For information on invoicing through Ariba, please visit the "Vendor Resources" page for the County of Santa Clara Procurement Department. The City of Santa Clara has adopted a centralized purchasing system to provide support and facilitate procurement activity for supplies, materials, equipment.Vendors must register with Valley Water's PlanetBids system to receive notification of upcoming contracting opportunities and to submit a bid or proposal. Edit, sign, and share california purchase sale agreement online. No need to install software, just go to DocHub, and sign up instantly and for free. A first look at real estate purchase contracts and disclosures. PRDS contracts and CAR contracts. This is a list of Procurement Department's active contracts and identifies which of these will expire within six months from the report date. If you click on the form number in the first column you must print it to fill it out.