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HomeMy WebLinkAbout#5571_2022_0303_TS_FINALNC Department of Environmental Quality | Division of Water Resources | Laboratory Certification Branch 4405 Reedy Creek Road | 1623 Mail Service Center | Raleigh, North Carolina 27699-1623 919-733-3908 May 12, 2022 5571 Mr. Ervin Glenn Holland Holland Environmental 408 South Bentonville Road Four Oaks, NC 27524- Subject: North Carolina Wastewater/Groundwater Laboratory Certification Branch (NC WW/GW LCB) Maintenance Inspection Dear Mr. Holland: Enclosed is a report for the inspection performed on March 3, 2022 by Tonja Springer. I apologize for the delay in getting this report to you. Where Finding(s) are cited in this report, a response is required. Within thirty days, please supply this office with a written item for item description of how these Finding(s) were corrected. Please describe the steps taken to prevent recurrence and include an implementation date for each corrective action. If the Finding(s) cited in the enclosed report are not corrected, enforcement actions may be recommended. For Certification maintenance, your laboratory must continue to carry out the requirements set forth in 15A NCAC 02H .0800. A copy of the laboratory’s Certified Parameter List at the time of the audit is attached. This list will reflect any changes made during the audit. Copies of the checklists completed during the inspection may be requested from this office. Thank you for your cooperation during the inspection. If you have questions or need additional information, please contact me at (919) 733- 3908 Ext. 259. Sincerely, Beth Swanson Technical Assistance & Compliance Specialist Division of Water Resources Attachment cc: Tonja Springer, Todd Crawford, #5571 On-Site Inspection Report LABORATORY NAME: Holland Environmental NPDES PERMIT #: NC0026662, NC0038938, NC0072877 ADDRESS: 408 South Bentonville Road Four Oaks, NC 27524 CERTIFICATE #: 5571 DATE OF INSPECTION: March 3, 2022 TYPE OF INSPECTION: Field Commercial Maintenance AUDITOR(S): Tonja Springer LOCAL PERSON(S) CONTACTED: Glenn Holland I. INTRODUCTION: This laboratory was inspected by a representative of the North Carolina Wastewater/Groundwater Laboratory Certification Branch (NC WW/GW LCB) to verify its compliance with the requirements of 15A NCAC 02H .0800 for the analysis of compliance monitoring samples. II. GENERAL COMMENTS: Staff was forthcoming and responded well to suggestions from the auditor. Laboratory documentation, however, was incomplete and inaccurate and additional quality control procedures need to be implemented. The inspector is concerned about the number of transcription errors and record omissions detected during the data review process. Many of the data points recorded on the benchsheet did not compare to the values reported on the Non-Discharge Monitoring Reports (NDMRs). These observations are documented in the Paper Trail Investigation section of this report. All required Proficiency Testing (PT) Samples for the 2022 PT Calendar Year have not yet been analyzed. The laboratory is reminded that results must be received by this office directly from the vendor by September 30, 2022. The laboratory is reminded that any time changes are made to laboratory procedures, QA/SOP document(s) must be updated and relevant staff retrained. Staff must acknowledge that they have read and understand the changes as part of the documented training program. The same requirements apply when changes are made in response to Findings, Recommendations or Comments listed in this report, to ensure the methods are being performed as stated, references to methods are accurate, and the QA and/or SOP document(s) is in agreement with each approved practice, test, analysis, measurement, monitoring procedure or regulatory requirement being used in the laboratory. In some instances, the laboratory may need to create an SOP to document how new functions or policies will be implemented. Revisions to the SOPs, based on the Findings, Comments and Recommendations within this report must be submitted to this office by November 1, 2022. Page 2 #5571 Holland Environmental The laboratory is also reminded that SOPs are required to be reviewed at least every two years and are intended to describe procedures exactly as they are to be performed. Use of the word “should” is not appropriate when describing requirements (e.g., Quality Control (QC) frequency, acceptance criteria, etc.). Evaluate all SOPs for the proper use of the word “should”. Contracted analyses are performed by Environmental Chemists, Inc. (Certification # 94). Approved Procedure documents for the analysis of the facility’s currently certified Field Parameters were provided at the time of the inspection. III. FINDINGS, REQUIREMENTS, COMMENTS AND RECOMMENDATIONS: Documentation A. Finding: Error corrections are not properly performed. Requirement: All documentation errors shall be corrected by drawing a single line through the error so that the original entry remains legible. Entries shall not be obliterated by erasures or markings. Wite-Out®, correction tape, or similar products designed to obliterate documentation are not to be used; instead the correction shall be written adjacent to the error. The correction shall be initialed by the responsible individual and the date of change documented. Ref: 15A NCAC 02H .0805 (g) (1). Comment: Several instances were noted of overwriting and error corrections lacking the date and initials of the individual responsible for the change. B. Finding: The laboratory is not documenting all traceability information for purchased materials, reagents and standards. Requirement: 15A NCAC 02H .0805 (a)(7)(K) and (g)(7) requires laboratories to have a documented system of traceability for the purchase, preparation, and use of all chemicals, reagents, standards, and consumables. That system must include documentation of the following information: Date received, Date Opened (in use), Vendor, Lot Number, and Expiration Date (where specified). A system (e.g., traceable identifiers) must be in place that links standard/reagent preparation information to analytical batches in which the solutions are used. Documentation of solution preparation must include the analyst’s initials, date of preparation, the volume or weight of standard(s) used, the solvent and final volume of the solution. This information as well as the vendor and/or manufacturer, lot number, and expiration date must be retained for primary standards, chemicals, reagents, and materials used for a period of five years. Consumable materials such as pH buffers, lots of pre-made standards and/or media, solids and bacteria filters, etc. are included in this requirement. Ref: NC WW/GW LCB Traceability Documentation Requirements for Chemicals, Reagents, Standards and Consumables Policy. Comment: Buffer lot numbers and expiration dates are documented on the pH benchsheet. There is no traceability information documented on the benchsheet for Total Residual Chlorine (TRC) DPD reagents or Conductivity standards. Comment: Dates received and opened are written on the DPD reagent packets and pH buffer bottles. While this can provide a traceability link to analyses by looking at the dates that the chemicals were in use, that link is lost once the boxes and bottles are discarded. Conductivity standards were not available for review at the time of inspection. Page 3 #5571 Holland Environmental Comment: An example reagent/standard receipt log was given at the time of inspection. C. Finding: All original records are not being maintained for five years. Requirement: All analytical records, including original observations and information necessary to facilitate historical reconstruction of the calculated results, shall be maintained for five years. Ref: 15A NCAC 02H .0805 (g) (1). Comment: The testing data is initially written on a piece of paper, transported back to the laboratory, and transferred to the operator’s logbook and/or DMR. This original paperwork is then discarded. Comment: This Finding applies to the pH, DO and Temperature samples for permit # NC0038938 Johnston County Schools. Comment: Data omission, as noted in the Paper Trail section of this report, can be perceived by third parties as falsification of data. D. Finding: Sample collection and sample analysis time are not consistently documented. Requirement: All laboratories shall use printable laboratory benchsheets. Certified Data shall be traceable to the associated sample analyses and shall consist of: the date and time of sample collection; the time of sample analyses (when required to document a required holding time or when time-critical steps are imposed by the method, a federal regulation, or this Rule). Ref: 15A NCAC 02H .0805 (g) (2) (F) and (H). Requirement: Alternatively, one time may be documented for collection and analysis with the notation that samples are measured in situ or immediately at the sampling site (i.e., immediately following collection at a location as near to the collection point as possible). Ref: NC WW/GW LCB Approved Procedure for the Analysis of Temperature and NC WW/GW LC Approved Procedure for the Analysis of Dissolved Oxygen (DO). Comment: This Finding applies to DO, pH and TRC. Compliance samples are not currently being analyzed for Conductivity and Settleable Residue. Any benchsheets for future compliance sample data must adhere to the same Requirements. The sample analysis time would be documented for PT samples as well. Comment: In data reviewed for permit # NC0026662 Effluent, analyst initials are documented in the space for DO sample collection/analysis time. Comment: In data reviewed for permit # NC0038938 Effluent, sample collection/analysis time is not documented for Temperature, DO and TRC. Comment: In data reviewed for permit # NC0072877, sample collection/analysis time is not documented for Temperature. Only one time is documented for Upstream and Downstream samples without a notation that samples are measured in situ or immediately at the sample site. E. Finding: The laboratory benchsheet is lacking required documentation: the method reference and the proper units of measure. Requirement: All laboratories shall use printable laboratory benchsheets. Certified Data shall be traceable to the associated sample analyses and shall consist of: the method Page 4 #5571 Holland Environmental or Standard Operating Procedure; the proper units of measure. Each item shall be recorded each time samples are analyzed. Analyses shall conform to methodologies found in Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (2) (A) and (L). Comment: The DO method is documented as SM 4500 O G without the reference year. The pH, TRC, Settleable Residue and Conductivity method references include the reference year (i.e., 2011) documented twice. Comment: The PT Sample benchsheet reviewed for June 2021 lacked units of measure for Conductivity and Settleable Residue. F. Finding: The laboratory benchsheet is lacking required documentation for TRC: Daily Check Standard analysis time(s). Requirement: The State Laboratory may develop Approved Procedures for Field Parameters based upon the methods in any of the sources referenced in Parts(a)(1)(A) through (F) of this Rule. Ref: 15A NCAC 02H .0805 (a) (1) (F). Requirement: The following must be documented in indelible ink whenever sample analysis is performed: Daily Check Standard analysis date and time(s). Ref: NC WW/GW LCB Approved Procedure for the Analysis of Total Residual Chlorine (DPD Colorimetric by SM 4500 Cl G-2011). Comment: There is a space to document the Daily Check Standard analysis time, but the time is not being documented. G. Finding: The laboratory benchsheet is lacking required documentation for Dissolved Oxygen: meter calibration time. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref:15A NCAC 02H .0805 (g) (4). Requirement: The following must be documented in indelible ink whenever sample analysis is performed: Meter calibration and meter calibration time(s). Ref: NC WW/GW LCB Approved Procedure for the Analysis of Dissolved Oxygen (DO). H. Finding: The laboratory is not documenting the barometric pressure and salinity values used to calibrate the DO meter. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (4). Requirement: The following must be documented in indelible ink whenever sample analysis is performed: Calibration variables (temperature, elevation or barometric pressure [in mmHg], and salinity). Ref: NC WW/GW LCB Approved Procedure for the Analysis of Dissolved Oxygen (DO). Comment: Per NC WW/GW LC Branch policy, facilities may use the Salinity default value of zero when calibrating the DO meter unless it is known or suspected that the Salinity value of the samples being analyzed is > 9 ppt. In those situations, actual Salinity values must be used. Regardless of which value is used, it must be documented. If the salinity is always the same a blanket statement can be added to the benchsheet. Page 5 #5571 Holland Environmental Comment: Temperature is the only calibration variable documented. I. Finding: The laboratory is not documenting the true value and percent recovery of QC standards on laboratory benchsheets. Requirement: All laboratories shall use printable laboratory benchsheets. Certified Data shall be traceable to the associated sample analyses and shall consist of: the quality control assessments. Each item shall be recorded each time samples are analyzed. Ref: 15A NCAC 02H .0805 (g) (2) (O). Requirement: The following must be documented in indelible ink whenever sample analysis is performed: True value of the calibration verification check standard. Ref: NC WW/GW LCB Approved Procedure for the Analysis of Specific Conductance (Conductivity). Requirement: The following must be documented in indelible ink whenever sample analysis is performed: True value of the Daily Check Standard. Ref: NC WW/GW LC Approved Procedure for the Analysis of Total Residual Chlorine (DPD Colorimetric by SM 4500 Cl G-2011). Comment: This Finding applies to TRC and Conductivity. The true value of QC standards and percent recovery obtained must be documented on the benchsheet and evaluated against established acceptance criteria to demonstrate that the analyst was aware of any out-of-control situation. The corrective actions taken must be documented. Any samples not meeting the acceptance criteria must be reanalyzed, if possible. If this is not possible, the data must be flagged on the laboratory reports as all QC requirements not met. Chlorine, Total Residual – Standard Methods, 4500 Cl G-2011 (Aqueous) Comment: TRC is only reported for permit # NC0038938. Recommendation: The laboratory currently verifies the calibration curve using 10, 20, 50, 100, 300 and 400 µg/L standards. It is recommended that the laboratory verify 20, 40, 50, 200 and 400 µg/L standards. This places emphasis on the portion of the curve between the permit limit and compliance limit, which is the range of most samples. J. Finding: The three values used to assign the true value to the gel-type standard are not documented. Requirement: All analytical records, including original observations and information necessary to facilitate historical reconstruction of the calculated results, shall be maintained for five years. All analytical data and records pertinent to each certified analysis shall be available for inspection upon request. Ref: 15A NCAC 02H .0805 (g) (1). Requirement: To assign a true value to the gel-type or sealed liquid standard: 1. Zero the instrument with the calibration blank. 2. Read and record gel standard values. 3. Repeat steps 1 and 2 at least two more times. 4. Assign the average value as the true value. Ref: NC WW/GW LCB Approved Procedure for the Analysis of Total Residual Chlorine (DPD Colorimetric by SM 4500 Cl G-2011). Page 6 #5571 Holland Environmental K. Finding: The laboratory is not analyzing a Method Blank when using laboratory- prepared standards. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (4). Requirement: Method Blanks would be required when using laboratory-prepared standards [including Proficiency Testing (PT) Samples] and anytime sample dilutions are performed. Ref: NC WW/GW LC Approved Procedure for the Analysis of Total Residual Chlorine (DPD Colorimetric by SM 4500 Cl G-2011). Requirement: The Method Blank is deionized or distilled water from the same source used to prepare the calibration verification standards or the PT Sample, and is analyzed like a sample (i.e., with DPD/buffer added). The concentration of the Method Blank must not exceed 50% of the reporting limit (i.e., the lowest calibration verification standard concentration) or corrective action must be taken. Ref: NC WW/GW LC Approved Procedure for the Analysis of Total Residual Chlorine (DPD Colorimetric by SM 4500 Cl G-2011). Comment: The prepared PT Sample is considered a laboratory-prepared standard. Comment: The “Chlorine Meter Calibration Check & Result Calculation” portion of the Johnston County Schools benchsheet from February 2021 does not appear to have data documented correctly. The Check Standard and Reagent Blank values are identical. Comment: On the 2021 TRC PT Sample benchsheet, the daily check standard result (i.e., 184 µg/L) is documented in the space designated for the reagent blank. Recommendation: The cell designated to document the method blank, per the definition found in the Approved Procedure, is labeled as a reagent blank. It is recommended to change this on the benchsheet to a method blank. Conductivity – Standard Methods, 2510 B-2011 (Aqueous) Comment: The laboratory does not currently analyze compliance samples for Conductivity. Proficiency Testing data was made available for review during the audit. L. Finding: The Automatic Temperature Compensator (ATC) was not verified prior to initial use and every 12 months thereafter. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (4). Requirement: The Automatic Temperature Compensator (ATC) must be verified prior to initial use and annually (i.e., 12 months) thereafter at two temperatures by analyzing a standard or sample at 25°C (i.e., the temperature to which conductivity values are reported) and a temperature(s) that brackets the temperature ranges of the environmental samples routinely analyzed. This may require the analysis of a third temperature reading that is > 25°C. As the temperature increases or decreases, the value of the conductivity standard or sample must be within ±10% of the true value of the standard or ±10% of the value of the sample at 25°C. If not, corrective action must be taken. Ref: NC WW/GW LCB Approved Procedure for the Analysis of Specific Conductance (Conductivity). Page 7 #5571 Holland Environmental Comment: Anticipated temperatures can be obtained from a review of the DMRs from the peak summer and winter months. Historical data should provide a reasonably accurate estimation of ranges that will bracket the expected sample temperatures. Dissolved Oxygen – Standard Methods, 4500 O G-2016 (Aqueous) M. Finding: When analyses are performed at multiple sample sites, the laboratory is not calibrating prior to sample analysis at each sample site or performing a Post-Analysis Calibration Verification. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (4). Requirement: When performing analyses at multiple sample sites, the meter must be calibrated at each sample site prior to analysis or a post-analysis calibration verification must be performed at the end of the run, regardless of meter type. The calculated theoretical DO value must verify the meter reading within ±0.5 mg/L. If the meter verification does not read within ±0.5 mg/L of the theoretical DO, corrective action must be taken. If the meter is not calibrated at each sample site, it is recommended that a mid-day calibration be performed when samples are extended over an extended period of time. Ref: NC WW/GW LCB Approved Procedure for the Analysis of Dissolved Oxygen (DO). Comment: If the meter is recalibrated at each sample location before sample analysis a post-analysis calibration verification would not be required. Comment: This is applicable since the laboratory is analyzing upstream and downstream samples. . pH – Standard Methods, 4500 H+ B-2011 (Aqueous) N. Finding: Values were reported that exceed the method specified accuracy of 0.1 units. Requirement: By careful use of a laboratory pH meter with good electrodes, a precision of ±0.02 unit and an accuracy of ±0.05 unit can be achieved. However, ± 0.1 pH unit represents the limit of accuracy under normal conditions, especially for measurement of water and poorly buffered solutions. For this reason, report pH values to the nearest 0.1 pH unit. Ref: Standard Methods, 4500 H+ B-2011. (6). Comment: pH is being reported to 2 decimal places on the Discharge Monitoring Report (DMR) for Permit # NC0038938 and # NC0072877. Comment: Per PT Vendor instructions, the PT Sample results should be reported to two decimal places, which is an exception to the requirement for compliance samples. Proficiency Testing O. Finding: The laboratory is not documenting the preparation of PT Samples. Requirement: PT Samples received as ampules are diluted according to the Accredited PT Sample Provider’s instructions. It is important to remember to document the preparation of PT Samples in a traceable log or other traceable format. The diluted PT Sample then becomes a routine Compliance Sample and is added to a routine Page 8 #5571 Holland Environmental sample batch for analysis. No documentation is needed for whole volume PT Samples which require no preparation, however the instructions must be maintained. Ref: Proficiency Testing Requirements, February 19, 2020, Revision 5, Section 3.6. Comment: Dating and initialing the instruction sheet for each prepared PT Sample would satisfy the documentation requirement. Temperature – Standard Methods, 2550 B-2010 (Aqueous) Recommendation: It is recommended that Temperature results be reported on the DMR in whole numbers, as stated in the “Precision in Discharge Monitoring Reports” document issued by the Division of Water Resources. P. Finding: The temperature sensor on the pH meter used to obtain reported temperature values has not been checked against a Reference Temperature-Measuring Device every 12 months. Requirement: Laboratory procedures shall comply with Subparagraph (a)(1) of this Rule. Ref: 15A NCAC 02H .0805 (g) (4). Requirement: All compliance temperature-measuring devices without an NIST traceable certificate, or with an expired NIST traceable certificate, must be verified against a Reference Temperature-Measuring Device and the process documented initially and every 12 months. Verification documentation must include the serial number of the device being checked. The serial number, stated accuracy and expiration date of the Reference Temperature-Measuring Device used in the comparison must also be documented. Verification data must be kept on file and be available for inspection for 5 years. (Note: International Organization for Standardization (ISO) 17025 compliant vendors or other Certified laboratories may provide assistance in meeting this requirement. When an ISO compliant vendor provides this assistance, they must provide the serial number, accuracy and calibration date for the Reference Temperature-Measuring Device used for the verification. When a Certified laboratory provides this service, they must provide a copy of the NIST traceable certificate of the Reference Temperature-Measuring Device used for the verification). Ref: NC WW/GW LCB Approved Procedure for the Analysis of Temperature. Comment: The most recent temperature sensor verification was performed January 2021. Reporting Q. Finding: Data qualifiers from the contract laboratory reports are not being transferred to the DMR. Requirement: Each certified Field Laboratory shall be in accordance with Paragraph (e) of this Rule. Ref: 15A NCAC 02H .0805 (g) (17). Requirement: Reported data associated with quality control failures, improper sample collection, holding time exceedances, or improper preservation shall be qualified as such. Ref: 15A NCAC 02H .0805 (e) (5). Comment: See the table in the Paper Trail Investigation section. Page 9 #5571 Holland Environmental IV. PAPER TRAIL INVESTIGATION: The paper trail consisted of comparing original records (e.g., laboratory benchsheets, logbooks, etc.) and contract laboratory reports to DMRs submitted to the North Carolina Division of Water Resources. Data were reviewed for Town of Princeton (NPDES permit # NC0026662) for November and December 2021 and January and February 2022; Johnston County Schools (NPDES permit # NC0038938) for November and December 2021 and January 2022; Town of Newton Grove (NPDES permit # NC0072877) for November 2021 and February 2022. The following errors were noted: Date Parameter Location Value on Benchsheet Value on DMR 12/28/2021 pH Effluent Town of Princeton 6.17 S.U. No value reported 12/29/2021 pH Effluent Town of Princeton 5.62 S.U. No value reported 12/31/2021 pH Effluent Town of Princeton 6.25 S.U. No value reported 12/30/2021 pH Effluent Town of Princeton 6.02 S.U. No value reported 1/1/2022 TSS Influent 2 Town of Princeton *510 mg/L No value reported 1/1/2022 TSS Effluent 2 Town of Princeton *10.00 mg/L No value reported 1/3/2022 DO Effluent Town of Princeton 4.58 mg/L 6.35 mg/L 1/5/2022 pH Effluent Town of Princeton 6.01 S.U. No value reported 1/6/2022 DO Effluent Town of Princeton 9.09 mg/L 9.07 mg/L 1/6/2022 pH Effluent Town of Princeton 6.86 S.U. No value reported 1/7/2022 DO Effluent Town of Princeton 9.62 mg/L 9.52 mg/L 1/7/2022 pH Effluent Town of Princeton 6.65 S.U. No value reported 1/8/2022 TSS Effluent 2 Town of Princeton *12.5 mg/L 12.8 mg/L 1/11/2022 pH Effluent Town of Princeton 6.74 S.U. 6.23 S.U. 1/11/2022 BOD Influent Town of Princeton *49 mg/L 316 mg/L 1/11/2022 TSS Influent Town of Princeton *316 mg/L 49 mg/L 1/12/2022 pH Effluent Town of Princeton 6.51 S.U. No value reported 1/12/2022 Temperature Effluent Town of Princeton 4.7 °C 4.9 °C 1/12/2022 DO Effluent Town of Princeton 14.61 mg/L 11.3 mg/L 1/13/2022 pH Effluent Town of Princeton 6.88 S.U. No value reported Page 10 #5571 Holland Environmental 1/14/2022 pH Effluent Town of Princeton 6.71 S.U. No value reported 1/19/2022 pH Effluent Town of Princeton 6.55 S.U. No value reported 1/20/2022 pH Effluent Town of Princeton 6.93 S.U. No value reported 1/20/2022 TSS Influent Town of Princeton *23.0 mg/L 230 mg/L 1/21/2022 pH Effluent Town of Princeton 6.47 S.U. No value reported 1/24/2022 pH Effluent Town of Princeton 6.70 S.U. No value reported 1/26/2022 pH Effluent Town of Princeton 5.35 S.U. No value reported 1/26/2022 Temperature Upstream Town of Princeton 4.4 °C 4.5 °C 1/27/2022 pH Effluent Town of Princeton 6.24 S.U. No value reported 1/28/2022 pH Effluent Town of Princeton 5.36 S.U. No value reported 11/1/2021 BOD Outfall 001 Johnston County Schools *< 2.0 mg/L No value reported 11/2/2021 Temperature Effluent Johnston County Schools No value on benchsheet 17.1 °C 11/3/2021 Temperature Effluent Johnston County Schools No value on benchsheet 17 °C 11/4/2021 Temperature Effluent Johnston County Schools No value on benchsheet 16.3 °C 11/5/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.8 °C 11/8/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.2 °C 11/9/2021 Temperature Effluent Johnston County Schools No value on benchsheet 14.9 °C 11/10/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.5 °C 11/11/2021 Total Nitrogen Outfall 001 Johnston County Schools *39.6 mg/L No value reported 11/12/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.3 °C 11/14/2021 NO3+NO2 Nitrogen Outfall Johnston County Schools *29.4 mg/L No value reported 11/15/2021 Temperature Effluent Johnston County Schools 15.9 °C 15.2 °C 11/16/2021 Temperature Effluent Johnston County Schools No value on benchsheet 14.9 °C 11/17/2021 Temperature Effluent Johnston County Schools No value on benchsheet 14.6 °C 11/18/2021 Temperature Effluent Johnston County Schools No value on benchsheet 14.3 °C 11/19/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.8 °C Page 11 #5571 Holland Environmental 11/19/2021 Total Nitrogen Effluent Johnston County Schools *31.2 mg/L No value reported 11/22/2021 Temperature Effluent Johnston County Schools No value on benchsheet 16 °C 11/23/2021 Total Nitrogen Effluent Johnston County Schools *30.0 mg/L No value reported 11/24/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.4 °C 11/25/2021 Temperature Effluent Johnston County Schools No value on benchsheet 16 °C 11/26/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.5 °C 11/29/2021 Total Nitrogen Outfall 001 Johnston County Schools * 45.8 mg/L No value reported 11/29/2021 Total Phosphorus Outfall 001 Johnston County Schools *8.05 mg/L No value reported 11/29/2021 Fecal Coliform Outfall 001 Johnston County Schools *<1 MPN/100 mL No value reported 11/30/2021 Temperature Effluent Johnston County Schools No value on benchsheet 15.2 °C 12/9/2021 Total Nitrogen Outfall 001 Johnston County Schools *39.1 mg/L No value reported 12/13/2021 pH Outfall 001 Johnston County Schools 6.8 S.U. 6.9 S.U. 1/6/2022 Total Nitrogen Outfall 001 Johnston County Schools *46.1 mg/L No value reported 1/20/2022 Total Nitrogen Outfall 001 Johnston County Schools *42.3 mg/L No value reported 1/24/2022 Total Nitrogen Outfall 001 Johnston County Schools *36.1 mg/L No value reported 11/13/2021 Temperature Effluent Town of Newton Grove 17.9 °C 16 °C 11/13/2021 pH Effluent Town of Newton Grove 7.7 S.U. 7.4 S.U. 11/13/2021 DO Effluent Town of Newton Grove 8.7 mg/L 7.87 mg/L 11/13/2021 Temperature Upstream Town of Newton Grove 14.4 °C 12.3 °C 11/13/2021 DO Upstream Town of Newton Grove 4.5 mg/L 3.0 mg/L 11/13/2021 Temperature Downstream Town of Newton Grove 13.9 °C 13.4 °C 11/13/2021 DO Downstream Town of Newton Grove 5.2 mg/L 5.8 mg/L 11/20/2021 DO Upstream Town of Newton Grove 3.1 mg/L 3.2 mg/L 11/27/2021 Temperature Downstream Town of Newton Grove 14.9 °C 15.1°C 11/27/2021 DO Downstream Town of Newton Grove 3.8 mg/L 3.7 mg/L 11/29/2021 Temperature Effluent Town of Newton Grove No value on benchsheet 13.1 °C Page 12 #5571 Holland Environmental 11/29/2021 pH Effluent Town of Newton Grove No value on benchsheet 7.6 S.U. 11/29/2021 DO Effluent Town of Newton Grove No value on benchsheet 7.8 mg/L * Contract Laboratory Data Upstream (Town of Princeton) result reported for Temperature (12.5 °C) was reported on December 30, 2021, instead of December 29, 2021. Effluent (Town of Princeton) results for pH (6.23 S.U.) and DO (11.49 mg/L) were reported on January 11, 2022, instead of January 10, 2022. Effluent (Town of Princeton) result for pH (6.19 S.U.) was reported on February 3, 2022 instead of February 2, 2022. Upstream (Town of Princeton) results reported for DO (15.2 mg/L) and Temperature (4.0 °C) were reported on February 3, 2022, instead of February 2, 2022. On the Town of Princeton benchsheet for January 2022, “2021” is written in for January 1, 3, 4, 5, 6, 7 and 8. Comment: The following tables are in reference to Finding Q. Sample Collection Date Parameter Location Contract Lab Report Qualifier 1/11/2022 1/20/2022 TSS Influent Town of Princeton Filtration stopped at 10 min. per method. Result is valid. 2/1/2022 BOD Influent Town of Princeton Sample estimated. Did not meet quality control requirements. Blank = 0.25 mg/L. Above acceptance limit 0.2 mg/L 2/1/2022 BOD Effluent Town of Princeton Sample estimated. Did not meet quality control requirements. Blank = 0.25 mg/L. Above acceptance limit 0.2 mg/L Sample Collection Date Parameter Location Contract Lab Report Qualifier 1/24/2022 2/1/2022 Ammonia Nitrogen Outfall 001 Johnston County Schools Ammonia and TKN are within QC recovery limit. 2/14/2022 BOD Outfall 002 Johnston County Schools Sample estimated. Did not meet quality control requirements. Blank = 0.31 mg/L. Above acceptance limit 0.2 mg/L Page 13 #5571 Holland Environmental To avoid questions of legality and possible monitoring frequency violations, it is recommended that you contact the appropriate Regional Office for guidance as to whether an amended DMR(s) will be required. A copy of this report will be made available to the Regional Office. Comment: Data omission can be perceived by third parties as falsification of data. V. CONCLUSIONS: Correcting the above-cited Findings and implementing the Recommendation(s) will help this laboratory to produce quality data and meet Certification requirements. The inspector would like to thank the staff for their assistance during the inspection and data review process. Please respond to all Findings and include supporting documentation, implementation dates and steps taken to prevent recurrence for each corrective action. Report prepared by: Tonja Springer Date: April 7, 2022 Report reviewed by: Jill Puff Date: April 12, 2022 Certificate Number:5571 Effective Date:1/1/2022 Expiration Date:12/31/2022 Lab Name:Holland Environmental Address:408 South Bentonville Road Four Oaks, NC 27524- North Carolina Wastewater/Groundwater Laboratory Certification Certified Parameters Listing Date of Last Amendment:9/1/2021 The above named laboratory, having duly met the requirements of 15A NCAC 2H.0800, is hereby certified for the measurement of the parameters listed below. CERTIFIED PARAMETERS INORGANIC CHLORINE, TOTAL RESIDUAL SM 4500 Cl G-2011 (Aqueous) CONDUCTIVITY SM 2510 B-2011 (Aqueous) DISSOLVED OXYGEN SM 4500 O G-2016 (Aqueous) pH SM 4500 H+B-2011 (Aqueous) RESIDUE, SETTLEABLE SM 2540 F-2015 (Aqueous) TEMPERATURE SM 2550 B-2010 (Aqueous) This certification requires maintance of an acceptable quality assurance program, use of approved methodology, and satisfactory performance on evaluation samples. Laboratories are subject to civil penalties and/or decertification for infractions as set forth in 15A NCAC 2H.0807.