(d) All bids for construction work submitted pursuant to this section shall be presented under sealed cover and shall be accompanied by one of the following forms of bidder’s security:

1. (1) Cash.
2. (2) A cashier’s check made payable to the commission.
3. (3) A certified check made payable to the commission.
4. (4) A bidder’s bond executed by an admitted surety insurer, made payable to the commission.

(f) The following provisions apply only to the Los Angeles County Metropolitan Transportation Authority:

1. (1) The contract shall be let to the lowest responsible bidder or, in the authority’s discretion, to the person who submitted a proposal that provides the best value to the commission on the basis of the factors identified in the solicitation when the purchase price of all supplies, equipment, and materials exceeds one hundred fifty thousand dollars ($150,000). “Best value” means the overall combination of quality, price, and other elements of a proposal that, when considered together, provide the greatest overall benefit in response to requirements described in the solicitation documents. The contract shall be let to the lowest responsible bidder when the purchase price of the construction of all facilities exceeds twenty-five thousand dollars ($25,000).
2. (2) The authority shall obtain a minimum of three quotations, either written or oral, that permit prices and terms to be compared whenever the expected expenditure required exceeds three thousand dollars ($3,000), but not one hundred fifty thousand dollars ($150,000).
3. (3) The authority may purchase supplies, equipment, and materials from a public auction sale, including public auctions held via the internet, using the procedures established for all other participants in the public auction.

4. (4) The authority may participate in a procurement agreement involving other public entities that is identified by a procuring public entity or entities as a cooperative procuring agreement from which other public entities may make purchases or enter into contracts, and the authority may procure, and enter into contracts for, items purchased pursuant to that procurement agreement, notwithstanding that the authority may not be the procuring public entity, provided the procurement agreement is awarded or entered into by either of the following:

   1. (A) One or more public entities or an organization of public entities, which may include the authority.
   2. (B) A federal, state, or local public entity.

5. (5)

   1. (A) Notwithstanding any other law requiring the authority to award contracts to the lowest responsible bidder, the authority may, except as to contracts for professional services involving private architectural, landscape architectural, engineering, environmental, land surveying, or construction project management as defined in Sections 4525 and 4529.10 of the Government Code, do any of the following in facilitating contract awards with small business enterprises, medium business enterprises, local small business enterprises, and disabled veteran business enterprises:

      1. (i) Provide for a small business enterprise preference in construction, the construction component of a design-build team, the procurement of goods, or the delivery of services. The preference to a small business enterprise shall be 5 percent of the lowest responsible bidder meeting specifications that provides for small business enterprise participation.
      2. (ii) Provide for a local small business enterprise preference in construction, the construction component of a design-build team, the procurement of goods, or the delivery of services. The preference to a local small business enterprise shall be 5 percent of the lowest responsible bidder meeting specifications that provides for local small business enterprise participation. The authority may also offer the preference to a nonlocal business if the bid includes a 30-percent participation by local small business enterprises.
      3. (iii) Establish a subcontracting participation goal for small business enterprises on contracts financed with nonfederal funds and grant a preference of 5 percent to the lowest responsible bidders who meet the goal.
      4. (iv) Require bidders, before the time bids are opened, to comply with the small business enterprise and disabled veteran business enterprise goals and requirements established by the authority on contracts financed with nonfederal funds.
      5. (v) In awarding contracts to the lowest responsible bidder, award the contract to the lowest responsible bidder meeting the small business enterprise and disabled veteran business enterprise goals.
      6. (vi) Until January 1, 2028, set aside work for competition among certified small business enterprises and award each contract to the lowest responsible bidder whenever the expected expenditure required exceeds five thousand dollars ($5,000) but is less than five million dollars ($5,000,000), as long as price quotations are solicited by the authority from three or more certified small business enterprises.
      7. (vii) Until January 1, 2028, set aside work for competition among medium business enterprises for no more than 20 contracts and award each contract to the lowest responsible bidder whenever the expected expenditure required exceeds five million dollars ($5,000,000) but is less than thirty million dollars ($30,000,000), as long as price quotations are solicited by the authority from three or more medium business enterprises.

   2. (B) If the authority awards contracts pursuant to clause (vi) or (vii) of subparagraph (A), the authority, for purposes of legislative oversight, shall prepare and submit the reports described in this subparagraph to the Legislature regarding contracts awarded pursuant to clauses (vi) and (vii) of subparagraph (A). The reports shall be submitted in compliance with Section 9795 of the Government Code and shall be submitted in accordance with the following:

      1. (i) By December 31, 2023, for contracts issued between January 1, 2019, and December 31, 2023.
      2. (ii) By December 31, 2026, for contracts issued between January 1, 2019, and December 31, 2026. The report shall note the number of employees working at a medium business enterprise receiving awards pursuant to this section.
   3. (C) A small or medium business enterprise recommended for a contract award through use of a set aside shall be performing a commercially useful function. A small business enterprise shall be presumed to be performing a commercially useful function if it performs and exercises responsibility of at least 30 percent of the total cost of the contract work with its own workforce.
   4. (D) “Small business enterprise” as used in this paragraph, means a business enterprise that is classified as a small business under United States Small Business Administration rules and meets the current small business enterprise size standards found in Part 121 of Title 13 of the Code of Federal Regulations appropriate to the type of work the enterprise seeks to perform. The authority may establish limitations regarding the average annual gross receipts of a small business over the previous three fiscal years and establish limitations regarding the personal net worth of the owner of the small business, exclusive of the value of the owner’s personal residence.
   5. (E) “Local small business enterprise” as used in this paragraph, means a business enterprise that is classified as a small business under United States Small Business Administration rules, meets the current small business enterprise size standards found in Part 121 of Title 13 of the Code of Federal Regulations appropriate to the type of work the enterprise seeks to perform, and is headquartered in the County of Los Angeles.
   6. (F) “Medium business enterprise” as used in this paragraph means a company that is not a subsidiary of another company and that has a maximum of 250 employees and a maximum of two hundred fifty million dollars ($250,000,000) in gross annual receipts averaged over three years.
   7. (G) “Disabled veteran business enterprise” as used in this paragraph has the meaning as defined in Section 999 of the Military and Veterans Code.
   8. (H) “Goal” as used in this paragraph means a numerically expressed objective that bidders are required to achieve.

(g) The following provisions apply only to the San Bernardino County Transportation Authority:

1. (1) The purchase of all supplies, equipment, and materials, when the expenditure required exceeds one hundred thousand dollars ($100,000), shall, by contract, be let to the lowest responsible bidder, or, in the authority’s discretion, to the responsible bidder who submitted a proposal that provides the best value to the authority on the basis of the factors identified in the solicitation. “Best value” means the overall combination of quality, price, and other elements of a proposal that, when considered together, provide the greatest overall benefit in response to the requirements described in the solicitation documents.
2. (2) To the extent practicable, the authority shall obtain a minimum of three quotations, either written or oral, that permit prices and terms to be compared whenever the expected expenditure required for the purchase of supplies, equipment, or materials exceeds five thousand dollars ($5,000), but does not exceed one hundred thousand dollars ($100,000).