HomeMy WebLinkAboutC2009-193 - 5/12/2009 - ApprovedCHANGE ORDER
Department of Engineering Services
City of Corpus Christi, Texas
CHANGE ORDER NO: 1 FUNDING SOURCE: 550910-3365-00000-195005 CONTRACT TIME: 100 C.D.
Operating Department: Engineering Services DATE: May 19, 2009
Name of Project: Cefe F Valenzuela Landfill Section 4B Liner & Leachate Collection System - Project # 5240
Contractor: Longhorn Excavators. Inc.
CHANGE AS FOLLOWS: ADD DEDUCT
1. the excavation of 3,770-If of storm water intercept ditches @ $5.50/Ifl``
egSY)
640 SY @ $29
00
2
ill
k
i
4 $ 20,73~,A0
$ 76
560
00
2. .
p
,
p rap sp
ways (
) roc
r
installation of three ( .
,
3. perform ouffall repairs for installation of end wall ~,~
J $67,404.00
4. provide miscellaneous driveway repairs to KEDT compound per lease
Agreement for mounting City microwave communication antenna $ 15,804.00
5. install tall (18-ft) trash fence on north side of landfill (approx. 850-If) for
additional blowing trash control as required by TCEO Permit $ 51.643.00
Total $232,146.00
Why was this change necessary? (If left off the plans and specifications, explain why)
plans were prepared and the project bid Item 3 - Eroision undermined concrete slope protection requiring repair to
prevent further damage Items 4 & 5 self explanatory.
How can similar changes be avoided in the future? Unavoidable.
A. CONTRACT PRICE ..............................................$ 1 923.805.50
B. TOTAL CHANGE ORDER (inc. current) ...............$ 232.146.00
C. NEW CONTRACT PRICE ....................................$ 2.155,951.50
D. THIS CHANGE ORDER .......................................$ 232,146.00
E. PERCENT TOTAL CHANGE (B/A) ...................... 12.07% Project En ne (Item #5)
F. PREVIOUS ADDN'L TIME AUTHORIZED ........... 0 CD ,fin
G. ADDN'L CONTRACT TIME THIS CHANGE ORDER 30 CD `°!
H. TOTAL ADDITIONAL TIME .................................. 30 CD Project Engineer (Items #1 - 4)
CITY OF CORPJBS CHRISTI,
By:
City
APPROVED:
CONTRACTOR
By:.
Title: r~/LoJ~c,~ 4Ii1{N~iQ6GJL
'Aperating Department
Director of Management & Budget
Department
Assist. City Mngr.
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2009-193 --~
M2009-123
05/12/09
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Longhorn Excavators
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1~1J^ CITY OF CORPUS CHRISTI CEFE F. VALENZUELA
LANDFILL
Tease Eli Firm CHANNEL "B" PLAN CHANNEL "B" REPAIRS
Registration No. 754 SHT 1 of 2
- ~ _ - - VARIES NATURAL GROUND
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A SECTION -DRAINAGE SWALE
1 2 SCALE: N.T.S.
18" CONCRETE RUBBLE RIP-RAP
NATURAL GROUND
12 OZ. NON-WOVEN GEOTEXTILE
FILTER FABRIC
~ 1. CONCRETE RUBBLE CAN BE OBTAINED
18' 18~ 18' FROM CITY CONCRETE RUBBLE
STOCKPILE LOCATED ACROSS OSO
CREEK AT J.C. ELUOTT LANDFlIL.
54'
2. CONCRETE RUBBLE SHALL BE 6" - 12"
NOMINAL SIZE AND SHALL HAVE STEEL
REINFORCING PROTRUSIONS REMOVED.
e SECTION -SPILLWAY
2 2 SCALE: N.T.S.
110'
10'
B
TOE OF 2
CHANNEL
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JON M. REINHARD
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SCALE: N.T.S.
CITY OF CORPUS CHRISTI
CHANNEL "B" PLAN
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DRAINAGE
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CEFE F. VALENZUELA
LANDFILL
CHANNEL "B" REPAIRS
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DETAIL
CHIANG, PATEL & YERBY, INC.
1820 REGAL ROW, SUl7E 200
(~ ~} DALLAS, TEXAS 75235
(214) 638-0500 FAX (214) 638-3723
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SUBJECT %: w- _!-~•T~~ ~~r~_c_-L:---
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JOB NO. SHEET NO. I OF ~
BY 12~- DATE ZI 1 E/°`~'
CHKD BY DATE
BACK CHKD BY DATE
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Cefe F. Valenzuela landfill Material Ust for Sanitary Landfill Fence
Extension 2/23/09
Item No.
Quantity
Unit
kem Description Unit Price in
Figures Bid item Exension
(QTY x Unit price)
1 34 ea 25 footx8"diameter southern pine treated wood poles
2 34 ea ]7 foot x S" diameter southern pine treated wood brace poles
3 72 ea Steel Anchor eye bolts 10' x 1" diameter for brace supports
4 140 ea Steel washers with 1"diameter hole fro brace supports
5 72 ea ]" Steel nuts for eye bolt for brace supports
6 6 ea Corner Post Goss Poles minimum Diameter 6"
7 8 ea 1" Corner Post Eye Bolts and Shackles and hardware
B 35 cY 3000 psi Concrete Anchoring for Fence and Brace Posts
9 140 ea 1/2" Diameter Wire Fabric Eye Bok w/washer and nut Supports
]0 140 ea Galvanized Chanin Shackle for Wire Fabric Support
11 850 If 2" x 4"Galvanized Wire Fabric to span 18-foot height
12 2550 If 1/4" Galvanized Steel Wire
Total Price
«~ _/~, SECTION 02838
SANITARY LANDFILL FENCE
(18' high perimeter containment)
PART 1-GENERAL
I.Ol SECTION INCLUDES:
A. This specification shall govern all materials and work required to complete the trash
perimeter containment fence. All fence materials shall be hot dipped galvanized.
PART2-PRODUCTS
A. WOOD POLES shall be CCA treated to a minimum retentipgof 0.6 lbs, per cubic foot,
25' long, southern yellow pine, class 6, poles in accordance with TxDOT specification
Item 627 Treated Timber Poles.
B. WIRE FABRIC shall be 2" by 4", 14 gage, 72" wide, and galvanized.
C. ZINC-COATED (GALVANIZED) STEEL WIRE STRAND shall be in accordance with
ASTM A 475 and shall be %," 7 strand EHS grade with a minimum breaking strength of
~ 6,650 lb and with Class B coating.
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D. EYEBOLT shall be of %:" steel rod with a minimum shank length of 9.75" (or 1" lazger
than the pole diameter) and an eye diameter of 1.25". The eyebolt along with the
required bolt and washer shall be galvanized. The bolt shall restrain a 1,500 pound load.
E. WIRE ROPE CLIPS shall be galvanized steel meeting federal specification FF-C-450,
Type 1, Class I, conforming to ASTM A-] 53.
F. WIRE THIMBLE shall be galvanized steel meeting federal specification FF-T-276b,
Type 11, conforming to ASTM A-153.
G. STEEL SHACKLE shall be galvanized steel, load rated at a minimum of 2 tons, weldless
with screw pin, and shall secure the wire, the wire fabric and wire strands to the eyebolts.
H. PERFORMED GRIP shall be constructed of helically formed galvanized steel, when
applied, encircles the steel wire strand. Two types shall be required; splice grip and
terminal grip. The splice grip shall consist of a set of gripping legs at each end for
splicing which is used for splicing. The guy grip shall have one connection to the steel
strand. Load capacity of grips shall exceed wire strand capacity.
I. Contractor shall provide manufacturer submittals for all fencing materials used on this
project to demonstrate conformance with the Contract Documents.
J90168.03 02838
Page I oft
PART 3-EXECUTION
A. The lazgest end of the pole goes into the ground!
B. Poles shall be spaced at 25' centers. Embedment of poles shall be between 6.5' and 7'.
Maximum allowable horizontal tolerance from true alignment shall be 4".
C. Backfill around pole shall be cement stabilized sand mixed at a ratio of 1 sack Portland
cement per cubic yard of sand. The backfill shall be well compacted azound the pole
after proper alignment has been achieved.
D. Comer and end bracing shall be placed at all openings and comers.
E. Wire Fabric shall be spliced such that the capacity of splice ~~not less than 90% of that of
the unspliced section.
F. All sanitary landfill fence as specified above shall not be measured for payment, but shall
be subsidiary to the appropriate Bid Item for which it is required.
END OF SECTION
J
J90166.03 02838 -
Page 2 of 2
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