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HomeMy WebLinkAboutWQ0035809_Startup Inspection_20190829VAlle ROY COOPER_- Governor .. K41CHAEL S. REGAN Sceret rrr y LINDA CULPEPPER NORTH CAROLINA ow(tor Environmental Qual" Certified Mail # Return Receipt Requested September 27, 2019 Rebecca Manning Old North State Water Company LLC PO Box 670 Bailey, NC 27807-0670 SUBJECT: Startup Inspection Report Stateside WWTP Non -discharge Permit No. WQ0035809 Onslow County Dear Permittee: The North Carolina Division of Water Resources conducted the startup inspection of the Stateside WWTP on 8/29/2019 to verify that the facility can operate in compliance with the conditions and limitations specified in Non -discharge Permit No. WQ0035809. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". Please read carefully all the sections of the CIR in order to address in any items that require attention. Please respond in writing to this office within 30 days of your receipt of this letter regarding your plans or measures to be taken to address the following issues: *Evaluate thick cake layer on the surface of the tanks: On inspection day, it was observed a thick cake layer on the surface of the pre -anoxic #I, membrane, and sludge holding tanks. The WiRO recommends contacting the manufacturer to determine if the cake layer as formed, more particularly on top of the membrane tank, reflects a normal operation. Because of the thickness of the cake layer, mixing in the pre -anoxic tank #1 was almost imperceptible. Similarly, aeration in the sludge holding tank was not apparent. *Track high total phosphorus concentrations: Mr. Jeff Jarman (ORC) commented that total phosphorus (TP) concentrations from two sample events were high (TP-7 mg/1- permit limit= 2 mg/1) North Cs ra ra Departraeat of Eovk"merta QDa:ay I ➢bAsionof Water Resocroes W P_ ngton Reg oml OfFw 1127 Carding: ❑nva Extensan I Wihmngton, North Caro:iva 23405 910-795-7215 and that the plan was to start chemical addition (alum) for TP removal. It would be useful to investigate if the cake thick layer (i.e. old sludge?) would be contributing to the high TP. *Install staff gauge in high -rate infiltration basin #5: High -rate infiltration basin #5 started operation. On inspection day, the staff gauge for freeboard recording had not been installed. Mr. Jarman indicated that the provider requires 2 weeks for delivery. Once the staff gauge is available, levels in the basin must be reshot. Please provide a picture of the gauges when installed. •Update infiltration capacity calculations: Please provide updated calculations for the infiltration capacity of basin #5. The calculation report in our files is from November 2011. Also, provide a schedule of the plans for the evaluation of basins #3 and #4. •Provide a map with the review and compliance boundaries: Please provide a map showing the delineation of the review and compliance boundaries and the location of the water supply well that was used to provide water for the basin's test. Determine if the water supply well is within the compliance boundary. On 09/03/2018, Mr. Stewart provided a map with the approximate location of the well. Verification of the location of the well related to the compliance boundary is required since the well must be abandoned (if located within the compliance boundary) and records (GW-30) submitted to the Wilmington Regional Office. *Provide site -specific narrative for the operation of the Stateside WWTP and Operators training: WiRO reviewed the O&M plan provided by the WWTP consultant, and noticed that the document is a compilation of printouts from the manufacturers of the many components of the plant. It has a general information section on mmf systems which does not describe the specific operating (i.e. chemical addition, MLSS operating concentration, flow recirculation, etc.) conditions for the Stateside WWTP. The writer requested on an e-mail to Envirolink on 09/26/2019, to provide a narrative describing the operation of this system which would also help the operators' training in this new membrane technology. The narrative must be tailored to this site. WiRO emphasizes the need of the operators' training. If you should have any questions, please do not hesitate to contact Morella Sanchez -King with the Water Quality Regional Operations Section in the Wilmington Regional Office via email at morella.sanchez-king@ncdenr.gov. Sincerely, ADoAc1uuSi'g'ne-d by: Iv^uq� r VWY �� 6 v E3ABA14AC7DC434_ Morella Sanchez -King, Regional Supervisor Water Quality Regional Operations Section Wilmington Regional Office Division of Water Resources, NCDEQ ATTACHMENTS Cc: Uploaded to Laserfiche North Ca rara Departreeat of EnvironmentalQDa:@y I D:uspnof Water Resoumes W P_ngton Reg am:OfFw 1 127 CardmiDr, eExtensun I Wi!m,ngton, North,=aro::na 23405 1310-796-7215 Compliance Inspection Report Permit: WQ0035809 Effective: 03/01/17 Expiration: 02/28/22 owner: Old North State Water Company LLC SOC: Effective: Expiration: Facility: Stateside WWTP County: Onslow Gum Branch Rd Region: Wilmington Jacksonville NC 28540 Contact Person: Tracy D Miller Title: Envirolink Area Manager Phone: 919-437-6001 Directions to Facility: Hwy 17 N to Jacksonville, West on Hwy 258/Hwy 24, right on Rhodestown Bridge Rd., left on Gum Branch Rd., right on Quaker Bridge Rd., take last dirt road on right before creek bridge. System Classifications: WW3, Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 08/29/2019 EntryTime: 10:OOAM Primary Inspector: Morelia Sanchez -King DocuSigned by: Secondary Inspector(s): S. _f 6" E3ABA 14AC 7 D C434�_ �U,t�� Reason for Inspection: Routine Permit Inspection Type: High Rate Infiltration Facility Status: ❑ Compliant ❑ Not Compliant Question Areas: Treatment Flow Measurement -Effluent Treatment Flow Measurement -Water Use Records Treatment Filters Treatment Sludge Storage/Treatment Treatment Disinfection Treatment Return pumps Wells (See attachment summary) Exit Time: 11:30AM Phone: 910-796-7218 Inspection Type: Compliance Evaluation Treatment Flow Measurement -Influent Treatment Record Keeping Treatment Influent Pump Station End Use -Infiltration Storage Coastal Requirements Miscellaneous Questions Treatment Barscreen Treatment Activated Sludge Treatment Clarifiers Treatment Flow Measurement Standby Power Page 1 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Reason for Visit: Routine Inspection Summary: Two inspections (preliminary inspection: July 15 and start up inspection: August 29, 2019) were conducted to document the progress of the membrane bioreactor (MBR) wastewater treatment plant towards full operation. On July 15, 2019 the following personnel were present for the inspection, (1) for the permittee and its consultants: Robert Burgin, Chuck Donnel, and Jeff Jarman, (2) for the Division of Water Resources/ Wilmington Regional Office (WiRO): Geoff Kegley, Helen Perez, Morella Sanchez King, and Tom Tharrington. On August 29, 2019 the following personnel were present for the inspection: (1) for the permittee and its consultants: Chuck Donnel and Jeff Jarman, (2) for the DWR/ WiRO: Morella Sanchez King and Bryan Lievre. The Division of Water Resources appreciates Old North State staff and consultants for the assistance provided during both inspections. The Stateside WWTF comprises the wastewater treatment plant and three high -rate infiltration basins for effluent disposal. Biological treatment is provided by a MBR, type: "Max Flow Membrane Filtration" (mmf). The treatment system consists of the following components: contact fine screen, equalization, oxic, anoxic II, anoxic I, membrane (mmf system), sludge holding, and pumps, blowers, SCADA system. On both inspection days, it seemed that all components of the system were in place, as described in the permit. The disposal system consists of three high -rate infiltration basins (numbered: 3, 4, and 5). The three basins have been constructed, but only one is in operation. The Stateside 100,000 GPD- WWTP received full certification by Robert G. Burgin, PE in January 2019 while the disposal system was partially certified by Timothy M. Stewart, PE in June 2019. Mr. Stewart tested and certified basin #5 for a capacity of 50,000 GPD. Basins 4 and 5 should not be used until tested and certified. Therefore, the capacity of the system is limited to the disposal capacity of 50,000 gpd. Below is a summary of the items that were discussed during the preliminary inspection on 7/15/2019 and that have been resolved: • Continue pumping and hauling. On inspection day, the plant was not ready to process domestic wastewater until its start-up authorization. • Further testing and process control adjustments should be performed with clean water. Since a startup inspection had not been performed, sewage water could not be used during the testing period. • Do not discharge to any of the infiltration basins. Infiltration Basin #5 could be used after certification and monitoring wells sampling. • Configure the groundwater lowering system discharge so that it discharges to the appropriate outlet structure and include permanent abandonment of the temporary GW lowering discharge pipe (the discharge without the flow meter). • Provide evidence of the calibration of all meters, probes, etc. • Influent pump station: needed cleaning, there was an excess of grease/solids/debris covering 100% of the water surface. Provide identification, address, and contact phone number at the gate of the pump station. Timeline of activities after preliminary inspection on 07/15, towards the facility start up: • The WWTP was seeded on July 31 st and the consulting engineers established automatic operation of the facility on that date • On August 1st Envirochem was on -site to take samples of WWTP effluent, monitoring wells and groundwater lowering effluent. The Upstream and downstream samples from Margaret Branch could not be taken as it was dry. • On August 1 st the flowmeters associated with the site were inspected and calibrated by a contract vendor. • As of August 15th, results of the sampling event had not been received at the WiRO, but weekly conversations with the ORC indicate the facility is operating as designed. The startup Inspection on 08/29/2019 was to verify the operation of the WWTP, disposal area (basin #5), and sampling points. Jeff Jarman (ORC) and Chuck Donnel with Envirolink provided assistance to DWR inspectors, Morella Sanchez King and Bryan Lievre. We are providing the following observation and/or comments: Page 2 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Reason for Visit: Routine • The influent pump station is now working. On inspection day, it looked well maintained, with signage for contact information at the gate. The high water alarm and generator worked well when a high water and power shutoff were simulated. Water supply at the P.S. needs to be installed. • The plant was seeded at the aerated equalization basin with sludge from the Carolina Plantations WWTP (WQ0033770). High water alarm in the equalization basin did not operate on inspection day. Flow through the plant is averaging 17,000 gpd. On inspection day, the flow was—14,000 gpd. • Flow is being diverted from the equalization basin directly to pre -anoxic tank I, then flow is pumped to the membrane tank where it has two options (1) flow continues through the membrane treatment; or (2) flow can return via gravity to the pre -anoxic I, and pumped back to the membrane tank (making an anoxic -membrane cycle -anoxic). Pre -anoxic tank II and oxic tanks have not been used. • It was observed a thick cake layer on the surface of the pre -anoxic I, membrane, and sludge holding tanks. The WiRO recommends contacting the manufacturer to determine if the cake layer as formed, more particularly on top of the membrane tank, reflects a normal operation. Because of the thickness of the cake layer, mixing in the pre -anoxic tank I was almost imperceptible. Similarly, aeration in the sludge holding tank was not apparent. • Mr. Jarman commented that total phosphorus (TP) concentrations from two sample events were high (TP-7 mg/1- permit limit= 2 mg/1) and that the plan was to start chemical addition (alum) for TP removal. It would be useful to investigate if the cake thick layer (i.e. old sludge?) would be contributing to the high TP. • DO and pH measurements are taken with portable meters. MLSS range is from 6,000-7,000 mg/I. Please check with the manufacturer the ideal range of operation for MLSS, TSS, excess sludge removal. • There are no (current) plans for carbon addition (Micro C). • Sampling points for the effluent (PPI 001) and groundwater lowering system were inspected (the surface water sampling points on Margaret Branch were not visited). The two LIV units for disinfection were in operation. The effluent looked clear and odorless. • High -rate infiltration basin #5 started operation. On inspection day, the staff gauge for freeboard recording had not been installed. Mr. Jarman indicated that the provider requires 2 weeks for delivery. Once the staff gauge is available, levels in the basin must be reshot. • Please provide a map showing the location of the water supply well and the delineation of the review and compliance boundaries. Determine if the water supply well is within the compliance boundary. If so, the well must be abandoned and records (GW-30) submitted to the Wilmington Regional Office. On 09/03/2018, Mr. Stewart provided the approximate location of the well which was used to provide water to the basins. Verification of the location of the well related to the compliance boundary is required since the well must be abandoned, if it is located within the compliance boundary. • Please provide updated calculations for the infiltration capacity of basin #5. The calculation report in our files is from November 2011. Also, provide a schedule of the plans for the evaluation of basins #3 and #4. • WiRO emphasizes to read and familiarize with the permits for the collection system and wastewater treatment plant to ensure compliance. Attachments A, B, and C of the WWTF permit list the sampling points or reporting requirements for the facility (effluent, groundwater lowering system, surface water monitoring at points upstream and downstream on Margaret Branch, and high rate infiltration sites). For clarifications on the interpretation of the permit, location of sampling points, recording requirements, or if non-compliance issues are foreseen, please contact Helen Perez (910 796 7323). • WiRO also emphasizes the need of the operators' training in this new membrane technology for this specific site. WiRO reviewed the O&M plan provided by the WWTP consultant, and noticed that the document is a compilation of printouts from the manufacturers of the many components of the plant. It has a general information section on mmf systems which does not describe the specific operating (i.e. chemical addition, MLSS operating concentration, flow recirculation, etc.) conditions for the Stateside WWTP. The writer requested on an e-mail to Envirolink on 09/26/2019, to provide a narrative describing the operation of this system. The narrative must be tailored to this site. Page 3 of 9 Permit: WQ0035809 Inspection Date: 08/29/2019 Owner - Facility: Old North State Water Company LLC Inspection Type : Compliance Evaluation Reason for Visit: Routine Type Yes No NA NE Activated Sludge Spray, HR ❑ Activated Sludge Drip, LR ❑ Reuse (Quality) ❑ Single Family Spray, LR ❑ Lagoon Spray, LR ❑ Activated Sludge Spray, LR ❑ Recycle/Reuse ❑ Single Family Drip ❑ Infiltration System Treatment Yes No NA NE Are Treatment facilities consistent with those outlined in the current permit? ❑ ❑ ❑ Do all treatment units appear to be operational? (if no, note below.) ❑ ❑ ❑ Comment: This is the facilitv's start-uD inspection. Pre -anoxic tank II and oxic tanks have not been used. The two tanks are in place and can be operational. Flow is being diverted from the equalization basin directly to pre -anoxic tank I. then flow is pumped to the membrane tank where it has two options (1) flow continues through the membrane treatment: or (2) flow can return via gravity to the pre -anoxic I, and pumped back to the membrane tank (making an anoxic -membrane cycle -anoxic). Treatment Influent Pump Station Yes No NA NE Is the pump station free of bypass lines or structures? ❑ ❑ ❑ Is the general housekeeping acceptable? ❑ ❑ ❑ Are all pumps present? ❑ ❑ ❑ Are all pumps operable? ❑ ❑ ❑ Are floats/controls operable? ❑ ❑ ❑ Are audio and visual alarms available? ❑ ❑ ❑ Are audio and visual alarms operational? 0 ❑ ❑ ❑ # Are SCADA/Telemetry alarms required? 0 ❑ ❑ ❑ Are SCADA/Telemetry available? ❑ ❑ ❑ Are SCADA/Telemetry operational? ❑ ❑ ❑ Comment: The influent DumD station was inspected on 07/15 and 08/29. On 07/15. the PS needed cleaning, there was an excess of -grease/solids/debris covering 100% of the water surface. The PS did not have si-gnage for identification, address, and contact phone number in case of emergencies. These deficiencies were resolved. The PS has received adequate maintenance once it started receiving flow. Treatment Flow Measurement -Influent Yes No NA NE Is flowmeter calibrated annually? 0 ❑ ❑ ❑ Page 4 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Reason for Visit: Routine Is flowmeter operating properly? Does flowmeter monitor continuously? Does flowmeter record flow? Does flowmeter appear to monitor accurately? Comment: All flow meters for the facility were calibrated on August 1st 2019 Treatment Flow Measurement -Water Use Records Is water use metered? Are the daily average values properly calculated? Comment: Treatment Flow Measurement -Effluent Is flowmeter calibrated annually? Is flowmeter operating properly? Does flowmeter monitor continuously? Does flowmeter record flow? • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑❑❑■ Yes No NA NE ❑❑■❑ ❑❑■❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Does flowmeter appear to monitor accurately? ❑ ❑ ❑ Comment: There are flow meters for the high rate infiltration basins and -groundwater lowering system. Meters were calibrated in August 2019. Standby Power Yes No NA NE Is automatically activated standby power available? ❑ ❑ ❑ Is generator tested weekly by interrupting primary power source? ❑ ❑ ❑ Is generator operable? ❑ ❑ ❑ Does generator have adequate fuel? ❑ ❑ ❑ Comment 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 Treatment Activated Sludge Yes No NA NE Is the aeration mechanism operable? 0 ❑ ❑ ❑ Is the aeration basin thoroughly mixed? ❑ ❑ ❑ Is the aeration equipment easily accessed? ❑ ❑ ❑ Is Dissolved Oxygen adequate? 0 ❑ ❑ ❑ Are Settleometer results acceptable? ❑ ❑ 0 ❑ Page 5 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Is activated sludge an acceptable color? Reason for Visit: Routine Comment: Bioloaical treatment is Drovided by a membrane bioreactor (MBR) tvoe: "Max Flow Membrane Filtration" (mmf). On inspection day (08/29) it was observed a thick cake laver on the surface of the pre -anoxic I, membrane, and sludge holding tanks. The WiRO recommends contacting the manufacturer to determine if the cake laver as formed, more particularly on top of the membrane tank, reflects a normal operation. Because of the thickness of the cake laver, mixing in the pre -anoxic tank I was almost imperceptible. Similarly, aeration in the sludge holding tank was not apparent. MLSS range has been 6,000-7,000 ma/I. Please check with the manufacturer the ideal range of operation for MLSS, TSS, excess sludge removal. Treatment Clarifiers Yes No NA NE Are the weirs level? ❑ ❑ N ❑ Are the weirs free of solids and algae? ❑ ❑ 0 ❑ Is the scum removal system operational? ❑ ❑ 0 ❑ Is the scum removal system accessible? ❑ ❑ 0 ❑ Is the sludge blanket at an acceptable level? ❑ ❑ 0 ❑ Is the effluent from the clarifier free of excessive solids? ❑ ❑ 0 ❑ Comment: Clarifiers are not required since this is a membrane system. Treatment Return pumps Yes No NA NE Are they in place? 0 ❑ ❑ ❑ Are they operational? 0 ❑ ❑ ❑ Comment: Treatment Filters Yes No NA NE Is the filter media present? ❑ ❑ 0 ❑ Is the filter media the correct size and type? ❑ ❑ 0 ❑ Is the air scour operational? ❑ ❑ 0 ❑ Is the scouring acceptable? ❑ ❑ 0 ❑ Is the clear well free of excessive solids? ❑ ❑ 0 ❑ Is the mud well free of excessive solids and filter media? ❑ ❑ 0 ❑ Does backwashing frequency appear adequate? ❑ ❑ 0 ❑ Comment Treatment Sludge Storage/Treatment Yes No NA NE Is the aeration operational? 0 ❑ ❑ ❑ Is the aeration pattern even? ❑ ❑ ❑ If required, are Sanitary "Ts" present in tankage? 0 ❑ ❑ ❑ Comment: Lewis Farm will handle the sludge from the facilit Page 6 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 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? ❑ ❑ ❑ Is there adequate detention time (-30 minutes)? ❑ ❑0 ❑ Is the system properly maintained? ❑ ❑ ❑ If gas, does the cylinder storage appear safe? ❑ ❑ 0 ❑ Is the fan in the chlorine feed room and storage area operable? ❑ ❑ 0 ❑ Is the chlorinator accessible? ❑ ❑ 0 ❑ If tablets, are tablets present? ❑ ❑ 0 ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Is contact chamber free of sludge, solids, and growth? ❑ ❑ 0 ❑ If UV, are extra UV bulbs available? 0 ❑ ❑ ❑ 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)? ❑ ❑ 0 ❑ If yes, then is there a Risk Management Plan on site? ❑ ❑ ❑ If yes, then what is the EPA twelve digit ID Number? (1000-= _) If yes, then when was the RMP last updated? Comment: Fecal coliform results are not available, since the facility is lust starting operation. Therefore the writer cannot determine if dissinfection is adequate. However, the two required UV units for disinfection were in operation and the effluent looked clear and odorless. Record Keeping Yes No NA NE Is a copy of current permit available? ❑ ❑ ❑ Are monitoring reports present: NDMR? ❑ ❑0 ❑ NDAR? ❑ ❑ ❑ Are flow rates less than of permitted flow? ❑ ❑ ❑ Are flow rates less than of permitted flow? ❑ ❑ ❑ Are application rates adhered to? ❑ ❑ 0 ❑ Is GW monitoring being conducted, if required (GW-59s submitted)? ❑ ❑ 0 ❑ Are all samples analyzed for all required parameters? ❑ ❑ 0 ❑ Are there any 2L GW quality violations? ❑ ❑ 0 ❑ Is GW-59A certification form completed for facility? ❑ ❑ 0 ❑ Is effluent sampled for same parameters as GW? ❑ ❑ ❑ Do effluent concentrations exceed GW standards? ❑ ❑ ❑ Are annual soil reports available? ❑ ❑ 0 ❑ # Are PAN records required? ❑ ❑ 0 ❑ # Did last soil report indicate a need for lime? ❑ ❑ 0 ❑ Page 7 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Reason for Visit: Routine If so, has it been applied? ❑ ❑ 0 ❑ Are operational logs present? ❑ ❑ 0 ❑ Are lab sheets available for review? ❑ ❑ 0 ❑ Do lab sheets support data reported on NDMR? ❑ ❑ 0 ❑ Do lab sheets support data reported on GW-59s? ❑ ❑ 0 ❑ Are Operational and Maintenance records present? ❑ ❑ 0 ❑ Were Operational and Maintenance records complete? ❑ ❑ 0 ❑ Has permittee been free of public complaints in last 12 months? 0 ❑ ❑ ❑ Is a copy of the SOC readily available? ❑ ❑ 0 ❑ No treatment units bypassed since last inspection? ❑ ❑ 0 ❑ Comment: WiRO emphasizes to read and familiarize with the permits for the collection system and wastewater treatment plant to ensure compliance. Attachments A, B, and C of the WWTF permit list the sampling points or reporting requirements for the facility (effluent, -groundwater lowering system, surface water monitoring at points upstream and downstream on Margaret Branch, and high rate infiltration sites). For clarifications on the interpretation of the permit, location of sampling points, recording requirements, or if non-compliance issues are foreseen, please contact Helen Perez (910 796 7323). End Use -Infiltration Yes No NA NE # Is the application High Rate or Low Rate? High Rate Are buffers maintained? EEI ❑ ❑ Are any supply wells within the CB? 0 ❑ ❑ ❑ Are any supply wells within 250' of the CB? 0 ❑ ❑ ❑ 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? ❑ ❑ ❑ Is a usable green area maintained? ❑ ❑ 0 ❑ Is the disposal site acceptable? 0 ❑ ❑ ❑ Is the distribution equipment acceptable? 0 ❑ ❑ ❑ Is the disposal site free of ponding? 0 ❑ ❑ ❑ Is the disposal site free of breakout? 0 ❑ ❑ ❑ Are the disposal sites free of solids, algae, etc.? 0 ❑ ❑ ❑ Do the records show that the fields are properly maintained? 0 ❑ ❑ ❑ Are the disposal sites free of vegetation? 0 ❑ ❑ ❑ Do any surface water features appear to be adversely impacted by GW discharge? 0 ❑ ❑ ❑ No chemicals or rototiller used to eliminate vegetation, solids, algae, etc.? 0 ❑ ❑ ❑ Page 8 of 9 Permit: WQ0035809 Owner - Facility: Old North State Water Company LLC Inspection Date: 08/29/2019 Inspection Type : Compliance Evaluation Reason for Visit: Routine Comment: High -rate infiltration basin #5 started operation. On inspection day, the staff gauge for freeboard recording had not been installed. Once the staff gauge is available, levels in the basin must be reshot. Coastal Requirements Are essential treatment units provided in duplicate? Is an adequately sized aerated equalization basin present? If so, is it operable? If present, are diffusers cleaned regularly? Is the equalization capacity adequate? Comment: This area of Onslow County is not classified as "coastal". Yes No NA NE ❑❑■❑ Page 9 of 9