(1) Any item, or items of the same kind of materials, equipment, or supplies purchased, the estimated cost of which is in excess of $30,000, exclusive of sales tax, shall be by contract. However, a district may make purchases of the same kind of items of materials, equipment, and supplies not exceeding $12,000 in any calendar month without a contract, purchasing any excess thereof over $12,000 by contract.
(2) Any work ordered by a district commission, the estimated cost of which is in excess of $150,000 exclusive of sales tax if more than a single craft or trade is involved with the public works project, or a public works project in excess of $75,500 exclusive of sales tax if only a single craft or trade is involved with the public works project, shall be by contract. However, a district commission may have its own regularly employed personnel perform work which is an accepted industry practice under prudent utility management without a contract. For purposes of this section, "prudent utility management" means performing work with regularly employed personnel utilizing material of a worth not exceeding $300,000 in value without a contract. This limit on the value of material being utilized in work being performed by regularly employed personnel shall not include the value of individual items of equipment. For the purposes of this section, the term "equipment" includes but is not limited to conductor, cabling, wire, pipe, or lines used for electrical, water, fiber optic, or telecommunications.
(3) Before awarding a contract required under subsection (1) or (2) of this section, the commission shall publish a notice once or more in a newspaper of general circulation in the district at least 13 days before the last date upon which bids will be received, inviting sealed proposals for the work or materials. Plans and specifications for the work or materials shall at the time of publication be on file at the office of the district and subject to public inspection. Any published notice ordering work to be performed for the district shall be mailed at the time of publication to any established trade association which files a written request with the district to receive such notices. The commission may, at the same time and as part of the same notice, invite tenders for the work or materials upon plans and specifications to be submitted by the bidders.
(4) As an alternative to the competitive bidding requirements of this section and RCW
54.04.080, a district may let contracts using the small works roster process under RCW
39.04.151 through
39.04.154.
(5) Whenever equipment or materials required by a district are held by a governmental agency and are available for sale but such agency is unwilling to submit a proposal, the commission may ascertain the price of such items and file a statement of such price supported by the sworn affidavit of one member of the commission, and may consider such price as a bid without a deposit or bond.
(6) Pursuant to RCW
39.04.280, the commission may waive the competitive bidding requirements of this section and RCW
54.04.080 if an exemption contained within RCW
39.04.280 applies to the purchase or public work.
(7)(a) A district may procure public works with a unit priced contract under this section, RCW
54.04.080, or
54.04.085 for the purpose of completing anticipated types of work based on hourly rates or unit pricing for one or more categories of work or trades.
(b) For the purposes of this section, unit priced contract means a competitively bid contract in which public works are anticipated on a recurring basis to meet the business or operational needs of a district, under which the contractor agrees to a fixed period indefinite quantity delivery of work, at a defined unit price, for each category of work.
(c) Unit priced contracts must be executed for an initial contract term not to exceed three years, with the district having the option of extending or renewing the unit priced contract for one additional year.
(d) Invitations for unit price bids shall include, for purposes of the bid evaluation, estimated quantities of the anticipated types of work or trades, and specify how the district will issue or release work assignments, work orders, or task authorizations pursuant to a unit priced contract for projects, tasks, or other work based on the hourly rates or unit prices bid by the contractor. Where electrical facility construction or improvement work is anticipated, contractors on a unit priced contract shall comply with the requirements under RCW
54.04.085 (1) through (5). Contracts must be awarded to the lowest responsible bidder as per RCW
39.04.010.
(e) Unit price contractors shall pay prevailing wages for all work that would otherwise be subject to the requirements of chapter
39.12 RCW. Prevailing wages for all work performed pursuant to each work order must be the prevailing wage rates in effect at the beginning date for each contract year. Unit priced contracts must have prevailing wage rates updated annually. Intents and affidavits for prevailing wages paid must be submitted annually for all work completed within the previous 12-month period of the unit priced contract.
(8) For the purposes of this section, "lowest responsible bidder" means a bid that meets the criteria under RCW
39.04.350 and has the lowest bid; provided, that if the district commission issues a written finding that the lowest bidder has delivered a project to the district within the last three years which was late, over budget, or did not meet specifications, and the commission does not find in writing that such bidder has shown how they would improve performance to be likely to meet project specifications then the commission may choose the second lowest bidder whose bid is within five percent of the lowest bid and meets the same criteria as the lowest bidder.