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HomeMy WebLinkAboutresolution.council.126-14 RESOLUTION # 126 (Series of 2014) A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ASPEN, COLORADO, APPROVING A CHANGE ORDER TO THE SMUGGLER/HUNTER SURFACE DRAINAGE MASTER PLAN, AUTHORIZING THE CITY MANAGER TO EXECUTE SAID CHANGE ORDER ON BEHALF OF THE CITY OF ASPEN, COLORADO. WHEREAS, URS Corporation is currently under contract to the City to complete the Smuggler/Hunter Surface Drainage Master Plan; and WHEREAS, the City wants to change order URS Corporation's contract to update the project work to date to incorporate newly adopted rainfall data; and NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF ASPEN, COLORADO, That the City Council of the City of Aspen hereby approves Change Order #01 to URS Corporation's contract with the City to complete the Smuggler/Hunter Surface Drainage Master Plan, a copy of which is annexed hereto and incorporated herein, and does hereby authorize the City Manager to execute said agreement on behalf of the City of Aspen. INTRODUCED, READ AND ADOPTED by the City Council of the Ci of Aspen on the 13th day of October, 2014. r Ste en Ska ron, Mayor I, Linda Manning, duly appointed and acting City Clerk do certify that the foregoing is a true and accurate copy of that resolution adopted by the City Council of the City of Aspen, Colorado, at a meeting held, October 13, 2014. Linda Manning, Ci Clerk CHANGE ORDER City of Aspen No PROJECT: DATE OF ISSUANCE: OWNER:Ct. -IAspen p'ah SaM4 CONTRACTOR: [AK N V pO V4i O 1n OWNEWs Project No. oL 4 ENGINEER: ENGINEER'S Project No. 7i22-y2Gj You are directed to make the following changes in the Contract Documents. Description: u�dak� ov i ors 4-tne- SpM F Yo;crck y.�ok,{- Co�r.=,i+� 4o da+c, +0 1lncolr ate. ,, �}uf N AA r~i�(�tl d�tfq. Add tACY os 4V Purpose of C ange Order: UI?sl GV UM NG (,fi / N, 1rt ll�Gl 0.,5 tLl -f to U\g . New rra�v►fctll �a�a avta re.JJt"-I-I -b itiCtlj -w.ai-GV ��tt�, s��v�os. Attachments:(List documents supporting change) �Xln bi A ' Wovk � EjAr%lLo4 B : Cos- CHANGE IN CONTRACT PRICE: CHANCE IN CONTRACT TIME: Original Contract PricAj k L o° UltAt_� 3 G 'ZO 13 Original Contract Time: days or pate Previous Change Order No Net Change from previous to No. h "4F Change Orders days Contract Price prior to Contract Time prior to this Change Ordcr this Change Ordcr $ Rd wit -sSML L days or date Net Increase(decrease) Net Increase(decrease) of this Change Order this a o of Changc Order days Contract Price with all Contract Time with all approved Change Orders approved Change Orders ZO, days or dfite "PRO APPR ' / APP OVED: by- by: C�/x� y' � by. • Finance Director Owner Co_,:U or�e r J,jaoc"._ MCM9 Col Attachment A Change Order, Scope of Work, and Rates THIS October 3, 2014 April Long, PE, CPESC Stormwater Manager, Engineering Department City of Aspen 130 South Galena Street Aspen, CO 81611-1975 VIA EMAIL Reference: Smuggler/Hunter Surface Drainage Master Plan Project#2012-041 Subject: Revised Scope& Cost Estimate for Change Order#1 —Update Rainfall, WQCV Scenario,and Project Completion Dear April: URS is pleased to present the enclosed revised Scope of Work (Exhibit A) and Cost Estimate (Exhibit B) for the requested additional professional engineering services for the Smuggler/Hunter Surface Drainage Master Plan (SDMP). Exhibit A presents our detailed understanding of the services needed. The level of effort and costs for the identified tasks are shown in Exhibit B. Please note that the exhibits are organized based on the tasks identified in the original SDMP project. The total level of effort presented in Exhibit B is approximately $74,331. When accounting for the $20,686 remaining in the original project budget,the change order cost is approximately $53,645. URS is ready and available to begin work once we receive written authorization from you. I and the rest of the URS team look forward to working with you and Aspen's Engineering Department to complete the SDMP. Thank you for the opportunity to provide continued professional services to the City of Aspen. If you have any questions regarding the enclosed documents, please contact me at 303-740-2715. Sincerely, URS Corporation C 0�6 5 Kimberley A. Pirri, PE, CFM Project Manager Enclosures cc: file KAP/Imp URS Corporation 8181 East Tufts Avenue Denver,CO 80237 Tel:303.694.2770 Fax:303.694.3946 Change Order#1—Smuggler/Hunter Surface Drainage Master Plan—EXHIBIT A October 3,2014 Page I of 4 Smuggler/Hunter Surface Drainage Master Plan Project#2012-041 for the City of Aspen,Department of Engineering—Stormwater Program Change Order#1—Update Rainfall,WQCV Scenario,and Project Completion EXHIBIT A SCOPE OF WORK URS is pleased to submit this Scope of Work(Scope)for additional professional engineering services for the Smuggler/Hunter Surface Drainage Master Plan(SDMP). Additional services covered by this scope include: • Update portions of the SDMP project work completed to date to incorporate updated NOAA rainfall information for the City of Aspen. • Complete evaluations of regulatory scenarios based on infiltration of the Water Quality Capture Volume(WQCV)to determine efficacy in reducing basin flows. • Complete the remaining SDMP project efforts through final submittal of the project report and acceptance by City Council. These additional services follow URS' initial work on the SDMP,which was approximately 80% completed in September 2013, under the Agreement for Project 2012-041, dated June 4, 2012. The services described in this change order incorporate a revision to the regulatory scenarios proposed in a previous change order requested by the Stormwater Manager during teleconferences in March 2014 as well as the rainfall update and project completion services requested on June 11, 2014. The National Oceanic and Atmospheric Administration(NOAA)published an updated rainfall atlas, NOAA Atlas 14,Volume 8 Version 2.0 for the Midwestern United States, in April 2013. NOAA Atlas 14 includes updated rainfall depths that have been reduced as compared to the published values in Aspen's April 2010 Urban Runoff Management Plan(URMP). Reduction in rainfall depth impacts the rainfall-runoff analyses, mudflow analyses, and alternatives analyses previously completed for the project, so all of these analyses, along with the related reporting and figures will need to be updated. Required updates are described in detail below(Tasks 2, 3, 5,5.2, and 6). Aspen would like to know whether control of runoff within the analyzed basins,through infiltration of the WQCV would result in lower basin flows for the 2-, 5-,and 10-year design events,thereby resulting in fewer proposed public infrastructure improvements. Aspen has requested that URS evaluate this scenario using the rainfall runoff analyses for the Neale Avenue basin. One new task has been added for these efforts and the work required is described below(Task 8). The additional work efforts needed for completing the SDMP are based on URS 2014 billing rates. This Scope of Work is organized based on the tasks included in the original SDMP project scope, along with the new tasks described above. The level of effort and costs for each of the tasks identified below are shown in Exhibit B—Cost Estimate. WORK EFFORTS Task 1 —Define Existing Stormwater Management Infrastructure This task was 100%completed under the original project scope. No revisions or updates are needed based on the NOAA Atlas 14 rainfall information. Task 2—Design Capacity Evaluation The hydrologic analyses prepared for the six drainage basins within the study area will need to be updated to incorporate the NOAA Atlas 14 rainfall data. URS will use the Colorado Urban Hydrograph Procedure (CUHP)and InfoSWMM models prepared under the original project scope. To update the analyses,the NOAA Atlas 14 rainfall values for the for the 2-, 5-, 10-, 25-, 50-,and 100-year 1-hour precipitation Change Order#1 Smuggler/Hunter Surface Drainage Master Plan—EXHIBIT A October 3,2014 Page 2 of 4 events will be input into the existing CUHP models. The resulting updated hydrographs will then be input into the InfoSWMM models for each basin to develop the updated baseline/existing conditions capacity evaluation and identify problem areas. The InfoSWMM results will be used to update the HEC- RAS and FLO-21)floodplain analyses for the applicable basins. Included in this effort, URS will update the basin naming convention throughout the models. Based on Aspen's previous guidance,this effort was tabled. The updated NOAA Atlas 14 rainfall information does not impact all of the completed SDMP work efforts. The following items do not warrant revision: • Basin characteristics • Water quality • Basin routing elements • Snow melt analyses Task 3—Debris &Mud Flows The debris and mudflow analysis is based on the routing of bulked hydrographs generated from the clearwater hydrographs produced in Task 2. URS will reuse the FLO-213 models prepared under the original project scope to update the mudflow analyses. The updated CUHP hydrographs will be input into the previously prepared FLO-21)models and the models will be rerun. This scope does not include revising model parameters or the gridded topography. Task 4—Mine&Irrigation Flows This task was 100%completed under the original project scope. No revisions or updates are needed based on the NOAA Atlas 14 rainfall information. Task 5—Improvement Recommendations The updated design capacity evaluations are expected to be significantly different than those based on the original evaluation. The alternative improvement recommendations will need to be completely re- evaluated. URS will attempt to reuse as much of the previously prepared modeling as possible;however, we anticipate having to create at least one new alternative in each basin, particularly to evaluate routing of proposed systems to eliminate easements. Consideration will be given to eliminating easements as much as practicable given the high cost of obtaining easements determined during this task under the original project scope. Task 5.2—Upgrade to 10-year Event The proposed improvement recommendations re-evaluated in Task 5 will also need to be re-evaluated for upgrading to the 10-year design event versus the 5-year. Task 6—Master Plan Report Sections 1 through 4 of the SDMP Report describing the results of Tasks 1 through 4 were completed and previously submitted at the 50%submittal. These sections need to be revised to incorporate the updated analyses results, including all tables, maps,and figures. URS will incorporate previously received 50% review comments from Aspen. After completing these revisions, URS proposes resubmitting the 50% submittal so that Aspen can provide review and concurrence prior to completing the updates to the alternative improvement recommendations. We will present the results of Task 8 (described below) in interim form(results tables)for review with the 50%submittal. Section 5 of the SDMP report,presenting the results of the Alternatives Development for Improvement Recommendations was 75%completed, with results tables, Engineer's Opinions of Construction Cost, and Suggested Plan of Improvements figures provided to Aspen as part of an interim submittal. The previously completed portions of Section 5 will need to be revised, including all the results tables, Opinions of Cost and figures, and remaining documentation will be prepared. Incorporation of Section 5 into the SDMP report,along with the related tables, maps,and figures, constitutes the 90% submittal. Change Order#1—Smuggler/Hunter Surface Drainage Master Plan—EXHIBIT A October 3, 2014 Page 3 of 4 This task also includes the work efforts needed to incorporate documentation of the site level runoff control analyses discussed in detail in Task 8 into Section 5 of the SDMP report. The 100%submittal will incorporate Section 6 into the report,describing the Conceptual Design based on the selected improvement recommendations and including conceptual plans for the improvements. We will prepare a 100%Draft submittal for review and concurrence by Aspen. Comments on the draft submittal will be incorporated into the 100%Final submittal. URS underestimated the total level of effort required to prepare the report to the level of detail requested by Aspen in the original project estimate. The level of effort included in the cost estimate(Exhibit B) includes the additional hours needed to complete the SDMP. The additional level of effort is estimated to require an additional 80 hours. Task 7—Project Management& Meetings Additional project management time is needed based on the extended duration of the project. The level of effort included in this task assumes the project is anticipated to be completed within four months from Notice to Proceed. URS' expenditure estimates are based on this duration. URS also proposes to repeat the 50%Submittal Review Meeting. Also included in the level of effort are three progress meetings held via teleconference. The 90% Submittal Review Meeting and City Council work session were programmed into the original scope of services. Per the Stormwater Program Manager,Aspen will conduct an online public comment period in lieu of a public meeting to present the alternatives. URS will provide maps for Aspen to publish on the City's Open City Hall website for use in obtaining online feedback from the community. Aspen will provide copies of feedback received to URS. Task 8-Neale Avenue Basin-Water Quality Capture Volume Analysis for Reduction of Basin Flows URS will perform a pilot study using the Neale Avenue Basin to evaluate whether managing WQCV at the site level will reduce total basin flows and thereby reduce needed public stormwater infrastructure improvements by. The efficacy of managing WQCV will be evaluated by calculating the WQCV using the criteria provided in Aspen's URMP. The WQCV volume will be evaluated over 25, 50, 75,and 100% of the impervious area of each subbasin for the 2-, 5-,and 10-year design events by adding the capture volume to the existing impervious storage depth in CUHP for each sub-basin to generate reduced flows that will then be input into InfoSWMM. Results of this evaluation will be reported to Aspen in interim form with the 50% Submittal. The scope of work for this task only includes performing the WQCV analysis for the Neale Avenue Basin. If the pilot study shows that this method reduces flows sufficiently to reduce proposed infrastructure improvements and Aspen desires completion of the analysis for the remaining basins,the associated work efforts will be covered under a separate change order. A description of the WQCV pilot study will be incorporated into the Alternatives description(Section 5)of the SDMP report for the Neale Avenue Basin. If the evaluation is subsequently completed for the other basins,the description will be incorporated into the general discussion in Section 5. DELIVERABLES: The following deliverables are anticipated: 1. 50%Submittal • SDMP Report text,tables, and figures, Sections l through 4(3 hardcopies & 1 PDF) • Results tables for Task 8 (3 hardcopies & 1 PDF) Change Order#1—Smuggler/Hunter Surface Drainage Master Plan—EXHIBITA October 3,2014 Page 4 of 4 2. 90% Submittal • SDMP Report text,tables and figures, Sections 1 through 5 (3 hardcopies & 1 PDF) 3. 100%Draft Submittal • SDMP Report text,tables, and figures, Sections 1 through 6 and Appendices (3 hard copies; 1 full, compiled, and indexed PDF; MS Word files) 4. 100%Final Submittal • SDMP Report text,tables, and figures, Sections 1 through 6 and Appendices(10 hard copies; 1 full, compiled, and indexed PDF; 1 web-ready PDF,by section; MS Word files) • Electronic input and output data—CUHP, InfoSWMM, HEC-RAS, FLO-213 • Electronic GIS data—Stormwater inventory, basin delineations, soils, land use, InfoSWMM routing elements, HEC-RAS geometry data, FLO-213 data,terrain data • Electronic CAD data for conceptual improvements 5. Public Comment Period • Two maps of suggested plan improvements in PDF format, suitable for web publishing 6. Council Work Session(In-person attendance by URS Project Manager anticipated) • Two maps of suggested plan improvements, mounted on boards 7. 50%and 90%Review Meetings(In-person attendance by URS Project Manager anticipated), Progress Meetings(3 meetings-teleconference attendance by URS Project Manager anticipated) • Meeting Agendas(PDF) • Meeting Minutes(PDF) SCHEDULE URS estimates the project work described above will take approximately four months, including four review periods of approximately one week each for Aspen following submittals. Estimated completion is in February 2015. This schedule is dependent on timely responses by Aspen. Should the project proceed beyond March 2015,an additional change order to revise billing rates may be requested by URS. ASSUMPTIONS This scope of work has been prepared based on the following assumptions: • URS assumes the deliverables listed above are all those required for the project. • URS assumes the project will be completed in approximately four months (February 2015). • URS assumes no other updates will be needed to the analyses performed for this project, including but not limited to construction of storm sewer that may have occurred during the project. • Work efforts included herein are based on expenditures to date needed for meeting Aspen's requirements and for completing the work efforts identified within this scope. • All work efforts associated with this scope are limited to the hours indicated in Exhibit B. • Hourly billing rates shown in Exhibit B are based on the 2014 URS Colorado Fee Schedule— Engineering Services. • The Other Direct Costs shown in Exhibit B include a 10%markup, consistent with the original 2012 fee estimate for this project. • No subcontractors are needed to complete the remaining work. • In-person meeting attendance includes eight hours of time per person for travel to Aspen from URS' offices in Denver. Exhibit 8-Cost Estimate Smuggler/Hunter Surface Drainage Master Plan,City of Aspen,Colorado. Change Order 81-Update Rainfall,WQCV Scenario,&Project Completion October 3,2014 `w o wI'I m E a ° v w 3 m o w _o c >' E (a Q ^oo o ° m on v 3 E 6 ma eo w c c C 2 LL a m w U ob v c v a > > m c 071 > 2 m•. a a m O O aci a m Z M c E E N _ U O N 40 E V1 lD r` W oo >- U Total Y G Y Y Y Y O Y Y Hours 2014 Rate Unit a a a Y Y Y N ,p a a w a a a a v TOTAL Labor Classification Consultant 1 34 $175 $/hr 0 10 0 0 24 0 0 $ 5,950 Project 2 130 $138 $/hr 4 0 �, 8 0 50 64 4 $ 17,940 Staff 80 $116 $/hr a 12 32 - 16 4 8 0 8 $ 9,280 Staff 1 214 $84 $/hr =w 44 0 a w 60 16 70 4 20 $ 17,976 Assistant/Support Staff 6 60 $101 $/hr o " 0 0 8 0 0 60 0 0 $ 6,060 Assistant/Support Staff 5 80 $91 $/hr Y 8 4 x 24 0 40 4 0 $ 7,280 N .a Assistant/Support Staff 4 78 $79 $/hr ~ 0 0 ~ 2 0 0 56 22 0 $ 6,162 Assistant/Support Staff 2 36 $58 $/hr 0 0 0 0 32 4 0 $ 2,088 Labor Hours Total 712 Labor Hours Subtotal 0 68 46 0 108 20 340 98 32 Labor Subtotal $ $ 6,368 $ 5,826 $ $ 10,184 $ 1,808 $ 33,888 $ 11,502 $ 3,160 $ 72,736 Markup Multiplier Unit Other Direct Costs External Reproduction 1.10 cost+ $ $ $ $ $ $ $ $ $ - $ - Mileage 1.10 cost+ $ Is $ $ $ $ $ - $ $ $ Express Mailing Services 1.10 cost+ $ $ $ $ $ $ $ 220 $ - $ $ 220 Travel(Lodging,Meals,Parking,Fuel) 1.10 cost+ $ $ $ $ $ $ $ - $ 825 $ $ 825 Car Rental 1.10 cost+ $ $ $ $ $ $ $ - $ 550 $ $ 550 Expenses Subtotal $ $ $ $ $ $ $ 220 $ 1,375 $ $ 1,595 GRANDTOTAL $ $ 6,368 $ 5,826 $ $ 10,184 $ 1,808 $ 34,108 $ 12,877 $ 3,160 $ 74,331 Less Remaining Current Contract Value $ (20,686) Assumptions: TOTAL CHANGE ORDER $ 53,645 1.Hourly billing rates are based on the 2014 URS Colorado Fee Schedule-Engineering Services. 2.Other Direct Costs includes a 10%markup,consistent with the original 2012 fee estimate for this project. 3.No subcontractors are needed to complete the remaining work. 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