From Recordnet.com:
STOCKTON – The state has granted final designation to the San Joaquin County Enterprise Zone, raising to 656 square miles the area offering tax incentives to employers and manufacturers.
The state granted conditional designation to the zone a year ago, but the final designation boosted the area from 638 square miles, according to San Joaquin County.
“We took in, in essence, another 20 square miles,” Enterprise Zone Manager Fran Aguilera said. “It’s a big deal.”

