Abatement of the nuisance may, in the discretion of the City Council, be performed by contract awarded by the council on the basis of competitive bids let to the lowest responsible bidder pursuant to Sections 37903, 37904, 37905 and 37935, inclusive, of the Government Code of the state. In such event, the contractor shall keep the account and submit the itemized written report for each separate parcel of land, required by Section 8.12.060. (Ord. 76-4 § 1, 1976; prior code § 13A-7.)