GENERAL pH AND CHLORINE - NC



Certification # _______

Date: ______________________________ Facility Name: __________________________________________

Analyst: ___________________________ Permit #: _______________________________________________

pH

Reference Method:            (include year for SM methods) Instrument ID: ___________________

|Calibration |Cal Buffer (true value)|Cal Buffer (true value)|Cal Buffer (true value) |*Check Buffer |Comments |

|Time | | |If calibrating with 3 |(true value) | |

| | | |buffers | | |

| |(use of check mark is |(use of check mark is |(use of check mark is |(must document | |

| |acceptable) |acceptable) |acceptable) |obtained value) | |

| | | | | | |

*pH check buffer must read within ( 0.1 pH units of the buffer’s true value.

4 su buffer Lot#/: 7 su buffer Lot#/: 10 su buffer Lot#:

|Sample location |Sample Collection Time( |Sample Analysis |pH Result |►Post-analysis Buffer |Comments/Data Qualifiers |

| | |Time( | |Check value | |

| | | | | | |

| | | | | | |

| | | | | | |

(If sample is measured directly in the stream and/or on site, one time may be recorded for collection and analysis with the notation that they are measured in situ or at the immediately at the sample site.

► Post analysis buffer check is required when performing analyses at multiple sampling locations and must be within ± 0.1 units of the buffer’s true value

All pH values in pH units (i.e., s.u.). Record all data to the nearest 0.01 s.u. and report to the nearest 0.1 s.u.

Total Residual Chlorine (TRC)

Reference Method:            (include year for SM methods) Instrument ID: ___________________

|Daily Check |Post-analysis |Time check |Sample |Sample |Sample |TRC Result |Comments/Data Qualifiers |

|Standard Result |Check Std. |Standard |Location |Collection |Analysis |µg/L or mg/L | |

|µg/L or mg/L |(when analyzing |Analyzed | |Time |Time |remove one | |

|remove one |at multiple | | | | | | |

| |sites) | | | | | | |

| | | | | | | | |

| | | | | | | | |

| | | | | | | | |

TRC Daily Check Standard true value µg/L or mg/L acceptance range µg/L or mg/L

Check standards must recover within ±10% of the check standard’s true value

Annual Calibration Curve Verification Date: ____________________

Reagent Blank Value: (When applicable. Analyze and document a reagent blank when standards, sample dilutions or PT Samples are prepared)

Conductivity

Reference Method:            (include year for SM methods) Instrument ID: ___________________

|Calibration |Calibration |Optional |Daily Check | |Post-Analysis |Comments |

|Time |Standard True|Calibration |Standard True| |Check Std. | |

| |Value |Standard True|Value | | | |

| | |Value | | | | |

| | | | | | | |

| | | | | | | |

| | | | | | | |

Note: all units are in µmhos/cm or µS (delete one).

Check standards must recover within ±10% of the true value

Calibration Standard Lot#: Verification Standard Lot#:

|Sample Location |Temperature |Sample |(Sample |Result µmhos/cm|Comments/Data Qualifiers |

| |((C) |Collection Time|Analysis Time |or µS (delete | |

| | | | |one) | |

| | | | | | |

| | | | | | |

| | | | | | |

| | | | | | |

(If sample is measured directly in the stream and/or on site, only time analyzed would be recorded, with a note that they are measured in situ or immediately

ATC annual check date:

Dissolved Oxygen (DO)

Reference Method:           (include year for SM methods) Instrument ID: ___________________

|Calibration/ |Calibration |Calibration |Meter reading |(Post-analysis calibration |Comments |

|Verification |variable |Variable |or % |verification (when necessary) | |

|Time |(elevation, |(elevation, |efficiency | | |

| |temperature, |temperature, |after | | |

| |barometric |barometric |calibration | | |

| |pressure, |pressure, | | | |

| |salinity) |salinity) | | | |

| | | | |Theoretical Value mg/L |

| | | | | |

| | | | | |

( When performing analyses at multiple locations, the meter must be recalibrated at each site before analysis or a post-analysis calibration verification must be performed.

* If sample is measured directly in the stream and/or onsite, only time analyzed would be recorded with a note that they are measured in situ or immediately

Temperature

Reference Method:            (include year for SM methods) Instrument ID: _________________________

|Sample Location |Sample |*Sample |Temperature |Comments/Data Qualifiers |

| |Collection Time|Analysis Time |(C | |

| | | | | |

| | | | | |

| | | | | |

* If sample is measured directly in the stream and/or on site, only time analyzed would be recorded, with a note that they are measured in situ or immediately

Annual Verification Date

Settleable Residue

Reference Method:           (include year for SM methods)

|Sample Location |Sample |Sample volume |Sample |45 min. stir|End time |Result ml/L/hr|Comments/Data Qualifiers |

| |Collection |(ml) |Analysis |time | | | |

| |Time | |Start Time | | | | |

| | | | |(use of | | | |

| | | | |checkmark is| | | |

| | | | |acceptable | | | |

| | | | | | | | |

| | | | | | | | |

| | | | | | | | |

Note: Samples must be gently agitated after 45 minutes and allowed to settle for an additional 15 min.

Field Personnel Notes/Equipment Maintenance

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