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Home My WebLink About#5112 12-Final INSPECTION REPORT ROUTING SHEET To be attached to all inspection reports in-house only. Laboratory Cert. #: 5112 Laboratory Name: Randleman WWTP Inspection Type: Field Maintenance Inspector Name(s): Jeffrey R. Adams Inspection Date: November 8, 2012 Date Report Completed: November 19, 2012 Date Forwarded to Reviewer: November 19, 2012 Reviewed by: Todd Crawford Date Review Completed: November 19, 2012 Cover Letter to use: Insp. Initial Insp. Reg. Insp. No Finding Insp. CP Corrected Unit Supervisor: Dana Satterwhite Date Received: November 19, 2012 Date Forwarded to Linda: November 20, 2012 Date Mailed: November 20, 2012 _____________________________________________________________________ On-Site Inspection Report LABORATORY NAME: Randleman WWTP NPDES PERMIT #: NC0025445 ADDRESS: 101 Hillary Strret Randleman, NC 27317 CERTIFICATE #: 5112 DATE OF INSPECTION: November 8, 2012 TYPE OF INSPECTION: Field Maintenance AUDITOR(S): Jeffrey R. Adams LOCAL PERSON(S) CONTACTED: Frankie Brewer and Jeff Spainhour I. INTRODUCTION: This laboratory was inspected by a representative of the North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC) program to verify its compliance with the requirements of 15A NCAC 2H .0800 for the analysis of environmental samples. II. GENERAL COMMENTS: The laboratory was clean and well organized. Records were filed in an orderly manner and readily available for review. The laboratory was given a packet containing North Carolina Laboratory Certification approved procedures, quality control requirements and policies during the inspection. Contracted analyses are performed by Research & Analytical Laboratories (Certification #34). The requirements associated with Findings A and B are new policies that have been implemented by our program since the last inspection. III. FINDINGS, REQUIREMENTS, COMMENTS AND RECOMMENDATIONS: Traceability A. Finding: The laboratory needs to increase the documentation of purchased materials and reagents (i.e., pH buffers, Total Residual Chlorine reagents and standards). Requirement: All chemicals, reagents, standards and consumables used by the laboratory must have the following information documented: Date Received, Date Opened (in use), Vendor, Lot Number, and Expiration Date. 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 preparati on, 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 chemicals, reagents, standards and consumables used for a period of five years. Consumable materials such as pH buffers and lots of pre-made standards are included in this requirement. Ref: Quality Assurance Policies for Field Laboratories. Page 2 #5112 Randleman WWTP Proficiency Testing B. Finding: The laboratory is not documenting Proficiency Testing (PT) sample analyses in the same manner as environmental samples (i.e., on a laboratory benchsheet). Requirement: All PT sample analyses must be recorded in the daily analysis records as for any environmental sample. This serves as the permanent laboratory record. Ref: Proficiency Testing Requirements, February 20, 2012, Revision 1.2. Comment: The laboratory only retained a copy of the data reporting form used to submit proficiency testing results to the vendor. Dissolved Oxygen – Standard Methods 4500 O G – 2001 pH – Standard Methods, 4500 H+ B - 2000 Temperature – Standard Methods, 2550 B - 2000 Total Residual Chlorine – Standard Methods, 4500 Cl G - 2000 C. Finding: The laboratory is not documenting the sample site on the benchsheet. Requirement: Data pertinent to each analysis must be maintained for five years. Certified Data must consist of date collected, time collected, sample site, sample collector, and sample analysis time. The field benchsheets must provide a space for the signature or initials of the analyst, and proper units of measure for all analyses. Ref: 15A NCAC 2H .0805 (g) (1). Dissolved Oxygen – Standard Methods, 4500 O G – 2001 D. Finding: The laboratory is not documenting the meter calibration. Requirement: The meter must be calibrated prior to analysis of samples. The meter must be calibrated either by the air calibration method or according to the manufacturer's calibration procedure. The laboratory must document each time that a calibration is performed. Ref: NC WW/GW LC Approved Procedure for the Field Analysis of Dissolved Oxygen. E. Finding: The laboratory is not documenting the calibration time. Requirement: The following criteria must be documented whenever sample analysis is performed : Meter calibration and time(s) of calibration. Ref: NC WW/GW LC Approved Procedure for the Field Analysis of Dissolved Oxygen. Total Residual Chlorine – Standard Methods, 4500 Cl G - 2000 F. Finding: The laboratory is not verifying the gel standard concentration every 12 months. Requirement: Purchased “Gel-type” or sealed liquid ampoule standards may be used for daily calibration verification only. These standards must be verified initially and every 12 months thereafter, with the standard curve. Note: It is only necessary to verify the gel or sealed liquid standard which falls within the concentration range of the curve used to measure sample concentrations. For example, if you are measuring samples against a low range curve, a 200 g/L standard would be verified, and not the 800 g/L standard since the 800 standard would be measured using a high range curve. Ref: NC WW/GW LC Approved Procedure for the Field Analysis of Total Residual Chlorine. Comment: The value of the gel standard obtained at the time of the 5 point verification, will be the “true value” used throughout the year and until a new curve is verified. See the “Standard Solutions” section on page 3 of the NC WW/GW LC Approved Procedure for the Field Analysis of Total Residual Chlorine that was provided during the inspection. Page 3 #5112 Randleman WWTP IV. PAPER TRAIL INVESTIGATION: The paper trail consisted of comparing field testing records and contract lab reports to Discharge Monitoring Reports (DMRs) submitted to the North Carolina Division of Water Quality. Data were reviewed for the Town of Randleman WWTP (NPDES permit #NC0025445) for July, August and September, 2012. The following errors were detected: Date Parameter Location Value on Benchsheet *Contract Data Value on DMR 7/5/12 pH Effluent 6.9 S. U. 7.1 S. U. 7/9/12 pH Effluent 7.0 S. U. 6.9 S. U. 9/10/12 Conductivity Effluent 1060 µmhos/cm 1030 µmhos/cm In order to avoid questions of legality, it is recommended that you contact the appropriate Regional Office for guidance as to whether an amended Discharge Monitoring Report will be required. A copy of this report will be made available to the Regional Office. V. CONCLUSIONS: Correcting the above-cited findings will help this lab to produce quality data and meet certification requirements. The inspector would like to thank the staff for its assistance during the inspection and data review process. Please respond to all findings. Report prepared by: Jeffrey R. Adams Date: November 19, 2012 Report reviewed by: Todd Crawford Date: November 19, 2012