The Water Tower

The Water Tower
The Water Tower at Dusk

Wednesday, December 24, 2014

Letter to MC July 2014 - Ironmills Steps and Landslip

Something we decided to document with the council earlier this year.
 
Ironmills Steps & Landslip


Gerry and Susan Goldwyre, July 2014.


1. Introduction.

As home-owners of property on Cemetery Road near the site of land slip on council land, we feel we have a duty to provide information and ideas for consideration by Midlothian Council on the possibilities for repair and long term stewardship of the land and associated infra structure at the site of the land slip.

After a meeting with the council officer John Park and Gerry & Susan Goldwyre on July 4th 2014, there is clearly a great deal of shared concern and commonality of approach, to affect a course of action that will be of long term benefit to the community.


2. Ironmills Footbridge.

Whatever the decision regarding the land slip and any repairs to the access steps, it is crucial that Ironmills Footbridge is not affected by any period of non-use and possible dereliction. Mr Park agreed to take back to council an action for the removal of the substantial growth of ivy around the bridge. This will require a submission to Historic Scotland since the bridge is B Listed.

If the bridge is able to be brought back into use it would be appropriate to ensure funding is allocated for the re painting of the bridge and that this cost is not left out of any cost appraisal for repairs to the land slip or steps.


Community groups are willing and able to carry out re painting if this can be permitted under the rigours of health and safety.


3. Eco House RP9

It will be highly likely that council employees and elected representatives will have had their ears burned about the possibility that the house called RP9 built in 2009-2010 is the cause of the land slip. Clearly this is absolute nonsense and there is no need to expand. However, in case of any mis-understanding;

 
·        house RP9 is not built “off the rock” but is built on a series of  hand dug pads. The pads are consist of a layer of pea gravel on which a concrete pad measuring with an adjustable screw-thread section is placed. The pads then accomodate the ring beam to support the house.

·        if house RP9 was the reason for the land slip it would have been quoted in the Ironside Farrar report.

·        if any hysterical community comments are conveyed to elected representatives regarding the house RP9 and the land slip, it would be very much appreciated if the council would consider a means to deal with that, to prevent mal information spreading in the community.


3. Drainage

Over the 27 years of residence on Cemetery Road, Gerry has a wealth of experience in dealing with the street drains and the septic tank serving all properties on Cemetery Rd.


3.1  Septic Tank By Pass

In 1989 on occupancy of the Dalkeith Water Tower, it was apparent that the odour from the septic tank was a known issue in the area. On investigation Gerry determined that the road drains were emptying into the septic tank. Initially not believed to be the case, after dye was poured into the street drain and the septic tank had been cleaned and left open, it was agreed that the road drains did indeed empty into the septic tank. The council then diverted the road drains to the outlet of the septic tank, by-passing the tank. The septic tank was then able to operate as a septic facility, the odour no longer an issue, and the septic tank was placed on a shared programme to have it emptied every 2 or 3 years. The responsible persons are the Goldwyres, Bankfoot Cottage and Midlothian Council.

It is possible that this chnage has been overlooked and may well be an important factor in the land slip. If the road drains previously had the benefit of a large septic tank to contain flood water, what might be the impact of that containment being lost during heavy rain fall? What if the road drains cannot cope with flood water? What if the septic tank outlet pipe diameter is less than that of the road drain pipe?

We are not sure if this drainage status has been considered by the council and we would simply like to make sure that all are aware of the past change to the septic tank and road drains.

3.2 Soggy path 2012

In Dec 2012 the path area at the top of Ironmills Steps was noted to be “soggy” by local Ironmills park resident Niall Young. Niall alerted Susan Goldwyre stating he considered that the problem was drainage from house RP9. Since house RP9 does not utilise that area for a drain, Gerry alerted the council to the problem. The council found………………………………. And this was repaired by ……………………….

Note - (we have no idea about this repair and what was done. The council do not seem to record their own drainage works)

It is worth noting, as another opportunity for potential hysterical community comments, that it is possible that some local residents still believe that the “soggy” ground in late 2012 was caused by house RP9. This particular matter was raised with Mr Park on July 4th 2014 and a copy of the e mail correspondence between Niall Young and Susan Goldwyre at the time of this incident was given to Mr Park (should anyone wish to read it).


3.3  Past Land Slip on Goldwyre Woodland and Drainage Issues

When the local authority sold the woodland to Goldwyre in year 2000 there had been a land slip under the corner of the tennis courts at the East of the property. A woodland management plan noted the area of concern, highlighted the need to let light into the area and that unless water run off was prevented, the area of slip could erode further. Works to broaden the path were carried out by a “bridge” across the narrow point of the slip and access steps in the steep bank below has allowed the area of slip to be more easily viewed. It is very similar to the appearance of the new land slip on the council ground. There is an overhanging cornice laden with tree roots from mature beech trees above. There is a “bowled out” area of land that had been used as a dumping ground and all manner of materials have been removed and the area planted out. The access steps reach a flat area at the bottom of the land slip where a flat area has wooden edges to create a path. It is clear that this area of land slip continues to move because the wooden edges have bellowed out into a curve over a period of around 10 years. It is perhaps not surprising and perhaps helps the council consider whether or not the new area of slip on the council ground will ever stop moving.

Regarding prevention of further water run off. There has been no success with this action because the tennis club has no SUDS system. However, through research and discussion with older residents it is known that a stepped septic pipe (not a tank) was originally positioned on the hill side, that this pipe became so blocked with tree roots that it leaked at each step and eventually the saturated land washed downhill taking the septic pipe with it.

It is perhaps also worth considering the land slip at Lugton Brae. It is understood that a blocked culvert was discovered during the repair to this land and perhaps there is a similar situation at Ironmills.

Therefore, despite IF noting drainage as a low risk option in the assessment of the council land slip, we would beg to differ and ask that the council take our information into consideration.

4. What To Do?

Whatever option is taken by the council, we are of the opinion that;

-          the full and robust repair of a six figure sum may escalate in cost and it may not take into account costs of services and works to the bridge.  

-          the option to put in herringbone land drainage on the slope may well manage water off the slope but is this addressing the root cause of the water saturation? and if water saturation could be reduced, would there be any need for land drainage pipes that would have to be managed to ensure they did not add to problems in the future if they became blocked?

-          the land reform act already allows for access across the slope no matter its condition. If the council continue to block access to no avail, a less is more approach might be better than the use of Heras fencing and signage to alert public of no access. If the hand rail and steps are removed, the public will create their own short cut path. A simple sign warning of land slip and the alternative path direction will then direct the vast majority of walkers away from the slope and allow the fit and able to continue to use the slope and the bridge as an access to and from Ironmills Park. Heras fencing is both ugly, unacceptable in a conservation area, and will continually be damaged to on going cost and angst to the council.

 

 

 

 

 

 

 

 

 

 

 

 

Ironmills Steps Re Opened for Xmas 2014


From Midlothian Council Web Site

Ironmills steps open again

Published on
The steps at Ironmills Park from Cemetery Road in Dalkeith have reopened on a temporary basis.
The steps have been closed and off limits to pedestrians since March 2013 because of landslip problems.
In September the council agreed to spend around £58,000 in total to reinstate the steps and path.
Interim repairs have been carried out and landslip monitored.
Further work is planned for early spring and the steps will have to close again on a temporary basis.
We’d like to thank residents for their patience.

Works to Ironmills Path - Update 17th Dec 2014

Drainage works at the top of Ironmills Steps were completed last week. Here is a brief resume.
 
Further poor workmanship was identified at the pipe from the road drains to the outlet of the septic tank. Basically no joint at all, just a hole cut in the pipe, the other pipe laid against it and a layer of concrete on top to keep it all together. We reckon this pipe work was constructed around 17 years ago when the road drains were diverted from the inlet to the septic tank to the outlet.

This "junction" has probably been leaking since the day it was installed. A comment was made by someone that this was the worst drainage construction seen in all time in the construction industry. It doesn't get much worse.




                                     3 photos showing the intersection of the road drains to the septic outlet....

- and what replaced the above





 

In a fit of reaction to this news about the drainage (along with some very odd Facebook comments from a Jock Cousteau on the "Old Woodburn" site) I sent an e mail to the council. A response the next day offers to document the drainage works and to provide me with a letter stating no impact from our house build or woodland works being a reason for the land slip. Good. So far I have the letter but I'm guessing documenting the drainage works may take a little more time. I don't want to lambast the council any more than necessary but these very shoddy works from the past sit directly above the area where the land slip started.
 
On realising the extent of the poor drainage works, I also decided to contact the British Geological Survey group. The BGS registered the land slip earlier this year after picking it up via this blog site. The BGS had then communicated with the council but had not yet received the Ironside Farrar report. I sent the report to them and they assessed on paper. A useful exercise I think. I conveyed their reply to the council. Basically BGS are agreeing that the wet summer is the most likely cause but that leaking drains can cause land slip. Also agreeing that the tree roots in this situation are helpful rather than a risk. Latter is the case if a full land slip takes place and the shear force of the roots against rock is a risk. This land slip is really land movement and interestingly BGS describe the land slip as a "shallow event".




This week commening Mon 15th Dec, the council team arrive to make a start on repairing the actual steps. There's a red chute taking concrete down to the dog leg of the path where the worst of the slip has impacted.

 

 
 

Then what happened? The septic tank began to stink. The lid had been moved during the drainage works and some soil had got it. It was due to be emptied and it's on a rota. The neighbour was contacted, agreed to go ahead and within the day G had the tank emptied. Now looking to get a better lid and share the cost of that. Its all go.

So....by the end of this week I guess we will have the steps re opened. Hurrah.

Does it end there? I hope not. We need to make some improvements to these steps, betterment.....lighting as well and the hand rail and fencing. I think some works are planned for Spring time and I know that a joint community council action is in the offing to have a meeting with the council. Ideas such as having a notice board at the top of the steps, that would be good, are in the gift of the community councils.

Lots more to come then but right now G and I could not be happier to see the very poor drainage works completely overhauled.


BTW, the drainage tract in the ground and the search for any water pipes?


                                                               land drain 14/12/14



None found and the soil was bone dry. The drain that has been laid will capture nothing but perhaps it future proofs the situation and therefore not such a waste of funds. Its a very large land drain.

Wonder how much money is left from the original 58K for works to the steps? And wonder if there is anything left for the bridge.

Finally
For anyone who might read this blog site after G and I depart this earth, and for Cameron and Susan Manson. He who holds the answer to the drainage holds the answer to it all......