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.
4.8.2 The Developer agrees that it will provide necessary erosion control, such as seeding for gentle slopes (4 to 1 or less), grass sod for steeper slopes, with special grading and terracing, to the specifications of the City Engineer. All freshly excavated and embankment areas not covered with satisfactory vegetation shall be fertilized, mulched and seeded and/or sodded as required by the City Engineer to prevent erosion. In the event the City Engineer determines that necessary erosion control is not being provided by the Developer, the proper governing authority shall officially notify the Developer of the problem. If the Developer has not corrected the problem within 7 days after the notice, then the proper governing authority shall make the necessary improvement to eliminate the erosion problem, documenting all expenses incurred while performing the work. Prior to releasing any Security hereunder, all expenses incurred by the governing authority relative to the foregoing shall be paid in full by the Developer plus interest thereon at the rate of ten percent ...
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.
Drainage Design. 1. Delineate drainage area tributaries and determine runoff in accordance with the NJDOT “Design Manual Roadway” as revised.
2. Design proposed drainage systems and determine runoff in accordance with NJDOT “Drainage Design Manual”, as revised.
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. Total Maximum Daily Loads (TMDLs) Basin Management Action Plans (BMAPs)
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.
2. Profile scale H = 1”=20’; V = 1’=5’ F. Intersection details.
Drainage Design. 1. develop retention pond design
2. prepare retention pond details
3. develop hydraulic design for culverts and storm drains
4. prepare culvert and storm drain detailsdesign final vertical and horizontal alignments for storm drains
5. Prepare culvert plan and elevation sheets.Prepare plan/profile sheets for storm drain systems and outfall ditches.
6. Select standard details from County or TxDOT list of standards for items such as inlets, manholes, junction boxes and end treatment, etc.Prepare details for non-standard inlets, manholes and junction boxes.
7. Prepare drainage details for outlet protection, outlet structures and utility accommodation structures.
8. Identify pipe strength requirements.Prepare drainage facility quantity summaries.Identify potential utility conflicts and design around them, wherever possible.
9. If applicable, prepare Hydraulic Data Sheets for any bridge or cross drainage structures at outfall channel. (Indicate site location such as name of creeks and stations)
10. Develop plans for all temporary drainage facilities necessary to allow staged construction of the project and to conform with the phasing of adjacent construction projects without significant impact to the hydraulic capacity of the area.
Drainage Design. 3.4.1 Perform preliminary storm sewer sizing and alignment design from Preston Road to 1st Street. Prepare preliminary inlet design sheets and hydraulic design sheets for inclusion in the plans.
3.4.2 Prepare preliminary sizing and alignment design for drainage ditches from 1st Street to 5th Street.
3.4.3 Determine outfall grading requirements and provide plans and details for channel protection (if applicable). • Storm drain profiles will be provided in the Final Design Submittal
3.4.4 Prepare drainage details to clarify intent of design.
3.4.5 Compile applicable Town standard details. Supplement standard details as needed.
Drainage Design. 4.4.1 Perform final storm sewer sizing and alignment design from Preston Road to 1st Street. Finalize inlet design sheets and hydraulic design sheets.
Drainage Design. 4.4.1 Perform preliminary storm sewer sizing and alignment design. Prepare preliminary inlet design sheets and hydraulic design sheets for inclusion in the plans. • Storm drain profiles will be provided in the Final Design Submittal
4.4.2 Determine outfall grading requirements and provide plans and details for channel protection (if applicable).
4.4.3 Prepare drainage details to clarify intent of design.
4.4.4 Compile applicable Town standard details. Supplement standard details as needed.
