2017-109 TETRA TECH
July 6, 2017
Mr.James Kinzler,CPM, EA
Director of Capital Planning, Grants and Projects
City of Clermont
685 W..Montrose St.
Clermont, FL 34711
Subject: City of Clermont
Change Order No. 1 for the
Sunburst Water Treatment Plant—Lower Floridan Aquifer Wells
Project#: 200-BPClermont
Dear Mr. Kinzler:
Attached for your.review and consideration is our change order for professional services associated with
the above referenced project. This change order is associated with additional services due to the
extended construction time and additional oversite: Further details along with a cost breakdown have
been included in the detailed scope of services attached hereto.
Tetra Tech looks forward.to serving the City of Clermont on this project. If you should have any
questions, please do not hesitate to contact me at 407-839-3955.
Very truly.yours, Approved:
Tetra Tech City of Clermont
/
Jon D. Fox,P.E. By: �. _ �.
Vice President ��//��
Date: ,/l C1 �. Com/ 7
Attachments
JDF/ab/Clermont/Sunburst WTP LFA Wells/Kinzler 070617
C: Brian Foulkes,;PE,Tetra Tech
Miguel Garcia;PG,Tetra Tech
Tetra Tech, Inc.
201 E. Pine Street,Suite 1000,Orlando,FL 32801
Tel 407.839.3955 Fax 407.839.3790 www.tetratech.com
ATTACHMENT A
CITY OF CLERMONT
EASTSIDE LOWER FLORIDAN AQUIFER EXPLORATORY/
TEST PRODUCTION WELL AND POTABLE WATER SUPPLY WELL
CHANGE ORDER NO. 1
OVERVIEW
The City is currently in the construction and testing phase of two (2) new Lower Floridan Aquifer
(LFA) production wells on the Sunburst Water Treatment Plant (WTP) to meet future demands
and to reduce reliance on existing Upper Floridan Aquifer(UFA) wells at the Sunburst WTP. The
initial construction period for the project was 270 days to Substantial Completion (SC) and 300
days to Final Completion (FC). Currently the estimated construction time is estimated to be 619
days to SC and 649days to FC. The revised completion date provided by the drilling contractor
includes an additional 349 days over the duration of the original contract. Some reasons for the
delays are described below:
• The contractor requested a multiple construction variances(materials and methods)from
St.Johns River Water Management District for installation of the 48-inch surface casing.
Due to availability of materials and issues with the vibratory construction method.
• Additional size 44-inch casing was required, due issues with the vibratory construction
method.
• Additional delays incurred during drilling of the pilot,due to slough in hole and equipment
issues (small air compressor, limited drill pipe weight, clutch repair, etc.) and geological
issues.
• Installation and grouting of the 32-inch intermediate casing took approximately 2 weeks
to complete (approximately 12 work days) and originally only included 4 days on the
project schedule.
• Completion of two (2) inflatable packer tests for collection of water quality testing took
approximately 2 weeks to complete(approximately 9 work days).
In addition to the drilling contractor experiencing delays associated a high staff turnover with the
drilling contractor: Since the original driller and crew were terminated by their employer,
additional oversight to correct various problems such as equipment issues, poor lithologic
sampling technique,data collection,and correction of inaccurate drill pipe and packer pipe tallies,
has been required.
r Additional services performed outside of the original Construction Administration scope include:
BAF/ab/LFA Well Testing/CO No 1 (]TETRA TECH
Tt#200BP Gen Clermont -1- 070617 t 1
• District funding agreement extension request and approval through Governing Board.
• FDEP funding agreement reporting.
• SJRWMD and FDEP funding reimbursement assistance.
• Additional construction administration associated with additional project construction
time(projected completion through April 27,2018 as shown on latest schedule provided
by contractor).
• Review of alternative construction methods for LFTWP-2.
• Additional oversite for LFTWP-2 to assure proper construction and testing.
This proposal is for professional engineering services associated with additional services including
construction administration, permitting/reporting and well construction observation services for
the project due to theextended construction time and additional oversite. In addition the City
requestedassistance with additional reporting and assistance with reimbursement submittals to
the District. Details of the services provided are detailed in Section II below.
II. SCOPE OF SERVICES
A. Construction Administration
1. Attend.eleven(11)additional meetings will be needed at an average duration of
one (1) hour each,followed by a site visit at an average duration of one(1) hour
each. These site visits will be conducted following each progress meeting.
2. Provide additional interpretation or clarification of the design documents when
requested, review/evaluate and prepare change orders required for clarification
or minor modification of the contract documents.
3. Reviewed additional requests for information (RFIs), provide interpretation of
construction documents,and issue written clarifications or interpretations.
4. Review approximately twelve (13) additional Contractor's application for
payment and the accompanying data and schedules, determine the amounts
owed to the Contractor,and advise the City of the recommended payments to
the Contractor.
5. Prepare approximately forty-five (48) additional weekly summary reports for
submittal to the SJRWMD and Florida Department of Environmental Protection
(FDEP)for funding of LFA well construction. Weekly reports will include summary
of all construction and testing activities during work week,and will include onsite
field geologist logs, daily photos, and preparation of pilot borehole lithologic log
in SJRWMD format.
6. After City and Tetra Tech determined that drilling contractor could not complete
the well construction and testing scope of work by the expiration date of the
BAF/ab/LFA Well Testing/CO No 1 (]TETRA TECH
Tt#200BP Gen Clermont -2- 070617 t 1
SJRWMD funding agreement, Tetra Tech composed and coordinated a request
for extension. The request for extension included providing SJRWMD staff with
information necessary to prepare a presentation for the SJRWMD Governing
Board to secure extended funding through the end of the 2017 fiscal year.
B. Permitting/Reporting
1. Scheduled, prepared for, and attended a meeting with District and drilling
contractor,to discuss the variance requests and the possible design and/or well
construction options.
2. Preparation of two(2)additional quarterly summary reports to the SJRWMD and
four (4) additional quarterly reports to the FDEP for funding reporting
compliance. The preparation of quarterly reports to SJRWMD was included in the
original scope of work for the final completion timeframe (270 days). The City
requested quarterly reporting to FDEP prior to the end of the 2016 fiscal,year.
Quarterly,reports will be prepared in SJRWMD and FDEP formats and are included
for the additional estimated 349 days to final completion.
3. Preparation of six (6) SJRWMD reimbursement packages and seven (7) FDEP
reimbursement packages on behalf of the City,these services were not included
in the initial scope of services. The City requested that Tetra Tech provide these
services in January 2017.
C. Well Construction Observation
This scopewill;provides for additional well construction observation services for a total of
55 additional days due to the additional construction time and testing of the wells listed
above. The number of hours isbased upon our well-site construction observation
experience at similar programs with one(1)geologist at the well site.
III. COMPENSATION SUMMARY
The total lump sum compensation for the Scope of Services described in Section II is summarized
below. A fee breakdown is provided in Attachment B.
A. Construction Administration $ 52,864.00
B. Permitting/Reporting $ 26,345.00
C. Well Construction Observation $ 79,278.00
D. Reimbursables $ 9,350.00
Total Lump Sum Fee $ 167,837.00
BAF/ab/LFA Well Testing/CO No 1 TETRA TECH
Tt#200BP Gen Clermont -3- 070617
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CHANGE ORDER FORM
Purchase Order Number: Bid Number:
Change Order Number: 1 Change Order Datedul 7,2017
Project Name:Sunburst WTP-LFA Wells Department:
Job Location:Sunburst WTP-Clermont. Florida
VENDOR INFORMATION:
Company Name: Tetra Tech
Address:201 E. Pine Street, Suite 1000 City, St.,Zip:Orlando. FL 32801
Contact Name: Jon D. Fox, P.E. Telephone:407-839-3955
DESCRIPTION OF CHANGE:
Alteration,deviation,addition,or deletion caused by conditions encountered during construction not covered by the specifications and
drawings of the project(attach additional pages if necessary).
This change order is associated with additional services due to the extended construction time and additional
construcion oversite. Further details along with a cost breakdown have been included in the detailed scope of
services attached hereto.
IIEMMIMI
A. ORIGINAL CONTRACT VALUE $ 233,684.00
B AMOUNT OF THIS CHANGE ORDER:Council approval required if over 15%of contract
price,not to exceed$49,999 OR if funds are not available in the approved budget for the Department $ 167,837.00
C. PERCENT OF CONTRACT VALUE THIS CHANGE ORDER(B/A) % 71.8%
D. AMOUNT OF PREVIOUS CHANGE ORDERS: $ 0.00
E. TOTAL AMOUNT OF ALL CHANGE ORDERS(B+D) $ 167,837.00
F. PERCENT OF CONTRACT OF ALL CHANGE ORDERS(E/A): 15%Maximum % 71.8%
G. NEW CONTRACT VALUE(A+E) $ 401,521.00
I•_ , i . • (. o : . . • . , II . I . a . . ,I1 . , . , c, t¢r'
APPt‘• _. /.77/12
CONTRACTOR Date PROJECT A'CHITECT/ENGINEER D e
DEPARTMENT DIRECTOR Date PURCHASING DIRECTOR/CITY MANAGER Date
Change Orders over 15%,not to exceed$49,999 of the original contract OR not budgeted, require the following signatures:
CITY OF C MONT ATTE:'T: A
�,, .4 " 72 -/7
rZe____ 6'' L
ail L.Ash, Mayor Date Tracy Ado),., City lerk Date
Rev.9-29-15