...The ISA system is the best out there in establishing a minimum level of knowledge and better yet requiring periodic credit accumulation to stay current and increase knowledge or get booted. After that "let the buyer beware"....forget about government handling anything like this in a positive manner....
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...minimum level of knowledge...
I would say that is probably my only beef with the ISA Certified Arborist designation, it established a knowledge base, but unless you voluntarily take the climbers certification as well, there is no need or requirement to demonstrate practical competence, actually applying a tool to a tree, or getting up in a tree to carry out an aerial, visual assessment above ground level.
However having the CA is better than not having it...
I am not ISA certified, I have considered it but with all my UK certifications I reckon I'm somewhere well within their knowledge range AND have practical skills certifications as well so its not a pressing priority.
That's not to say I'll never have a go at it, I am a bit of a procrastinator but I do believe the more the merrier and having a range of certifications from different jurisdictions is a good thing in my books...I will get around to it some time!
To address an earlier query, do the NPTC/City & Guilds certifications and the requirement to hold them to be considered qualified to do tree work in the UK, prevent hacks or 'white van men' from doing tree work??
No...but if they get caught...and it happens, or if there is a safety incident and it is investigated, they are in deep doo doo.
The framework exists for comparison, a framework for determining whether their work is correct or not. It gives a starting point, do you have the minimum qualifications in your possesion to be doing what you do? If you do and your work is ####, then you cannot plead ignorance...you have just shown you do not care and you are an unscrupulous practitioner. If you don't, well...In the Arboriculture Monthly reports I get on email, there are often reports of 'hackers' being caught out misrepresenting themselves and being prosecuted and fined serious amounts of money.
The standards for competence are drawn up by practicing professionals, meetings and practical sessions are held to actually work out in the field whether a proposal is workable in reality. Ive been to some of those meetings and sessions and those guys really hammer it out, agree, disagree, compromise whatever. I's not totally perfect but it does establish an agreed baseline
I work here in a totally unregulated environment, it stings to see landscape companies advertising tree work, seeing that disasterous work and knowing what a customer paid for it...I know of one housing development that paid about $11,000 for three days work by four landscapers in a bucket truck...EVERY tree was cut off level at a 'nice' height, absolutely no regard for species, shape, structure, pruning strategies, whatsoever. But I got turned down to do a rigged removal over a roof because they had spent their buget...so now they have hacked trees and a potential liability over a house.
A landscaper was killed two years ago, 25' up an unsecured ladder, rope tied to a truck, rear handle saw, no rope, no harness, 20' of heavy casurina above him...something went wrong, ladder fell, he fell and 20' of heavy casurina fell on his chest...DEAD...for what?
So do I think that only certified +/or licensed companies or individuals should be allowed to carry out work over 8'....you BET I do!
I say +/or because I have one landscaper pal who has taught himself tree work, he has a background in agronomy and worked his way up the ranks in a good landscape company. I have seen his work and I would be happy for him to work on trees...he's proven it by what he does, no official tree certificates but the proof is in the pudding, and he can tell you why he does what he does. So he may not be certified, but he could be licenced based on demonstrated practical competence and underpinning knowledge.
Ok, I'll stop now...time to watch football and have a