| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #R001 | administrative | reporting | mandatory | Notice of Intent Submission | wastewater, other | Any 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. | Applies to any person proposing to discharge industrial storm water runoff from a boatyard or maintenance facility adjacent to surface water. | high |
| #R002 | prohibition | health | mandatory | Specific Waste Discharge Prohibition | aquatic life, recreational water | The 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. | Applies to discharges from land, docks, or boats directly into receiving waters. | high |
| #R003 | prohibition | treatment | mandatory | First Flush Discharge Prohibition | aquatic life | The 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 the first 0.25 inches of rainfall from each storm. | high |
| #R004 | operational | treatment | mandatory | Floating Drydock Deck Cleaning | aquatic life | Prior 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 be performed prior to submergence or flooding. | high |
| #R005 | administrative | treatment | mandatory | SWPPP Development and Maintenance | other | The 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). | high | |
| #R006 | administrative | reporting | mandatory | Vessel Owner/Operator Notification | other | The 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. | Applies to all vessel owners/operators at the Discharger's leasehold. | high |
| #R007 | administrative | reporting | mandatory | NEC Annual Certification | other | By 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. | Applies to Dischargers previously registered for NEC coverage. | high |
| #R008 | design | treatment | mandatory | Isolation of Maintenance and Repair Areas | drinking water, wastewater, aquatic life | Appropriate 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. | Applies to facility maintenance and repair areas to prevent storm water commingling. | high |
| #R009 | monitoring | operational | mandatory | Weekly BMP Inspections | wastewater, aquatic life | The 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; includes piers, docks, floats, and areas over or on receiving water. | high |
| #R010 | administrative | reporting | mandatory | Chemical Utilization Recordkeeping | other | The 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. | Retention period of 5 years. | high |
| #R011 | administrative | operational | mandatory | Onsite Maintenance of General Order and NOA | other | A 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 are considered onsite. | high |
| #R012 | reporting | reporting | mandatory | Spill and Illicit Discharge Logging | aquatic life, recreational water | The 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. | Log must identify time, date, cause, materials, volume, and corrective actions. | high |
| #R013 | administrative | reporting | mandatory | Notice of Termination | other | The 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 |
| #R014 | corrective_action | operational | mandatory | NAL Level 1 Exceedance Response | wastewater, aquatic life | In 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... evaluate industrial pollutant sources... implement additional BMPs... revise the SWPPP... [and] submit by August 1 of the following reporting year, an NAL Level 1 Exceedance Report. | Triggered by an exceedance of any Instantaneous Maximum or Annual Average NAL value. | high |
| #R015 | corrective_action | treatment | mandatory | Toxicity Reduction Evaluation | aquatic life | If 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. The San Diego Water Board shall require the Discharger to conduct a TRE if repeated tests reveal toxicity as a result of waste discharge under this General Order. | Triggered by repeated toxicity test failures or contribution to chronic toxicity. | high |
| #R016 | reporting | reporting | mandatory | Drydock Flooding Notification | wastewater, aquatic life | The Discharger shall provide written notification to the San Diego Water Board 48 hours prior to flooding of its floating drydock. | Applies to facilities authorized to discharge from a floating drydock. | high |
| #R017 | monitoring | operational | mandatory | Drydock Condition Documentation | wastewater, aquatic life | The 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 occur at the initial flooding; if at night, must be taken during daylight hours as close to flooding as possible. | high |
| #R018 | administrative | operational | mandatory | Solids and Sludge Disposal Approval | other | Collected screenings, sludges, and other solids removed from liquid wastes, shall be disposed in a manner approved by the San Diego Water Board. | Applies to all solids removed from treatment or waste streams. | high |
| #R019 | administrative | reporting | mandatory | Ballast Water NOI Submission | wastewater, other | Any person proposing to discharge ballast or flood water from floating drydocks to San Diego Bay shall submit a completed 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 ballast or flood water from floating drydocks. | Applies specifically to drydock ballast or flood water discharges to San Diego Bay. | high |
| #R020 | operational | treatment | mandatory | NEC SWPPP Requirement | other | a SWPPP is required if secondary containment is used to satisfy NEC requirements. | Only applies to NEC-enrolled facilities using secondary containment as the basis for the exclusion. | high |
| #R021 | administrative | treatment | mandatory | SWPPP Submission and Amendment | other | A 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. The 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. | high | |
| #R022 | reporting | reporting | mandatory | SMR Cover Letter Requirements | other | The 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. | Required for all Self-Monitoring Report submissions. | high |
| #R023 | monitoring | operational | mandatory | NEC Annual Evaluation and Recordkeeping | other | Inspect 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. | Specific to facilities with No Exposure Certification. | high |
| #R024 | prohibition | treatment | mandatory | Non-Storm Water Discharge Elimination | wastewater | Prohibited non-storm water discharges must be either eliminated or permitted by a separate NPDES permit. | Applies to discharges other than industrial storm water or drydock ballast/flood water. | high |
| #R025 | corrective_action | operational | mandatory | Level 2 NAL Exceedance Response | wastewater, aquatic life | 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. | Triggered by obtaining Level 2 status following a subsequent NAL exceedance. | high |
| #R026 | administrative | reporting | mandatory | Laboratory Quality Assurance Plan | other | The 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 samples. | high |
| #R027 | monitoring | unknown | mandatory | Regional Monitoring Participation | aquatic life, recreational water | The Discharger shall, as directed by the San Diego Water Board, participate with other regulated entities, other interested parties, and the San Diego Water Board in development and implementation of new and improved monitoring and assessment programs for receiving waters in the San Diego Region and discharges to those waters. | As directed by the San Diego Water Board. | high |
| #R028 | monitoring | reporting | mandatory | Toxicity SOP Submission | aquatic life | SOPs 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, including those that incorporate a consideration of concentration-response patterns, must be submitted to the San Diego Water Board. | Applies to chronic toxicity monitoring results. | high |
| #R029 | operational | operational | mandatory | Duty to Mitigate Noncompliance Impacts | other | The 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 NOA. | high |
| #R030 | administrative | reporting | mandatory | Succeeding Owner NOI Submission | other | The new succeeding owner or operator must submit an NOI application of enrollment under this General Order and obtain authorization from the San Diego Water Board. | Applies in the event of a change in control or ownership of land or waste discharge facilities. | high |
| #R031 | prohibition | treatment | mandatory | Floating Drydock Internal Discharge Prohibition | aquatic life | If 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. | Specific to drydock operations. | high |
| #R032 | prohibition | treatment | mandatory | Recycled Industrial Storm Water Prohibition | wastewater | If 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 in industrial processes. | high |
| #R033 | operational | treatment | mandatory | VGP BMP Incorporation into SWPPP | wastewater, other | The 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. | Applies to the development and maintenance of the Storm Water Pollution Prevention Plan. | high |
| #R034 | monitoring | operational | mandatory | Flow Measurement Device Calibration | other | All 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). | Applies to all instruments and devices used to fulfill the prescribed monitoring program. | high |
| #R035 | monitoring | operational | mandatory | Wet Season Visual Observations | wastewater | The 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. | Triggered by the first qualifying storm event (QSE) in each month between October and April. | high |
| #R036 | reporting | reporting | mandatory | Water and Sediment Monitoring Plan Submission | aquatic life | The 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. | Applies to Category 1 dischargers (those discharging from storms smaller than a 5-year, 24-hour event). | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #R037 | microbiological | health | mandatory | San Diego Bay E. coli Whole Fish Handling Limit | other | MAC | <= 7 organisms per mL | Waters used for whole fish handling in San Diego Bay | Density shall not be exceeded in more than 20 percent of any 20 daily consecutive samples | high |
| #R038 | chemical | health | mandatory | Bays and Estuaries pH Absolute Limits | aquatic life | MAC | 7.0 - 9.0 standard units | Receiving water limitation for bays, estuaries, and coastal lagoons | pH shall not be depressed below 7.0 nor raised above 9.0 | high |
| #R039 | chemical | health | mandatory | Bays and Estuaries pH Change Limit | aquatic life | MAC | <= 0.2 units | Receiving water limitation for bays, estuaries, and coastal lagoons | Change from normal ambient pH | high |
| #R040 | physical | aesthetic | mandatory | Lagoons and Estuaries Transparency Limit | aquatic life | MAC | >= 50% of depth | Measurement made by means of a standard Secchi disk | Excludes transparency decreases caused by rainfall runoff from undisturbed areas or dredging projects | high |
| #R041 | chemical | health | mandatory | Dissolved Oxygen Annual Mean Limit (Bays/Estuaries) | aquatic life | MAC | >= 7 mg/L | Annual mean dissolved oxygen concentration | Shall not be less than 7 mg/L more than 10% of the time | high |
| #R042 | operational | reporting | mandatory | SWPPP Submittal Deadline | other | requirement | 90 days | Submission of the SWPPP to the San Diego Water Board | From the effective date of the General Order or issuance of NOA | high |
| #R043 | design | operational | mandatory | Flow Measurement Device Accuracy | other | requirement | <= 5 percent | Accuracy of devices used to measure discharge volume | Maximum deviation from true discharge rates | high |
| #R044 | operational | operational | mandatory | Monitoring Instrument Calibration Frequency | other | requirement | 12 months | Calibration of all flow measurement devices | At least once per year or more frequently | high |
| #R045 | operational | operational | mandatory | QA/QC Duplicate Sample Frequency | other | requirement | 10 percent | Duplicate chemical analyses for laboratory quality assurance | Minimum frequency of samples | high |
| #R046 | microbiological | operational | mandatory | Toxicity Test Holding Time | aquatic life | requirement | <= 72 hours | Maximum time elapsed between sample collection and test initiation | 36-hour holding time should be targeted | high |
| #R047 | operational | operational | mandatory | Species Sensitivity Rescreening Frequency | aquatic life | requirement | 24 months | Frequency for conducting species sensitivity screening | Must rescreen every 24 months to determine the most sensitive species | high |
| #R048 | operational | operational | mandatory | BMP Inspection Frequency | other | requirement | 1 per week | Inspection of all work areas for proper BMP implementation | Conducted on a weekly basis all year round | high |
| #R049 | operational | operational | mandatory | Industrial Storm Water Sampling Window | other | requirement | 4 hours | Timeframe for collecting grab samples after discharge begins | Samples shall be collected within four hours of the start of the discharge | high |
| #R050 | operational | reporting | mandatory | Floating Drydock Notification Period | wastewater | requirement | 48 hours | Written notification prior to flooding a floating drydock | Must notify the San Diego Water Board 48 hours prior to submergence | high |
| #R051 | physical | health | mandatory | Sewage Discharge Depth Prohibition | wastewater | MAC | 30 feet deep at MLLW | Prohibition of treated sewage discharge to San Diego Bay | Applicable to portions of San Diego Bay based on depth | high |
| #R052 | chemical | reporting | mandatory | Toxic Pollutant Routine Notification Levels | wastewater | requirement | 100, 200, 500 ug/L | Thresholds for routine or frequent basis notification | 100 ug/L general; 200 ug/L for acrolein/acrylonitrile; 500 ug/L for specific dinitrophenols | high |
| #R053 | chemical | reporting | mandatory | Toxic Pollutant Infrequent Notification Levels | wastewater | requirement | 500 (ug/L), 1 (mg/L) ug/L or mg/L | Thresholds for non-routine or infrequent basis notification | 500 ug/L general; 1 mg/L for antimony | high |
| #R054 | physical | operational | mandatory | Storm Event Antecedent Dry Period | other | requirement | >= 7 days | Definition of a storm event for rainfall collection | Period of rainfall preceded by days without rainfall | high |
| #R055 | physical | operational | mandatory | Qualifying Storm Event Antecedent Dry Period | other | requirement | >= 48 hours | Requirement for a storm event to be considered qualifying for sampling | Must be preceded by hours with no discharge from any drainage area | high |
| #R056 | operational | operational | recommended | Laboratory QA/QC Success Rate Target | other | requirement | >= 80 percent | Target success rate for analysis of spiked samples | Part of the laboratory quality assurance plan | high |
| #R057 | physical | operational | mandatory | Ocean Bacterial Monitoring Zone Boundary | recreational water | requirement | 1000 (feet) or 30 (foot depth) feet | Definition of the zone where ocean bacterial objectives apply | Distance from shoreline or depth contour, whichever is further | high |
| #R058 | operational | operational | mandatory | Visual Observation Sampling Window | other | requirement | 1 hour | Window for conducting visual observations of storm water discharges | Visual observations shall occur during the first hour of discharge | high |
| #R059 | operational | operational | mandatory | Level 1 NAL Exceedance Evaluation Timeframe | other | requirement | 60 days | Timeframe to evaluate pollutant sources and SWPPP after obtaining Level 1 status | Triggered by an NAL exceedance | high |
| #R060 | operational | reporting | mandatory | Detailed TRE Work Plan Submittal Deadline | aquatic life | requirement | 15 days | Deadline to submit a detailed TRE Work Plan after receiving validated toxic results | Applicable when accelerated monitoring confirms toxicity | high |
| #R061 | operational | reporting | mandatory | CEDEN Monitoring Data Upload Deadline | other | requirement | 90 days | Deadline to upload receiving water and sediment monitoring results to CEDEN | Following the completion of monitoring | high |
| #R062 | operational | reporting | mandatory | Standard Monitoring Records Retention Period | other | requirement | 3 years | General retention period for monitoring info, calibration records, and reports | From the date of sample, measurement, or report | high |
| #R063 | operational | reporting | mandatory | Hazardous Materials Records Retention Period | other | requirement | 5 years | Retention period for records of hazardous materials used at the facility | Must be made available to the Board upon request | high |
| #R064 | operational | operational | mandatory | Invalid Toxicity Test Resampling Deadline | aquatic life | requirement | 14 days | Deadline to resample and re-test if a toxicity test is declared invalid | Applicable when test does not meet test acceptability criteria (TAC) | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | 40 CFR | Code of Federal Regulations, title 40 | high | |
| #D002 | AMEL | Average Monthly Effluent Limitation | high | |
| #D003 | AWEL | Average Weekly Effluent Limitation | high | |
| #D004 | Basin Plan | Water Quality Control Plan for the San Diego Basin | high | |
| #D005 | BAT | Best Available Technology | high | |
| #D006 | BMPs | Best Management Practices | high | |
| #D007 | CBOD 5 | Carbonaceous Biochemical Oxygen Demand (5-Day at 20 o C) | high | |
| #D008 | CCR | California Code of Regulations | high | |
| #D009 | CWA | Clean Water Act | high | |
| #D010 | Acute Toxicity | The 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 | |
| #D011 | Anti-Backsliding | Provisions 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 | |
| #D012 | Antidegradation | Policies 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 | |
| #D013 | Arithmetic Mean | Also called the average, is the sum of measured values divided by the number of samples. | high | |
| #D014 | Average Monthly Effluent Limitation (AMEL) | The highest allowable average of daily discharges over a calendar month, calculated as the sum of all daily discharges measured during a calendar month divided by the number of daily discharges measured during that month. | high | |
| #D015 | Average Weekly Effluent Limitation (AWEL) | The highest allowable average of daily discharges over a calendar week (Sunday through Saturday), calculated as the sum of all daily discharges measured during a calendar week divided by the number of daily discharges measured during that week. | high | |
| #D016 | Beneficial Uses | The 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 | |
| #D017 | Best 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 | |
| #D018 | Best 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 | |
| #D019 | Best 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 | |
| #D020 | Bioaccumulative Pollutants | Those substances taken up by an organism from its surrounding medium through gill membranes, epithelial tissue, or from food and subsequently concentrated and retained in the body of the organism. | high | |
| #D021 | Biochemical 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 | |
| #D022 | Chronic Toxicity | Chronic 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 | |
| #D023 | Composite Sample | Sample 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. | high | |
| #D024 | Conventional Pollutants | Pollutants 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 | |
| #D025 | Daily Discharge | Daily Discharge is defined as either: (1) the total mass of the constituent discharged over the calendar day (12:00 am through 11:59 pm) or any 24-hour period that reasonably represents a calendar day for purposes of sampling (as specified in the permit), for a constituent with limitations expressed in units of mass or; (2) the unweighted arithmetic mean measurement of the constituent over the day for a constituent with limitations expressed in other units of measurement (e.g., concentration). | high | |
| #D026 | Dilution Credit | Dilution Credit is the amount of dilution granted to a discharge in the calculation of a water quality-based effluent limitation, based on the allowance of a specified mixing zone. | high | |
| #D027 | Effluent Limitation | Any 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 | |
| #D028 | First Flush | Storm 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 | |
| #D029 | Grab Sample | An 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 | |
| #D030 | Industrial Storm Water | Storm water which has the potential to come in contact with areas used for manufacturing, processing, or raw materials storage at an industrial facility. | high | |
| #D031 | Inland Surface Waters | All surface waters of the state that do not include the ocean, enclosed bays, or estuaries. | high | |
| #D032 | Bypass | The intentional diversion of waste streams from any portion of a treatment facility. | high | |
| #D033 | Severe property damage | Substantial physical damage to property, damage to the treatment facilities, which causes them to become inoperable, or substantial and permanent loss of natural resources 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 | |
| #D034 | Upset | 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. 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 | |
| #D035 | CEQA | California Environmental Quality Act | high | |
| #D036 | CIWQS | California Integrated Water Quality System | high | |
| #D037 | CTR | California Toxics Rule | high | |
| #D038 | MDEL | Maximum Daily Effluent Limitation | high | |
| #D039 | MDL | Method Detection Limit | high | |
| #D040 | ML | Minimal Level | high | |
| #D041 | NPDES | National Pollutant Discharge Elimination System | high | |
| #D042 | TRE | Toxicity Reduction Evaluation | high | |
| #D043 | TST | Test of Significant Toxicity | high | |
| #D044 | No Exposure | all Industrial Materials and Activities are protected by a stormresistant shelter to prevent exposure to rain, snow, snowmelt, and/or runoff. | high | |
| #D045 | Industrial Materials and Activities | includes, but is not limited to, material handling activities or equipment, industrial machinery, raw materials, intermediate products, by-products, final products, or waste products. | high | |
| #D046 | Material Handling Activities | includes the storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product, or waste product. | high | |
| #D047 | Sealed | banded or otherwise secured, but without operational taps or valves. | high | |
| #D048 | Storm-Resistant Shelters | includes 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 | |
| #D049 | Compliance Storm Event | A Compliance Storm Event is 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 | |
| #D050 | 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 | |
| #D051 | Best 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 | |
| #D052 | Best 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 | |
| #D053 | Carcinogenic | Pollutants are substances that are known to cause cancer in living organisms. | high | |
| #D054 | Chlordane | Chlordane shall mean the sum of chlordane-alpha, chlordane-gamma, chlordane-alpha, chlordane-gamma, nonachlor-alpha, nonachlor-gamma, and oxychlordane. | high | |
| #D055 | Median | The middle measurement in a set of data. The median of a set of data is found by first arranging the measurements in order of magnitude (either increasing or decreasing order). If the number of measurements (n) is odd, then the median = X(n+1)/2. If n is even, then the median = (Xn/2 + X(n/2)+1)/2 (i.e., the midpoint between the n/2 and n/2+1). | high | |
| #D056 | Nuisance | Water 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 | |
| #D057 | Pollution Prevention | Pollution Prevention means any action that causes a net reduction in the use or generation of a hazardous substance or other pollutant that is discharged into water and includes, but is not limited to, input change, operational improvement, production process change, and product reformulation (as defined in Water Code section 13263.3). | high | |
| #D058 | Trash | Trash 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 | |
| #D059 | Water Quality Objectives | Numerical or narrative limits on constituents or characteristics of water designed to protect designated beneficial uses of the water. [Water Code section 13050(h)]. California's water quality objectives are established by the State and Regional Water Boards in the Water Quality Control Plans | high | |
| #D060 | Water Quality Standards | Provisions 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 |