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Home My WebLink AboutWQ0000193_Compliance Evaluation Inspection_20210830DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 ROY COOPER .'. Governor _ ELIZABETH S. BISER Secretary won S. DANIEL SMITH NORTH CAROLINA Director Environmental Qualify August 30, 2021 Joseph Patrick McCann Village of Bald Head Island PO Box 3009 Bald Head Island, NC 28461-3009 SUBJECT: Compliance Inspection Report Village of Bald Head Island WWTP Non -discharge Permit No. WQ0000193 Brunswick County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Village of Bald Head Island WWTP on 8/26/2021. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in Non -discharge Permit No. WQ0000193. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". There were no significant issues or findings noted during the inspection and therefore, a response to this inspection report is not required. If you should have any questions, please do not hesitate to contact Bryan Lievre with the Water Quality Regional Operations Section in the Wilmington Regional Office at 910-796-7215 or via email at bryan.lievre@ncdenr.gov. ATTACHMENT cc: Laserfiche Sincerely, DocuSigned by: EWE3ABA14AC7DC434... mLt a, SaI� GIA,t�j—� l" Morelia Sanchez -King, Regional Supervisor Water Quality Regional Operations Section Wilmington Regional Office Division of Water Resources, NCDEQ D �� North Carolina Department of Environmental QualityDivision of Water Resources ,./ Wilmington Regional Office 1127 Cardinal Drive Extension I Wilmington. North Carolina 26405 910.796,7215 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Compliance Inspection Report Permit: WQ0000193 Effective: 02/15/21 Expiration: 05/31/27 Owner : Village of Bald Head Island SOC: Effective: Expiration: Facility: Village of Bald Head Island WWTP County: Brunswick 256 Edward Teach Wynd Region: Wilmington Bald Head Island NC 284613069 Contact Person: Joseph Patrick McCann Title: Utilities Director Phone: 910-457-7351 Directions to Facility: System Classifications: SI, WW3, Primary ORC: David Albert Suther Secondary ORC(s): On -Site Representative(s): Certification: 27326 Phone:910-457-7352 Related Permits: WQ0000455 Lewis Farms and Liquid Waste Inc - Lewis Farms and Liquid Waste RLAP Inspection Date: 08/26/2021 Entry Time 12:30PM Exit Time: 03:30PM Primary Inspector: Bryan Lievrq Phone: 910-796-7215 ocuSigned by: Secondary Inspector(s): B2r�an �irvt� 4249ABE 37443E... Tom harring on Phone Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: High Rate Infiltration Facility Status: Compliant ❑ Not Compliant Question Areas: Treatment Flow Measurement -Effluent Treatment Flow Measurement -Influent Miscellaneous Questions Treatment Flow Measurement -Water Treatment Treatment Barscreen Use Records Treatment Filters Record Keeping Treatment Activated Sludge Treatment Sludge Storage/Treatment Treatment Disinfection Treatment Flow Measurement End Use -Reuse Standby Power (See attachment summary) Page 1 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine Inspection Summary: A routine compliance inspection of the Village of Bald Head Island Wastewater Treatment Facility (WWTF), was performed on August 26, 2021. The purpose of the inspection was to verify that the facility is operating in compliance with the conditions and limitations specified within Permit WQ0000193. Staff members David Suther and Nathan Lindsay were present during the inspection. The facility is permitted for a 300,000 gallon per day (gpd) reclaimed water generation, conjunctive reclaimed water utilization, high -rate infiltration and non -conjunctive reclaimed water utilization facility consisting of: The Timber Creek influent lift station consisting of- - A pump station with two submersible pumps, each rated at 700 gpm; and, - All associated piping, valves, controls, and appurtenances; A reclaimed water generation system consisting of: - A 10-inch ultrasonic influent flow meter; - A 223,000-gallon aerated flow equalization basin served by a 449 cubic feet per minute (cfm) blower; - A screw type mechanical bar screen with bag compactor; - Three 155,000-gallon sequencing batch reactors (SBRs) served by 382 cfm blowers, three dissolved oxygen (DO) sensors, and three pH sensors; - A 28,000-gallon post equalization/aeration basin with three submersible pumps each rated at 139 gpm and one floating aerator; - Four 40 horsepower (hp) and one 30 hp blowers (serving EQ basins); - Two Aqua Disk filters each with a surface area of 215.2 square feet and a hydraulic loading rate up to 3 gallons per minute per square foot (gpm/ft2); - A backwash pump station with two submersible pumps, each rated at 50 gpm; - An alkalinity feed system with an 18 gpm air -operated double diaphragm polypropylene pump to transfer chemical from the totes to a 500-gallon magnesium hydroxide storage tank, served by two 0.4 gpm chemical metering pumps and a 2 horsepower (hp) mixer; - An alum feed system with an 18 gpm air -operated double diaphragm polypropylene pump to transfer chemical from the totes to a 500-gallon liquid alum storage tank served by two 0.4 gpm chemical metering pumps; - Two duplex pumps for carbon feed source; - 35 linear feet of 10-inch diameter ductile iron plant effluent recycle force main; - A 336,000-gallon aerobic digester with three compartments, each with a floating aerator; - An ultraviolet (UV) light disinfection system with a redundant back- up system and each system utilizing 16 bulbs; - A secondary tablet chlorine disinfection unit; - An effluent pump station with two submersible pumps each rated at 556 gpm; - An 8-inch effluent magnetic flow meter; and, - All associated piping, valves, controls, and appurtenances. A reclaimed water distribution line consisting of: - Approximately 1,200 linear feet of 10-inch force main; and, - All associated piping, valves, controls, and appurtenances. The following reclaimed water storage structures: - Conservation Pond; - Irrigation Pond; - Pond 6; - Pond 7; and, - All associated piping, valves, controls, and appurtenances. A 400,000 gpd conjunctive reclaimed water utilization system consisting of: - A 52.2-acre (Site C-1) conjunctive utilization area; Page 2 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine - A 3.43-acre (Site C-2) conjunctive utilization area; and, - All associated piping, valves, controls, and appurtenances. A 250,000 gpd non -conjunctive reclaimed water utilization system consisting of: - A 46.3-acre (Site NC-1) non -conjunctive utilization area; and, - All associated piping, valves, controls, and appurtenances. The continued operation of the high -rate infiltration facilities consisting of; - Pond 4 with an area of 0.32-acres and a loading rate of 5.43 gpd/ft2; - Pond 5 with an area of 1.38-acres and a loading rate of 5.43 gpd/ft2; and, - All associated piping, valves, controls, and appurtenances. According to system staff, valves control the flow of the effluent to their final destination. Although the valve to the Conservation Pond is normally open, all others are normally closed. If an in -line turbidity meter determines that the concentration exceeds 10 milligrams per liter (mg/L), flow is automatically routed to Ponds 4 and 5. Otherwise valves are opened and closed to properly maintain levels in each of the ponds. Flows for 2019 averaged approximately 85,000 gpd in the winter and 196,000 gpd during the summer and in 2020,113,000 gpd in the winter and 240,000 gpd in the summer. A review of monitoring records since the last inspection indicate that the system was issued one NOV for slightly exceeding the monthly effluent average in October 2020 for total phosphorous and one NOD for exceeding the daily maximum for total ammonia nitrogen on 5/19/2020. Limits for total ammonia nitrogen were exceeded in monitoring wells MW-3 and MW-5 in November 2019 and monitoring wells MW-1, MW-5 and MW-7 have also intermittently experienced exceedances of total dissolved solids. As mentioned within past reports, TDS is typical in groundwater in an island environment, and the Wilmington Regional Office will continue to monitor results. During the inspection, it was discovered that the system may have unknowingly allowed the installation of simplex pump stations which pump into a force main. Staff were informed that these types of connections would require a permit from DWR unless it is otherwise allowed within 15A NCAC 2T .0303. The operators were very knowledgeable of the facility and the facility seemed to be well maintained. Records were reviewec and found to be detailed, well organized and complete. The facility is compliant with the non -discharge permit WQ0007569. Please review the comment sections of the inspection report for more details. Page 3 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine Type Yes No NA NE Lagoon Spray, LR ❑ Activated Sludge Spray, LR ❑ Single Family Spray, LR ❑ Activated Sludge Drip, LR ❑ Activated Sludge Spray, HR ❑ Recycle/Reuse ❑ Single Family Drip ❑ Reuse (Quality) Infiltration System Treatment Yes No NA NE Are Treatment facilities consistent with those outlined in the current permit? 0 ❑ ❑ ❑ Do all treatment units appear to be operational? (if no, note below.) 0 ❑ ❑ ❑ Comment: Treatment Flow Measurement -Influent Yes No NA NE Is flowmeter calibrated annually? 0 ❑ ❑ ❑ Is flowmeter operating properly? ❑ ❑ ❑ Does flowmeter monitor continuously? ❑ ❑ ❑ Does flowmeter record flow? ❑ ❑ ❑ Does flowmeter appear to monitor accurately? 0 ❑ ❑ ❑ Comment: The flow meter was last calibrated by JS Dismuke Co, Inc 2/9/2021 Treatment Flow Measurement -Water Use Records Yes No NA NE Is water use metered? ❑ ❑ ❑ Are the daily average values properly calculated? ❑ ❑ 0 ❑ Comment: Treatment Flow Measurement -Effluent Yes No NA NE Is flowmeter calibrated annually? ❑ ❑ ❑ Is flowmeter operating properly? ❑ ❑ ❑ Does flowmeter monitor continuously? ❑ ❑ ❑ Does flowmeter record flow? ❑ ❑ ❑ Does flowmeter appear to monitor accurately? ❑ ❑ ❑ Comment: Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Page 4 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine Is generator tested weekly by interrupting primary power source? 0 ❑ ❑ ❑ Is generator operable? ❑ ❑ ❑ Does generator have adequate fuel? ❑ ❑ ❑ Comment: Facility staff test the generator weeekly under load. Power Pro Tech is contracted to maintain the generator. Treatment Barscreen Yes No NA NE Is it free of excessive debris? 0 ❑ ❑ ❑ Is disposal of screenings in compliance? 0 ❑ ❑ ❑ Are the bars spaced properly? ❑ ❑ ❑ Is the unit in good condition? 0 ❑ ❑ ❑ Comment: Recovered solids are placed in a dumpster with other debris and brought to the Brunswick County landfill for disposal. Treatment Activated Sludge Yes No NA NE Is the aeration mechanism operable? ❑ ❑ ❑ Is the aeration basin thoroughly mixed? ❑ ❑ ❑ Is the aeration equipment easily accessed? ❑ ❑ ❑ Is Dissolved Oxygen adequate? ❑ ❑ ❑ Are Settleometer results acceptable? ❑ ❑ ❑ Is activated sludge an acceptable color? 0 ❑ ❑ ❑ Comment: All three of the SBRs were in operation during the inspection. The one unit observed receiving air seemed to be well mixed. Treatment Filters Yes No NA NE Is the filter media present? ❑ ❑ ❑ Is the filter media the correct size and type? ❑ ❑ ❑ Is the air scour operational? ❑ ❑ ❑ Is the scouring acceptable? ❑ ❑ ❑ Is the clear well free of excessive solids? ❑ ❑ ❑ Is the mud well free of excessive solids and filter media? ❑ ❑ ❑ Does backwashing frequency appear adequate? 0 ❑ ❑ ❑ Comment: There are 2 cloth Aqua Disk filters that are backwashed every 6 hours, or as needed. Treatment Sludge Storage/Treatment Yes No NA NE Is the aeration operational? 0 ❑ ❑ ❑ Is the aeration pattern even? 0 ❑ ❑ ❑ If required, are Sanitary "Ts" present in tankage? ❑ ❑ 0 ❑ Comment: Sludge is removed by Lewis Farms (Permit WQ0000455) and documented on a Sludge Hauling Log. Page 5 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine Treatment Disinfection Yes No NA NE Is the system working? 0 ❑ ❑ ❑ Do the fecal coliform results indicate proper disinfection? 0 ❑ ❑ ❑ Is there adequate detention time (>=30 minutes)? ❑ ❑ ❑ Is the system properly maintained? ❑ ❑ ❑ If gas, does the cylinder storage appear safe? ❑ ❑ ❑ Is the fan in the chlorine feed room and storage area operable? ❑ ❑ ❑ Is the chlorinator accessible? ❑ ❑ ❑ If tablets, are tablets present? ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ ❑ Is contact chamber free of sludge, solids, and growth? ❑ ❑ ❑ If UV, are extra UV bulbs available? ❑ ❑ ❑ If UV, is the UV intensity adequate? ❑ ❑ ❑ # Is it a dual feed system? ❑ ❑ ❑ Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? ❑ ❑ ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ ❑ If yes, then what is the EPA twelve digit ID Number? (1 000-- ) If yes, then when was the RMP last updated? Comment: There are 2 UV banks, set up in series and each bank contains 16 bulbs. One bank of spare bulbs and sleeves were present on -site. The system has a secondary tablet chlorinator and a 5-gallon bucket of spare tablets is maintained on -site. Record Keeping Yes No NA NE Is a copy of current permit available? ❑ ❑ ❑ Are monitoring reports present: NDMR? ❑ ❑ ❑ NDAR? ❑ ❑ ❑ Are flow rates less than of permitted flow? ❑ ❑ ❑ Are flow rates less than of permitted flow? ❑ ❑ ❑ Are application rates adhered to? ❑ ❑ ❑ Is GW monitoring being conducted, if required (GW-59s submitted)? ❑ ❑ ❑ Are all samples analyzed for all required parameters? ❑ ❑ ❑ Are there any 2L GW quality violations? ❑ ❑ ❑ Is GW-59A certification form completed for facility? ❑ ❑ ❑ Is effluent sampled for same parameters as GW? ❑ ❑ ❑ Do effluent concentrations exceed GW standards? ❑ ❑ ❑ Are annual soil reports available? ❑ ❑ ❑ # Are PAN records required? ❑ ❑ ❑ # Did last soil report indicate a need for lime? ❑ ❑ ❑ Page 6 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine If so, has it been applied? Are operational logs present? Are lab sheets available for review? Do lab sheets support data reported on NDMR? Do lab sheets support data reported on GW-59s? Are Operational and Maintenance records present? Were Operational and Maintenance records complete? Has permittee been free of public complaints in last 12 months? Is a copy of the SOC readily available? No treatment units bypassed since last inspection? Comment: Operational and maintenance records were orqanized and complete. Trackinq forms ❑❑■❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑❑■❑ ■❑❑❑ document SBRs, blowers, and disk filter operations. Logs were also present to document flows to and pond levels. This informaiton as well as other pertinent data is entered into a computer spreadsheet for tracking. Calibration records for pH and DO were complete. All other parameters are performed bV Envirochem, lab certification #94. Recommended to system staff the need to maintain control of the samples and document this information on the chain of custody for all lab samples. End Use -Reuse Yes No NA NE Is the acreage in the permit being utilized? ❑ ❑ ❑ Does the acreage specified in the permit correspond to the measured acreage at the site? ❑ ❑ ❑ Are all essential units provided in duplicate? ❑ ❑ ❑ Is an automatically activated standby power source available? ❑ ❑ ❑ Is the equalization capacity adequate? ❑ ❑ ❑ Is aerated flow equalization present? ❑ ❑ ❑ Has the turbidity meter been calibrated in the last 12 months? ❑ ❑ ❑ Does the turbidity meter have recording capabilities? ❑ ❑ ❑ Is all flow diverted at the appropriate times? ❑ ❑ ❑ Is all upset wastewater diverted from reuse storage unit? ❑ ❑ ❑ Is all upset wastewater treated, retreated, or disposed of acceptably? ❑ ❑ ❑ Is upset wastewater treated prior to discharge to irrigation storage? ❑ ❑ ❑ Is public access restricted from irrigation area during active site use? ❑ ❑ ❑ If golf course, is a sign posted in plain sight on the club house? ❑ ❑ ❑ Is the cover crop acceptable? ❑ ❑ ❑ Are buffers adequate? ❑ ❑ ❑ Is the site free of ponding/runoff? ❑ ❑ ❑ Is the acreage in the permit being utilized? ❑ ❑ ❑ Is the application equipment acceptable? ❑ ❑ ❑ Is the application area free of limiting slopes? ❑ ❑ ❑ Page 7 of 8 DocuSign Envelope ID: 0D00CA12-21 D9-49B5-9B9A-7CBB03DD4302 Permit: WQ0000193 Owner - Facility: Village of Bald Head Island Inspection Date: 08/26/2021 Inspection Type: Compliance Evaluation Reason for Visit: Routine How close is the closest water supply well? ❑ ❑ ❑ Are any supply wells within the CB? ❑ ❑ ❑ Are any supply wells within 250' of the CB? ❑ ❑ ❑ Is municipal water available in the area? 0 ❑ ❑ ❑ Are GW monitoring wells required? 0 ❑ ❑ ❑ Are GW monitoring wells located properly w/ respect to RB and CB? ❑ ❑ ❑ Are GW monitoring wells properly constructed, including screened interval? ❑ ❑ ❑ Comment: The facilitv does not have a 5-dav upset pond. Instead, effluent is routed to the high -rate infiltration ponds when fecal or turbidity limits are out of reuse compliance. All of the conjunctive reclaimed water irrigation is managed by the staff of the Bald Head Island Club. The remaining disposal is managed by the WWTF. Ponds 4 and 5 and adjacent areas were inspected and found to be in satisfactory condition. A nearby montoring well labelled MW-4 was also inspected and found to have a broken concrete slab around the stick-up well casing. A request was made for staff to repair the slab to prevent surficial intrusion of contaminants into the well, per 15A NCAC 2C .0108(4)(4). Page 8 of 8