Water Quality Monitoring Report - Noosa Civic - November 2009-2010 - Eenie Creek Rd NOOSAVILLE · 132002.220285

Page                         6 of 8
Work Order                   EB1003772
Client                        DUKE ENVIRONMENTAL
Project                       DE0923


Brief Method Summaries
The analytical procedures used by the Environmental Division have been developed from established internationally recajnized procedures such as those published by the US EPA, APHA. AS and NEPM. In hrnrtie
developed procedures are employed in the absence of documented standards or by client request. The following report provides beef descriptions of the analytical procedures employed for results reported in the
Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.

Ans"O9! M911106                                                F1171-111-17          Mabfx'        A99thod
Alkalinity by PC Titrator                                     ED037-P               WATER          APHA 21st ed , 2320 B This procedure determines alkalinity by automated measurement (e.g PC Titrate) using
                                                                                                   pH 4.5 for indicating the total alkalinity end-point. This method is compliant with NEPM (1999) Schedule B(3)
                                                                                                   (Appdx. 2)
 Dissolved Metals by ICP-MS - Suite A                         EGO20A-F              WATER          (APHA 21st ed., 3125, USEPA SW846 - 6020, ALS QWI-EN/EGO20): Samples are 0.45 urn filtered prior to
                                                                                                   analysis   The ICPMS technique utilizes a highly efficient argon plasma to ionize selected elements. Ions are
                                                                                                   then passed into a high vacuum mass spectrometer, which separates the analytes based on their distinct mass
                                                                                                   to charge ratios prior to their measurement by a discrete dynode ion detector.
 Dissolved Mercury by FIMS                                     EGO35F               WATER          AS 3550. APHA 21st ed. 3112 Hg - B (Flow-injection (SnC12)(Cold Vapour generation) AAS) Samples are 0.45
                                                                                                   um filtered prior to analysis. FIM-AAS is an automated flameless atomic absorption technique. A
                                                                                                   bromate/bromide reagent is used to oxidise any organic mercury compounds in the filtered sample. The ionic
                                                                                                   mercury is reduced online to atomic mercury vapour by SnC12 which is then purged into a heated quartz cell.
                                                                                                   Quantification is by comparing absorbance against a calibration curve. This method is compliant with NEPM
                                                                                                   (1999) Schedule B(3) (Appdx. 2)
Ammonia as N by Discrete analyser                              EK055G               WATER          APHA 21st ed., 4500-NH3 G Ammonia is determined by direct colorimetry by Discrete Analyser. This method is
                                                                                                   compliant with NEPM (1999) Schedule B(3) (Appdx. 2)
Nitrite as N by Discrete Analyser                              EK057G               WATER          APHA 21st ed., 4500-NO2- B. Nitrite is determined by direct colourimetry by Discrete Analyser. This method is
                                                                                                   compliant with NEPM (1999) Schedule B(3) (Appdx. 2)
 Nitrate as N by Discrete Analyser                             EK058G               WATER          APHA 21st ed., 4500-NO3- F Nitrate is reduced to nitrite by way of a cadmium reduction column followed by
                                                                                                   quantification by Discrete Analyser. Nitrite is determined seperately by direct colourimetry and result for Nitrate
                                                                                                   calculated as the difference between the two results. This method is compliant with NEPM (1999) Schedule B(3)
                                                                                                   (Appdx. 2)

 Nitrite and Nitrate as N (NOx) by Discrete                    EK059G               WATER          APHA 21st ed.. 4500-NO3- F. Combined oxidised Nitrogen (N02+N03) is determined by Cadmium Reduction
Analyser                                                                                           and direct colounmetry by Discrete Analyser. This method is compliant with NEPM (1999) Schedule B(3) (Appdx.
                                                                                                   2)
Total Kjeldahl Nitrogen as N By Discrete                       EK061G               WATER          APHA 21st ed., 4500-Norg D. 25mL water samples are digested using a traditional Kjeldahl digestion followed
Analyser                                                                                           by determination by Discrete Analyser. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)

Total Nitrogen as N (TKN + Nox) By                             EKD62G               WATER          APHA 21st ed., 4500-Norg / 4500-NO3-. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)

Discrete Analyser
Total Phosphorus as P By Discrete                              EK067G               WATER          APHA 21st ed., 4500-P B&F This procedure involves sulphuric acid digestion of a 100mL sample to break

Analyser                                                                                           phosphorus down to orthophosphate. The orthophosphate reacts with ammonium molybdate and antimony
                                                                                                   potassium tartrate to form a complex which is then reduced and its concentration measured at 880nm using
                                                                                                   Discrete Analyser. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)

 Reactive Phosphorus as P-By Discrete                          EK071G               WATER          APHA 21st ed.. 4500-P F Ammonium molybdate and potassium antimonyl tartrate reacts in acid medium with
 Analyser                                                                                          othophosphate to form a heteropoly acid -phosphomolybdic acid - which is reduced to intensely coloured
                                                                                                   molybdenum blue by ascorbic acid. Quantification is by Discrete Analyser. This method is compliant with NEPM
                                                                                                   (1999) Schedule B(3) (Appdx. 2)