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DETERMINATION OF LEVELS OF FLOOD PROTECTION AND INUNDATION 1 CONCEPTUAL FLOOD PROTECTION PLAN As discussed in the previous section approximately 25%of the existing DPA has been elevated to elevations between 13' and 16', or equal to or 3' above the estimated flood elevation, and as such currently meets the requirements of General Specification B.2.of the General Order for flood protection. However the remainder of the existing DPA and the proposed expansion area would be subject to inundation levels of approximately 1' to 3' in the event of a 100-year storm at their current elevations. A Conceptual Grading and Flood Protection Plan has been prepared and is incorporated in this Analysis as Exhibit D. This Plan includes proposed improvements that would provide adequate flood protection as required by the Order for approximately 75%of the DPA after completion of the proposed expansion. A summary of the proposed improvements is as follows: 1. Construct all proposed structures with finished floor(F.F.) elevations of 14.0'or higher. 2. Construct the proposed silage slab at the northwest corner of the DPA to a finished grade(F.G.) elevation of 14.0' or higher. 3. Raise the existing access road near the center of the DPA, between the southeasterly animal housing structures and the wastewater ponds, to finished grade elevations of 14.0'or higher. 4. Construct the proposed manure stacking pad adjacent to the settling ponds to a finished grade elevation of 14.0' or higher. In a"Frequently Asked Questions"statement issued on June 2, 2010,the Central Valley Region of the California Regional Water Quality Control Board (CVRWQCB) stated that"areas that need to be protected from flooding are typically, in order of importance: lagoons, settling basins, manure storage areas, corrals, and silage storage areas." A copy of this statement is included in this analysis as Exhibit E. As shown on Exhibit D, Conceptual Grading and Flood Protection Plan, all lagoons, settling basins, manure storage areas, and silage storage areas would have adequate flood protection. Portions of some corrals, which are second to last in order of importance as stated by the CVRWQCB, and some existing structures would be subject to inundation levels of approximately 1' to 2'. It should be noted that a portion of the DPA along its west side would be left at elevations below the BFE due to existing limiting factors. Those limiting factors are as follows: 1. The existing bam in the northwest comer of the site cannot be raised in any practical fashion. However the proposed structures to the east and the surrounding area can potentially be elevated above the BFE as shown on Exhibit D. 2. The remaining area along the west side of the DPA which is shown as subject to inundation on is immediately adjacent to Bacchetti Road and several existing structures that will remain. Placement of fill within the public right-of-way of Bacchetti Road will not likely be allowed and any significant fill adjacent to the road right-of-way would prohibit access to the site. This constraint and the constraints of the existing structures in this area make placement of significant amounts of fill impractical, if such placement is at all possible. With construction of the proposed improvements described above and shown conceptually on Exhibit D, a significant majority of the Delta Woods Dairy should have adequate protection from the 100-year flood event. The portions of the site that would not have adequate protection as shown on Exhibit D have limiting factors that make providing said protection impractical. It should also be noted that elevating the DPA as shown on Exhibit D will require significant amounts of engineered fill material. The economic impact of Flood Protection Analysis Proposed Delta Woods Dairy Expansion San Joaquin County.CA