CM-2024-299 - 11/15/2024STATE OF TEXAS §
COUNTY OF WILLIAMSON §
SUPPLEMENTAL CONTRACT NO. 1
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: K FRIESE & ASSOCIATES, LLC _ ("Engineer")
ADDRESS: 1120 S. Capital of Texas Highway, CityView 2, Suite 100, Austin, TX 78746
PROJECT: BCRWWS Wastewater Master Plan
This Supplemental Contract No. 1 to Contract for Engineering Services is made by and between
the City of Round Rock, Texas, hereinafter called the "City" and K Friese & Associates, LLC,
hereinafter called the "Engineer."
WHEREAS, the City and Engineer executed a Contract for Engineering Services, hereinafter
called the "Contract," on the 1 lth day of August, 2022 for the BCRWWS Wastewater Master Plan
Project in the amount of $497,989.37; and
WHEREAS, it has become necessary to amend the Contract to modify the provisions for the scope
of services and to increase the compensation by $25,514.24 to a total of $523,503.61;
NOW THEREFORE, premises considered, the City and the Engineer agree that said Contract is
amended as follows:
I.
Article 2, Engineering Services and Exhibit B, Engineering Services shall be amended as set forth
in the attached Addendum to Exhibit B. Exhibit C. Work Schedule shall be amended as set forth
in the attached Addendum to Exhibit C.
II.
Article 4, Compensation and Exhibit D, Fee Schedule shall be amended by increasing by
$25,514.24 the maximum amount payable under the Contract for a total of $523,503.61, as shown
by the attached Addendum to Exhibit D.
IN WITNESS WHEREOF, the City and the Engineer have executed this Supplemental Contract
in duplicate.
[signature pages follow]
Z G �-Z�
Supplements Contract
0199.202232;4860-5211-8518
Rev.06. 16
84275
K FRIESE & ASSOCIATES, LLC
By: r f 40=
Thomas M. Owens, P— E ., Vice President
08 NOV 2024
Date
Supplemental Contract Rev.06!16
0199.202232:4860-5211-851$ 84275
CITY OF ROUND ROCK
By•
Printed Name:
Title: �G
Date Signed:
Supplemental Contract
0199.202232:4860-5211-8518
APPROVED AS TO FORM:
Stephanie L. Sandre, City Attorney
licv.06/16
84275
ADDENDUM TO EXHIBIT A
City Services
The City of Round Rock will furnish to the Engineer the following items/information:
• Designate a person to act as City's representative with respecttothe services to be performed
orfurnished bythe Engineer. This representation will have authority totransmit instructions,
receive information, interpret and define City's policies and decisions with respect to
engineering services.
• Provide allcriteria and full information asto City's requirements forthe project, including
objectives and constraints and furnish copies of all standards which City will require to be
included irk the project.
• Assist Engineer by placing a I I available information pertinent to the Project, including previous
reports and any other data relative to the Project at the ENGINEER's disposal.
• Review and comment on the draft Report.
ADDENDUM TO EXHIBIT B
Engineering Services
BCRWWS MASTER PLAN
AMENDMENT 1
The Brushy Creek Regional Wastewater System (BCRWWS) is a regional
wastewater system that serves and is owned by the cities of Round Rock, Cedar Park,
Leander, and Austin (Owners). The system consists of gravity sewer mains, lift
stations, force mains, and wastewater treatment facilities to treat and discharge
wastewater into Brushy Creek in southern Williamson County. The main wastewater
treatment facility in the system, the Brushy Creek Regional Wastewater Treatment
Facility — East Plant (BCE), is currently under construction for an expansion from 20
million gallons per day (MGD) to 30 MGD average daily flow. In September 2022, the
Owners retained K Friese + Associates (KFA) to provide professional engineering
services for the BCRWWS Master Plan project. The objective of the Master Plan is to
review the existing BCRWWS along with client -provided flow projections to identify
proposed system upgrades. It will help resolve existing deficiencies and serve
future population growth.
During the project there were unforeseen delays and additional effort associated with
data collection, data review, and hydraulic modeling. This amendment is related to
additional effort required to complete the project, including:
Task 1 — Project Management and Coordination
The project was initially scoped for 12 months duration. The schedule was delayed
as future flow projections were developed by the Owners and is the project is now
anticipated to be 32 months duration. Additional effort was required for coordination,
invoicing, and monthly status reports.
Task 2 — Data Collection and Review
The original scope assumed that the Owners would provide all as -built records and
future flow projections. As the Owners were developing the flow projections, KFA
coordinated with the Owners on the projections. Some sets of projections required
several iterations of review and coordination before the projections were finalized and
ready for use in the regional system project. The coordination was more than what
was anticipated in the original scope. Additionally, not all as-builts were provided with
the initial data request and there were significant differences between the GIS data and
as -built plans, requiring more coordination to obtain available as-builts for
confirming and updating the system components from the GIS data.
Task 5 — Hydraulic Capacity Analysis of Existing System, and Future
Flow Scenarios
Additional effort was required to revise the hydraulic model with the changes to the flow
projections and system geometry. KFA developed the initial model, but changes to
the flow projections and obtaining additional as -built records required the model
to be updated. KFA revised all three planning horizons in SewerGEMS, including
updating proposed system improvements required to meet the updated flow projections.
K FRIESE
+ ASSOCIATES
10131/2024 Page 1 of 2 11 LOCHNGM
ADDENDUM TO EXHIBIT B
Engineering Services
BCRWWS MASTER PLAN
AMENDMENT 1
Task 7 — Treatment & Sludge Disposal Evaluation
Several changes to the approach for the treatment & sludge disposal evaluation
portion of the project led to additional effort by the KFA team. This includes:
Changes to the influent design concentration requiring model updates
Revisions to the flow projections provided by the Owners resulting in updated
calculations, technical memorandum changes, and sludge production projections.
Additional treatment capacity evaluation for the 2070 planning horizon. The
Owner's flow projections in 2070 were increased, putting the projected daily flows
above the maximum capacities of BCE and BCW. Additional conceptual capacity
sizing and scheduling for implementation was required for a new WWTP to handle
the higher flows.
K FRIESE
+ ASSOCIATES
10/31/2024 Page 2 of 2 it LCCMNRR
6CRWWS Wastewater Master Plan r '
CIS 1 Scope Document VIRP
Change in Services 1
Additional Work Related to Changes in Flow Projection and
General Project Schedule Delays
(KFA Project No. 0882)
Original Contract Amount:
$ 204,009.37
Previous Increases/Decreases in Contact Amount:
$ 0.00
CURRENT CONTRACT AMOUNT:
$ 204,009.37
This Increase/Decrease in Contract Amount:
$10,174.24
REVISED CONTRACT AMOUNT:
$ 214,183.61
DESCRIPTION OF WORK TO BE ADDED TO OR DELETED FROM SCOPE OF SERVICES:
I. Project Management and Resource Scheduling for prolonged project duration and schedule shifts.
a. Scoped Final Master Plan Deliverable — 01/02/2024
b. Latest Final Master Plan Deliverable—11/15/2024
c. Change for 9 months PM additional services
2. Concentration Data: Previous data evaluation completed and submitted 11/27/2023 (Chapter 2) used
historical data to select "master planning" influent design concentrations. Now that the 40 MGD project is
underway, the special sampling and 40 MGD scope defined the influent TSS to be slightly lower than the
Chapter 2 recommendation (504 mg/L vs 480 mg/L).
Adjustments needed:
a. Text, Figures, Tables in Chapter 2
b. Model influent parameters and model run results in Chapter 3
3. Wastewater Flow Data: Old wastewater flow projections from City of Austin have been updated from the
confirmed values on 07/18/2023 to the values provided on 10/27/2023.Old wastewater flow projections
from City of Round Rock have been updated from the confirmed values on 07/18/2023 to the values
provided on 04/15/2024.
Adjustments needed:
a. Background calculations for flow projections, projection charts, TCEQ expansion triggers, and
future capacity sizing recommendations.
b. Re -write Chapter 2, Section 3 in its entirety
c. Text, charts, and schedule in Chapter 4
d. The previous 2070 flow projections were lower (53.9 MGD) as compared to the new 2070 flow
projections (56.1 MGD). The new 56.1 MGD projection for 2070 puts the system beyond the
previous recommendation of a 60 MGD facility for the ultimate BCE plan.. need additional scope
for new alternatives to handle higher flows.
e. Sludge production projections text, charts, tables, and general approach in Chapter 5.
. . .. _ . 1 „t .. _�
0612512024
BCRWWS Wastewater Master Plan
CIS 1 Scope Document
�t
4. New Approach to 2070 Treatment Capacity Expansion:
a. Scoped Master Plan approach to BCE Expansion to 40 MGD —This work was completed in 2023
but the design of the BCE Expansion to 40 MGD is already underway and is no longer applicable
information to include in a Master Plan.
b. New treatment capacity options:
i. BCE Expansion Using Primary Filters (Included in Scope)
ii. 8CW Expansion (Included in Scope)
iii. New treatment plant for large Austin Water flow increases between the 2040 planning
horizon and the 2070 planning Horizon (New Option called "Far West WWTP")
• The presentation of the Far West WWTP option is limited to conceptual
capacity sizing and preliminary planning schedule for implementation.
Proj
Poncipai
Senior PM Manager
Proi. Eng.
EIT
CAD
Task flame
S 314 18
$ 259.58 S 1$9.28
S 156.83
$ 127.97 S
125.00 Total labor Expenses
Total
A.1 Progress Repartmg and Imo cane
2
9
S
2,331.99
S
2.331.88
A-2 Workshops and Meetings
$
-
S
A-3 Cluali Review
2
2 1
S
1.336.80
S
;336.80
B.1 Data Collection and Review
1
4
4
S
1,328.40
029.49
C.1 Flow Projections and Loading
4
4
$
1.384.44
S
1,384 44
C.2 Process Model
4
4
$
1,W.44
S
1,384.44
C.3 Evaluation of East Plant Expansion
2
2
4
S
1.204 10
S
1,204.10
CA Evaluation of West Plant Expansion
S
S
-
C.5 Solids Mana rnentPlan
2
2
4
S
1,204.10
S
1.204-10
0.1 Final Report Documentation
CIS 1 Tout
0612512024
ADDENDUM TO EXHIBIT C
Work Schedule
Attached Behind This Page
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