstream channels, reduce flooding, or meet other specific objectives. | high | |
| #D163 | Runoff | All flows in a storm water conveyance system that consists of the following components: (1) storm water (wet weather flows) and (2) non-storm water including dry weather flows. | high | |
| #D164 | San Diego Water Board | As used in this document the term "San Diego Water Board" is synonymous with the term "Regional Board" as defined in Water Code section 13050(b) and is intended to refer to the California Regional Water Quality Control Board for the San Diego Region as specified in Water Code Section 13200. | high | |
| #D165 | Sediment | Soil, sand, and minerals washed from land into water. Sediment resulting from anthropogenic sources (i.e. human induced land disturbance activities) is considered a pollutant. This Order regulates only the discharges of sediment from anthropogenic sources and does not regulate naturally occurring sources of sediment. | high | |
| #D166 | Source Control BMP | Land use or site planning practices, or structural or nonstructural measures that aim to prevent runoff pollution by reducing the potential for contamination at the source of pollution. Source control BMPs minimize the contact between pollutants and runoff. | high | |
| #D167 | Storm Water | Per 40 CFR 122.26(b)(13), means storm water runoff, snowmelt runoff and surface runoff and drainage. Surface runoff and drainage pertains to runoff and drainage resulting from precipitation events. | high | |
| #D168 | Structural BMPs | A subset of BMPs which detains, retains, filters, removes, or prevents the release of pollutants to surface waters from development projects in perpetuity, after construction of a project is completed. | high | |
| #D169 | Test of Significant Toxicity (TST) | A statistical approach used to analyze toxicity test data. The TST incorporates a restated null hypothesis, Welch's t-test, and biological effect thresholds for chronic and acute toxicity. | high | |
| #D170 | Total Maximum Daily Load (TMDL) | The maximum amount of a pollutant that can be discharged into a water body from all sources (point and non-point) and still maintain water quality standards. | high | |
| #D171 | Toxicity | Adverse responses of organisms to chemicals or physical agents ranging from mortality to physiological responses such as impaired reproduction or growth anomalies. | high | |
| #D172 | Toxicity Identification Evaluation (TIE) | A set of procedures for identifying the specific chemical(s) responsible for toxicity. These procedures are performed in three phases (characterization, identification, and confirmation) using aquatic organism toxicity tests. | high | |
| #D173 | Toxicity Reduction Evaluation (TRE) | 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. | high | |
| #D174 | Treatment Control BMP | Any engineered system designed to remove pollutants by simple gravity settling of particulate pollutants, filtration, biological uptake, media absorption or any other physical, biological, or chemical process. | high | |
| #D175 | Unpaved Road | Any long, narrow stretch without pavement used for traveling by motor passenger vehicles between two or more points. Unpaved roads are generally constructed of dirt, gravel, aggregate or macadam and may be improved or unimproved. | high | |
| #D176 | Waste | As defined in CWC Section 13050(d), 'waste includes sewage and any and all other waste substances, liquid, solid, gaseous, or radioactive, associated with human habitation, or of human or animal origin, or from any producing, manufacturing, or processing operation, including waste placed within containers of whatever nature prior to, and for purposes of, disposal.' | high | |
| #D177 | Water Quality Objective | Numerical or narrative limits on constituents or characteristics of water designated to protect designated beneficial uses of the water. [California Water Code Section 13050 (h)]. | high | |
| #D178 | Water Quality Standards | Water quality standards, as defined in Clean Water Act section 303(c) consist of the beneficial uses (e.g., swimming, fishing, municipal drinking water supply, etc.,) of a water body and criteria (referred to as water quality objectives in the California Water Code) necessary to protect those uses. Under the Water Code, the water boards establish beneficial uses and water quality objectives in water quality control or basin plans. Together with an anti-degradation policy, these beneficial uses and water quality objectives serve as water quality standards under the Clean Water Act. | high | |
| #D179 | Waters of the State | Any water, surface or underground, including saline waters within the boundaries of the State [CWC section 13050 (e)]. | high | |
| #D180 | Waters of the United States | As defined in the 40 CFR 122.2, the Waters of the U.S. are defined as: '(a) All waters, which are currently used, were used in the past, or may be susceptible to use in interstate or foreign commerce... (b) All interstate waters, including interstate 'wetlands;' (c) All other waters such as intrastate lakes, rivers, streams... (d) All impoundments of waters otherwise defined as waters of the United States... (e) Tributaries... (f) The territorial seas; and (g) 'Wetlands' adjacent to waters...' | high | |
| #D181 | Watershed | That geographical area which drains to a specified point on a water course, usually a confluence of streams or rivers (also known as drainage area, catchment, or river basin). | high | |
| #D182 | Wet Season (aka Rainy Season) | October 1 to April 30 | high | |
| #D183 | Wet Weather | Weather is considered wet up to 72 hours after a storm event of 0.1 inches and greater, unless otherwise defined by another regulatory mechanism (e.g. a TMDL). | high |