(10) Alleged breach of Section 116(1) of the POEO Act
84Section 116(1) provides:
116 Leaks, spillages and other escapes
(1) If a person wilfully or negligently causes any substance to leak, spill or otherwise escape (whether or not from a container) in a manner that harms or is likely to harm the environment:
(a) the person, and
(b) if the person is not the owner of the substance, the owner,
are each guilty of an offence.
(2) If:
(a) the person in possession of the substance at the time of the leak, spill or other escape, or
(b) the owner of any container from which the substance leaked, spilled or escaped, or
(c) the owner of the land on which the substance or any such container was located at the time of the leak, spill or other escape, or
(d) the occupier of the land on which the substance or any such container was located at the time of the leak, spill or other escape,
wilfully or negligently, in a material respect, caused or contributed to the conditions that gave rise to the commission of the offence under subsection (1), that person, owner or occupier is guilty of an offence.
(3) A person may be proceeded against and convicted of an offence under subsection (2) whether or not a person has been proceeded against or convicted of an offence under subsection (1) in respect of the leak, spill or other escape.
(4) It is a defence in any proceedings against a person for an offence under this section if the person establishes that the leak, spill or other escape was caused with lawful authority.
(5) In this section:
container includes anything used for the purpose of storing, transporting or handling the substance concerned.
owner of a substance includes, in relation to a substance that has leaked, spilled or otherwise escaped, the person who was the owner of the substance immediately before it leaked, spilled or otherwise escaped.
85The applicant submitted that Stockland caused the unlicensed discharge of polluted water from the Site in breach of the POEO Act . He says that Braithwaite acknowledged that heavy rainfall on 22-23 March 2011 caused sediment to escape from the Site (subs par 124, citing Braithwaite's affidavit, pars 32-35). Mr Braithwaite stated (at pars 33-34): "[t]his type of heavy rain event is considered extreme and has the effect of sending sediments from both upstream and downstream properties" , but also noted that "[i]ndustry standards for soil and sediment erosion measures are not designed to contain the magnitude of the rain events experienced".
86The applicant also took the court to an email dated 4 April 2011 from Mr Andrew Heaven, the Senior Subdivision Engineer of Council, to Mr Braithwaite and others, attaching photos and effectively reprimanding Stockland (par 125, citing Exhibit K8 at pp 253-254).
87In his oral submissions, Mr Oshlack took the court to the evidence given during his cross-examination of Clouten, the first respondent's Development Manager for Construction, (T29.04.11, p 89 L42-p90 L26):
Q. Are you aware that or do you know that during, are you aware of the, do you have knowledge of the discharge, the uncontrolled discharge of water following the rain event at the end of March?
A. I'm not aware of, no I'm not aware of uncontrolled discharge.
Q. So you're saying there was a controlled discharge?
A. I'm saying the only discharge from the site outside of the water that is coming in from upstream, they are controlled discharges.
Q. So you're not aware that the Wollongong Council had issued a fine for the sediment fence had collapsed?
A. No I'm aware that, that Wollongong Council issued a fine for some sediment fence, it hadn't collapsed, it was a sediment fence that needed cleaning off after the heavy rainfall.
Q. And water had left that and gone into the creek?
A. No that's not what the fine was for.
Q. That was not what the fine was for?
A. No.
Q. Were you aware that water had gone through that sediment fence?
A. The site is - no I wasn't aware that water had gone through the sediment fence.
Q. You weren't aware of that?
A. No. I'm aware that dirt had slid down onto the sediment fence and the sediment fence had done its job to contain the dirt and the fine was for the contractor actually hadn't removed the soil away from the fence and fixed the fence back up, for about a 20 metre section.
Q. So you don't know about any water discharging from the site following that rain event, you haven't any further knowledge?
A. I know of allegations that have been made that there were discharges, but no I'm not aware that there was a major discharge from the sliding.
88Mr Oshlack then took Clouten to a letter from Mr Greg Adams, Construction Manager of Menai Civil, the company that Stockland contracted to be responsible for the earthworks, to Ms Kelly Macdonald of Cardno Forbes Rigby dated 5 April 2011 ( Exhibit K7 , document 13). In that letter it is stated "[d]ue to the extremely high water level of Hewitts creek entering the site, the construction bund at the end of Hewitts creeks works was breached" . Mr Oshlack questioned Clouten in relation to the contents of that document (T29.04.11, p92, LL9-43):
Q. And the water discharged?
A. A bund is used to slow down water, to slow the speed of water down through the area. We had a rock armour design that actually is the bunded area and that's to slow the water down prior to it leaving the site.
Q. You weren't told that the bund had collapsed?
A. No I wasn't aware till this.
Q. And because it collapsed a whole lot of water that was being held by the bund, held back by the bund discharged into Hewitt's [sic] Creek?
A. Not necessarily.
Q. That's what it says there?
A. No that's, that's not how I interpret that.
Q. Well what does it say then, how do you interpret it?
A. It says the bund at the end of Hewitt's [sic] Creek works was breached.
Q. Was breached?
A. Which means that at the load of the water had opened it up.
Q. Had opened it up?
A. And allowed the water to flow through.
Q. Flow through Hewitt's [sic] Creek?
A. That's correct.
89Clouten further explained (T29.04.11, p92, L50-p93, L5):
... the stormwater management plan shows a bunded rock area at the base of each of the creeks that's used to slow down and dissipate so its used to let the water fill up a little bit then it flows over the top and flows back out to the creek. So if that's breached because of the water that means that the water just isn't slowing down before it dissipating back into the outlet of the creek.
90Mr Oshlack's cross-examination of Davis revealed the following in regard to the alleged discharge of polluted waters from the Site:
(a) at T29.04.11, p55, LL18-27:
Q. Looking at those results would you be able to give an opinion whether it would appear from those results that water discharging from the site downstream is, that from the suspended solids, is a result of the water runoff from the site?
A. I cannot say whether it is a result of runoff from the water and I provide some context to this answer, those results are samples taken of a stream, whether they're measuring water that's discharged from a site or not in I couldn't say and in fact they what they're measuring is they're measuring water in a creek. So my answer has to be a qualified no because I'm not entirely sure what it is that they measured.
and (b) at T29.04.11, p56, LL15-45:
Q. Yeah how can you ensure that there is no adverse affects to adjoining properties upon land resulting from flood or stormwater runoff?
A. You ensure it by having adequate management control methods, a plan, installed devices, engineered controls so forth...
Q. How do you know if the management control system is adequate?
A. Well you would have to, a range of, a range of ways, you'd have to make observations on the site, good monitoring in terms of looking at those controls, seeing if those controls are working. You're talking about, you know, controlling runoff off a site, looking at where that runoff is occurring, attempting to control it. Monitoring in itself is not simple and it's interesting, you know, as an expert you're asking me just to compare numbers, well if you wanted something to read out numbers I'm over qualified for that. It's all about putting together a range of ways of monitoring. A good monitoring plan would identify where the runoff is occurring, if it is occurring, would attempt to monitor the condition of that runoff, you may do so by sampling, that's one of many different ways you can do that. Just looking at this report this report is from water samples taken at various locations down Woodlands Creek. I don't know what the results relate to...
91The applicant further alleges that from September 2010, Stockland diverted runoff from the Site into Woodlands Creek without water testing for heavy metal. The applicant undertook his own testing, "taking water samples at the ingress and egress of Woodlands Creek of the site and downstream in Hewitts and Tramway Creeks" , as well as from Woodlands Creek within the Site. These samples were taken in accordance with Australia and New Zealand Environment and Conservation Council ('ANZECC') Guidelines (par 128).
92The applicant purportedly found high levels of various heavy metal substances on 27 January 2011, 22 February 2011, 23 March 2011 and 4 April 2011 (subs pars 130-133). I will extract the submissions regarding those findings later in this judgment ([174]).