HomeMy WebLinkAbout1985-06-04; City Council; 7729-2; Central Business storm drainClP""-I)F CARLSBAD - AOEND/"MLL
CENTRAL BUSINESS STORM DRAIN
CONTRACT NO. 3085
EPT. I ENG CHANGE ORDER NO. 1
RECOMMENDED ACTION:
Adopt Resolution No. f&+& approving Change Order No. 1.
ITEM EXPLANATION
When the Central Business Storm Drain was designed, it was
planned to relocate a portion of the Vista-Carlsbad trunk sewer
that conflicted with the storm drain. Originally Vista Sanita-
tion District concurred and then they would not allow the
relocation. This required the storm drain to be raised to
avoid the sewer.
The section of pipe in the alley from Elm Avenue to Grand
Avenue is now so close to the surface that a reinforced slab is
required over the pipe to carry trucks and buses that might use
the alley. This requires a change order and will cost
$19,275.00. Three minor changes involving drainage revisions
have been included in this change order for convenience
bringing the total to $20,315.00.
FISCAL IMPACT
In the 1983-84 Capital Improvement Program, $800,000.00 was
appropriated for this project. Approximately $30,000.00
remains unencumbered in Account No. 881-820-3410-3085 so that
funds are available for this change order.
Because the area where the storm drain is being placed is old
and congested with numerous existing underground utilities,
more change orders will be required. These will be brought to
Council for approval -- along with a request for an additional
appropriation -- as soon as the details and exact costs are
determined.
EXHIBITS
1. Change Order No. 1.
2. Resolution No. Jddd approving Change Order No. 1.
CITY OF CARLSBAD
PUBLIC WORKS PROJECT CHANGE ORDER
CHANGE ORDER NO. 1 DATE May 8, 1985
CONTRACT NO. 3085 PURCHASE ORDER NO. 12601 BUDGET NO. 30-18-30-3085
CONTRACTOR'S NAME Peter C. David Company
PROJECT NAME AND NO. Central Business Storm Drain
REASON/PURPOSE FOR CHANGE:
a.
b.
C.
d.
Provide H-20 truck load carrying capacity to very shallow
piping system.
Reconnect existing drain line serving the fountain at
Grand Avenue and State Street. This drain line is not
shown on the contract plans and it is not reasonable to expect the Contractor to anticipate its existence.
Provide H-20 truck load carrying capacity to very shallow
junction chamber.
Replace existing service to private property westerly of State Street. Existing 6-inch diameter drain line is not
shown on contract drawings and it is not reasonable to
expect that Contractor should anticipate private drain line
at that location.
DESCRIPTION:
a.
b.
C.
d.
Construct 9-inch thick reinforced concrete slab over parallel 48-inch RCP storm drains between station 28+80 and upper
limits of pipeline contract. Protecting slab shall be in accordance with Change Order Sketch 1-1, Sheet 10-10 dated April 10, 1985, attached hereto.
Connect 4-inch diameter PVC drain line to 66-inch RCP at approximate station 25+45 by core drilling 4+-inch diameter hole in 66-inch RCP, inserting 4-inch PVC pipe and apply 3-inch minimum Class D cement mortar all around joint.
Construct junction chamber station 30+60 per Drawing D-9
except that top slab shall include #5 bars, each way in
bottom of slab. Maintain 2-inch cover in reinforcement
steel.
Extend to new swale westerly of new proposed fence location
6-inch PVC drain pipe serving Mission Electric Supply, Inc.,
near station 15+00. Drain extension shall be less than
20 lineal feet.
CHANGE IN CONTRACT PRICE:
a. Add $19,275.00
b. Add 340.00
c. Add 60.00
d. Add 640.00
CHANGE IN CONTRACT TIME:
a. Add 5 working days
b. Add 1 working day
c. No change
d. Add 1 working day
TOTAL $20,315.00 TOTAL Add 7 working days
CONTRAGTOR :
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RESOLUTION NO. 8046
A RESOLUTION OF THE CITY COUNCIL OF THE
CITY OF CARLSBAD, CALIFORNIA, APPROVING
CHANGE ORDER NO. 1 TO CONTRACT NO. 3085
CENTRAL BUSINESS STORM DRAIN. -
BE IT RESOLVED by the City Council of the City of
Carlsbad, California, as follows:
1. That Change Order No. 1 to Contract No. 3085 adding
$20,315.00 to the contract with Peter C. David Company is
hereby approved.
2. That funds are available in Account No. 881-820-
3410-3085.
PASSED, APPROVED AND ADOPTED at a regular meeting of the
Carlsbad City Council held on the 4th day of June 9
1985 by the following vote, to wit:
AYES: Council bknbers Casler, Lewis, Kulchin, Chick and Pettine
NOES: None
ABSENT: No-
ATTEST:
ALETHA L. RAUTENKRANZ, City derk
(SEAL)
MARY H.I/ CASLER, Mayor