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Home My WebLink AboutWQ0029601_Compliance Evaluation Inspection_20210526DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD ROY COOPER Governor DIONNE DELLI-GATTI Secretary S. DANIEL SMITH Director Scott H Brown Carolina Investments Inc 444 Harris Creek Rd Jacksonville, NC 28540 NORTH CAROLINA Environmental Quality May 26, 2021 SUBJECT: Compliance Inspection Report Southwest Plantation WWTF Non -discharge Permit No. WQ0029601 Onslow County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Southwest Plantation WWTF on 5/21/2021. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in Non -discharge Permit No. WQ0029601. 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. ATTACHMENTS Cc: Upload to Laserfiche E Sincerely, DocuSigned by: vv b tit a, salty G )—Lit4 �E3ABA14AC7DC434... Morella Sanchez -King, Regional Supervisor Water Quality Regional Operations Section Wilmington Regional Office Division of Water Resources, NCDEQ North Carolina Department of Environmental Quality I Division of Water Resources Wilmington Regional Office 1127 Cardinal Drive Extension I Wilmington, North Carolina 28405 910.796,7215 o.n.mm.mwemw�m.�ni u�,r� DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Compliance Inspection Report Permit: WQ0029601 SOC: County: Onslow Region: Wilmington Effective: 08/01/17 Expiration: 07/31/22 Effective: Expiration: Contact Person: Scott H Brown Directions to Facility: System Classifications: SI, WW2, Primary ORC: Charles John Scozzari Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 05/21/2021 Primary Inspector: Bryan Lievre Secondary Inspector(s): Title: Owner : Carolina Investments Inc Facility: Southwest Plantation WWTF 245 SW Plantation Dr Certification: 11190 Jacksonville NC 28540 Entry Time 09:OOAM Exit Time: 11:30AM DocuSigned by: B2r�,an. �irv2� 74249ABED37443E... Reason for Inspection: Routine Permit Inspection Type: Reclaimed Water Facility Status: Compliant Not Compliant Question Areas: ▪ Treatment Flow Measurement -Effluent II Treatment Flow Measurement -Water Use Records ▪ Treatment Filters ▪ Treatment Sludge Storage/Treatment ▪ Treatment Flow Measurement ▪ Standby Power (See attachment summary) Phone: 910-340-1086 Phone: 910-451-7190 Phone: 910-796-7215 Inspection Type: Compliance Evaluation ▪ Treatment Flow Measurement -Influent ▪ Treatment ▪ Record Keeping ▪ Treatment Clarifiers ▪ Treatment Return pumps • • Miscellaneous Questions Treatment Barscreen ▪ Treatment Activated Sludge ▪ Treatment Disinfection ▪ End Use -Reuse Page 1 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Inspection Summary: An inspection of the Southwest Plantation Wastewater Treatment Facility (WWTF) reclaimed water generation and non -conjunctive reclaimed water utilization system, Permit Number WQ0029601, was performed on May 21, 2021 in order to verify compliance with the existing permit. Present during the meeting were Charles ("Sonny") Scozzari, (system contract ORC), Scott Brown (with Carolina Investments, Inc.), David Newsom, PE (with Crystal Coast Engineering, PA), John Pierce, PLS as well as myself (Bryan Lievre) with NCDEQ, DWR. Wastewater for the existing system is generated from the surrounding residential properties and associated golf course and pool house amenity buildings. The system has been permitted for the operation of a 250,000 gallon per day (gpd) reclaimed water generation and non -conjunctive utilization system which was proposed in three (3) phases (i.e. Phase I, II and III). An existing 50,000 gpd Phase I reclaimed water generation system includes: • A Flow Control Chamber with: o Manually cleaned bar screen with 1" spacings o Adjustable overflow weirs to enable surge flows to the Flow Equalization Basin (normal flow to Aeration Chamber) • A 15,000 gallon aerated Flow Equalization Basin with: o Two (2) 52 gallon per minute at 14 feet total dynamic head pumps (for flow control to Aeration Basin following surge) o Bubble diffuser system with one (1) 45 cfm at 5 psi PD blower • Two 7,888 gallon aerated Sludge Holding Basins with: o Bubble diffusers o Adjustable swing arm decanting airlift system • Two (2) 25,582 gallon Aeration Basins with: o Bubble diffusers and three (3) 125 cfm at 5 psi PD blowers • Two (2) 4,170 gallon hopper bottom Clarifiers with: o Adjustable effluent weirs o Adjustable skimmer units with airlift removal o Return and waste activated sludge (RAS/WAS) pumps with airlift removal • Tertiary Treatment unit with: o 3,145 gallon wastewater chamber (aka mudwell) with two (2) 40 gpm at 16' TDH submersible pumps o Dual media filter with a surface loading rate of 1.0 gallons per minute per square foot (gpm/sqft) and one 27 cfm at 4 psi PD blower (for air scour prior to backwashing) o 3,030 gallon clearwell with two (2) 270 gpm at 17' TDH submersible backwash pumps and an effluent flowmeter o A 1,600 gallon post aeration chamber with: - UV disinfection unit with 24 lamps — Dual 100 gpm pumps • A 258,3657 gallon synthetically -lined five day upset pond with a dual -pump sump tank • A turbidimeter, a rain sensor, telemetry and a permanent auxiliary power source. It should be noted that the system has been constructed so that any combination of the four PD blowers can be used for airlift. The existing 50,000 gpd Phase I non -conjunctive reclaimed water utilization system consists of: o A 2.5 MG main reclaimed water storage pond o A pump station with two 450 gpm irrigation pumps o Approximately 50.32 acres of spray irrigation area (for golf course Holes 1 through 10) Permitted, but not installed are two additional 100,000 gpd reclaimed water generation systems for Phases II and III. Both Phase II and III were proposed similar to Phase I, except with larger tanks to accommodate additional flow. Also permitted and not installed are Phase II and III non -conjunctive reclaimed water utilization systems, which were both designed for 100,000 gpd and included three additional storage ponds, transfer pumps and spray irrigation areas. Prior to completing the inspection of the wastewater facilities, a discussion ensued regarding requirements for approval of an additional 15 simplex pump stations within Permit Application WQ0030918 MOD. Page 2 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Since the last inspection, performed on 8/2/2019, there was a violation for an exceedance of daily turbidity limit of 10 NTU at 14.7 NTU. No actions were taken due to the single occurrence of this issue. Also, an NOV was issued 10/31/2019 for exceeding the monthly average of 5 mg/L for TSS at 7.1 mg/L in August 2019. Mr. Scozzari was extremely knowledgeable of plant operations and was very helpful during the inspection. The facility is compliant with Permit WQ0029601. Please review the comment sections of the inspection report for more details. Page 3 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Type Infiltration System Lagoon Spray, LR Single Family Spray, LR Activated Sludge Spray, LR Activated Sludge Spray, HR Activated Sludge Drip, LR Recycle/Reuse Single Family Drip Reuse (Quality) Treatment Are Treatment facilities consistent with those outlined in the current permit? Do all treatment units appear to be operational? (if no, note below.) Comment: Exisitng permit issued 4/3/2017, became effective 8/1/2017 and expires 7/31/2022. As previously noted,_the facility is monitored by telemetry and although the system has a visual alarm for high levels within the flow equalization chamber, it does not have audible alarms. Yes No NA NE • Treatment Flow Measurement -Influent Is flowmeter calibrated annually? Is flowmeter operating properly? Does flowmeter monitor continuously? Does flowmeter record flow? Does flowmeter appear to monitor accurately? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Yes No NA NE ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Comment: System does not have influent flow meter. Water supply to the area is provided by ONWASA and each residence has it's own meter. 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? Does flowmeter appear to monitor accurately? Comment: Flowmeter was calibrated 8/12/2020 by Delta Systems Environmental. Yes No NA NE • ❑ • ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • Page 4 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Standby Power Is automatically activated standby power available? Is generator tested weekly by interrupting primary power source? Is generator operable? Does generator have adequate fuel? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: System has a diesel powered generator capab;e of operating entire system. The generator automatically operates every Monday for 15-20 mionutes under load. Preventative maintenance is performed on the unit two times a year by others. Treatment Barscreen Is it free of excessive debris? Is disposal of screenings in compliance? Are the bars spaced properly? Is the unit in good condition? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ Comment: As noted within prior inspections, the collection system is a pressure sewer system with individual grinder pumps. The current 1" spacings on the bar screen collects very little debris, but is manually cleaned as needed. 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? • ❑ ❑ ❑ Comment: Aeration basin appeared to be well mixed during the inspection. DO is maintained at 2 - 3 mg/L and MLSS at 2,500 - 2,800 during summer months. Process control parameters analyzed onsite include settleable solids, DO and bug counts. Treatment Clarifiers Are the weirs level? Are the weirs free of solids and algae? Is the scum removal system operational? Is the scum removal system accessible? Is the sludge blanket at an acceptable level? Is the effluent from the clarifier free of excessive solids? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ Comment: Approximately 2 gallons per day of polymer added to clarifier to assist with settling. Effluent appeared clear and odorless. Treatment Return pumps Are they in place? Are they operational? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Page 5 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Comment: Treatment Filters 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? Yes No NA NE • ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Filters contain a fine plastic single size screen with no other media and are backwashed weekly and placed back into operation after 30 minutes to allow for settling. Treatment Sludge Storage/Treatment Is the aeration operational? Is the aeration pattern even? If required, are Sanitary "Ts" present in tankage? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • 000 Comment: Residuals are hauled off -site and disposed of by Triple S approximately three times per year. Records indicate that sludge was recovered in March and April 2021. Treatment Disinfection Is the system working? Do the fecal coliform results indicate proper disinfection? 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? (1000- If yes, then when was the RMP last updated? Comment: Staff indicated that the UV bulbs were recently replaced and spare bulbs have been ordered. Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑•❑ • ❑ ❑ ❑ ❑ ❑•❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑•❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ • ❑ ❑ ❑ ❑ • ❑ Page 6 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine Record Keeping 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? 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑•❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑•❑ ❑ ❑•❑ ❑ ❑•❑ ❑ ❑ • ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑•❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ Comment: All records appeared organized and complete. Sonny Scozzari, ORC is field certified for pH and DO and Envirochem is the contract lab. The ISCO autosampler was off during the inspection, but the thermometer was calbrated 5/14/2021. The Accumet pH meter and YSI DO meter were also calibrated 5/14/21. End Use -Reuse 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page 7 of 8 DocuSign Envelope ID: 688E45DD-C6F9-4ABA-B157-8D515BEF9DFD Permit: WQ0029601 Owner - Facility: Carolina Investments Inc Inspection Date: 05/21/2021 Inspection Type : Compliance Evaluation Reason for Visit: Routine 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? 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? Are GW monitoring wells required? Are GW monitoring wells located properly w/ respect to RB and CB? Are GW monitoring wells properly constructed, including screened interval? • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Comment: The Hach SC200 turbidity meter was calibrated 8/12/2020 by Delta Systems Environmental. The 5-day upset pond had -6.5' of freeboard and the irrigation pond had -3.5' of freeboard. Both ponds appeared well maintained and re -use signs were observed at the irrigation pond. Onslow Water and Sewer Authority (ONWASA) provides potable water to the area. Page 8 of 8