Conoco-CS 871211December 11, 1987
CERTIFIED MAIL
Receipt #P251233296
COROCO
1909 Southwood Drive
Lake Charles, LA 70605
(318) 491-5855
Mr. John Karlsruh
Ginn, Inc.
17103 Preston Road, Suite 100, Box 118
Dallas, Texas 75202
RE: DENTON TAP ROAD IMPROVEMENTS
CITY OF COPPELL, TEXAS
Dear Mr. Karlsruh:
We have received your letter and construction plans concerning improvements
to Denton Tap Road where it crosses the Conoco Inc. operated Con-Dot Pipe
Line Company ("Con-Dor") 6-inch high pressure petroleum products pipeline.
Conoco Inc. will permit construction across the pipeline upon the Contrac-
tor and City of Coppell ("City") agreeing to the following requirements:
After review with our Engineering Department, we must take exception
to your suggestion that the line will not require concrete coating.
The pipeline is currently installed inside of steel casing under
Denton Tap Road. This casing provides protection from external stress
due to traffic; it also reduces the risk of damage to the pipe during
installation of utilities, drain lines, etc. In addition, the casing
provides a means of monitoring the integrity of the pipe and provides
a conduit for pipe replacement if necessary. Extensions to the casing
is not practical due to sags in existing line and because of cathodic
protection considerations. Once the pipe is covered by the road, it
will no long be accessible for maintenance, therefore, we must require
installation of tested, heavy wall, concrete coated pipe under the
roadway.
The concrete coated pipe will be installed under the roadway and will
extend approximately 25 feet east and west of the construction
boundaries. The cost for this modification, estimated to be
$40,000.00 as shown on Exhibit A, will be borne solely by the City of
Coppell. We require 100 percent of the cost estimate be paid 60 days
prior to construction. The City will be charged for actual costs for
construction, whether higher or lower than the estimated costs.
o
Conoco Inc.'s Division Office in Lake Charles, Louisiana, must be
provided with final construction drawings for all work which will
affect the Con-Dor pipeline, including a plot plan and a profile along
the pipeline centerline showing any grade work to be done. The
current drawings do not show the extent of grade work to be done
beyond the limits of roadway. The profile should show the vertical
distance between the Con-Dor line and any proposed gradil~g. Upon
receipt of updated drawings, Conoco Inc. will revise the cost estimate
for any additional modifications if necessary.
Mr. John Karlsruh
'December 11, 1987
Page 2
10.
11.
12.
13.
All utilities which cross the Con-Dor pipeline must pass underneath by
a minimum of 12 inches. Any utilities which parallel the pipeline
will maintain a minimum separation distance of 5 feet from the util-
ities outside wall to the outside of the Con-Dor line.
The City will allow no material or equipment to be used in the
construction which would hinder or impair Con-Dor's ability to safely
maintain and operate its line.
Con-Dor retains the right to adequately mark its pipeline with perma-
nent line markers to insure public safety and the future safe opera-
tion of the line and to meet Department of Transportation Regulation.
No engineering ~works, private or industrial dwellings, deep rooted
plants, fences, other similar permanent structures will be allowed
over any portion of the pipeline.
At any point along the pipeline where the existing grade profile will
be lowered by the removal of earth, the Con-Dor line must be lowered
to a depth which provides a minimum cover of 36 inches after final
grading.
Con-Dor requires a minimum of 48 hours notice prior to any excavation,
construction, or movement of equipment across its right-of-way so that
its line can be staked to minimize the possibility of accidental
damage. Additionally, Con-Dor personnel must be on site during
exposure of the pipeline and during any work around the exposed line.
The City shall indemnify and hold Con-Dor harmless from and against
any and all claims for injuries to person or persons or for damages to
property arising directly or indirectly from work to be performed by
the City or those under contract to the City near the Con-Dor pipe-
line.
The Contractor shall indemnify and hold Con-Dor harmless from and
against any and all claims for injuries to person or persons or for
damages to property arising directly or indirectly from work to be
performed near the Con-Dot pipeline by the Contractor or its
sub-contractor.
The City shall assume all responsibility for any and all damages to
the Con-Dor operated pipeline arising directly or indirectly from work
to be performed by the City, its contractors or subcontractors.
Con-Dor shall be named as additional insured without any qualifica-
tions or restrictions by the Contractor performing work near the
Con-Dor pipeline. Contractor shall maintain in effect during work
near the Con-Dor line the following insurance coverages:
Mr. John Karlsruh
'December 11, 1987
Page 3
Public liability insurance covering all work to be performed near the
pipeline, with bodily injury limits of not less than' $100,000 as to
any one person and $300,000 as to any one accident and with property
dama§e limits of not less than $100,000 for each accident. Such
insurance shall include coverage for all liability assumed by Contrac-
tor working near the pipeline under contract with the City with limits
of liability not less than those set out above.
It shall be the City's obligation to see that each and every contrac-
tor and subcontractor employed by it carries and pays for the same
kinds and amounts of insurance as are required of the Contractor.
A certified copy of all insurance policies requested shall be received
at the Conoco Division office in Lake Charles with Con-Dor Pipe Line
Company named as the certificate holder prior to the commencement of
work.
14.
The City of Coppell shall indemnify and hold Con-Dor harmless from and
against any and all claims for damage to Denton Tap Road and associ-
ated water and drainage lines arising directly or indirectly from work
being performed by Con-Dor or its Contractors on the Con-Dot pipeline.
This indemnification shall apply to all future work.
To initiate work on the pipeline modifications to accommodate the proposed
construction, please have a copy of this letter executed by an officer of
the Contractor and the City of Coppell and return to me along with final
construction drawings and a check in the amount of the cost estimate.
Enclosed for your information are copies of
Should Know About Petroleum Pipeline Safety".
the Contractor and Project Inspector.
the API Brochure, "What You
Please pass these along to
Should you have any questions, please call me at (318) 491-5913.
Sincerely, .
Clyx~e A. Rhodes
Director-Access & Regulations
CAR/136/220:gr
Enclosures
cc: Ann Kartsotis
Jim Rau
Joe Bob Anderson
Steve Marsee
Neil Stockholm
~r. John Karlsruh
December 11, 1987
Page 4
Attest:
Attest:
ACCEPTED AND AGREED TO:
Contractor:
Company:
Signature:
Name:
Title:
Date:
Telephone:
City of Coppell:
Signature:
Name:
Title:
Date:
Telephone
_Mr. John Karlsruh
December 11, 1987
Page 5
EXHIBIT A
DENTON TAP ROAD
CONCRETE COATED PIPE INSTALLATION
COST ESTIMATE
Description
Construction Materials
Construction Contract
Engineering, Supervision and Overhead
TOTAL
Estimated Cost
$ 5,500
25,000
9,500
$40,000