Here's from urbandictionary.com
"hecka:
Word used by young children in NorCal (mostly bay are i.e San Fransisco, oakland, dublin, pleasenton, livermore etc.) before they are old enough to use hella without getting in touble.
Your hecka stupid!
This hecka sucks monkey butt!"
Yeah, I personally dislike the word but honestly do catch myself one rare occasions using it. Mostly when talking to young people.