Common use of Hydrologic Studies Clause in Contracts

Hydrologic Studies. The Engineer shall provide the following services: a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.

Hydrologic Studies. The Engineer shall provide the following services:: DocuSign Envelope ID: 892480A0-816A-4F72-BEA4-A48D7E8902E6 a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.

Hydrologic Studies. The Engineer shall provide the following services: a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207E6BC4953-9CCE-4B63CD40-AE1442B4-3C13B2D84757 8A24-1AF55737BB1F topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.

Hydrologic Studies. The Engineer shall provide the following services:: DocuSign Envelope ID: DB60124E-7585-4844-AF91-B8FDD08F857C a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.

Hydrologic Studies. The Engineer shall provide the following services:: DocuSign Envelope ID: 5410F844-7202-4C91-B48D-AEAE41F0DC79 a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.

Hydrologic Studies. The Engineer shall provide the following services:: DocuSign Envelope ID: 2136EF24-41E3-476A-9DE8-B6DB65099AD1 a. Incorporate in the hydrologic study a thorough evaluation of the methodology available, comparison of the results of two or more methods, and calibration of results against measured data, if available. b. Calculate discharges using appropriate hydrologic methods, as included in this document or as approved by the STATE. c. Consider the pre-construction and post-construction conditions in the hydrologic study, as required in the individual Work Authorization. The additional lanes may be accounted for by increasing percent development or by a higher curve number, as deemed appropriate for the site. d. Obtain the drainage area boundaries and hydrologic parameters such as impervious covered areas, and overland flow paths and slopes from appropriate sources including, but are not limited to, DocuSign Envelope ID: 81458207-9CCE-4B63-AE14-3C13B2D84757 topographic maps, GIS modeling, construction plans, and existing hydrologic studies. The Engineer shall not use existing hydrologic studies without assessing of their validity. If necessary, obtain additional information such as local rainfall from official sites such as airports. e. The plan set must include, at a minimum, the “design” frequency to be specified in the Work Authorization and the 1% AEP storm frequency. The report must include the full range of frequencies (50%, 20% 10%, 4%, 2%, 1%, and 0.2% AEP). Perform scour evaluations for both the 100yr and 500yr frequencies. f. Compare calculated discharges to the effective FEMA flows. If calculated discharges are to be used in the model instead of the effective FEMA flows, full justification must be documented.