The city council may, annually after the adoption of the resolution ordering designation of the area of benefit and the establishment of the amount of the facilities benefit assessments as provided in Section 3.120.100 of this chapter and subject to the requirements set forth in Sections 3.120.050 through 3.120.110 of this chapter, cause an adjustment to be made in the facilities benefit assessments established by the resolution. The adjustments may reflect increases or decreases in the actual cost of the public facilities project or if the public facilities project has not yet been constructed, then the estimated cost of the proposed capital improvements as reflected in changes in the scope of the public facilities project or any other indices as the city council may deem appropriate for this purpose. The modifications may also reflect changes in the improvements proposed to be constructed as well as the availability, or lack thereof of other funds with which to construct the capital improvements. (Prior code § 39.01.014)