Drainage Design. 4.8.1 The Developer shall provide a drainage system which will not increase, alter or affect the flow of surface waters, nor contribute to same, so as to damage, flood or adversely affect any property, either upstream or downstream of the Subdivision. The Developer shall also provide to the City the formal written opinion of a certified and licensed professional engineer certifying, as a professional engineer, that he has reviewed the entire watershed within which the subdivision is located and that upon full development at the greatest allowable use density, under existing zoning of all land within the watershed, the Subdivision will not increase, alter or affect the flow of surface waters, nor contribute to same, so as to damage, flood or adversely affect any property, either upstream or downstream of the Subdivision. Further, the Developer agrees to hold harmless and to defend the City and the City Engineer from any claim, cause of action or liability, alleged and/or proven, to have arisen directly or indirectly from alteration affecting the surface water by reason of the Developer’s design, construction, installation or the development itself, in whole or part. The aforesaid indemnity agreement includes, without limitation, the reasonable expenses of the City incurred in defending itself against any matter covered by such indemnity agreement, including attorney fees and expenses of litigation.
Drainage Design. 1. Delineate drainage area tributaries and determine runoff in accordance with the NJDOT “Design Manual Roadway” as revised.
Drainage Design. The Consultant shall provide drainage layouts, drainage area maps, calculations, and design of all drainage components. The Consultant shall design all detention/retention ponds, conventional storm drainage and cross drainage in conformance with the State Hydraulic Design Manual (May 0000), Xxxxxxxxx' criteria. The drainage design will be prepared to provide for the two-lane frontage section. At a minimum the drainage items to be provided shall include the detailed drainage area maps showing the final drainage areas and inlet and storm sewer calculations for revised storm sewer flow elements. All drainage designs shall be prepared in accordance with the findings presented in the Drainage Study. The proposed tasks are listed below: Conduct field trips to the Project site to investigate and confirm data and assumptions and assess general drainage conditions as needed; Review previous plans and drainage reports prepared by others which relate to drainage in the Project area (to be provided by the PMC); Prepare proposed drainage area maps for proposed improvements within the portion of the Project limits stated above; Design drainage structures located within the Project ROW, including open ditch drainage, storm sewer, inlets, manholes, subsurface drainage at retaining walls, and inlets/internal drainage piping where required on structures; Design and analyze the storm sewer system utilizing the WINSTORM Program and incorporate output to plan set; Design and analyze the roadside ditches for the proposed drainage criteria and incorporate results into the plans set on the roadway plan and profile sheets; Prepare storm sewer plan/profile drawings and special plan details, where required, for storm sewer system, laterals, junction boxes, etc. Identify potential utility conflicts during project design. Drawings will be prepared on 11” X 17” sheet at horizontal scale of 1”=100’ and vertical scale of 1”=10’; and Design cross-culvert extensions, if required, within the Project limits. This task is the extent to which designs and calculations regarding cross-culverts is required. Required drainage work outside the ROW will be performed by others. Function Code 162: Signing, Pavement Markings and Signalization (Permanent)
Drainage Design. The Consultant shall finalize the design of the drainage and stormwater management systems. The Consultant shall verify the number and location of pond sites, floodplain compensating storage sites, and/or water quality and quantity treatment needed to appropriately meet the needs of the project.
Drainage Design. As directed by the DEPARTMENT, the CONSULTANT will conduct the following design services and submittals. Refer to the Roadway and Bridge Standard Design Scope of Services.
Drainage Design. For inclusion in the overall project plans, the consultant shall provide designs, specifications, and analysis for the construction of a new storm sewer interceptor from approximately Xxxxxx Ave. west to approximately O’Neil Ave., in coordination with the on-going West Edge/Capitol Basin Project currently being developed by Xxxxx Associates. Along the entire corridor, evaluate for possible replacement the storm sewer manholes and storm sewer inlets, including new laterals as discussed in greater detail later in this scope of work.
Drainage Design. The hydrology and hydraulics calculations will have the following for one modified culvert:
Drainage Design. 1. A scope of services for drainage design shall be determined shall be compensated as Extra Work as stipulated in Section II of this agreement. E. Plan and Profile sheets 1. Plan scale = 1”=20’
Drainage Design a. The ENGINEER will incorporate all design surveys into computer aided drafting and develop topographies and surfaces. This data will be utilized to develop final drainage areas, hydrology and hydraulics. This will include topographic working drawings to prepare the final drainage design.
Drainage Design. The drainage design includes evaluating the existing drainage patterns and comparing to the post- construction drainage areas to determine the extent of the drainage improvements. The drainage design includes evaluating the existing drainage patterns and comparing to the post-construction drainage areas to determine the extent of the drainage improvements. PennDOT criteria will be applied when determining the distance between inlets, pipe sizing, and the acceptable amount of shoulder/lane encroachment. A Drainage Report will be prepared for submission with the HOP Application.
