AS-BUILT PLANS FOR CAMINO REAL WASH LOMR W.O. 4TRRCA PLAN SHEETS 112, 113, 134-140, 169 AND 170 OF 366 JE Fuller/ Hydrology & Geomorphology, Inc. Jon Fuller, PE, RG, PH, CFM, DWRE Ted Lehman, PE W. Scott Ogden, PE, CFM Robert Lyons, PE, CFM Mike Kellogg, RG, MS, CFM Hari Sundararaghavan, PhD, PE, CFM Brian Iserman, PE, CFM Jeff Despain, PE, CFM Patricia Quinn, PE, RLS Brian Fry, PE, CFM Brian Schalk, PE, CFM Jon Ahern, PE, CFM Cory Helton, EIT, MS Nate Vaughan, EIT Dwight Nield, BS Skyler Witalison, BS Dave Meyer, GIT Annette Griffin, AAS John Wallace, PE Robert Shand, PE Ian Sharp, PE, CFM Chris Rod, PE, CFM Joaquin Solis, PE Cyrus Miller, PE, CFM Marti Craft, MS, CFM December 10, 2008 Mr. Kishore Sirvole Case Reviewer Michael Baker Jr. Inc. 3601 Eisenhower Avenue Alexandria, VA 22304-6425 RE: ELECTRONIC COPY OF FINAL DOCUMENT ORIGINAL SEALED DOCUMENT WITH ROBERT L. SHAND, P.E. (CIVIL), NO. 24026 Case No. 08-09-1560P – Response to 316-AD dated October 31, 2008 Dear Mr. Sirvole: The four issues listed in your letter are addressed in the same order that they were presented. 1. Although the floodplain delineations shown on the two topographic work maps appear to coincide with the alignment of the two referenced floodwalls, containment of flows at either location is not dependent on the walls as is evident by the attached profile plots (Exhibits 1a and 2a), which consolidate as-built information from the various plans, the HEC-RAS models, and the attached cross section plots (Exhibits 1d and 2d). The profile plots were prepared as part of a follow-up investigation that was initiated by your comment. The results of this investigation indicate that the two walls are not containing flood flows at either location; therefore, they are not technically floodwalls. In addition, the walls were not constructed on "levee-like" structures as is evident from the attached aerial photographs (Exhibits 1b and 2b) and ground photographs (Exhibits 1c and 2c). Again, based on the results of this follow-up investigation, which is summarized in the paragraphs that follow, Paragraph 65.10 is not applicable to these two structures. With respect to the River Road or north wall (Exhibit 1), the computed water-surface elevations are below the toe of the wall and below the centerline profile of the slightly elevated River Road embankment. On Exhibit 1a, which is based on the control stationing of the wall, the western tieback portion is located between Station 0+00 and 0+75 (which also corresponds to Station 692+85 of the as-built roadway plans). The eastern tie-back portion is located between Station 4+35 (which also corresponds to Station 696+45 of the as-built roadway plans) and Station 5+42. The segment between Station 0+75 and Station 4+35 parallels River Road. The water-surface profile shown along the western tie-back portion of the wall corresponds to the downstream profile for the West sub-reach. The profile along the eastern tie-back portion and along the River Road portion corresponds to the profiles for the East sub-reach and the Overflow South sub-reach, respectively. All three of these sub-reaches are included in the HEC-RAS project file "CaminoRealUpstream". The computed inletcontrol headwater elevations associated with the two River Road drainage structures, which were modeled using HY-8, are also shown on Exhibit 1a. When the roadway improvements were designed, there was some concern by Castro Engineering that the River Road embankment would be considered a "levee-like" structure. As a result, the north "floodwall" was provided solely to ensure 8400 S. Kyrene Rd., Ste 201 Tempe, Arizona 85284 480-752-2124 (voice) 480-839-2193 (fax) 1 W. Deer Valley Rd., Ste 101 Phoenix, AZ 85027 623-889-0166 (voice) 480-839-2193 (fax) 2160 N. 4th St., Ste 202C Flagstaff, AZ 86004 928-214-0887 (voice) 928-214-0887 (fax) www.jefuller.com 40 E. Helen Street Tucson, Arizona 85705 520-623-3112 (voice) 520-623-3130 (fax) Michael Baker Jr. Inc., LOMR Case No. 08-09-1560P – Response to 316-AD December 10, 2008 Page 2 that at least three feet of freeboard would be provided above the northern edge of the roadway. However, River Road is only elevated approximately two feet above natural ground relative to the downstream side of the roadway, and the two drainage structures discharge flow into two welldefined (i.e., incised) channel sections. Consequently, the water-surface profile on the upstream side of the roadway is not significantly higher than the ground profile on the downstream side. Given the relative low embankment height and the width of the roadway embankment itself, which equals or exceeds 90 feet, embankment stability and/or settlement is not a factor. Therefore, the roadway embankment does not constitute a "levee-like" structure (see Exhibits 1b and 1c). With respect to the western downstream channel wall or west wall (Exhibit 2), the computed watersurface profile and the critical water-surface profile are well below the toe of the wall on both the landward side (i.e., parking lot side) and the river side (channel side). The water-surface profiles shown on Exhibit 2a are from the HEC-RAS project file "CaminoRealWestDS". The stationing corresponds to the control stationing as taken from the as-built plans. Initially, when improvements to the western channel were proposed, Castro Engineering felt that a 4.5-foot "floodwall" was required to provide a minimum of three-feet of freeboard to address superelevation at the junction of the north-to-south reach (the receiving channel) with the northeast-to-southwest reach (the approach channel). Under as-built conditions, the toe of the wall on the channel side is approximately 4.7 feet above the computed water-surface profile. This depth corresponds to the computed super-elevated rise (4.66 feet) relative to RS 1074.46 through 1150 as presented in Appendix E.5 of the TDN. As a result, the super-elevated water-surface profile is approximately 1.5 feet above the ground on the parking-lot side. The hydraulics of flow in a channel bend is complex and accurately estimating the magnitude of a transverse hydraulic gradient or superelevated rise in the water surface is difficult. To simplify the process, equations that are commonly used to estimate superelevation assume graduallyvaried flow in a uniform channel section of constant slope. At this junction, the receiving channel section is approximately twice the width of the approach channel section, and the slope of the receiving channel is approximately half the slope of the approach channel. In addition, two abrupt three-foot drops in the profile of the approach channel occur immediately upstream of the junction. Under these conditions, rapidly-varied, turbulent flow will exist, not gradually-varied, uniform flow. Since this reach of the western channel is a junction and not a channel bend, superelevation calculations are not applicable. In addition, if superelevation was applicable, Castro's approach to the computations significantly overestimates the potential rise in the water surface along the outer or western bank. Typically, the hydraulic properties of the approach channel are used to compute the super-elevated rise in the water surface under uniform-flow conditions. The computations provided in Appendix E.5 of the TDN were based on the hydraulic properties of the receiving channel. Since the computed rise is directly proportional to the velocity and top width of flow, using the hydraulic properties of the receiving channel overestimates the rise. When the hydraulic properties of the approach channel are used, the computed rise is limited to 1.8 feet, which is less than the average difference (2.25 feet) between the computed water-surface profile and the critical water-surface profile. Given the rapidly-varied flow conditions at the junction, critical depth would be a more reasonable approximation of the water-surface profile at the junction. As previously noted, this profile is well below the toe of the wall on both the landward side (i.e., parking lot side) and the river side (channel side). If there is still some concern that full or partial compliance with Paragraph 65.10 is warranted, the TDN prepared by Castro Engineering included (1) a structural analysis of the wall in Appendix E.4; (2) an operations and maintenance plan; and (3) the FEMA Region IX Levee Certification Checklist. In addition, embankment protection, embankment and foundation stability and settlement were addressed in two geotechnical letter reports prepared by Terracon, Inc. Although these letter reports were referenced on Page 11 of the TDN, copies were not included in Appendix E.4. These two documents (i.e., two letters dated March 17, 2008 and April 3, 2008) are provided as attachments to this response letter. JE Fuller/Hydrology & Geomorphology, Inc. Michael Baker Jr. Inc., LOMR Case No. 08-09-1560P – Response to 316-AD December 10, 2008 Page 3 2. An annotated FIRM is included as an attachment to this letter (Exhibit 3). 3. MT-2, Form 2 and a supplemental information sheet are included as an attachment to this letter. 4. All of the affected property owners were notified via a certified letter. A copy of the letter and a listing of the affected property owners, including the associated identification number from the certified mailing label, are included as an attachment to this letter. In addition to the attachments described above, a revised HEC-RAS model for the western channel (project file "CaminoRealWestDS") is included on the attached compact disk. Some input parameters in the original model were either changed or corrected during our review to more accurately depict the site conditions represented on the as-built plans. Overall these revisions did not significantly change the base flood elevations. The revisions were (1) bank station adjustments for RS 1000 and RS 1074.46 through RS 1165; (2) expansion/contraction increases at RS 1209.21, RS 1205.9, and between RS 950 and RS 1165; and (3) channel and overbank distance corrections for RS 1205.09 through RS 1220. If you have any questions, please feel free to contact me at your convenience. Sincerely, JE Fuller/Hydrology & Geomorphology, Inc. Robert L. Shand, P.E. Project Manager EXPIRES 06/30/2010 JE Fuller/Hydrology & Geomorphology, Inc. Looking north at north wall along River Road New culvert inlets and overflow channel along upstream side of north wall. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1b – 2008 Aerial, Page 1 Looking north at outlet to new 4-8'x5' RCBC and at-grade property along south side of River Road. Looking north at outlet to new 2-8'x5' RCBC. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1b – 2008 Aerial, Page 2 Looking east along overflow channel from inlet to the new 4-8'x5' RCBC. The north wall is visible along northern edge of River Road. Looking southwest at River Road and properties to the south from inlet to new 4-8'x5' RCBC. The north wall, including the western tie-back portion, is also shown. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 1 Looking south along the eastern tie-back portion of the north wall at the inlet to the new 2-8'x5 RCBC beneath River Road. Looking northeast from the outlet of the new 4-8'x5' RCBC beneath River Road. North wall is visible in background. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 2 Looking west along western channel from outlet to new 4-8'x5' RCBC. Looking south along eastern channel from outlet to new 2-8'x5' RCBC JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 3 Looking northwest along south side of River Road. The north wall is visible along the north side. Looking northwest at north wall along north side of River Road. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 4 Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 0.002 .028 .028 . 0 2 8 2388 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 25.041 .028 .028 Legend 2390 WS PF 2 . 0 2 8 Legend WS PF 2 WS PF 1 WS PF 1 Crit PF 1 2386 Crit PF 1 2388 Crit PF 2 Crit PF 2 Ground 2384 Ground 2386 Bank Sta 2382 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2384 2380 2382 2378 2380 2376 2378 2374 2376 0 20 40 60 80 100 120 140 0 20 40 60 Station (ft) Camino Real .028 2390 100 120 140 Station (ft) Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 50.145 .028 80 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 74.912 .028 .028 Legend 2390 WS PF 2 . 0 2 8 Legend WS PF 2 Crit PF 1 WS PF 1 WS PF 1 2388 Crit PF 1 2388 Crit PF 2 Crit PF 2 Ground 2386 Ground 2386 Bank Sta 2384 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2384 2382 2382 2380 2380 2378 2378 2376 2376 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 99.652 . 0 2 8 2392 .028 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 129.767 . 0 2 8 Legend 2392 WS PF 1 .028 . 0 2 8 Legend WS PF 1 Crit PF 1 WS PF 2 WS PF 2 2390 Crit PF 1 2390 Crit PF 2 Crit PF 2 Ground 2388 Ground 2388 Bank Sta 2386 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2386 2384 2384 2382 2382 2380 2380 2378 2378 0 20 40 60 80 100 120 140 0 20 40 Station (ft) Camino Real .028 2392 80 100 120 140 Station (ft) Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 149.791 .028 60 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 174.844 Legend 2392 WS PF 1 . 0 2 8 .028 . 0 2 8 Legend WS PF 1 WS PF 2 WS PF 2 Crit PF 1 2390 Crit PF 1 2390 Crit PF 2 Crit PF 2 Ground 2388 Ground 2388 Bank Sta 2386 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2386 2384 2384 2382 2382 2380 2380 2378 2378 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 199.788 . 0 2 8 2394 .028 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 237.369 . 0 2 8 2396 Legend WS PF 1 WS PF 2 .028 . 0 2 8 Legend WS PF 1 WS PF 2 2394 Crit PF 1 2392 Crit PF 1 Crit PF 2 Crit PF 2 2392 Ground 2390 Ground Bank Sta 2388 Levee Elevation (ft) Elevation (ft) Levee 2390 Bank Sta 2388 2386 2386 2384 2384 2382 2382 2380 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Looking west at the west wall (in front of carport) along the west top-of-bank of the north to south reach of the western channel. Looking down on the junction of the north to south reach with the northeast to southwest reach (entering at upper right corner of photograph) of the western channel. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2b – 2008 Aerial, Page 1 Looking northeast at the junction of the north to south reach with the northeast to southwest reach (entering at upper right corner of photograph). Looking east at junction of north-south reach with northeast-southwest reach (entering at upper left corner of photograph). The first in a series of two three-foot drops is visible just upstream of junction. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2b – 2008 Aerial, Page 2 Looking southwest at the west wall along the top of bank of the north to south reach of the western channel. Looking southwest at the west wall along the top of bank of the north to south reach of the western channel. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 1 Looking west at the northern limit of the west wall along the top of bank of the western channel Looking south along the parking lot side of the west wall from the north limit. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 2 Looking south along the channel side of the west wall from the north limit. Looking northeast along the northeast to southwest reach of the western channel from its junction with the north to south reach (note the series of two three-foot drops in the flow line just upstream of the junction). JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 3 Looking north (upstream) at the junction of the north to south reach of the western channel with the northeast to southwest reach, including the southern limit of the west wall. Looking downstream along the west bank from the junction of the north to south reach of the western channel with the northeast to southwest reach. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 4 West Downstream Channel_1205cfs Plan: west_asbuilts_1205cfs corrected 11/19/2008 West Downstream Channel_1205cfs Geom: West d/s channel_As-Builts corrected River = Stream Centerli Reach = Reach 1 .013 Plan: west_asbuilts_1205cfs corrected 11/19/2008 Geom: West d/s channel_As-Builts corrected RS = 1074.46 River = Stream Centerli Reach = Reach 1 .05 . 0 5 Legend 2360 .013 RS = 1131.91 .05 Legend 2360 Crit PF 1 Crit PF 1 WS PF 1 WS PF 1 Ground 2358 Ground 2358 Levee Bank Sta 2354 Bank Sta 2356 Elevation (ft) 2356 Elevation (ft) Levee 2354 2352 2352 2350 2350 2348 2348 2346 2346 80 100 120 140 160 80 100 Station (ft) West Downstream Channel_1205cfs 11/19/2008 West Downstream Channel_1205cfs Geom: West d/s channel_As-Builts corrected .013 140 160 Station (ft) Plan: west_asbuilts_1205cfs corrected River = Stream Centerli Reach = Reach 1 . 0 5 120 Plan: west_asbuilts_1205cfs corrected 11/19/2008 Geom: West d/s channel_As-Builts corrected RS = 1150 River = Stream Centerli Reach = Reach 1 .05 .013 RS = 1165 .05 Legend 2360 Legend 2360 Crit PF 1 Crit PF 1 WS PF 1 WS PF 1 Ground 2358 Ground 2358 Levee Levee Ineff 2356 Ineff 2356 Bank Sta Elevation (ft) Elevation (ft) Bank Sta 2354 2354 2352 2352 2350 2350 2348 2348 2346 2346 80 100 120 140 Station (ft) 1 in Horiz. = 40 ft 160 80 100 120 140 160 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 2d - HECRAS sections U.S. DEPARTMENT OF HOMELAND SECURITY - FEDERAL EMERGENCY MANAGEMENT AGENCY RIVERINE HYDROLOGY & HYDRAULICS FORM O.M.B No. 1660-0016 Expires: 12/31/2010 PAPERWORK REDUCTION ACT Public reporting burden for this form is estimated to average 3.25 hours per response. The burden estimate includes the time for reviewing instructions, searching existing data sources, gathering and maintaining the needed data, and completing, reviewing, and submitting the form. You are not required to respond to this collection of information unless a valid OMB control number appears in the upper right corner of this form. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, U.S. Department of Homeland Security, Federal Emergency Management Agency, 500 C Street, SW, Washington DC 20472, Paperwork Reduction Project (1660-0016). Submission of the form is required to obtain or retain benefits under the National Flood Insurance Program. Please do not send your completed survey to the above address. Flooding Source: Camino Real Wash Note: Fill out one form for each flooding source studied A. HYDROLOGY 1. Reason for New Hydrologic Analysis (check all that apply) Not revised (skip to section B) No existing analysis Improved data Alternative methodology Proposed Conditions (CLOMR) Changed physical condition of watershed 2. Comparison of Representative 1%-Annual-Chance Discharges Location River Road Drainage Area (Sq. Mi.) 1.7 Effective/FIS (cfs) Revised (cfs) 2067 1956 3. Methodology for New Hydrologic Analysis (check all that apply) Statistical Analysis of Gage Records Regional Regression Equations Precipitation/Runoff Model Pima County Methodology Other (please attach description) Please enclose all relevant models in digital format, maps, computations (including computation of parameters) and documentation to support the new analysis. 4. Review/Approval of Analysis If your community requires a regional, state, or federal agency to review the hydrologic analysis, please attach evidence of approval/review. 5. Impacts of Sediment Transport on Hydrology Yes No If yes, then fill out Section F (Sediment Transport) of Form 3. If No, then attach your Was sediment transport considered? explanation for why sediment transport was not considered. B. HYDRAULICS 1. Reach to be Revised Description Cross Section Water-Surface Elevations (ft.) Effective Proposed/Revised Downstream Limit Confluence with Rillito Creek 0 n/a 2338.3 Upstream Limit Approx. 3450' upstream of River Rd 3429.864 n/a 2456.13 2. Hydraulic Method/Model Used HEC-RAS, HY-8 DHS - FEMA Form 81-89A, DEC 07 Riverine Hydrology & Hydraulics Form MT-2 Form 2 Page 1 of 2 B. HYDRAULICS (CONTINUED) 3. Pre-Submittal Review of Hydraulic Models DHS-FEMA has developed two review programs, CHECK-2 and CHECK-RAS, to aid in the review of HEC-2 and HEC-RAS hydraulic models, respectively. These review programs may help verify that the hydraulic estimates and assumptions in the model data are in accordance with NFIP requirements, and that the data are comparable with the assumptions and limitations of HEC-2/HEC-RAS. CHECK-2 and CHECK-RAS identify areas of potential error or concern. These tools do not replace engineering judgment. CHECK-2 and CHECK-RAS can be downloaded from http://www.fema.gov/plan/prevent/fhm/frm_soft.shtm. We recommend that you review your HEC-2 and HEC-RAS models with CHECK-2 and CHECK-RAS. Review of your submittal and resolution of valid modeling discrepancies may result in reduced review time. 4. Natural Run Models Submitted Duplicate Effective Model* Corrected Effective Model* Existing or Pre-Project Conditions Model Revised or Post-Project Conditions Model File Name: File Name: File Name: File Name: Other - (attach description) File Name: Floodway Run n/a Plan Name: File Name: n/a Plan Name: File Name: n/a Plan Name: File Name: attached Plan Name: attached File Name: Plan Name: File Name: Datum Plan Name: Plan Name: Plan Name: Plan Name: Plan Name: * For details, refer to the corresponding section of the instructions. Digital Models Submitted? (Required) C. MAPPING REQUIREMENTS A certified topographic map must be submitted showing the following information (where applicable): the boundaries of the effective, existing, and proposed conditions 1%-annual-chance floodplain (for approximate Zone A revisions) or the boundaries of the 1%- and 0.2%-annual-chance floodplains and regulatory floodway (for detailed Zone AE, AO, and AH revisions); location and alignment of all cross sections with stationing control indicated; stream, road, and other alignments (e.g., dams, levees, etc.); current community easements and boundaries; boundaries of the requester's property; certification of a registered professional engineer registered in the subject State; location and description of reference marks; and the referenced vertical datum (NGVD, NAVD, etc.). Digital Mapping (GIS/CADD) Data Submitted Note that the boundaries of the existing or proposed conditions floodplains and regulatory floodway to be shown on the revised FIRM and/or FBFM must tie-in with the effective floodplain and regulatory floodway boundaries. Please attach a copy of the effective FIRM and/or FBFM, annotated to show the boundaries of the revised 1%- and 0.2%-annual-chance floodplains and regulatory floodway that tie-in with the boundaries of the effective 1%- and 0.2%-annual-chance floodplain and regulatory floodway at the upstream and downstream limits of the area of revision. Annotated FIRM and/or FBFM (Required) D. COMMON REGULATORY REQUIREMENTS* 1. For LOMR/CLOMR requests, do Base Flood Elevations (BFEs) increase? Yes No a. For CLOMR requests, if either of the following is true, please submit evidence of compliance with Section 65.12 of the NFIP regulations: • The proposed project encroaches upon a regulatory floodway and would result in increases above 0.00 foot. • The proposed project encroaches upon a SFHA with or without BFEs established and would result in increases above 1.00 foot. b. 2. Yes No For LOMR requests, does this request require property owner notification and acceptance of BFE increases? If Yes, please attach proof of property owner notification and acceptance (if available). Elements of and examples of property owner notification can be found in the MT-2 Form 2 Instructions. Does the request involve the placement or proposed placement of fill? Yes No If Yes, the community must be able to certify that the area to be removed from the special flood hazard area, to include any structures or proposed structures, meets all of the standards of the local floodplain ordinances, and is reasonably safe from flooding in accordance with the NFIP regulations set forth at 44 CFR 60.3(a)(3), 65.5(a)(4), and 65.6(a)(14). Please see the MT-2 instructions for more information. 3. For LOMR requests, is the regulatory floodway being revised? Yes No If Yes, attach evidence of regulatory floodway revision notification. As per Paragraph 65.7(b)(1) of the NFIP Regulations, notification is required for requests involving revisions to the regulatory floodway. (Not required for revisions to approximate 1%-annual-chance floodplains [studied Zone A designation] unless a regulatory floodway is being added. Elements and examples of regulatory floodway revision notification can be found in the MT-2 Form 2 Instructions.) 4. For LOMR/CLOMR requests, does this request have the potential to impact an endangered species? Yes No If Yes, please submit documentation to the community to show that you have complied with Sections 9 and 10 of the Endangered Species Act (ESA). Section 9 of the ESA prohibits anyone from “taking” or harming an endangered species. If an action might harm an endangered species, a permit is required from U.S. Fish and Wildlife Service or National Marine Fisheries Service under Section 10 of the ESA. For actions authorized, funded, or being carried out by Federal or State agencies, please submit documentation from the agency showing its compliance with Section 7(a)(2) of the ESA. * Not inclusive of all applicable regulatory requirements. For details, see 44 CFR parts 60 and 65. DHS - FEMA Form 81-89A, DEC 07 Riverine Hydrology & Hydraulics Form MT-2 Form 2 Page 2 of 2 MT-2, Form 2 – Riverine Hydrology and Hydraulics (Supplemental Information) „ Section A, HYDROLOGY • • Item 1, Reason for New Hydrologic Analysis – For the CLOMR (FEMA Case No. 04-090406R), a new hydrologic analysis of the Camino Real Wash was conducted by Arroyo Engineering, Inc. (Arroyo), since no previous analysis existed. A copy of their report was provided in Appendix B of the CLOMR TDN. The Arroyo study addressed three concentration points – one at the upstream end of the study reach, one at River Road, and one at the downstream limit (the confluence with the Rillito River). Do to flow splits upstream of River Road, the original flooding source was divided into two flooding sources at River Road – Camino Real East and Camino Real West. Consequently, the final floodplain analysis presented in this LOMR was based on a single regulatory discharge – the one associated with River Road. In addition, during preparation of the LOMR, a minor error was noticed in the original computation and the corresponding hydrologic data sheet was revised accordingly. This resulted in a reduction in the regulatory discharge as presented in the CLOMR (2,067 cfs) to the current value presented in this LOMR (1,956 cfs). Item 5, Impacts of Sediment Transport on Hydrology – Since the degree of urbanization within the upstream watershed has remained constant over the past few years and no significant change is anticipated (i.e., the watershed is almost totally development at the current zoning), no significant impacts associated with sediment transport were noted during the course of the hydrologic study. „ Section B, HYDRAULICS • • • Item 1, Reach to be Revised – The reach of the Camino Real Wash that is being revised as part of this LOMR extends from the Rillito Creek confluence to a point located approximately 3450 feet upstream of River Road. However, during the course of a detailed hydraulic analysis of the upstream reach, a major breakout or bifurcation of flood flows was noted approximately 850 feet upstream of River Road. From this point downstream the primary flooding source (i.e.,, the Camino Real Wash) is divided into the two nearly parallel reaches – Camino Real West, which follows the original flow path, and Camino Real East. Between River Road and the Rillito River, drainage infrastructure was either provided or upgraded to accommodate the regulatory discharge associated with each reach. Item 2, Hydraulic Method/Model Used – The water surface profiles for the two reaches downstream of River Road and the three reaches upstream of River Road were defined using HEC-RAS. The two primary River Road structures were modeled using HY-8. Item 4, Models Submitted – The revised or post-project conditions models for each reach are identified as follows: Page 1 of 1 Flooding Source Camino Real Wash Reach Upstream West Downstream East Downstream Plan Name 1956cfs Plan No. P07 n/a west_asbuilts_1205cfs corrected P02 n/a as-built_781cfs P11 File Name CaminoRealUpstream Subreach Upstream East West Overflow South CaminoRealWestDS CaminoRealEastDS „ Section D, COMMON REGULATORY REQUIREMENTS • • Item 1a, Do BFEs increase? – No, BFEs were not previously established for this flooding source (i.e., the effective mapping is Zone A). Item 1b, Proof of Property Owner Notification – Property owners were notified by certified mail. Copies of the mailing receipts are attached. Page 2 of 1 December 3, 2008 «MAIL1» «MAIL2» «MAIL3» «MAIL4» «MAIL5» «ZIP9» Re: Notification of Changes to the Camino Real Wash Floodplain Dear Property Owner: The Pima County Regional Flood Control District has applied for a Letter of Map Revision (LOMR) from the Federal Emergency Management Agency to re-map the Camino Real Wash floodplain through the Federal Emergency Management Agency (FEMA). If you are receiving this letter, the proposed changes would impact your property at «PARCEL5» (Parcel No. «PARCEL1»). The proposed map revisions north of River Road reflect better topographic information. The proposed modifications south of River Road reflect that the Regulatory Flood is contained within the drainage infrastructure. Attached is a map reflecting the current 1% chance flood (100-year floodplain) and the proposed floodplain. Enclosed is a brochure that addresses the most common questions associated with FEMA’s LOMR process. If you have any questions or concerns about the proposed changes to the FIRM or its effects on your property, you may contact me at 520-243-1800. Sincerely, R. “Terry” Hendricks CFM, Chief Hydrologist Planning and Development Division RTH Cc James Vogelsberg. P.E. City of Tucson Development Services PARCEL1 10823070C 10825001A 10815121B 10822011G 108220890 10822012H 10822013C 10823003C 108230140 10822012C 10822014B 10822014C 10822012R 10823065A 108230680 10823073L 10815003E 10815003D 108220150 108230150 10823007A 10823073F 10822011L 10823072A 108151340 10822011N 10822011Q 10822012L 10822012P 10822012Q 10822024B 10822024D 10822012M 10822011J 10822010D 108230160 10822022A 108230170 108230180 108230250 10823026A 10823066A 10815121C 10822011H 10823069A 10822022C 10815121A 10822011F 10822012N PARCEL5 4416 N CAMINO REAL NOT APPLICABLE NOT APPLICABLE 4723 N LA LOMITA 4721 N CAMINO CORTO 4700 N CAMINO CORTO NOT APPLICABLE 4540 N CAMINITO PAIS NOT APPLICABLE 4620 N CAMINO REAL 4530 N CAMINO REAL 4441 N CAMINO DEL SANTO 4590 N CAMINO REAL 4512 N CAMINO REAL 4432 N CAMINO REAL 2455 E CAMINITO DE LOS RANCHOS 4810 N CAMINO REAL 4840 N CAMINO REAL 4421 N CAMINO DEL SANTO 4502 N CAMINITO ESTE 4535 N CAMINO REAL 4620 N CAMINITO PAIS 4655 N LA LOMITA 4555 N CAMINO REAL NOT APPLICABLE NOT APPLICABLE 4685 N LA LOMITA 4610 N CAMINO REAL 4564 N CAMINO REAL 4576 N CAMINO REAL 4511 N CAMINO DEL REY 4500 N CAMINO DEL REY 4544 N CAMINO REAL 4747 N LA LOMITA RD NOT APPLICABLE 4460 N CAMINITO ESTE NOT APPLICABLE NOT APPLICABLE NOT APPLICABLE NOT APPLICABLE NOT APPLICABLE 4452 N CAMINO REAL NOT APPLICABLE NOT APPLICABLE 4422 N CAMINO REAL NOT APPLICABLE NOT APPLICABLE 4711 N LA LOMITA 4550 N CAMINO REAL MAIL1 4416 N CAMINO REAL LLC 4416 N CAMINO REAL LLC BOGEN EARL TR BOGEN EARL TR BURKE FAMILY DECEDENTS TR CALDWELL JAY & DIANA S CAMINO ANTONIO LLC CHANDLER KEALY CITY OF TUCSON COLE EDWARD R & AMBRE J REVOCABLE TRUST CONZE ELIZABETH B CONZE ELIZABETH B DECONCINI JEFF & YAGER-DECONCINI ERIN DEED & NOTE TRADERS LLC FICO JOE FOX BYRON NEAL & PENNER CYNTHIA L FRANKENBURG WILLIAM & WILHELMINE G A B 1982 TR GALL CHRISTOPHER & COURTNEY ANN JT/RS GATTMANN J REED & DOROTHY C TRUSTEES GOTTLIEB STEVEN T & PENNY LAURA J JONES JOSEPH L A LINDQUIST SUZANNE TR LOGAN ROBERT K & JUNE D TR MC NAMARA GOLDSMITH & JACKSON PC MC NAMARA GOLDSMITH & JACKSON PC MC NAMARA MICHAEL F & MARISU MEINKE TOD R & HOLUP JILL A REVOC TR MOORE CYRUS & KRISTIN REVOC TR MOORE RUSSELL CHASE LIVING TR PARADIES JED PARADIES JED PARTAGAS RAUL & MARISELA RASOUMOFF THEADORE RYAN KENNETH J & JUDITH A SANCHEZ PHILLIP R LIVING TR SHISSLAK CATHERINE M SOSNICKI RICHARD & SANDRA SOSNICKI RICHARD & SANDRA SOSNICKI RICHARD & SANDRA SOSNICKI RICHARD & SANDRA STAPLES ROBERT B & JENNIFER H STEENLAND ROGER & ANN STEENLAND ROGER & ANN TERZONI GIACOMO FRANK TRELO INVESTMENTS LLC VAN DYKE JOAN STEARNS TRUST VAN DYKE JOAN STEARNS TRUST YAGER CASEY & LESLIE MAIL2 MAIL3 ATTN: HENRY BOGEN & BETSY C ATTN: HENRY BOGEN & BETSY C ATTN: JAMES L BURKE ATTN: NCH CORPORATION REAL ESTATE DIVISION ATTN: PROPERTY MANAGMENT ATTN: GEORGE A BINNEY TR TRUST OPERATIONS OC4-7 ATTN: UNITED CALIFORNIA BANK PROFIT SHARING PLAN PROFIT SHARING PLAN ATTN: CYRUS E & KRISTIN A MOORE TR MAIL4 PO BOX 43065 PO BOX 43065 4723 N LA LOMITA 4723 N LA LOMITA 4721 N CAMINO CORTO PO BOX 65587 2850 E SKYLINE DR STE 200 PO BOX 65734 PO BOX 27210 4620 N CAMINO REAL 4441 N CAMINO DEL SANTO 4441 N CAMINO DEL SANTO 3233 N TREAT CIR 1302 N ALVERNON WAY 4432 N CAMINO REAL 2455 E CAMINITO DE LOS RANCHOS PO BOX 10247 PO BOX 7 4421 N CAMINO DEL SANTO PO BOX 54400 4535 N CAMINO REAL 4620 N CAMINITO PAIS 4655 N LA LOMITA PO BOX 65297 1670 E RIVER RD #200 1670 E RIVER RD #200 4685 N LA LOMITA RD 4610 N CAMINO REAL 4564 N CAMINO REAL 2568 E WATER 4511 N CAMINO DEL REY 4511 N CAMINO DEL RAY 2728 E 6TH 4747 N LA LOMITA RD 4621 N CAMINO REAL 98 WOODS LOOP 4411 N CAMINO DEL REY 2389 E RIVER RD 2389 E RIVER RD 2389 E RIVER RD 2389 E RIVER RD PO BOX 65447 4735 N LA LOMITA 4735 N LA LOMITA 4422 N CAMINO REAL 4479 N CAMINO DEL REY 4711 N LA LOMITA 4711 N LA LOMITA 3790 N CAMINO LEAMARIA MAIL5 TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ BAINBRIDGE ISLAND WA CRYSTAL BAY NV TUCSON AZ LOS ANGELES CA TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ SANTA FE NM TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ TUCSON AZ ZIP9 85733-3065 85733-3065 85718-5941 85718-5941 85718 85728-5587 85718-8014 85728-5734 85726-7210 85718 85718 85718 85716-1145 85712-3802 85718-6415 85718 98110-0247 89402-0007 85718 90054- 0400 85718 85718 85718-5939 85728-5297 85718 85718 85718 85718 85718-6417 85716-2432 85718-6609 85718 85716 85718 85718 87505-1449 85718-6607 85718 85718 85718 85718 85728-5447 85718 85718 85718 85718-6607 85718-5941 85718-5941 85716 CERTIFIED1 CERTIFIED2 7007268000027540 2529 7007268000027540 2529 7007268000027540 2536 7007268000027540 2536 7007268000027540 2543 7007268000027540 2550 7007268000027540 2567 7007268000027540 2574 7007268000027540 2581 7007268000027540 2895 7007268000027540 2598 7007268000027540 2598 7007268000027540 2604 7007268000027540 2611 7007268000027540 2628 7007268000027540 2635 7007268000027540 2642 7007268000027540 2659 7007268000027540 2871 7007268000027540 2888 7007268000027540 2666 7007268000027540 2673 7007268000027540 2680 7007268000027540 2697 7007268000027540 2703 7007268000027540 2703 7007268000027540 2710 7007268000027540 2727 7007268000027540 2734 7007268000027540 2741 7007268000027540 2758 7007268000027540 2758 7007268000027540 5265 7007268000027540 2901 7007268000027540 2772 7007268000027540 2789 7007268000027540 2796 7007268000027540 2802 7007268000027540 2802 7007268000027540 2802 7007268000027540 2802 7007268000027540 2819 7007268000027540 2826 7007268000027540 2826 7007268000027540 2833 7007268000027540 2840 7007268000027540 2857 7007268000027540 2857 7007268000027540 2864 Map 4 4 1 1 1 2 3 3 3 2 4 3 2 4 4 2 1 1 4 3 3 2 1 3 1 1 1 2 3 3 3 3 3 1 2 4 3 4 4 4 4 4 1 1 4 3 1 1 3 Looking north at north wall along River Road New culvert inlets and overflow channel along upstream side of north wall. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1b – 2008 Aerial, Page 1 Looking north at outlet to new 4-8'x5' RCBC and at-grade property along south side of River Road. Looking north at outlet to new 2-8'x5' RCBC. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1b – 2008 Aerial, Page 2 Looking east along overflow channel from inlet to the new 4-8'x5' RCBC. The north wall is visible along northern edge of River Road. Looking southwest at River Road and properties to the south from inlet to new 4-8'x5' RCBC. The north wall, including the western tie-back portion, is also shown. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 1 Looking south along the eastern tie-back portion of the north wall at the inlet to the new 2-8'x5 RCBC beneath River Road. Looking northeast from the outlet of the new 4-8'x5' RCBC beneath River Road. North wall is visible in background. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 2 Looking west along western channel from outlet to new 4-8'x5' RCBC. Looking south along eastern channel from outlet to new 2-8'x5' RCBC JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 3 Looking northwest along south side of River Road. The north wall is visible along the north side. Looking northwest at north wall along north side of River Road. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 1c – 11/08 Photos, Page 4 Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 0.002 .028 .028 . 0 2 8 2388 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 25.041 .028 .028 Legend 2390 WS PF 2 . 0 2 8 Legend WS PF 2 WS PF 1 WS PF 1 Crit PF 1 2386 Crit PF 1 2388 Crit PF 2 Crit PF 2 Ground 2384 Ground 2386 Bank Sta 2382 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2384 2380 2382 2378 2380 2376 2378 2374 2376 0 20 40 60 80 100 120 140 0 20 40 60 Station (ft) Camino Real .028 2390 100 120 140 Station (ft) Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 50.145 .028 80 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 74.912 .028 .028 Legend 2390 WS PF 2 . 0 2 8 Legend WS PF 2 Crit PF 1 WS PF 1 WS PF 1 2388 Crit PF 1 2388 Crit PF 2 Crit PF 2 Ground 2386 Ground 2386 Bank Sta 2384 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2384 2382 2382 2380 2380 2378 2378 2376 2376 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 99.652 . 0 2 8 2392 .028 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 129.767 . 0 2 8 Legend 2392 WS PF 1 .028 . 0 2 8 Legend WS PF 1 Crit PF 1 WS PF 2 WS PF 2 2390 Crit PF 1 2390 Crit PF 2 Crit PF 2 Ground 2388 Ground 2388 Bank Sta 2386 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2386 2384 2384 2382 2382 2380 2380 2378 2378 0 20 40 60 80 100 120 140 0 20 40 Station (ft) Camino Real .028 2392 80 100 120 140 Station (ft) Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 149.791 .028 60 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 174.844 Legend 2392 WS PF 1 . 0 2 8 .028 . 0 2 8 Legend WS PF 1 WS PF 2 WS PF 2 Crit PF 1 2390 Crit PF 1 2390 Crit PF 2 Crit PF 2 Ground 2388 Ground 2388 Bank Sta 2386 Levee Elevation (ft) Elevation (ft) Levee Bank Sta 2386 2384 2384 2382 2382 2380 2380 2378 2378 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Camino Real Plan: 1956cfs 6/19/2008 Camino Real Geom: CaminoReal with walls River = Overflow Reach = South RS = 199.788 . 0 2 8 2394 .028 . 0 2 8 Plan: 1956cfs 6/19/2008 Geom: CaminoReal with walls River = Overflow Reach = South RS = 237.369 . 0 2 8 2396 Legend WS PF 1 WS PF 2 .028 . 0 2 8 Legend WS PF 1 WS PF 2 2394 Crit PF 1 2392 Crit PF 1 Crit PF 2 Crit PF 2 2392 Ground 2390 Ground Bank Sta 2388 Levee Elevation (ft) Elevation (ft) Levee 2390 Bank Sta 2388 2386 2386 2384 2384 2382 2382 2380 0 20 40 60 80 100 120 Station (ft) 1 in Horiz. = 60 ft 140 0 20 40 60 80 100 120 140 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 1d - HEC-RAS sections Looking west at the west wall (in front of carport) along the west top-of-bank of the north to south reach of the western channel. Looking down on the junction of the north to south reach with the northeast to southwest reach (entering at upper right corner of photograph) of the western channel. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2b – 2008 Aerial, Page 1 Looking northeast at the junction of the north to south reach with the northeast to southwest reach (entering at upper right corner of photograph). Looking east at junction of north-south reach with northeast-southwest reach (entering at upper left corner of photograph). The first in a series of two three-foot drops is visible just upstream of junction. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2b – 2008 Aerial, Page 2 Looking southwest at the west wall along the top of bank of the north to south reach of the western channel. Looking southwest at the west wall along the top of bank of the north to south reach of the western channel. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 1 Looking west at the northern limit of the west wall along the top of bank of the western channel Looking south along the parking lot side of the west wall from the north limit. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 2 Looking south along the channel side of the west wall from the north limit. Looking northeast along the northeast to southwest reach of the western channel from its junction with the north to south reach (note the series of two three-foot drops in the flow line just upstream of the junction). JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 3 Looking north (upstream) at the junction of the north to south reach of the western channel with the northeast to southwest reach, including the southern limit of the west wall. Looking downstream along the west bank from the junction of the north to south reach of the western channel with the northeast to southwest reach. JE Fuller/ Hydrology & Geomorphology, Inc. Exhibit 2c – 11/2008 Photos, Page 4 West Downstream Channel_1205cfs Plan: west_asbuilts_1205cfs corrected 11/19/2008 West Downstream Channel_1205cfs Geom: West d/s channel_As-Builts corrected River = Stream Centerli Reach = Reach 1 .013 Plan: west_asbuilts_1205cfs corrected 11/19/2008 Geom: West d/s channel_As-Builts corrected RS = 1074.46 River = Stream Centerli Reach = Reach 1 .05 . 0 5 Legend 2360 .013 RS = 1131.91 .05 Legend 2360 Crit PF 1 Crit PF 1 WS PF 1 WS PF 1 Ground 2358 Ground 2358 Levee Bank Sta 2354 Bank Sta 2356 Elevation (ft) 2356 Elevation (ft) Levee 2354 2352 2352 2350 2350 2348 2348 2346 2346 80 100 120 140 160 80 100 Station (ft) West Downstream Channel_1205cfs 11/19/2008 West Downstream Channel_1205cfs Geom: West d/s channel_As-Builts corrected .013 140 160 Station (ft) Plan: west_asbuilts_1205cfs corrected River = Stream Centerli Reach = Reach 1 . 0 5 120 Plan: west_asbuilts_1205cfs corrected 11/19/2008 Geom: West d/s channel_As-Builts corrected RS = 1150 River = Stream Centerli Reach = Reach 1 .05 .013 RS = 1165 .05 Legend 2360 Legend 2360 Crit PF 1 Crit PF 1 WS PF 1 WS PF 1 Ground 2358 Ground 2358 Levee Levee Ineff 2356 Ineff 2356 Bank Sta Elevation (ft) Elevation (ft) Bank Sta 2354 2354 2352 2352 2350 2350 2348 2348 2346 2346 80 100 120 140 Station (ft) 1 in Horiz. = 40 ft 160 80 100 120 140 160 Station (ft) 1 in Vert. = 4 ft JE Fuller/Hydrology & Geomorphology, Inc. Exhibit 2d - HECRAS sections