HomeMy WebLinkAboutContract 45644-A1 CITY SECRETARYL, 4�
CONTRACT NO.
AMENDMENT NO.1
STATE OF TEXAS S CITY SECRETARY CONTRACT NO. 45644
(No M&C Required)
COUNTY OF TARRANT S
WHEREAS, the City of Fort Worth (City) and Deltatek
Engineering, (Engineer) made and entered into City Secretary
Contract No. 45644, (the Contract) which was authorized by the City
of Fort Worth on the 30th day of May 2014 ; and
WHEREAS, the Contract involves engineering services for the
following project:
Additional Design Services for Lime and Polymer Systems: .
WHEREAS, it has become necessary to execute Amendment No. 1 to
said Contract to include an increased scope of work and revised
maximum fee;
NOW THEREFORE, City and Engineer, acting herein by and through
their duly authorized representatives, enter into the following
agreement which amends the Contract:
1.
Article I of the Contract is amended to include the additional
engineering services specified in a proposal letter dated July 31,
2014, a copy of which is attached hereto and incorporated herein.
The cost to City for the additional design services to be performed
by Engineer total $46,725.00.
2.
Article II of the Contract is amended to provide for an
increase in the maximum fee to be paid to Engineer for all work and
services performed under the Contract, as amended, so that the
total fee paid by the City for all work and services shall not
exceed the sum of $96,475. 00.
m
n
m
m
0
m
CV ��cCRET TX
r►
3.
All other provisions of the Contract which are not expressly amended
herein shall remain in full force and effect.
EXECUTED on this the da o 2014, in Fort Worth,
Tarrant County, Texas. <,®R7'
000000pa�
AT7�W CL;
0
°o
0
City Secretary °000000 000
TEXP►
APPROVAL RECOMMENDED: APPROVED:
Andrew T. Cronberg, P.E. .J Fernando Costa
Acting Director, Water Department Assistant City manager
Deltatek Engineering
Engineer
By:
Bahram Niknam, P.E
APPROVED AS TO FORM AND LEGALITY:
Ago M*C AiGC
P-SWX
Assistant City Attorney
OFFICIAL RECORD
CITY SECRETARY
F',WORTH,TX
-2-
1�
July 31, 2014
Mr. Andrew T. Cronberg, P.E.
Assistant Director
Water Department
Engineering and Fiscal Services
City of Fort Worth
1000 Throckmorton Street
Fort Worth,Texas 76102
Reference: Biosolids Facilities Expansion Belt Press No. 6
Village Creek Wastewater Treatment Plant
Proposal to Revise Scope of Design Services
Dear Mr. Cronberg:
In response to your request, and project meeting held July 28, 2014, Deltatek Engineering is
pleased to provide you with this proposal to revise the Scope of Services on our existing
Engineering Services Contract. City of Fort Worth desires to replace the lime"pug mill", install a
new polymer system to feed Belt Presses 5 & 6, replace all grinder pumps, and meter all six (6)
polymer pumps.
Deltatek will amend the plans for installation of Belt Press No. 6 to include these items. I would
note that our original proposal only provided design for installation of new belt press and
auxiliary items (pumps, piping, etc.) associated with that press. Addition of these items increases
the scope of that original proposal.
See attached Exhibit A for revised scope of service, schedule, and design fees.
Should you have any questions, please call me at 972-255-9500, or 214-232-5040.
Sincerely,
DELTATEK ENGINEERING
OA44V W11400
Bahram Niknam, P.E.
Attachment: Exhibit A
2211 Texas Drive,Irving,Texas 75062
Firm Registration No.F-4419
972-255-9500 Fax 972-255-7500
Email:bn a.deltatekeng corn
ATTACHMENT "A"
General Scope of Services
Biosolids Expansion Belt Press No. 6
At Village Creek WWTP Dewatering Facility
Revised Scope of Design Services
July 31, 2014
Part 1.0 Evaluation and Design
1.01 Deltatek Engineering has submitted preliminary design plans for installation of a
6`" belt press at the Dewatering Facility. We have reviewed comments by City
staff, and Renda Environmental indicating the need to upgrade/replace components
of the polyrner and lime systems in order to improve the operation of the facility.
Deltatek Engineering has been requested to revise the plans to include
replacement of the lime system "pug mill", install a new separate polymer feed
system supply to feed Belt Presses 5 & 6, add metering pumps to all six (6) of the
polymer pumps, and replace all three (3) sludge grinders. I would point out that
Deltatek has already made provisions to replace the grinder pump for press 5,
sludge pump and polymer pump serving Belt Press 5, add a new platform access
stairway, and upgrade the motor/gearing of the conveyor belt at no additional
charge for those design modifications. The scope of work for this revision shall
include but is not limited to the following:
A Lime System:
I. Upsize the existing 5'-0" diameter bin activator with a 6'-0" diameter bin
activator.
2. Replace existing twin 18" sludge lime mixers with twin 24" SS Sludge
Lime Mixers including two (2) 10 hp motors with Variable Frequency
Drive (VFD).
3. Utilize existing conveyor belt scale to optimize feed rate.
4. Site civil work required to mount the new equipment.
5. System requires 480VAC, 3p, 60Hz electrical power. Availability of
power to be determined by others.
B Polymer System:
I. Piping modifications to serve polymer pumps for Belt Presses I — 4 only
from existing polymer feed system.
2. Install new polymer feed system and piping to feed polymer pumps for
Belt Presses 5 & 6.
3. Add flow metering capability to all six (6) polymer pumps.
4. System requires 480VAC, 3p, 60Hz electrical power. Availability of
power to be determined by others.
Page 1 of 2
C. Polymer Pump Metering:
1. Add flow meter on six(6)polymer pump discharge lines.
D. Replace Grinder Pumps:
1. Remove two (2) existing grinders. Grinder for Belt Presses 5 & 6 included
in original design.
2. Replace grinders for Belt Presses 1&2 — 3&4 with two (2) new "Moyno"
Grinders Model P415GI50 15 hp TEFC Gear Motor units. Include all
valves and hardware.
3. Replace all existing 6" piping on grinder pump with 8" piping.
Part 2.0 Revised Schedule
Task Schedule
Preliminary Plans 1 weeks
Final Plans and Specifications 2 weeks
Review 2 weeks
Equipment Ac uisition 12 weeks
Construction Complete 6 weeks
Total Time 23 Weeks
Part 3.0 Construction OPC
Task Unit Cost
Furnish & Install Lime System Upgrade $527,450.00
Furnish & Install New Polymer System $249,800.00
Furnish & Install Polymer Metering System $19,750.00
Furnish & Install two 2) new"Mo no" Grinders $59,375.00
Total OPC $856,375.00
Part4.0 Design Cost Proposal
Evaluation and Design Phase
Task Unit Cost
Preliminary plans andspecifications $34,275.00
Final plans andspecifications $12,450.00
Total Compensation $46,725.00
Page 2 of 2