As far as environmental sins go, you can file this one in the venial category.
From the washingtonpost.com
No mortal sins, just venial ones, about 139 alleged venial sins, to be exact.
From the philly.com
Oh great just what the world needs, another venial tyrannical islamic state.
From the washingtontimes.com
Four in 10 is venial next to Henry's ratio of nine children with nine women.
From the denverpost.com
By and large, critics have regarded these faults as venial or nonexistent.
From the en.wikipedia.org
The recent London School of Economics imbroglio with Gaddafi was a modestly venial example.
From the guardian.co.uk
Although venial sins are less serious, they are considered a foundation for greater offenses.
From the dallasnews.com
The menues are individual and consist of eating one's venial sins.
From the en.wikipedia.org
Of course, one must remain free from all sin, mortal and venial, while doing all these things.
From the en.wikipedia.org
More examples
Minor: warranting only temporal punishment; "venial sin"
Excusable: easily excused or forgiven; "a venial error"
Pardonable; able to be forgiven; excusable; trifling
Means "easily forgiven": The judge dismissed the venial crimes and focused on the theft of the chocolates.
A pardonable offence, or an unpremeditated one
Not causing spiritual death; said of a sin either not serious in itself or, if serious, not adequately recognized as such or not committed with full consent of one's will.
Theological term for sin that does not cause death to the soul because it is committed either without awareness of its seriousness or without full consent (distinguished from mortal sin).
Someone whose offense is deemed by the judge to be VENIAL may be ordered to perorm community service.