The phrase "less environmental impact" is correct and can be used in written English.
For example, you could write, "By using more efficient machinery, we were able to reduce our environmental impact."
On the other hand, a building that lasts longer may, during its full lifecycle, cause less environmental impact than a building that is made from more environmentally friendly building materials but that can be used only for a shorter period of time.
Adapting existing buildings presents an attractive option too: less resource use, less environmental impact, less investment.
"What has altered is there is less noise and less environmental impact from that facility.
Biogas also has less environmental impact because its production does not require drilling.
Automakers are considering switching from the current refrigerant, a hydrofluorocarbon compound called R-134a, to a less-carbon-intensive refrigerant, R-152a, which has much less environmental impact.
The goal of sustainable consumption is to get people to buy less, or at least to buy in such a way that it has less environmental impact.
The barrage is a player for 2050, as are the newly emerging tidal fence and tidal reef technologies which might have less environmental impact.
"As the E.P.A. recently expressed, waste-to-energy plants throughout the country 'produce 2,800 megawatts of electricity with less environmental impact than almost any other sources of electricity,"' he said.
The WasteLess™ collection follows introduction in 2009 of "a care tag for our planet", which was designed to instruct people on how to clean clothes with less environmental impact.
Ms. Heaviside said that federal environmental officials have praised the process as "a clean, reliable, renewable source of energy" that has "less environmental impact than almost any other source of energy".
Government insiders and aviation experts now believe that the extent of opposition to the Heathrow option from politicians of all parties may tilt the advantage in favour of expanding Gatwick, which would have less environmental impact.
