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Home My WebLink AboutCT 11-04; QUARRY CREEK; LETTER OF MAP REVISION (LOMR); DWG 484-5A; 2016-11-11LETTER OF MAP REVISION REQUEST FOR QUARRY CREEK November 11, 2016 Wayne W. Chang, MS, PE Chang Civil Engineering ◦ Hydrology ◦ Hydraulics ◦ Sedimentation P.O. Box 9496 Rancho Santa Fe, CA 92067 (858) 692-0760 -TABLE OF CONTENTS - Introduction ...................................................................................................................................1 CLOMR Conditions ......................................................................................................................2 Conclusion ....................................................................................................................................5 Figures...........................................................................................................................................6 APPENDICES A. CLOMR Approval; MT-2 Forms 1, 2, and 3; Recorded Levee Maintenance Agreement B. As-Built HEC-RAS Analysis MAP POCKET HEC-RAS Work Map, Annotated FIRM, Public Notices, and CD Containing Electronic Files 1 INTRODUCTION The Quarry Creek project is located south of Haymar Drive/State Route 78 and west of College Boulevard in the cities of Carlsbad and Oceanside, California (see the Vicinity Map). The total project site covers 155.36 acres that is mostly in the city of Carlsbad although a small northeastern portion of the site (4.10 acres) is in the city of Oceanside. The site historically contained a rock quarry (South Coast Materials Quarry) and associated operations. After the completion of the quarry operations, the site was reclaimed and intended to be developed as a mixed-use project containing open space, medium to high density residential development, and community facilities. Buena Vista Creek enters the eastern portion of the project site just upstream of El Salto Falls (a natural waterfall nearly 30 feet high), and flows in a westerly direction through the middle of the site. The Flood Insurance Rate Map (FIRM Number 06073C0766G dated May 16, 2016) containing the Buena Vista Creek floodplain and floodway is included on the CD in the map pocket. A Conditional Letter of Map Revision (Case No. 14-09-2458R) was issued for Quarry 2 Creek by the Federal Emergency Management Agency (FEMA) on March 12, 2015. The CLOMR approval letter is included in Appendix A. The original CLOMR documents (pdf of the CLOMR report, associated electronic files, etc.) are included on the CD along with relevant documents and correspondence generated during the CLOMR processing. The CLOMR reflected proposed grading and improvements to Buena Vista Creek within the project site that affect the floodplain and floodway. The grading and improvements that were modeled in the CLOMR and that have now been constructed are as follows (see the CLOMR report for additional details): 1.Buena Vista Creek was channelized from approximately 3,000 feet downstream to approximately 1,220 feet downstream of College Boulevard (see Figure 1 and 2 after this report text). The creek’s channel bottom was widened to 150 feet with 2.5 to 1 (horizontal to vertical) banks that accommodate the 100-year flow with the required freeboard (minimum 1 feet of freeboard). A terrace was incorporated into the left and right channel banks along the channelization reach. Seven riprap drop structures were installed along the channel bed to flatten the longitudinal creek slope to minimize and control erosive flow velocities. Three roadway crossings were removed during the creek widening. 2. A vehicular bridge with two 3-foot wide pier walls has been constructed near the westerly end of the channelization reach between stations 3.774 and 3.792 (see Figure 3). The bridge has several feet of freeboard over the 100-year water surface elevation, so exceeds the 1-foot freeboard requirement. 3.The existing and proposed ground surface north of El Salto Falls (between HEC-RAS stations 3.968 and 4.075) is at a lower elevation than the adjacent segment of Buena Vista Creek. In this area, the north (right) creek bank was designed as a levee (see Figure 4) that meets FEMA’s levee criteria as published in Title 44, Part 65.10 of the Code of Federal Regulations. All of the necessary levee criteria have been satisfied. The proposed channelization, bridge, and levee have been constructed. The channelization and levee were constructed as part of the South Coast Materials Quarry reclamation. The proposed bridge was constructed by the mixed-use development project (City of Carlsbad Tract C.T. 11- 04). Since construction is complete, this Letter of Map Revision has been prepared to obtain FEMA’s final approval for the floodplain and floodway changes proposed by the Quarry Creek CLOMR. The construction is consistent with the approved plans used for the CLOMR. The revision requestor, Cornerstone Communities, had recent post-construction aerial topographic mapping flown that reflects the completed as-built construction. The mapping was flown on July 5, 2016, is at a 2-foot contour interval, and on NGVD 29 datum. The mapping covers the completed construction within the 100- and 500-year floodplain. CLOMR CONDITIONS This LOMR contains updated forms, engineering analyses, and mapping to reflect the as-built conditions. There are no changes from the CLOMR except that the hydraulic analyses were updated using the post-construction flown topographic mapping. Since the project was 3 constructed in conformance with the plans, the updated hydraulic analyses are similar to the CLOMR’s post-project analyses. The CLOMR letter contains several conditions that must be met by this LOMR. The following summarizes each condition in italics followed by a discussion of how each condition is met:  Form 1, entitled "Overview & Concurrence Form." Detailed application and certification forms must be used for requesting final revisions to the maps. Therefore, when the map revision request for the area covered by this letter is submitted, Form I must be included. Form 1 is included in Appendix A.  As-built plans, certified by a registered professional engineer, of all proposed project elements. Aerial topographic mapping was flown on July 5, 2016 covering the post-construction area within the floodplain to represent the as-built conditions. The mapping is at a 2-foot contour interval and NGVD 29 vertical datum. The mapping is included on the Certified Topographic Work Map included in the map pocket. The AutoCAD files of the work map are on the CD in the map pocket.  If as-built conditions differ from the proposed plans, please submit new forms, which may be accessed at https://www.fema.gov/national-flood-insurance-program-flood-hazard- mapping/mt-2-application-forms-and-instructions, or annotated copies of the previously submitted forms showing the following revised information. Annotated copies of the previously submitted Form 2 and 3 are included in Appendix A. The changes associated with this LOMR are in red. The majority of the forms did not change. o Hydraulic analyses, for as-built conditions, of the base (1-percent-annual-chance) flood and the 10-percent, 2-percent, and 0.2-percent-annual-chance floods, together with a topographic work map showing the revised floodplain boundary delineations. Please ensure that the revised information ties into the currently effective information at the downstream and upstream ends of the revised reach. Updated post-project 10-, 50, 100-, and 500-year as well as 100-year floodplain/floodway HEC-RAS analyses based on the post-construction topographic mapping are included in Appendix B and on the CD in the map pocket. Cross-sections 3.727 to 4.075 were updated using the new mapping. The remaining cross-sections are not affected by construction, so are identical to the CLOMR cross-sections. The Certified Topographic Work Map shows the revised floodplain and floodway boundary delineations. The revised information ties into the effective information within the required tolerance of 0.5 feet. The analyses are on NGVD 29 and the cross-sections are looking upstream, which is consistent with the CLOMR HEC-RAS. 4 o An annotated copy of the FIRM, at the scale of the effective FIRM, that shows the revised floodplain and floodway boundary delineations shown on the submitted work map and how they tie into the floodplain and floodway boundary delineations shown on the current effective FIRM at the downstream and upstream ends of the revised reach An Annotated FIRM is included in the map pocket and on the CD. The Annotated FIRM is at the scale of the effective FIRM, shows the revised floodplains and floodway, and ties into the effective floodplains and floodway. A copy of the public notice distributed by your community, stating its intent to revise the regulatory floodway, or a signed statement by your community that it has notified all affected property owners and affected adjacent jurisdictions The public notices from the City of Oceanside and City of Carlsbad are included in the map pocket. These are separate newspaper notices published by each community. Documentation of the notification to property owners who will be affected by any widening/shifting of the base floodplain and/or any BFE increases along Buena Vista Creek. Individual notices have been sent by the City of Oceanside and are included in the map pocket along with the exhibit that accompanied each notice. There are no properties in the City of Carlsbad that were affected other than the revision requestor’s property, so no notices were sent by the City of Carlsbad. Evidence that your community has, prior to approval of the proposed encroachment, adopted floodplain management ordinances that incorporate the increased BFEs and revised floodway boundary delineations to reflect the post-project conditions, as stated in Paragraph 65.12(b). Both communities are participants in the NFIP and contain floodplain regulations. The City of Carlsbad’s Zoning Ordinance contains “Floodplain Management Regulations.” Section 21.110.070 of the regulations state that “The areas of special flood hazard identified by the . . . Federal Emergency Management Agency (FEMA) in the San Diego County and incorporated areas Flood Insurance Study . . . and all subsequent amendments and/or revisions are herein adopted by reference and declared to be part of this chapter.” The City of Oceanside’s Municipal Code contains “Floodplain Management Regulations.” Section 6.43.3(c)(2)(a) of the regulations state that “Within six (6) months of information becoming available or project completion, whichever comes first, the floodplain administrator shall submit or assure that the permit applicant submits technical or scientific data to FEMA for a letter of map revision (LOMR).” 5  An officially adopted maintenance and operation plan for the Levee Maintenance Plan Quarry Creek Vesting Tentative Map (C.T. 11-04). This plan, which may be in the form of a written statement from the community Chief Executive Officer, an ordinance, or other legislation, must describe the nature of the maintenance activities, the frequency with which they will be performed, and the title of the local community official who will be responsible for ensuring that the maintenance activities are accomplished. The recorded Levee Maintenance Agreement with the City of Carlsbad is included in Appendix A and on the CD. CONCLUSION A Conditional Letter of Map Revision (Case No. 14-09-2458R) was issued for Quarry Creek by the Federal Emergency Management Agency (FEMA) on March 12, 2015. The grading and improvements associated with the CLOMR have been completed and as-built via new flown topographic mapping. As a result, this LOMR is being submitted to request a revision to the FIRM and FIS. The as-built condition was constructed in conformance with the original design plans. However, since new topographic mapping was flown, the post-project HEC-RAS analysis has been updated using the new mapping. This is the only engineering analysis that changed from the CLOMR submittal. The CLOMR report and data as well as the as-built hydraulic and work map files are included in the CD. A Certified Topographic Work Map and Annotated FIRM are included in the map pocket. 6 Figure 1. Looking Downstream (West) towards Completed Channelization and Bridge Figure 2. Looking Upstream (East) from Bridge towards Completed Channelization 7 Figure 3. Completed Vehicular Bridge Figure 4. Levee Face with Turf Reinforcement Mat and Landscaping APPENDIX A CLOMR Approval MT-2 Forms 1, 2, and 3 Recorded Levee Maintenance Agreement FEMA Form 086-0-27, (2/2011) Previously FEMA Form 81-89 MT-2 Form 1 Page 1 of 3 U.S. DEPARTMENT OF HOMELAND SECURITY FEDERAL EMERGENCY MANAGEMENT AGENCY OVERVIEW & CONCURRENCE FORM O.M.B No. 1660-0016 Expires February 28, 2014 PAPERWORK BURDEN DISCLOSURE NOTICE Public reporting burden for this form is estimated to average 1 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 it displays a valid OMB control number. Send comments regarding the accuracy of the burden estimate and any suggestions for reducing this burden to: Information Collections Management, Department of Homeland Security, Federal Emergency Management Agency, 1800 South Bell Street, Arlington, VA 20958-3005, 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. PRIVACY ACT STATEMENT AUTHORITY: The National Flood Insurance Act of 1968, Public Law 90-448, as amended by the Flood Disaster Protection Act of 1973, Public Law 93- 234. PRINCIPAL PURPOSE(S): This information is being collected for the purpose of determining an applicant's eligibility to request changes to National Flood Insurance Program (NFIP) Flood Insurance Rate Maps (FIRM). ROUTINE USE(S): The information on this form may be disclosed as generally permitted under 5 U.S.C § 552a(b) of the Privacy Act of 1974, as amended. This includes using this information as necessary and authorized by the routine uses published in DHS/FEMA/NFIP/LOMA-1 National Flood Insurance Program (NFIP); Letter of Map Amendment (LOMA) February 15, 2006, 71 FR 7990. DISCLOSURE: The disclosure of information on this form is voluntary; however, failure to provide the information requested may delay or prevent FEMA from processing a determination regarding a requested change to a (NFIP) Flood Insurance Rate Maps (FIRM). A. REQUESTED RESPONSE FROM DHS-FEMA This request is for a (check one): CLOMR: A letter from DHS-FEMA commenting on whether a proposed project, if built as proposed, would justify a map revision, or proposed hydrology changes (See 44 CFR Ch. 1, Parts 60, 65 & 72). LOMR: A letter from DHS-FEMA officially revising the current NFIP map to show the changes to floodplains, regulatory floodway or flood elevations. (See 44 CFR Ch. 1, Parts 60, 65 & 72) B. OVERVIEW 1. The NFIP map panel(s) affected for all impacted communities is (are): Community No. Community Name State Map No. Panel No. Effective Date Example: 480301 480287 City of Katy Harris County TX TX 48473C 48201C 0005D 0220G 02/08/83 09/28/90 060285 City of Carlsbad CA 06073C 0766G 05/16/12 060294 City of Oceanside CA 06073C 0766G 05/16/12 2. a. Flooding Source: Buena Vista Creek b. Types of Flooding: Riverine Coastal Shallow Flooding (e.g., Zones AO and AH) Alluvial fan Lakes Other (Attach Description) 3. Project Name/Identifier: Quarry Creek C.T. 11-04 LOMR 4. FEMA zone designations affected: AE, X (choices: A, AH, AO, A1-A30, A99, AE, AR, V, V1-V30, VE, B, C, D, X) 5.Basis for Request and Type of Revision: a. The basis for this revision request is (check all that apply) Physical Change Improved Methodology/Data Regulatory Floodway Revision Base Map Changes Coastal Analysis Hydraulic Analysis Hydrologic Analysis Corrections Weir-Dam Changes Levee Certification Alluvial Fan Analysis Natural Changes New Topographic Data Other (Attach Description) Note: A photograph and narrative description of the area of concern is not required, but is very helpful during review. FEMA Form 086-0-27, (2/2011) Previously FEMA Form 81-89 MT-2 Form 1 Page 2 of 3 b. The area of revision encompasses the following structures (check all that apply) Structures: Channelization Levee/Floodwall Bridge/Culvert Dam Fill Other (Attach Description) 6.Documentation of ESA compliance is submitted (required to initiate CLOMR review). Please refer to the instructions for more information. C. REVIEW FEE Has the review fee for the appropriate request category been included? Yes Fee amount: $8,250.00 No, Attach Explanation Please see the DHS-FEMA Web site at http://www.fema.gov/plan/prevent/fhm/frm_fees.shtm for Fee Amounts and Exemptions. D. SIGNATURE All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Name: Wayne W. Chang Company: Chang Consultants Mailing Address: P.O. Box 9496 Rancho Santa Fe, CA 92067 Daytime Telephone No.: 858-692-0760 Fax No.: 858-832-1402 E-Mail Address: wayne@changconsultants.com Signature of Requester (required): Date: 11/11/2016 As the community official responsible for floodplain management, I hereby acknowledge that we have received and reviewed this Letter of Map Revision (LOMR) or conditional LOMR request. Based upon the community's review, we find the completed or proposed project meets or is designed to meet all of the community floodplain management requirements, including the requirements for when fill is placed in the regulatory floodway, and that all necessary Federal, State, and local permits have been, or in the case of a conditional LOMR, will be obtained. For Conditional LOMR requests, the applicant has documented Endangered Species Act (ESA) compliance to FEMA prior to FEMA’s review of the Conditional LOMR application. For LOMR requests, I acknowledge that compliance with Sections 9 and 10 of the ESA has been achieved independently of FEMA’s process. For actions authorized, funded, or being carried out by Federal or State agencies, documentation from the agency showing its compliance with Section 7(a)(2) of the ESA will be submitted. In addition, we have determined that the land and any existing or proposed structures to be removed from the SFHA are or will be reasonably safe from flooding as defined in 44CFR 65.2(c), and that we have available upon request by FEMA, all analyses and documentation used to make this determination. Community Official’s Name and Title: Community Name: City of Carlsbad Mailing Address: Daytime Telephone No.: Fax No.: E-Mail Address: Community Official’s Signature (required): Date: CERTIFICATION BY REGISTERED PROFESSIONAL ENGINEER AND/OR LAND SURVEYOR This certification is to be signed and sealed by a licensed land surveyor, registered professional engineer, or architect authorized by law to certify elevation information data, hydrologic and hydraulic analysis, and any other supporting information as per NFIP regulations paragraph 65.2(b) and as described in the MT-2 Forms Instructions. All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Certifier’s Name: Wayne W. Chang License No.: 46548 Expiration Date: 6/30/2017 Company Name: Chang Consultants Telephone No.: 858-692-0760 Fax No.: 858-832-1402 Signature: Date: 11/11/2016 E-Mail Address: wayne@changconsultants.com FEMA Form 086-0-27, (2/2011) Previously FEMA Form 81-89 MT-2 Form 1 Page 2 of 3 b. The area of revision encompasses the following structures (check all that apply) Structures: Channelization Levee/Floodwall Bridge/Culvert Dam Fill Other (Attach Description) 6.Documentation of ESA compliance is submitted (required to initiate CLOMR review). Please refer to the instructions for more information. C. REVIEW FEE Has the review fee for the appropriate request category been included? Yes Fee amount: $8,250.00 No, Attach Explanation Please see the DHS-FEMA Web site at http://www.fema.gov/plan/prevent/fhm/frm_fees.shtm for Fee Amounts and Exemptions. D. SIGNATURE All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Name: Wayne W. Chang Company: Chang Consultants Mailing Address: P.O. Box 9496 Rancho Santa Fe, CA 92067 Daytime Telephone No.: 858-692-0760 Fax No.: 858-832-1402 E-Mail Address: wayne@changconsultants.com Signature of Requester (required): Date: 11/11/2016 As the community official responsible for floodplain management, I hereby acknowledge that we have received and reviewed this Letter of Map Revision (LOMR) or conditional LOMR request. Based upon the community's review, we find the completed or proposed project meets or is designed to meet all of the community floodplain management requirements, including the requirements for when fill is placed in the regulatory floodway, and that all necessary Federal, State, and local permits have been, or in the case of a conditional LOMR, will be obtained. For Conditional LOMR requests, the applicant has documented Endangered Species Act (ESA) compliance to FEMA prior to FEMA’s review of the Conditional LOMR application. For LOMR requests, I acknowledge that compliance with Sections 9 and 10 of the ESA has been achieved independently of FEMA’s process. For actions authorized, funded, or being carried out by Federal or State agencies, documentation from the agency showing its compliance with Section 7(a)(2) of the ESA will be submitted. In addition, we have determined that the land and any existing or proposed structures to be removed from the SFHA are or will be reasonably safe from flooding as defined in 44CFR 65.2(c), and that we have available upon request by FEMA, all analyses and documentation used to make this determination. Community Official’s Name and Title: Community Name: City of Oceanside Mailing Address: Daytime Telephone No.: Fax No.: E-Mail Address: Community Official’s Signature (required): Date: CERTIFICATION BY REGISTERED PROFESSIONAL ENGINEER AND/OR LAND SURVEYOR This certification is to be signed and sealed by a licensed land surveyor, registered professional engineer, or architect authorized by law to certify elevation information data, hydrologic and hydraulic analysis, and any other supporting information as per NFIP regulations paragraph 65.2(b) and as described in the MT-2 Forms Instructions. All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Certifier’s Name: Wayne W. Chang License No.: 46548 Expiration Date: 6/30/2017 Company Name: Chang Consultants Telephone No.: 858-692-0760 Fax No.: 858-832-1402 Signature: Date: 11/11/2016 E-Mail Address: wayne@changconsultants.com FEMA Form 086-0-27, (2/2011) Previously FEMA Form 81-89 MT-2 Form 1 Page 3 of 3 Ensure the forms that are appropriate to your revision request are included in your submittal. Form Name and (Number) Required if … Riverine Hydrology and Hydraulics Form (Form 2) New or revised discharges or water-surface elevations Riverine Structures Form (Form 3) Channel is modified, addition/revision of bridge/culverts, addition/revision of levee/floodwall, addition/revision of dam Coastal Analysis Form (Form 4) New or revised coastal elevations Coastal Structures Form (Form 5) Addition/revision of coastal structure Alluvial Fan Flooding Form (Form 6) Flood control measures on alluvial fans Seal (Optional) FEMA Form 086-0-27A, (2/2011) Previously FEMA Form 81-89 MT-2 Form 2 Page 1 of 3 U.S. DEPARTMENT OF HOMELAND SECURITY FEDERAL EMERGENCY MANAGEMENT AGENCY RIVERINE HYDROLOGY & HYDRAULICS FORM O.M.B No. 1660-0016 Expires February 28, 2014 PAPERWORK BURDEN DISCLOSURE NOTICE Public reporting burden for this form is estimated to average 3.5 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, Department of Homeland Security, Federal Emergency Management Agency, 1800 South Bell Street, Arlington VA 20958-3005, 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. PRIVACY ACT STATEMENT AUTHORITY: The National Flood Insurance Act of 1968, Public Law 90-448, as amended by the Flood Disaster Protection Act of 1973, Public Law 93-234. PRINCIPAL PURPOSE(S): This information is being collected for the purpose of determining an applicant's eligibility to request changes to National Flood Insurance Program (NFIP) Flood Insurance Rate Maps (FIRM). ROUTINE USE(S): The information on this form may be disclosed as generally permitted under 5 U.S.C § 552a(b) of the Privacy Act of 1974, as amended. This includes using this information as necessary and authorized by the routine uses published in DHS/FEMA/NFIP/LOMA-1 National Flood Insurance Program (NFIP); Letter of Map Amendment (LOMA) February 15, 2006, 71 FR 7990. DISCLOSURE: The disclosure of information on this form is voluntary; however, failure to provide the information requested may delay or prevent FEMA from processing a determination regarding a requested change to a NFIP Flood Insurance Rate Maps (FIRM). Flooding Source: Buena Vista Creek 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 Drainage Area (Sq. Mi.)Effective/FIS (cfs)Revised (cfs) 3.Methodology for New Hydrologic Analysis (check all that apply) Statistical Analysis of Gage Records Precipitation/Runoff Model  Specify Model: Regional Regression Equations 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 Is the hydrology for the revised flooding source(s) affected by sediment transport? Yes No If yes, then fill out Section F (Sediment Transport) of Form 3. If No, then attach your explanation.. FEMA Form 086-0-27A, (2/2011) Previously FEMA Form 81-89 MT-2 Form 2 Page 2 of 3 B. HYDRAULICS 1.Reach to be Revised Description Cross Section Water-Surface Elevations (ft.) Effective Proposed/Revised Downstream Limit* 1,500' West of Carlsbad/ Oceanside Bndry 3.675 78.02 78.05 Upstream Limit* 700' East of Carlsbad/ Oceanside Bndry 4.151 164.97 164.97 *Proposed/Revised elevations must tie-into the Effective elevations within 0.5 foot at the downstream and upstream limits of revision. 2.Hydraulic Method/Model Used: HEC-RAS, although floodplain will remain Zone A 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. We recommend that you review your HEC-2 and HEC-RAS models with CHECK-2 and CHECK-RAS.4. Models Submitted Natural Run Floodway Run Datum Duplicate Effective Model* File Name: Combined.hec Plan Name: N/A File Name: Combined.hec Plan Name: N/A NGVD 29 Corrected Effective Model* File Name: N/A Plan Name: N/A File Name: N/A Plan Name: N/A N/A Existing or Pre-Project Conditions Model File Name: Combined.hec Plan Name: N/A File Name: Combined.hec Plan Name: N/A NGVD 29 Revised or Post-Project Conditions Model File Name: BVC_CLOMR.prj Plan Name: Prop Cond File Name: BVC_CLOMR.prj Plan Name: Prop Cond NGVD 29 Other - (attach description) File Name: N/A Plan Name: N/A File Name: N/A Plan Name: N/A N/A * For details, refer to the corresponding section of the instructions. Digital Models Submitted? (Required) C. MAPPING REQUIREMENTS A certified topographic work 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 (preferred) Topographic Information: Topographic mapping is from aerial photogrammetry. Source: Project Design Consultants Date: September 19, 2006 Accuracy: Topgraphic mapping is at a 2-foot contour interval 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, at the same scale as the original, 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 on revision. Annotated FIRM and/or FBFM (Required) FEMA Form 086-0-27A, (2/2011) Previously FEMA Form 81-89 MT-2 Form 2 Page 3 of 3 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 compared to pre-project conditions. The proposed project encroaches upon a SFHA with or without BFEs established and would result in increases above 1.00 foot compared to pre-project conditions. b. Does this LOMR request cause increase in the BFE and/or SFHA compared with the effective BFEs and/or SFHA? Yes No If Yes, please attach proof of property owner notification and acceptance (if available). Elements of and examples of property owner notifications can be found in the MT-2 Form 2 Instructions. 2. 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 established. Elements and examples of regulatory floodway revision notification can be found in the MT-2 Form 2 Instructions.) 4. For CLOMR requests, please submit documentation to FEMA and the community to show that you have complied with Sections 9 and 10 of the Endangered Species Act (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. Please see the MT-2 instructions for more detail. * Not inclusive of all applicable regulatory requirements. For details, see 44 CFR parts 60 and 65. N/A See CD for letters from resource agencies indicating compliance. Note: A floodway encroachment occurs because the project is creating a new flood control channel that can convey the 100-year flow. The channel encroaches on the effective floodway in some areas. However, the effective floodway will be re-established within the proposed channel. The project will not increase the 100-year water surface elevations on off-site properties. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 1 of 11 DEPARTMENT OF HOMELAND SECURITY FEDERAL EMERGENCY MANAGEMENT AGENCY RIVERINE STRUCTURES FORM O.M.B. NO. 1660-0016 Expires February 28, 2014 PAPERWORK BURDEN DISCLOSURE NOTICE Public reporting burden for this form is estimated to average 7 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, Department of Homeland Security, Federal Emergency Management Agency, 1800 South Bell Street, Arlington, VA 20598-3005, 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. PRIVACY ACT STATEMENT AUTHORITY: The National Flood Insurance Act of 1968, Public Law 90-448, as amended by the Flood Disaster Protection Act of 1973, Public Law 93-234. PRINCIPAL PURPOSE(S): This information is being collected for the purpose of determining an applicant's eligibility to request changes to National Flood Insurance Program (NFIP) Flood Insurance Rate Maps (FIRM). ROUTINE USE(S): The information on this form may be disclosed as generally permitted under 5 U.S.C § 552a(b) of the Privacy Act of 1974, as amended. This includes using this information as necessary and authorized by the routine uses published in DHS/FEMA/NFIP/LOMA-1 National Flood Insurance Program; Letter of Map Amendment (LOMA) February 15, 2006, 71 FR 7990. DISCLOSURE: The disclosure of information on this form is voluntary; however, failure to provide the information requested may delay or prevent FEMA from processing a determination regarding a requested change to a NFIP Flood Insurance Rate Maps (FIRM). Flooding Source: Buena Vista Creek Note: Fill out one form for each flooding source studied. A. GENERAL Complete the appropriate section(s) for each Structure listed below: Channelization...............complete Section B Bridge/Culvert................complete Section C Dam...............................complete Section D Levee/Floodwall.............complete Section E Sediment Transport........complete Section F (if required) Description Of Modeled Structure 1.Name of Structure: Quarry Creek Levee Type (check one): Channelization Bridge/Culvert Levee/Floodwall Dam Location of Structure: North Bank of Buena Vista Creek Downstream Limit/Cross Section: 3.951 Upstream Limit/Cross Section: 4.075 2.Name of Structure: Quarry Creek Channelization Type (check one): Channelization Bridge/Culvert Levee/Floodwall Dam Location of Structure: Buena Vista Creek within project site Downstream Limit/Cross Section: 3.690 Upstream Limit/Cross Section: 3.938 3.Name of Structure: Quarry Creek Bridge Type (check one) Channelization Bridge/Culvert Levee/Floodwall Dam Location of Structure: West end of proposed channelization Downstream Limit/Cross Section: 3.774 Upstream Limit/Cross Section: 3.792 NOTE: FOR MORE STRUCTURES, ATTACH ADDITIONAL PAGES AS NEEDED. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 2 of 11 B. CHANNELIZATION Flooding Source: Buena Vista Creek Name of Structure: Quarry Creek Channelization 1. Hydraulic Considerations The channel was designed to carry (cfs) and/or the 100-year flood. The design elevation in the channel is based on (check one): Subcritical flow Critical flow Supercritical flow Energy grade line If there is the potential for a hydraulic jump at the following locations, check all that apply and attach an explanation of how the hydraulic jump is controlled without affecting the stability of the channel. Inlet to channel Outlet of channel At Drop Structures At Transitions Other locations (specify): At bottom of waterfall upstream of channel 2. Channel Design Plans Attach the plans of the channelization certified by a registered professional engineer, as described in the instructions. 3. Accessory Structures The channelization includes (check one): Levees [Attach Section E (Levee/Floodwall)] Drop structures Superelevated sections Transitions in cross sectional geometry Debris basin/detention basin [Attach Section D (Dam/Basin)] Energy dissipator Weir Other (Describe): 4.Sediment Transport Considerations Are the hydraulics of the channel affected by sediment transport? Yes No If yes, then fill out Section F (Sediment Transport) of Form 3. If No, then attach your explanation for why sediment transport was not considered. C. BRIDGE/CULVERT Flooding Source: Buena Vista Creek Name of Structure: Quarry Creek Bridge 1. This revision reflects (check one): Bridge/culvert not modeled in the FIS Modified bridge/culvert previously modeled in the FIS Revised analysis of bridge/culvert previously modeled in the FIS 2.Hydraulic model used to analyze the structure (e.g., HEC-2 with special bridge routine, WSPRO, HY8): HEC-RAS If different than hydraulic analysis for the flooding source, justify why the hydraulic analysis used for the flooding source could not analyze the structures. Attach justification. 3.Attach plans of the structures certified by a registered professional engineer. The plan detail and information should include the following (check the information that has been provided): Dimensions (height, width, span, radius, length) Distances Between Cross Sections Shape (culverts only) Erosion Protection Material Low Chord Elevations – Upstream and Downstream Beveling or Rounding Top of Road Elevations – Upstream and Downstream Wing Wall Angle Structure Invert Elevations – Upstream and Downstream Skew Angle Stream Invert Elevations – Upstream and Downstream Cross-Section Locations 4.Sediment Transport Considerations Are the hydraulics of the structure affected by sediment transport? Yes No If Yes, then fill out Section F (Sediment Transport) of Form 3. If no, then attach an explanation. See map pocket. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 3 of 11 D. DAM/BASIN Flooding Source: Name of Structure: 1. This request is for (check one): Existing dam/basin New dam/basin Modification of existing dam/basin 2.The dam/basin was designed by (check one): Federal agency State agency Private organization Local government agency Name of the agency or organization: 3.The Dam was permitted as (check one): Federal Dam State Dam Provide the permit or identification number (ID) for the dam and the appropriate permitting agency or organization Permit or ID number __________________ Permitting Agency or Organization _____________________________ a. Local Government Dam Private Dam Provided related drawings, specification and supporting design information. 4.Does the project involve revised hydrology? Yes No If Yes, complete the Riverine Hydrology & Hydraulics Form (Form 2). Was the dam/basin designed using critical duration storm? (must account for the maximum volume of runoff) Yes, provide supporting documentation with your completed Form 2. No, provide a written explanation and justification for not using the critical duration storm. 5.Does the submittal include debris/sediment yield analysis? Yes No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why debris/sediment analysis was not considered? 6.Does the Base Flood Elevation behind the dam/basin or downstream of the dam/basin change? Yes No If Yes, complete the Riverine Hydrology & Hydraulics Form (Form 2) and complete the table below. Stillwater Elevation Behind the Dam/Basin FREQUENCY (% annual chance)FIS REVISED 10-year (10%) 50-year (2%) 100-year (1%) 500-year (0.2%) Normal Pool Elevation 7.Please attach a copy of the formal Operation and Maintenance Plan E. LEVEE/FLOODWALL N/A FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 4 of 11 1. System Elements a.This Levee/Floodwall analysis is based on (check one): b.Levee elements and locations are (check one): earthen embankment, dike, berm, etc. Station 3.951 to 4.075 structural floodwall Station to Other (describe): Station to c.Structural Type (check one): monolithic cast-in place reinforced concrete reinforced concrete masonry block sheet piling Other (describe): Grout rap d.Has this levee/floodwall system been certified by a Federal agency to provide protection from the base flood? Yes No If Yes, by which agency? N/A upgrading of an existing levee/floodwall system a newly constructed levee/floodwall system reanalysis of an existing levee/floodwall system (grouted riprap) FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 5 of 11 e.Attach certified drawings containing the following information (indicate drawing sheet numbers): 1.Plan of the levee embankment and floodwall structures.Sheet Numbers: 1 and 2 2.A profile of the levee/floodwall system showing the Base Flood Elevation (BFE), levee and/or wall crest and foundation, and closure locations for the total levee system.Sheet Numbers: 2 and HEC-RAS output 3.A profile of the BFE, closure opening outlet and inlet invert elevations, type and size of opening, and kind of closure.Sheet Numbers: N/A. No closures 4.A layout detail for the embankment protection measures.Sheet Numbers: 1 and 2 5.Location, layout, and size and shape of the levee embankment features, foundation treatment, Floodwall structure, closure structures, and pump stations.Sheet Numbers: 1 and 2 2. Freeboard a.The minimum freeboard provided above the BFE is: Riverine 3.0 feet or more at the downstream end and throughout Yes No 3.5 feet or more at the upstream end Yes No 4.0 feet within 100 feet upstream of all structures and/or constrictions Yes No Coastal 1.0 foot above the height of the one percent wave associated with the 1%-annual-chance stillwater surge elevation or maximum wave runup (whichever is greater). Yes No 2.0 feet above the 1%-annual-chance stillwater surge elevation Yes No Please note, occasionally exceptions are made to the minimum freeboard requirement. If an exception is requested, attach documentation addressing Paragraph 65.10(b)(1)(ii) of the NFIP Regulations. If No is answered to any of the above, please attach an explanation. b.Is there an indication from historical records that ice-jamming can affect the BFE? Yes No If Yes, provide ice-jam analysis profile and evidence that the minimum freeboard discussed above still exists. 3. Closures a.Openings through the levee system (check one): exists does not exist If opening exists, list all closures: Channel Station Left or Right Bank Opening Type Highest Elevation for Opening Invert Type of Closure Device N/A (Extend table on an added sheet as needed and reference) Note: Geotechnical and geologic data In addition to the required detailed analysis reports, data obtained during field and laboratory investigations and used in the design analysis for the following system features should be submitted in a tabulated summary form. (Reference U.S. Army Corps of Engineers [USACE] EM-1110-2-1906 Form 2086.) Sheet numbers from Reclamation Plans. N/A. No structures or constrictions. N/A. Not in coastal zone. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 6 of 11 4. Embankment Protection a.The maximum levee slope land side is: 2:1 (horizontal:vertical) b.The maximum levee slope flood side is: 2:1 (horizontal:vertical) c.The range of velocities along the levee during the base flood is: 5.5 fps (min.) to 18.9 fps (max.) d.Embankment material is protected by (describe what kind): Grouted riprap e.Riprap Design Parameters (check one): Velocity Tractive stress Attach references Reach Sideslope Flow Depth Velocity Curve or Straight Stone Riprap Depth of Toedown D100 D50 Thickness Sta 3.951 to 4.075 2:1 16' 18.9 Strght 2.9' 2.3' 3.4' Sta to Sta to Sta to Sta to Sta to (Extend table on an added sheet as needed and reference each entry) f.Is a bedding/filter analysis and design attached? Yes No g.Describe the analysis used for other kinds of protection used (include copies of the design analysis): Grouted riprap to conform to Caltrans "Standard Specifications" Section 7-5. Attach engineering analysis to support construction plans. 5.Embankment And Foundation Stability a.Identify locations and describe the basis for selection of critical location for analysis: High point of levee fill. Just west of HEC-RAS station 4.041. D-D' on Geologic Map in soils report. Overall height: Sta.: D-D', height 52 ft. Limiting foundation soil strength: Strength  = 30 degrees, c = 300 psf Slope: SS = 2 (h) to 1 (v) (Repeat as needed on an added sheet for additional locations) b.Specify the embankment stability analysis methodology used (e.g., circular arc, sliding block, infinite slope, etc.): Circular arc c.Summary of stability analysis results: (H:V)max. max.On bedrock. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 7 of 11 E. LEVEE/FLOODWALL (CONTINUED) 5.Embankment And Foundation Stability (continued) Case Loading Conditions Critical Safety Factor Criteria (Min.) I End of construction 3.4 1.3 II Sudden drawdown 2.8 1.0 III Critical flood stage 1.8 1.4 IV Steady seepage at flood stage 1.65 1.4 VI Earthquake (Case I) 2.5 1.0 (Reference: USACE EM-1110-2-1913 Table 6-1) d.Was a seepage analysis for the embankment performed? Yes No If Yes, describe methodology used: Finite-element e.Was a seepage analysis for the foundation performed? Yes No f.Were uplift pressures at the embankment landside toe checked? Yes No g.Were seepage exit gradients checked for piping potential? Yes No h.The duration of the base flood hydrograph against the embankment is 24 hours. Attach engineering analysis to support construction plans. 6.Floodwall And Foundation Stability a.Describe analysis submittal based on Code (check one): UBC (1988) Other (specify): b.Stability analysis submitted provides for: Overturning Sliding If not, explain: c.Loading included in the analyses were: Lateral earth @ PA = psf; Pp = psf Surcharge-Slope @ , surface psf Wind @ Pw = psf Seepage (Uplift); Earthquake @ Peq = %g 1%-annual-chance significant wave height: ft. 1%-annual-chance significant wave period: sec. d.Summary of Stability Analysis Results: Factors of Safety. Itemize for each range in site layout dimension and loading condition limitation for each respective reach. Loading Condition Criteria (Min) Sta To Sta To Overturn Sliding Overturn Sliding Overturn Sliding Dead & Wind 1.5 1.5 Dead & Soil 1.5 1.5 Dead, Soil, Flood, & Impact 1.5 1.5 Dead, Soil, & Seismic 1.3 1.3 Geotechnical analyses included in Appendix A. N/A. The project does not propose a floodwall. Levee is earthen embankment on existing stable ground surface. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 8 of 11 (Ref: FEMA 114 Sept 1986; USACE EM 1110-2-2502) Note: (Extend table on an added sheet as needed and reference) E. LEVEE/FLOODWALL (CONTINUED) 6.Floodwall And Foundation Stability (continued) e.Foundation bearing strength for each soil type: Bearing Pressure Sustained Load (psf) Short Term Load (psf) Computed design maximum Maximum allowable N/A FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 9 of 11 f.Foundation scour protection is, is not provided. If provided, attach explanation and supporting documentation: Attach engineering analysis to support construction plans. 7. Settlement a.Has anticipated potential settlement been determined and incorporated into the specified construction elevations to maintain the established freeboard margin? Yes No b.The computed range of settlement is 0 ft. to 0.17 ft. c.Settlement of the levee crest is determined to be primarily from : Foundation consolidation Embankment compression Other (Describe): d.Differential settlement of floodwalls has has not been accommodated in the structural design and construction. Attach engineering analysis to support construction plans. 8. Interior Drainage a.Specify size of each interior watershed: Draining to pressure conduit: N/A acres Draining to ponding area: N/A acres b. Relationships Established Ponding elevation vs. storage Yes No Ponding elevation vs. gravity flow Yes No Differential head vs. gravity flow Yes No c.The river flow duration curve is enclosed: Yes No d.Specify the discharge capacity of the head pressure conduit: N/A cfs e.Which flooding conditions were analyzed? Gravity flow (Interior Watershed) Yes No Common storm (River Watershed) Yes No Historical ponding probability Yes No Coastal wave overtopping Yes No If No for any of the above, attach explanation. e.Interior drainage has been analyzed based on joint probability of interior and exterior flooding and the capacities of pumping and outletfacilities to provide the established level of flood protection. Yes No If No, attach explanation. g.The rate of seepage through the levee system for the base flood is N/A cfs h.The length of levee system used to drive this seepage rate in item g: N/A ft. E. LEVEE/FLOODWALL (CONTINUED) 8.Interior Drainage (continued) i.Will pumping plants be used for interior drainage? Yes No If Yes, include the number of pumping plants: N/A For each pumping plant, list: N/A Interior drainage will not pond against levee. It will be conveyed around levee. Project is not subject to coastal waves. Interior drainage will not be conveyed through levee, so there is no need for coincident flow analysis. FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 10 of 11 The number of pumps Plant #1 Plant #2 N/A The ponding storage capacity The maximum pumping rate The maximum pumping head The pumping starting elevation The pumping stopping elevation Is the discharge facility protected? Is there a flood warning plan? How much time is available between warning and flooding? Will the operation be automatic? Yes No If the pumps are electric, are there backup power sources? Yes No (Reference: USACE EM-1110-2-3101, 3102, 3103, 3104, and 3105) Include a copy of supporting documentation of data and analysis. Provide a map showing the flooded area and maximum ponding elevations for all interior watersheds that result in flooding. 9. Other Design Criteria a. The following items have been addressed as stated: Liquefaction is is not a problem Hydrocompaction is is not a problem Heave differential movement due to soils of high shrink/swell is is not a problem b. For each of these problems, state the basic facts and corrective action taken: N/A Attach supporting documentation c. If the levee/floodwall is new or enlarged, will the structure adversely impact flood levels and/or flow velocities floodside of the structure? Yes No Attach supporting documentation d. Sediment Transport Considerations: Was sediment transport considered? Yes No If Yes, then fill out Section F (Sediment Transport). If No, then attach your explanation for why sediment transport was not considered. 10. Operational Plan And Criteria a. Are the planned/installed works in full compliance with Part 65.10 of the NFIP Regulations? Yes No b. Does the operation plan incorporate all the provisions for closure devices as required in Paragraph 65.10(c)(1) of the NFIP regulations? Yes No c. Does the operation plan incorporate all the provisions for interior drainage as required in Paragraph 65.10(c)(2) of the NFIP regulations? Yes No If the answer is No to any of the above, please attach supporting documentation. E. LEVEE/FLOODWALL (CONTINUED) Proposed condition HEC-RAS shows levee will not raise 100-year water surface elevations above existing condition HEC-2 water surface elevations. x x N/A FEMA Form 086-0-27B, (2/2011) Previously FEMA Form 81-89B MT-2 Form 3 Page 11 of 11 11. Maintenance Plan Please attach a copy of the fomal maintenance plan for the levee/floodwall 12.Operations and Maintenance Plan Please attach a copy of the formal Operations and Maintenance Plan for the levee/floodwall. CERTIFICATION OF THE LEVEE DOCUMENTION This certification is to be signed and sealed by a licensed registered professional engineer authorized by law to certify elevation information data, hydrologic and hydraulic analysis, and any other supporting information as per NFIP regulations paragraph 65.10(e) and as described in the MT-2 Forms Instructions. All documents submitted in support of this request are correct to the best of my knowledge. I understand that any false statement may be punishable by fine or imprisonment under Title 18 of the United States Code, Section 1001. Certifier’s Name: Wayne W. Chang License No.: 46548 Expiration Date: 6/30/15 Company Name: Chang Consultants Telephone No.: (858) 692-0760 Fax No.: (858) 832-1402 Signature: Date: 2/23/2014 E-Mail Address: wayne@changconsultants.com F. SEDIMENT TRANSPORT Flooding Source: N/A Name of Structure: N/A If there is any indication from historical records that sediment transport (including scour and deposition) can affect the Base Flood Elevation (BFE); and/or based on the stream morphology, vegetative cover, development of the watershed and bank conditions, there is a potential for debris and sediment transport (including scour and deposition) to affect the BFEs, then provide the following information along with the supporting documentation: Sediment load associated with the base flood discharge: Volume acre-feet Debris load associated with the base flood discharge: Volume acre-feet Sediment transport rate (percent concentration by volume) Method used to estimate sediment transport: Most sediment transport formulas are intended for a range of hydraulic conditions and sediment sizes; attach a detailed explanation for using the selected method. Method used to estimate scour and/or deposition: Method used to revise hydraulic or hydrologic analysis (model) to account for sediment transport: Please note that bulked flows are used to evaluate the performance of a structure during the base flood; however, FEMA does not map BFEs based on bulked flows. If a sediment analysis has not been performed, an explanation as to why sediment transport (including scour and deposition) will not affect the BFEs or structures must be provided. O&M is described in report text. LEVEE MAINTENANCE PLAN QUARRY CREEK VESTING TENTATIVE MAP (C.T. 11-04) March 2, 2015 Wayne W. Chang, MS, PE 46548 Chang Civil Engineering ◦ Hydrology ◦ Hydraulics ◦ Sedimentation P.O. Box 9496 Rancho Santa Fe, CA 92067 (858) 692-0760 TABLE OF CONTENTS Introduction ........................................................................................................................................1 Levee Objectives, Design, and Construction .....................................................................................3 Levee Operations, Inspections, Maintenance, and Reporting ...........................................................4 Responsible Parties ............................................................................................................................6 Certification .......................................................................................................................................7 Owner’s Certification ........................................................................................................................7 Site Map .............................................................................................................................................8 ATTACHMENTS A. Grading Plans Outlining Levee B. Inspection Form C. Quarry Creek Shopping Center Levee Maintenance Plan D. Levee Maintenance Agreement 1 LEVEE MAINTENANCE PLAN SOUTH COAST MATERIALS QUARRY INTRODUCTION This Levee Maintenance Plan has been prepared for the levee that is part of the post-mining reclamation for Hanson Aggregates Pacific Southwest’s South Coast Materials Quarry. The project site is south of Haymar Drive and west of College Boulevard in the cities of Carlsbad and Oceanside, California (see the Vicinity Map below and the Site Map on page 8). The site historically contained a quarry and associated operations. The easterly portion of the site was reclaimed a few years ago and developed with retail uses (Quarry Creek Shopping Center). Hanson was required to reclaim the remainder of the site, which is primarily in the city of Carlsbad (100.13 acres) with a small northeastern portion (4.10 acres) in the city of Oceanside. Presidio Cornerstone QC, LLC (Cornerstone) is planning to develop the site after reclamation in accordance with Vesting Tentative Map Carlsbad Tract 11-04. The Cornerstone development is a mixed-use project containing opening space, medium to high density residential development, and community facilities. 2 The reclamation consists of flood control improvements and pad grading. The grading plan for reclamation in the City of Carlsbad is Drawing No. 470-5A, and the grading plan for reclamation in the City of Oceanside is Drawing No. G11-00002. Buena Vista Creek flows in a westerly direction through the middle of the site. Reclamation will enlarge a portion of the creek channel to a 150-foot wide bottom with 2.5:1 (horizontal:vertical) side slopes. Seven riprap drop structures will be incorporated along the creek bed to reduce the channel gradient and flow velocities. The reclamation will include large mass graded pads along the north and south sides of the channel. El Salto Falls is near the easterly project boundary just upstream of the channelization reach. The main creek channel at and above El Salto Falls is higher than the mass graded pad to the north creating a levee condition. The Vesting Tentative Map will not alter the creek except for a proposed vehicular bridge at the downstream end of the channelization along the westerly most drop structure. Hydraulic analyses indicate that the bridge has a small impact on water surface elevations and the freeboard requirements will not be compromised. The bridge will not impact the levee. Portions of the site in both Oceanside and Carlsbad will be protected by a levee as defined by the Federal Emergency Management Agency (FEMA). Title 44, Part 65.10 of the Code of Federal Regulations (CFR) outlines FEMA’s levee requirements. The requirements state that “Levee systems must be maintained in accordance with an officially adopted maintenance plan . . . .” The maintenance activities must be under jurisdiction of a public agency. The CFR states that the maintenance plan “. . . must document the formal procedure that ensures that the stability, height, and overall integrity of the levee and its associated structures and systems are maintained. At a minimum, maintenance plans shall specify the maintenance activities to be performed, the frequency of their performance, and the person by name or title responsible for their performance.” This Levee Maintenance Plan (LMP) outlines the levee design, objectives, and construction as well as operations, inspections, maintenance, and reporting. The LMP implementation and funding will be the responsibility of the landowner or their designated representative. Ultimately, the Quarry Creek development’s Homeowner’s Association will be responsible for ongoing maintenance. This LMP has been prepared for the levee within the cities of Carlsbad and Oceanside. The City of Oceanside will transfer their jurisdictional requirements to the City of Carlsbad (see the Levee Maintenance Agreement in Attachment D). The Carlsbad portion is shown on sheet 5 of the City of Carlsbad Grading Plan Drawing No. 470-5A, which is included in Attachment A. The Oceanside portion is shown on sheet 2 of the City of Oceanside Grading Plan Drawing No. G11-00002, which is also included in Attachment A. The levee limits in Carlsbad and Oceanside have been added to the appropriate grading plans in Attachment A. The top of the levee is 20-feet wide and allows for access along much of the levee. When the Quarry Creek Shopping Center was constructed, an LMP was approved by the City of Oceanside for a levee along the south side of Buena Vista Creek. The LMP is included in Attachment C for reference. The City of Oceanside assumed the jurisdictional role for the levee. 3 LEVEE OBJECTIVES, DESIGN, AND CONSTRUCTION Objectives The primary objective of the levee is to prevent 100-year flood inundation of the reclaimed pad north of Buena Vista Creek. Under pre-reclamation conditions, a portion of the north bank of Buena Vista Creek at and near El Salto Falls cannot contain the 100-year flow. As a result, flows approaching the 100-year magnitude will overtop the bank and inundate the pad area immediately to the north, which is within the cities of Carlsbad and Oceanside. A levee is required to protect against 100-year flood inundation of the pad and any potential future development. The levee will consist of an earthen embankment lined with grouted riprap along the northerly creek bank. Design Additional objectives are described in FEMA’s design criteria published in Title 44, Part 65.10 of the Code of Federal Regulations (CFR). The following outlines the CFR design criteria and how each item has been met. Freeboard – The levee has been designed to provide at least 3 feet of freeboard above the 100-year water surface elevations. An additional one-half foot is provided at the upstream end of the levee. The freeboard was based on 100-year hydraulic analyses contained in Chang Consultants’ May 26, 2011, Drainage Report for South Coast Materials Quarry (SUP 07-03, SWMP 11-03, DWG 470-5A). Closures – The interior (landward) drainage will flow southerly into the creek from a storm drain outfall downstream (west) of the levee, rather than through the levee. The outfall location into the creek is not in a levee condition. Therefore, closure devices are not needed. Embankment protection – The levee embankment will be founded on bedrock. Since the embankment will be along the steep falls area, the flow velocities can be high. Grouted riprap will be constructed along the creek-side to resist the high flow velocities. A minimum 2-foot layer of soil lined with Pyramat High Performance Turf Reinforcement Mat will be placed over the grouted riprap to allow planting. While the 2-foot soil layer and mat can erode, the grouted riprap will prevent erosion from propagating further. Embankment and foundation stability – Geocon, Incorporated has prepared stability and seepage analyses (March 4, 2011, Quarry Creek, Carlsbad, California, Slope Stability Analysis for FEMA Levee, and March 23, 2011, Quarry Creek, Carlsbad, California, Additional Slope Stability Analysis for FEMA Levee) verifying that the levee meets the required factors-of-safety. Settlement – Geocon, Incorporated has analyzed settlement and determined that it will be 2 inches or less. The levee height was designed to provide the necessary freeboard under the maximum settlement condition. 4 Interior drainage – Interior drainage will not pond against the levee. It will be conveyed westerly beyond the levee and discharge into Buena Vista Creek by a storm drain pipe. Other design criteria – the project is not subject to unique situations requiring additional engineering analyses other than the hydraulic and geotechnical analyses that have been prepared for the grading permit. Operation plans and criteria – the project does not include closures or interior drainage systems that require an operation plan nor is it subject to emergency operations, a flood warning system, backup systems, or manual operation. Surface runoff will not be conveyed through the levee. The landward drainage system is a gravity system and conveys interior runoff away from the levee into Buena Vista Creek. Maintenance plans and criteria – Since the levee will be constructed of natural materials without closure systems, interior drainage systems, mechanical devices, etc., the maintenance primarily involves routine inspections to ensure the levee stability. The Levee Maintenance Plan is described in the following section. Construction Levee construction is the responsibility of Hanson Aggregates Pacific Southwest, Inc. as part of their reclamation obligation. Hanson Aggregates retained a construction management company, J.T. Kruer & Company, to monitor and oversee the overall, including levee, construction. The engineer of work, Chang Consultants, and geotechnical consultant, Geocon, Incorporated, will perform construction observation and provide as-built plans and reports. LEVEE OPERATIONS, INSPECTIONS, MAINTENANCE, AND REPORTING Operations The levee will consist of a soil and riprap-lined embankment used to resist hydraulic forces along the north bank of Buena Vista Creek. There are no required closure or other mechanical devices, backup systems, or emergency warning systems. Therefore, the levee is a passive system and an operations plan is not needed. Inspections and Maintenance Annual visual inspections by a qualified engineer familiar with levee criteria shall be performed at the beginning of each rainy season (prior to October 1) to assess the levee condition. In addition to regular annual inspections, the levee will be inspected after any unusual occurrence, such as an earthquake or 10-year or greater storm event. The purpose of an inspection is to detect conditions that might adversely affect the levee performance. Quick response to development of potentially adverse conditions will maintain the levee in good condition and performing as designed and constructed. Since an important aspect of the inspections is assessing changes that occur over time, inspection records should be accurate and complete so that a thorough documentation of conditions observed during all inspections is available. 5 Before making a regular inspection, the inspector shall review this plan and the previous inspection reports to be thoroughly familiar with past unusual or abnormal conditions and be aware of remedial measures taken to correct adverse conditions. Inspections shall identify conditions as follows:  Review vegetative growth on the levee. Large vegetation (trees, brush, etc.) whose root system could impact the levee stability shall be removed, e.g., large roots that could impact the grouted riprap revetment. An environmental consultant shall be contacted for permitting requirements prior to removal of habitat on the creek-side of the levee.  The creek-side of the levee will be lined with Pyramat High Performance Turf Reinforcement Mat. This mat supports vegetation while providing additional protection against high flow velocities along the levee face. The mat and underlying soil are allowed to washout during high flow events. A grouted riprap revetment buried 2 feet below the mat will prevent further erosion. If the riprap revetment is exposed, the grouted riprap shall be inspected for displacement, cracking, or other damage on the surface and repairs shall be made, as needed. If the turf reinforcement mat or underlying soil shows signs of detachment, deterioration, or erosion, recommendations shall be made for reinstalling the mat and/or soil. An environmental consultant shall be contacted for permitting requirements prior to reinstallation.  Identify settlement or movement of the levee. If settlement is observed, a geotechnical consultant shall be contacted to provide an evaluation and recommendations, as needed. In the event of uncertainty related to potential minor settlement, a field survey shall be performed and compared to the as-built drawings to verify the settlement.  Identify rills, gullying, or other erosion on the levee surface. Install additional erosion control best management practices, vegetation, or perform regrading. Erosion is often the result of concentrated surface water flow at a location. In this case, measures such as adjusting grades along the levee crest can be taken to more evenly distribute the overland flow. After surface drainage has been improved, the eroded areas, if more than 6 inches deep, shall be backfilled with compacted fill. Sloughs, slides, or subsidence are indicative of instability and will be carefully evaluated by a geotechnical consultant, who shall provide repair recommendations.  Identify seepage through the levee. If seepage is noted on the landward side of the levee, a geotechnical consultant shall be contacted to provide an evaluation and recommendations, as needed.  Identify rodent damage such as burrows or mounds. Rodents shall be controlled through poisoning or trapping by authorized personnel.  Verify proper functioning of the irrigation system on the levee. The irrigation system will be routinely maintained throughout the year by the on-site landscaping personnel. The 6 landscaping personnel can be contacted regarding the functioning, repairs, or issues associated with the irrigation system during the past year. Reporting An inspection report shall be completed by a qualified engineer following each annual inspection and submitted to the City of Carlsbad, City of Oceanside, and levee owner (ultimately the Quarry Creek development’s Homeowner’s Association). Photo documentation taken from identical locations each year shall be included in the report to allow an ongoing comparison of the levee condition. The inspection form included in Attachment B of this manual shall be completed for each inspection. Plan drawings or other supplemental information showing the extent of seepage, unusual settlement, and other conditions that may be significant to the performance and safety of the levee will be prepared and filed with the inspection report, as needed. Videos may be useful to document unusual or abnormal conditions. If supplemental analyses are performed as recommended following an inspection, a follow-up report will be prepared and submitted to the City of Carlsbad and levee owner. RESPONSIBLE PARTIES Funding for construction, ongoing inspections, repairs, and reporting are initially the responsibility of Hanson Aggregates Pacific Southwest, Inc. The City of Carlsbad will ensure that a maintenance agreement is in place for the levee responsibilities. Maintenance obligations may be transferred to a future landowner, but the transfer must maintain all inspection, repair, reporting, and funding obligations. An inspection shall be performed prior to transfer and required maintenance shall be performed prior to the transfer. Ultimate execution of this Levee Maintenance Plan lies with the City of Carlsbad. It is their duty to monitor the performance of the party responsible for maintenance and to ensure that the party performs the necessary maintenance. ATTACHMENT A GRADING PLANS OUTLINING LEVEE ATTACHMENT B INSPECTION FORM SOUTH COAST MATERIALS QUARRY LEVEE INSPECTION RECORD Inspection Date: ______________________ Inspector(s) / Company / Phone: _______________________________________ _______________________________________ _______________________________________ _______________________________________ Reason for Inspection: ___ Scheduled ___ Following Unusual Occurrence (specify) _____________________ Photographs and Photo Location Map Attached: ______ Yes ______ No Previous Inspection Reports and Levee Maintenance Plan Reviewed: ______ Yes ______ No Previously Recommended Corrective Measures Undertaken: ______ Yes ______ No INSPECTION ITEMS: Outboard (Buena Vista Creek-Side) Embankment Slope  Vegetation ______________________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Pyramat High Performance Turf Reinforcement Mat _____________________________ ________________________________________________________________________ ________________________________________________________________________  Soil o Movement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Settlement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Rills, gullies, erosion ___________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Seepage _____________________________________________________________ ____________________________________________________________________ ____________________________________________________________________  Grouted 1/2-Ton Riprap (if exposed) _________________________________________ ________________________________________________________________________ ________________________________________________________________________  Rodents (burrows, mounds) _________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Irrigation System _________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Interior (Landward) Embankment Slope  Vegetation ______________________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Soil o Movement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Settlement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Rills, gullies, erosion ___________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Seepage _____________________________________________________________ ____________________________________________________________________ ____________________________________________________________________  Rodents (burrows, mounds) _________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Irrigation System _________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Embankment Crest  Vegetation ______________________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Soil o Movement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Settlement ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ o Rills, gullies, erosion ___________________________________________________ ____________________________________________________________________ ____________________________________________________________________  Rodents (burrows, mounds) _________________________________________________ ________________________________________________________________________ ________________________________________________________________________  Irrigation System _________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Additional Inspection Findings or Tasks Performed (surveying, mapping, video, etc.), if applicable ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ RECOMMENDATIONS: Corrective Measures ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Additional Investigations Recommended to be Performed by Others (geotechnical consultant, environmental consultant, etc.) ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Other Recommendations ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ATTACHMENT C QUARRY CREEK SHOPPING CENTER LEVEE MAINTENANCE PLAN ATTACHMENT D LEVEE MAINTENANCE AGREEMENT APPENDIX B As-Built HEC-RAS Analysis HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 4.151 100-Year FP 8000.00 152.70 164.90 165.28 0.002594 4.581643.60 231.28 0.25Reach-1 4.151 10-Year 1700.00 152.70 159.84 159.97 0.002320 2.86 601.67 146.71 0.21Reach-1 4.151 50-Year 5100.00 152.70 162.96 163.25 0.002827 4.19 1206.68 220.40 0.25Reach-1 4.151 500-Year 18000.00 152.70 170.09 170.72 0.002085 5.33 2920.39 261.94 0.23Reach-1 4.127 100-Year FP 8000.00 152.80 164.38 164.81 0.007581 5.421546.02 218.70 0.33Reach-1 4.127 10-Year 1700.00 152.80 159.26 159.45 0.011027 3.58 493.27 175.41 0.34Reach-1 4.127 50-Year 5100.00 152.80 162.39 162.72 0.008492 4.82 1118.91 210.09 0.33Reach-1 4.127 500-Year 18000.00 152.80 169.67 170.33 0.006290 6.79 2761.78 241.55 0.32Reach-1 4.103 100-Year FP 8000.00 152.00 162.26 163.34 0.018886 8.69977.83 138.73 0.52Reach-1 4.103 10-Year 1700.00 152.00 157.14 157.56 0.021435 5.20 333.41 104.12 0.48Reach-1 4.103 50-Year 5100.00 152.00 160.30 161.13 0.020073 7.57 713.31 130.85 0.51Reach-1 4.103 500-Year 18000.00 152.00 167.29 169.03 0.017475 11.28 1758.48 177.04 0.53Reach-1 4.075 100-Year FP 8000.00 148.80 159.96 161.09 0.012707 7.71958.17 126.35 0.43Reach-1 4.075 10-Year 1700.00 148.80 154.58 154.96 0.014833 4.96 346.58 98.96 0.41Reach-1 4.075 50-Year 5100.00 148.80 157.92 158.75 0.013436 6.80 710.53 117.35 0.43Reach-1 4.075 500-Year 18000.00 148.80 165.07 166.91 0.012058 9.90 1707.74 179.87 0.45Reach-1 4.059 100-Year FP 8000.00 146.50 156.25 156.25 159.32 0.031919 14.35 579.71 94.99 0.92Reach-1 4.059 10-Year 1700.00 146.50 151.32 151.32 152.72 0.052475 9.47 179.48 65.02 1.00Reach-1 4.059 50-Year 5100.00 146.50 154.40 154.40 156.85 0.036505 12.69 411.95 85.76 0.94Reach-1 4.059 500-Year 18000.00 146.50 161.77 160.93 165.49 0.01934616.14 1187.64 124.72 0.79Reach-1 4.041 100-Year FP 8000.00 141.40 153.04 153.04 156.27 0.022672 16.22 563.21 98.01 0.84Reach-1 4.041 10-Year 1700.00 141.40 147.05 147.05 148.84 0.031009 11.61 161.45 45.45 0.87Reach-1 4.041 50-Year 5100.00 141.40 151.00 151.00 153.64 0.023895 14.62 399.38 74.33 0.84Reach-1 4.041 500-Year 18000.00 141.40 162.42 157.68 164.02 0.00502911.37 1802.93 155.62 0.44Reach-1 4.019 100-Year FP 8000.00 136.50 149.12 149.12 153.82 0.015536 17.82 487.37 56.97 0.92Reach-1 4.019 10-Year 1700.00 136.50 141.49 141.49 143.59 0.025907 11.61 146.40 35.36 1.01Reach-1 4.019 50-Year 5100.00 136.50 146.11 146.11 149.95 0.018425 15.90 334.52 46.42 0.95Reach-1 4.019 500-Year 18000.00 136.50 155.81 155.81 162.60 0.01353722.50 969.16 87.47 0.93Reach-1 4.002 100-Year FP 8000.00 128.00 142.73 142.73 146.92 0.013232 17.78 540.79 66.12 0.87Reach-1 4.002 10-Year 1700.00 128.00 134.79 134.79 137.04 0.022199 12.12 144.25 34.33 0.96Reach-1 4.002 50-Year 5100.00 128.00 139.70 139.70 143.28 0.015346 15.99 361.75 51.49 0.90 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 4.002 500-Year 18000.00 128.00 147.80 147.80 155.06 0.01618324.54 944.46 92.27 1.02Reach-1 3.994 100-Year FP 8000.00 111.70 125.71 125.71 131.36 0.026925 19.08 419.30 37.24 1.00Reach-1 3.994 10-Year 1700.00 111.70 117.05 117.05 119.46 0.028478 12.48 136.26 28.45 1.00Reach-1 3.994 50-Year 5100.00 111.70 122.36 122.36 126.83 0.027165 16.97 300.46 33.65 1.00Reach-1 3.994 500-Year 18000.00 111.70 135.01 135.01 142.62 0.01814722.39 847.14 62.05 0.89Reach-1 3.982 100-Year FP 8000.00 100.00 108.90 108.90 112.44 0.019925 15.28 539.12 77.84 0.97Reach-1 3.982 10-Year 1700.00 100.00 103.94 103.94 105.33 0.027981 9.48 179.33 64.77 1.00Reach-1 3.982 50-Year 5100.00 100.00 106.97 106.97 109.66 0.021704 13.26 392.07 74.12 0.98Reach-1 3.982 500-Year 18000.00 100.00 114.02 114.02 119.80 0.01685819.77 961.62 87.65 0.98Reach-1 3.968 100-Year FP 8000.00 94.00 106.83 107.42 0.007498 6.16 1308.12 168.48 0.33Reach-1 3.968 10-Year 1700.00 94.00 100.02 100.23 0.009925 3.66 464.97 141.49 0.33Reach-1 3.968 50-Year 5100.00 94.00 104.28 104.70 0.007701 5.20 984.37 158.49 0.32Reach-1 3.968 500-Year 18000.00 94.00 114.10 115.06 0.006215 7.94 2307.44 202.44 0.33Reach-1 3.951 100-Year FP 8000.00 90.00 103.72 106.17 0.021540 11.41653.16 100.39 0.56Reach-1 3.951 10-Year 1700.00 90.00 99.07 99.46 0.007474 4.99 341.32 59.32 0.31Reach-1 3.951 50-Year 5100.00 90.00 102.30 103.68 0.015006 8.81 551.32 92.73 0.46Reach-1 3.951 500-Year 18000.00 90.00 107.71 107.71 113.50 0.032453 16.75 967.06 121.45 0.72Reach-1 3.938 100-Year FP 8000.00 90.00 101.20 101.20 103.95 0.051683 13.73 616.08 149.30 0.81Reach-1 3.938 10-Year 1700.00 90.00 96.80 96.80 98.20 0.063641 9.76 192.40 91.13 0.80Reach-1 3.938 50-Year 5100.00 90.00 99.78 99.78 101.84 0.052849 12.40458.42 138.75 0.79Reach-1 3.938 500-Year 18000.00 90.00 105.25 105.25 109.70 0.038013 15.08 1116.04 175.45 0.73Reach-1 3.923 100-Year FP 8000.00 90.00 95.96 96.80 0.009974 7.33 1091.85 212.89 0.57Reach-1 3.923 10-Year 1700.00 90.00 91.64 91.64 92.37 0.047043 6.84 248.57 172.90 1.01Reach-1 3.923 50-Year 5100.00 90.00 94.35 95.05 0.012444 6.72 758.78 199.14 0.61Reach-1 3.923 500-Year 18000.00 90.00 99.67 101.03 0.008831 9.36 1923.79 236.25 0.58Reach-1 3.922 100-Year FP 8000.00 88.00 96.20 96.65 0.002133 5.39 1482.99 221.09 0.37Reach-1 3.922 10-Year 1700.00 88.00 91.85 91.98 0.001630 2.87 592.21 186.88 0.28Reach-1 3.922 50-Year 5100.00 88.00 94.59 94.90 0.001958 4.49 1135.41209.34 0.34Reach-1 3.922 500-Year 18000.00 88.00 99.95 100.86 0.002633 7.67 2347.47 240.61 0.43Reach-1 3.920 100-Year FP 8000.00 88.00 96.22 96.61 0.003141 5.05 1584.87 226.30 0.34 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 3.920 10-Year 1700.00 88.00 91.85 91.95 0.002241 2.60 652.67 196.26 0.25Reach-1 3.920 50-Year 5100.00 88.00 94.60 94.86 0.002863 4.16 1224.74218.29 0.31Reach-1 3.920 500-Year 18000.00 88.00 99.98 100.80 0.004035 7.29 2468.63 243.64 0.40Reach-1 3.914 100-Year FP 8000.00 88.00 96.04 96.44 0.009105 5.09 1572.81 229.26 0.34Reach-1 3.914 10-Year 1700.00 88.00 91.72 91.83 0.007067 2.68 633.71 200.58 0.27Reach-1 3.914 50-Year 5100.00 88.00 94.43 94.71 0.008377 4.21 1211.54220.87 0.32Reach-1 3.914 500-Year 18000.00 88.00 99.75 100.58 0.011591 7.33 2455.68 246.64 0.41Reach-1 3.905 100-Year FP 8000.00 88.00 93.52 93.52 95.60 0.032835 11.58 690.67 165.83 1.00Reach-1 3.905 10-Year 1700.00 88.00 90.19 90.19 91.13 0.043342 7.78 218.51 117.61 1.01Reach-1 3.905 50-Year 5100.00 88.00 92.25 92.25 93.92 0.035336 10.36 492.31 147.76 1.00Reach-1 3.905 500-Year 18000.00 88.00 96.67 96.67 99.62 0.029258 13.78 1306.91 223.62 1.00Reach-1 3.903 100-Year FP 8000.00 86.20 92.72 92.72 94.91 0.018490 11.87 674.06 156.07 1.01Reach-1 3.903 10-Year 1700.00 86.20 89.09 89.09 90.12 0.023834 8.16 208.45 102.75 1.01Reach-1 3.903 50-Year 5100.00 86.20 91.34 91.34 93.13 0.019550 10.73 475.20 133.48 1.00Reach-1 3.903 500-Year 18000.00 86.20 96.48 96.01 99.08 0.013265 12.93 1392.53 222.16 0.91Reach-1 3.902 100-Year FP 8000.00 86.00 93.32 94.37 0.007102 8.23 971.72 189.96 0.64Reach-1 3.902 10-Year 1700.00 86.00 89.11 89.57 0.007906 5.45 311.78 122.78 0.60Reach-1 3.902 50-Year 5100.00 86.00 91.73 92.59 0.007740 7.43 686.69 167.24 0.65Reach-1 3.902 500-Year 18000.00 86.00 97.15 98.73 0.006100 10.09 1784.77 231.65 0.64Reach-1 3.900 100-Year FP 8000.00 86.00 93.62 94.16 0.004955 5.91 1353.31 207.74 0.41Reach-1 3.900 10-Year 1700.00 86.00 89.28 89.43 0.003686 3.14 541.64 172.71 0.31Reach-1 3.900 50-Year 5100.00 86.00 92.00 92.38 0.004466 4.94 1031.73191.21 0.38Reach-1 3.900 500-Year 18000.00 86.00 97.47 98.50 0.005766 8.15 2209.39 234.93 0.47Reach-1 3.894 100-Year FP 8000.00 86.00 93.43 93.93 0.012392 5.68 1407.24 218.84 0.40Reach-1 3.894 10-Year 1700.00 86.00 89.07 89.25 0.013119 3.34 509.70 185.10 0.35Reach-1 3.894 50-Year 5100.00 86.00 91.82 92.18 0.012208 4.81 1061.22210.47 0.38Reach-1 3.894 500-Year 18000.00 86.00 97.27 98.24 0.014074 7.88 2285.38 238.49 0.45Reach-1 3.887 100-Year FP 8000.00 84.20 90.88 90.88 93.04 0.032559 11.80 677.68 157.04 1.00Reach-1 3.887 10-Year 1700.00 84.20 87.34 87.34 88.34 0.041980 8.03 211.80 106.17 1.00Reach-1 3.887 50-Year 5100.00 84.20 89.54 89.54 91.30 0.035427 10.64 479.44 138.48 1.01Reach-1 3.887 500-Year 18000.00 84.20 94.19 94.19 97.28 0.028881 14.11 1275.34 206.42 1.00 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 3.885 100-Year FP 8000.00 83.80 90.04 90.04 92.27 0.018168 11.97 668.41 150.68 1.00Reach-1 3.885 10-Year 1700.00 83.80 86.45 86.45 87.48 0.023771 8.15 208.72 102.82 1.01Reach-1 3.885 50-Year 5100.00 83.80 88.70 88.70 90.48 0.019531 10.69 476.86 134.51 1.00Reach-1 3.885 500-Year 18000.00 83.80 93.41 93.41 96.60 0.016135 14.32 1256.59 197.73 1.00Reach-1 3.884 100-Year FP 8000.00 82.00 90.64 91.40 0.004146 6.99 1145.27 191.08 0.50Reach-1 3.884 10-Year 1700.00 82.00 86.08 86.36 0.003795 4.23 401.69 133.36 0.43Reach-1 3.884 50-Year 5100.00 82.00 89.00 89.56 0.003975 6.02 847.69 171.62 0.48Reach-1 3.884 500-Year 18000.00 82.00 94.35 95.72 0.004564 9.39 1918.34 222.77 0.56Reach-1 3.882 100-Year FP 8000.00 82.00 90.82 91.27 0.003460 5.38 1487.13 209.42 0.35Reach-1 3.882 10-Year 1700.00 82.00 86.15 86.28 0.002521 2.87 592.09 167.87 0.27Reach-1 3.882 50-Year 5100.00 82.00 89.15 89.45 0.003153 4.45 1145.89198.58 0.33Reach-1 3.882 500-Year 18000.00 82.00 94.60 95.55 0.004258 7.84 2318.04 229.27 0.42Reach-1 3.875 100-Year FP 8000.00 82.00 90.67 91.07 0.008024 5.06 1582.17 214.61 0.33Reach-1 3.875 10-Year 1700.00 82.00 86.04 86.15 0.005215 2.57 660.36 176.42 0.23Reach-1 3.875 50-Year 5100.00 82.00 89.01 89.28 0.007199 4.14 1233.28205.52 0.30Reach-1 3.875 500-Year 18000.00 82.00 94.44 95.30 0.010211 7.49 2429.17 235.47 0.39Reach-1 3.869 100-Year FP 8000.00 82.00 88.09 88.09 90.23 0.033115 11.75 680.90 161.00 1.01Reach-1 3.869 10-Year 1700.00 82.00 84.52 84.52 85.53 0.042273 8.08 210.31 104.85 1.01Reach-1 3.869 50-Year 5100.00 82.00 86.75 86.75 88.50 0.035258 10.62 480.01 138.40 1.01Reach-1 3.869 500-Year 18000.00 82.00 91.35 91.35 94.34 0.029097 13.89 1295.54 216.06 1.00Reach-1 3.867 100-Year FP 8000.00 82.00 87.63 87.63 89.76 0.018410 11.70 683.88 161.27 1.00Reach-1 3.867 10-Year 1700.00 82.00 84.20 84.20 85.17 0.024217 7.88 215.86 113.45 1.01Reach-1 3.867 50-Year 5100.00 82.00 86.32 86.32 88.03 0.019741 10.51 485.17 141.61 1.00Reach-1 3.867 500-Year 18000.00 82.00 90.83 90.83 93.86 0.016459 13.96 1289.49 214.36 1.00Reach-1 3.866 100-Year FP 8000.00 80.00 87.35 88.25 0.005471 7.60 1053.03 190.64 0.57Reach-1 3.866 10-Year 1700.00 80.00 82.93 83.33 0.006596 5.03 338.23 131.24 0.55Reach-1 3.866 50-Year 5100.00 80.00 85.70 86.41 0.005876 6.77 752.79 170.94 0.57Reach-1 3.866 500-Year 18000.00 80.00 91.19 92.66 0.005002 9.76 1850.11 225.12 0.59Reach-1 3.864 100-Year FP 8000.00 80.00 87.54 88.10 0.005020 6.01 1330.21 207.86 0.42Reach-1 3.864 10-Year 1700.00 80.00 83.00 83.21 0.005786 3.66 464.70 171.18 0.39 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 3.864 50-Year 5100.00 80.00 85.86 86.27 0.005012 5.15 991.01 195.77 0.40Reach-1 3.864 500-Year 18000.00 80.00 91.43 92.48 0.005403 8.24 2189.40 232.09 0.47Reach-1 3.857 100-Year FP 8000.00 80.00 87.37 87.90 0.013430 5.87 1363.70 214.97 0.41Reach-1 3.857 10-Year 1700.00 80.00 82.76 82.98 0.018201 3.75 453.01 176.16 0.41Reach-1 3.857 50-Year 5100.00 80.00 85.68 86.07 0.013893 5.06 1008.42204.14 0.40Reach-1 3.857 500-Year 18000.00 80.00 91.27 92.27 0.014243 8.04 2243.03 235.67 0.45Reach-1 3.851 100-Year FP 8000.00 78.00 86.31 87.39 0.012148 8.33 960.90 179.39 0.63Reach-1 3.851 10-Year 1700.00 78.00 81.91 82.39 0.013821 5.53 307.27 116.93 0.60Reach-1 3.851 50-Year 5100.00 78.00 84.71 85.56 0.012395 7.38 691.13 157.08 0.62Reach-1 3.851 500-Year 18000.00 78.00 90.09 91.74 0.011919 10.30 1747.78 233.78 0.66Reach-1 3.849 100-Year FP 8000.00 78.00 86.30 87.28 0.005947 7.91 1011.23 183.52 0.59Reach-1 3.849 10-Year 1700.00 78.00 81.91 82.27 0.005169 4.84 351.08 120.03 0.50Reach-1 3.849 50-Year 5100.00 78.00 84.70 85.45 0.005705 6.93 736.26 158.14 0.57Reach-1 3.849 500-Year 18000.00 78.00 90.06 91.63 0.006283 10.06 1789.05 235.98 0.64Reach-1 3.848 100-Year FP 8000.00 78.00 86.40 87.21 0.004632 7.22 1108.17 191.29 0.53Reach-1 3.848 10-Year 1700.00 78.00 81.96 82.24 0.003666 4.26 399.20 127.86 0.42Reach-1 3.848 50-Year 5100.00 78.00 84.79 85.39 0.004381 6.25 816.50 168.04 0.50Reach-1 3.848 500-Year 18000.00 78.00 90.18 91.55 0.005021 9.38 1918.86 238.12 0.58Reach-1 3.846 100-Year FP 8000.00 78.00 86.64 87.06 0.003334 5.16 1549.34 224.15 0.35Reach-1 3.846 10-Year 1700.00 78.00 82.04 82.16 0.002523 2.79 609.30 180.84 0.27Reach-1 3.846 50-Year 5100.00 78.00 84.97 85.26 0.003052 4.31 1184.47210.95 0.32Reach-1 3.846 500-Year 18000.00 78.00 90.51 91.35 0.004044 7.34 2453.44 243.59 0.41Reach-1 3.838 100-Year FP 8000.00 78.00 86.48 86.85 0.007571 4.85 1649.99 224.85 0.32Reach-1 3.838 10-Year 1700.00 78.00 81.91 82.01 0.005561 2.50 679.06 199.21 0.24Reach-1 3.838 50-Year 5100.00 78.00 84.83 85.07 0.006672 3.97 1285.62215.79 0.29Reach-1 3.838 500-Year 18000.00 78.00 90.31 91.09 0.010061 7.05 2552.05 245.79 0.38Reach-1 3.830 100-Year FP 8000.00 78.00 85.18 83.94 86.35 0.015483 8.69 920.83 193.66 0.70Reach-1 3.830 10-Year 1700.00 78.00 81.06 80.38 81.60 0.017234 5.91 287.54 116.83 0.66Reach-1 3.830 50-Year 5100.00 78.00 83.63 82.59 84.60 0.016401 7.90 645.43 163.42 0.70Reach-1 3.830 500-Year 18000.00 78.00 88.94 90.56 0.012291 10.22 1762.09 243.96 0.67 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft) Reach-1 3.828 100-Year FP 8000.00 78.00 83.95 83.95 86.08 0.018616 11.71 683.17 162.20 1.01Reach-1 3.828 10-Year 1700.00 78.00 80.36 80.36 81.36 0.023724 8.02 211.99 106.74 1.00Reach-1 3.828 50-Year 5100.00 78.00 82.59 82.59 84.34 0.019564 10.63 479.57 136.57 1.00Reach-1 3.828 500-Year 18000.00 78.00 88.46 90.42 0.009425 11.24 1602.00 242.70 0.77Reach-1 3.827 100-Year FP 8000.00 76.00 84.79 85.40 0.003286 6.27 1276.28 210.61 0.45Reach-1 3.827 10-Year 1700.00 76.00 79.67 79.98 0.004622 4.49 378.84 133.59 0.47Reach-1 3.827 50-Year 5100.00 76.00 82.97 83.45 0.003493 5.59 912.58 187.43 0.45Reach-1 3.827 500-Year 18000.00 76.00 89.11 90.08 0.003008 7.90 2277.63 247.51 0.46Reach-1 3.825 100-Year FP 8000.00 76.00 84.95 85.29 0.002425 4.68 1710.45 225.61 0.30Reach-1 3.825 10-Year 1700.00 76.00 79.78 79.89 0.002473 2.71 626.89 191.27 0.26Reach-1 3.825 50-Year 5100.00 76.00 83.12 83.35 0.002253 3.90 1306.13214.18 0.28Reach-1 3.825 500-Year 18000.00 76.00 89.29 89.96 0.002922 6.57 2740.95 248.57 0.35Reach-1 3.808 100-Year FP 8000.00 74.00 84.70 84.98 0.004744 4.18 1913.32 229.17 0.26Reach-1 3.808 10-Year 1700.00 74.00 79.56 79.63 0.003117 2.11 804.70 197.24 0.18Reach-1 3.808 50-Year 5100.00 74.00 82.89 83.07 0.004037 3.39 1506.12219.90 0.23Reach-1 3.808 500-Year 18000.00 74.00 88.97 89.56 0.006501 6.13 2936.00 249.38 0.31Reach-1 3.792 100-Year FP 8000.00 74.00 84.18 79.43 84.51 0.006426 4.62 1731.55 224.21 0.29Reach-1 3.792 10-Year 1700.00 74.00 79.20 76.73 79.29 0.005225 2.49 683.09 192.88 0.23Reach-1 3.792 50-Year 5100.00 74.00 82.44 78.37 82.67 0.005645 3.78 1350.87 215.42 0.27Reach-1 3.792 500-Year 18000.00 74.00 88.22 82.17 88.92 0.008602 6.712682.52 245.75 0.36Reach-1 3.78 BridgeReach-1 3.774 100-Year FP 8000.00 74.00 83.43 83.98 0.004861 5.94 1345.77 209.38 0.41Reach-1 3.774 10-Year 1700.00 74.00 78.79 78.95 0.003101 3.24 524.85 145.19 0.30Reach-1 3.774 50-Year 5100.00 74.00 81.86 82.23 0.004101 4.93 1033.60187.25 0.37Reach-1 3.774 500-Year 18000.00 74.00 87.18 88.24 0.005285 8.28 2207.00 244.72 0.46Reach-1 3.773 100-Year FP 8000.00 74.00 83.43 83.93 0.002522 5.70 1403.44 218.96 0.40Reach-1 3.773 10-Year 1700.00 74.00 78.77 78.93 0.001748 3.19 533.23 151.35 0.30Reach-1 3.773 50-Year 5100.00 74.00 81.84 82.20 0.002223 4.76 1071.93199.66 0.36Reach-1 3.773 500-Year 18000.00 74.00 87.20 88.18 0.002726 7.96 2292.41 249.09 0.44Reach-1 3.771 100-Year FP 8000.00 72.00 83.56 83.86 0.001067 4.37 1834.23 228.76 0.27 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl(cfs) (ft)(ft)(ft)(ft) (ft/ft) (ft/s) (sq ft) (ft)Reach-1 3.771 10-Year1700.00 72.00 78.8378.90 0.000483 1.99 853.88 187.260.16Reach-1 3.771 50-Year5100.00 72.00 81.9582.14 0.000835 3.45 1478.49 213.550.23Reach-1 3.771 500-Year18000.00 72.00 87.3988.07 0.001494 6.64 2764.56 254.250.34Reach-1 3.770 100-Year FP 8000.00 72.00 83.6183.82 0.001028 3.71 2188.71 233.840.20Reach-1 3.770 10-Year1700.00 72.00 78.8578.88 0.000354 1.48 1148.98 201.100.11Reach-1 3.770 50-Year5100.00 72.00 81.9982.11 0.000752 2.82 1817.36 223.910.17Reach-1 3.770 500-Year18000.00 72.00 87.4888.01 0.001713 5.93 3150.58 261.130.28Reach-1 3.753 100-Year FP 8000.00 72.00 83.3183.66 0.005922 4.31 1701.17 222.210.28Reach-1 3.753 10-Year1700.00 72.00 78.7778.83 0.002137 1.80 846.10 167.980.15Reach-1 3.753 50-Year5100.00 72.00 81.7882.00 0.004417 3.23 1386.37 191.980.23Reach-1 3.753 500-Year18000.00 72.00 87.0087.74 0.009947 7.29 2651.95 284.490.38Reach-1 3.734 100-Year FP 8000.00 70.00 82.8883.15 0.004799 4.36 1927.93 234.070.25Reach-1 3.734 10-Year1700.00 70.00 78.6378.67 0.001364 1.80 1024.83 192.990.13Reach-1 3.734 50-Year5100.00 70.00 81.4781.63 0.003316 3.38 1605.57 221.030.21Reach-1 3.734 500-Year18000.00 70.00 86.1886.85 0.008971 7.16 2777.76 296.480.36Reach-1 3.727 100-Year FP 8000.00 70.00 82.2482.81 0.014365 6.59 1339.23 215.310.42Reach-1 3.727 10-Year1700.00 70.00 78.4078.56 0.006015 3.51 592.31 172.650.26Reach-1 3.727 50-Year5100.00 70.00 81.0381.39 0.010545 5.33 1086.49 202.560.36Reach-1 3.727 500-Year18000.00 70.00 84.8486.21 0.026945 10.16 1946.11 263.510.60Reach-1 3.69 100-Year FP 8000.00 68.90 78.8579.78 0.032643 9.89 1251.13 415.600.65Reach-1 3.69 10-Year1700.00 68.90 76.9777.23 0.010352 4.56 521.03 306.820.35Reach-1 3.69 50-Year5100.00 68.90 78.1078.87 0.028692 8.62 937.83 412.250.60Reach-1 3.69 500-Year18000.00 68.90 81.1982.37 0.029521 11.33 2236.79 428.280.64Reach-1 3.675 100-Year FP 8000.00 67.10 78.05 77.32 78.68 0.006071 8.70 1401.95 490.820.59Reach-1 3.675 10-Year1700.00 67.10 76.92 75.64 77.00 0.000932 3.02 896.99 420.410.22Reach-1 3.675 50-Year5100.00 67.10 76.85 76.79 77.63 0.009195 9.40 867.61 419.200.70Reach-1 3.675 500-Year18000.00 67.10 80.82 79.05 81.48 0.003797 8.66 2884.53 552.420.50 300350400450500550600650150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.151 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.035.08.045350400450500550600650700150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.127 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.08.1.08050100150200150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.103 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.08.1.08050100150200148150152154156158160162164166Quarry Creek LOMR Plan: As-Built Conditions RS = 4.075 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.05.1.05 020406080100120140160145150155160165170Quarry Creek LOMR Plan: As-Built Conditions RS = 4.059 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.05.07.05020406080100120140160140145150155160165Quarry Creek LOMR Plan: As-Built Conditions RS = 4.041 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundLeveeIneffBank Sta.05.07.05020406080100120135140145150155160Quarry Creek LOMR Plan: As-Built Conditions RS = 4.019 pStation (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.05.05.05020406080100120125130135140145150Quarry Creek LOMR Plan: As-Built Conditions RS = 4.002 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.05.05.05 020406080100110120130140150Quarry Creek LOMR Plan: As-Built Conditions RS = 3.994 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.05.05.05050100150200250100105110115120125130135Quarry Creek LOMR Plan: As-Built Conditions RS = 3.982 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.05.05.050501001502002503009095100105110115120125130Quarry Creek LOMR Plan: As-Built Conditions RS = 3.968 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.05.1.0450501001502002509095100105110115120Quarry Creek LOMR Plan: As-Built Conditions RS = 3.951 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.05.1.045 0501001502002509095100105110115Quarry Creek LOMR Plan: As-Built Conditions RS = 3.938 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundIneffBank Sta.045.1.1.0450501001502002503009095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.923 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.922 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.920 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06 050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.914 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.905 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.903 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.902 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06 050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.900 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.894 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.887 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.885 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06 05010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.884 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.882 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.875 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.869 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06 05010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.867 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.866 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.864 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.857 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.851 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.849 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.848 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.846 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.838 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.830 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.828 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.827 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.825 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.808 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.792 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.06050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.78 BR Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.1.06 050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.78 BR Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.774 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.773 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.771 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.045.06 050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.770 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.06.06.06050100150200250300350400707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.753 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.1.1.10100200300400500707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.734 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.1.1.10100200300400500707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.727 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.1.1.1 010020030040050060070065707580859095100Quarry Creek LOMR Plan: As-Built Conditions RS = 3.69 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 50-YearWS 10-YearGroundBank Sta.1.1.1010020030040050060070065707580859095100Quarry Creek LOMR Plan: As-Built Conditions RS = 3.675 Station (ft)Elevation (ft)LegendWS 500-YearWS 100-Year FPWS 10-YearWS 50-YearGroundBank Sta.045.045.045 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1Reach River Sta Profile W.S. Elev Prof Delta WS E.G. Elev Top Wdth Act Q Left Q Channel Q Right Enc Sta L Ch Sta L Ch Sta R Enc Sta R(ft) (ft) (ft) (ft) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft)Reach-1 4.151 100-Year FP 164.90 165.28 231.28 1796.47 4461.71 1741.82 458.00 548.00Reach-1 4.151 100-Year FW 164.89 0.00 165.28 231.28 1796.45 4461.76 1741.79 398.26 458.00 548.00 629.97Reach-1 4.127 100-Year FP 164.38 164.81 218.70 824.16 6081.46 1094.37 460.00 590.00Reach-1 4.127 100-Year FW 164.38 0.00 164.81 218.70 824.15 6081.50 1094.35 423.16 460.00 590.00 642.26Reach-1 4.103 100-Year FP 162.26 163.34 138.73 626.71 6685.70 687.5970.86 157.99Reach-1 4.103 100-Year FW 162.26 0.00 163.34 138.73 626.66 6685.81 687.53 44.90 70.86 157.99 185.43Reach-1 4.075 100-Year FP 159.96 161.09 126.35 585.51 4991.63 2422.86 68.46 133.56Reach-1 4.075 100-Year FW 159.95 0.00 161.09 126.33 585.27 4992.42 2422.31 51.41 68.46 133.56 178.01Reach-1 4.059 100-Year FP 156.25 159.32 94.99 129.18 7468.42 402.40 44.20 113.68Reach-1 4.059 100-Year FW 156.26 0.01 159.32 95.04 129.68 7466.55 403.77 36.20 44.20 113.68 132.00Reach-1 4.041 100-Year FP 153.04 156.27 86.75 1648.64 3001.77 3349.60 73.56 89.67Reach-1 4.041 100-Year FW 153.04 0.00 156.27 86.75 1648.64 3001.77 3349.60 27.97 73.56 89.67 136.89Reach-1 4.019 100-Year FP 149.12 153.82 56.97 155.28 7535.79 308.92 53.38 89.63Reach-1 4.019 100-Year FW 149.16 0.03 153.82 57.06 156.78 7531.91 311.31 39.71 53.38 89.63 100.11Reach-1 4.002 100-Year FP 142.73 146.92 66.12 1246.53 6440.61 312.8668.19 96.38Reach-1 4.002 100-Year FW 142.89 0.15 146.92 66.12 1278.37 6403.29 318.34 38.58 68.19 96.38 104.70Reach-1 3.994 100-Year FP 125.71 131.36 37.24 8000.00 24.30 63.92Reach-1 3.994 100-Year FW 125.71 0.00 131.36 37.24 8000.00 25.54 24.30 63.92 62.78Reach-1 3.982 100-Year FP 108.90 112.44 77.84 0.07 7750.84 249.09 86.94 153.34Reach-1 3.982 100-Year FW 108.94 0.04 112.44 77.84 0.08 7747.79 252.14 86.76 86.94 153.34 164.60Reach-1 3.968 100-Year FP 106.83 107.42 129.09 37.48 7920.07 42.46 99.60 220.50Reach-1 3.968 100-Year FW 106.89 0.06 107.47 129.12 38.04 7918.36 43.61 20.10 99.60 220.50 225.21Reach-1 3.951 100-Year FP 103.72 106.17 73.46 579.90 4891.79 2528.31118.07 151.22Reach-1 3.951 100-Year FW 103.92 0.20 106.27 73.63 589.31 4840.24 2570.45 30.19 118.07 151.22 180.82Reach-1 3.938 100-Year FP 101.20 103.95 115.04 1645.69 4412.61 1941.70 83.68 119.28Reach-1 3.938 100-Year FW 101.24 0.05 104.10 113.47 1446.97 4524.13 2028.90 54.00 83.68 119.28 167.47Reach-1 3.923 100-Year FP 95.96 96.80 212.89 8000.00 18.02 256.33Reach-1 3.923 100-Year FW 95.96 0.00 96.80 212.89 8000.00 31.54 18.02256.33 244.43Reach-1 3.922 100-Year FP 96.20 96.65 221.09 8000.00 17.01 257.90 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile W.S. Elev Prof Delta WS E.G. Elev Top Wdth Act Q Left Q Channel Q Right Enc Sta L Ch Sta L Ch Sta R Enc Sta R(ft) (ft) (ft) (ft) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft)Reach-1 3.922 100-Year FW 96.20 0.00 96.65 221.09 8000.00 27.20 17.01257.90 248.29Reach-1 3.920 100-Year FP 96.22 96.61 226.30 8000.00 15.75 259.50Reach-1 3.920 100-Year FW 96.22 0.00 96.61 226.31 8000.00 23.97 15.75259.50 250.28Reach-1 3.914 100-Year FP 96.04 96.44 229.26 8000.00 14.71 262.52Reach-1 3.914 100-Year FW 96.04 0.00 96.44 229.27 8000.00 23.51 14.71262.52 252.78Reach-1 3.905 100-Year FP 93.52 95.60 165.83 8000.00 18.63 254.65Reach-1 3.905 100-Year FW 93.51 0.00 95.60 165.79 8000.00 63.50 18.63254.65 229.96Reach-1 3.903 100-Year FP 92.72 94.91 156.07 8000.00 20.46 255.50Reach-1 3.903 100-Year FW 92.72 0.00 94.91 156.06 8000.00 70.89 20.46255.50 226.95Reach-1 3.902 100-Year FP 93.32 94.37 189.96 8000.00 21.47 255.52Reach-1 3.902 100-Year FW 93.32 0.00 94.37 189.96 8000.00 45.71 21.47255.52 235.67Reach-1 3.900 100-Year FP 93.62 94.16 207.74 8000.00 17.06 266.59Reach-1 3.900 100-Year FW 93.62 0.00 94.16 207.73 8000.00 39.00 17.06266.59 246.73Reach-1 3.894 100-Year FP 93.43 93.93 218.84 8000.00 16.26 269.10Reach-1 3.894 100-Year FW 93.43 0.00 93.93 218.84 8000.00 34.08 16.26269.10 252.92Reach-1 3.887 100-Year FP 90.88 93.04 157.04 8000.00 27.53 259.49Reach-1 3.887 100-Year FW 90.88 0.00 93.04 156.98 8000.00 63.20 27.53259.49 220.45Reach-1 3.885 100-Year FP 90.04 92.27 150.68 8000.00 28.05 260.97Reach-1 3.885 100-Year FW 90.04 0.00 92.27 150.64 8000.00 67.78 28.05260.97 219.01Reach-1 3.884 100-Year FP 90.64 91.40 191.08 8000.00 35.34 255.52Reach-1 3.884 100-Year FW 90.64 0.00 91.39 191.06 8000.00 45.67 35.34255.52 236.75Reach-1 3.882 100-Year FP 90.82 91.27 209.42 0.63 7999.37 44.50 256.01Reach-1 3.882 100-Year FW 90.81 0.00 91.26 209.41 0.63 7999.37 42.47 44.50 256.01 251.89Reach-1 3.875 100-Year FP 90.67 91.07 214.61 0.59 7998.72 0.69 42.11 253.00Reach-1 3.875 100-Year FW 90.67 0.00 91.07 214.59 0.59 7998.73 0.69 40.39 42.11 253.00 254.99Reach-1 3.869 100-Year FP 88.09 90.23 161.00 8000.00 38.39 265.43Reach-1 3.869 100-Year FW 88.10 0.01 90.23 161.00 8000.00 69.37 38.39265.43 230.37Reach-1 3.867 100-Year FP 87.63 89.76 161.27 8000.00 39.47 267.98Reach-1 3.867 100-Year FW 87.63 0.00 89.76 161.20 8000.00 69.84 39.47267.98 231.12 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile W.S. Elev Prof Delta WS E.G. Elev Top Wdth Act Q Left Q Channel Q Right Enc Sta L Ch Sta L Ch Sta R Enc Sta R(ft) (ft) (ft) (ft) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft)Reach-1 3.866 100-Year FP 87.35 88.25 190.64 8000.00 49.31 263.08Reach-1 3.866 100-Year FW 87.35 0.00 88.25 190.62 8000.00 56.78 49.31263.08 247.42Reach-1 3.864 100-Year FP 87.54 88.10 207.86 8000.00 42.71 267.02Reach-1 3.864 100-Year FW 87.53 0.00 88.10 207.85 8000.00 49.87 42.71267.02 257.73Reach-1 3.857 100-Year FP 87.37 87.90 214.97 8000.00 38.21 267.48Reach-1 3.857 100-Year FW 87.37 0.00 87.90 214.96 8000.00 45.11 38.21267.48 260.08Reach-1 3.851 100-Year FP 86.31 87.39 179.39 8000.00 38.04 271.30Reach-1 3.851 100-Year FW 86.31 0.00 87.39 179.35 8000.00 64.00 38.04271.30 243.39Reach-1 3.849 100-Year FP 86.30 87.28 183.52 8000.00 40.83 276.48Reach-1 3.849 100-Year FW 86.30 0.00 87.27 183.49 8000.00 60.58 40.83276.48 244.11Reach-1 3.848 100-Year FP 86.40 87.21 191.29 8000.00 40.41 277.49Reach-1 3.848 100-Year FW 86.40 0.00 87.21 191.25 8000.00 55.87 40.41277.49 247.16Reach-1 3.846 100-Year FP 86.64 87.06 224.15 8000.00 39.44 280.34Reach-1 3.846 100-Year FW 86.64 0.00 87.05 224.13 8000.00 47.80 39.44280.34 271.95Reach-1 3.838 100-Year FP 86.48 86.85 224.85 8000.00 35.24 279.47Reach-1 3.838 100-Year FW 86.48 0.00 86.85 224.83 8000.00 45.42 35.24279.47 270.26Reach-1 3.830 100-Year FP 85.18 86.35 193.66 8000.00 30.08 279.47Reach-1 3.830 100-Year FW 85.17 0.00 86.35 191.61 8000.00 58.86 30.08279.47 250.62Reach-1 3.828 100-Year FP 83.95 86.08 162.20 8000.00 30.91 281.17Reach-1 3.828 100-Year FW 84.04 0.09 86.10 154.20 8000.00 79.56 30.91281.17 233.76Reach-1 3.827 100-Year FP 84.79 85.40 210.61 8000.00 30.44 282.18Reach-1 3.827 100-Year FW 85.03 0.24 85.60 210.61 8000.00 47.49 30.44282.18 258.10Reach-1 3.825 100-Year FP 84.95 85.29 225.61 8000.00 30.31 282.37Reach-1 3.825 100-Year FW 85.18 0.23 85.50 225.62 8000.00 43.18 30.31282.37 268.80Reach-1 3.808 100-Year FP 84.70 84.98 229.17 8000.00 29.85 284.01Reach-1 3.808 100-Year FW 84.95 0.25 85.21 229.17 8000.00 42.57 29.85284.01 271.74Reach-1 3.792 100-Year FP 84.18 84.51 224.21 8000.00 30.39 285.15Reach-1 3.792 100-Year FW 84.49 0.31 84.79 224.22 8000.00 45.54 30.39285.15 269.76 HEC-RAS Plan: As-Built River: RIVER-1 Reach: Reach-1 (Continued)Reach River Sta Profile W.S. Elev Prof Delta WS E.G. Elev Top Wdth Act Q Left Q Channel Q Right Enc Sta L Ch Sta L Ch Sta R Enc Sta R(ft) (ft) (ft) (ft) (cfs) (cfs) (cfs) (ft) (ft) (ft) (ft)Reach-1 3.78 BR U 100-Year FP 84.11 84.46 217.83 8000.00 30.39 285.15Reach-1 3.78 BR U 100-Year FW 84.42 0.32 84.75 218.22 8000.00 45.54 30.39 285.15 269.76Reach-1 3.78 BR D 100-Year FP 83.60 84.13 205.76 8000.00 38.75 256.16Reach-1 3.78 BR D 100-Year FW 84.00 0.40 84.47 203.38 8000.00 42.87 38.75 256.16 252.25Reach-1 3.774 100-Year FP 83.43 83.98 209.38 8000.00 38.75 256.16Reach-1 3.774 100-Year FW 83.87 0.44 84.35 209.38 8000.00 42.87 38.75256.16 252.25Reach-1 3.773 100-Year FP 83.43 83.93 218.96 8000.00 44.28 270.02Reach-1 3.773 100-Year FW 83.87 0.44 84.31 218.96 8000.00 47.62 44.28270.02 266.58Reach-1 3.771 100-Year FP 83.56 83.86 228.76 3.31 7996.69 52.31 277.16Reach-1 3.771 100-Year FW 83.98 0.42 84.25 228.76 5.97 7994.03 46.01 52.31 277.16 274.77Reach-1 3.770 100-Year FP 83.61 83.82 233.84 22.98 7949.68 27.34 60.85 271.29Reach-1 3.770 100-Year FW 84.02 0.41 84.22 233.84 29.75 7935.74 34.5149.32 60.85 271.29 283.16Reach-1 3.753 100-Year FP 83.31 83.66 222.21 5739.57 2246.52 13.91 210.22 280.04Reach-1 3.753 100-Year FW 83.76 0.45 84.08 222.20 5696.27 2273.46 30.27 82.47 210.22 280.04 304.67Reach-1 3.734 100-Year FP 82.88 83.15 234.07 5114.83 2885.18 303.02 378.67Reach-1 3.734 100-Year FW 83.41 0.53 83.65 234.07 5147.23 2852.77 141.37 303.02 378.67 375.44Reach-1 3.727 100-Year FP 82.24 82.81 215.31 3840.88 4159.12 324.93 425.87Reach-1 3.727 100-Year FW 82.59 0.35 83.31 175.34 3154.93 4845.07 180.00 324.93 425.87 427.25Reach-1 3.69 100-Year FP 78.85 79.78 415.60 3947.07 3965.52 87.42 426.28 481.51Reach-1 3.69 100-Year FW 79.30 0.45 80.17 294.00 3968.79 3934.96 96.25 194.00 426.28 481.51 488.00Reach-1 3.675 100-Year FP 78.05 78.68 490.82 4788.82 2466.07 745.11 468.80 510.90Reach-1 3.675 100-Year FW 79.05 1.00 79.46 367.00 5345.59 2151.33 503.08 183.00 468.80 510.90 550.00 300350400450500550600650150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.151 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.035.08.045350400450500550600650700150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.127 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.08.1.08050100150200150155160165170175Quarry Creek LOMR Plan: As-Built Conditions RS = 4.103 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundIneffBank Sta.08.1.08050100150200148150152154156158160162164166Quarry Creek LOMR Plan: As-Built Conditions RS = 4.075 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.05.1.05 020406080100120140160145150155160165170Quarry Creek LOMR Plan: As-Built Conditions RS = 4.059 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank Sta.05.07.05020406080100120140160140145150155160165Quarry Creek LOMR Plan: As-Built Conditions RS = 4.041 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundLeveeIneffBank Sta.05.07.05020406080100120135140145150155160Quarry Creek LOMR Plan: As-Built Conditions RS = 4.019 pStation (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundIneffBank StaEncroachment.05.05.05020406080100120125130135140145150Quarry Creek LOMR Plan: As-Built Conditions RS = 4.002 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundIneffBank StaEncroachment.05.05.05 020406080100110120130140150Quarry Creek LOMR Plan: As-Built Conditions RS = 3.994 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.05.05.05050100150200250100105110115120125130135Quarry Creek LOMR Plan: As-Built Conditions RS = 3.982 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.05.05.050501001502002503009095100105110115120125130Quarry Creek LOMR Plan: As-Built Conditions RS = 3.968 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundIneffBank StaEncroachment.05.1.0450501001502002509095100105110115120Quarry Creek LOMR Plan: As-Built Conditions RS = 3.951 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundIneffBank StaEncroachment.05.1.045 0501001502002509095100105110115Quarry Creek LOMR Plan: As-Built Conditions RS = 3.938 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundIneffBank StaEncroachment.045.1.1.0450501001502002503009095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.923 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.922 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.920 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank Sta.06.06.06 050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.914 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.1.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.905 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.903 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.902 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06 050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.900 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.894 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.1.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.887 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.885 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.06 05010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.884 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.882 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.0605010015020025030080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.875 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.1.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.869 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06 05010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.867 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.866 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.864 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.0605010015020025030035080859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.857 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.1.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.851 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.849 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.848 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.846 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.06.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.838 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank Sta.06.1.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.830 Station (ft)Elevation (ft)LegendWS 100-Year FPWS 100-Year FWGroundBank StaEncroachment.06.06.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.828 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.060501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.827 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06 0501001502002503003507580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.825 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.808 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.1.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.792 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.1.06050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.78 BR Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.1.06 050100150200250300350707580859095100105110Quarry Creek LOMR Plan: As-Built Conditions RS = 3.78 BR Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.774 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.773 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.771 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.045.06 050100150200250300350707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.770 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.06.06.06050100150200250300350400707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.753 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.1.1.10100200300400500707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.734 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.1.1.10100200300400500707580859095100105Quarry Creek LOMR Plan: As-Built Conditions RS = 3.727 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.1.1.1 010020030040050060070065707580859095100Quarry Creek LOMR Plan: As-Built Conditions RS = 3.69 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.1.1.1010020030040050060070065707580859095100Quarry Creek LOMR Plan: As-Built Conditions RS = 3.675 Station (ft)Elevation (ft)LegendWS 100-Year FWWS 100-Year FPGroundBank StaEncroachment.045.045.045