The URL can be used to link to this page

Home My WebLink AboutDWQ-2024-005709Official Draft Public Notice Version Month Day, year The findings, determinations, and assertions contained in this document are not final and subject to change following the public comment period. FACT SHEET AND STATEMENT OF BASIS LITTLE MOUNTAIN SERVICE AREA RENEWAL PERMIT: DISCHARGE UPDES PERMIT NUMBER: UT0025569 MINOR MUNICIPAL FACILITY CONTACTSContact:Stephanie RussellPosition: Little Mountain Service Area Board ManagerPhone Number:(801) 732-2205Contact:John PricePosition:Little Mountain Service Area Board ChairmanPhone Number:(801) 732-2205Permittee and Facility Name:Little Mountain Service AreaMailing and Facility Address:9800 West 900 SouthOgden, Utah 84404Telephone:(801) 732-2205 DESCRIPTION OF FACILITY The Little Mountain Service Area (LMSA) owns and operates a Publicly Owned Treatment Work (POTW) system located at 9800 West 900 South in Ogden, Utah. The facility is located near the shoreline of the Great Salt Lake. Currently, the POTW is treating domestic wastewater from three local businesses and one residence. The three local businesses are Silver Linings, MJK Custom Fabrication, and Western Zirconium. The waste streams from Western Zirconium are sanitary wastewater, demineralizer regeneration, boiler blowdown, cooling tower blowdown, combined melting and fabrication wastewater, and pickle area rinses and floor washdown. The POTW treatment process includes three biological stabilization ponds, slow sand filtration, and UV disinfection. The design flow of this facility is 0.245 MGD. The discharge is to the West Warren Canal that combines with the Weber River, thence to the Great Salt Lake. SUMMARY OF CHANGES FROM PREVIOUS PERMIT There have been no major changes to the facility since the previous permit cycle. The whole effluent toxicity (WET) biomonitoring effluent limitation has been changed from acute (LC50>100% effluent) to chronic (IC25>8%). This is because the dilution of effluent to the receiving water is less than 20:1. The WET self-monitoring and reporting requirements have been reduced from both chronic and acute biomonitoring to only chronic biomonitoring. This is based on the Utah Pollutant Discharge Elimination System Permit and Enforcement Guidance Document for Whole Effluent Toxicity, dated February 2018. The effluent limitation for bis(2-ethylhexyl) phthalate has been modified in this UPDES permit renewal as a result of the Waste Load Analysis (WLA). The effluent limitation is now 7.75 ug/L. Self-monitoring and reporting frequency for influent and effluent metals has changed from twice a year to quarterly to align with the Pretreatment Monitoring and Reporting Requirements, listed in Part II.B.3. of this permit. Previously, transitional waters along the shoreline of the Great Salt Lake (GSL) below approximately 4,208 feet to the current lake level were classified as a 5E Water of the State. These transitional waters are now classified as both a 3D and 5E Waters of the State. Stormwater provisions have been removed as part of a Division of Water Quality (DWQ) programmatic separation of the previously combined UPDES Permits. LMSA may now be required to apply for and obtain separate UPDES Industrial Storm Water Permit coverage under the UPDES General Permit No. UTR000000, or an applicable exemption, as described further in the Storm Water section of this Fact Sheet. DISCHARGE DESCRIPTION OF DISCHARGE LMSA has been reporting self-monitoring results on Discharge Monitoring Reports (DMRs) on a monthly basis. There have been no discharges since the previous permit came into effect. OutfallDescription of Discharge Point 001 Located at latitude 4114'19" and longitude 11212'58". The discharge is to the West Warren Waste Ditch (canal) that flows to the North Fork of the Weber River, which flows into the Great Salt Lake. RECEIVING WATERS AND STREAM CLASSIFICATION If a discharge were to occur, it would be pumpedinto the West Warren Waste Ditch (canal), which enters the North Fork of the Weber River. The point where the West Warren Waste Ditch (canal) meets the delta of the North Fork of the Weber River is within the GSL transitional wetlands at an elevation between 4,200 and 4,205 ft. Utah Administrative Code (UAC) R317-2-6.5 lists transitional waters along the GSL geographical boundary below an approximate elevation of 4,208 feet to the current lake elevation of the open water of the GSL receiving their source water from… facilities requiring a UPDES Permit as a Class 3D and 5E Water of the State. The West Warren Waste Ditch (canal) is a Class 2B and 3E, according to UAC R317-2-13. Class 2B -- Protected for infrequent primary contact recreation. Also protected for secondary contact recreation where there is a low likelihood of ingestion of water or a low degree of bodily contact with the water. Examples include, but are not limited to, wading, hunting, and fishing. Class 3D --Protected for waterfowl, shore birds and other water-oriented wildlife not included in Classes 3A, 3B, or 3C, including the necessary aquatic organisms in their food chain. Class 3E -- Severely habitat-limited waters. Narrative standards will be applied to protect these waters for aquatic wildlife. Class 5E Transitional Waters along the Shoreline of the Great Salt Lake Geographical Boundary – Geographical Boundary -- All waters below approximately 4,208-foot elevation to the current lake elevation of the open water of the Great Salt Lake receiving their source water from naturally occurring springs and streams, impounded wetlands, or facilities requiring a UPDES permit. The geographical areas of these transitional waters change corresponding to the fluctuation of open water elevation. Beneficial Uses -- Protected for infrequent primary and secondary contact recreation, waterfowl, shore birds and other water-oriented wildlife including their necessary food chain. TOTAL MAXIMUM DAILY LOAD (TMDL) REQUIREMENTS According to DWQ’s 2024 303(d) Assessment, the receiving water body (Weber River, Weber River-1, UT16020102-001_00) is listed as impaired for benthic macroinvertebrates and a TMDL has not been completed for the segment of the water body. BASIS FOR EFFLUENT LIMITATIONS Limitations on total suspended solids (TSS), biochemical oxygen demand (BOD5), E. coli, pH, and percent removal for BOD5 and TSS are based on current Utah Secondary Treatment Standards, UAC R317-1-3.2. The oil and grease effluent limitation is based on best professional judgement (BPJ). This effluent limitation has been added because there is the reasonable potential for oil and grease to reach the lagoons from Western Zirconium, and a potential for other manufacturing facilities to discharge to the POTW. Bis(2-ethylhexyl) phthalate has historically been included in the LMSA UPDES permit because it has been reported that this compound is used by Western Zirconium. Dissolved oxygen (DO), bis(2-ethylhexyl) phthalate, and whole effluent toxicity (WET) standards are based on the WLA in order to meet water quality standards. Reasonable Potential Analysis Since January 1, 2016, DWQ has conducted reasonable potential analysis (RP) on all new and renewal applications received after that date. RP for this permit renewal was not conducted following DWQ’s September 10, 2015 Reasonable Potential Analysis Guidance (RP Guidance) because there was a lack of historical discharge data. The permit limitations are Parameter Effluent Limitations *a Maximum Monthly Avg Maximum Weekly Avg Yearly Average Daily Minimum Daily Maximum Total Flow 0.245 -- -- -- -- BOD5, mg/L BOD5 Min. % Removal 25 85 35 -- -- -- -- -- -- -- TSS, mg/L TSS Min. % Removal 25 85 35 -- -- -- -- -- -- -- Dissolved Oxygen, mg/L -- -- -- 5.0 -- E. coli, No./100mL 126 157 -- -- -- Phosphorus, lbs *k, *l, *i -- -- 746 -- -- WET, Chronic Biomonitoring -- -- -- -- IC25> 8% effluent Oil & Grease, mg/L -- -- -- -- 10.0 pH, Standard Units -- -- -- 6.5 9 Bis(2-ethylhexyl) phthalate, ug/L -- -- -- -- 7.75 SELF-MONITORING AND REPORTING REQUIREMENTSThe following self-monitoring requirements are generally the same as in the previous permit, however, the monitoring frequency for metals has increased from twice a year to quarterly and the WET monitoring has been changed from both chronic and acute to only chronic. These changes are specified in the “Summary of Changes from Previous Permit” section, above. The permit will require reports to be submitted monthly and annually, as applicable, on Discharge Monitoring Report (DMR) forms due 28 days after the end of the monitoring period. Effective January 1, 2017, monitoring results must be submitted using NetDMR unless the permittee has successfully petitioned for an exception. Lab sheets for biomonitoring must be attached to the biomonitoring DMR. Lab sheets for metals and toxic organics must be attached to the DMRs. Self-Monitoring and Reporting Requirements *a Parameter Frequency Sample Type Units Total Flow *b, *c Continuous Recorder MGD BOD5, Influent *d Effluent 2 X Monthly 2 X Monthly Composite Composite mg/L mg/L TSS, Influent *d Effluent 2 X Monthly 2 X Monthly Composite Composite mg/L mg/L E. coli 2 X Monthly Grab No./100mL pH 2 X Monthly Grab SU DO 2 X Monthly Grab mg/L Bis(2-ethylhexyl) phthalate *h 2 X Monthly Grab ug/L WET – Biomonitoring *f Ceriodaphnia - Chronic Fathead Minnows - Chronic 2nd & 4th Quarter 1st & 3rd Quarter Composite Composite Pass/Fail Pass/Fail Oil & Grease *e When Sheen Observed Grab mg/L Orthophosphate (as P), *g Effluent Monthly Composite mg/L Total Phosphorus (as P), *g Influent Effluent Monthly Monthly Composite Composite mg/L mg/L Phosphorus, lbs *g Total Kjeldahl Nitrogen TKN (as N), *g Influent Effluent Monthly Monthly Composite Composite mg/L mg/L Nitrate, NO3 *g Monthly Composite mg/L Nitrite, NO2 *g Monthly Composite mg/L Metals, Influent Effluent Quarterly Quarterly Composite/Grab Composite/Grab mg/L mg/L Organic Toxics, Influent Effluent Yearly Yearly Grab Grab mg/L mg/L*aSee Definitions, Part VIII, for definition of terms.*bFlow measurements of influent/effluent volume shall be made in such a manner that thepermittee can affirmatively demonstrate that representative values are being obtained.*cIf the rate of discharge is controlled, the rate and duration of discharge shall be reported.*dIn addition to monitoring the final discharge, influent samples shall be taken and analyzedfor this constituent at the same frequency as required for this constituent in the discharge.*eOil & Grease sampled when sheen is present or visible. If no sheen is present or visible, report NA. *fThechronic Ceriodaphnia will be tested during the 2ndand 4thquarters, and the chronic fathead minnows will be tested during the 1stand 3rdquarters. *gThese reflect changes required with the adoption of UCA R317-1-3.3, Technology-based Phosphorus Effluent Limits (TBPEL) rule. No TBPEL will be instituted for discharging treatment lagoons. Instead, each discharging lagoon will be evaluated to determine the current annual average total phosphorus load measured in pounds per year based on monthly average flow rates and concentrations. *hRP could not be run on this compound as sufficient data was not available. When sufficient data is available, DWQ will run RP to determine if bis(2-ethylhexyl) phthalate should remain in the permit. BIOSOLIDS The State of Utah has adopted the 40 CFR 503 federal regulations for the disposal of sewage sludge (biosolids) by reference. However, since this facility is a lagoon, there is not any regular sludge production. Therefore 40 CFR 503 does not apply at this time. In the future, if the sludge needs to be removed from the lagoons and is disposed in some way, the Division of Water Quality must be contacted prior to the removal of the sludge to ensure that all applicable state and federal regulations are met STORM WATER Separate storm water permits may be required based on the types of activities occurring on site. Permit coverage under the Multi Sector General Permit (MSGP) for Storm Water Discharges from Industrial Activities is required based on the Standard Industrial Classification (SIC) code for the facility and the types of industrial activities occurring. If the facility is not already covered, it has 30 days from when this permit is issued to submit the appropriate Notice of Intent (NOI) for the MSGP or exclusion documentation.Previously storm water discharge requirements and coverage were combined in this individual permit. These have been separated to provide consistency among permittees, electronic reporting for storm water discharge monitoring reports, and increase flexibility to changing site conditions. Permit coverage under the Construction General Storm Water Permit (CGP) is required for any construction at the facility which disturb an acre or more, or is part of a common plan of development or sale that is an acre or greater. A Notice of Intent (NOI) is required to obtain a construction storm water permit prior to the period of construction. Information onstorm water permit requirements can be found at http://stormwater.utah.gov PRETREATMENT REQUIREMENTS The permittee has not been designated for pretreatment program development because it does not meet conditions which necessitate a full program. The flow through the plant is less than five (5) MGD, there are no categorical industries discharging to the treatment facility, industrial discharges comprise less than 1 percent of the flow through the treatment facility, and there is no indication of pass through or interference with the operation of the treatment facility such as upsets or violations of the POTW's UPDES permit limits. Although the permittee does not have to develop a State-approved pretreatment program, any wastewater discharges to the sanitary sewer are subject to Federal, State and local regulations. Pursuant to Section 307 of the Clean Water Act, the permittee shall comply with all applicable Federal General Pretreatment Regulations promulgated, found in 40 CFR 403 and the State Pretreatment Requirements found in UAC R317-8-8. An industrial waste survey (IWS) is required of the permittee as stated in Part II of the permit. The IWS is to assess the needs of the permittee regarding pretreatment assistance. The IWS is required to be submitted within sixty (60) days after the issuance of the permit. If an Industrial User begins to discharge or an existing Industrial User changes their discharge the permittee must resubmit an IWS no later than sixty days following the introduction or change as stated in Part II of the permit. It is required that the permittee submit for review any local limits that are developed to the Division of Water Quality for review. If local limits are developed it is required that the permittee perform an annual evaluation of the need to revise or develop technically based local limits for pollutants of concern, to implement the general and specific prohibitions 40 CFR, Part 403.5(a) and Part 403.5(b). This evaluation may indicate that present local limits are sufficiently protective, need to be revised or should be developed. BIOMONITORING REQUIREMENTS A nationwide effort to control toxic discharges where effluent toxicity is an existing or potential concern is regulated in accordance with the Utah Pollutant Discharge Elimination System Permit and Enforcement Guidance Document for Whole Effluent Toxicity Control (biomonitoring), dated February 2018. Authority to require effluent biomonitoring is provided in Permit Conditions, UAC R317-8-4.2, Permit Provisions, UAC R317-8-5.3 and Water Quality Standards, UAC R317-2-5 and R317 -2-7.2. Since the facility is a Great Salt Lake discharger and because of the nature of the water to be treated, there is reasonable potential for toxics to be present. Therefore, a permit limit will require both acute and chronic WET testing for both species Ceriodaphnia dubia and Pimephales promelas (fathead minnow). However, there will only be limits for Chronic WET testing. The IC25for chronic testing will be greater than 8% effluent. The permit will contain the standard requirements for accelerated testing upon failure of a WET test, and a Preliminary Toxicity Investigation (PTI) and Toxicity Reduction Evaluation (TRE) as necessary. PERMIT DURATIONIt is recommended that this permit be effective for a duration of five (5) years.Drafted and Reviewed byJennifer Berjikian, Discharge Permit WriterDaniel Griffin, BiosolidsJennifer Robinson, PretreatmentLonnie Shull, BiomonitoringJordan Bryant, Storm WaterMike Allred, TMDL/WatershedJennifer Berjikian, Reasonable Potential AnalysisSuzan Tahir, Wasteload AnalysisUtah Division of Water Quality, (801) 536-4300PUBLIC NOTICEBegan: Month Day, YearEnded: Month Day, YearComments will be received at: 195 North 1950 West PO Box 144870 Salt Lake City, UT 84114-4870The Public Noticed of the draft permit was published on the Division of Water Quality webpage.During the public comment period provided under R317-8-6.5, any interested person may submit written comments on the draft permit and may request a public hearing, if no hearing has already been scheduled. A request for a public hearing shall be in writing and shall state the nature of the issues proposed to be raised in the hearing. All comments will be considered in making the final decision and shall be answered as provided in R317-8-6.12.ADDENDUM TO FSSOBDuring finalization of the Permit certain dates, spelling edits and minor language corrections were completed. Due to the nature of these changes they were not considered Major and the permit is not required to be re Public Noticed.Responsiveness Summary(Explain any comments received and response sent. Actual letters can be referenced, but not required to be included). This Page Intentionally Left Blank ATTACHMENT 1 Industrial Waste Survey This Page Intentionally Left BlankIndustrial Pretreatment Wastewater SurveyDo you periodically experience any of the following treatment works problems:foam, floaties or unusual colorsplugged collection lines caused by grease, sand, flour, etc.discharging excessive suspended solids, even in the wintersmells unusually badwaste treatment facility doesn’t seem to be treating the waste rightPerhaps the solution to a problem like one of these may lie in investigating the types and amounts of wastewater entering the sewer system from industrial users.An industrial user (IU) is defined as a non-domestic user discharging to the waste treatment facility which meets any of the following criteria: 1.has a lot of process wastewater (5% of the flow at the waste treatment facility or more than 25,000 gallons per work day.)Examples:Food processor, dairy, slaughterhouse, industrial laundry.2.is subject to Federal Categorical Pretreatment Standards;Examples:metal plating, cleaning or coating of metals, blueing of metals, aluminum extruding, circuit board manufacturing, tanning animal skins, pesticide formulating or packaging, and pharmaceutical manufacturing or packaging,3.is a concern to the POTW.Examples:septage hauler, restaurant and food service, car wash, hospital, photo lab, carpet cleaner, commercial laundry.All users of the water treatment facility are prohibited from making the following types of discharges:1.A discharge which creates a fire or explosion hazard in the collection system.2.A discharge which creates toxic gases, vapor or fumes in the collection system.3.A discharge of solids or thick liquids which creates flow obstructions in the collection system.4.An acidic discharge (low pH) which causes corrosive damage to the collection system.5.Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will cause problems in the collection system or at the waste treatment facility.6.Waste haulers are prohibited from discharging without permission. (No midnight dumping!)When the solution to a sewer system problem may be found by investigating the types and amounts of wastewater entering the sewer system discharged from IUs, it’s appropriate to conduct an Industrial Waste Survey.An Industrial Waste Survey consists of:Step 1: Identify Industrial UsersMake a list of all the commercial and industrial sewer connections.Sources for the list:business license, building permits, water and wastewater billing, Chamber of Commerce, newspaper, telephone book, yellow pages.Split the list into two groups:domestic wastewater only--no further information neededeveryone else (IUs)Step 2: Preliminary InspectionGo visit each IU identified on the “everybody else” list. Fill out the Preliminary Inspection Form during the site visit.Step 3: Informing the StatePlease fax or send a copy of the Preliminary inspection form (both sides) to:Jennifer RobinsonDivision of Water Quality288 North 1460 WestP.O. Box 144870Salt Lake City, UT 84114-4870Phone: (801) 536-4383Fax:(801) 536-4301E-mail:jenrobinson@utah.govF:\WP\Pretreatment\Forms\IWS.doc PRELIMINARY INSPECTION FORM INSPECTION DATE / / Name of Business Person Contacted Address Phone Number Description of Business Principal product or service: Raw Materials used: Production process is: [ ] Batch [ ] Continuous[ ] Both Is production subject to seasonal variation? [ ] yes[ ] no If yes, briefly describe seasonal production cycle. This facility generates the following types of wastes (check all that apply): 1. [ ] Domestic wastes(Restrooms, employee showers, etc.) 2. [ ] Cooling water, non-contact3. [ ] Boiler/Tower blowdown 4. [ ] Cooling water, contact5. [ ] Process 6. [ ] Equipment/Facility washdown7. [ ] Air Pollution Control Unit 8. [ ] Storm water runoff to sewer9. [ ] Other describe Wastes are discharged to (check all that apply): [ ] Sanitary sewer[ ] Storm sewer [ ] Surface water[ ] Ground water [ ] Waste haulers[ ] Evaporation [ ] Other (describe) Name of waste hauler(s), if used Is a grease trap installed?YesNo Is it operational?YesNo Does the business discharge a lot of process wastewater?More than 5% of the flow to the waste treatment facility?YesNoMore than 25,000 gallons per work day?YesNo Does the business do any of the following:[ ] Adhesives[ ] Car Wash[ ] Aluminum Forming[ ] Carpet Cleaner[ ] Battery Manufacturing[ ] Dairy[ ] Copper Forming[ ] Food Processor[ ] Electric & Electronic Components[ ] Hospital[ ] Explosives Manufacturing[ ] Laundries[ ]Foundries[ ] Photo Lab[ ]Inorganic Chemicals Mfg. or Packaging[ ] Restaurant & Food Service[ ] Industrial Porcelain Ceramic Manufacturing[ ] Septage Hauler[ ] Iron & Steel[ ] Slaughter House [ ] Metal Finishing, Coating or Cleaning [ ] Mining [ ] Nonferrous Metals Manufacturing [ ]Organic Chemicals Manufacturing or Packaging [ ] Paint & Ink Manufacturing [ ] Pesticides Formulating or Packaging [ ] Petroleum Refining [ ] Pharmaceuticals Manufacturing or Packaging [ ] Plastics Manufacturing [ ] Rubber Manufacturing [ ] Soaps & Detergents Manufacturing [ ] Steam Electric Generation [ ] Tanning Animal Skins [ ] Textile Mills Are any process changes or expansions planned during the next three years? YesNo If yes, attach a separate sheet to this form describing the nature of planned changes or expansions. Inspector Waste Treatment Facility Please send a copy of the preliminary inspection form (both sides) to: Jennifer Robinson Division of Water Quality P. O. Box 144870 Salt Lake City, Utah 84114-4870 Phone:(801) 536-4383 Fax:(801) 536-4301E-Mail:jenrobinson@utah.gov Industrial User Jurisdiction SIC Codes Categorical Standard Number Total Average Process Flow (gpd) Total Average Facility Flow (gpd) Facility Description 1 2 3 4 5 6 7 8 9 10 11 This Page Intentionally Left Blank ATTACHMENT 2 Wasteload Analysis This Page Intentionally Left Blank