I think I have already answered this in another post so won't do it again.
The problem is people making legislation who have no idea about what they are legislating against and are just playing popularist pollitics while actually making total pollution far worse.
I had a very public arguement with one of the groups down here who consider themselves to be consummer advocates.
They are working tooth and nail to get all 2 cycle engines banned and ultimately all fuel powered "dirty" lawn care products replaced with nice clean electric ones.
Ultimately the person conceeded ( in private ) that they wer wrong, but the campaign continues ( because it is trendy )
What was calculated,
1) if every house in Sydney ( 400,000 ) of them ran their 2 stroke mowers all day ( full 24 hours ) the amount of pollution was the same as 1 jumbo jet ( 4 engine ) taking off from Mascot airport.
Mascot has 150 take off a day.
2) the embedded pollution in a battery powered mower is greater than the embedded pollution is a petrol powered 2 stroke mower plus 5 years of useage.
3) the embedded pollution in a 4 stroke alloy engined lawn mower is 5 times higher than the cast iron 2 stroke most popular down here but the pollution is only 1.15 times higher on the 2 stroke thus it would take 22 years before their total pollutions ( embedded & running) were equal.
However the modern 4 stroke has a design life of 10 years, an average service life of 15 years while the 3 stroke has a design life of 20 years and an actual service life of near 40 years.
Like a lot of things, if you can see it ( 2 stroke smoke ) it must be bad but if you can not see it ( foundry smoke , mining pollution etc etc ) then it does not exist.
Now if you are really serious about saving the planet then get a campaign up & running about ensuring all products sold in the USA have a long service life and all products sold in the USA meet current USA standards.
You embed almost the same pollution in making a cheap chains saw that will only work for 50 yours as you do making a quality one that lasts for 50 years.
All that stuff you see in the dump = pollution in it's manufacture, transport then disposal.
If we stopped making trash products then we would exceed our carbon abatement goals hands down.
The stuff we buy will be 20% more expensive but last 10 times as long thus saving us a fortune in the long run and we would all be better off, except the owners of Walmart & Lowes who would have to live on a mesley $20,000,000 a year in place of the $ 200,000,000 a year they now make bu killing the planet.