California Code, Government Code - GOV § 50611

The legislative body may enter into such annual contracts as may be required for performance of the maintenance or may cause any part or parts thereof to be performed or furnished by the local agency and may employ the necessary labor and provide, by purchase order when necessary, the required materials and equipment and shall cause the maintenance to be performed or furnished.

The costs and expenses of all maintenance to be done or furnished by the local agency shall be paid for from the funds of the district or out of any fund which may be provided or advanced by the legislative body for expenditure for such purposes.  The payments so advanced may be reimbursed from the district funds when moneys are available therein.