Ex-LA City Beat writer Alan Mittelstaedt (known as the LA Sniper) might sue the LA Dept. of Water & Power General Manager and CEO David Nahai over a California Public Records Request violation -- Nahai won't give up his personal water bills for his 6,012-square foot Benedict Canyon mansion. Mittelstaedt thinks the bills will show Nahai's lifestyle is opposite the one his department preaches: sustainability and green. "We’re in ongoing discussions with DWP’s attorneys and are hopeful that the bills will be released by the end of the week," the reporter told LAist in an e-mail. If not released by then, Mittelstaedt will sue. UPDATE: Nahai released an audit of his home energy use to the Daily News. He has an average bimonthly electric bill of $414.