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CITY OF ALAMO HEIGHTS
PUBLIC WORKS DEPARTMENT
CITY COUNCIL AGENDA MEMORANDUM
TO: Mayor and City Council
FROM: Phil Laney, Assistant City Manager
SUBJECT: Authorizing an amendment to the contract with Vortex Services in the amount of
$57,215.00 for change orders related to the sewer rehabilitation project for Ogden
to near Olmos Basin Dam
DATE: December 12, 2022
SUMMARY
Consideration of an amendment to the contract with Vortex Services in the amount of $57,215.00
for change orders related to the sewer rehabilitation project for Ogden to near Olmos Basin Dam.
BACKGROUND INFORMATION
In the FY 2021-22 Budget, the City Council appropriated funding in the amount of $535,000 for
the purpose of rehabilitating a sewer main along Ogden, west through the Jack Judson Nature
Trails, and ending just before the San Antonio Water System (SAWS) outfall below the Olmos
Basin dam. The sewer rehabilitation would utilize a sewer pipebursting technique, where the
existing sewer pipe would be demolished underground and simultaneously replaced with new
sewer pipe.
The City’s engineering firm, Freese and Nichols, Inc. (FNI), was tasked with project design at a
cost of $39,900. Staff elected to utilize the Texas BuyBoard Cooperative (BuyBoard) in securing
competitive bids to perform the work. Freese and Nichols solicited bid requests to five BuyBoard
contractors offering sewer pipe bursting services. Two contractors responded with bids matching
bid specifications, and Council authorized a contract with Vortex Services on March 14, 2022 for
an amount of $373,215, plus a 5% contingency for a total of $391,825.
After the construction to replace the 0.4 miles of sanitary sewer was completed, post-construction
video footage and analysis identified a number of deficiencies in the rehabilitated sewer line,
namely areas where the pipe slope did not meet Texas Commission on Environmental Quality
(TCEQ) requirements and minimized the effectiveness of the sanitary sewer pipe. The proposed
change order includes point repairs in prioritized deficient areas via excavation at the surface.
Repairs will then be remedied and backfilled, returning the surface to its original condition.
The proposed change order to Vortex Services is $57,125, for an amended project amount of
$448,950. If the change order is authorized, the City Manager would authorize $10,000 to Freese
and Nichols for engineering for the change order construction, for an amended project amount of
$49,900. The total amended project cost of $498,850 remains within the original amount budgeted
for the project.
With approval of the change order, substantial completion of the improvements is anticipated by
the end of February 2023, with final completion by March 31, 2023.
POLICY ANALYSIS
After consultation with the city engineer (FNI), city attorney, city manager, and Vortex Services,
Council consideration is requested to amend the contract with Vortex to correct the deficiencies
identified in the replacement sewer main. Despite a larger size pipe, the deficiencies hinder the
pipe’s flow performance. The City’s engineer has concluded that the recommended repairs in the
proposed change order will be able to meet the TCEQ requirements, reduce the need for more
intensive and frequent maintenance of the sewer main throughout the useful life of the pipe, and
reduce the risk of odors being released in the project vicinity.
FISCAL IMPACT
The amendment to the contract with Vortex Services is in the amount of $57,125.00 for change
orders related to the sewer rehabilitation project to Ogden to near Olmos Basin Dam. If the
amendment is authorized, the City Manager will amend the contract with Freese and Nichols for
engineering services related to the change order repairs in an amount of $10,000.00. The total costs
associated with the change order and engineering support is $67,215.00. City Council appropriated
funding in the amount of $535,000.00 for a sewer main rehabilitation in the FY 2021-22 Budget.
Funding for the proposed change order and associated engineering expenses will use the project’s
unspent budgeted funds, the remainder of which will be carried forward into FY 2022-23.
The amounts for the original contract, the proposed amendment, and the total amended contract
amount for the sewer rehabilitation project are in the table below.
Vendors Original Contract
Proposed
Amendment
(Change Order)
Total Amended
Contract
Vortex Services $391,825 $57,125 $448,950
Freese & Nichols $39,900 $10,000 $49,900
Total $431,725 $67,125 $498,850
COORDINATION
The proposed change order was coordinated with Vortex Services, Freese and Nichols, the Public
Works Director, City Attorney and City Manager.
ATTACHMENTS
Attachment A – Change Order
_____________________
Phil Laney
Assistant City Manager
______________________
Buddy Kuhn
City Manager
Change Order
Change Order Page 1 of 6
Project Ogden Ln Sanitary Sewer Rehabilitation Project Number
Owner City of Alamo Heights ALH21610
Contractor Vortex Services, LLC.
Design Professional Freese and Nichols, Inc.
Change Order No. 1 Date 11/21/2022
Make the following modifications to the Contract Documents:
Item Description Change Amount
1 Point Repair to Area #1 – Sta. 23+24.58 $ 0.00
2 Point Repair to Area #2 – Sta. 19+68 to 21+00 $ 5,750.00
3 Point Repair to Area #3 – Sta. 18+78 to 19+23 $ 5,750.00
4 Point Repair to Area #4 – Sta. 17+60 to 18+06 $ 5,750.00
5 Point Repair to Area #5 – Sta. 15+86 to 17+60 $ 5,750.00
6 Point Repair to Area #6 – Sta. 13+09 to 14+90 $ 11,500.00
7 Point Repair to Area #7 – Sta. 07+54 to 08+15 $ 5,750.00
8 Point Repair to Area #8 – Sta. 03+99 to 04+72 $ 5,750.00
9 Condition Inspection to Area #9 – Sta. 01+00 to 01+45 $ 0.00
10 Final Television Inspections (w/ Inclinometer) $ 11,125.00
Net Change in Contract Price this Change Order $ 57,125.00
Net Change in Contract Times this Change Order 246 days
a. Original Contract Price $ 373,215.00
b. Previously Approved Change Order/Contract Amendment Amounts $ 0.00
c. Adjusted Contract Price ( a + b ) $ 373,215.00
d. Contract Amendment Amount $ 57,125.00
e. Revised Contract Price ( c + d ) $ 430,340.00
f. Percent Change in Contract Price to Date 15.3 %
Original Previous Current
Substantial Completion Date 6/27/2022 6/27/2022 2/28/2023
Final Completion Date 7/27/2022 7/27/2022 3/30/2023
Attachment A
Change Order
Change Order Page 2 of 6
CONTRACTOR OBLIGATIONS: Contractor will perform the scope of work attached as Exhibit “A” and incorporated
herein by reference for all purposes (hereinafter referred to for all purposes in this Change Order as “Repair”).
The corrected pipe slopes within the Repair shall meet TCEQ requirements being max slope of 4.88% and min
slope of 0.20%. Contractor will leave the surface equal to (or better) than existing, including repairs or replacing
any streets, roads, curbs, paths, utilities, or landscaping damaged in conformance with City Ordinances and
construction standards. Contractor will perform the repair in conformance with the narrative attached as Exhibit
“B” attached hereto and incorporated herein by reference for all purposes (hereinafter referred to for all purposes
in this Change Order as the “Narrative”); however, in the event of a conflict between the Narrative and Repair or
this Change Order, the requirement stated in the Repair, Change Order and Contract will prevail. The Contractor
and City agree and acknowledge that the Repair is intended to be a complete, safe and operational project, and
Contractor will provide all materials, services and equipment expressly or implicitly included in the Repair and
Narrative to complete the Work for the compensation stated in this Change Order. Contractor will maintain bonds
and insurance during Repair per the Contract. All terms and provisions of the Contract Documents remain in effect
except as specifically modified by this Change Order.
CITY OBLIGATIONS: The compensation in this Change Order is the full, complete, and final compensation for all
costs Contractor may incur because of or relating to this change whether said costs are known, unknown,
foreseen, or unforeseen at this time; and CONTRACTOR WAIVES AND RELEASES ALL CLAIMS FOR PAYMENT OR
COMPENSATION IN EXCESS OF THE BELOW AMOUNT, INCLUDING BUT NOT LIMITED TO THOSE FOR UNEXPECTED
OR DIFFERING SUBSURFACE OR SITE CONDITIONS, MATERIAL PRICE INCREASES AND/OR ESCALATIONS, TARIFFS,
MATERIAL OR EQUIPMENT ESTIMATION ERRORS OR QUANTITIES, INFLATION, OR MATERIAL OR SUPPLY CHAIN
DISRUPTIONS, UTILITY CONFLICTS, DELAY, EXTENDED OVERHEAD, RIPPLE OR IMPACT COST (OTHER THAN THOSE
DELAYS INTENTIONALLY OR RECKLESSLY CAUSED BY OWNER AFTER THE FULL EXECUTION OF THIS CHANGE
ORDER).
TIME: Time is of the essence with respect to the Change Order. The changes in Contract Times are the complete
and final adjustments for impacts to the ability of Contractor to complete the Work within the Contract Times and
are the only adjustments to which Contractor is entitled.
RELEASES: UPON FINAL COMPLETION OF REPAIR WITHIN THE TIME PROVIDED HEREIN, CITY AGREES TO RELEASE
AND WAIVE ANY LIQUIDATED DAMAGES ON THE CONTRACT AND CLAIMS (KNOWN OR UNKNOWN) IDENTIFIED
IN CITY CORRESPONDENCE DATED 8/4/2022 ATTACHED AS EXHIBIT “C” STRICTLY LIMITED TO ALLEGED IMPROPER
PIPE SLOPE. CONTRACTOR WAIVES AND RELEASES CITY FROM ANY KNOWN OR UNKNOWN CLAIMS IN ANYWAY
RELATING TO DELAYS, EXTENDED OVERHEAD, RIPPLE OR IMPACT COST, INCREASED COMPENSATION, OR
INCREASED COSTS OF CONSTRUCTION OCCURRING OR ACCRUING PRIOR TO THE DATE OF THIS CHANGE ORDER
OR ANY OTHER EFFECT ON CHANGED OR UNCHANGED WORK BECAUSE OF THIS CHANGE ORDER.
CHANGES: Any changes recommended by Engineer in scope or time of Repair will be negotiated by the parties in
good faith and incorporated into a written and fully executed Change Order or Work Change Directive; however,
in no event will Contractor be entitled to overhead or profit on any changes to the Repair; and any costs, fees, or
expenses will be passed through at Contractor’s cost without overhead or profit.
It is understood and agreed by the parties hereto that this settlement is a compromise of disputed claims and the
concessions made in connection with this settlement are not to be construed as an admission of liability on the
part of any party to this Change Order and are solely to avoid the cost and uncertainty of litigation.
Attachments:
• REQUEST FOR A CHANGE PROPOSAL No. 1 dated 10/25/2022, with attachments – EXHIBIT A
• REPAIR NARRATIVE – EXHIBIT B
• IDENTIFIED CONSTRUCTION DEFECTS LETTER DATED 8/4/2022 – EXHIBIT C
Attachment A
Change Order
Change Order Page 3 of 6
Recommended by Design Professional
Name Date
Approved by Contractor Approved by Owner
Name Date Name Date
Attachment A
Change Order
Change Order Page 4 of 6
EXHIBIT “A”
(See Attachment)
Attachment A
Request for a Change Proposal
Request for a Change Proposal Page 1 of 1
Project Ogden Ln Sanitary Sewer Rehabilitation Project Number
Owner City of Alamo Heights ALH21610
Contractor Vortex Services, LLC.
Design Professional Freese and Nichols, Inc.
Request for Change Proposal No. 1 Description 12-Inch Sanitary Sewer Corrections
Specification SAWS Standard Item No. 848
Drawing No. SS-1 Detail Description
Corrections to construction deficiencies of a 12-inch sanitary
sewer main.
Reference Document
☒ Request for a Change Proposal No. 1 ☐ Work Change Directive No.
☐ Shop Drawing Deviation Request No. ☐ Contract Document
Owner requests a Change Proposal for the following modifications to the Contract Documents:
Contractor to provide labor, material, and equipment costs for corrections to the 12” HDPE sanitary sewer main as
described in Attachment A – RFP No. 1 – 12-Inch Sanitary Sewer Corrections.
Disclaimer
Owner requests that Contractor prepare a Change Proposal for the changes in the Contract Documents described in
this Request for a Change Proposal. The compensation offered for this Change Proposal is to be the full, complete,
and final compensation for all costs Contractor may incur because of or relating to this change whether said costs
are known, unknown, foreseen, or unforeseen at this time, including without limitation, any cost for delay,
extended overhead, ripple or impact cost, or any other effect on changed or unchanged Work because of this
Change Proposal. Requested changes in Contract Times are to be the complete and final adjustments for impacts to
the ability of Contractor to complete the Work within the Contract Times and are the only adjustments to which
Contractor will be entitled. All terms and provisions of the Contract Documents remain in effect except as
specifically modified by this Change Proposal. Authorization to proceed with changes must be approved by the
Owner in accordance with the Contract Documents.
This RFP and scope of work outlined herein is intended to explore a compromise of the disputes and controversies
existing between the City and Vortex with respect to the grade deficiencies in the Work to avoid the cost and
uncertainty of litigation. By proposing or considering this RFP, neither party is conceding liability or fault to any
other party and both parties are reserving all rights under contract and law until a proposal is accepted.
Reason for the Change Proposal
Corrections required to comply with TCEQ Ch. 217 slope requirements for sanitary sewer lines.
Attachments
Attachment A – RFP No. 1 – 12-Inch Sanitary Sewer Corrections Memo
Requested by Eric Kong, P.E. Date 10/25/2022
Follow Up Action by Owner’s Project Team
Change Proposal No. 1 ☐ Accepted ☐ Not Accepted - Revise and Resubmit ☐ Cancelled
Attachment A
9601 McAllister Fwy, Suite 1008  San Antonio, Texas 78216  210-298-3800  FAX 210-298-3801 www.freese.com
MEMORANDUM
This memorandum outlines Freese and Nichols, Inc. (FNI) recommendations for corrections to the 12-
inch HDPE sanitary sewer main located in the vicinity of Ogden Ln, Alamo Heights TX. Any change to the
agreed upon proposal shall remain in full force for the entirety of the project unless an alternative is
presented in writing to the City and Engineer for review & approval prior to any further work.
Corrections Summary:
The following segments of the existing 12” HDPE sanitary sewer main are recommended for correction.
The proposed construction methods for correction shall be determined by the Contractor and must be
submitted to the Owner and Engineer for review and approval prior to construction.
Area No. Location Required Correction Associated Deficiency(s)
#1 Sta. 23+24.58
- Lower invert elevation of downstream
connection to original elevation per
Owner’s direction. Contractor will
address this correction as part of the
Contractor’s warranty as stipulated in the
Contract Documents.
Deficiency #1
#2 Sta. 19+68 to 21+00 - Correct pipe slope.
Deficiency #2
Deficiency #3
#3 Sta. 18+78 to 19+23 - Correct pipe slope. Deficiency #4
#4 Sta. 17+60 to 18+06 - Correct pipe slope.
Deficiency #5
Deficiency #6
#5 Sta. 15+86 to 17+60 - Correct pipe slope.
Deficiency #7
Deficiency #8
#6 Sta. 13+09 to 14+90
- Correct pipe slope.
- Any disturbances to existing roads will
be repaired in accordance with City of
San Antonio Miscellaneous Construction
Standards II and Owner Requirements.
Deficiency #9
Deficiency #10
Deficiency #11
#7 Sta. 07+54 to 08+15 - Correct pipe slope. Deficiency #12
#8 Sta. 03+99 to 04+72 - Correct pipe slope.
Deficiency #13
Deficiency #14
TO: Patrick Sullivan – City of Alamo Heights
Buddy Kuhn – City of Alamo Heights
Phillip Laney – City of Alamo Heights
Mark McGinnis – City of Alamo Heights
FROM: David Bennett, P.E.
Eric Kong, P.E.
SUBJECT: RFP No. 1 – 12-Inch Sanitary Sewer Corrections
DATE: October 25th
, 2022
PROJECT: Ogden Ln Sanitary Sewer Rehabilitation
Attachment A
Ogden Ln Sanitary Sewer Rehabilitation – RFP #1
October 20th
, 2022
Page 2 of 2
#9 Sta. 01+00 to 01+45
- Clean existing pipe and re-televise
existing pipe to confirm there is no
damage, including cracking. If damaged is
confirmed, Contractor shall provide a
proposed remediation method.
Deficiency #15
All corrections will be in accordance with the Contract Documents, including the following San Antonio
Water System (SAWS) and City of San Antonio (CoSA) Standard Specifications and Details:
- Item No. 100 Mobilization
- Item No. 101 Preparing Right-of-Way
- Item No. 103 Revegetation
- Item No. 550 Trench Excavation Safety Protection
- Item No. 804 Excavation, Trenching and Backfill
- Item No. 848 Sanitary Sewers
- Item No. 849 Sanitary Sewer Testing
- Item No. 865 Bypass Pumping Small Diameter Sanitary Sewer Mains
- Item No. 866 Sanitary Sewer Main Television Inspection
- Item No. 868 Sanitary Sewer System Cleaning
- CoSA Miscellaneous Construction Standards I
- CoSA Miscellaneous Construction Standards II
For corrections to pipe slopes, the corrected slopes must be uniform and comply with TCEQ Ch. 217
requirements for 12-inch pipe, which requires a minimum of 0.20% and a maximum of 4.88%.
Contractor shall meet all embedment and backfill requirements as specified in SAWS Standard
Specification Item No. 804. Contractor will also measure the corrected pipe slopes in accordance with
SAWS Standard Specification Item No. 848 and notify the Owner and Engineer of all recorded
measurements prior to backfill.
Contractor shall be responsible for restoring any above-grade disturbances in accordance with the
Contract Documents, including damages to the Judson Nature Trail. Any repairs to the Judson Nature
Trail will be in accordance with Specification 32 15 43 “Stalok® Paving Material Waterless Natural
Pavement for Pathways and Patios”.
Post-Construction Requirements:
Upon completion of all corrections, Contractor shall test and inspect the rehabilitated sanitary sewer
main in accordance with SAWS Standard Specification Item No. 849 and Item No. 866. The post-
construction televising shall include an inclination survey to verify all pipe slopes meet TCEQ Ch. 217
requirements. All other closeout procedures for the Project shall be in accordance with Specification 01
70 00 and Contract Documents.
Sincerely,
Eric Kong, P.E.
Project Engineer
Attachments:
Appendix A – Corrections Summary
Attachment A
Appendix A
Corrections Summary
Attachment A
PROP. INSERTION PIT
AREA FOR PIPEBURSTING
PROP. INSERTION PIT
AREA FOR PIPEBURSTING
2
0
'
2
0
'
20
'
20
'
1+00
2+00
4+00
6+00
8+00
10+00
12+00
2.77%
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LOC
LOC
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LOC
LOC LOC LOC LOC LOC LOC
LOC
LOC
LOC
LOC
LOC
LOC
LOC
LOC
LOC
LOC
LOC
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SS
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STA 1+00.00
EXIST. SSMH (MH-2)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 7.2'
N: 13721736.3800
E: 2135548.6370
RIM ELV.= 695.04'
FL. NW= 687.89' - 10" PVC
FL. NE= 688.08' - 10" PVC
FL. SE= 687.87' - 10" PVC
SEE NOTE 7, 10, AND 13
STA 3+43.69
EXIST. SSMH (MH-3)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 11'
N: 13721923.2000
E: 2135705.1060
RIM ELV.= 705.84'
FL. SW= 694.84' - 10" PVC
FL. NE= 703.46' - 6" CAST IRON
FL. E= 694.86' - 10" PVC
SEE NOTE 7, 10, AND 13
STA 6+94.91
EXIST. SSMH (MH-4)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 12'
N: 13721990.6700
E: 2136049.8250
RIM ELV.= 708.41'
FL. W= 697.27' - 10" PVC
FL. NE= 697.28' - 10" PVC
FL. SE= 702.55' - 8" PVC
SEE NOTE 7, 10, AND 13
STA 9+46.88
EXIST. SSMH (MH-5)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 6'
N: 13722123.7142
E: 2136263.8105
RIM ELV.= 704.60'
FL. NE= 669.42' - 8" PVC
FL. SW= 699.27' - 10" PVC
SEE NOTE 7, 10, AND 13
STA 12+27.79
EXIST. SSMH (MH-6)
TO BE REMOVED
MH DEPTH 6'
N: 13722277.7300
E: 2136498.7310
RIM ELV.= 708.97'
FL. NE= 703.71' - 8" PVC
FL. SW= 703.59' - 8" PVC
PIPE BURST APPROX. 244 LF OF
EXIST. 10" SAN. SEW
ER M
AIN
W
ITH
12" HDPE SDR-17 PIPE IN
ACCORDANCE
W
ITH SAW
S STANDARD SPECIFICATION
900
SEE NOTE 9
PIPE BURST APPROX. 351 LF OF
EXIST. 10" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
SEE NOTE 9
PIPE BURST APPROX. 252 LF OF
EXIST. 10" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
PIPE BURST APPROX. 281 LF OF
EXIST. 8" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
LIMITS OF 100-YR
FLOODPLAIN
EXIST. 10" PVC
S.S. LINE
CONTROL PT. # 900
MANHOLE LID
N: 13721736.3800
E: 2135548.6370
EXIST. 10" PVC
S.S. LINE
EXIST. 6" CAST
IRON S.S. LINE
EXIST. 8" PVC
S.S. LINE
EXIST. 8" PVC
S.S. LINE
EXIST. 8" PVC
S.S. LINE
EXIST. WATER LINE
SEE NOTE 2
EXIST. TELECOM LINE
AND OVERHEAD ELECTRIC
SEE NOTE 2
PAVEMENT REPAIR
(TO BE RESTORED
TO EXIST. CONDITIONS)
APPROX. 5 SY
SEE DTL. 6/DT-2
PROP. INSERTION PIT
AREA FOR PIPEBURSTING
PROP. INSERTION PIT
AREA FOR PIPEBURSTING
PROP. INSERTION PIT
AREA FOR PIPEBURSTING
2
0
'
2
0
'
12+00
14+00
16+00
18+00
20+00 22+00
23+25
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LOC
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LOC LOC
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SS
OHE
OHE
OHE
OHE
OHE
OHE
W
W
W
W
W
W
W
W
STA 12+27.79
EXIST. SSMH (MH-6)
TO BE REMOVED
MH DEPTH 6'
N: 13722277.7300
E: 2136498.7310
RIM ELV.= 708.97'
FL. NE= 703.71' - 8" PVC
FL. SW= 703.59' - 8" PVC
STA 21+00.45
EXIST. SSMH (MH-8)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 7'
N: 13722497.9800
E: 2137306.7230
FL. W= 716.60' - 8" PVC
FL. NE= 716.77' - 8" PVC
FL. SW= 719.50' - 4" PVC
FL. SW= 717.80' - 6" CLAY
SEE NOTE 7 AND 11
STA 23+24.58
EXIST. SSMH (MH-9)
CP-1
N: 13722664.6000
E: 2137456.6300
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
RIM ELV.= 732.76'
NW= 724.50' - 8"
NE= 722.67' - 8" PVC
SW= 722.53' - 8" PVC
MH DEPTH 11'
SEE NOTE 7
STA 17+60.67
EXIST. SSMH (MH-7)
TO BE REHABILITATED IN
ACCORDANCE WITH SAWS
STANDARD SPECIFICATION 910
MH DEPTH 12'
N: 13722529.4600
E: 2136968.4060
RIM ELV.= 723.39'
FL. E= 711.58' - 8" PVC
FL. SW= 711.54' - 8" PVC
PIPE BURST APPROX. 533 LF OF
EXIST. 8" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
SEE NOTE 9
PIPE BURST APPROX. 340 LF OF
EXIST. 8" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
PIPE BURST APPROX. 224 LF OF
EXIST. 8" SAN. SEWER MAIN WITH
12" HDPE SDR-17 PIPE IN ACCORDANCE
WITH SAWS STANDARD SPECIFICATION 900
SPECIFICATION 900
EXIST. 4" PVC
S.S. LINE
EXIST. 6" PVC
S.S. LINE
LIMITS OF 100-YR
FLOODPLAIN
EXIST. WATER AND
COMMUNICATION UTILITIES
IDENTIFIED IN THIS AREA
SEE NOTE 2
SERVICE LATERAL
SEE NOTE 3
SERVICE LATERAL
SEE NOTE 3
SERVICE LATERAL
SEE NOTE 3 AND 4
STA 13+09.77
INSTALL:
(1) 4' DIA. PRECAST MH PER SAWS
STANDARD SPECIFICATION
852 AND DTL. 4/DT-1
(1) VENT PER DTL. 4/DT-2. SEE NOTE 7
CONNECT TO PROP. 12" HDPE (N.S.P.I.)
N: 13722316.4589
E: 2136570.9909
SHEET
SEQ.
this
sheet,
adjust
scale.
drawing.
If
not
one
inch
on
Bar
is
one
inch
on
original
ISSUE
NO.
VERIFY
SCALE
0
1
DATE
BY
F&N
JOB
NO.
FILE
NAME
ALH21610
1/19/22
CHECKED
REVISED
DRAWN
DESIGNED
DATE
CITY
OF
ALAMO
HEIGHTS
OGDEN
LANE
SANITARY
SEWER
REHABILITATION
Plot Date: 1/19/2022 10:38 AM Plot By: 03576 Filename: N:WTUDrawingsUT-ALH-SS-OVER01.dwg
UT-ALH-SS-OVER01.dwg
Last
Saved:
1/19/2022
10:34
AM
Saved
By:
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Filename:
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ACAD
Rel:
24.1s
(LMS
Tech)
Freese
and
Nichols,
Inc.
Texas
Registered
Engineering
Firm
F-2144
9601
McAllister
Freeway,
Suite
1008
San
Antonio,
Texas
78216
Phone
-
(210)
298-3800
Web
-
www.freese.com
CIVIL
PIPE
BURSTING
PLAN
SS-1
EHK
EWL
DTB
NORTH
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2
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CAUTION!!
UNDERGROUND GAS, WATER, ELECTRIC, TELEPHONE, CABLE
TV, AND OTHER UTILITIES MAY EXIST WITHIN THE WORK AREA.
THE UTILITIES SHOWN ON THESE PLANS ARE APPROXIMATE
AND FOR INFORMATION ONLY. ADDITIONAL UTILITIES MAY
EXIST WITHIN THE WORK AREA AND MAY NOT BE INDICATED
ON THE PLANS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR
DAMAGES TO ALL UTILITIES CAUSED BY THE CONTRACTOR'S
OPERATION.
G
R
E
E
L
Y
S
T
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S
T
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M
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S
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S
T
.
OGDEN LN.
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID:
2743259
SCOTT JOHN R & BETHANNE
OWNER ID:
125256 SCOTT
BOECKMANN MICHAEL & KRISTI
OWNER ID:
125257
YOUNG PAMELA S &
ROBERT B
OWNER ID:
3270956
SILVERMAN
ALAN K
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID:
125243
CALVERT RICHARD W &
MARGARET DOANE CALVERT
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID: 70010
CITY OF SAN ANTONIO
OWNER ID: 70010
CITY OF SAN ANTONIO
PROP. LIMITS OF CONSTRUCTION
NOTES:
1. BYPASS PUMPING PLAN SHALL BE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 865.
2. CONTRACTOR MUST NOTIFY THE CITY OF ANY ROAD CLOSURES A MINIMUM OF 48 HOURS IN ADVANCE AND CLOSURE OF OGDEN LANE IS LIMITED TO A MAXIMUM
OF 24 HOURS. CONTRACTOR TO FIELD VERIFY ALL EXISTING UTILITIES IN THE AREA PRIOR TO CONSTRUCTION.
3. LOCATION OF SERVICE LATERAL IS APPROXIMATE ONLY. CONTRACTOR SHALL FIELD VERIFY LOCATION PRIOR TO REPLACEMENT. ALL ACTIVE SAN. SEWER SERVICE
LATERALS SHALL BE RECONNECTED AND MODIFIED WITH A CLEANOUT IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 1109 & 854. CONTRACTOR SHALL
CONFIRM ACTIVE SERVICE LATERALS.
4. CONTRACTOR SHALL FIELD VERIFY THAT CAPPED SAN. SEWER SERVICE LATERALS ARE NO LONGER IN SERVICE.
5. CONTRACTOR IS RESPONSIBLE FOR REPLACEMENT OF ALL SIDEWALK, CURB, LANDSCAPING, ETC. DISTURBED DURING INSTALLATION OF SAN. SEWER MATERIAL FOR
EXISTING JUDSON NATURE TRAIL IS STALOK PRODUCED BY STABILIZER SOLUTIONS AND MUST BE REPLACED IF DAMAGED DURING CONSTRUCTION PER
SPECIFICATIONS. REPLACEMENT OF TRAIL MATERIAL, SIDEWALK, CURB, LANDSCAPING, AND ALL OTHER EXISTING ABOVE GRADE CONDITIONS SHALL BE NSPI.
6. IN LOCATIONS WHERE SANITARY SERVICE LATERAL REPLACEMENTS CROSS EXISTING CURB, CONTRACTOR SHALL RESTORE CURB TO MATCH. EXISTING. NO SEPARATE
PAY ITEM.
7. MANHOLE LIDS SHALL BE GASKETED AND BOLTED DOWN TO PREVENT INFLOW AND OFF GASSING AS NOTED ON THIS SHEET, REPLACE MANHOLE COVER PER DETAIL
3/DT-2.
8. CONTRACTOR TO MAXIMIZE PIPE LENGTHS BETWEEN JOINTS WHEN POSSIBLE AND ALL JOINTS SHALL BE FUSED PER SAWS STANDARD SPECIFICATION 900.
9. CONTRACTOR TO PROTECT ALL EXISTING ABOVE-GRADE STRUCTURES AND VEGETATION IN THIS AREA. ANY DAMAGE TO PROPERTY DURING CONSTRUCTION
IDENTIFIED BY THE OWNER SHALL BE REPLACED OR REPAIRED BY THE CONTRACTOR AT NO ADDITIONAL COST TO OWNER.
10. PROJECT AREA WITHIN JUDSON NATURE TRAILS AREA IS PRONE TO FLOODING DURING STORM EVENTS. CONTRACTOR TO REMOVE ALL EQUIPMENT AND COVER ALL
OPENINGS WITHIN THIS AREA A MINIMUM OF 24 HOURS BEFORE AN ANTICIPATED STORM EVENT.
11. EXISTING RIPRAP IN CREEK BED SHALL BE REPLACED IF DAMAGED DURING CONSTRUCTION.
12. CONTRACTOR TO REQUEST APPROVAL OF ANY TREE REMOVAL PRIOR TO CONSTRUCTION AND MUST ABIDE BY ALL TREE PROTECTION REQUIREMENTS AS DICTATED
BY OWNER AND SHT. DT-7.
13. CONTRACTOR TO PROVIDE VIDEO RECORD OF ABOVE-GRADE PROJECT AREA FROM STA. 1+00.00 TO STA. 12+27.79 PRIOR TO CONSTRUCTION IN ACCORDANCE WITH
SPECIFICATION 01 33 06. VIDEO RECORD DATA TO BE PROVIDED TO ENGINEER & CITY PRIOR TO CONSTRUCTION IN THIS AREA.
EXIST. SS LINE TO BE PIPE BURST
SEE NOTE 12
SEE NOTE 12
SEE NOTE 12
EXIST. UNDERGROUND TELEPHONE
EXIST. SS LINE
EXIST. WATER LINE
EXISTING SERVICE (RECONNECT)
EXIST. GAS LINE
EXIST. OVERHEAD ELECTRICAL
EXIST. MANHOLES
EXIST. FLOOD PLAIN
1/19/2022
Area #2
Sta. 19+68 to 21+00.45
Area #3
Sta. 18+78 to 19+23
Area #4
Sta. 17+60.67 to 18+06
Area #9
Sta. 1+00 to 1+45.00
Area #8
Sta. 3+99 to 4+72
Area #7
Sta. 7+54 to 8+15
Area #6
Sta. 13+09.77 to 14+90
Area #5
Sta. 15+86 to 17+60.67
Area #1
Sta. 23+24.58
Correction
Areas
Attachment A
Inclination Survey
Upstream MH No:
11.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-9
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-8
City:
7.0 ft.
POST-12-224
Sea Level:
Street: Project name:
Total length:
221.9 ft.
6/2/2022 8:51 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
214.6 ft.
Direction:
D
CUES, Inc.
3600 Rio Vista Avenue
Orlando, FL 32805
Phone: 407-849-0190
Fax: 407-425-1569
Page 1 of 7
Inclination Survey
Deficiency #1
Area #1
Attachment A
Inclination Survey
Upstream MH No:
7.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-8
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-7
City:
12.0 ft.
POST-12-340
Sea Level:
Street: Project name:
Total length:
341.9 ft.
6/2/2022 9:15 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
336.1 ft.
Direction:
D
Page 2 of 7
Inclination Survey
Deficiency #6
Deficiency #4
Deficiency #3
Deficiency #2
Deficiency #5
132'-0" 45'-0" 45'-0"
Area #2 Area #3 Area #4
Attachment A
Inclination Survey
Upstream MH No:
12.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-7
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-6
City:
6.0 ft.
POST-12-533
Sea Level:
Street: Project name:
Total length:
443.8 ft.
6/2/2022 9:59 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
435.8 ft.
Direction:
D
Page 3 of 7
Inclination Survey
Deficiency #8
Deficiency #9
Deficiency #10
Deficiency #11
Deficiency #7
174'-0" 180'-0"
Area #5 Area #6
Attachment A
Inclination Survey
Upstream MH No:
6.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-6
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-5
City:
6.0 ft.
POST-12-281
Sea Level:
Street: Project name:
Total length:
370.8 ft.
6/2/2022 10:55 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
362.4 ft.
Direction:
D
Page 4 of 7
Inclination Survey
Attachment A
Inclination Survey
Upstream MH No:
6.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-5
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-4
City:
12.0 ft.
POST-12-252
Sea Level:
Street: Project name:
Total length:
249.4 ft.
6/2/2022 11:19 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
246.6 ft.
Direction:
D
Page 5 of 7
Inclination Survey
Deficiency #12
60'-0"
Area #7
Attachment A
Inclination Survey
Upstream MH No:
12.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-4
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-3
City:
11.0 ft.
POST-12-351
Sea Level:
Street: Project name:
Total length:
356.4 ft.
6/2/2022 12:29 PM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
347.8 ft.
Direction:
D
Page 6 of 7
Inclination Survey
Deficiency #14
Deficiency #13
72'-0"
Area #8
Attachment A
Inclination Survey
Upstream MH No:
11.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-3
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-2
City:
7.2 ft.
POST-12-244
Sea Level:
Street: Project name:
Total length:
243.7 ft.
6/2/2022 1:16 PM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
239.3 ft.
Direction:
D
Page 7 of 7
Inclination Survey
Deficiency #15
45'-0"
Area #9
Attachment A
Change Order
Change Order Page 5 of 6
EXHIBIT “B”
The overall process will include evaluating information from your RFP#1 dated 10/25/22 to clearly define the areas to
address the critical sags. Our team will use a push camera inserted into the lines to visually verify the sags identified. All
proposed areas for correction areas will be communicated to Owner and Engineer for approval prior to start of work.
Any deviations to correction areas that differ from what’s specified in RFP #1 will be pointed out for approval. We will
excavate down on those areas to expose the pipe and then use survey equipment to improve the grade at those areas.
We will keep the push camera in the line to again visually verify those sags are being addressed. It is important to
clarify, this will help improve the flow characteristics of those sections of pipe but it will not completely realign the
entire length of the pipe as only open-cutting and relaying the entire line section would achieve this. There may be
areas where we will have to cut into the pipe and insert the push camera given the limiting constraints of the cable
available for push cameras but those areas will be reconnected using a full-circle stainless repair clamp identical to how
we joined sections of pipe during the pipe bursting process at entry and exit pit locations. Any cutting into the pipe will
be communicated to the Engineer and Owner for approval prior to work commencing.
In areas where we need to lift the pipe to remove sags, we will use crushed rock to bed the pipe and ensure the
alignment will not move. In areas where the pipe needs to be lowered, we will dig out under the pipe and again bed
with crushed rock to secure the alignment. Once we have improved the grade, we will measure the exposed pipe slope
using a grading rod and a level gauge. After confirmation of appropriate pipe slope, we will then begin backfilling with
native material in lifts to ensure proper compaction. Upon completion of this, we will do another post television
inspection w/ inclinometer to verify all areas identified have been sufficiently addressed.
It will be critical to have some field time decisions including inspections, engineering, and our crew management when
we encounter obstacles above the pipe the City of Alamo Heights may not want disturbed. This includes but may not be
limited to large trees, Staloc walking path material, and impacts to roadways.
Attachment A
Change Order
Change Order Page 6 of 6
EXHIBIT “C”
(See Attachment)
Attachment A
9601 McAllister Fwy., Suite 1008 + San Antonio, Texas 78216 + 210-298-3800 + FAX 817-735-7491
August 4, 2022
Jedidiah Brewer
Senior Project Manager
Vortex Companies
18150 Imperial Valley Dr
Houston, TX 77060
Re: Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project
Dear Mr. Brewer:
This letter outlines Freese and Nichols, Inc. (FNI) construction review of the City of Alamo
Heights Ogden Lane Sanitary Sewer Rehabilitation Project (Project). The data sources used for
the review are summarized in Table 1-1.
The construction deficiencies for the rehabilitated sanitary sewer line are described in the
following sections. Photo evidence of these deficiencies are provided in Attachment A and are
sourced from Cleanview Resources LLC post-construction CCTV footage.
A post-construction inclination survey was provided by CUES, Inc. and is included as
Attachment B. The inclination survey includes notes from FNI highlighting the deficiency areas
based on post-construction CCTV footage.
Table 1-1: Construction Review Data
Source Information Date Performed Performed By (City/Contractor)
Pre-Construction CCTV 3/17/2022 IT Pipes (Contractor)
Post-Construction CCTV #1 6/2/2022 CUES, Inc. (Contractor)
Post-Construction CCTV #2 7/18/2022 Cleanview Resources LLC (City)
MH-9 to MH-8:
A list of construction deficiencies between MH-9 and MH-8 is provided in Table 1-2.
Table 1-2: MH-9 to MH-8 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
1 Raised Outlet
City has noted that the outlet of MH-9 appears
to be raised 4-inches higher than the prior
connection creating an increased WSE in the
manhole.
MH-9 Figure 1-1
2 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
20 – 40 ft Figure 1-2
3 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
160 – 480 ft Figure 1-3
www.freese.com
Attachment A
Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project
8/4/2022
Page 2 of 4
MH-8 to MH-7:
A list of construction deficiencies between MH-8 and MH-7 is provided in Table 2-1.
Table 2-1: MH-8 to MH-7 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
4 45% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
0 – 20 ft Figure 2-1
5 45% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
60 – 100 ft Figure 2-2
6 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
180 – 200 ft Figure 2-3
7 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
300 – 310 ft Figure 2-4
8 10% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
320 – 330 ft Figure 2-5
MH-7 to MH-6:
A list of construction deficiencies between MH-7 and MH-6 is listed in Table 3-1.
Table 3-1: MH-7 to MH-6 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
9 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
30 – 50 ft Figure 3-1
10 90% Water Level
A section of pipe has a positive slope such that
the pipe is flowing at full capacity.
70 – 140 ft Figure 3-2
11 90% Water Level
A section of pipe has a positive slope such that
the pipe is flowing at full capacity.
260 – 290 ft Figure 3-3
12 45% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
310 – 320 ft Figure 3-4
13 65% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
390 – 410 ft Figure 3-5
MH-6 to MH-5:
No construction deficiencies were identified between MH-6 and MH-5.
MH-5 to MH-4:
A list of construction deficiencies between MH-5 and MH-4 is listed in Table 4-1.
Attachment A
Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project
8/4/2022
Page 3 of 4
Table 4-1: MH-5 to MH-4 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
14 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
20 – 30 ft Figure 4-1
15 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
110 – 120 ft Figure 4-2
16 100% Water Level
A section of pipe has a positive slope such that
the pipe is flowing at full capacity.
130 – 170 ft Figure 4-3
17 20% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
190 – 200 ft Figure 4-4
MH-4 to MH-3:
A list of construction deficiencies between MH-4 and MH-3 is listed in Table 5-1.
Table 5-1: MH-4 to MH-3 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
18 30% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe. Additionally,
a significant volume of debris has accumulated
in this section of pipe.
10 – 30 ft Figure 5-1
19 55% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
200 – 250 ft Figure 5-2
20 40% Water Level
A section of pipe has a positive slope creating
an increased WSE within the pipe.
260 – 270 ft Figure 5-3
MH-3 to MH-2:
A list of construction deficiencies between MH-3 and MH-2 is listed in Table 6-1.
Table 6-1: MH-3 to MH-2 List of Deficiencies
No. Deficiency Description
Approx.
Location
Associated
Photo
21
Longitudinal
Crack
A longitudinal crack appears at the crown of this
section of pipe.
200 – 240 ft Figure 6-1
Attachment A
Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project
8/4/2022
Page 4 of 4
Summary:
All construction deficiencies should be corrected prior to final completion of the Project in accordance
with the Contract Documents and TCEQ requirements.
Sincerely,
David Bennett
Project Manager
Eric Kong
Project Engineer
cc:
Patrick Sullivan
Director of Public Works
Mark McGinnis
Utility Superintendent
Phillip Laney
Assistant City Manager
Lupe Mireles
BuyBoard Consultant, Business Services
Attachments:
Attachment A – List of Deficiencies Photo Summary
Attachment B – Post-Construction Inclination Survey with FNI Notes
Attachment A
Attachment A
List of Deficiencies – Photo Summary
Attachment A
Figure 1-1: Deficiency #1 – Offset Joint
(Facing Manhole)
Figure 1-2: Deficiency #2 – 30% Water Level
(Facing Downstream)
Figure 1-3: Deficiency #3 – 30% Water Level
(Facing Downstream)
Figure 2-1: Deficiency #4 – 45% Water Level
(Facing Upstream)
Figure 2-2: Deficiency #5 – 45% Water Level
(Facing Upstream)
Figure 2-3: Deficiency #6 – 30% Water Level
(Facing Upstream)
Attachment A
Figure 2-4: Deficiency #7 – 30% Water Level
(Facing Upstream)
Figure 2-5: Deficiency #8 – 10% Water Level
(Facing Upstream)
Figure 3-1: Deficiency #9 – 30% Water Level
(Facing Downstream)
Figure 3-2: Deficiency #10 – 90% Water Level
(Facing Downstream)
Figure 3-3: Deficiency #11 – 90% Water Level
(Facing Downstream)
Figure 3-4: Deficiency #12 – 45% Water Level
(Facing Downstream)
Attachment A
Figure 3-5: Deficiency #13 – 65% Water Level
(Facing Downstream)
Figure 4-1: Deficiency #14 – 30% Water Level
(Facing Downstream)
Figure 4-2: Deficiency #15 – 30% Water Level
(Facing Downstream)
Figure 4-3: Deficiency #16 – 100% Water Level
(Facing Downstream)
Figure 4-4: Deficiency #17 – 20% Water Level
(Facing Downstream)
Figure 5-1: Deficiency #18 – 30% Water Level
(Facing Upstream)
Attachment A
Figure 5-2: Deficiency #19 – 55% Water Level
(Facing Upstream)
Figure 5-3: Deficiency #20 – 40% Water Level
(Facing Upstream)
Figure 6-1: Deficiency #21 – Longitudinal Crack
(Facing Downstream)
Attachment A
Attachment B
Post-Construction Inclination Survey with FNI
Notes
Attachment A
Inclination Survey
Upstream MH No:
11.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-9
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-8
City:
7.0 ft.
POST-12-224
Sea Level:
Street: Project name:
Total length:
221.9 ft.
6/2/2022 8:51 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
214.6 ft.
Direction:
D
CUES, Inc.
3600 Rio Vista Avenue
Orlando, FL 32805
Phone: 407-849-0190
Fax: 407-425-1569
Page 1 of 7
Inclination Survey
Attachment A
20'-40'
30% Water Level
160'-180'
30% WL
Inclination Survey
Upstream MH No:
7.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-8
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-7
City:
12.0 ft.
POST-12-340
Sea Level:
Street: Project name:
Total length:
341.9 ft.
6/2/2022 9:15 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
336.1 ft.
Direction:
D
Page 2 of 7
Inclination Survey
Attachment A
320'-330'
10% WL
180'-200'
30% WL
60'-100'
45%- WL
0'-20'
45% WL
300'-310'
30% WL
Inclination Survey
Upstream MH No:
12.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-7
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-6
City:
6.0 ft.
POST-12-533
Sea Level:
Street: Project name:
Total length:
443.8 ft.
6/2/2022 9:59 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
435.8 ft.
Direction:
D
Page 3 of 7
Inclination Survey
Attachment A
70'-140'
100% WL
260'-290'
100% WL
310'-320'
45% WL
390'-410'
65% WL
30'-50'
30% WL
Inclination Survey
Upstream MH No:
6.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-6
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-5
City:
6.0 ft.
POST-12-281
Sea Level:
Street: Project name:
Total length:
370.8 ft.
6/2/2022 10:55 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
362.4 ft.
Direction:
D
Page 4 of 7
Inclination Survey
Attachment A
Inclination Survey
Upstream MH No:
6.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-5
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-4
City:
12.0 ft.
POST-12-252
Sea Level:
Street: Project name:
Total length:
249.4 ft.
6/2/2022 11:19 AM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
246.6 ft.
Direction:
D
Page 5 of 7
Inclination Survey
Attachment A
20'-30'
30% WL
110'-120'
30% WL
130'-170'
100% WL
190'-200'
20% WL
Inclination Survey
Upstream MH No:
12.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-4
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-3
City:
11.0 ft.
POST-12-351
Sea Level:
Street: Project name:
Total length:
356.4 ft.
6/2/2022 12:29 PM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
347.8 ft.
Direction:
D
Page 6 of 7
Inclination Survey
Attachment A
260'-270'
40% WL
200'-250'
55% WL
10'-30'
30% WL
Inclination Survey
Upstream MH No:
11.0 ft.
Depth:
SAN ANTONIO
Downstream MH No:
Mainline ID:
MH-3
Depth:
VORTEX OGDEN
OGDEN
Sea Level:
MH-2
City:
7.2 ft.
POST-12-244
Sea Level:
Street: Project name:
Total length:
243.7 ft.
6/2/2022 1:16 PM
Start date/time:
Shape: Width:
C 12 in.
Material:
PE
Height:
MARCUS
Surveyed by: Weather:
1
Location code:
Purpose:
WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown.
Distance
Depth
Surveyed Distance:
239.3 ft.
Direction:
D
Page 7 of 7
Inclination Survey
Attachment A
200'-240'
Longitudinal Crack

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Item # 5 - Ogden Pipe Bursting Change Order

  • 1. CITY OF ALAMO HEIGHTS PUBLIC WORKS DEPARTMENT CITY COUNCIL AGENDA MEMORANDUM TO: Mayor and City Council FROM: Phil Laney, Assistant City Manager SUBJECT: Authorizing an amendment to the contract with Vortex Services in the amount of $57,215.00 for change orders related to the sewer rehabilitation project for Ogden to near Olmos Basin Dam DATE: December 12, 2022 SUMMARY Consideration of an amendment to the contract with Vortex Services in the amount of $57,215.00 for change orders related to the sewer rehabilitation project for Ogden to near Olmos Basin Dam. BACKGROUND INFORMATION In the FY 2021-22 Budget, the City Council appropriated funding in the amount of $535,000 for the purpose of rehabilitating a sewer main along Ogden, west through the Jack Judson Nature Trails, and ending just before the San Antonio Water System (SAWS) outfall below the Olmos Basin dam. The sewer rehabilitation would utilize a sewer pipebursting technique, where the existing sewer pipe would be demolished underground and simultaneously replaced with new sewer pipe. The City’s engineering firm, Freese and Nichols, Inc. (FNI), was tasked with project design at a cost of $39,900. Staff elected to utilize the Texas BuyBoard Cooperative (BuyBoard) in securing competitive bids to perform the work. Freese and Nichols solicited bid requests to five BuyBoard contractors offering sewer pipe bursting services. Two contractors responded with bids matching bid specifications, and Council authorized a contract with Vortex Services on March 14, 2022 for an amount of $373,215, plus a 5% contingency for a total of $391,825. After the construction to replace the 0.4 miles of sanitary sewer was completed, post-construction video footage and analysis identified a number of deficiencies in the rehabilitated sewer line, namely areas where the pipe slope did not meet Texas Commission on Environmental Quality (TCEQ) requirements and minimized the effectiveness of the sanitary sewer pipe. The proposed change order includes point repairs in prioritized deficient areas via excavation at the surface. Repairs will then be remedied and backfilled, returning the surface to its original condition. The proposed change order to Vortex Services is $57,125, for an amended project amount of $448,950. If the change order is authorized, the City Manager would authorize $10,000 to Freese and Nichols for engineering for the change order construction, for an amended project amount of $49,900. The total amended project cost of $498,850 remains within the original amount budgeted for the project.
  • 2. With approval of the change order, substantial completion of the improvements is anticipated by the end of February 2023, with final completion by March 31, 2023. POLICY ANALYSIS After consultation with the city engineer (FNI), city attorney, city manager, and Vortex Services, Council consideration is requested to amend the contract with Vortex to correct the deficiencies identified in the replacement sewer main. Despite a larger size pipe, the deficiencies hinder the pipe’s flow performance. The City’s engineer has concluded that the recommended repairs in the proposed change order will be able to meet the TCEQ requirements, reduce the need for more intensive and frequent maintenance of the sewer main throughout the useful life of the pipe, and reduce the risk of odors being released in the project vicinity. FISCAL IMPACT The amendment to the contract with Vortex Services is in the amount of $57,125.00 for change orders related to the sewer rehabilitation project to Ogden to near Olmos Basin Dam. If the amendment is authorized, the City Manager will amend the contract with Freese and Nichols for engineering services related to the change order repairs in an amount of $10,000.00. The total costs associated with the change order and engineering support is $67,215.00. City Council appropriated funding in the amount of $535,000.00 for a sewer main rehabilitation in the FY 2021-22 Budget. Funding for the proposed change order and associated engineering expenses will use the project’s unspent budgeted funds, the remainder of which will be carried forward into FY 2022-23. The amounts for the original contract, the proposed amendment, and the total amended contract amount for the sewer rehabilitation project are in the table below. Vendors Original Contract Proposed Amendment (Change Order) Total Amended Contract Vortex Services $391,825 $57,125 $448,950 Freese & Nichols $39,900 $10,000 $49,900 Total $431,725 $67,125 $498,850 COORDINATION The proposed change order was coordinated with Vortex Services, Freese and Nichols, the Public Works Director, City Attorney and City Manager. ATTACHMENTS Attachment A – Change Order _____________________ Phil Laney Assistant City Manager ______________________ Buddy Kuhn City Manager
  • 3. Change Order Change Order Page 1 of 6 Project Ogden Ln Sanitary Sewer Rehabilitation Project Number Owner City of Alamo Heights ALH21610 Contractor Vortex Services, LLC. Design Professional Freese and Nichols, Inc. Change Order No. 1 Date 11/21/2022 Make the following modifications to the Contract Documents: Item Description Change Amount 1 Point Repair to Area #1 – Sta. 23+24.58 $ 0.00 2 Point Repair to Area #2 – Sta. 19+68 to 21+00 $ 5,750.00 3 Point Repair to Area #3 – Sta. 18+78 to 19+23 $ 5,750.00 4 Point Repair to Area #4 – Sta. 17+60 to 18+06 $ 5,750.00 5 Point Repair to Area #5 – Sta. 15+86 to 17+60 $ 5,750.00 6 Point Repair to Area #6 – Sta. 13+09 to 14+90 $ 11,500.00 7 Point Repair to Area #7 – Sta. 07+54 to 08+15 $ 5,750.00 8 Point Repair to Area #8 – Sta. 03+99 to 04+72 $ 5,750.00 9 Condition Inspection to Area #9 – Sta. 01+00 to 01+45 $ 0.00 10 Final Television Inspections (w/ Inclinometer) $ 11,125.00 Net Change in Contract Price this Change Order $ 57,125.00 Net Change in Contract Times this Change Order 246 days a. Original Contract Price $ 373,215.00 b. Previously Approved Change Order/Contract Amendment Amounts $ 0.00 c. Adjusted Contract Price ( a + b ) $ 373,215.00 d. Contract Amendment Amount $ 57,125.00 e. Revised Contract Price ( c + d ) $ 430,340.00 f. Percent Change in Contract Price to Date 15.3 % Original Previous Current Substantial Completion Date 6/27/2022 6/27/2022 2/28/2023 Final Completion Date 7/27/2022 7/27/2022 3/30/2023 Attachment A
  • 4. Change Order Change Order Page 2 of 6 CONTRACTOR OBLIGATIONS: Contractor will perform the scope of work attached as Exhibit “A” and incorporated herein by reference for all purposes (hereinafter referred to for all purposes in this Change Order as “Repair”). The corrected pipe slopes within the Repair shall meet TCEQ requirements being max slope of 4.88% and min slope of 0.20%. Contractor will leave the surface equal to (or better) than existing, including repairs or replacing any streets, roads, curbs, paths, utilities, or landscaping damaged in conformance with City Ordinances and construction standards. Contractor will perform the repair in conformance with the narrative attached as Exhibit “B” attached hereto and incorporated herein by reference for all purposes (hereinafter referred to for all purposes in this Change Order as the “Narrative”); however, in the event of a conflict between the Narrative and Repair or this Change Order, the requirement stated in the Repair, Change Order and Contract will prevail. The Contractor and City agree and acknowledge that the Repair is intended to be a complete, safe and operational project, and Contractor will provide all materials, services and equipment expressly or implicitly included in the Repair and Narrative to complete the Work for the compensation stated in this Change Order. Contractor will maintain bonds and insurance during Repair per the Contract. All terms and provisions of the Contract Documents remain in effect except as specifically modified by this Change Order. CITY OBLIGATIONS: The compensation in this Change Order is the full, complete, and final compensation for all costs Contractor may incur because of or relating to this change whether said costs are known, unknown, foreseen, or unforeseen at this time; and CONTRACTOR WAIVES AND RELEASES ALL CLAIMS FOR PAYMENT OR COMPENSATION IN EXCESS OF THE BELOW AMOUNT, INCLUDING BUT NOT LIMITED TO THOSE FOR UNEXPECTED OR DIFFERING SUBSURFACE OR SITE CONDITIONS, MATERIAL PRICE INCREASES AND/OR ESCALATIONS, TARIFFS, MATERIAL OR EQUIPMENT ESTIMATION ERRORS OR QUANTITIES, INFLATION, OR MATERIAL OR SUPPLY CHAIN DISRUPTIONS, UTILITY CONFLICTS, DELAY, EXTENDED OVERHEAD, RIPPLE OR IMPACT COST (OTHER THAN THOSE DELAYS INTENTIONALLY OR RECKLESSLY CAUSED BY OWNER AFTER THE FULL EXECUTION OF THIS CHANGE ORDER). TIME: Time is of the essence with respect to the Change Order. The changes in Contract Times are the complete and final adjustments for impacts to the ability of Contractor to complete the Work within the Contract Times and are the only adjustments to which Contractor is entitled. RELEASES: UPON FINAL COMPLETION OF REPAIR WITHIN THE TIME PROVIDED HEREIN, CITY AGREES TO RELEASE AND WAIVE ANY LIQUIDATED DAMAGES ON THE CONTRACT AND CLAIMS (KNOWN OR UNKNOWN) IDENTIFIED IN CITY CORRESPONDENCE DATED 8/4/2022 ATTACHED AS EXHIBIT “C” STRICTLY LIMITED TO ALLEGED IMPROPER PIPE SLOPE. CONTRACTOR WAIVES AND RELEASES CITY FROM ANY KNOWN OR UNKNOWN CLAIMS IN ANYWAY RELATING TO DELAYS, EXTENDED OVERHEAD, RIPPLE OR IMPACT COST, INCREASED COMPENSATION, OR INCREASED COSTS OF CONSTRUCTION OCCURRING OR ACCRUING PRIOR TO THE DATE OF THIS CHANGE ORDER OR ANY OTHER EFFECT ON CHANGED OR UNCHANGED WORK BECAUSE OF THIS CHANGE ORDER. CHANGES: Any changes recommended by Engineer in scope or time of Repair will be negotiated by the parties in good faith and incorporated into a written and fully executed Change Order or Work Change Directive; however, in no event will Contractor be entitled to overhead or profit on any changes to the Repair; and any costs, fees, or expenses will be passed through at Contractor’s cost without overhead or profit. It is understood and agreed by the parties hereto that this settlement is a compromise of disputed claims and the concessions made in connection with this settlement are not to be construed as an admission of liability on the part of any party to this Change Order and are solely to avoid the cost and uncertainty of litigation. Attachments: • REQUEST FOR A CHANGE PROPOSAL No. 1 dated 10/25/2022, with attachments – EXHIBIT A • REPAIR NARRATIVE – EXHIBIT B • IDENTIFIED CONSTRUCTION DEFECTS LETTER DATED 8/4/2022 – EXHIBIT C Attachment A
  • 5. Change Order Change Order Page 3 of 6 Recommended by Design Professional Name Date Approved by Contractor Approved by Owner Name Date Name Date Attachment A
  • 6. Change Order Change Order Page 4 of 6 EXHIBIT “A” (See Attachment) Attachment A
  • 7. Request for a Change Proposal Request for a Change Proposal Page 1 of 1 Project Ogden Ln Sanitary Sewer Rehabilitation Project Number Owner City of Alamo Heights ALH21610 Contractor Vortex Services, LLC. Design Professional Freese and Nichols, Inc. Request for Change Proposal No. 1 Description 12-Inch Sanitary Sewer Corrections Specification SAWS Standard Item No. 848 Drawing No. SS-1 Detail Description Corrections to construction deficiencies of a 12-inch sanitary sewer main. Reference Document ☒ Request for a Change Proposal No. 1 ☐ Work Change Directive No. ☐ Shop Drawing Deviation Request No. ☐ Contract Document Owner requests a Change Proposal for the following modifications to the Contract Documents: Contractor to provide labor, material, and equipment costs for corrections to the 12” HDPE sanitary sewer main as described in Attachment A – RFP No. 1 – 12-Inch Sanitary Sewer Corrections. Disclaimer Owner requests that Contractor prepare a Change Proposal for the changes in the Contract Documents described in this Request for a Change Proposal. The compensation offered for this Change Proposal is to be the full, complete, and final compensation for all costs Contractor may incur because of or relating to this change whether said costs are known, unknown, foreseen, or unforeseen at this time, including without limitation, any cost for delay, extended overhead, ripple or impact cost, or any other effect on changed or unchanged Work because of this Change Proposal. Requested changes in Contract Times are to be the complete and final adjustments for impacts to the ability of Contractor to complete the Work within the Contract Times and are the only adjustments to which Contractor will be entitled. All terms and provisions of the Contract Documents remain in effect except as specifically modified by this Change Proposal. Authorization to proceed with changes must be approved by the Owner in accordance with the Contract Documents. This RFP and scope of work outlined herein is intended to explore a compromise of the disputes and controversies existing between the City and Vortex with respect to the grade deficiencies in the Work to avoid the cost and uncertainty of litigation. By proposing or considering this RFP, neither party is conceding liability or fault to any other party and both parties are reserving all rights under contract and law until a proposal is accepted. Reason for the Change Proposal Corrections required to comply with TCEQ Ch. 217 slope requirements for sanitary sewer lines. Attachments Attachment A – RFP No. 1 – 12-Inch Sanitary Sewer Corrections Memo Requested by Eric Kong, P.E. Date 10/25/2022 Follow Up Action by Owner’s Project Team Change Proposal No. 1 ☐ Accepted ☐ Not Accepted - Revise and Resubmit ☐ Cancelled Attachment A
  • 8. 9601 McAllister Fwy, Suite 1008  San Antonio, Texas 78216  210-298-3800  FAX 210-298-3801 www.freese.com MEMORANDUM This memorandum outlines Freese and Nichols, Inc. (FNI) recommendations for corrections to the 12- inch HDPE sanitary sewer main located in the vicinity of Ogden Ln, Alamo Heights TX. Any change to the agreed upon proposal shall remain in full force for the entirety of the project unless an alternative is presented in writing to the City and Engineer for review & approval prior to any further work. Corrections Summary: The following segments of the existing 12” HDPE sanitary sewer main are recommended for correction. The proposed construction methods for correction shall be determined by the Contractor and must be submitted to the Owner and Engineer for review and approval prior to construction. Area No. Location Required Correction Associated Deficiency(s) #1 Sta. 23+24.58 - Lower invert elevation of downstream connection to original elevation per Owner’s direction. Contractor will address this correction as part of the Contractor’s warranty as stipulated in the Contract Documents. Deficiency #1 #2 Sta. 19+68 to 21+00 - Correct pipe slope. Deficiency #2 Deficiency #3 #3 Sta. 18+78 to 19+23 - Correct pipe slope. Deficiency #4 #4 Sta. 17+60 to 18+06 - Correct pipe slope. Deficiency #5 Deficiency #6 #5 Sta. 15+86 to 17+60 - Correct pipe slope. Deficiency #7 Deficiency #8 #6 Sta. 13+09 to 14+90 - Correct pipe slope. - Any disturbances to existing roads will be repaired in accordance with City of San Antonio Miscellaneous Construction Standards II and Owner Requirements. Deficiency #9 Deficiency #10 Deficiency #11 #7 Sta. 07+54 to 08+15 - Correct pipe slope. Deficiency #12 #8 Sta. 03+99 to 04+72 - Correct pipe slope. Deficiency #13 Deficiency #14 TO: Patrick Sullivan – City of Alamo Heights Buddy Kuhn – City of Alamo Heights Phillip Laney – City of Alamo Heights Mark McGinnis – City of Alamo Heights FROM: David Bennett, P.E. Eric Kong, P.E. SUBJECT: RFP No. 1 – 12-Inch Sanitary Sewer Corrections DATE: October 25th , 2022 PROJECT: Ogden Ln Sanitary Sewer Rehabilitation Attachment A
  • 9. Ogden Ln Sanitary Sewer Rehabilitation – RFP #1 October 20th , 2022 Page 2 of 2 #9 Sta. 01+00 to 01+45 - Clean existing pipe and re-televise existing pipe to confirm there is no damage, including cracking. If damaged is confirmed, Contractor shall provide a proposed remediation method. Deficiency #15 All corrections will be in accordance with the Contract Documents, including the following San Antonio Water System (SAWS) and City of San Antonio (CoSA) Standard Specifications and Details: - Item No. 100 Mobilization - Item No. 101 Preparing Right-of-Way - Item No. 103 Revegetation - Item No. 550 Trench Excavation Safety Protection - Item No. 804 Excavation, Trenching and Backfill - Item No. 848 Sanitary Sewers - Item No. 849 Sanitary Sewer Testing - Item No. 865 Bypass Pumping Small Diameter Sanitary Sewer Mains - Item No. 866 Sanitary Sewer Main Television Inspection - Item No. 868 Sanitary Sewer System Cleaning - CoSA Miscellaneous Construction Standards I - CoSA Miscellaneous Construction Standards II For corrections to pipe slopes, the corrected slopes must be uniform and comply with TCEQ Ch. 217 requirements for 12-inch pipe, which requires a minimum of 0.20% and a maximum of 4.88%. Contractor shall meet all embedment and backfill requirements as specified in SAWS Standard Specification Item No. 804. Contractor will also measure the corrected pipe slopes in accordance with SAWS Standard Specification Item No. 848 and notify the Owner and Engineer of all recorded measurements prior to backfill. Contractor shall be responsible for restoring any above-grade disturbances in accordance with the Contract Documents, including damages to the Judson Nature Trail. Any repairs to the Judson Nature Trail will be in accordance with Specification 32 15 43 “Stalok® Paving Material Waterless Natural Pavement for Pathways and Patios”. Post-Construction Requirements: Upon completion of all corrections, Contractor shall test and inspect the rehabilitated sanitary sewer main in accordance with SAWS Standard Specification Item No. 849 and Item No. 866. The post- construction televising shall include an inclination survey to verify all pipe slopes meet TCEQ Ch. 217 requirements. All other closeout procedures for the Project shall be in accordance with Specification 01 70 00 and Contract Documents. Sincerely, Eric Kong, P.E. Project Engineer Attachments: Appendix A – Corrections Summary Attachment A
  • 11. PROP. INSERTION PIT AREA FOR PIPEBURSTING PROP. INSERTION PIT AREA FOR PIPEBURSTING 2 0 ' 2 0 ' 20 ' 20 ' 1+00 2+00 4+00 6+00 8+00 10+00 12+00 2.77% S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S SS SS SS SS SS SS SS SS S S S S S S S S S S L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C LO C LO C LO C LO C LO C LO C LO C L O C L O C L O C L O C L O C LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC S S S S SS S S STA 1+00.00 EXIST. SSMH (MH-2) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 7.2' N: 13721736.3800 E: 2135548.6370 RIM ELV.= 695.04' FL. NW= 687.89' - 10" PVC FL. NE= 688.08' - 10" PVC FL. SE= 687.87' - 10" PVC SEE NOTE 7, 10, AND 13 STA 3+43.69 EXIST. SSMH (MH-3) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 11' N: 13721923.2000 E: 2135705.1060 RIM ELV.= 705.84' FL. SW= 694.84' - 10" PVC FL. NE= 703.46' - 6" CAST IRON FL. E= 694.86' - 10" PVC SEE NOTE 7, 10, AND 13 STA 6+94.91 EXIST. SSMH (MH-4) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 12' N: 13721990.6700 E: 2136049.8250 RIM ELV.= 708.41' FL. W= 697.27' - 10" PVC FL. NE= 697.28' - 10" PVC FL. SE= 702.55' - 8" PVC SEE NOTE 7, 10, AND 13 STA 9+46.88 EXIST. SSMH (MH-5) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 6' N: 13722123.7142 E: 2136263.8105 RIM ELV.= 704.60' FL. NE= 669.42' - 8" PVC FL. SW= 699.27' - 10" PVC SEE NOTE 7, 10, AND 13 STA 12+27.79 EXIST. SSMH (MH-6) TO BE REMOVED MH DEPTH 6' N: 13722277.7300 E: 2136498.7310 RIM ELV.= 708.97' FL. NE= 703.71' - 8" PVC FL. SW= 703.59' - 8" PVC PIPE BURST APPROX. 244 LF OF EXIST. 10" SAN. SEW ER M AIN W ITH 12" HDPE SDR-17 PIPE IN ACCORDANCE W ITH SAW S STANDARD SPECIFICATION 900 SEE NOTE 9 PIPE BURST APPROX. 351 LF OF EXIST. 10" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 SEE NOTE 9 PIPE BURST APPROX. 252 LF OF EXIST. 10" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 PIPE BURST APPROX. 281 LF OF EXIST. 8" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 LIMITS OF 100-YR FLOODPLAIN EXIST. 10" PVC S.S. LINE CONTROL PT. # 900 MANHOLE LID N: 13721736.3800 E: 2135548.6370 EXIST. 10" PVC S.S. LINE EXIST. 6" CAST IRON S.S. LINE EXIST. 8" PVC S.S. LINE EXIST. 8" PVC S.S. LINE EXIST. 8" PVC S.S. LINE EXIST. WATER LINE SEE NOTE 2 EXIST. TELECOM LINE AND OVERHEAD ELECTRIC SEE NOTE 2 PAVEMENT REPAIR (TO BE RESTORED TO EXIST. CONDITIONS) APPROX. 5 SY SEE DTL. 6/DT-2 PROP. INSERTION PIT AREA FOR PIPEBURSTING PROP. INSERTION PIT AREA FOR PIPEBURSTING PROP. INSERTION PIT AREA FOR PIPEBURSTING 2 0 ' 2 0 ' 12+00 14+00 16+00 18+00 20+00 22+00 23+25 S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S S L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C L O C LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC LOC L O C S S S S S S S S SS OHE OHE OHE OHE OHE OHE W W W W W W W W STA 12+27.79 EXIST. SSMH (MH-6) TO BE REMOVED MH DEPTH 6' N: 13722277.7300 E: 2136498.7310 RIM ELV.= 708.97' FL. NE= 703.71' - 8" PVC FL. SW= 703.59' - 8" PVC STA 21+00.45 EXIST. SSMH (MH-8) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 7' N: 13722497.9800 E: 2137306.7230 FL. W= 716.60' - 8" PVC FL. NE= 716.77' - 8" PVC FL. SW= 719.50' - 4" PVC FL. SW= 717.80' - 6" CLAY SEE NOTE 7 AND 11 STA 23+24.58 EXIST. SSMH (MH-9) CP-1 N: 13722664.6000 E: 2137456.6300 TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 RIM ELV.= 732.76' NW= 724.50' - 8" NE= 722.67' - 8" PVC SW= 722.53' - 8" PVC MH DEPTH 11' SEE NOTE 7 STA 17+60.67 EXIST. SSMH (MH-7) TO BE REHABILITATED IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 910 MH DEPTH 12' N: 13722529.4600 E: 2136968.4060 RIM ELV.= 723.39' FL. E= 711.58' - 8" PVC FL. SW= 711.54' - 8" PVC PIPE BURST APPROX. 533 LF OF EXIST. 8" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 SEE NOTE 9 PIPE BURST APPROX. 340 LF OF EXIST. 8" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 PIPE BURST APPROX. 224 LF OF EXIST. 8" SAN. SEWER MAIN WITH 12" HDPE SDR-17 PIPE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 900 SPECIFICATION 900 EXIST. 4" PVC S.S. LINE EXIST. 6" PVC S.S. LINE LIMITS OF 100-YR FLOODPLAIN EXIST. WATER AND COMMUNICATION UTILITIES IDENTIFIED IN THIS AREA SEE NOTE 2 SERVICE LATERAL SEE NOTE 3 SERVICE LATERAL SEE NOTE 3 SERVICE LATERAL SEE NOTE 3 AND 4 STA 13+09.77 INSTALL: (1) 4' DIA. PRECAST MH PER SAWS STANDARD SPECIFICATION 852 AND DTL. 4/DT-1 (1) VENT PER DTL. 4/DT-2. SEE NOTE 7 CONNECT TO PROP. 12" HDPE (N.S.P.I.) N: 13722316.4589 E: 2136570.9909 SHEET SEQ. this sheet, adjust scale. drawing. If not one inch on Bar is one inch on original ISSUE NO. VERIFY SCALE 0 1 DATE BY F&N JOB NO. FILE NAME ALH21610 1/19/22 CHECKED REVISED DRAWN DESIGNED DATE CITY OF ALAMO HEIGHTS OGDEN LANE SANITARY SEWER REHABILITATION Plot Date: 1/19/2022 10:38 AM Plot By: 03576 Filename: N:WTUDrawingsUT-ALH-SS-OVER01.dwg UT-ALH-SS-OVER01.dwg Last Saved: 1/19/2022 10:34 AM Saved By: 03576 Filename: N:WTUDrawingsUT-ALH-SS-OVER01.dwg ACAD Rel: 24.1s (LMS Tech) Freese and Nichols, Inc. Texas Registered Engineering Firm F-2144 9601 McAllister Freeway, Suite 1008 San Antonio, Texas 78216 Phone - (210) 298-3800 Web - www.freese.com CIVIL PIPE BURSTING PLAN SS-1 EHK EWL DTB NORTH NORTH M A T C H L I N E S T A 1 2 + 0 0 M A T C H L I N E S T A 1 2 + 0 0 CAUTION!! UNDERGROUND GAS, WATER, ELECTRIC, TELEPHONE, CABLE TV, AND OTHER UTILITIES MAY EXIST WITHIN THE WORK AREA. THE UTILITIES SHOWN ON THESE PLANS ARE APPROXIMATE AND FOR INFORMATION ONLY. ADDITIONAL UTILITIES MAY EXIST WITHIN THE WORK AREA AND MAY NOT BE INDICATED ON THE PLANS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGES TO ALL UTILITIES CAUSED BY THE CONTRACTOR'S OPERATION. G R E E L Y S T . I M L A Y S T . M O R S E S T . OGDEN LN. OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 2743259 SCOTT JOHN R & BETHANNE OWNER ID: 125256 SCOTT BOECKMANN MICHAEL & KRISTI OWNER ID: 125257 YOUNG PAMELA S & ROBERT B OWNER ID: 3270956 SILVERMAN ALAN K OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 125243 CALVERT RICHARD W & MARGARET DOANE CALVERT OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 70010 CITY OF SAN ANTONIO OWNER ID: 70010 CITY OF SAN ANTONIO PROP. LIMITS OF CONSTRUCTION NOTES: 1. BYPASS PUMPING PLAN SHALL BE IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 865. 2. CONTRACTOR MUST NOTIFY THE CITY OF ANY ROAD CLOSURES A MINIMUM OF 48 HOURS IN ADVANCE AND CLOSURE OF OGDEN LANE IS LIMITED TO A MAXIMUM OF 24 HOURS. CONTRACTOR TO FIELD VERIFY ALL EXISTING UTILITIES IN THE AREA PRIOR TO CONSTRUCTION. 3. LOCATION OF SERVICE LATERAL IS APPROXIMATE ONLY. CONTRACTOR SHALL FIELD VERIFY LOCATION PRIOR TO REPLACEMENT. ALL ACTIVE SAN. SEWER SERVICE LATERALS SHALL BE RECONNECTED AND MODIFIED WITH A CLEANOUT IN ACCORDANCE WITH SAWS STANDARD SPECIFICATION 1109 & 854. CONTRACTOR SHALL CONFIRM ACTIVE SERVICE LATERALS. 4. CONTRACTOR SHALL FIELD VERIFY THAT CAPPED SAN. SEWER SERVICE LATERALS ARE NO LONGER IN SERVICE. 5. CONTRACTOR IS RESPONSIBLE FOR REPLACEMENT OF ALL SIDEWALK, CURB, LANDSCAPING, ETC. DISTURBED DURING INSTALLATION OF SAN. SEWER MATERIAL FOR EXISTING JUDSON NATURE TRAIL IS STALOK PRODUCED BY STABILIZER SOLUTIONS AND MUST BE REPLACED IF DAMAGED DURING CONSTRUCTION PER SPECIFICATIONS. REPLACEMENT OF TRAIL MATERIAL, SIDEWALK, CURB, LANDSCAPING, AND ALL OTHER EXISTING ABOVE GRADE CONDITIONS SHALL BE NSPI. 6. IN LOCATIONS WHERE SANITARY SERVICE LATERAL REPLACEMENTS CROSS EXISTING CURB, CONTRACTOR SHALL RESTORE CURB TO MATCH. EXISTING. NO SEPARATE PAY ITEM. 7. MANHOLE LIDS SHALL BE GASKETED AND BOLTED DOWN TO PREVENT INFLOW AND OFF GASSING AS NOTED ON THIS SHEET, REPLACE MANHOLE COVER PER DETAIL 3/DT-2. 8. CONTRACTOR TO MAXIMIZE PIPE LENGTHS BETWEEN JOINTS WHEN POSSIBLE AND ALL JOINTS SHALL BE FUSED PER SAWS STANDARD SPECIFICATION 900. 9. CONTRACTOR TO PROTECT ALL EXISTING ABOVE-GRADE STRUCTURES AND VEGETATION IN THIS AREA. ANY DAMAGE TO PROPERTY DURING CONSTRUCTION IDENTIFIED BY THE OWNER SHALL BE REPLACED OR REPAIRED BY THE CONTRACTOR AT NO ADDITIONAL COST TO OWNER. 10. PROJECT AREA WITHIN JUDSON NATURE TRAILS AREA IS PRONE TO FLOODING DURING STORM EVENTS. CONTRACTOR TO REMOVE ALL EQUIPMENT AND COVER ALL OPENINGS WITHIN THIS AREA A MINIMUM OF 24 HOURS BEFORE AN ANTICIPATED STORM EVENT. 11. EXISTING RIPRAP IN CREEK BED SHALL BE REPLACED IF DAMAGED DURING CONSTRUCTION. 12. CONTRACTOR TO REQUEST APPROVAL OF ANY TREE REMOVAL PRIOR TO CONSTRUCTION AND MUST ABIDE BY ALL TREE PROTECTION REQUIREMENTS AS DICTATED BY OWNER AND SHT. DT-7. 13. CONTRACTOR TO PROVIDE VIDEO RECORD OF ABOVE-GRADE PROJECT AREA FROM STA. 1+00.00 TO STA. 12+27.79 PRIOR TO CONSTRUCTION IN ACCORDANCE WITH SPECIFICATION 01 33 06. VIDEO RECORD DATA TO BE PROVIDED TO ENGINEER & CITY PRIOR TO CONSTRUCTION IN THIS AREA. EXIST. SS LINE TO BE PIPE BURST SEE NOTE 12 SEE NOTE 12 SEE NOTE 12 EXIST. UNDERGROUND TELEPHONE EXIST. SS LINE EXIST. WATER LINE EXISTING SERVICE (RECONNECT) EXIST. GAS LINE EXIST. OVERHEAD ELECTRICAL EXIST. MANHOLES EXIST. FLOOD PLAIN 1/19/2022 Area #2 Sta. 19+68 to 21+00.45 Area #3 Sta. 18+78 to 19+23 Area #4 Sta. 17+60.67 to 18+06 Area #9 Sta. 1+00 to 1+45.00 Area #8 Sta. 3+99 to 4+72 Area #7 Sta. 7+54 to 8+15 Area #6 Sta. 13+09.77 to 14+90 Area #5 Sta. 15+86 to 17+60.67 Area #1 Sta. 23+24.58 Correction Areas Attachment A
  • 12. Inclination Survey Upstream MH No: 11.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-9 Depth: VORTEX OGDEN OGDEN Sea Level: MH-8 City: 7.0 ft. POST-12-224 Sea Level: Street: Project name: Total length: 221.9 ft. 6/2/2022 8:51 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 214.6 ft. Direction: D CUES, Inc. 3600 Rio Vista Avenue Orlando, FL 32805 Phone: 407-849-0190 Fax: 407-425-1569 Page 1 of 7 Inclination Survey Deficiency #1 Area #1 Attachment A
  • 13. Inclination Survey Upstream MH No: 7.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-8 Depth: VORTEX OGDEN OGDEN Sea Level: MH-7 City: 12.0 ft. POST-12-340 Sea Level: Street: Project name: Total length: 341.9 ft. 6/2/2022 9:15 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 336.1 ft. Direction: D Page 2 of 7 Inclination Survey Deficiency #6 Deficiency #4 Deficiency #3 Deficiency #2 Deficiency #5 132'-0" 45'-0" 45'-0" Area #2 Area #3 Area #4 Attachment A
  • 14. Inclination Survey Upstream MH No: 12.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-7 Depth: VORTEX OGDEN OGDEN Sea Level: MH-6 City: 6.0 ft. POST-12-533 Sea Level: Street: Project name: Total length: 443.8 ft. 6/2/2022 9:59 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 435.8 ft. Direction: D Page 3 of 7 Inclination Survey Deficiency #8 Deficiency #9 Deficiency #10 Deficiency #11 Deficiency #7 174'-0" 180'-0" Area #5 Area #6 Attachment A
  • 15. Inclination Survey Upstream MH No: 6.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-6 Depth: VORTEX OGDEN OGDEN Sea Level: MH-5 City: 6.0 ft. POST-12-281 Sea Level: Street: Project name: Total length: 370.8 ft. 6/2/2022 10:55 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 362.4 ft. Direction: D Page 4 of 7 Inclination Survey Attachment A
  • 16. Inclination Survey Upstream MH No: 6.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-5 Depth: VORTEX OGDEN OGDEN Sea Level: MH-4 City: 12.0 ft. POST-12-252 Sea Level: Street: Project name: Total length: 249.4 ft. 6/2/2022 11:19 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 246.6 ft. Direction: D Page 5 of 7 Inclination Survey Deficiency #12 60'-0" Area #7 Attachment A
  • 17. Inclination Survey Upstream MH No: 12.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-4 Depth: VORTEX OGDEN OGDEN Sea Level: MH-3 City: 11.0 ft. POST-12-351 Sea Level: Street: Project name: Total length: 356.4 ft. 6/2/2022 12:29 PM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 347.8 ft. Direction: D Page 6 of 7 Inclination Survey Deficiency #14 Deficiency #13 72'-0" Area #8 Attachment A
  • 18. Inclination Survey Upstream MH No: 11.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-3 Depth: VORTEX OGDEN OGDEN Sea Level: MH-2 City: 7.2 ft. POST-12-244 Sea Level: Street: Project name: Total length: 243.7 ft. 6/2/2022 1:16 PM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 239.3 ft. Direction: D Page 7 of 7 Inclination Survey Deficiency #15 45'-0" Area #9 Attachment A
  • 19. Change Order Change Order Page 5 of 6 EXHIBIT “B” The overall process will include evaluating information from your RFP#1 dated 10/25/22 to clearly define the areas to address the critical sags. Our team will use a push camera inserted into the lines to visually verify the sags identified. All proposed areas for correction areas will be communicated to Owner and Engineer for approval prior to start of work. Any deviations to correction areas that differ from what’s specified in RFP #1 will be pointed out for approval. We will excavate down on those areas to expose the pipe and then use survey equipment to improve the grade at those areas. We will keep the push camera in the line to again visually verify those sags are being addressed. It is important to clarify, this will help improve the flow characteristics of those sections of pipe but it will not completely realign the entire length of the pipe as only open-cutting and relaying the entire line section would achieve this. There may be areas where we will have to cut into the pipe and insert the push camera given the limiting constraints of the cable available for push cameras but those areas will be reconnected using a full-circle stainless repair clamp identical to how we joined sections of pipe during the pipe bursting process at entry and exit pit locations. Any cutting into the pipe will be communicated to the Engineer and Owner for approval prior to work commencing. In areas where we need to lift the pipe to remove sags, we will use crushed rock to bed the pipe and ensure the alignment will not move. In areas where the pipe needs to be lowered, we will dig out under the pipe and again bed with crushed rock to secure the alignment. Once we have improved the grade, we will measure the exposed pipe slope using a grading rod and a level gauge. After confirmation of appropriate pipe slope, we will then begin backfilling with native material in lifts to ensure proper compaction. Upon completion of this, we will do another post television inspection w/ inclinometer to verify all areas identified have been sufficiently addressed. It will be critical to have some field time decisions including inspections, engineering, and our crew management when we encounter obstacles above the pipe the City of Alamo Heights may not want disturbed. This includes but may not be limited to large trees, Staloc walking path material, and impacts to roadways. Attachment A
  • 20. Change Order Change Order Page 6 of 6 EXHIBIT “C” (See Attachment) Attachment A
  • 21. 9601 McAllister Fwy., Suite 1008 + San Antonio, Texas 78216 + 210-298-3800 + FAX 817-735-7491 August 4, 2022 Jedidiah Brewer Senior Project Manager Vortex Companies 18150 Imperial Valley Dr Houston, TX 77060 Re: Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project Dear Mr. Brewer: This letter outlines Freese and Nichols, Inc. (FNI) construction review of the City of Alamo Heights Ogden Lane Sanitary Sewer Rehabilitation Project (Project). The data sources used for the review are summarized in Table 1-1. The construction deficiencies for the rehabilitated sanitary sewer line are described in the following sections. Photo evidence of these deficiencies are provided in Attachment A and are sourced from Cleanview Resources LLC post-construction CCTV footage. A post-construction inclination survey was provided by CUES, Inc. and is included as Attachment B. The inclination survey includes notes from FNI highlighting the deficiency areas based on post-construction CCTV footage. Table 1-1: Construction Review Data Source Information Date Performed Performed By (City/Contractor) Pre-Construction CCTV 3/17/2022 IT Pipes (Contractor) Post-Construction CCTV #1 6/2/2022 CUES, Inc. (Contractor) Post-Construction CCTV #2 7/18/2022 Cleanview Resources LLC (City) MH-9 to MH-8: A list of construction deficiencies between MH-9 and MH-8 is provided in Table 1-2. Table 1-2: MH-9 to MH-8 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 1 Raised Outlet City has noted that the outlet of MH-9 appears to be raised 4-inches higher than the prior connection creating an increased WSE in the manhole. MH-9 Figure 1-1 2 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 20 – 40 ft Figure 1-2 3 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 160 – 480 ft Figure 1-3 www.freese.com Attachment A
  • 22. Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project 8/4/2022 Page 2 of 4 MH-8 to MH-7: A list of construction deficiencies between MH-8 and MH-7 is provided in Table 2-1. Table 2-1: MH-8 to MH-7 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 4 45% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 0 – 20 ft Figure 2-1 5 45% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 60 – 100 ft Figure 2-2 6 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 180 – 200 ft Figure 2-3 7 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 300 – 310 ft Figure 2-4 8 10% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 320 – 330 ft Figure 2-5 MH-7 to MH-6: A list of construction deficiencies between MH-7 and MH-6 is listed in Table 3-1. Table 3-1: MH-7 to MH-6 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 9 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 30 – 50 ft Figure 3-1 10 90% Water Level A section of pipe has a positive slope such that the pipe is flowing at full capacity. 70 – 140 ft Figure 3-2 11 90% Water Level A section of pipe has a positive slope such that the pipe is flowing at full capacity. 260 – 290 ft Figure 3-3 12 45% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 310 – 320 ft Figure 3-4 13 65% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 390 – 410 ft Figure 3-5 MH-6 to MH-5: No construction deficiencies were identified between MH-6 and MH-5. MH-5 to MH-4: A list of construction deficiencies between MH-5 and MH-4 is listed in Table 4-1. Attachment A
  • 23. Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project 8/4/2022 Page 3 of 4 Table 4-1: MH-5 to MH-4 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 14 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 20 – 30 ft Figure 4-1 15 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 110 – 120 ft Figure 4-2 16 100% Water Level A section of pipe has a positive slope such that the pipe is flowing at full capacity. 130 – 170 ft Figure 4-3 17 20% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 190 – 200 ft Figure 4-4 MH-4 to MH-3: A list of construction deficiencies between MH-4 and MH-3 is listed in Table 5-1. Table 5-1: MH-4 to MH-3 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 18 30% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. Additionally, a significant volume of debris has accumulated in this section of pipe. 10 – 30 ft Figure 5-1 19 55% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 200 – 250 ft Figure 5-2 20 40% Water Level A section of pipe has a positive slope creating an increased WSE within the pipe. 260 – 270 ft Figure 5-3 MH-3 to MH-2: A list of construction deficiencies between MH-3 and MH-2 is listed in Table 6-1. Table 6-1: MH-3 to MH-2 List of Deficiencies No. Deficiency Description Approx. Location Associated Photo 21 Longitudinal Crack A longitudinal crack appears at the crown of this section of pipe. 200 – 240 ft Figure 6-1 Attachment A
  • 24. Letter of Construction Deficiencies – Ogden Ln Sanitary Sewer Rehabilitation Project 8/4/2022 Page 4 of 4 Summary: All construction deficiencies should be corrected prior to final completion of the Project in accordance with the Contract Documents and TCEQ requirements. Sincerely, David Bennett Project Manager Eric Kong Project Engineer cc: Patrick Sullivan Director of Public Works Mark McGinnis Utility Superintendent Phillip Laney Assistant City Manager Lupe Mireles BuyBoard Consultant, Business Services Attachments: Attachment A – List of Deficiencies Photo Summary Attachment B – Post-Construction Inclination Survey with FNI Notes Attachment A
  • 25. Attachment A List of Deficiencies – Photo Summary Attachment A
  • 26. Figure 1-1: Deficiency #1 – Offset Joint (Facing Manhole) Figure 1-2: Deficiency #2 – 30% Water Level (Facing Downstream) Figure 1-3: Deficiency #3 – 30% Water Level (Facing Downstream) Figure 2-1: Deficiency #4 – 45% Water Level (Facing Upstream) Figure 2-2: Deficiency #5 – 45% Water Level (Facing Upstream) Figure 2-3: Deficiency #6 – 30% Water Level (Facing Upstream) Attachment A
  • 27. Figure 2-4: Deficiency #7 – 30% Water Level (Facing Upstream) Figure 2-5: Deficiency #8 – 10% Water Level (Facing Upstream) Figure 3-1: Deficiency #9 – 30% Water Level (Facing Downstream) Figure 3-2: Deficiency #10 – 90% Water Level (Facing Downstream) Figure 3-3: Deficiency #11 – 90% Water Level (Facing Downstream) Figure 3-4: Deficiency #12 – 45% Water Level (Facing Downstream) Attachment A
  • 28. Figure 3-5: Deficiency #13 – 65% Water Level (Facing Downstream) Figure 4-1: Deficiency #14 – 30% Water Level (Facing Downstream) Figure 4-2: Deficiency #15 – 30% Water Level (Facing Downstream) Figure 4-3: Deficiency #16 – 100% Water Level (Facing Downstream) Figure 4-4: Deficiency #17 – 20% Water Level (Facing Downstream) Figure 5-1: Deficiency #18 – 30% Water Level (Facing Upstream) Attachment A
  • 29. Figure 5-2: Deficiency #19 – 55% Water Level (Facing Upstream) Figure 5-3: Deficiency #20 – 40% Water Level (Facing Upstream) Figure 6-1: Deficiency #21 – Longitudinal Crack (Facing Downstream) Attachment A
  • 30. Attachment B Post-Construction Inclination Survey with FNI Notes Attachment A
  • 31. Inclination Survey Upstream MH No: 11.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-9 Depth: VORTEX OGDEN OGDEN Sea Level: MH-8 City: 7.0 ft. POST-12-224 Sea Level: Street: Project name: Total length: 221.9 ft. 6/2/2022 8:51 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 214.6 ft. Direction: D CUES, Inc. 3600 Rio Vista Avenue Orlando, FL 32805 Phone: 407-849-0190 Fax: 407-425-1569 Page 1 of 7 Inclination Survey Attachment A 20'-40' 30% Water Level 160'-180' 30% WL
  • 32. Inclination Survey Upstream MH No: 7.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-8 Depth: VORTEX OGDEN OGDEN Sea Level: MH-7 City: 12.0 ft. POST-12-340 Sea Level: Street: Project name: Total length: 341.9 ft. 6/2/2022 9:15 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 336.1 ft. Direction: D Page 2 of 7 Inclination Survey Attachment A 320'-330' 10% WL 180'-200' 30% WL 60'-100' 45%- WL 0'-20' 45% WL 300'-310' 30% WL
  • 33. Inclination Survey Upstream MH No: 12.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-7 Depth: VORTEX OGDEN OGDEN Sea Level: MH-6 City: 6.0 ft. POST-12-533 Sea Level: Street: Project name: Total length: 443.8 ft. 6/2/2022 9:59 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 435.8 ft. Direction: D Page 3 of 7 Inclination Survey Attachment A 70'-140' 100% WL 260'-290' 100% WL 310'-320' 45% WL 390'-410' 65% WL 30'-50' 30% WL
  • 34. Inclination Survey Upstream MH No: 6.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-6 Depth: VORTEX OGDEN OGDEN Sea Level: MH-5 City: 6.0 ft. POST-12-281 Sea Level: Street: Project name: Total length: 370.8 ft. 6/2/2022 10:55 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 362.4 ft. Direction: D Page 4 of 7 Inclination Survey Attachment A
  • 35. Inclination Survey Upstream MH No: 6.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-5 Depth: VORTEX OGDEN OGDEN Sea Level: MH-4 City: 12.0 ft. POST-12-252 Sea Level: Street: Project name: Total length: 249.4 ft. 6/2/2022 11:19 AM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 246.6 ft. Direction: D Page 5 of 7 Inclination Survey Attachment A 20'-30' 30% WL 110'-120' 30% WL 130'-170' 100% WL 190'-200' 20% WL
  • 36. Inclination Survey Upstream MH No: 12.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-4 Depth: VORTEX OGDEN OGDEN Sea Level: MH-3 City: 11.0 ft. POST-12-351 Sea Level: Street: Project name: Total length: 356.4 ft. 6/2/2022 12:29 PM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 347.8 ft. Direction: D Page 6 of 7 Inclination Survey Attachment A 260'-270' 40% WL 200'-250' 55% WL 10'-30' 30% WL
  • 37. Inclination Survey Upstream MH No: 11.0 ft. Depth: SAN ANTONIO Downstream MH No: Mainline ID: MH-3 Depth: VORTEX OGDEN OGDEN Sea Level: MH-2 City: 7.2 ft. POST-12-244 Sea Level: Street: Project name: Total length: 243.7 ft. 6/2/2022 1:16 PM Start date/time: Shape: Width: C 12 in. Material: PE Height: MARCUS Surveyed by: Weather: 1 Location code: Purpose: WARNING: One or more depth measurements are missing. Depth values are relative to the starting point. Accuracy unknown. Distance Depth Surveyed Distance: 239.3 ft. Direction: D Page 7 of 7 Inclination Survey Attachment A 200'-240' Longitudinal Crack