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2-4 2.5 Siting Restrictions The Forward Landfill is not located in an area of rapid geologic change or near tidal waters. As discussed in Section 3.4, there is no known Holocene fault within 200 -feet of the landfill footprint. Forward Landfill is located between the North Fork and the South Fork of Littlejohn's Creek. Based on the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Maps (FIRM) for the San Joaquin Valley, the Forward Landfill is located within four FIRM Panels: 0490F; 0495F; 063017; and 0635F. Based on FIRM Maps, the majority of the landfill is located within "Zone X", which are areas determined to be outside the 0.2 percent annual chance being in a floodplain. The area east of Austin Road at the North Fork of South Littlejohn's Creek is labeled as "Zone A0, (Depth 1)", which are areas with flood depths of one to three feet. This information was factored into the North Fork realignment of the South Littlejohn's Creek relocation design. The Forward Landfill is a Class II disposal facility for which the permanent storm water run-off and drainage systems have been designed to accommodate a 1,000 -year, 24-hour storm event. In accordance with 27 CCR, Section 20270, owners/operators of landfills, existing and proposed, are required to demonstrate that a landfill's design and operations will not pose a bird threat to any local airport. In accordance with Subtitle D, Subpart B of 40 Code of Federal Regulations (40 CFR), Part 258.10, owners/operators of existing and proposed landfills are required to demonstrate that a landfill's design will not pose a bird hazard to aircraft. This regulation is applicable to Forward Landfill since that landfill is located within 10,000 feet of an airport runway used by turbojet aircraft or within 5,000 feet of an airport used by piston type aircraft. It should be noted that the Stockton Metropolitan Airport serves both turbojet and piston type aircraft. The airport's turbojet Runway 29R is located within 10,000 feet of the Austin Unit. The Forward Landfill is within the height limit zoning plan contours for the airport (Figure 2). The peak elevation of the deck area for the Forward Landfill is 200 feet above mean sea level (amsl) and from that point, final deck grades slope down to 170 feet amsl in the area of the Austin Unit (see Drawing 3). This grading configuration allows conformance with the height limit zoning plan contours for the Stockton Municipal Airport (see Figure 2). The issue of the airport's proximity to the landfills was addressed in the 1993 Environmental Impact Report (EIR) for the Forward Landfill Expansion (LSA, 1993) and in the 1994 EIR for the Austin Road Landfill Expansion (ESA, 1994). A letter from the Stockton Metropolitan Airport (see Appendix B) stated "Further, in reviewing our landfill inspection records of the last ten (10) years, I find no evidence of any significant problems with bird hazards associated with this landfill". It should be noted that mitigation measures were provided in the EIRs for both the Forward and Austin Road landfills. The Forward Landfill prepared a demonstration (LGL Limited, September 2011) and it has been placed in the operating record and the U.S. EPA has been notified, as required. The Stockton Metropolitan Airport is located approximately one mile west of the facility. The nearest runway of the airport is approximately one mile west of the landfill. From 1990 through 2011, there have been 26 recorded bird strikes associated with the Forward Landfill SWT Engineering Joint Technical Document - April 2014 z:\projects\allied waste\forward\five year permit rvw 2013\jtd-5 yr pr 2013\text\sec 2_final.doc