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Home My WebLink AboutNC0088927_Compliance Evaluation Inspection_20170331D ROY COOPER ,,. Governor :., MICHAEL S. REGAN Secretary S. JAY ZIMMERMAN Water Resources Director Environmental Quality March 31, 2017 Mr. Shannon V. Becker Aqua North Carolina, Inc. RE�Ea� 202 MacKenan Court MEQIDWR Cary, NC 27511 APR SUBJECT: Compliance Evaluation Inspection P,81�9�&�5�� 0n Meadow Ridge Subdivision - Water Treatment Plant Discharge NPDES Permit No. NCO088927 Guilford County Dear Mr. Becker: On March 31, 2017, Min Xiao of this office met with Mr. Peter Dealing to perform a Compliance Evaluation Inspection on the NPDES wastewater discharge from the Meadow Ridge WTP. The system was found to be compliant with the NPDES permit. The inspection findings are detailed below and an inspection checklist is attached. I. Permit The current permit became effective March 1, 2017, and will expire at midnight on February 28, 2022. The changes that Fluoride and Zinc parameters were added for monitoring purpose were mentioned during the inspection, but none of the chemicals used in this facility contain Fluoride or Zinc. II. Self -Monitoring Program The DMRs were reviewed for the period February 2016 through January 2017. The facility was only found to be non-compliant with monitoring frequency of Turbidity in August 2016. Flow, pH, and Total Residual Chlorine are measured by the operator. The rest of the parameters (Total Suspended Solids, Turbidity, Total Iron, and Total Manganese) are tested by Water Tech Labs, Inc. III. Facility Site Review The components of the filter backwash system consist of four green sandfilters followed by liquid dechlorination. Calcium thiosulfate solution was used as the dechlorination chemical prior to backwash discharge. The ORC has begun to read actual volume of discharge from the effluent water meter since last November (flow was estimated before) State of North Carolina I Environmental Quality I Water Resources 450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105 Phone: 336-776-98001Internet www.nodenr.gov IV. Operations and Maintenance The backwash process occurs every four days or when 45,000 gallons of well water has been treated, whichever comes first. The water used for backwash is treated well water. The operations and maintenance of this plant were performed excellently by the operator. V. Records/Reports The operator did a good job of keeping his visitation log, results of monitoring parameters, and records of operation process. A comparison of October 2016 DMR with the field records and laboratory results revealed that Flow, pH, Turbidity, TSS, Chlorine, and Iron had been correctly transcribed. The unit of Manganese was reported in mg/L in Water Tech's laboratory results, however, the data of Manganese were directly put into DMR without converting the units from mg/L to ug/L. Please correct it in the following DMRs. VI. Effluent/Receiving Waters The system discharges into the headwaters of a tributary of Kings Creek, class `B" waters of the Roanoke River Basin. Because of the high concentration of iron in well water, the backwash discharge was observed to be yellowish. After several minutes, the discharge became clear. Your efforts to comply with the permit are appreciated. Should you have any questions concerning this letter, please contact Min Xiao or me at (336) 776-9800. Sincerely, C�,�7e Sherri V. Knight, PE Regional Supervisor Water Quality Regional Operations Section Division of Water Resources cc: Peter Dealing (PRDealing@aquaamerica.com) Central Files NPDES Unit WSRO [3 United States Environmental Protection Agency Form Approved. EPA Washington, D.C. 20460 OMB No. 2040-0057 Water Compliance Inspection Report Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code, NPDES yr/mo/day Inspection Type Inspector Fac Type 1 u 2 15 1 LJ 3 I NCO088927 111 12 17/03/30 17 18 ICI 19 1 G 20LJ 211 I I I I I I I I I 11 I I I I I I I I I I I I I I I I I I I I I I I I I I I l I I 16 6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved -- 67 70 I 71 I 72 I NJ 73 I I74 75 80 LJ I l_LLJ Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also Include Entry Time/Date Permit Effective Date POTW name and NPDES permit Number) 01:40PM 17/03/30 17/03/01 Meadow Ridge Subdivision - Well System 7626 Anthony Rd Exit Time/Date permit Expiration Date Kernersville NC 27284 03:45PM 17/03/30 22/02/28 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Peter Ray Dealing/ORC/336-362-2008/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Christopher A Collins,6902 Sandridge Dr Fayetteville NC 28314/Coastal Regional No Supervisor/910-779-0794/ Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenance N Records/Reports Self -Monitoring Program 0 Facility Site Review Effluent/Receiving Waters, Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Min Xiao WSRO WQ//336769800/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers . Date &� �' Y / 9 Id -017 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type 1 31 N00088927 I11 12 17/03/30 17 18 ICI Section D: Summary of Finding/Comments (Attach additional lssheets of narrative and checklists as necessary) Page# Permit: NCO088927 Owner - Facility: Meadow Ridge Subdivision - Well System Inspection Date: 03/30/2017 Inspection Type: Compliance Evaluation Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ 0 ❑ application? Is the facility as described in the permit? ■ ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ 0 ❑ ❑ Is access to the plant site restricted to the general public? ❑ ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? ❑ ❑ ❑ ❑ Comment: The current permit became effective March 1. 2017, and will expire at midnight on February 28 2022 The changes that Fluoride and Zinc parameters were added for monitoring purpose were mentioned during the inspection but none of the chemicals used in this facility contain Fluoride or Zinc. Record Keeping Are records kept and maintained as required by the permit? Is all required information readily available, complete and current? Are all records maintained for 3 years (lab. reg. required 5 years)? Are analytical results consistent with data reported on DMRs? Is the chain -of -custody complete? Dates, times and location of sampling Name of individual performing the sampling Results of analysis and calibration Dates of analysis Name of person performing analyses Transported COCs Are DMRs complete: do they include all permit parameters? Has the facility submitted its annual compliance report to users and DWQ? (if the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified operator on each shift? Is the ORC visitation log available and current? Is the ORC certified at grade equal to or higher than.the facility classification? Is the backup operator certified at one grade less or greater than the facility classification? Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ 0 0 El E ❑ ❑ ❑ ❑ ❑ E ❑ ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ '❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ Page# 3 Permit: N00088927 Owner - Facility: Meadow Ridge Subdivision -Well System Inspection Date: 03/30/2017 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Comment: The operator did a good iob of keeping his visitation loo. results of monitorina Darameters and records of operation process. A comparison of October 2016 DMR with the field records and laboratory results revealed that Flow. pH. Turbidity, TSS. Chlorine, and Iron had been correctly transcribed. The unit of Manganese was reported in mg/L in Water Tech's laboratory results, however, the data of Manganese were directly put into DMR without convertina the units from mg/L to ug/L. Please correct it in the following DMRs. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑ Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ E ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: The backwash process occurs every four days or when 45,000 gallons of well water has been treated, whichever comes first. The operations & maintenance of this plant were performed excellently by the operator. De -chlorination Yes No NA NE Type of system ? Liquid ❑ ❑ Is flow meter calibrated annually? Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ 0 ❑ Is storage appropriate for cylinders? ❑ ❑ ❑ ❑ # Is de -chlorination substance stored away from chlorine containers? M ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ N ❑ Comment: Calcium thiosulfate solution was used as the dechlorination chemical prior to backwash discharge. Are tablet de -chlorinators operational? ❑ ❑ M ❑ Number of tubes in use? Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? ❑ ❑ ❑ Is flow meter calibrated annually? ❑ ❑ E ❑ Is the flow meter operational? ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑, ❑ M ❑ Comment: The facility is actually using a water meter to get the flow of effluent. The operator reads actual volume of effluent for a certain period from the water meter, and divided this number by the time to get flow result. Page# 4 T Permit: NC0088927 Owner - Facility: Meadow Ridge Subdivision - Well System Inspection Date: 03/30/2017 Inspection Type: Compliance Evaluation Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? N ❑ ❑ ❑ Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ Comment: Because of the high concentration of iron in well water, the backwash discharge was observed to be yellowish. After several minutes, the discharge became clear. Page# 5