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

Page                          6 of 8
Work Order                    EB1000755
Client                        DUKE ENVIRONMENTAL
Project                       DE0923


Brief Method Summaries
The an.$I,It,'il procedures used by the En: ronmentaI Division have been developed from established internationally recognized procedures such as those published by the US EPA. APHA, AS and NEPM In house
developed procedures are employed in the absence of documented standards or by client request. The following report provides brief descriptions of the analytical procedures employed for results retorted in the
Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.

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 Suspended Solids (High Level)                                 EA025H                WATER          APHA 21st ed., 2540D A gravimetric procedure employed to determine the amount of 'non-filterable' residue in a
                                                                                                    aqueous sample. The prescribed GFC (1.2um) filter is rinsed with deionised water, oven dried and weighed
                                                                                                    prior to analysis.   A well-mixed sample is filtered through a glass fibre filter (1.2um). The residue on the filter
                                                                                                    paper is dried at 104+/-2C . This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)
 Hardness as CaCO3                                              EA065                WATER         APHA 21st ed., 2340 B. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)

 Major Cations - Dissolved                                     ED093F                WATER         APHA 21st ed., 3120; USEPA SW 846 - 6010 The ICPAES technique ionises the 0.45um filtered sample atoms
                                                                                                   emitting a characteristic spectrum This spectrum is then compared against matrix matched standards for
                                                                                                   quantification. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)
 Dissolved Metals by ICP-MS - Suite A                        E G020A-F               WATER          (APHA 21st ed., 3125; USEPA SW846 - 6020, ALS QWI-EN/EGO20): Samples are 0.45 um 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.
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+NO3) is determined by Cadmium Reduction
Analyser                                                                                           and direct colourimetry 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                             EK062G                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 antimony) 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)

 Dissolved Organic Carbon                                       EP002                WATER         APHA 21st ed., 5310 B. This method is compliant with NEPM (1999) Schedule B(3) (Appdx 2)