Common use of Complex Hydraulic Design and Documentation Clause in Contracts

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972 A. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS or unsteady HEC- RAS. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- RAS for this analysis. D. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute these storage discharge relationships along the channel. E. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes for existing and proposed roadway elevations. The Engineer shall provide mitigation to offset a decrease in 1% AEP flood plain volumes. H. Use hydrograph calculations and peak flows to determine the storage required. I. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute these storage discharge relationships along the channel. E. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes for existing and proposed roadway elevations. The Engineer shall provide mitigation to offset a decrease in 1% AEP flood plain volumes. H. Use hydrograph calculations and peak flows to determine the storage required. I. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be DocuSign Envelope ID: 2136EF24-41E3-476A-9DE8-B6DB65099AD1 determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. h. Use hydrograph calculations and peak flows to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be DocuSign Envelope ID: DB60124E-7585-4844-AF91-B8FDD08F857C determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. h. Use hydrograph calculations and peak flows to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge DocuSign Envelope ID: D57C0630-A6B0-4C90-AD28-4D3AAC913D02 relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. h. Use hydrograph calculations and peak flows flo ws to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer Consultant shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studiessuch as SWMM. C. c. Analyze two bridges crossing Upper Buffalo Bayou and Little Prong Creek. Both channels are FEMA studied with a defined floodplain and floodway. i. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administratoradministrator or previous drainage studies, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated update as needed. ii. If Utilize the provided effective “best available data” model is not in a to develop the existing conditions HEC-RAS format, convert it to HEC- RAS for this analysismodel. Verify “best available data” model hydrology with multiple methods and verify hydraulics inputs and results. D. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute these storage discharge relationships along the channel. E. d. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. e. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will must be determined for both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes f. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer Consultant shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the Consultant shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. Use hydrograph calculations and peak flows to determine the storage required. I. If necessary, present g. Present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. Provide hand h. Coordinate with roadway lead and prime DEC to support the calculation of fill in the floodplain within Openroads or Power GeoPAK. Gauge will provide the WSEL and coordinate with Prime. Prime will perform Open Roads or GeoPAK quantification exercise of fill in the floodplain. To confirm prime calculated fill numbers, Gauge will provide spreadsheet average end area calculations which quantify the cut and fill within the 1% AEP flood plain, if anyplain using cross sections provided by the Prime.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumes.water surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 H. h. Use hydrograph calculations and peak flows flo ws to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumes.water surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. DocuSign Envelope ID: E6BC4953-CD40-42B4-8A24-1AF55737BB1F H. h. Use hydrograph calculations and peak flows flo ws to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be DocuSign Envelope ID: 5410F844-7202-4C91-B48D-AEAE41F0DC79 determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. h. Use hydrograph calculations and peak flows to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.

Complex Hydraulic Design and Documentation. The Engineer shall provide the following services: DocuSign Envelope ID: 798F7E2C-0AE6-40EE-BFB4-3AB848988972: A. a. Gather information regarding existing drainage facilities and features from existing plans and other available studies or sources. B. b. Perform hydraulic design and analysis using appropriate hydraulic methods, which may include computer models such as HEC-RAS, unsteady HEC-RAS or unsteady HEC- RAS2D models such as SWMM. 2D models shall not be developed without the express permission of the State. Data entry for appropriate hydraulic computer programs shall consist of a combination of both on-the-ground survey and other appropriate sources including but not limited to topographic maps, GIS modeling, and construction plans and existing hydrologic studies. C. c. Use the current effective FEMA models, where appropriate, as a base model for the analysis. If a “best available data” model is provided by the local floodplain administrator, it must be utilized accordingly for this analysis. Review the provided base model for correctness and updated as needed. If the provided effective model is not in a HEC-RAS format, convert it to HEC- HEC-RAS for this analysis. D. d. If the appropriate hydrologic model requires storage discharge relationships, develop HEC-RAS models or other State’s approved models that will compute account for these storage discharge relationships along the channel. E. e. Consider pre-construction, present and post-construction conditions, as well as future widening, as determined in the Work Authorization. F. f. Quantify impacts, beneficial or adverse, in terms of increases in peak flow rates and water surface elevations for the above listed hydraulic conditions and hydrologic events. Impacts will be DocuSign Envelope ID: 892480A0-816A-4F72-BEA4-A48D7E8902E6 determined both upstream and downstream of the bridge crossings. G. If required in the individual Work Authorization, compute right of way corridor 1% AEP flood plain volumes g. Compute water surface profiles for existing and proposed roadway elevationsconditions. The Engineer shall provide mitigation to offset a decrease any increases in the 1% AEP flood plain volumeswater surface profile. For a FEMA Flood Zone AE (as defined in the TxDOT Hydraulic Design Manual), the ENGINEER shall obtain a zero rise in the water surface profile, beyond the right of way line, unless otherwise approved by the State. H. h. Use hydrograph calculations and peak flows to determine the storage required. I. i. If necessary, present mitigation measures along with the advantages and disadvantages of each. Each method must consider the effects on the entire area. Include approximate construction costs in the report. J. j. Provide hand calculations which quantify the cut and fill within the 1% AEP flood plain, if any.