Sanitary Sewer Design Clause Samples

Sanitary Sewer Design. This task will include the design of sanitary sewer lines and preparation of the documents for the 30%, 60%, 90% and Final deliverables. The design will be for the replacement of the existing sanitary sewer lines and appurtenances along Newport Avenue from College Way to 9th St. The preparation of the plan and profile sheets will be for the following improvements on Newport Avenue:  Install approximately 3,700 linear feet of new sanitary sewer line and associated appurtenances  Install sanitary sewer stub out at 15th and Newport Ave. for future connection to Stannium Rd.  Replace service lines where necessary  Coordinate with the Contractor to develop connection details to existing service laterals at College Way, NW Juniper, 14th, and 10th .  Contractor will be responsible for developing bypass pumping plan with limited interruption to customers  Sanitary sewer plans will include 8 plan sheets and 1 sheet for details for a total of 9 sheets  12 internal team coordination meetings included in this sub-task  Proposed sanitary sewer line sizes to be determined by external contract  Existing sanitary sewer lines will be removed  Proposed improvements will follow the existing alignment and basin configuration

Sanitary Sewer Design. This task includes design and preparation of documents for the 30%, 60%, 90% and final submittals. This project will replace or relocate sanitary mains, service laterals, manholes and associated appurtenances. If applicable, armoring of existing pipelines will be considered as an alternative to replacement. Phase 1 work includes: • Approximately 50 linear feet of new sanitary sewer main west of the Bear Creek / ▇▇▇▇▇▇▇▇▇ / ▇▇▇▇▇▇▇ intersection on Bear Creek Rd. • Approximately 350 linear feet of new sanitary sewer main east of the Bear Creek / ▇▇▇▇▇▇▇▇▇ / ▇▇▇▇▇▇▇ intersection on Bear Creek Rd. • Approximately 50 linear feet of new sanitary sewer main south of the Bear Creek / ▇▇▇▇▇▇▇▇▇ / ▇▇▇▇▇▇▇ intersection on ▇▇▇▇▇▇▇▇▇ ▇▇. • The City will specify new pipeline diameters. Hydraulic analysis is not included. Assumptions: • Sewer main size to be provided by the City of Bend • Proposed sewer improvements to follow existing alignment • New manholes to be Xypex lined following City of Bend Design Standards • Existing manholes will not be examined for corrosion • No waterproof lining of existing manholes • Subconsultant shall prepare for and attend up to ten (10) internal design coordination meetings, one (1) hour in length with up to two (2) Consultant team members in attendance.

Sanitary Sewer Design. Complete 60%-90%-100% plans, specifications and estimate for sanitary sewer that generally includes the following assumptions: ▪ No more than 170-LF of 16” ductile FM removal or replacement to eliminate the ARV and associated high point. Coordination with ▇▇▇▇▇▇ to determine optimal location. ▪ 100-LF of Wall Street 4” force main from Pioneer Pump Station to tie into new gravity sewer. ▪ No more than 1400-LF of Olney Avenue Gravity Main, that will be 30” and 36” per the recommendations of “Scenario 2 – Shortened Forcemain” of the ▇▇▇▇▇▇ 8-9-2023 Olney Sewer Analysis report. Size is determined by City modeling consultant. This will accept flows from upstream gravity mains as well as the 16” and 4” force mains. ▪ For bypass and constructability reasons, the new 30/36” sewer main will likely not follow the existing sewer alignment to maintain service throughout the construction period. Maximum downtime for Westside Pump Station is 30 minutes during nighttime low-flow hours. There is no ability to maintain a shut down during daytime hours. ▪ Elimination of inverted siphon. ▪ Bored railroad crossing, assumed length of over 100 LF to case the entire BNSF right of way. It is understood that pipe bursting won’t work for the existing 26” casing as it is a casing (material unknown) installed in bedrock. Consider if the existing sewer casing could be used for the watermain. Many unknowns associated with this, such as what is in the annular space. If grout or blow sand, likely the pipe cannot be removed. Specialized subconsultant has been included, see subtask 12.2. ▪ See requirements described in section 7 above for the bypass pumping plan and 00490 specification. ▪ Gravity main tie in will be to the existing 30” sewer at the 2nd/Olney intersection. Based on 9-7- 2023 meeting with City and ▇▇▇▇▇▇, existing Manhole CMH007914 will need to be replaced as it will have a 36” main coming in from the west, a 30” main from the south, and a 30” main (current size) out to east and will need to accommodate a future 42” to the east. A commercially available precast manhole may not work for multiple pipes this size and a cast in place structure may be required. We have included time for a structural design of a cast in place structure. ▪ A sewer bypass plan will be required for the replacement of CMH007914. ▪ Complete design review meetings after 60% and 90% submittals. ▪ Replacement of up to eleven (11) gravity sewer service lines. ▪ Design the connections to the existing side s...