GM-20-04-03-0891
Supplemental Contract Rev. 03/2011
0140.4634-40; 00443196 215829
SUPPLEMENTAL CONTRACT NO. 12
TO CONTRACT FOR ENGINEERING SERVICES
FIRM: WALKER PARTNERS (“Engineer”)
ADDRESS: 804 Las Cimas Parkway, Suite 150, Austin, TX 78746
PROJECT: Phase 1C Water Treatment Plant Expansion and Phase 2 Land Rights
and Stakeholder Coordination
This Supplemental Contract No. 12 to Contract for Engineering Services is made by and between
the BRUSHY CREEK REGIONAL UTILITY AUTHORITY, INC., hereinafter called
“BCRUA” and Walker Partners, hereinafter called the “Engineer”.
WHEREAS, BCRUA and Engineer executed a Contract for Engineering Services, hereinafter
called the “Contract”, on the 19th day of April, 2017 for the BCRUA Phase 1C Water Treatment
Plant Expansion in the lump sum amount of $1,763,900.00 and Phase 2 Land Rights and
Stakeholder Coordination Project in the maximum amount of $2,012,600.00 for a total Project
compensation of $3,776,500.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 1 on July 19, 2017 to
amend the scope of services and to increase the compensation by $14,100.00 for Phase 1C Water
Treatment Plant Expansion to a lump sum amount total of $1,778,000.00 and by $212,000.00 for
Phase 2 Land Rights and Stakeholder Coordination Project to a maximum amount total of
$2,224,600.00 for a total Project compensation of $4,002,600.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 2 on November 20,
2017 to amend the scope of services and to increase the compensation by $19,600.00 for Phase
1C Water Treatment Plant Expansion to a lump sum amount total of $1,797,600.00 for a total
Project compensation of $4,022,200.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 3 on April 18, 2018 to
amend the scope of services and to increase the compensation by $105,200.00 for Phase 2 Land
Rights and Stakeholder Coordination Project to a maximum amount total of $2,329,800.00 for a
total Project compensation of $4,127,400.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 4 on October 24, 2018
to add the construction phase services for the Phase 1C Construction Phase Services Project and
to increase the compensation by $897,200.00 for a total Project compensation of $5,024,600.00;
and
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WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 5 on April 30, 2019 to
modify the provisions for the scope of services and to increase the compensation by $40,300.00
for Phase 1C Water Treatment Plant Expansion to a lump sum amount total of $2,735,100.00 for
a total Project compensation of $5,064,900.00; and
WHEREAS, BCRUA and Engineer executed amended Supplemental Contract No. 6 on
September 25, 2019 to modify the provisions for the scope of services and to increase the
compensation by $497,885.00 for Phase 2 Land Rights and Stakeholder Coordination Project to
a maximum amount total of $2,827,685.00 for a total Project compensation of $5,562,785.00;
and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 7 on November 15,
2019 to modify the provisions for the scope of services and to increase the compensation by
$49,400.00 for Phase 2 Land Rights and Stakeholder Coordination Project to a maximum
amount total of $2,877.085.00 for a total Project compensation of $5,612,185.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 8 on November 20,
2019 to modify the provisions for the scope of services and to increase the compensation by
$447,880.00 for Phase 2 Land Rights and Stakeholder Coordination Project to a maximum
amount total of $3,324,965.00 for a total Project compensation of $6,060,065.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 9 on January 22, 2020
to modify the provisions for the scope of services and to increase the compensation by
$498,590.00 for Phase 2 Land Rights and Stakeholder Coordination Project to a maximum
amount total of $3,823,555.00 for a total Project compensation of $6,558,655.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 10 on April 3, 2020 to
modify the provisions for the scope of services and to increase the compensation by $38,608.00
for Phase 1C Water Treatment Plant Expansion to a lump sum amount total of $2,773,708.00 for
a total Project compensation of $6,597,263.00; and
WHEREAS, BCRUA and Engineer executed Supplemental Contract No. 11 on April 3, 2020 to
modify the provisions for the scope of services and to increase the compensation by $40,815.00
for Phase 1C Water Treatment Plant Expansion to a lump sum amount total of $2,814,523.00 for
a total Project compensation of $6,638,078.00; 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 $26,400.00 for Phase 1C Water Treatment
Plant Expansion to a lump sum amount total of $2,840,923.00 for a total Project compensation of
$6,664,478.00;
NOW THEREFORE, premises considered, BCRUA and the Engineer agree that said Contract
is amended as follows:
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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
$26,400.00 the lump sum amount payable under the Contract for Phase 1C Water Treatment
Plant Expansion Project to a total of $2,840,923.00 for a total Project compensation of
$6,664,478.00, as shown by the attached Addendum to Exhibit D.
IN WITNESS WHEREOF, BCRUA and the Engineer have executed this Supplemental
Contract in duplicate.
[signature pages follow]
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WALKER PARTNERS
By:
Date
George E. Walker, Jr., President
April 3, 2020
4/03/2020
4/2/2020
ADDENDUM TO EXHIBIT B
ENGINEERING SERVICES
GENERAL
The purpose of Supplemental Amendment No. 12 is to address additional services requested by the
OWNER for the Phase 1C WTP Expansion project. The additional services include design and
construction administration required to change order the proposed improvements into the Phase 1C
WTP Expansion construction contract as described in the Basic Scope of Services.
BASIC SCOPE OF SERVICES
Task 1.0 ‐ Phase 1C WTP Expansion
Insert Task 1.8 as follows:
1.8 Phase 1C Additional Services
1.8.1 Chemical Pipe Bank Improvements
1.8.1.1 Develop design drawings required for construction of a new, buried
chemical pipe bank from the WTP Disinfection Facility to Chemical
Injection Vault (CIV) – 4. The proposed pipe bank will replace existing
chemical feed lines that are known to have failed between the
Disinfection Facility and CIV – 4.
1.8.1.2 Provide construction phase services required to complete the proposed
improvements as a change order to the WTP construction contract.
1.8.2 Trails End Road Combination Air Valve (CAV) Replacement.
1.8.2.1 Specify vacuum breaker/air release valves to replace two existing 24‐
inch CAVs as described in the Phase 2 Raw Water Pump Station
Hydraulic Transient Analysis (Strategy 1) by Northwest Hydraulic
Consultants.
1.8.2.2 Provide construction phase services required to complete the proposed
improvements as a change order to the WTP construction contract.
4/2/2020
ADDENDUM TO EXHIBIT C
WORK SCHEDULE
The engineering services will be provided during the Construction Phase Work Schedule described
in Supplemental Amendment No 4.
ADDENDUM TO EXHIBIT D
Fee Schedule
Attached Behind This Page
4/2/2020
ADDENDUM TO EXHIBIT D
COMPENSATION
Total compensation for services under Supplemental Amendment No. 12 is estimated to be $26,400.
Total compensation for Task 1.0 – Phase 1C WTP Expansion shall be adjusted to be $2,840,923. Total
compensation for the Project shall be adjusted to $6,664,478.
OWNER shall pay ENGINEER for Task 1.8 set forth in Supplemental Amendment No. 12 on the basis of
Standard Hourly Rates as described in Paragraph 1.0 of Exhibit D of Supplemental Amendment No. 4.