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Other/Miscellaneous
FLOODPLAIN
• Any portion of the proposed project that is outside WSDOT ROW limits and located within a regulated floodplain under the jurisdiction of the City of Puyallup shall adhere to the requirements of Puyallup Municipal Code, Chapter 21.07 Flood Damage Protection.
- Provide supporting documentation to ensure that there is no new, or increased, areas of flood inundation as a result of the proposed project. If less than 1:1 compensatory storage is proposed, the written documentation shall include a hydrologic and hydraulic analysis to determine any effects on floodplain storage capacity, increased flood heights, or increased velocities.
- Provide supporting documentation of ESA compliance for any work within the regulated floodplain.
- Where development is proposed in the floodway, provide an engineering analysis indicating no net rise of the Base Flood Elevation.
• Similarly, any portion of the proposed project that is wholly inside WSDOT ROW limits and located within a regulated floodplain shall be designed to prevent, and/or mitigate, flood impacts to the City of Puyallup’s constituents. Provide supporting documentation and statement of acknowledgement that the project is compliant with the National Flood Insurance Program (NFIP).
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Other/Miscellaneous
STORMWATER/ EROSION CONTROL:
• For any portion of the proposed project that is outside WSDOT ROW limits and within the jurisdiction of the City of Puyallup, the Stormwater Design shall be in accordance with PMC Chapter 21.10 and the Department of Ecology (Ecology) Stormwater Management Manual for Western Washington (aka “Ecology Manual”) as adopted by the City Council at the time of project application.
• The applicant is responsible for submitting a preliminary stormwater management site plan which meets the design requirements provided by PMC Section 21.10 and Ecology Manual. The preliminary stormwater site plan (PSSP) shall be submitted with the shoreline application to ensure that adequate stormwater facilities are anticipated prior to development. The preliminary stormwater site plan shall reasonably estimate the quantity of stormwater runoff and the application of On-site Stormwater Management BMPs for the proposed development.
• Refer to City Standards, Section 200 for Stormwater System Requirements within the City jurisdiction. [PMC 17.42]
• The applicant shall complete the stormwater flowchart, Figure 3.1, contained in Ecology’s Phase II Municipal Stormwater Permit, Appendix I. The completed flowchart shall be submitted with the preliminary stormwater site plan and highlight the Minimum Requirements (MR) triggered by the project thresholds.
• If the applicant proposes a direct discharge connection to the Puyallup River, the associated conveyance system shall be designed in accordance with the requirements of PMC 21.10.04, City Standards Section 204.2, and the Ecology Manual, Volume I, Section 3.4.7 and List #3 of MR5. Specifically:
- The project site must be drained by a conveyance system that is comprised entirely of manmade elements and extends to the ordinary high water mark of the Puyallup River;
- The conveyance system between the project site and the Puyallup River shall have adequate conveyance capacity to convey discharges from the proposed (post-development) project, in addition to the discharges associated with the existing basin tributary to the outfall;
- All such flows shall remain within all catch basin or manhole rims for a continuous model simulation associated with the September 17, 1969, storm event assuming no backflow influence from the Puyallup River and shall provide greater than one cfs remaining capacity of the system.
- The discharge will not cause, or aggravate, downstream flooding problems
- The discharge does not reduce natural flows to other streams or wetlands
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Other/Miscellaneous
THE FOLLOWING CONDITIONS WILL BE ASSOCIATED WITH THE FUTURE CIVIL PERMIT APPLICATION:
PERMITTING
• Any portion of the proposed project that is outside WSDOT ROW limits and within the jurisdiction of the City of Puyallup will require a permit issued by the City Engineering Department. WSDOT, or the contractor obtaining the permit on behalf of WSDOT, will be required to post bonding, license, and insurance pursuant to Puyallup Municipal Code, Title 11. (NOTE: On the SR167 Puyallup River Bridge Replacement Project, a mutually agreed Construction Agreement was executed between WSDOT and the City as an alternative to the required bonding and insurance requirements of Title 11)
STORMWATER/ EROSION CONTROL:
• Development and redevelopment projects are required to employ, wherever feasible, Low Impact Development (LID) Best Management Practices (BMPs) to meet the design criteria set forth in PMC 21.10.190, the Ecology Manual Volume I, Minimum Requirement 5; Volume III, Chapter 3; and Volume V, Chapter 5.
• If infiltration facilities/BMPs are anticipated, the number of infiltration tests shall be based on the area contributing to the proposed facility/BMP, e.g., one test for every 5,000 sq. ft of permeable pavement, or one test for each bioretention cell.
• Preliminary feasibility/infeasibility testing for infiltration facilities/BMPs shall be in accordance with the site analysis requirements of the Ecology Manual, Volume I, Chapter 3, specifically:
- Groundwater evaluation, either instantaneous (MR1-5), or continuous monitoring (MR1-9), during the wet weather months (December 21 through April 1).
- Hydraulic conductivity testing:
i. If the development meets the threshold to require implementation of Minimum Requirement #7 (flow control); or, if the site soils are consolidated; or, if the property is encumbered by a critical area, then Small Scale Pilot Infiltration Testing (PIT) during the wet weather months (December 21 through April 1) is required.
ii. If the development does not meet the threshold to require implementation of Minimum Requirement #7; or, is not encumbered by a critical area; and is located on soils unconsolidated by glacial advance, grain size analyses may be substituted for the Small Scale PIT test at the discretion of the review engineer.
- Testing to determine the hydraulic restriction layer.
- Mounding analysis may be required in accordance with Ecology Volume III Section 3.3.8.
• Upon submission of the geotechnical infiltration testing, appropriate long-term correction factors shall be noted for any areas utilizing infiltration into the underlying native soils in accordance with the Ecology Manual, Volume III, Chapter 3. Provide the long-term infiltration rate calculation in the stormwater report.
• If the proposed project discharges to an adjacent wetland, the applicant shall provide a hydrologic analysis which ensures the wetland’s hydrologic conditions, hydrophytic vegetation, and substrate characteristics are maintained. See Ecology Manual Volume I, Minimum Requirement 8.
- Clarify how the wetland hydrology is being maintained. Provide hydroperiod analysis for each wetland in accordance with the DOE Manual, MR8 and Appendix I-C.
• Water quality treatment of stormwater shall be in accordance with the Ecology Manual, Volume 1, Minimum Requirement 6; and Volume 5, Runoff Treatment.
• At the time of civil permit application, all pipe reaches shall be summarized in a Conveyance Table containing the following minimum information and included in the TIR:
Pipe Reach Name Design Flow (cfs)
Structure Tributary Area Pipe-Full Flow (cfs)
Pipe Diameter (in) Water Depth at Design Flow (in)
Pipe Length (ft) Critical Depth (in)
Pipe Slope (%) Velocity at Design Flow (fps)
Manning’s Coefficient (n) Velocity at Pipe-Full Flow (fps)
Percent full at Design Flow (%)
HGL for each Pipe Reach (elev)
MISC:
• There are a number of existing publicly owned utilities within the proposed project limits and must be clearly identified on the project plans. Should fill need to be placed near or over the existing utilities, it shall not occur until after WSDOT and the City have determined that the utility is adequately protected from additional overburden and adequate maintenance access has been considered and provided.
• Existing public utilities that are in conflict with proposed project improvements shall be relocated as necessary to meet all applicable City, State, and Federal requirements.
• Existing private utilities (gas, telcom, cable, etc…) that are in conflict with City maintained right-of-way and utilities shall be relocated outside of the travelled road section, i.e., behind the curb under the sidewalk area.
• Cross sections may be required at various points along the property limits in accordance with City Standards Section 502 and 503 to ensure no impact from storm water damming or runoff. [PMC 17.42 & CS 502.1]
• At time of civil application, provide a truck route plan that shows the details of the truck route (both ingress and egress), type of trucks, number of trucks per hour, and time period during which trucks would access the site. Provide auto-turn documentation verifying that the contractor’s truck/trailers movements will not unduly interfere with existing traffic. A haul route agreement may be required to ensure adequate provisions are in place to address the potential impact any trucking activity may have on city right-of-way.
• At the time of civil permit application, the following notes shall be added to the first sheet of the TESCP:
-“At any time during construction it is determined by the City that mud and debris are being tracked onto public streets with insufficient cleanup, all work shall cease on the project until this condition is corrected. The contractor and/or the owner shall immediately take all steps necessary to prevent future tracking of mud and debris into the public ROW, which may include the installation of a wheel wash facility on-site.”
-“Contractor shall designate a Washington Department of Ecology certified erosion and sediment control leadperson, and shall comply with the Stormwater Pollution Prevention Plan (SWPPP) prepared for this project.”
-“Sediment-laden runoff shall not be allowed to discharge beyond the construction limits in accordance with the Project’s NPDES General Stormwater Permit.”
• Civil engineering plan review fee is $470.00 (plus an additional per hour rate of $130.00 in excess of 5 hours). The Civil permit shall be $300.00 and the inspection fee shall be 3% of the total cost of the project as calculated on the Engineering Division Cost Estimate form. [City of Puyallup Resolution No. 2098]
• Benchmark and monumentation to City of Puyallup datum (NAVD 88) will be required as a part of this project.
• All applicable City Standard Notes and Standard Details shall be included on any construction plans for this project. A copy of the City Standards can be found on the City’s web site under City Engineering, Development Engineering.
• Prior to Acceptance, Record Drawings shall be provided for review and approval by the City. The fee for this review is $200.00. Record Drawings shall be provided as follows:
- In accordance with City Standards Manual Section 2.3.
- Electronic version of the record drawings in the following formats:
1. AutoCAD Map 2007 or newer in State Plane South Projection
2. PDF
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Other/Miscellaneous
The currently proposed at-grade crosswalk on Levee Rd (with RRFBs & median island refuge) does not meet City engineering standards and will not be allowed. Based on the updated T2P crossing assessment, the undercrossing (option 4) would provide the safest pathway through the interchange. Per the “Criteria” section of this document, “Safety is the top-most criteria for designing a facility, specifically intersections, where more vulnerable users interact with vehicles traveling at higher speeds and with greater kinetic energy”.
A grade separated undercrossing would eliminate vehicle/pedestrian conflicts on Levee Rd, minimize operational impacts to the Meridian/SR-167 interchange, and would serve as a long-term solution to a high-volume regional trail system (and would be consistent with adopted WSDOT Target Zero safety goals & strategies). Based on the location of the undercrossing, the shoreline permit should include this scope of work.
We have requested the traffic team evaluate possible COP traffic signal interconnect with the new DDI signals (Intersection Control Evaluation Report). If this were to happen, not sure if there's existing infrastructure/conduit available along the Meridian Bridge to physically connect signals.
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