HomeMy WebLinkAboutCarollo Engineers 2014-07-04; Amendment 4 2018-04-18COU NO 1314-231-A4
CITY OF UKIAH
AMENDMENT NO.4
TO AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES
DATED APRIL 18, 2018
TERMS AND CONDITIONS
All terms and conditions of the Agreement for Professional Consulting Services dated
July 4, 2014 shall remain in force and effect except as modified by this tWrd amendment.
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AUTHORIZATION
Upon execution of this amendment, service provider is authorized to provide the service described
under the Scope of Additional Work identified in this Amendment No. 4.
SCOPE OF ADDITIONAL WORK
Work authorized by this amendment shall include that work described in the
following Subject Letters:
1) Phases 1-3 Recycled Water Distribution System Project Budget dated January 26, 2018
2) Recycled Water System Additions/Revisions- Chlorine Contact Basin dated March 9, 2018
3) Recycled Water System Additions/Revisions- Engineering Services during Construction
(ESDC) RW Project Design Changes dated March 12, 2018
All subject letters are also referred to as Attachment 1. A copy of said work is included in this fourth
amendment.
COMPENSATION
Compensation for the performance of the additional work shall be made on a time and expense
basis at Consultant's customary fees. Expenses shall not exceed a maximum total cost of $336,367
for a revised total contract amount of $4,164,145
CAROLLO ENGINE
CITY OF UKIAH
BY: BY:
RINCIPAL SAqt S I COMO
CITY MANAGER
PRINT NAME DATE
bAf E
Amendment No 2 to Agreement for Professional Consulting Services
Attachment 1
Englneers...W vking Wonders W10i Water*
January 26, 2018
Mr. Tim Eriksen
City Engineer/Director of Publ is Works
City of Ukiah
300 Seminary Ave.
Ukiah, CA 95482
Subject: Phases 1-3 Recycled Water Distribution System Project Budget
Dear Mr. Eriksen:
As you and Tracy Clinton have discussed, the final design effort for the Phase 1-3 Recycled Water
Distribution System project exceeded the total amount of our contract, including amendments (excluding
the most recent amendment for engineering services dur ng construction (ESDC), Construction
Management, and the design of the Chlorine Contact basins). We have exceeded the design budget by
approximately $176,000. Carollo has absorbed $70,000 of the overage. We are requesting an amendment to
cover the remaining $106,000.
The $106,000 overage forwhich we are requesting reimbursement was expended for the following tasks
that either required a higher than anticipated level of effort or were out of scope:
• Alignment revision at East Gobbi Street ($4,000)
• !Nitrogen Balance Study ($15,000)
• RWQCB/DDW Draft Engineering Report and Notice Of Intent (NOI) ($10,000)
• Inundation Plan for DSOD Permit Application ($18,000)
• Additional Carollo abor required to manage and provide engineering input to assist LACO
Associates with the recycled water storage pond design. ($54,000)
This included:
G Developing solutions to address potential water quality issues caused by long detention
times going from the 3MG pond required for the Phase 1 & 2 pond to the 66 MG pond
required for the Phase 1-3 pond.
u Unanticipated design effort associated with recirculation pipeline configuration requ red for
the three cell structure.
n Extensive QA/QC of the LACO design to meet siting and water quality standards.
o Design of inlet/outlet details and pond overflow (not in Carollo's scope)
• A higher than expected number of questions to respond to during bidding ($5,000)
To keep budgets for SRF and non -SRF funded components separate and to facilitate tracking of expenses
for SRF purposes, we have divided the overal, budget into the following categoriesibudgets:
• Phase 1-3 Recycled Water Distribut;on System Design and ESDC ($2,130,422)
• Chlorine Contact Basin Design ($254,965)
• Construction Management ($1,442,391)
We are requesting that the addit onal $106,000 be added to the Phase 1-3 Recycled Water Distribution
System Design and ESDC budget for a new budget of $2,236,422 and a total overall budget of $3,933,778.
Project No I Eriksen-2018 0126 WAT E R
OUR FOCUS
OUR BUSINESS
OUR PASSION
Mr. Tim Eriksen
City Engineer/Director of Public Works
City of Ukiah
January 26, 2018
Page 2
If you would like discuss these items further, please contact either me or Tracy Clinton at 925-932-1710.
Sincerely,
CAROL O ENGINEERS, INC
� '�z
Trac CII t
y non
Associate Vice President
TAC J I
CC, Jarod Thiele, City of Ukiah
Tracy Clinton, Carollo Engineers
carollo.com
49,CW�Nff.
Engineers...Workinp Wanders Wdh Water*
March 9, 2018
Mr. Tim Eriksen
City Engineer/Director of Public Works
City of Ukiah
300 Seminary Ave.
Ukiah, CA 95462
Subject: Recycled Water System Additions/Revisions — Ch orine Contact Basins
Carollo Contract #: 8660E.10
Dear Mr. Eriksen:
The purpose of this letter is to inform you of requested project revisions and request the additional budget
to complete and implementthose. The chlorine contact basins (CCB) design is being revised currently with
the City's approval based on emails and conversations. Due to time constraints with the project starting and
the contractor beginning work, Carollo has already started these revisions at the request of Sean White. The
revisions and L056 ar a explained Fut Li ier ueivvv.
The main Chlorine Contact Basins revisions are outlined below. Costs for each are also identified by item.
Subconsultant Fees
o The subconsultant fees for the Topographical Survey and Mapping and the Geotechnical
and Corrosion Investigation were greater than budgeted for in the original design contract.
o SUMMARY -Added topographical survey fees, $5,257. Added geotechnical investigation
fees, $4,175. Total additional sub fees = $9,432, including Carollo's sub mark-up.
Walkway
o Dur ng a site visit on 1/25/2018 Alan Hodges expressed need for an elevated walkway across
the basins at mid length. The elevated wa' kway would allow the operations staff ample
access to spray down the interior wall faces with utility hoses for cleaning and removal of
algae.
o During the project status phone conversation Sean White approved the addition of the
elevated walkway.
o SUMMARY - Added civil/mechanical/structural design effort for the elevated walkway,
$9,614.
Rerouting Existing Electrical
o The original scope of the CCB did not include any electrical, instrumentation or controls as
all chemical injection, analyzers and level sensors are outside of the CCB.
o After starting design it became apparent that there was a significant amount of existing
electrical and control runs that need to be temporarily removed and replace or rerouted
permanently in order to perform the mass excavation required for the construction of the
CCBs.
o It was agreed to by Sean White during a project status meeting on 1/23/2018 that some
electrical work is needed and that a second site visit would be made to identify the electrical
handholes, conduits, and conductors that need to be removed and replaced or rerouted.
o SUMMARY - Added electrical design effort for the rerouting of site electrical, $21,490.
Project No I Eriksen 20180309 WAT E R
OUR FOCUS
OUR BUSINESS
OUR PASSION
Mr. Tim Enksen
City Engineer/Director of Public Works
City of Ukiah
March 9, 2018
Page 2
• Drain Line
o During a 'site visit on 8129/2017 Alan Hodges mentioned that the existing basins were slow
to drain through the 4" drain line and did not completely empty the basins. It was agreed
that a new larger drain line would be constructed to the west and tied into MH -21 which is
located in the road in front of the sludge dewatering facility. This new drain line would also
carry stormwater from the CCB site.
o After the initial topographic survey, it was determined that the invert at MH -21 was not
deep enough to drain the CCBs_ A new route needed to be established. We then decided to
use the existing 4" drain route and upsize the drain line. During a second site visit on
112512018, we were unable to determine where the existing 4" drain terminated. A City
maintenance crew attempted to trace the line, but was unable to probe the line due to a
broken buried valve or other obstruction.
o We then proposed a new drain route from the CCBs west to a new manhole and north to
existing MH EXB2 located in between the AWT and Primary Clarifiers. The City surveyors
located the route and established the invert elevations of MH-EXB2. The results were that
the MH ;nvert elevations provided a minimal slope from the CCB to MH-EXB2 however, the
new drain line would enter below the surcharge manhole water surface elevation. The
potential could exist for raw sewage from the surcharged manhole to backup, through the
drain line, and contaminate the CCB. This was not acceptable.
During the project status meeting on 2/13/2018 with Sean White and Jared Thiele, it was
decided to separate the CCB drain line from the gravity storm drain/sewer systems. 'It was
agreed that the CCB under drain lines will flow into a new wet well, constructed next to the
basins. A temporary or permanent pump could be used to drain the wet well into the nearby
storm drain manhole with an air gap.
o The storm drain line will follow the proposed alignment to existing MH-EXB2 and will be
used to drain the CCB area.
a SUMMARY - Added civillmechanical design effort for relocating drain line and wet well,
$7,939.
Drain Pump Station
a Two type of pump stations were discussed for the CCB drain - temporary and permanent —
as noted above. On 2/1412018 Alan Hodges and Sean Whi; a approved the design of a
permanent pump station in the CCB wet well.
o SUMMARY - Added mechanical and electrica: design effort for the CCB Drain Pump
Station, $39,136.
Design costs shown above total to $87,609(due to rounding, it appears to be $2 less than the above adds
to). The construction budget impacts are estimated at approximately $149,404.
We are requesting that the additional design cost be added to the above referenced contract. The additional
amount of $97,296 would be added to the existing Chlorine Contact Basin design contract for a new total of
$383,929.
carollo.com
Mr. Tim Eriksen
City Engineer/Director of Public Works
City of Ukiah
March 9, 2016
Page 3
If you would like discuss these items further, please contact meat 925-932-1710 or Minton@caroilo.corrf or
Mike Ducker at MDucker@carollo.com.
Sincerely,
CAROLLO ENGINEERS, INC.
Ft%7e .rF G
Tracy Clinton
Associate Vice President
TAC JI
cc- Jarod Thiele, City of Ukiah
Sean White, City of Ukiah
Mike Ducker, Carollo Engineers
carollo.com
cpprom1f
Engineers... Working Wonders Mth Waier•
March 12, 2018
Mr. Tim Eriksen
City Engineer/Director of Public Works
City of Ukiah
300 Seminary Ave.
Qkiah, CA 95482
Subject: Recycled Water System Additions/Revisions- Engineering Services during Construction (ESRC)
RW Project Design Changes
Carollo Contract #: 8660A.20
Dear Mr. Eriksen:
The purpose of this letter is to inform you of project revisions and request the additional budget to complete
and implementthose. The below noted design changes are being revised currently with the City's approval
based on emails and conversations. Due to time constraints with the project starting and the contractor
beginning work, Carollo has already started these revisions at the request of Sean White. The revisions and
costs are explained further below.
The main ESDC revisions are outlined below. Costs for each are also identified by item.
• Orr's Creek Realignment and Vaults
.J Develop vault drawings - plans and deta',ls
o Costs for George Rau (surveying) are covered by the original contract amount.
o Realignment costs are not requested to be recovered due to design error ($6,872)
o SUMMARY -29 hours at $5,665
• Oak Manor Rd & Gobbi St
o Review City box culvert construction drawings
o Develop realignment drawings - plans and details
Conduct site investigations
o Culvert investigation and alternatives development
o SUMMARY - 227 hours at $45,904
• Babcock Lane Meter Connections
o Realignment costs are not requested to be recovered due to design error ($10,150)
o SUMMARY -$0
• Demand Increase
o Develop drawings - plans and deta;'s
o Pump Investigation and alternatives analysis
o Redolupdate hydraulic calculations
o Specification review, updates, and cable schedule
o Recycled water System Operations Draft memo for farmers
o NHC subconsultant - reanalyze surge tanks and provide memo for sizing adequacy
o SUMMARY- NHC subconsultant ($22,616) plus 219 hours Carollo - total $68,700
• PRV Install
o Develop drawings plans and details
o SUMMARY -30 hours at $5,953.
:Project No I Erikseo .2018 0312 WAT E R
OUR FOCUS
_ OUR BUSINESS
OUR PASSION
Mr. Tim Eriksen
City Engineer/Di rector of Public Works
City of Ukiah
March 12, 2418
Page 2
Norgard Properties Realignment
o Develop drawings— plans and details
o Conduct site investigations
.a Costs for George Rau (surveying) are covered by the original contract amount.
o SUMMARY— 82 hours at $16,535
Design costs shown above total to $142,758, which includes NHC subconsultant for $22,616. We are
requesting that the additional design cost be added to the above referenced contract.
If you would like discuss these items further, please contar.t me at 925.932-1714 or rtCliyWdO€ate M or
Mike Lonergan at MLonergan@carollo.com.
Sincerely,
CAROLLO ENGINEERS, INC.
(j � L
Tray Clinton
Associate Vice President
TAC•jl
cc Jarod Thiele, City of Ukiah
Sean White, City of Ukiah
Mike Lonergan, Carollo Engineers
carollo com