Where is the
Version 1 June 2018
The story of Woronora River valley and the issues from flooding and acid soils over the years.
The subject line comes from people walking past a stormwater grate waving their hands to get rid of the smell ( rotten egg gas, Sulphur gas ) that they had just taken a mouth full of it.
This comes from a situation in Prices circuit opposite Boomi Place when people walk past and the foul sulphate gas is detected by them and they have to wave their hands in front of their faces trying to get clear air.
It is the result of Sulphur gas coming out of the stormwater drain. It happens due to acid soils on the river shore and having wind blow across it and up the drain. It will come out of the drain and movement of air in the street can have this air rise easy to head level of people walking along the road. It will also happen if acid soils are in the storm water pipe which was the case for a while.
To show the true conditions I need to show it in three parts.
(a) The history of the river.
(b) The true story of ACID SOILS.
(c) The story of 2015 and 2016 floods.
HISTORY of the WORONORA RIVER.
To understand the history of the river is very important in understanding how the environment has changed. This was started after investigation why a large area is called FLOOD PRONE LEVEL where we have not had a major flood for many years. I asked myself WHY!
It is noted that when storms come these days a lot of the rainfall is over the upper reaches of the woronora river. The area now above the Woronora Dam or in its catchment area. You can see this by observation of the Sydney radar during storms. Storms look like coming and they split with one part going over an area just west of Waterfall and the other part north towards Hurstville.
Now to understand historical situation I have to look at periods of time and what we had then.
To do this you need to look at time spans.
There was major Floods. Article in local paper PROPELLER describe it. Massive rise in river level. Many homes were washed off their foundations and sent downstream by the flood waters until they reached the bridge where they were smashed.. This was stated by Al Bradshaw of St Peters who had a weekend place on the river. I knew where Bradshaw lived in the 1950s. and it would have been spared. The house is where a reserve called Prices reserve is now with half of the property where the road is now. River rise of 9 feet in one hour. Was quoted by Ald Bradshaw. Many holiday homes washed away. Much rubbish washed down river. A lot of rubbish left on corner of Prices Avenue and Menai road. For recent people to the area this is now where NUNDAH crescent meet Menai Road at the foot of the hill. Schofields boatshed had quoted 100 tons of rubbish washed up there. I can not get a date but I appears to be around 1925. Ald Bradshaw stated that the flooding happened on a Sunday and he came back on the Monday to find human vultures going through the rubbish to see what they could get. . The dam was built between 1927 and 1941.
After 1940 to1970.
We had floods but not the same as before 1927. New DAM being built.
I know from my very young years seeing floods on the river and notice of rubbish floating down the river. But NOT whole houses. NOT the MASSIVE RISE in river level. Watching from the high level of Prices Avenue where I lived I noticed during these floods trees and rubbish flowing down the river. Some small sheds also were seen.
We had major development on Woronora River with Manilla Place,Boomi Place and Yanco Place. This took soil from the river.
In this development because of how it was done a number of issues were produced which have now given us serious problems.
Natural drainage of the hill behind the development.
This was not understood and some work never done. Council show stormwater pipes which I knew never went in. The council looked and found out they could not find them recently.
It appears they did not understand natural flow in storms. I knew this after growing up leaving on the hill and knowing where the water course was. I also knew that drainage pipes did not go in for homes on the Lower side of the now Prices Circuit. It show on council maps but it never went in. The water during storms just increase the water in the ground in the development area. The ground is under extreme pressure from this. It is one of the issues that made the acid soil problem worse.
A stone wall behind Yanco place was removed sometime around the development time. It has caused problems above. There is drainage issues there which had to be recently addressed. A chance this could also be caused by the way part of BANGOR storm water was done. The Observation needs to be done in heavy rain to see if there is an issue. I suspect there is. I did a check a few days after the 2016 issue and noticed a potential problem. Water going over the cliff into bush and down to Prices Circuit below.
The above all would be from development in
Prices Circuit and the initial development in Bangor
Other developments in Woronora River, Bonnent Bay etc. It appeared Woronora River flowed into Georges river better.
We did have a very heavy rain storm in the early 70Its at night after the development in Prices Circuit was completed. I remember it very well. I had to go to work on call out for PMG/TELECOM AND to Blakehurst exchange. If you I have never driven in such conditions, Oak road at Kirrawee was like a cyclone and cars were broken down everywhere and Blakehurst main intersection was a total mess. The found on arrival the new cable tunnel was full of water and water flowing out the back door. I had to get a fire brigade to pump out the water. I have not seen that level of water since. Since it appears the Georges river flow to the ocean has much improved. Suspect from Airport expansion.
Lesson learnt from above is when water flow is not BLOCKED by any turn it flow is much quicker. Reason why the Georges River still Flood upper of the turns in the river.
Deep water also flow quicker
TRUE STORY of ACID SOILS.
These soils can be a major health hazard if not watched.
The acid soil are no problem if not mixed with water and air.
When mixed with water it produce a mixture which with air flow across can produce SULPHUR GAS a POISON.
A very serious misunderstanding is that it does not only happen around ground level but can rise.
The statement given my most Australian authorities is that Sulphur gas being heavier than air that it will not rise. This can be dismissed with many examples.
(a)People walking past the drain in Prices Circuit smell the gas.
(b) Owners of a house at the end of Boomi Place had it in their garage which is up a slope.
(c)I was standing at my letterbox near the drain and affected by the gas.
(d) Ones in Boomi place noticed it in their bedrooms at night.
(e)Rowers on the river at Dawn noticed it in the mist that forms above the river at times at dawn.
(f) Noticed at 6:30am one morning how this mist perform on reaching a large boat. It went up in a straight line and kept going. At least 4 metres in the air above the water level.
(g) I was admitted to hospital which I found out much later unknown cause. After much testing I found out I had sticky mucus which is fully explainable.
a. The mucus is in the airways from throat to the lungs.
b. Limit of air to lungs result in lack of oxygen to heart.
c. I had a condition of irregular heart beat created.
(h) I was reset a few times and then it got thrown out by the gas each time.
(i) Process in doing the stormwater replacement had major failures.
(j) They did not understand the true story of this issue.
When any work is done in ACID SOIL area the soil MUST be removed from site immediately. This with Boomi Place to river project was not done. A project in the last year at YANCO CLOSE may have had new regulations. It does not help me. Some areas I found since was not fixed by council. The workers working on the job. How have they gone? Sulphur Gas needs very SPECIAL MASK.
The issue at Boomi Place to the river lasted over 8 years for myself. Ones in Boomi Place had issues over 15 years. We had polluted water entering the river at low tide for over 6 months.
I found out information on ACID SOIL from Research engineer working in the rural area of North NSW who told me about the failures of ACID SOIL maps used by councils in built up areas. They do not show a true picture due to development of houses and lawns and gardens.
A western Australian web site that gave me a very important link to a USA government web site NEW YORK that gave information of how Sulphur gas was found there to travel up to a kilometer from the source.
I also found reference to RADS.
With all the information I have seen I cannot see why they do not reopen a famous unsolved double murder. The ABC did cover it in recent years. It was in the LANE COVE National Park.
I have reference information that have helped me.
The story of 2015 and 2016 floods.
It has been found out now that the floods were not from the river but from the sewer.
It was not as Many stated as flooding from the river. Checking of the situation near Boomi Place indicated otherwise. It indicated flooding from the sewer. The water from sewer overflow was higher than the river level. Some low areas may have been affected by the river levels but the issue I will talk about is the flooding from the sewer.
We know the floods in 2015 and 2016 came from issues with the sewer. How long has this been an issue we do not know. We have had minor floods previously but I did not do checks on previous occasions. I and a number of residents approach Sydney water about the issue after these two major issues.
This was after I identified that the flooding was not due to river flooding. The flooding level was above river level. Sydney water immediately came back indicating illegal connections for the problems. After many complaints from residents a meeting was held between residents Sutherland Shire Council and Sydney Water.
Then we had the admission from Sydney water that they did not know the cause.
They displayed maps of the pipes through the whole Menai area.
The area covered is the whole area west of Woronora River and included Alford Point.
(i) We found out that they had no monitors.
(ii) I asked were the north pipe joined to the south pipe at the pumping station.
North pipe took all sewer from north of the Bangor bypass.
South pipe took all sewer from south of the Bangor bypass.
It was this pipe flowed along Prices Circuit to the pumping station near caravan park. This was the pipe that gave problems to residents.
I got an answer from my question that the two pipes were joined before entering the pumping station.
The large pumping station could not cope with the load.
Because of this pressure it flowed back up into Prices Circuit and exited through grates and inspection pits.
Sydney Water undertook the following action.
(i) Sydney water put in monitors to check for high pressure spots.
(ii) Sydney water took on the job to inspect the feed pipes.
What they found was inspection pits broken with lids off and signs where storm water had entered the system.
A massive job was started to repair all the problems found.
It was due to lack of maintenance of the pipes as some were very difficult to get to.
It was noted that the flooding was very acid. I had roses that died from it. I had other plants that loved it.
I had approx 8 inch of flood water in part of my yard. It came from a neighbours sewer grate.
This type of flooding needs to be cleaned up fully as it can produce acid soil problems. The 2015 flood did leave acid soil on the roadway (Prices Circuit.). As I have shown elsewhere acid soils can be a very serious problem.
SUBJECT: H2S Polution PLUS.
Two VIDEOS 1. How H2S Rises
2. Stormwater plus sewer out of street covers in 2015.
This shows how the GAS rise. It also show that when it rise it keeps going straight.
click link for VIDEO of
Latest Information on H2S ( Woronora River ) dated 27th April 2016.
I was in discussion yesterday with a person
( I will not give name or what they were doing was a legal river training sport ) .
I asked the question. Doing what you do you would be on the river before or at dawn.
Next question? Did you ever notice any bad or hard to take smell.
Then followed this reply!
At times on the river at this time of the morning their would be what you would call a mist above
the water level to a level above may be a metre or more.
If you were under this top level the air was very BAD.
If you put yourself above the top it was clear air.
It was noted in a number of spots between the two bridges.
If they were going into areas they could see affected
they would take a deep breath and waited to the other side.
It was not tested but H2S is a strong contender for the gas.
With a wind in the right direction it would flow off the river
on to peoples properties and into houses if windows are open.
At this time of the morning residents can be asleep and breath in the
H2S laden air.
No one in Australia has accepted that this can happen.
Here is proof.
This has happen overseas where i read from a USA government web site of problems near
New York where the gas travelled a distance over land.
This whole situation needs to be understood.
It appears now, there is more than just H2S pollution.
I will show the problems today with;
But have we also got Ross River VIRUS ISSUE!
The way work was done and the present situation does leave the H2S problem in Woronora very suspect
to VIRUS ATTACK by the Ross River virus! It is not the only one.
It has been reported on the web that the Georges River is very suspect to Ross River Virus attack. In reading the information on it, it makes this
area very suspect also. We have the conditions for it. This I am following up on.
It also appears there is more to it.
I will need to put all the facts together and see what I can come up with. Already I know there is issues which
were not not addressed at the time.
This is an issue which I have been involved with for over eight years.
I have had Health issue's which can not be explained by medical staff.
It appears after a lot of searching I may have the solution to the whole problem. But it will need a lot more detailed research
to be done.
I need to do a lot more checking before I release the full details.
At present I can tell you that H2S is produced from acid Sulphate soils when they come into contact with the air and water. It is a very powerful gas which can be FATAL.
( Below link to AID-SULPHATE Issue Prices Circuit. Just double click )
There is a lot of issues which need to be looked at.
The April heavy rain has shown the H2S issues are still around. Major Health issues which just cannot be let go now appear to be very strongly connected with H2S pollution. In NSW H2S Health issues are not shown by Health areas. We are shown H2S issues affecting buildings and farmland but not Health. NSW Health refer you to environmental department of local council.
Information on H2S gas show that it is heavieer than air and only found in drains and pits etc. But experience is that this is NOT TRUE. This plus the fact that it affects breathing is the area I will now follow.
Since APRIL work has been done in Boomi Place and Price's circuit.
Pipes which were NOT LINED have been lined.
Ends of lined pipes have now been resealed. This happen where leakage from subsoil areas was happening.
This only finished a few weeks ago.
Only time will tell if the overall problem is solved. A few other issues need to be looked at very carefully. I will not raise them here at present but they have been raised with Council.
There is still a major issue where the pipe enters the river. A pipe put in to drain the sub ground appears to have washed away soil from behind the wall. This is an issue which will need follow up. It was stated that when the work was to be done that the wall support had to be made so that it was supported. This appears to not have been done. The polution is TOO BAD to venture down to have a close look. The polution on the river base at low tide is very bad. This I have seen and council say
it is normal. This I will follow up on.
I will supply up to date photos very soon.
STORMWATER PIPE Issues with OLD PIPE.
I will explain what was done. Why the original pipe had problems.
Original pipe from Prices Avenue to the river was put in TOO LOW and it finished up being covered at the river end. Result was limited flow to the river of stormwater. Trees too close to pipe cracked the pipe in Boomi Place. Sub Soil being ACID Sulphate caused polution GAS to rise. The issue that started the problem.
Also the original pipe being put in very quickly ( in one day ) it went in the wrong place. It was a 4 foot easement and it was not in the space allocated.
The problem with polution gas from the river did not happen until the pipe was first replaced higher and out of the water at low tide. 14th June 2014
Note : It appears to be less polution at present but only time will tell.
Work has been done in Boomi Place and around Yanco Close.
I will follow up with more Photos shortly. That is it for NOW.