| I. - General Provisions |
| § 3.20.010. Adoption. |
| § 3.20.020. Exemptions from centralized purchasing. |
| § 3.20.030. Estimates of requirements. |
| § 3.20.040. Requisitions. |
| § 3.20.050. Purchase orders—Approval required. |
| § 3.20.060. Purchase orders—Unencumbered funds required. |
| § 3.20.070. Supplies—Inspection and testing. |
| § 3.20.080. Supplies—Surplus or obsolete. |
| II. - Bidding |
| § 3.20.085. Preference for local vendors. |
| § 3.20.090. Required. |
| § 3.20.100. Formal contract procedure—Required when. |
| § 3.20.110. Formal contract procedure—Notice. |
| § 3.20.120. Formal contract procedure—Bidder's security. |
| § 3.20.130. Formal contract procedure—Submission of bids. |
| § 3.20.140. Formal contract procedure—Rejection of bids. |
| § 3.20.150. Formal contract procedure—Ties. |
| § 3.20.160. Formal contract procedure—Contract award. |
| § 3.20.170. Open market procedure—Permitted when. |
| § 3.20.180. Open market procedure—Minimum number of quotations. |
| § 3.20.190. Open market procedure—Solicitation. |
| § 3.20.200. Open market procedure—Submission of quotations. |
| § 3.20.210. Informal bid procedure—Generally. |
| § 3.20.220. Informal bid procedure—Contractor's list. |
| § 3.20.230. Informal bid procedure—Notices inviting informal bids. |
| § 3.20.240. Informal bid procedure—Contents of notices. |
| § 3.20.250. Informal bid procedure—Award of contracts. |
| § 3.20.260. Informal bid procedure—Bids exceeding limit. |