Bonus bucks may start flowing again.Atherton Homes is volunteering to pay $1,068,000 to bolster Manteca police and fire staffing plus contribute $712,000 for the municipal general fund for one-time expenditures as part of a development agreement they are proposing to allow them to build 356 single family homes over the next five years in Southeast Manteca.Bonus bucks is the shorthand name given to the money paid per proposed home to assure sewer allocation certainty over multiple years. It was implemented in 1999 and then suspended 35 months ago. The arrangement made it easier for developers to secure financing for multi-year projects under Manteca’s 3.9 percent sewer allocation growth cap.