Hon. Alison Xamon questions the Environment portfolio regarding nutrient monitoring in Southern River, specifically concerning total nitrogen and phosphorus levels. The response details the monitoring practices and data availability.

AnsweredQoN 5986Legislative Council
Asked
11 September 2012
Portfolio
Environment

QuestionView source ↗

I refer to Southern River's continuing failure to meet long term total nitrogen and total phosphorous targets. I also refer to the CSIRO's recommendation to monitor nutrient speciation in effective best management practice evaluation, and I ask —
(1) What, if any, monitoring of nutrient species levels are being undertaken within Southern River?
(2) If monitoring is being undertaken, please specify the how the monitoring is being undertaken?
(3) Please table the results from the last three years of any such monitoring?

AnswerView source ↗

Answered
16 October 2012
Responded by
Minister for Mental Health representing the Minister for Environment
Response time
35 days
1)         The following nutrient species are monitored in Southern River: total nitrogen (TN), total phosphorus (TP), total oxidised nitrogen (NOx), nitrogen as ammonia/ammonium (NH3), soluble reactive phosphorus (SRP), dissolved organic nitrogen (DON), and dissolved organic carbon (DOC).
(2)        Monitoring of Southern Riveris undertaken on a fortnightly basis when the drain is flowing. Fully trained staff from the Department of Water perform this monitoring in accordance with a rigorous quality assurance/quality control protocol that was designed specifically for the catchment monitoring program.
(3)        Quarterly reports which outline the results from this monitoring are available on the Swan River Trust website. These reports also provide context by comparing the most recent results with data collected in the previous five years.
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