Steve DeBrum believes it’s time to draw the line.The Manteca councilman wants to put in motion discussions that would determine the ultimate eastern and southern city boundaries in a bid to protect agriculture and pursue “smart growth.” The western boundary is now up against Lathrop while French Camp Road has been established as the ultimate city boundary where it would run up against Stockton’s city limits.DeBrum, who has served for 9 ½ years as a Manteca City Council member is seeking re-election Nov. 6. Also running for the two council seats are fellow incumbent Debby Moorhead and challengers Ben Cantu and Sheila Raya.“We need to talk about urban limits because eventually we’re going to run out of dirt,” DeBrum said in reference to projected state and county population growth and the need to feed people.