Morrisville UDO Administrative Manual - May 2020

Part 4. Appendices 4.5 Checklists

• Include any proposed requests for oversized line(s) and label as such. 4 Wastewater System

• Indicate projected sewer flow (gpd) (adf) for development submitted and verify consistency with Town’s Master Plan. List the total linear footage of proposed sanitary sewer line. Include this information in the site data table. • Provide sewer plan and profile (include pipe material, line size, length, slope, stationing, utility separations, ground elevation, and manhole inverts in, inverts out and top elevations, diameters). • Show existing and proposed easements for all sewer lines, indicate status of easement acquisition across any off-site properties. Verify easement width for proposed depth. • Show sewer line services and cleanouts (first cleanout required at the edge of the public easement or r/w) to each lot. Show service perpendicular to the main. • If a pump station is being considered, it is suggested you discuss this in advance with the Cary Utility Engineering staff. Specific information submittal needs are available on the Town’s website and by contacting staff. • Note and label each individual lot that cannot be served by gravity sewer. • Please clearly note on the plans any private sewer. This will require a private extension permit from the state. Additional information can be obtained on the State DWQ website. • Show extensions of sewer to all upstream areas within the gravity sewer basin. Include accompanying easement. • Label all manholes that are greater than 4’ in diameter. 5 Water System • Waterlines along major roadways shall be designed to meet the Town of Cary's Water system Master Plan. • Plan shall include plan and profile views. • All public water system must be designed to meet TOC Standard Specifications Section 06000. 6 Pre-treatment items • Locations of grease interceptors. Location of the multi-user interceptor may also be considered during site plan review. Grease traps and interceptors are not typically sized in the Utility Plan review stage of project development. However, grease interceptor location, size, design, and details of construction shall be approved by the Cary Public Works and Utilities Department’s Pretreatment Section before issuance of a Building Permit by the Town of Morrisville. This is accomplished during the building design and permitting phase of the project. More information is available here. • Locations of qualifying trash compactors (for grocery stores, cafeterias, apartment complexes, high rise facilities with food service, and other sites where compactors may be proposed), and associated drains to sanitary sewer and grease traps. More information is available here. • For plans including a swimming pool(s): These pools most likely include filter backwash. Please contact the Town of Cary, Utility Pretreatment Unit. 7 If the proposed development includes phases: • Submit a separate utility sheet(s) for each individual phase. Each phase will be required to have a separate water and sewer permit. • Where the sewer connection to existing Town of Cary collection system is conditioned upon the completion of any earlier phase(s), include a call-out note on the phased utility sheets stating that the sewer cannot be accepted until downstream sewer is connected to existing Town of Cary collection system that has been accepted. Do the same for any sewer that is dependent on non-existing sewer located in projects outside of this project that is under review. • Show waterline blow-off assemblies and upstream sanitary sewer manholes that are provided with sanitary sewer protection (std. detail 07000.17) at all phasing lines. • Include a written sequence phasing plan. 8 For each sewer and water main connection to be made to planned/existing mains that are, or to be, built outside the scope of this project, list which infrastructure actually exists at this time and which is planned infrastructure. Include the project numbers 9 Reclaimed Water • Design of the reclaimed water system should follow the standards in place. All public Reclaimed water system must be designed to meet TOC Standard Specifications Section 06500. Click here for specifications. • Provide information on pipe sizing and material. • Reclaimed Waterlines along major roadways shall be designed to meet the Town of Cary's Reclaimed Water System Master Plan: Click here for additional information. • Show air release valves on lines 6 inches and above. • Show locations of blow-off devices and their routing into the sanitary sewer.

Morrisville, NC

May 29, 2020

Administrative Manual

Page 4-35