HomeMy WebLinkAboutBrown & Caldwell- Jim Bachhuber CITY OF OSHKOSH
DEPARTMENT OF PUBLIC WORKS
215 CHURCH AVENUE, P,O.BOX 1130,OSHKOSH,Wl 54903-11.30
PHONE: (920)236-5065 FAX(920)236-5068
LETTER OF TRANSMITTAL
To: Mr,Jim Bachhuber Date: nAEst 8, 2018
Brown and Caldwell Subject: Executed Contract Amendment for
....... 8383 Greenway Boulevard, Suite 600 TID #34 and #35 Storm Water Support
Middleton, WI 53562
-----------
Please find: Z Attached F-1 Under Separate Cover
E] Copy of Letter ❑ Contracts Z Amendment ❑ Report ❑ Agenda
❑ Meeting Notes ❑ Photos ❑ Mylars ❑ Change Order ❑ Plans
❑ Specifications ❑ Estimates ❑ Diskette ❑ Zip Disk F-1 Other
—Quantqy—___ Description
1 Executed Contract Amendment
.............
These are being transmitted as indicated below:
n For Approval Z For Your Use ❑ As Requested ❑ For Review&Comment
Remarks:
Enclosed is the executed contract amendment for the 'l"ll) #34 and #35 storm water support.
If you have any questions, please contact us.
City Clerk's Office—Original
cc: —File—Original Signed: ...............
Tracy L. or or
hEnginecrin8\2018 CONTRACYS\18-14 Oshkosh Ave AreaVroject-,infonnation\Contract li)ftj\Coi)sttitaiit-Contractor Agreements\Browrl&Caldwell\B&C L(Yr�Executcd CA PvrlD
434# SW Support_8,8-18.docx
AMENDMENT NO. 1
The CITY OF OSHKOSH, hereinafter referred to as CITY, and BROWN AND CALDWE L.L, 8383 Greenway
Boulevard, Suite 600, Middleton, WI 53562, hereinafter referred to as the CONSULTANT, entered into an agreerrient for
TID#34 AND#35 STORM WATER SUPPORT oil April 27,2018.
Paragraph C in ARTICLE XII. PAYMENT included the provision that costs for additional services shall be
negotiated and set forth in a written amendment to this AGREEMENTexeClAted by both parties prior to proceeding with
the work covered Linder the subject amendment,
THEREFORE, the CITY and the CONSULTANT agree to insert the following paragraph after the first paragraph
in ARTICLE 111, SCOPE OF WORK:
The CONSULTANT shall provide the services described in the CONSULTANT's Exhibit A —Scope(fSerzfices and
Compensation dated July 6, 2018.
The CITY and the CONSULTANT further agree to insert the following bullet point after the first bullet point in
Paragraph A of ARTICLT XII. PAYMENT:
• Payment for Amendment No. I shall be a Time and Materials Surn not to exceed $11,944 (Eleven
Thousand Nine Hundred Forty Four Dollars).
All other terms contained within the April 27,2018 agreement remain unchanged and in effect.
In the Presence of: CONSULTANT
By:
(Seal of Consultant
if a Corporation (Specify Title)
By:
(Specify Title)
CITY OF OSHKOSH
By: =�
(Witness) Mark A. Rohloff,CityManag r
And: . ;%
(Witness) Parnel a R. Ubrig,City CIere
APUCIVED: I hereby certify that the necessary provisions
have been made to pay the liability which
which will accrue under this Agreement.
tornk—'r T
City Comptroller
1:\Enginecring,\2018 CONTRA(°1:S\18-1A Oshkosh Ave lnfo\Cm5ultant- Page I of I
Contractor AgrLLments\Biuwn&Cakhvell\18-14 B&C CA#1-11 D 434 435 SW Support_7-6-18.docx
Exhibit A— Scope of Services and Compensation
Amendment#1 to TID #34 & #35 Stormwater Support
Brown and Caldwell Project # 152187
City of Oshkosh Purchase Order# 180700 RECEIVED
July 6, 2018
JUL -6 2018
DEFT OF PUBLIC WORKS
OSHKOSf-1, WISCONSIN
&o e: This Exhibit A documents additional tasks requested of Brown and Caldwell (BC) by the
City of Oshkosh (City) for services under the TID #34 # Stormwater SLIPPort project (City
Authorization Dated May 3, 2018;BC Project# 152187) agreement dated April 27, 2018. All
terms and conditions from that agreement remain in effect for the work and budget described in
this Amendment#1.
Task#9: Additional Hydrologic &Hydraulic Modeling
BC will update the proposed conditions hydrologic and hydraulic model (XPSWMMTm) for the
TID #34 and#35 project area. Updates to the model will include:
• The TID #35 (Moeller Street / Westfield Street) final storm sewer design, as provided by
the City.
• The former golf course pond system equalization pipe design, as provided by the City.
• The TID #34 (Oshkosh Corporation Global Headquarters) wet detention basin design, as
provided by the City. This BMP was previously a prairie treatment system.
The model will be executed for the for 10-, 25-, and 100-year, 30-minute critical duration storm
events (with rainfall depths and distributions from the Midwest Climate Center Bulletin 71) and for
the 1-, 2-, 10-, and 1 00-year, 24-hour storm event with rainfall depths and distributions consistent
with City of Oshkosh Municipal Code Chapter 1.4. The results of the analysis will be summarized
(using graphical and tabular formats) and provided to the City. Graphical maps (2D output from the
XPSWMM"' modeling) of the flooding extent in the study area will be prepared for the 10-year and
1 00-year, 24-hour storm events.
Tabular results will include peak water surface elevations at key locations in the model and pump
run-time information for all events analyzed. Tabular results will include the runoff volumes 1-, 10-,
and 100-year, 24-hour storm events discharged from TID #34 and to the stormwater water quality
BMPs designed for Moeller St and Westfield St. The output file for an XPSWMM"' model runs will
be provided in their standard text format. Copies of the input/output XPSWMM"1 model runs will
be provided in XpSWMMT1 standard read only export format.
Task#10: Moeller Street /Westfield Street Prairie Treatment System Water Quality
Modeling
BC will develop a WinSLAMM model to estimate the average annual pollutant reduction for TSS and
TP for the proposed Moeller Street /Westfield Street Prairie Treatment Systems. To the extent
possible, the model will be consistent with the requirements of current WDNR guidance documents,
The City will provide design information including design plans and the design TSS reduction the
Prairie Treatment System will achieve. WinSLAMM modeling will be used to estimate the annual
runoff volume passing through the treatment system and the annual runoff volume that bypasses the
treatment system based upon the design information provided by the City.
TID 3435 Amendment I—final-2018-7-06—Q Paget of
Exhibit A— Scope of Services and Compensation
Amendment#1 to TID #34 & #35 Stormwater Support
Brown and Caldwell Project# 152187
City of Oshkosh Purchase Order# 180700
July 6, 2018
Task#11: TID #34 Wet Detention Basin Stormwater Modeling Report
A stormwater modeling report will be prepared to document the modeling of the TID #34 wet
detention basin. The report will document the water quality modeling and the hydrologic and
hydraulic modeling completed as part of this project. The report will be prepared such that the City
may use it as part of a Stormwater Notice of Intent (NOI) submittal for construction of the TID
#34 wet detention basin. Included in the report will be a brief narrative of the modeling, model
input/output, and supporting figures.
A draft report will be prepared and provided to the City for review. Following review, the report will
be finalized and a final report delivered to the City. The final report will be delivered as an Adobe
Acrobat Portable Document Format (pdo.
Task#12: TID #35 Stormwater Modeling Report
A stormwater modeling report will be prepared to summarize the modeling of the TID #35
stormwater system. The report will document the water quality modeling and the hydrologic and
hydraulic modeling completed as part of this project. The report will be prepared such that the City
may use it as part of a Stormwater Notice of Intent (NOI) submittal for construction of the Koeller
Street and Westfield Street extensions. Included in the report will be a brief narrative of the
modeling, model input/output, and supporting figures.
A draft report will be prepared and provided to the City for review. Following review, the report will
be finalized and a final report delivered to the City. The final report will be delivered as an Adobe
Acrobat Portable Document Format (pdo.
Schedule
BC anticipates initiating the effort included in this amendment by July 6', 2018. BC will commence
work immediately after the City issues a written (email) Notice to Proceed. A draft TID #35
stormwater modeling report will be provided to the City by July 16, 2018, of ten (10) calendar days
after. the City issues a written Notice to Proceed and provides all needed data to BC)whichever date
is later. A. draft TID #34 wet detention basin stormwater modeling report will be provided to the
City by July 23, 2018, or seventeen calendar days after the City issues a written Notice to Proceed.
Interim information will be provided to the City as requested to meet the City's project needs. Final
reports will be provided to the City three (3) days after review comments are received.
TID 3435 Amendment 1—final-2018-7-06—Q Page 2 of 3
Exhibit A—Scope of Services and Compensation
Amendment #1 to TID #34 & #35 Stormwater Support
Brown and Caldwell Project# 152187
City of Oshkosh Purchase Order # 180700
July 6, 2018
Budge
Task Estimated Estimated Estimated
# Task Description Budget TID #34 TID #35
Cost Cost
9 Additional Hydrologic &Hydraulic Modeling $3,288 67% 33%
10 Moeller Street / Westfield Street Prairie $2,148 0% 100%
Treatment System Water Quality Modeling
11 TID #34 Wet Detention Basin Stormwater $3,254 100% 0%
Modeling Report
12 TID #35 Stormwater Modeling Report $3,254 0% 100%
Total $11,944
Current contract Amount: $23,245
Amendment#1: $11,94
Amended Contract Amount: $35,189
Assumptions for Work Conducted Under Amendment#1:
1. The City will provide design drawings (PDFs) of all elements to be included in the modeling.
The files for all elements will be provided prior to start of the work. The following design
plans will be included:
a. Moeller Street Westfield Street storm sewer.
b. Moeller Street Westfield Street prairie treatment systern.
c. Former golf course pond system equalization pipes.
d. TID #34 wet detention basin.
2. The scope of work assumes there are no changes to the drainage areas or drainage area
hydrologic conditions to each of the items identified under Assumption 1 a-d.
3. The scope of work includes one (1) iteration of hydrologic and hydraulic modeling.
Evaluations of alternative designs are not included as part of this scope of work,
4. The hydrologic and hydraulic analysis conducted does not include inlet capacity analyses, inlet
leads, privately-owned storm sewers,privately-owned structural management measures, or the
prairie treatment systems in Moeller Street/Westfield Street.
5. The scope of work does not include preparing permit applications. Stormwater reports will be
prepared to supplement the City-prepared applications.
6. No survey or other field work is budgeted.
7. Data required for stormwater analyses will be provided to BC at no cost to the project.
8. The scope and budget does not include any face-to-face meetings with the City or other
governmental agencies.
9. All work will be conducted in 2018.
TID 3435 Amendment 1—final-2018-7-06—v2 Page 3 of 3