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Document ID us-orgwdrdfbbmrfaswwsdr-2019-10-09 Title Order R9-2019-0008, 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-422 Jurisdiction /us Subdomain(s) none Language Status completed Analyzed at 2026-05-13 12:19:01.669050+00:00 Relevance inventory_targeted_fetch

Q Qualitative Requirements (48)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#R001administrativereportingmandatoryNPDES Regulatory Coverage Requirementwastewater, otherThis General Order requires boatyard and boat maintenance and repair facility owners and operators discharging, or proposing to discharge, industrial wastewater or industrial storm water runoff to waters of the United States in the San Diego Region as described in section I.A of this General Order, excluding those facilities that meet the exception criteria in section I.B of this General Order, to obtain NPDES regulatory coverage through enrollment under this General Order.Applies to owners/operators adjacent to surface waters in the San Diego Region.high
#R002prohibitionhealthmandatoryProhibited Waste DischargesotherThe 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: 1. Paint chips; 2. Blasting materials; 3. Paint overspray; 4. Paint spills; 5. Water contaminated with abrasive blast materials, paint, oils, fuels, lubricants, solvents, or petroleum; 6. Hydro-blast water; 7. Tank cleaning water used to remove sludge and/or dirt; 8. 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; 9. Steam cleaning water; 10. Pipe and tank hydrostatic test water; 11. Saltbox water; 12. Hydraulic oil leaks and spills; 13. Fuel leaks and spills; 14. Trash; 15. 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; 16. Fiberglass dust; 17. Swept materials; 18. Ship repair and maintenance activity debris; 19. Waste zinc plates; 20. Marine fouling organisms except the discharge of marine fouling organism removed from unpainted, uncoated surfaces by underwater operations; 21. Demineralizer and reverse osmosis brine; 22. Oily bilge water; 23. Materials of petroleum origin in sufficient quantities to be visible; and 24. Polychlorinated biphenyl compounds, such as those used for transformer fluid.high
#R003prohibitionhealthmandatoryFirst Flush Storm Water Discharge ProhibitionotherThe 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.Applies to each storm event.high
#R004operationaloperationalmandatoryFloating Drydock Deck CleaningotherPrior 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.Must occur prior to submergence or flooding.high
#R005administrativeoperationalmandatoryOnsite Document MaintenanceotherA 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. Electronic copies accessible from a computer located at the facility shall be considered onsite.Applies at all times.high
#R006operationaloperationalmandatorySWPPP Development and MaintenanceotherThe 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).Requires 90-day submittal from effective date.high
#R007administrativereportingmandatoryVessel 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... The Discharger shall have a method of enforcing these requirements.high
#R008operationaloperationalmandatoryNEC Qualification - Storm-Resistant ShelterotherTo qualify for an NEC, Dischargers shall: Provide a Storm-Resistant Shelter to protect Industrial Materials and Activities from exposure to rain, snow, snowmelt, run-on, and runoff.Applicable for No Exposure Certification exclusion.high
#R009corrective_actiontreatmentmandatoryLevel 1 Status Evaluation DutyotherWithin 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 in industrial storm water discharges in compliance with best available technology economically achievable (BAT) and best conventional pollutant control technology (BCT).Triggered by NAL exceedance.high
#R010operationalhealthmandatoryDisposal of Solids Removed from Liquid WastesotherThe Discharger shall dispose of solids removed from liquid wastes in a manner that is consistent with title 27 of the CCR and approved by the San Diego Water Board.Applies to all collected screenings, sludges, and other solids.high
#R011administrativereportingmandatoryTransfer 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.Applies upon change in control or ownership.high
#R012prohibitiontreatmentmandatoryElimination of Prohibited Non-Storm WaterotherProhibited non-storm water discharges must be either eliminated or permitted by a separate NPDES permit.high
#R013designoperationalmandatoryMaintenance/Repair Area IsolationotherAppropriate 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
#R014monitoringoperationalmandatoryNEC Annual Inspection and Record KeepingotherInspect and evaluate the facility annually to determine that storm water exposed to industrial materials or equipment has not and will not be discharged to waters of the United States. Evaluation records shall be maintained for five (5) years.Applicable to facilities with No Exposure Certification.high
#R015reportingreportingmandatoryFloating Drydock Flooding NotificationotherThe Discharger shall provide written notification to the San Diego Water Board 48 hours prior to flooding of its floating drydock.If flooding must occur on short notice, notify as early as possible with explanation.high
#R016reportingreportingmandatoryLevel 2 Exceedance Report SubmittalotherThe Discharger shall prepare, certify, and submit by August 1 of the following reporting year an NAL Level 2 Exceedance Report which shall include: i. A description of treatment and/or structural source control BMPs; and ii. An implementation schedule for the design and construction of the treatment and/or structural source control BMPs.Triggered when a Discharger in Level 1 status exceeds an Instantaneous Maximum or Annual Average NAL.high
#R017operationaloperationalmandatoryDuty to Mitigate Adverse ImpactsotherThe 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.high
#R018administrativereportingmandatoryNotice of Termination RequirementotherThe Discharger shall submit a completed Notice of Termination (NOT) form (Attachment H) to the San Diego Water Board when coverage under this General Order is no longer required.Applies when ownership changes, operations cease, or alternative coverage is obtained.high
#R019monitoringoperationalmandatoryChemical Utilization Record MaintenanceotherThe 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.Must include product name, primary chemical, quantity purchased/disposed, and dates.high
#R020monitoringoperationalmandatorySpill and Illicit Discharge LoggingotherThe 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
#R021reportingreportingmandatory24-Hour Noncompliance ReportingotherThe Discharger shall report any noncompliance that may endanger health or the environment. Any information shall be provided orally within 24 hours from the time the Discharger becomes aware of the circumstances. A written submission shall also be provided within five (5) days of the time the Discharger becomes aware of the circumstances.Includes unanticipated bypass or upset exceeding effluent limitations.high
#R022monitoringoperationalmandatoryFloating Drydock Condition 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.Must show correct date and time; if flooding occurs at night, capture during daylight as close to the event as possible.high
#R023reportingreportingmandatoryNEC Annual Certification ReportotherBy 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, demonstrating that the facility has been evaluated, and that none of the Industrial Materials or Activities described above are, or will be in the foreseeable future, exposed to precipitation and have the potential to be discharged in storm water, aerially, or by other means.Applicable for maintaining No Exposure Certification coverage.high
#R024prohibitionoperationalmandatoryRecycled Industrial Storm Water Discharge ProhibitionotherIf 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 when storm water is reused or recycled in processing activities.high
#R025prohibitiontreatmentmandatoryDrydock Ballast/Flood Water Content Prohibitionaquatic lifeIf a floating drydock is used, any discharge other than receiving water in the floating drydock ballast tank discharge or in flood water is prohibited. The discharge of sediment, chlorine, biocides, or other maintenance byproducts from the floating drydock ballast tanks or in the flood water is prohibited.Applies to floating drydock operations.high
#R026operationaltreatmentmandatoryEffluent Initial Dilution RequirementotherWaste effluents shall be discharged in a manner that provides sufficient initial dilution to minimize the concentrations of substances not removed in treatment.high
#R027corrective_actiontreatmentmandatoryToxicity Reduction Evaluation (TRE) Requirementaquatic lifeIf the discharge causes or contributes to chronic toxicity in the effluent, a Toxicity Reduction Evaluation (TRE) shall be required as defined in section III.B of the MRP.Triggered if the discharge causes or contributes to chronic toxicity.high
#R028reportingreportingmandatorySWPPP Submittal DeadlineotherA 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.high
#R029operationaloperationalmandatorySWPPP Amendment DutyotherThe Discharger shall amend its SWPPP in accordance with 40 CFR 125.100 through 125.104 whenever there is a change in facility/leasehold/work area design, construction, operation, or maintenance, which materially affects the potential for discharge of toxic and hazardous pollutant to surface waters.Triggered by changes in facility design, construction, operation, or maintenance.high
#R030monitoringoperationalmandatoryLaboratory Quality Assurance Plan RequirementotherThe Discharger shall have, and implement, an acceptable written quality assurance (QA) plan for laboratory analyses. Duplicate chemical analyses must be conducted on a minimum of 10 percent of the samples unless otherwise specified by the San Diego Water Board.Applies to all laboratory analyses used for compliance.high
#R031monitoringoperationalmandatoryWeekly BMP Inspection RequirementotherThe 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.All year round weekly frequency.high
#R032monitoringoperationalmandatoryMonthly Storm Water Visual Observation RequirementotherThe 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.Applies to the wet season (October 1 through April 30).high
#R033reportingreportingmandatoryAnnual Storm Water Monitoring Report SubmittalotherThe Discharger shall submit an Annual Storm Water Monitoring Report by August 1st of each year to the San Diego Water Board.Due annually by August 1st.high
#R034administrativereportingmandatoryNOA Modification Request ContentotherThe request for NOA modification shall include 'Request for NOA Amendment' in the subject line; the Waste Discharge Identification 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.Applies when requesting modification of a Notice of Applicability.high
#R035operationaloperationalmandatoryCompliance Duty During Permit TerminationotherThe Discharger shall continue to comply with the requirements of this General Order until the San Diego Water Board notifies the Discharger in writing that the NOT has been approved.Applies after submittal of a Notice of Termination.high
#R036designoperationalmandatoryClimate Change Design ProtectionotherAll 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
#R037designtreatmentmandatoryWaste Management System Design Objectiveaquatic lifeWaste management systems must be designed and operated in a manner that will maintain the indigenous marine life and a healthy and diverse marine community.high
#R038reportingreportingmandatorySMR Data Tabulation RequirementotherThe Discharger shall arrange all reported data in a tabular format. The data shall be summarized to clearly illustrate whether the Facility is operating in compliance with interim and/or final effluent limitations.high
#R039reportingreportingmandatoryWater and Sediment Monitoring Plan SubmittalotherThe 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 Dischargers.high
#R040reportingreportingmandatoryCEDEN Data Upload RequirementotherThe Discharger shall upload receiving water and sediment monitoring results to CEDEN no later than 90 days after the completion of monitoring. The Discharger shall submit a statement certifying that the monitoring results have been timely uploaded into CEDEN with the Receiving Water and Sediment Monitoring Report.high
#R041reportingreportingmandatorySMR Cover Letter Content RequirementsotherThe Discharger shall attach a cover letter to the SMR. The information contained in the cover letter shall clearly identify violations of the WDRs; discuss corrective actions taken or planned; and the proposed time schedule for corrective actions. Identified violations must include a description of the requirement that was violated and a description of the violation.Applies to all SMR submittals.high
#R042monitoringoperationalmandatoryFlow 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
#R043operationaloperationalmandatoryVGP BMP Incorporation into SWPPPotherThe 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.Applicable for ship repair or pollutants generated on floating drydocks, ballast water, and vessel cooling water.high
#R044reportingreportingmandatoryLevel 1 NAL Exceedance Report SubmittalotherSubmit by August 1 of the following reporting year, an NAL Level 1 Exceedance Report which includes the following items for each constituent that exceeded an NAL Annual Average: i. A summary of the Level 1 evaluation... ii. A description and implementation schedule for additional BMPs... and iii. A certification that all industrial pollutant sources have been evaluated.Triggered by NAL exceedance.high
#R045monitoringoperationalmandatoryDMR-QA Participation RequirementotherWhen requested by USEPA or the San Diego Water Board, the Discharger will participate in the NPDES Discharge Monitoring Report QA (DMR-QA) performance study. If the DMR-QA is not requested, the Discharger shall submit the most recent Water Pollution Performance Evaluation Study.Triggered by request from USEPA or Water Board.high
#R046reportingreportingmandatoryMonitoring Station Omission DocumentationotherIf the Discharger is unable to obtain a sample from a monitoring station(s) due to safety, legal, or other reasons, collection of samples at such station(s) can be omitted... the Discharger shall submit a statement to the San Diego Water Board containing... The monitoring station(s) that was omitted; The date... and a description of the circumstances.Applies when sampling is unsafe or legally restricted.high
#R047reportingoperationalmandatoryFloating Drydock Ballast Tank Integrity 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 installed.high
#R048reportingoperationalmandatoryToxicity Laboratory SOP SubmissionotherSOPs used by the toxicity testing laboratory to identify and report valid, invalid, anomalous, or inconclusive effluent (and receiving water) toxicity test measurement results from the TST statistical approach... must be submitted to the San Diego Water Board.high

P Quantitative Requirements (22)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#R049microbiologicalhealthmandatoryPacific Ocean Enterococcus Geometric Mean Limitrecreational waterMAC35 per 100 mlOcean waters designated for REC-1 within shoreline zoneBased on the geometric mean of the five most recent sampleshigh
#R050microbiologicalhealthmandatoryPacific Ocean Total Coliform Single Sample Maximumrecreational waterMAC10000 per 100 mlOcean waters designated for REC-1Single sample maximumhigh
#R051microbiologicalhealthmandatoryPacific Ocean Fecal Coliform Single Sample Maximumrecreational waterMAC400 per 100 mlOcean waters designated for REC-1Single sample maximumhigh
#R052microbiologicalhealthmandatoryPacific Ocean Enterococcus Single Sample Maximumrecreational waterMAC104 per 100 mlOcean waters designated for REC-1Single sample maximumhigh
#R053microbiologicalhealthmandatoryPacific Ocean Total Coliform Ratio Limitrecreational waterMAC1000 per 100 mlOcean waters designated for REC-1Applies when the fecal coliform/total coliform ratio exceeds 0.1high
#R054chemicalreportingmandatoryRoutine Notification Level (General Toxic Pollutant)wastewaterrequirement100 ug/LNon-municipal manufacturing, commercial, mining, and silvicultural dischargersApplies to toxic pollutants not limited in the General Order on a routine or frequent basishigh
#R055operationalreportingmandatoryDuplicate Chemical Analysis Minimum Frequencywastewaterrequirement10 percentLaboratory quality assurance for all analysesMinimum frequency of samples to undergo duplicate analysishigh
#R056operationalreportingrecommendedLaboratory Analytical Success Rate Targetwastewaterrequirement80 percentQuality assurance (QA) plan for laboratory analysesThe Discharger should have a success rate equal to or greater than this valuehigh
#R057operationalreportingmandatoryMaximum Toxicity Sample Holding Timewastewaterrequirement72 hoursToxicity test initiation after sample collectionNo more than 72 hours shall elapse between collection and test initiationhigh
#R058operationalreportingmandatorySpecies Sensitivity Rescreening Frequencywastewaterrequirement24 monthsWhole Effluent Toxicity (WET) testingSpecies sensitivity rescreening is required at this intervalhigh
#R059physicaloperationalmandatoryTemporary Shelter Maximum Duration (NEC)otherrequirement90 daysNo Exposure Certification (NEC) qualificationsStorm-resistant shelter not required if industrial materials are protected by temporary shelter for no more than this period due to constructionhigh
#R060chemicalhealthmandatoryPacific Ocean Dissolved Oxygen Maximum Depressionaquatic lifeMAC10 percentOcean waters receiving oxygen demanding waste materialsDO concentration shall not at any time be depressed more than 10 percent from natural levelhigh
#R061operationalreportingguidanceIndividual NPDES Permit Threshold (Annual Volume)wastewaterrequirement10 million gallons per yearCriteria for requiring an individual NPDES permitIndividual permit may be required where discharge volume exceeds this amounthigh
#R062operationalreportingguidanceIndividual NPDES Permit Threshold (Duration)wastewaterrequirement3 yearsCriteria for requiring an individual NPDES permitIndividual permit may be required where duration of a discharge exceeds this valuehigh
#R063chemicalreportingmandatoryNotification Level Acrolein and Acrylonitrilewastewaterrequirement200 ug/LRoutine notification for non-municipal facilitiesDischarge of toxic pollutant not limited in the Orderhigh
#R064chemicalreportingmandatoryNotification Level Nitrophenolswastewaterrequirement500 ug/LRoutine notification for non-municipal facilitiesApplicable to 2,4-dinitrophenol and 2-methyl-4,6-dinitrophenolhigh
#R065chemicalreportingmandatoryNotification Level Antimony (Routine)wastewaterrequirement1 mg/LRoutine notification for non-municipal facilitiesDischarge of toxic pollutant (antimony) not limited in the Orderhigh
#R066chemicalreportingmandatoryNon-routine Toxic Pollutant Notification Levelwastewaterrequirement500 ug/LNon-routine or infrequent notification for non-municipal facilitiesExceedance of toxic pollutant notification levelshigh
#R067physicaloperationalmandatoryQualifying Storm Event Antecedent Dry Periodotherrequirement48 hoursDefinition of a Qualifying Storm Event (QSE)Must be preceded by at least this duration with no discharge from any drainage areahigh
#R068physicaloperationalmandatoryStorm Event Antecedent Dry Periodotherrequirement7 daysDefinition of a Storm EventPeriod of rainfall preceded by at least 7 days without rainfallhigh
#R069chemicalhealthmandatoryTST Statistical Approach Null Hypothesis Coefficientaquatic liferequirement0.75 coefficientNull hypothesis (Ho) for chronic toxicity testing using the Test of Significant Toxicity (TST)Mean discharge IWC response <= 0.75 x Mean control responsehigh
#R070microbiologicalhealthmandatoryTotal Coliform 10% Percentile Limit (Shellfish Harvesting, 3-tube test)recreational water, otherMAC330 organisms per 100 mLWaters where shellfish harvesting is designatedApplies to 30-day period when a three-tube decimal dilution test is usedhigh

D Definitions (121)

Req ID Category Name Context Confidence
#D001No Exposureall Industrial Materials and Activities are protected by a stormresistant shelter to prevent exposure to rain, snow, snowmelt, and/or runoff.high
#D002Industrial 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
#D003Material Handling Activitiesincludes the storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product, or waste product.high
#D004Sealedbanded or otherwise secured, but without operational taps or valves.high
#D005Storm-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
#D006Acute 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
#D007Anti-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
#D008AntidegradationPolicies 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
#D009Average 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
#D010Average 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
#D011Beneficial 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
#D012Best 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
#D013Best 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
#D014Best Management Practices (BMPs)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
#D015Best 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
#D016Bioaccumulative 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
#D017Biochemical 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
#D018ChlordaneThe sum of chlordane-alpha, chlordane-gamma, chlordene-alpha, chlordene-gamma, nonachlor-alpha, nonachlor-gamma, and oxychlordane.high
#D019Chronic 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
#D020Composite 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
#D021Conventional 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
#D022Daily 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
#D023Detected, 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
#D024DichlorobenzenesThe sum of 1,2- and 1,3-dichlorobenzene.high
#D025Dilution 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. It is calculated from the dilution ratio or determined through conducting a mixing zone study or modeling of the discharge and receiving water.high
#D026Effluent 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
#D027Enclosed 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
#D028EndosulfanThe sum of endosulfan-alpha and -beta and endosulfan sulfate.high
#D029EstuariesEstuaries 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
#D030First 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
#D031Grab 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
#D032HalomethanesThe sum of bromoform, bromomethane (methyl bromide) and chloromethane (methyl chloride).high
#D033Hexachlorocyclohexane (HCH)The sum of the alpha, beta, gamma (lindane) and delta isomers of HCH.high
#D034Impervious SurfaceAreas that are covered by impenetrable materials such as asphalt, concrete, brick, stone and rooftops.high
#D035Industrial 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
#D036Inland Surface WatersAll surface waters of the state that do not include the ocean, enclosed bays, or estuaries.high
#D037Instantaneous 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
#D038Instantaneous 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
#D039Maximum 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
#D040Method 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
#D041Minimum 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
#D042Mixing 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
#D043Not Detected (ND)Sample results which are less than the laboratory's MDL.high
#D044Persistent PollutantsPersistent pollutants are substances for which degradation or decomposition in the environment is nonexistent or very slow.high
#D045Phenolic Compounds (chlorinated)The sum of 4-chloro-3-methylphenol, 2-chlorophenol, pentachlorophenol, 2,4,5-trichlorophenol, and 2,4,6-trichlorophenol.high
#D046Phenolic 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
#D047Polychlorinated biphenyls (PCBs)The sum of chlorinated biphenyls whose analytical characteristics resemble those of Aroclor1016, Aroclor-1221, Aroclor-1232, Aroclor-1242, Aroclor-1248, Arolclor-1254, and Arcolor1260.high
#D048Polynuclear 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
#D049Qualifying 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
#D050Storm 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
#D051Storm WaterStorm water runoff, snowmelt runoff, and storm water surface runoff and drainage.high
#D052Toxic PollutantPollutants or combinations of pollutants, including disease-causing agents, which after discharge and upon exposure, ingestion, inhalation or assimilation into any organism, either directly from the environment or indirectly by ingestion through food chains, will, on the basis of information available to the Administrator of USEPA, cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunctions, (including malfunctions in reproduction) or physical deformations, in such organisms or their offspring. Toxic pollutants also include those pollutants listed by the Administrator under CWA section 307(a)(1) or any pollutant listed under section 405 (d) which relates to sludge management.high
#D053TrashTrash 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
#D054Water 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
#D055Water 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. Water quality standards are to protect the public health or welfare, enhance the quality of water and serve the purposes of the Clean Water Act [40 CFR section 131.3(i)].high
#D056Whole Effluent Toxicity (WET)The aggregate toxic effect of an effluent measured directly by a chronic or acute toxicity teshigh
#D057Waters 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 use to mean 'waters of the United States' unless note otherwise.high
#D058Bypassthe intentional diversion of waste streams from any portion of a treatment facility.high
#D059Severe property damagesubstantial 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
#D060Upsetan 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. 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
#D061Arithmetic Mean (Δ)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 = Δ = ∑ x / n where: ∑ x is the sum of the measured ambient water concentrations, and n is the number of samples.high
#D062Best 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
#D063CarcinogenicPollutants are substances that are known to cause cancer in living organisms.high
#D064Coefficient 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
#D065Certifying 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
#D066Degrade (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. Degradation occurs if there are significant differences in any of three major biotic groups, namely, demersal fish, benthic invertebrates, or attached algae.high
#D067Discharge Monitoring Report (DMR)Means the USEPA uniform form, including any subsequent additions, revisions, or modifications for the reporting of self-monitoring results by permittees.high
#D068Dredged MaterialAny material excavated or dredged from the navigable waters of the United States, including material otherwise referred to as 'spoil'.high
#D069Effluent 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
#D070MedianThe 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
#D071NuisanceWater Code section 13050, subdivision (m), defines nuisance as 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
#D072Pollution 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 (as defined in Water Code section 13263.3).high
#D073DischargerAny 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
#D074Arithmetic Mean (  )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 =  =  x / n where:  x is the sum of the measured ambient water concentrations, and n is the number of samples.high
#D075Estuaries 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. Estuarine waters will generally be considered to extend from a bay or the open ocean to the upstream limit of tidal action but may be considered to extend seaward if significant mixing of fresh and salt water occurs in the open coastal waters. The waters described by this definition include but are not limited to the Sacramento-San Joaquin Delta as defined by section 12220 of the Water Code, Suisun Bay, Carquinez Strait downstream to Carquinez Bridge, and appropriate areas of the Smith, Klamath, Mad, Eel, Noyo, and Russian Rivers.high
#D076Estimated Chemical ConcentrationThe estimated chemical concentration that results from the confirmed detection of the substance by the analytical method below the ML value.high
#D077Impervious 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
#D078Natural 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
#D079Reporting 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. The MLs included in this General Order correspond to approved analytical methods for reporting a sample result that are selected by the San Diego Water Board from Appendix 2 of the Ocean Plan, 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 matrix-effects 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
#D080Source of Drinking WaterAny water designated as municipal or domestic supply (MUN) in a San Diego Water Board Basin Plan.high
#D081Standard Deviation (  )Standard Deviation is a measure of variability that is calculated as follows:  = (  [(x - ) 2 ]/(n - 1)) 0.5 where: x is the observed value;  is the arithmetic mean of the observed values; and n is the number of samples.high
#D082Toxicity 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
#D083Toxicity 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 TIE may be required as part of the TRE, if appropriate.high
#D084Technology-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
#D085Test of Significant Toxicity (TST)Test of Significant Toxicity (TST) is a statistical approach used to analyze toxicity test data. The TST incorporates a restate null hypothesis, Welch's t-test, and biological effect thresholds for chronic and acute toxicity.high
#D086ToxicityThe aggregate toxic effect of a waste discharge measured directly by a chronic or acute toxicity test. This aggregate effect is frequently referre to as 'whole effluent toxicity'.high
#D087TCDD 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.high
#D088WasteAs used in the Ocean Plan, waste includes a Dischargers total discharge, of whatever origin (i.e., gross, not net, discharge).high
#D089Water Quality Control PlanThere are two types of water quality control plans - Basin Plans and Statewide Plans. Regional Boards adopt Basin Plans for each region based upon surface water hydrologic basin boundaries. The Regional Basin Plans designates or describes (1) existing and potential beneficial uses of ground and surface water; (2) water quality objectives to protect the beneficial uses; (3) implementation programs to achieve these objectives; and (4) surveillance and monitoring activities to evaluate the effectiveness of the water quality control plan. The Statewide Plans address water quality concerns for surface waters that overlap Regional Board boundaries, are statewide in scope, or are otherwise considered significant and contain the same four elements. Statewide Water Quality Control Plans include the Ocean Plan, the Enclosed Bays and Estuaries Plan, the Inland Surface Waters Plan, and the Thermal Plan. 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 [Water Code section 13050(j)].high
#D090surface waterswaters of the United States in the San Diego Regionhigh
#D091Annual Average NAL exceedanceoccurs when the average of all the analytical results for a parameter from all samples taken within the reporting year exceeds the Annual Average NAL value for that parameter listed in Table 7.high
#D092Instantaneous Maximum NAL exceedanceoccurs when two or more analytical results from samples for any single parameter taken within the reporting year exceed the Instantaneous Maximum NAL value for total suspended solids and total oil and grease or are outside of the Instantaneous Maximum NAL range for pH listed in Table 7 below.high
#D093Compliance Storm Eventis a storm event less than a 5-year frequency, 24-hour storm (expressed in tenths of an inch of rainfall), as determined at the National Oceanic and Atmospheric Administration's National Weather Service Hydrometeorological Design Studies Center website at https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_map_cont.html?bkmrk=ca.high
#D094SOU (Single Operational Upset)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
#D095Existing BoatyardsBoatyards currently enrolled under General Order No. R9-2013-0026 and listed in Table 4high
#D09640 CFRCode of Federal Regulations, title 40high
#D097CBOD 5Carbonaceous Biochemical Oxygen Demand (5-Day at 20 o C)high
#D098CFUColony Forming Unitshigh
#D099DDTDichlorodiphenyltrichloroethanehigh
#D100DischargerCity of Escondido (Discharger)high
#D101DODissolved Oxygenhigh
#D102HoNull Hypothesishigh
#D103HSAHydrologic Subareashigh
#D104LTALong-Term Averagehigh
#D105MBASMethylene Blue Active Substanceshigh
#D106MCLMaximum Contaminant Levelhigh
#D107MLLWMean Lower Low Waterhigh
#D108MPNMost Probable Numberhigh
#D109MTBEMethyl-tert-butyl-etherhigh
#D110OALOffice of Administrative Lawhigh
#D111pCi/LPicocuries per Literhigh
#D112PMPPollutant Minimization Programhigh
#D113RMDsRegulatory Management Decisionshigh
#D114San Diego Water BoardCalifornia Regional Water Quality Control Board, San Diego Regionhigh
#D115SMStandard Methods, Policy for Implementation of Toxics Standards for Inland Surface Waters, and Enclosed Bays, and Estuaries of Californiahigh
#D116SMRSelf-monitoring Reporthigh
#D117SWAMPSurface Water Ambient Monitoring Programhigh
#D118TUcChronic Toxicity Unithigh
#D119USCGU.S. Coast Guardhigh
#D120WMMPWatercourse Monitoring and Management Planhigh
#D121WQOsWater Quality Objectiveshigh