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Document ID us-ornncgwdrdfbbmrfaswwsdr-2019-10-09 Title ORDER R9-2019-0008 NPDES NO. CAG719001 GENERAL WASTE DISCHARGE REQUIREMENTS FOR DISCHARGES FROM BOATYARDS AND BOAT MAINTENANCE AND REPAIR FACILITIES ADJACENT TO SURFACE WATERS WITHIN THE SAN DIEGO REGION URL https://www.ecfr.gov/current/title-40/chapter-I/subchapter-N/part-439 Jurisdiction /us Subdomain(s) none Language Status completed Analyzed at 2026-05-13 12:43:46.021536+00:00 Relevance inventory_targeted_fetch

Q Qualitative Requirements (36)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#R001prohibitionoperationalmandatoryProhibition of Specific Industrial Waste Dischargewastewater, aquatic lifeThe dumping, deposition or discharge of the following wastes from land, docks, or boats directly into receiving waters, or adjacent to such waters in any manner that may allow its being transported into the waters is prohibited: Paint chips; Blasting materials; Paint overspray; Paint spills; Water contaminated with abrasive blast materials, paint, oils, fuels, lubricants, solvents, or petroleum; Hydro-blast water; Tank cleaning water used to remove sludge and/or dirt; Clarified water from oil and water separators, except for storm water discharges treated by an oil and water separator and reported by the Discharger to the San Diego Water Board; Steam cleaning water; Pipe and tank hydrostatic test water; Saltbox water; Hydraulic oil leaks and spills; Fuel leaks and spills; Trash; Refuse and rubbish including, but not limited to, any cans, bottles, paper, plastic, vegetable matter, or dead animals deposited or caused to be deposited by human activities; Fiberglass dust; Swept materials; Ship repair and maintenance activity debris; Waste zinc plates; Marine fouling organisms except the discharge of marine fouling organism removed from unpainted, uncoated surfaces by underwater operations; Demineralizer and reverse osmosis brine; Oily bilge water; Materials of petroleum origin in sufficient quantities to be visible; and Polychlorinated biphenyl compounds, such as those used for transformer fluid.high
#R002prohibitiontreatmentmandatoryStorm Water First Flush ProhibitionwastewaterThe discharge of the first flush of storm water from each storm (first 0.25 inches of rainfall) from maintenance and repair areas, storage areas, or other onsite locations where industrial activity may occur (including floating drydocks, if any) is prohibited.During storm events producing at least 0.25 inches of rainfallhigh
#R003operationaltreatmentmandatoryFloating Drydock Deck Cleaning RequirementwastewaterPrior to submergence, or flooding, the entire area of the floating drydock deck shall be cleaned by scraping, broom cleaning, and power and pressure washing or other effective best management practices (BMPs) as soon as practical.Prior to drydock submergence or floodinghigh
#R004operationaloperationalmandatorySWPPP Development and MaintenancewastewaterThe Discharger shall develop, implement, and maintain a Storm Water Pollution Prevention Plan (SWPPP) consistent with the requirements of Attachment J of this General Order. The SWPPP shall address all areas on which industrial activities occur (including floating drydocks, if any).Required for all enrolled facilities unless qualifying for NEChigh
#R005administrativereportingmandatoryVessel Owner Notification and EnforcementotherThe Discharger shall develop and implement a method of notifying the owner/operator of each vessel at the Dischargers leasehold of their obligation to prevent the discharge of waste and to comply with Basin Plan Prohibitions regarding the discharge of sewage from vessels as stated below. The Discharger shall have a method of enforcing these requirements.Applicable to all vessels at the discharger's leaseholdhigh
#R006corrective_actionoperationalmandatoryLevel 1 NAL Exceedance Response ActionswastewaterIn the event that sampling results indicate that an Instantaneous Maximum or Annual Average NAL is exceeded, the Discharger shall immediately have Level 1 status for any and all parameters exceeded. Within 60 days of obtaining Level 1 status the Discharger shall do the following: Evaluate industrial pollutant sources and the Storm Water Pollution Prevention Plan (SWPPP) to identify where additional operational source control BMPs and/or SWPPP implementation measures are necessary to prevent or reduce industrial pollutants.Triggered by NAL exceedancehigh
#R007designoperationalmandatoryClimate Change Protection for Treatment Facilitieswastewater, aquatic lifeAll waste and storm water treatment, containment and disposal facilities shall be protected against regional impacts due to climate change including but not limited to sea level rise, coastal water surges, changes in receiving water chemistry and the gradual warming of water body temperatures.high
#R008monitoringoperationalmandatoryWeekly BMP InspectionswastewaterThe Discharger shall conduct BMP Inspections of all work areas within its Facility for the proper implementation of BMPs and the presence of unauthorized non-storm water discharges to waters of the United States other than those to the sanitary sewer system. BMP Inspections shall be conducted on a weekly basis all year round.Applicable to all work areas within the leaseholdhigh
#R009administrativereportingmandatoryMaintenance of Hazardous Materials RecordsotherThe Discharger shall maintain records of the hazardous materials used at its Facility over the previous 5-year period and make these records available to the San Diego Water Board upon request.high
#R010operationaltreatmentmandatoryMaintenance Area Isolation and Run-on PreventionwastewaterAppropriate means, such as but not limited to berms, shall be used to isolate the Facility's maintenance/repair area(s) to prevent storm water run-on from commingling with the industrial storm water discharge from the maintenance/repair area, and to prevent storm water runoff to offsite areas.high
#R011reportingreportingmandatoryFloating Drydock Flooding NotificationotherThe Discharger shall provide written notification to the San Diego Water Board 48 hours prior to flooding of its floating drydock.Prior to each drydock flooding eventhigh
#R012administrativereportingmandatoryNotice of Intent SubmissionotherAny person proposing to discharge industrial storm water runoff from a boatyard or a boat maintenance and repair facility located adjacent to a surface water in the San Diego Region shall submit a completed Notice of Intent (NOI) Form (Attachment G) with filing fee for coverage under this General Order and obtain authorization from the San Diego Water Board prior to discharging industrial storm water runoff.Required for new dischargers and existing dischargers transitioning from Order R9-2013-0026high
#R013administrativereportingmandatoryTransfer of Ownership NotificationotherThe enrolled Discharger must submit an NOT to the San Diego Water Board in the event of any change in control or ownership of land or waste discharge facilities presently owned or controlled by the enrolled Discharger.high
#R014prohibitionunknownmandatoryProhibition of Water Quality Standard Violationsaquatic life, recreational waterThe discharge of wastes that cause or contribute to the violation of water quality standards (designated beneficial uses and water quality objectives developed to protect beneficial uses) is prohibited.high
#R015treatmenttreatmentmandatoryDisposal of Solids ApprovalwastewaterCollected screenings, sludges, and other solids removed from liquid wastes, shall be disposed in a manner approved by the San Diego Water Board.high
#R016monitoringoperationalmandatoryFlow Measurement Device CalibrationotherAll flow measurement devices shall be calibrated at least once per year, or more frequently, to ensure continued accuracy of the devices (i.e., no more than 12 months between calibrations for the flow measurement devises).high
#R017reportingreportingmandatoryInitial Investigation TRE Work Plan SubmissionwastewaterThe Discharger shall prepare and submit a copy of the Discharger's Initial Investigation TRE Work Plan to the San Diego Water Board within 90 days of the effective date of this General Order.Not required for facilities with NEC coveragehigh
#R018monitoringreportingmandatoryReceiving Water and Sediment Monitoring Plan Submissionaquatic lifeThe Discharger shall prepare and submit a Water and Sediment Monitoring Plan to assess compliance with Receiving Water Limitations of this General Order. The Water and Sediment Monitoring Plan shall be submitted within 12 months of the effective date of this General Order.Applicable to Category 1 Dischargershigh
#R019reportingreportingmandatoryDrydock Digital DocumentationotherThe Discharger shall document the condition of its floating drydock prior to each flooding. The conditions shall be digitally documented either by video or photographs.Prior to each drydock flooding eventhigh
#R020corrective_actionoperationalmandatoryLevel 2 NAL Exceedance Response ActionswastewaterIn any subsequent reporting year that sampling indicates a Discharger in Level 1 status exceeds an Instantaneous Maximum or Annual Average NAL the Discharger shall immediately have Level 2 status for all parameters exceeded. As soon as practicable after obtaining Level 2 status, the Discharger shall evaluate industrial pollutant sources and the SWPPP to identify locations and install structural and/or treatment control BMPs as necessary to prevent or reduce industrial pollutants in industrial storm water discharges in compliance with BAT/BCT. The Discharger shall prepare, certify, and submit by August 1 of the following reporting year an NAL Level 2 Exceedance Report.Triggered by NAL exceedance while in Level 1 statushigh
#R021designoperationalmandatoryTreatment BMP Design Frequency StandardwastewaterAll treatment BMPs for any pollutant shall be designed for no less than a 5-year frequency, 24-hour storm event.Applicable to all treatment-based best management practiceshigh
#R022administrativereportingmandatoryOnsite Permit and NOA AvailabilityotherA copy of this General Order and the NOA shall be maintained onsite at the facility, and shall be available to San Diego Water Board, State Water Board, and USEPA personnel and/or their authorized representative at all times.high
#R023reportingreportingmandatoryAnnual NEC Coverage RecertificationotherBy August 1 of each reporting year beginning in 2020, any Discharger who has previously registered for NEC coverage shall annually submit and certify an NEC Annual Certification Report prepared and certified by a California licensed professional engineer, competent and proficient in the fields pertinent to the report and qualified to prepare such report.Required for facilities operating under No Exposure Certificationhigh
#R024operationaltreatmentmandatoryLaboratory Quality Assurance Plan RequirementotherThe Discharger shall have, and implement, an acceptable written quality assurance (QA) plan for laboratory analyses.high
#R025monitoringoperationalmandatoryMonthly Storm Water Discharge Visual ObservationswastewaterThe Discharger shall visually observe storm water discharges from the first QSE in each month of the wet season (October 1 through April 30). These visual observations shall occur at all discharge locations during the first hour of discharge.Occurs during the wet season (October to April)high
#R026prohibitiontreatmentmandatoryDrydock Ballast and Flood Water Byproduct ProhibitionwastewaterThe discharge of sediment, chlorine, biocides, or other maintenance byproducts from the floating drydock ballast tanks or in the flood water is prohibited.Applicable to floating drydock operationshigh
#R027prohibitiontreatmentmandatoryRecycled Water Discharge ProhibitionwastewaterIf a Discharger reuses or recycles stored or contained industrial storm water in processing activities (e.g., hydrowashing vessels, general vessel washdown, etc.), then the reused/recycled water shall be considered industrial process water and is prohibited from discharge to waters of the United States and/or State under this General Order.Applies if storm water is reused/recycled for processing activitieshigh
#R028operationaltreatmentmandatoryVessel General Permit BMP IncorporationwastewaterThe Discharger shall incorporate applicable BMPs from USEPA's Vessel General Permit for Discharges Incidental to the Normal Operation of Vessels (Vessel General Permit or VGP), effective December 19, 2013, into the SWPPP.Required for SWPPP completenesshigh
#R029operationalreportingmandatoryLaboratory Certification RequirementotherAll analyses shall be performed in a laboratory certified to perform such analyses by the State Water Resource Control Board (State Water Board), Division of Drinking Water (DDW) or a laboratory approved by the San Diego Water Board.Applicable to all regulatory analyses required by the Orderhigh
#R030administrativereportingmandatoryFloating Drydock Ballast Tank CertificationotherIf the Discharger installs a new floating drydock at the Facility, the Discharger shall submit United States Navy and ASTM reports certifying the integrity of the floating drydock ballast tanks annually, in accordance with Table E-6 of this MRP.Applies if a new floating drydock is installedhigh
#R031prohibitiontreatmentmandatoryNarrative Waste Discharge Specificationsaquatic lifeWaste discharged must be free of: i. Material that is floatable or will become floatable upon discharge. ii. Settleable material or substances that may form sediments that will degrade benthic communities or other aquatic life. iii. Substances that will accumulate to toxic levels in marine waters, sediments, or biota. iv. Substances that significantly decrease the natural light to benthic communities and other marine life. v. Materials that result in aesthetically undesirable discoloration of the ocean surface.high
#R032administrativereportingmandatoryEnrollment Modification Procedural RequirementsotherThe Discharger may submit a written request for modification of an NOA to the San Diego Water Boar . The request for NOA mo ification shall inclu e 'Request for NOA Amen ment' in the subject line; the Waste Discharge I entification Number (WDID) assigned to the Discharger in the original NOA; the name and address of the Discharger; the name and address of the facility; and all of the information the Discharger believes is necessary for the San Diego Water Board to evaluate the request for modification; and shall be signed and certified by the Discharger in accordance with the signatory requirements in section V.B of the Standard Provisions (Attachment D) of this General Order.If the discharger chooses to request a modification of the NOAhigh
#R033reportingreportingmandatorySpill and Illicit Discharge Logging and Reportingwastewater, otherThe Discharger shall log and report all spills and illicit discharges to surface water originating within and/or from its leasehold. The Spill/ Illicit Discharge Log shall be submitted annually in accordance with Table E-6 of this MRP.high
#R034reportingtreatmentmandatorySWPPP Submission DeadlinewastewaterA completed copy of the SWPPP shall be submitted to the San Diego Water Board within 90 days of the effective date for this General Order or of submission of an NOA.Applicable to new or re-enrolling facilitieshigh
#R035reportingreportingmandatoryCEDEN Data Upload RequirementotherThe Discharger shall upload receiving water and sediment monitoring results to CEDEN no later than 90 days after the completion of monitoring.Applicable following completion of required monitoringhigh
#R036corrective_actionunknownmandatoryDuty to Mitigate Adverse Environmental Impactswastewater, aquatic lifeThe Discharger shall take all reasonable steps to minimize or correct any adverse impact on the environment resulting from noncompliance with this General Order or the NOA, including such accelerated or additional monitoring as may be necessary to determine the nature, and effect of the noncomplying discharge.Triggered by noncompliance with the Order or NOAhigh

P Quantitative Requirements (46)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#R037operationaltreatmentmandatoryNEC Temporary Shelter Time Limitotherrequirement90 daysMaximum duration for temporary shelter under No Exposure Certification (NEC)Shelter used due to facility construction or remodelinghigh
#R038operationalreportingmandatoryFlow Measurement Accuracy Requirementotherrequirement+/- 5 percentAccuracy requirement for flow measurement devicesDeviation from true discharge rates throughout the range of expected volumeshigh
#R039operationalreportingmandatoryQA Duplicate Analysis Frequencyotherrequirement10 percentMinimum frequency for duplicate chemical analysesBased on the number of samples collectedhigh
#R040operationaltreatmentmandatoryToxicity Sample Holding Time Maximumwastewaterrequirement72 hoursAbsolute maximum holding time for toxicity test initiationTime elapsed between conclusion of sample collection and test initiationhigh
#R041chemicalhealthmandatoryChronic Toxicity MDEL (Ballast and Flood Water)wastewater, aquatic lifeMAC< 50 % effectMaximum Daily Effluent Limitation for drydock ballast and flood waterExceeded when test results in a 'Fail' and percent effect is >= 50% using TST approachhigh
#R042microbiologicalhealthmandatoryShellfish Harvesting Total Coliform Exceedance Limitrecreational water, otherMAC230 organisms per 100 mLReceiving water limit for shellfish harvesting areasNot more than 10 percent of samples collected during any 30-day period shall exceed this valuehigh
#R043microbiologicalhealthmandatoryFish Handling E. coli Density LimitotherMAC7 organisms per mLSan Diego Bay waters used for whole fish handlingShall not be exceeded in more than 20 percent of any 20 daily consecutive sampleshigh
#R044chemicalhealthmandatoryAnnual Mean Dissolved Oxygen (Bays)aquatic lifeMAC7 mg/LAnnual mean objective for bays, estuaries, and lagoonsShall not be less than this value more than 10% of the timehigh
#R045microbiologicalhealthmandatoryOcean Total Coliform Geometric Meanrecreational waterMAC1000 per 100 mlOcean water contact sports areas (REC-1)30-day geometric mean based on five most recent sampleshigh
#R046microbiologicalhealthmandatoryOcean Fecal Coliform Geometric Meanrecreational waterMAC200 per 100 mlOcean water contact sports areas (REC-1)30-day geometric mean based on five most recent sampleshigh
#R047microbiologicalhealthmandatoryOcean Enterococcus Geometric Meanrecreational waterMAC35 per 100 mlOcean water contact sports areas (REC-1)30-day geometric mean based on five most recent sampleshigh
#R048microbiologicalhealthmandatoryOcean Total Coliform Single Sample Maxrecreational waterMAC10000 per 100 mlOcean water contact sports areas (REC-1)Single sample maximum limithigh
#R049microbiologicalhealthmandatoryOcean Fecal Coliform Single Sample Maxrecreational waterMAC400 per 100 mlOcean water contact sports areas (REC-1)Single sample maximum limithigh
#R050microbiologicalhealthmandatoryOcean Enterococcus Single Sample Maxrecreational waterMAC104 per 100 mlOcean water contact sports areas (REC-1)Single sample maximum limithigh
#R051physicalaestheticmandatoryLagoon Transparency Limitaquatic liferequirement50 percentTransparency objective for lagoons and estuariesShall not be less than 50% of the depth at locations where measurement is made by means of a standard Secchi diskhigh
#R052physicalaestheticmandatoryShallow Water Transparency (San Diego Bay)aquatic liferequirement80 percentMinimum transparency for San Diego Bay waters less than 10 feet deepSecchi disk reading shall not be less than 80 percent of the depth in more than 20 percent of the readingshigh
#R053operationalreportingmandatoryLaboratory QA Success Rateotherrequirement>= 80 percentQuality assurance success rate for duplicate chemical analysesLaboratory must maintain this success rate for duplicate/spiked analyseshigh
#R054chemicalhealthmandatoryOcean Dissolved Oxygen Maximum Depressionaquatic liferequirement10 percentReceiving water limitation for ocean watersShall not be depressed more than 10 percent from that which occurs naturallyhigh
#R055physicalhealthmandatoryOcean pH Maximum Changeaquatic liferequirement0.2 unitsReceiving water limitation for ocean watersShall not be changed more than 0.2 units from that which occurs naturallyhigh
#R056microbiologicalhealthmandatoryOcean Total Coliform Limit (Ratio Based)recreational waterMAC1000 per 100 mlOcean single sample maximum for REC-1 watersApplies when the fecal coliform/total coliform ratio exceeds 0.1high
#R057chemicalreportingmandatoryRoutine Notification Level - Toxic Pollutantswastewaterrequirement100 μg/LNotification requirement for manufacturing, commercial, mining, and silvicultural dischargersRoutine or frequent basis discharge of toxic pollutants not limited in the permithigh
#R058chemicalreportingmandatoryNon-Routine Notification Level - Toxic Pollutantswastewaterrequirement500 μg/LNotification requirement for non-routine or infrequent toxic pollutant dischargesApplies to pollutants not limited in the permithigh
#R059operationalreportingmandatoryFlow Device Calibration Frequencyotherrequirement12 monthsCalibration requirement for flow measurement devicesCalibration must occur at least once per yearhigh
#R060operationalreportingmandatoryIndividual Permit Duration Thresholdwastewaterrequirement3 yearsCriterion for potential individual NPDES permit requirementWhen the duration of a discharge exceeds this valuehigh
#R061physicalaestheticmandatoryTurbidity Increase (Low Natural Turbidity)aquatic liferequirement<= 20 percentIncrease attributable to controllable factors when natural turbidity is 0 to 50 NTUhigh
#R062physicalaestheticmandatoryTurbidity Increase (Medium Natural Turbidity)aquatic liferequirement<= 10 NTUIncrease attributable to controllable factors when natural turbidity is 50 to 100 NTUhigh
#R063physicalaestheticmandatoryTurbidity Increase (High Natural Turbidity)aquatic liferequirement<= 10 percentIncrease attributable to controllable factors when natural turbidity is greater than 100 NTUhigh
#R064physicalhealthmandatoryTreated Sewage Discharge Depth Thresholdotherrequirement30 feetMinimum water depth at MLLW for discharge of treated sewage in San Diego BayDischarge is prohibited in areas less than 30 feet deephigh
#R065operationaltreatmentmandatoryQSE Preceding Dry Periodwastewaterrequirement>= 48 hoursDuration of period with no discharge required to define a Qualifying Storm Event (QSE)high
#R066operationalreportingmandatoryDrydock Flooding Notification Lead Timewastewaterrequirement48 hoursWritten notification requirement prior to flooding of a floating drydockhigh
#R067chemicalreportingmandatoryRoutine Notification Level - Acrolein and Acrylonitrilewastewaterrequirement200 μg/LNotification level for specific toxic pollutants discharged on a routine or frequent basishigh
#R068chemicalreportingmandatoryRoutine Notification Level - Dinitrophenolswastewaterrequirement500 μg/LNotification level for 2,4-dinitrophenol and 2-methyl-4,6-dinitrophenolhigh
#R069chemicalreportingmandatoryRoutine Notification Level - Antimonywastewaterrequirement1 mg/LNotification level for antimony discharged on a routine or frequent basishigh
#R070chemicalhealthmandatoryDissolved Oxygen Time Frequency Toleranceaquatic liferequirement<= 10 percentAllowable time frequency for Dissolved Oxygen to be below the 7 mg/L annual mean objectivehigh
#R071operationalreportingmandatoryMonitoring Record Retention Periodotherrequirement>= 5 yearsMinimum duration for retaining records of all monitoring informationIncludes calibration, maintenance, reports, and application datahigh
#R072operationaloperationalmandatorySpecies Sensitivity Rescreening Frequencywastewaterrequirement24 monthsFrequency for species sensitivity screening for chronic toxicity testsDischarger shall rescreen with the marine vertebrate, invertebrate, and alga species and continue with the most sensitivehigh
#R073operationalreportingmandatoryCEDEN Data Upload Deadlineotherrequirement90 daysDeadline for uploading receiving water and sediment monitoring results to CEDENAfter the completion of monitoringhigh
#R074operationaloperationalmandatoryIndustrial Storm Water Visual Observation Timingwastewaterrequirement1 hourPeriod during which visual observations of storm water discharges must occurDuring the first hour of discharge for the first QSE in each month of the wet seasonhigh
#R075operationaloperationalmandatoryIndustrial Storm Water Grab Sampling Windowwastewaterrequirement4 hoursTime window for collecting grab samples of industrial storm waterDuring the first four hours of discharge to waters of the U.S. or conveyance systemshigh
#R076microbiologicalhealthmandatoryShellfish Harvesting Coliform Limit (Three-Tube Test)aquatic lifeMAC330 organisms per 100 mLReceiving water total coliform limit for shellfish harvesting areas when specific test method is usedLimit not to be exceeded by more than 10 percent of samples collected during any 30-day periodhigh
#R077chemicalreportingmandatoryNon-Routine Notification Level - Antimonywastewaterrequirement1 mg/LNotification requirement for non-routine or infrequent toxic pollutant dischargesApplies to antimony if not limited in the General Orderhigh
#R078operationaloperationalmandatoryBMP Inspection Frequencywastewaterrequirement1 weekFrequency for conducting Best Management Practice inspectionsInspections of all work areas within the Facilityhigh
#R079microbiologicalhealthmandatoryOcean Bacterial Indicator Ratio Thresholdrecreational waterrequirement0.1 ratioRatio of fecal coliform to total coliform densityTotal coliform density shall not exceed 1,000 per 100 ml when this ratio is exceededhigh
#R080chemicalreportingmandatoryRoutine Notification Multiplierwastewaterrequirement5 times maximum concentration valueNotification level based on reported values in the ROWDRoutine or frequent basis discharge of toxic pollutantshigh
#R081chemicalreportingmandatoryNon-Routine Notification Multiplierwastewaterrequirement10 times maximum concentration valueNotification level based on reported values in the ROWDNon-routine or infrequent basis discharge of toxic pollutantshigh
#R082microbiologicaloperationalmandatoryBacterial Analysis Dilution Rangeotherrequirement2 - 16000 CFURequired dilution range for all bacterial analysesSample dilutions should be performed so the range of values extends across these boundshigh

D Definitions (201)

Req ID Category Name Context Confidence
#D001Section'Section' means a section of this code unless some other statute is specifically mentioned.high
#D002Subdivision'Subdivision' means a subdivision of the section in which that term occurs unless some other section is expressly mentioned.high
#D003State'State' means the State of California, unless applied to the different parts of the United States. In the latter case, it includes the District of Columbia and the territories.high
#D004Person'Person' means any person, firm, association, organization, partnership, business trust, corporation, limited liability company, or company.high
#D005United States'United States' means the United States of America, and in relation to any particular matter includes the officers, agents, employees, agencies, or instrumentalities authorized to act in relation thereto.high
#D006Department'Department,' unless otherwise specified, means the Department of Water Resources.high
#D007Director'Director,' unless otherwise specified, means the Director of Water Resources.high
#D008Board'Board,' unless otherwise specified, means the State Water Resources Control Board.high
#D009recycled waterFor the purposes of this code, 'recycled water' or 'reclaimed water' has the same meaning as recycled water as defined in subdivision (n) of Section 13050.high
#D010reclaimed waterFor the purposes of this code, 'recycled water' or 'reclaimed water' has the same meaning as recycled water as defined in subdivision (n) of Section 13050.high
#D011proceedingAs used in this chapter, 'proceeding' means any inquiry, investigation, hearing, ascertainment, or other proceeding ordered or undertaken by the board pursuant to this code.high
#D012evidenceAs used in this chapter, 'evidence' means any paper, book, map, account, or document.high
#D013State board'State board' means the State Water Resources Control Board.high
#D014Regional board'Regional board' means any California regional water quality control board for a region as specified in Section 13200.high
#D015Waters of the state'Waters of the state' means any surface water or groundwater, including saline waters, within the boundaries of the state.high
#D016Water quality objectives'Water quality objectives' means the limits or levels of water quality constituents or characteristics which are established for the reasonable protection of beneficial uses of water or the prevention of nuisance within a specific area.high
#D017Water quality control'Water quality control' means the regulation of any activity or factor which may affect the quality of the waters of the state and includes the prevention and correction of water pollution and nuisance.high
#D018Contamination'Contamination' means an impairment of the quality of the 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
#D019Pollution'Pollution' means an alteration of the quality of the waters of the state by waste to a degree which unreasonably affects either of the following: (A) The waters for beneficial uses. (B) Facilities which serve these beneficial uses.high
#D020Recycled water'Recycled water' means water which, as a result of treatment of waste, is suitable for a direct beneficial use or a controlled use that would not otherwise occur and is therefor considered a valuable resource.high
#D021Master recycling permit'Master recycling permit' means a permit issued to a supplier or a distributor, or both, of recycled water, that includes waste discharge requirements prescribed pursuant to Section 13263 and water recycling requirements prescribed pursuant to Section 13523.1.high
#D022injection wellAs used in this division, 'injection well' means any bored, drilled, or driven shaft, dug pit, or hole in the ground into which waste or fluid is discharged, and any associated subsurface appurtenances, and the depth of which is greater than the circumference of the shaft, pit, or hole.high
#D023Public domain'Public domain' means a format that may be duplicated, distributed, and used without payment of a royalty or license fee.high
#D024Report'Report' means any document or item that is required for submission in order for a person to comply with a regulation, directive, or order issued by the state board, a regional board, or a local agency pursuant to a program administered by the state board...high
#D025Enclosed bays'Enclosed bays' means indentations along the coast which 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.high
#D026Estuaries'Estuaries' means waters, including coastal lagoons, located at the mouths of streams which serve as mixing zones for fresh and ocean waters.high
#D027Health risk assessment'Health risk assessment' means an analysis which evaluates and quantifies the potential human exposure to a pollutant that bioaccumulates or may bioaccumulate in edible fish, shellfish, or wildlife. 'Health risk assessment' includes an analysis of both individual and population wide health risks associated with anticipated levels of human exposure, including potential synergistic effects of toxic pollutants and impacts on sensitive populations.high
#D028Sediment quality objective'Sediment quality objective' means that level of a constituent in sediment which is established with an adequate margin of safety, for the reasonable protection of the beneficial uses of water or the prevention of nuisances.high
#D029Facilities'Facilities' means any of the following: (1) Facilities for the collection, treatment, or export of waste when necessary to prevent water pollution. (2) Facilities to recycle wastewater and to convey recycled water. (3) Facilities or devices to conserve water. (4) Any combination of the facilities described in paragraph (1), (2), or (3).high
#D030Fund'Fund' means the State Water Quality Control Fund.high
#D031Not-for-profit organization'Not-for-profit organization' means an organization operated on a notfor-profit basis, including, but not limited to, an association, cooperative, or private corporation that is a public water system, as defined in Section 116275 of the Health and Safety Code, that meets technical, managerial, and financial capacity criteria specified by the state board for public water systems, or that is subject to regulatory authority pursuant to this division.high
#D032Public agency'Public agency' means any city, county, city and county, district, or other political subdivision of the state.high
#D033Administration fund'Administration fund' means the State Water Pollution Control Revolving Fund Administration Fund.high
#D034Board'Board' means the State Water Resources Control Board.high
#D035Federal Clean Water Act'Federal Clean Water Act' or 'federal act' means the Clean Water Act (33 U.S.C. Sec. 1251 et seq.) and acts amendatory thereof or supplemental thereto.high
#D036federal act'Federal Clean Water Act' or 'federal act' means the Clean Water Act (33 U.S.C. Sec. 1251 et seq.) and acts amendatory thereof or supplemental thereto.high
#D037Grant fund'Grant fund' means the State Water Pollution Control Revolving Fund Small Community Grant Fund.high
#D038Matching funds'Matching funds' means money that equals that percentage of federal contributions required by the federal act to be matched with state funds.high
#D039Publicly owned'Publicly owned' means owned by a municipality.high
#D040Severely disadvantaged community'Severely disadvantaged community' means a community with a median household income of less than 60 percent of the statewide median household income.high
#D041Department'Department' or 'state board' means the State Water Resources Control Board.high
#D042state board'Department' or 'state board' means the State Water Resources Control Board.high
#D043Direct potable reuse'Direct potable reuse' means the planned introduction of recycled water either directly into a public water system, as defined in Section 116275 of the Health and Safety Code, or into a raw water supply immediately upstream of a water treatment plant.high
#D044Raw water augmentation'Raw water augmentation,' which means the planned placement of recycled water into a system of pipelines or aqueducts that deliver raw water to a drinking water treatment plant that provides water to a public water system, as defined in Section 116275 of the Health and Safety Code.high
#D045Treated drinking water augmentation'Treated drinking water augmentation,' means the planned placement of recycled water into the water distribution system of a public water system, as defined in Section 116275 of the Health and Safety Code.high
#D046Indirect potable reuse for groundwater recharge'Indirect potable reuse for groundwater recharge' means the planned use of recycled water for replenishment of a groundwater basin or an aquifer that has been designated as a source of water supply for a public water system, as defined in Section 116275 of the Health and Safety Code.high
#D047Reservoir water augmentation'Reservoir water augmentation' means the planned placement of recycled water into a raw surface water reservoir used as a source of domestic drinking water supply for a public water system, as defined in Section 116275 of the Health and Safety Code, or into a constructed system conveying water to such a reservoir.high
#D048Well'Well' or 'water well' as used in this chapter, means any artificial excavation constructed by any method for the purpose of extracting water from, or injecting water into, the underground. This definition shall not include: (a) oil and gas wells, or geothermal wells constructed under the jurisdiction of the Department of Conservation, except those wells converted to use as water wells; or (b) wells used for the purpose of (1) dewatering excavation during construction, or (2) stabilizing hillsides or earth embankments.high
#D049water well'Well' or 'water well' as used in this chapter, means any artificial excavation constructed by any method for the purpose of extracting water from, or injecting water into, the underground. This definition shall not include: (a) oil and gas wells, or geothermal wells constructed under the jurisdiction of the Department of Conservation, except those wells converted to use as water wells; or (b) wells used for the purpose of (1) dewatering excavation during construction, or (2) stabilizing hillsides or earth embankments.high
#D050Cathodic protection well'Cathodic protection well,' as used in this chapter, means any artificial excavation in excess of 50 feet constructed by any method for the purpose of installing equipment or facilities for the protection electrically of metallic equipment in contact with the ground, commonly referred to as cathodic protection.high
#D051Monitoring well'Monitoring well' as used in this chapter, means any artificial excavation by any method for the purpose of monitoring fluctuations in groundwater levels, quality of underground waters, or the concentration of contaminants in underground waters.high
#D052Geothermal heat exchange well'Geothermal heat exchange well,' as used in this chapter, means any uncased artificial excavation, by any method, that uses the heat exchange capacity of the earth for heating and cooling, in which excavation the ambient ground temperature is 30 degrees Celsius (86 degrees Fahrenheit) or less, and which excavation uses a closed loop fluid system to prevent the discharge or escape of its fluid into surrounding aquifers or other geologic formations. Geothermal heat exchange wells include ground source heat pump wells.high
#D053Waste wellAs used in this article, 'waste well' includes any hole dug or drilled into the ground, used or intended to be used for the disposal of waste.high
#D054houseboatAs used in this article, 'houseboat' means a watercraft or industrial or commercial structure on or in the waters of the state, floating or nonfloating, which is designed or fitted out as a place of habitation and is not principally used for transportation. 'Houseboat' includes platforms, and waterborne hotels and restaurants.high
#D055City or county'City or county' means any city, county, city and county, or port authority.high
#D056Dry weather runoff'Dry weather runoff' has the same meaning as defined in Section 10561.5.high
#D057Local agency'Local agency' includes, but is not limited to, a city, county, special district, joint powers authority, sanitary district, sanitation district, county sanitation district, community services district, and municipal utility district.high
#D058Municipal wastewater agency'Municipal wastewater agency' means a local agency that chooses to exercise any authority granted under this chapter.high
#D059Stormwater'Stormwater' has the same meaning as defined in Section 10561.5.high
#D060DischargerAny owner or operator of a boatyard or boat maintenance and repair facility that is located adjacent to a surface water in the San Diego Region.high
#D061Waters of the United StatesGenerally refers to surface waters, as defined for the purposes of the federal Clean Water Act (CWA). For the purpose of this Order, the terms 'surface water' and 'receiving water' are interchangeably used to mean 'waters of the United States' unless noted otherwise.high
#D062No Exposureall Industrial Materials and Activities are protected by a storm-resistant shelter to prevent exposure to rain, snow, snowmelt, and/or runoff.high
#D063Industrial Materials and Activitiesincludes, but is not limited to, material handling activities or equipment, industrial machinery, raw materials, intermediate products, by-products, final products, or waste products.high
#D064Material Handling Activitiesincludes the storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product, or waste product.high
#D065Sealedbanded or otherwise secured, but without operational taps or valves.high
#D066Storm-Resistant Sheltersincludes completely roofed and walled buildings or structures. They also include structures with only a top cover supported by permanent supports but with no side coverings, provided material within the structure is not subject to wind dispersion (sawdust, powders, etc.), track-out, and there is no storm water discharged from within the structure that has come into contact with any materials.high
#D067Single Operational Upset (SOU)A SOU is broadly defined as a single unusual event that temporarily disrupts the usually satisfactory operation of a system in such a way that it results in violation of multiple pollutant parameters.high
#D068AMELAverage Monthly Effluent Limitationhigh
#D069AWELAverage Weekly Effluent Limitationhigh
#D070Basin PlanWater Quality Control Plan for the San Diego Basinhigh
#D071BATBest Available Technologyhigh
#D072BMPsBest Management Practiceshigh
#D073CTRCalifornia Toxics Rulehigh
#D074CWAClean Water Acthigh
#D075MDELMaximum Daily Effluent Limitationhigh
#D076Acute ToxicityThe ability of a substance to cause severe biological harm or death soon after a single exposure or dose. The term acute toxicity also encompasses any poisonous effect resulting from a single short-term exposure to a toxic substance.high
#D077Anti-BackslidingProvisions in the Clean Water Act (CWA) and United States Environmental Protection Agency regulations [CWA part 303 (d) (4); CWA part 402 (c); CFR section 122.44 (1)] that require a reissued permit to be as stringent as the previous permit with some exceptions.high
#D078Arithmetic Mean (  )Also called the average, is the sum of measured values divided by the number of samples.high
#D079Beneficial UsesThe Beneficial Uses of waters of the State may be protected against quality degradation 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.high
#D080Daily DischargeDaily 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
#D081Grab SampleAn individual sample of at least 100 milliliters collected at a randomly selected time over a period not exceeding 15 minutes. The sample is taken from a waste stream on a one-time basis without consideration of the flow rate of the waste stream and without consideration of time of day.high
#D082Industrial Storm WaterStorm water which has the potential to come in contact with areas used for manufacturing, processing, or raw materials storage at an industrial facility.high
#D083Qualifying Storm Events (QSEs)A qualifying storm event occurs when sufficient precipitation generates runoff from the Facility that is discharged into the receiving water and is preceded by at least 48 hours with no discharge from any drainage area.high
#D084Storm EventA storm event is a period of rainfall of at least 0.25 inches of rain that is preceded by at least seven days without rainfall.high
#D085Storm WaterStorm water runoff, snowmelt runoff, and storm water surface runoff and drainage.high
#D086AntidegradationPolicies which ensure protection of water quality for a particular body where the water quality exceeds levels necessary to protect fish and wildlife propagation and recreation on and in the water. This also includes special protection of waters designated as outstanding natural resource waters. Antidegradation plans are adopted by the State to minimize adverse effects on water.high
#D087Best Available Technology Economically Achievable (BAT)The best existing performance of treatment technologies that are economically achievable within an industrial point source category. BAT standards apply to toxic and non-conventional pollutants.high
#D088Best Conventional Pollutant Control Technology (BCT)The control from existing industrial point sources of conventional pollutants including BOD, TSS, fecal coliform, pH, and oil and grease. The BCT standard is established after considering the 'cost reasonableness' of the relationship between the cost of attaining a reduction in effluent discharge and the benefits that would result, and also the cost effectiveness of additional industrial treatment beyond best practicable treatment control technology (BPT).high
#D089Best practicable treatment control technology (BPT)The average of the best performance by plants within an industrial category or subcategory. BPT standards apply to toxic, conventional, and non-conventional pollutants.high
#D090Best Professional Judgment (BPJ)The method used by permit writers to develop technology-based NPDES permit conditions on a case-by-case basis using all reasonably available and relevant data.high
#D091Bioaccumulative PollutantsThose 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
#D092Biochemical Oxygen Demand (BOD)A measurement of the amount of oxygen utilized by the decomposition of organic material, over a specified time period (usually 5 days) in a wastewater sample; it is used as a measurement of the readily decomposable organic content of a wastewater.high
#D093CarcinogenicPollutants are substances that are known to cause cancer in living organisms.high
#D094ChlordaneChlordane shall mean the sum of chlordane-alpha, chlordane-gamma, chlordane-alpha, chlordane-gamma, nonachlor-alpha, nonachlor-gamma, and oxychlordane.high
#D095Chronic ToxicityChronic toxicity is the measure of the sub-lethal effects of a discharge or ambient water sample (e.g. reduced growth or reproduction.) Certain chronic toxicity tests include an additional measurement of lethality.high
#D096Certifying OfficialAll applications must be signed as follows: For a corporation: By a responsible corporate officer... For a partnership or sole proprietorship: By a general partner or the proprietor, respectively; or For a municipality, state, federal, or other public agency: By either a principal executive officer or ranking elected official.high
#D097Composite SampleSample composed of two or more discrete samples of at least 100 milliliters collected at periodic intervals during the operating hours of a facility over a 24-hour period. The aggregate sample will reflect the average water quality covering the compositing or sample period.high
#D098Conventional PollutantsPollutants typical of municipal sewage, and for which municipal secondary treatment plants are typically designed; defined at 40 CFR section 401.16 as BOD, TSS, fecal coliform bacteria, oil and grease, and pH.high
#D099Degrade (Degradation)Degradation shall be determined by comparison of the waste field and reference site(s) for characteristic species diversity, population density, contamination, growth anomalies, debility, or supplanting of normal species by undesirable plant and animal species.high
#D100DichlorobenzenesThe sum of 1,2- and 1,3-dichlorobenzene.high
#D101Dilution CreditDilution Credit is the amount of dilution granted to a discharge in the calculation of a water quality-based effluent limitation, based on the allowance of a specified mixing zone.high
#D102Effluent 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
#D103Effluent LimitationAny restriction imposed by an Order on quantities, discharge rates, and concentrations of pollutants that are discharged from point sources into waters of the United States, the waters of the contiguous zone, or the ocean.high
#D104Estuaries and Coastal LagoonsWaters at the mouths of streams that serve as mixing zones for fresh and ocean waters during a major portion of the year. Mouths of streams that are temporarily separated from the ocean by sandbars shall be considered as estuaries.high
#D105Enclosed BaysEnclosed 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.high
#D106EndosulfanThe sum of endosulfan-alpha and -beta and endosulfan sulfate.high
#D107Estimated Chemical ConcentrationThe estimated chemical concentration that results from the confirmed detection of the substance by the analytical method below the ML value.high
#D108EstuariesEstuaries 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.high
#D109First FlushStorm water runoff that occurs between the time a storm event begins and when a minimum of 0.25 inches of precipitation has been collected in a rain gauge or equivalent measurement device at a location on the site which is representative of precipitation at the site.high
#D110HalomethanesThe sum of bromoform, bromomethane (methyl bromide) and chloromethane (methyl chloride).high
#D111Hexachlorocyclohexane (HCH)The sum of the alpha, beta, gamma (lindane) and delta isomers of HCH.high
#D112Impervious FactorImpervious factor is calculated by the following equation: Impervious factor = (square feet of impervious surface within the facility) / (total square feet of the facility)high
#D113Impervious SurfaceAreas that are covered by impenetrable materials such as asphalt, concrete, brick, stone and rooftops.high
#D114Inland Surface WatersAll surface waters of the state that do not include the ocean, enclosed bays, or estuaries.high
#D115Instantaneous Maximum Effluent LimitationThe 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
#D116Instantaneous Minimum Effluent LimitationThe 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
#D117MedianThe 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).high
#D118Method Detection Limit (MDL)MDL is the minimum concentration of a substance that can be measured and reported with 99 percent confidence that the analyte concentration is greater than zero, as defined in in 40 CFR part 136, Appendix B.high
#D119Minimum Level (ML)ML is the concentration at which the entire analytical system must give a recognizable signal and acceptable calibration point.high
#D120Mixing ZoneMixing Zone is a limited volume of receiving water that is allocated for mixing with a wastewater discharge where water quality criteria can be exceeded without causing adverse effects to the overall water body.high
#D121Natural LightReduction of natural light may be determined by the San Diego Water Board by measurement of light transmissivity or total irradiance, or both, according to the monitoring needs of the San Diego Water Board.high
#D122NuisanceWater Code section 13050, subdivision (m), defines nuisance as anything which meets all of the following requirements: 1. Is injurious to health... 2. Affects at the same time an entire community... 3. Occurs during, or as a result of, the treatment or disposal of wastes.high
#D123Persistent PollutantsPersistent pollutants are substances for which degradation or decomposition in the environment is nonexistent or very slow.high
#D124Phenolic Compounds (chlorinated)The sum of 4-chloro-3-methylphenol, 2-chlorophenol, pentachlorophenol, 2,4,5-trichlorophenol, and 2,4,6-trichlorophenol.high
#D125Phenolic Compounds (non-chlorinated)The sum of 2,4-dimethylphenol, 4,6-Dinitro-2-methylphenol, 2,4-dinitrophenol, 2-methylphenol, 4- methylphenol, 2-nitropheneol, 4-nitrophenol, and phenol.high
#D126Pollution PreventionPollution 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.high
#D127Polychlorinated biphenyls (PCBs)The sum of chlorinated biphenyls whose analytical characteristics resemble those of Aroclor 1016, Aroclor-1221, Aroclor-1232, Aroclor-1242, Aroclor-1248, Arolclor-1254, and Arcolor 1260.high
#D128Polynuclear Aromatic Hydrocarbons (PAHs)The sum of acenaphthylene, anthracene, 1,2-benzanthracene, 3,4-benzofluoranthene, benzo[k]fluoranthene, 1,12-benzoperylene, benzo[a]pyrene, chrysene, dibenzo[ah]anthracene, fluorene, indeno[1,2,3-cd]pyrene, phenanthrene and pyrene.high
#D129Reporting 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 General Order, including an additional factor if applicable as discussed herein.high
#D130Source of Drinking WaterAny water designated as municipal or domestic supply (MUN) in a San Diego Water Board Basin Plan.high
#D131Standard Deviation ( σ )Standard Deviation is a measure of variability that is calculated as follows: σ = ( Σ [(x -μ ) 2 ]/(n - 1)) 0.5high
#D132Technology-Based Effluent LimitA permit limit for a pollutant that is based on the capability of a treatment method to reduce the pollutant to a certain concentration.high
#D133Test of Significant Toxicity (TST)Test of Significant Toxicity (TST) is 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
#D134ToxicityThe aggregate toxic effect of a waste discharge measured directly by a chronic or acute toxicity test. This aggregate effect is frequently referred to as 'whole effluent toxicity'.high
#D135Toxic PollutantPollutants or combinations of pollutants... which after discharge and upon exposure... will... cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunctions... or physical deformations.high
#D136TCDD equivalentsTCDD equivalents represent the sum of concentrations of chlorinated dibenzodioxins (2,3,7,8 CDDs) and chlorinated dibenzofurans (2,3,7,8-CDFs) multiplied by their respective toxicity factors, as shown by the table below.high
#D137TrashTrash means all improperly discarded solid material from any production, manufacturing, or processing operation including, but not limited to, products, product packaging, or containers constructed of plastic, steel, aluminum, glass, paper, or other synthetic or natural materials.high
#D138WasteAs used in the Ocean Plan, waste includes a Dischargers total discharge, of whatever origin (i.e., gross, not net, discharge).high
#D139Water Quality Control PlanThere are two types of water quality control plans - Basin Plans and Statewide Plans... A water quality control plan consists of a designation or establishment for the waters within a specified area of (1) beneficial uses to be protected, (2) water quality objectives, and (3) a program of implementation needed for achieving water quality objectives.high
#D140Water Quality ObjectivesNumerical or narrative limits on constituents or characteristics of water designed to protect designated beneficial uses of the water. [Water Code section 13050(h)].high
#D141Water Quality StandardsProvisions of State or federal law which consist of a designated use or uses for waters of the United States and water quality criteria for such waters based upon such uses.high
#D142Whole Effluent Toxicity (WET)The aggregate toxic effect of an effluent measured directly by a chronic or acute toxicity test.high
#D143Average 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
#D144Average 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
#D145Coefficient 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
#D146Detected, but Not Quantified (DNQ)DNQ are those sample results less than the RL, but greater than or equal to the laboratory's MDL. Sample results reported as DNQ are estimated concentrations.high
#D147Discharge Monitoring Report (DMR)Means the USEPA uniform form, including any subsequent additions, revisions, or modifications for the reporting of self-monitoring results by permittees. DMRs must be used by approved states as well as by USEPA.high
#D148Dredged MaterialAny material excavated or dredged from the navigable waters of the United States, including material otherwise referred to as 'spoil'.high
#D149Maximum 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
#D150Not Detected (ND)Sample results which are less than the laboratory's MDL.high
#D151Toxicity Identification Evaluation (TIE)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
#D152Toxicity 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.high
#D153NOINotice of Intenthigh
#D154NOTNotice of Terminationhigh
#D155NPDESNational Pollutant Discharge Elimination Systemhigh
#D156WDRsWaste Discharge Requirementshigh
#D157SMRSelf-monitoring Reporthigh
#D158Bypass'Bypass' means the intentional diversion of waste streams from any portion of a treatment facility.high
#D159Severe 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.high
#D160UpsetUpset means an exceptional incident in which there is unintentional and temporary noncompliance with technology based effluent limitations (TBELs) because of factors beyond the reasonable control of the Discharger.high
#D16140 CFRCode of Federal Regulations, title 40high
#D162CBOD 5Carbonaceous Biochemical Oxygen Demand (5-Day at 20 o C)high
#D163CCRCalifornia Code of Regulationshigh
#D164CEQACalifornia Environmental Quality Acthigh
#D165CFRCode of Federal Regulationshigh
#D166CFUColony Forming Unitshigh
#D167CIWQSCalifornia Integrated Water Quality Systemhigh
#D168DDTDichlorodiphenyltrichloroethanehigh
#D169DMRsDischarge Monitoring Reportshigh
#D170DODissolved Oxygenhigh
#D171HoNull Hypothesishigh
#D172IWCIn-Stream Waste Concentrationhigh
#D173MDLMethod Detection Limithigh
#D174MLMinimal Levelhigh
#D175MRPMonitoring and Reporting Programhigh
#D176MS4Municipal Separate Storm Sewer Systemhigh
#D177NDNot Detectedhigh
#D178NECNo Exposure Certificationhigh
#D179NH 3un-ionized ammoniahigh
#D180NTRNational Toxics Rulehigh
#D181NTUNephelometric Turbidity Unithigh
#D182PCBPolychlorinated Biphenylshigh
#D183PAHPolynuclear Aromatic Hydrocarbonshigh
#D184POTWsPublicly-Owned Treatment Workshigh
#D185RLReporting Levelhigh
#D186ROWDReport of Waste Dischargehigh
#D187RPAReasonable Potential Analysishigh
#D188San Diego Water BoardCalifornia Regional Water Quality Control Board, San Diego Regionhigh
#D189SIPState Implementation Policyhigh
#D190State Water BoardState Water Resources Control Boardhigh
#D191TBELsTechnology-Based Effluent Limitationshigh
#D192TDSTotal Dissolved Solidshigh
#D193TMDLTotal Maximum Daily Loadhigh
#D194TSSTotal Suspended Solidshigh
#D195USCGU.S. Coast Guardhigh
#D196USEPAU.S. Environmental Protection Agencyhigh
#D197Water CodeCalifornia Water Codehigh
#D198WETWhole Effluent Toxicityhigh
#D199WQBELsWater Quality-Based Effluent Limitationshigh
#D200WQOsWater Quality Objectiveshigh
#D201Compliance Storm EventA Compliance Storm Event is a storm event less than a 5-year frequency, 24-hour storm (expressed in tenths of an inch of rainfall).high