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

Page                         6of8
Work Order                   EB1014514
Client                       DUKE ENVIRONMENTAL
Project                      DE0923


Brief Method Summaries
The analvti,-A procedures used by the Environmental Division have been developed from established internationally recognized procedures such as those published by the US EPA. APHA, AS and NEW In house
d.-veloped 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 reported in the
Certificate of Analysis. Sources from which ALS methods have been developed are provided within the Method Descriptions.



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 045um 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                          EG020A-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 and
Analyser                                                                                           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 by
Analyser                                                                                           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 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)
 Dissolved Organic Carbon                                       EP002                WATER         APHA 21st ed., 5310 B. This method is compliant with NEPM (1999) Schedule B(3) (Appdx. 2)
TPH - Semrvolatile Fraction                                     EP071                WATER          USEPA SW 846 - 8015A The sample extract is analysed by Capillary GC/FID and quantification is by comparison
                                                                                                   against an established 5 point calibration curve of n-Alkane standards. This method is compliant with NEPM
                                                                                                   (1999) Schedule B(3) (Appdx. 2)