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demonstrate compliance with the requirements of OAR 660-023-0180(3)(a). ( Exhibit 144 – DOGAMI geologist review of onsite aggregate deposit) (b) The material meets local government standards establishing a lower threshold for significance than subsection (a) of this section; or Neither the City nor the County has established a lower threshold for significance. Therefore, this section does not apply. (c) The aggregate site was on an inventory of significant aggregate sites in an acknowledged plan on September 1, 1996. The expansion area was not on an inventory of significant aggregate sites on September 1, 1996. Therefore, this section does not apply. (d) Notwithstanding subsections (a) and (b) of this section, except for an expansion area of an existing site if the operator of the existing site on March 1, 1996, had an enforceable property interest in the expansion area on that date, an aggregate site is not significant if the criteria in either paragraphs (A) or (B) of this subsection apply: Because the City Council has found that the application does not satisfy sections (a) or (b), findings under section (d) are superfluous. Nonetheless, to provide a complete evaluation of the application, the City provides the finding that the applicant has not shown that the operator of the existing site (Delta Property Company/Delta Sand and Gravel Company) did not have an enforceable property interest in the expansion area on March 1, 1996. See Exhibit 1, original Delta application dated August 12, 2005. (A) More than 35 percent of the proposed mining area consists of soil classified as Class I on Natural Resource and Conservation Service (NRCS) maps on June 11, 2004; or The proposed mining area does not include any Class I soil. See Exhibit 1, original Delta application page 11, and including Exhibit E, EGR document dated June 2005, Evaluation of Aggregate Resources: Delta Sand and Gravel Expansion Area. (B) More than 35 percent of the proposed mining area consists of soil classified as Class II, or of a combination of Class II and Class I or Unique soil, on NRCS maps available on June 11, 2004, unless the average thickness of the aggregate layer within the mining area exceeds . . . 60 feet in . . . Lane count[y]. The applicant’s report shows that more than 35 percent of the proposed expansion mining area consists of Class II soils. See Exhibit 1, original Delta application page 11, and Figure 6 in Exhibit E, EGR document dated June 2005: Evaluation of Aggregate Resources: Delta Sand and Gravel Expansion Area. The EGR report estimates that the average thickness of the aggregate layer in that area is 70.5 feet; however, DOGAMI evaluation observed only 51.5 feet depth (see Exhibit 144). The Council also finds that EGR’s Exhibit A (e.g. p. 5- 8 and 11-13, Figures 7, 8, and 9, Appendix E well logs and table), and related materials, establish that there are two contiguous, but distinct, layers of sand and gravel, in the expansion area. These layers consist of an upper layer (“younger Ordinance - 13