R2001-0042 04-26-01 RESOLUTION NO. R2001-42
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF PEARLAND,
TEXAS, APPROVING A CHANGE ORDER WITH PATE & PATE
ENTERPRISES, INC. FOR CONSTRUCTION SERVICES ASSOCIATED
WITH THE MAGNOLIA/HARKEY SANITARY SEWER IMPROVEMENT
PROJECT.
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PEARLAND, TEXAS:
Section 1. That certain change order by and between the City of Pearland and
Pate & Pate Enterprises, Inc., a copy of which is attached hereto as Exhibit "A" and made
a part hereof for all purposes, is hereby authorized and approved.
Section 2. That the City Manager or his designee is hereby authorized to execute
a change order with Pate & Pate Enterprises, Inc. for construction services associated with
the Magnolia/Harkey Sanitary Sewer Improvement Project.
PASSED, APPROVED and ADOPTED this the 26 dayof March ,
A.D., 2001.
TOM REID
MAYOR
ATTEST:
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(.~y SFt~ETARY f,/ V
APPROVED AS TO FORM:
DARRIN M. COKER
CITY ATTORNEY
CHANGE ORDER FOR
MAGNOLIA/HARKEY
SANITARY SEWER TRUNK LINE
PEARLAND, TEXAS
Date of Issuance: February 15, 2001
Date Amended: March 8, 2001
Owner: City of Pearland
Contractor: Pate & Pate Enterprises, Inc.
Engineer: Carter & Burgess, Inc.
Change Order Number:
2-AMENDED
Owner's Project Number: B00-052
Contractor's Project Number: 2786
Engineer's Project Number: 99-3064-030
Explanation of this Change Order:
This change order is being issued to authorize the following items:
1) Offset of the sewer line by 2 feet due to a utility conflict between stations 167+70 and
187+ 10.
2) Payment of additional cement stabilized sand and additional asphalt road removal and
replacement due to unsatisfactory soil conditions.
3) Additional improvements on parcel # 3 that were authorized by City staff.
4) The boring of a stub-out at Sharondale Drive due to utility conflicts.
5) Time extensions associated with the above changes.
6) Reductions in sodding quantities to only include private property and not City ROW.
A contract close out change order will be issued at a later date to adjust line item quantities to
match the final as built quantities.
1) Sewer Line Offset
A SWBT buried cable was found to be installed at the same location as the proposed sewer line.
The sewer line offset was adjusted from 8.0 feet west of the center line of the future ROW to 6.0
feet west of the center line of the future ROW between station 167+70 to station 187+10. No
change in cost or quantities is associated with this offset.
2a) Additional Cement Stabilized Sand
During the excavation for the 36" sewer line from Station 167+70 to Station 185+90, the
contractor encountered different soil conditions than were anticipated. The geotechnical report
stated that the excavation could be made vertically and shored with bracing or trench boxes.
The soil located under Harkey Road was unstable and did not support the vertical trench
through the use of a trench box. This required the contractor to over excavate and replace the
material with cement-stabilized sand (CSS).
To potentially avoid unstable soil conditions, after they were discovered, the relocation of the
sewer line to the west of the original alignment would have been required. This alignment would
have placed the sewer line closer to a water line and approximately in the center of an existing
ditch which would have lead to additional utility conflicts, the replacement of several driveways
and culverts and caused interference with the future boulevard section planned for Harkey
Road. This additional work would have resulted in additional cost and time delays for the City of
G:\1999-\99-3064.030\CONSTR ADMIN\CO2-AMENDED.DOC Magnolia / Harkey
Sanitary Sewer
Change Order No. 2 - Amended
Page 1 of 3
Pearland. Offsetting the sewer line to the west would not have guaranteed that unstable
material would be avoided. As a result, the adjusted alignment under Harkey road was
maintained.
These soil conditions resulted in 2116 cubic yards of additional CSS being installed by the
contractor. Calculations showing the bid amount of CSS and delivery tickets for the actual
installed-amount are attached. The unit cost for the removal of unsatisfactory soil and the
installation of additional CSS is set at $23.95 per cubic yard. This results in a total cost of
$50,678.20.
2b) Additional Asphalt
In addition to the poor soil conditions under the road, the base and sub-base material was
inadequate in certain places. The geotechnical report indicated a 3 inch thick asphalt pavement
with between 12 and 33 inches of base material. In several locations along Harkey Road the
base material was less than indicated, which resulted in the failure of the asphalt pavement
during construction.
The Engineer, Inspector and Contractor reviewed the condition of the road and determined the
appropriate limits of replacement. The replacement of additional asphalt is between Stations
167+18 and 187+39.
This results in an increase in asphalt restoration (line item 10) by 2,950 square yards and the
removal of 960 CY of excess asphalt and sub-grade material. The removal of asphalt and sub-
grade material shall be at a lump sum cost of $7,680.00. The replacement of the base material
and the asphalt surface shall be at the bid price of $26.70 per square yard. This results in a cost
of $78,765.00.
3) Parcel # 3 Improvements
Additional improvements were performed on Parcel 3. The 8" sanitary sewer was extended 85
LF to the east at the City of Pearland's request. This work included removing and replacing 118
LF of 18" RCP and two (2) storm water inlets. The additional length of 8" sanitary sewer will be
incorporated into the quantity adjustment change order. The removal and replacement of the
18" RCP shall be paid at a unit price of $39.50/LF. The removal and replacement of the storm
water inlet shall be paid at a unit price $200.00/EA.
4) Stub-out at Sharondale
At Sharondale Drive, existing utility conflicts made the installation of the proposed 8" sanitary
sewer stub out impractical by open-cut methods. Therefore, trench-less installation was used to
install the 35 LF of 8" sanitary sewer stub-out at Sharondale Drive for a lump sum of $2,500.00.
5) Time Extension
The contractor has requested 30 days of additional time to complete the project due to the
increased amount of excavation and backfill required and for the other additional work. These
additional 30 days shall extend the time for substantial and final completion; however, the time
for the early completion bonus expired on January 17, 2001 and shall not be extended.
G:\1999-\99-3064.030\CONSTR ADMIN\CO2-AMENDED.DOC Magnolia / Harkey
Sanitary Sewer
Change Order No. 2 - Amended
Page 2 of 3
6) Sodding Ad/ustments
The areas identified on the plans to be sodded that are located within City ROW will be
hydromulched and not sodded. Quantity adjustments will be incorporated into the quantity
adjustment change order.
Contract Amount:
Original Contract Price:
Previous Change Order(s):
Contract price prior to this change order
$1,222,504.40
$11,8OO.OO
$1,234,304.40
Net increase (decrease) from additional items in this change order
· Additional cement-stabilized sand [$23.95/CY * 2116 CY]
· Additional asphalt surface [$26.70/SY * 2950 SY]
· Additional asphalt removal [Lump Sum of $7,680.00]
· Remove and replace 18" RCP [$39.50/LF * 118 LF]
· Remove and replace storm water inlet [$200:00/EA * 2 EA]
· Add 35 LF of trench-less 8" sanitary sewer [Lump Sum]
$50,678.20
$78,765.00
$7,680.O0
$4,661.00
$4O0.00
$2,5OO.OO
Total increase (decrease) included in this change order
$144,684.20
Contract price with all change orders to date (including this change order): $1,378,988.60
Contract Time:
Original Contract Time (substantial completion/final completion):
Previous change in time:
Contract time prior to this change order:
150/180 days
4/4 days
154/184 days
Net increase (decrease) from this change order
· Additional time to complete additional work
30/30 days
30/30 days
Contract time with all change orders to date (including this change order): 184/214 days
RECOMMENDED:
By: ~"'//-z,-t...~ ~~-
Engineer
Date: ~~
ACCEPTED:
APPROVED:
¢//Contractor Owner
Date: .~/~/,~z.-/,¢/ Date:
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Sanitary Sewer
Change Order No. 2 - Amended
Page 3 of 3
Magnolia I Harkey
Extra Cement Stabilized Sand Calculations
C$S Invoices Provided by Pate & Pate
'Total Invoice # of Invoice
Date Weight (Tons) )eliveries Number
1/02/2000 19 1 6180280
1102/2000 57 3 6180281
1/09/2000 165 9 6180879
1/09/2000 19 1 6180878
1/10/2000 389 21 6181073
1/10/2000 110 6 6181074
1/11/2000 483 27 6181222
1114/2000 132 7 6181479
1/14/2000 493 29 6181480
1/1512000 362 22 6181701
1/15/2000 586 32 6181700
i 1121/2000 111 7 6182110
11/22/2000 358 21 6182337
11/22/2000 188 10 6182336
11/27/2000 435 6 6182548
11/28/2000 76 4 6182807
11/28/2000 276 17 6182808
11/29/2000 106 6 6183012
11/30/2000 18 1 6183225
11/30/2000 822 49 6183227
12/01/2000 618 38 6183455
12/02/2000 547 12 6183604
12/04/2000 160 10 6183749
12/05/2000 305 19 6183978
12/06/2000 60 4 6184149
12/07/2000 354 21 6184318
12/08/2000 435 27 6184544
12/09/2000 14 1 6184679
12111/2000 183 10 6184846
12/11/2000 501 30 6184847
12/12/2000 633 39 6185049
12/14/2000 18 1 6185223
12/15/2000 405 14 6185408
12/16/2000 325 19 6185499
12/18/2000 98 6 6185646
12/19/2000 171 10 6185855
12/20/2000 56 3 6186088
12/20/2000 204 12 6186089
01/03/2001 38 2 6187088
01/03/2001 109 6 6187089
01/04/2001 242 14 6187281
01/05/2001 349 19 6187487
01/05/2001 265 16 6187488
01/06/2001 342 20 6187632
01/08/2001 392 23 6187812
01/08/2001 202 11 6187811
01/09/2001 467 26 6188027
01/10/2001 150 8 6188205
01/12/2001 702 39 6188455
01/13/2000 430 25 6188572
01/15/2000 592 32 6188726
01/23/2001 346 19 6189270
01123/2001 53 3 6189271
01126/2001 318 28 6189979
01/27/2001 38 2 6190110
Total 15,327 848
07J15/2001 G:\1999-\99-3064.030\CONSTR ADMIN\sand,xls CSS invoices
Magnolia / Harkey
Extra Cement Stabilized Sand Calculations
-'stimated Cement Stabilized Sand (CSS) Required from Station
167+17.8 to End of Project
------'--- CSS for Manhole CSS for Line Segment
Manhole Station (Tons) Preceding MH (Tons)
i 67 + 17.8 74 : ~: ~::;~ ::i .i i~' ~.'-'~ ~'~'!~ ~"-~:' !ti :i~~-~- ~:~'i~ -, ~
167+70.8 77 276
170+82.6 77' 1,965
171+94.4 76 658
175+21.7 73 2,006
i79+02.3 69 2,248
179+62.3 69 296
182+82.0 66 1,80C
185+84.3 67 1,677
Bore Pit (20'x8'x18.3') 108
Stub Out @ 170+82.6 46
Stub Out @ 175+21.7 43_
'Stub Out @ 179+62.3 41
45
Stub Out @ 185+84.3
T_.~..~_.~~otal 648 11,209
Total CSS Installed (Contractor's Invoices)
Total CSS BID (Carter & Burgess, Inc. Calculations)
Extra CSS used
Extra CSS used (1.64 Tons / CY conversion Factor)
15,327 Tons
11,857 Tons
3,470 Tons
2,116 Cubic Yards
Sum of Estimated CSS
02/12/2001 g:\1999-\993064.030\CONSTR ADMIN\sand.xls