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41 MEMORANDUM
TO: Clerk to the Board DATE: October 29, 2007
Wilk
FROM: Wayne Howard, Chief Senior Engineer, Public Works
COLORADO
SUBJECT: Agenda Item
Change Order No. 4 for WCR 13, 8 to 5th Street in Frederick in the amount of$19,965.00.
Enclosed are two original Change Order No. 4. Please return one signed original Change
Order as soon as it is signed.
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2007-3421
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BOARD OF COUNTY COMMISSIONERS
REVIEW/WORK SESSION REQUEST
RE: WCR 13, WCR 8 to 5th St. in Frederick Change Order No. 4—FHU
DEPARTMENT: Public Works Engineering Division DATE: October 18, 2007
PERSON REQUESTING: Wayne Howard, P.E., Chief Senior Engineer
Brief description of the problem/issue:
During the course of the final design of WCR 13,the following issues developed that were not foreseen or included in the
original scope of work with FHU. Total cost increase for Change Order No. 4 will be $19,965.00. See attachments for
detailed documentation supporting the following items.
Drainage Modifications—In order to reduce construction cost FHU was requested to revise the drainage between 2"d
and SH 52 in along the existing WCR 13 in Dacono. The resulting design changes will save approximately $10,398
in construction cost and approximately$100,000 in utility companies' relocation expenses.
Driveway Modifications—FHU was ordered to review several driveways designs to reduce steep driveway.
CDOT's Requested Plan Changes — Revisions to asphalt shoulder width resulted in savings of $136,266 in
construction costs.
Provide Professional Environmental Services — Federal and State laws require the inspection of building to be
demolish for hazardous material and the monitoring the site during asbestos abatement operations—FHU was ordered
to provide these services.
What options exist for the Board? (Include consequences, impacts, costs, etc. of options)
The Board can either accept or not accept Change Order No.4 for the additional design services.
Recommendation to the Board:
I recommend approval of Change Order No. 4 as these services will save approximately $146,664 in construction and
$100,000 in utility relocation costs.
Approve Schedule
Recommendation Work Session Comments
David E. Long V
William H.Jerke
William F. Garcia l0�
Robert D. Masden b�
Douglas Rademacher
Attachments C.O.No. 4 and Supporting Documentation
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testing\10-12-07 BOCC request review-work session.doc
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CHANGE ORDER NO.4
Weld County Road 13, 8 to 5`"Street
Date: October 5,2007
Project: Weld County Road 13, 8 to 5'h St. The project is located between WCR 8 and 51h Street in Frederick and
is funded with Energy Impact Funds, Congestion Relief, and Strategic Road Funds. The engineering consulting firm
Felsberg,Holt and Ulliveg(FHU) was selected as the consultant for the project to provide engineering design services.
The original contract include a paragraph authorizing the addition of Other Services at a later date. This Change Order
is written to add Professional Environmental Services, Pre-demolition Hazardous Material Surveys,
Residence at 5543 WCR 13, Dacono, Colorado. This service is necessary to meet Federal and State laws
addressing the deposal of hazardous materials.
Owner: Weld County, Colorado
Consultant: Felsberg,Holt and Ulliveg, 6300 South Syracuse Way, Suite 600,Centennial, CO 80111
The following change is hereby made to the Contract Documents:
o Additional services to the original Scope of Work were required. Additional services included:
Drainage Modifications to reduce rip-rap, excavation and Right-
of-way acquisition costs. $5,130.00
Driveway modifications to reduce impacts to property owners. $4,725.00
CDOT's requested changes to SH 52/WCR 13 intersection plans. $5,110.00
Provide Professional Environmental Services, Hazardous $5,000.00
Material Survey and Air Monitoring Clearance Sampling,
Residence at 5543 WCR 13, Dacono, Colorado (Frank
Elliott's Property)
Total Increase Cost $19,965.00
CHANGE TO CONTRACT PRICE:
Original Contract Price: $ 459,928.05
Current Contract Price adjusted by previous Change Order: $ 629,802.88
The Contract Price due to this Change Order will be increased by: $19,695.00
The new Contract Price, including this Change Order, will be$ 649,767.88
CHANGE TO CONTRACT TIME:
o Additional time to the original Scope of Services were required. Additional time:
Added Days
0
Total number of Days Added 0
The Contract time will be increased by 0 calendar days.
aco 35'a
RECOMMENDED:
Owner Representative: Date: NOV 0 j 2007
David Long,Chair //
Engineer: Date: /v//0
APPROVALS: //
Consultant: Felsberg, Holt and Ulliveg(FHU)
By: Date: 10/8/0")
Title:
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material testing\I0-0?-07 C.O.#4 added ser icec.doc
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CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
(Weld County Road 8 to 5th Street)
In the course of developing the final advertisement package for Weld County Road 13, FHU was asked to
assist with design refinement and plan modifications. These modifications were requested to further
enhance the design, better avoid conflicts, and potentially reduce cost. These modifications were
requested after the more formal plan review opportunities established in our contract at the FIR/FOR and
coordination meeting stages. While we agree these edits provide value either to the County or third
parties, we are convinced that the previous design was sound and consistent with our scope with the
County. This work was therefore beyond the scope of our original agreement and worthy of budget
amendment consideration. This proposal details the work performed and offers a justification for a budget
amendment. The additional services and/or efforts required are associated with the following:
✓ Drainage Modifications
✓ Driveway Modifications
✓ Address CDOT Comments
✓ Provide Professional Environmental Services
The following scope of work identifies the completed additional services in greater detail. This scope of
work was completed by Felsburg Holt & Ullevig.
1. Drainage Modifications
A. The original design reflected roadside ditches along the east side of Colorado Boulevard
as well as along the west side of what is now called Railroad Avenue. These collective
ditches were provided in an attempt at segregating local (Dacono) flows from Weld
County flows while leaving developable parcels between the two. As the County
proceeded with negotiations with utility companies, it became evident that the ditch along
Railroad Avenue was conflicting with numerous utilities and, while not impacting Weld
County directly, would be a cost to these utility companies and would require time to
relocate.
On June 25, 2007, the County requested that FHU reevaluate the need for both these
ditch improvements and consider rerouting of the Railroad Avenue ditch to the Colorado
Boulevard ditch. This proved to be viable and the County gave FHU direction to go ahead
and implement this revision into the plans. This direction required FHU to redo the
grading, erosion control and drainage design between the proposed Colorado Boulevard
and Railroad Avenue as well as required updating the plans, cross sections and
quantities for this area as well.
B. On August 1, 2007, the County requested that the riprap be removed on all the upstream
storm sewer pipe locations. This request involved modifications to the drainage design
and plans, the erosion control design and plans, the tabulations for storm sewer and
erosion control as well as modifications to the storm sewer pipe profiles.
C. The effort required for this task is as follows:
• Associate—5 hours at$140/hour= $700 (Ed Lind)
• Engineer II —34 hours at $85/hour= $2,890 (Chad Twiss)
Designer II —22 hours at$70/hour= $1,540 (Technician)
Total for this task=$5,130
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• CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
II. Driveway Modifications
A. After a "Pre-Advertisement" plan set was submitted to the County for final review and
approval, the County requested with comments received on August 1, 2007 that several
driveways be modified in order to flatten their approach to WCR 13. This request required
the following tasks to be completed:
Modified seven driveway profiles on the driveway plan sheets,
1. Driveway Access at Station 136+25.35
2. Field Access at Station 143+37.78
3. Driveway Access at Station 182+42.56
4. Driveway Access at Station 197+13.00
5. Driveway Access at Station 220+29.25
6. Driveway Access at Station 230+34.67
7. Driveway Access at Station 248+34.06
• Evaluated the possibility of modifying the cross slope of WCR 13 at WCR 12 in
order to better fit the existing WCR 12 east of WCR 13.
• Adjusted the proposed contour grading around the driveways and WCR 13,
• Adjusted the driveway culverts, as necessary,
• Adjusted the tabulation of earthwork,
Adjusted the tabulation of drainage facilities, and
Adjusted the Summary of Approximate Quantities, as necessary.
B. The comments were addressed and "Advertisement" plan sets were submitted to the
County on August 8, 2007.
C. The effort required for this task is as follows:
9a Senior Engineer—2 hours at$130/hour= $260 (Jeff Dankenbring)
4➢ Engineer II — 15 hours at$85/hour= $1,275 (Chad Twiss)
�s Designer IV—26 hours at$85/hour= $2,210 (Shawn Twiss)
• Designer II — 14 hours at$70/hour= $980 (Technician)
Total for this task= $4,725
III. SH 52 and WCR 13 Intersection Comments
A. The additional tasks and work associated with the intersection project involves
addressing a multitude of comments on numerous occasions. The multiple iterations
were not included in the original or revised scope of work, and the timelines for this last
effort are detailed below.
• A "Pre-Advertisement" plan set and specials were submitted to the County on
April 24, 2007 for final review and approval.
• Comments were received from the County on this plan set and specials at a
meeting conducted between FHU and County staff on May 2, 2007.
Comments that were addressed include:
1. Revising the shoulder width on State Highway 52.
2. Updated the proposed grading along with ditches and erosion control
measures.
3. Added removal of barrier and tabulated to the plans.
4. Modified the construction phasing plans.
5. Provided additional detail to the construction traffic control plans.
6. Providing layouts for the highway signs.
7. Provided coordinates for the proposed and temporary traffic signals.
IPFELSBURG
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CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
8. Calculated the clearances for the proposed traffic signals and
determined the anticipated caisson elevation for the traffic signal poles.
The comments were incorporated into the plan set and specials and were
submitted to the County for advertisement on May 16, 2007.
• Additional comments were received from the County on this plan set and
specials on May 18, 2007.
1. Evaluated the possibility of deleting the ditch adjacent to the east side of
WCR 13 north of SH 52 that conflicts with existing WCWD water line.
2. Addressed additional construction phasing and traffic control comments.
• The comments were incorporated into the plan set and specials and were
submitted to the County for advertisement on May 23, 2007.
• Additional comments were received from CDOT on this plan set and specials on
June 20, 2007. The following comments were addressed:
1. Sheet 1 - Design Data should match that shown on plan sheets
2. Sheet 2 - Check M-100-1
3. Sheet 3 -Add the following note:
SEVERTY OF POTENTIAL EXPOSURE WHALL BE CLASS 1 FOR
THIS PROJECT THE CONTRACTOR MAY AT HIS EXPENSE HAVE A
CERTIFIED LABORATORY TEST THE SUBGRADE AND/OR WATER
AS PER THE FIELD MATERIALS MANUAL. TESTING SHALL BE AT
THE SAME SCHEDULE AND FREQUENCY AS REQUIRED FOR A
PRELIMINARY SOIL SURVEY. THE CONTRACTOR MAY PROPOSE
A DIFFERENT CLASS OF EXPOSURE FOR THE PROJECT BASED
ON THOSE TEST RESULTS.
4. Sheet 6-Add item 612 DELINEATOR (TYPE III)8 each and add them to
tab on Sheet 75. These delineators are to be placed at ends of all cross
culvert pipes.
5. Change qty of TELEMETRY (FIELD) to 1 and on Sheet 71 - add note
Tab of Traffic Signal Items in comments"4 CAMERAS REQUIRED"
6. Item 614 STEEL SIGN SUPPOT (2-1/2 INCH ROUND SCH 80)(POST
SLIP BASE) should be revised to change the unit to feet. The lengths of
the sign posts should be shown in the signing tabulation.
7. Item 630 FLAGGING — the quantity should be 100, the tab of
construction traffic control is 700.
8. Item 2" PVC SLEEVE (IRRIGATION) shift the quantity to the plan
column.
9. Sheet 8—Add the following note:
Longitudinal Pavement Surface Smoothness. The finished longitudinal
surface elevation of pavement will be measured using a 10 foot
straightedge. The requirements of Section 105.07(a) shall apply.
10. Sheets 10 and 11 — The stationing breaks for the typical sections should
be continuous and not broken.
11. Sheet 22 — Do not show the curve information for the Town of
Frederick's project or mark the curves that are outside our project limits
as"For Information Only."
12. Sheet 35 — Delete or adjust the proposed ROW arrow that is located in
the middle left of the sheet.
13. Sheets 40 to 45 - Show all culvert crossings, on the plan view and
flowline on profile view.
14. Sheet 40 — Show the radius on Colo. Blvd.; show the extension and cut
off culvert 514+xx.
15. Sheet 58 — Change the note for the Stabilized Construction Entrance
from 2 entrances to 1.
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• CHANGE ORDER REQUEST for
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16. Sheets 63 and 65 — Show the treatment of the shortened culvert on the
south end at Sta 514+xx.
17. Sheet 68 — Show the proposed coordinates of the temporary signal
poles.
18. Sheet 71 — Change the quantity of the Telemetry along with the
associated note.
19. Add a bid item for Wiring and a force account for Furnish and Install
Electrical Service.
20. Sheet 74 - Note 4 indicates there are "EXACT LENGTHS" but none are
shown in tab.
21. Note 6 requires Type Ill delineators at ends of culverts but there is no
pay items or quantities shown in the plans.
22. Sheet 75 — Add Type III delineators to the tab and note: Removal of
existing delineators is included in cost of delineators.
23. Sheet 77 —Sign number 35 "SADDLEBACK GOLF COURSE" should be
reset and not removed and discarded.
24. Sheet 84 — Add "FINES DOUBLED" series of signs and "FLAGMAN
AHEAD"
» The comments were incorporated into the plan set and specials and were
submitted to the County for advertisement on July 10, 2007.
B. The effort required for this task is as follows:
• Senior Engineer—7 hours at$130/hour =$910 (Jeff Dankenbring)
• Senior Engineer—4 hours at $130/hour = $520 (Rich Follmer)
• Engineer II —5 hours at$85/hour= $425 (Chad Twiss)
▪ Designer IV—35 hours at $85/hour= $2,975 (Shawn Twiss)
▪ Designer II—4 hours at$70/hour = $280 (Technician)
Total for this task=$5,110
IV. Provide Professional Environmental Services
A. Kumar & Associates will conduct a Hazardous Material Survey and Asbestos-Containing
Building Material Assessment as directed by the County for the existing residence
located at 5543 WCR 13, Dacono, Colorado (Frank Elliott's property).
ASBESTOS-CONTAINING BUILDING MATERIAL SURVEY
The scope of work for the asbestos survey will be conducted in general
accordance with the requirements of the Asbestos Hazard Emergency Response
Act (AHERA). The scope of services to be covered includes identification and
sampling of all suspect asbestos containing building materials for laboratory
analysis of asbestos content. The asbestos survey will include a minimum
number of samples of each suspect asbestos-containing material. Materials
sampled shall include (but not be limited to): floor and ceiling tile (each distinct
type), wall system and wall texture materials, vinyl sheet coverings (floor and
wall), stair treads and riser materials, interior stucco materials, and piping
insulation.
Based on Kumar's experience and knowledge of regulatory requirements the
following tasks will be performed:
1. Conduct a site visit to observe the buildings for materials that might
contain asbestos and collect representative samples of suspect
asbestos-containing materials (ACM). Location(s) and approximate
or FELSBURG
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- CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
square or linear footage of the suspect materials will be recorded, and
the condition of the suspect ACM will be assessed.
2. Submit samples of suspected ACM, which would be rendered friable
during demolition for laboratory analysis of possible asbestos content by
polarized light microscopy (PLM). Depending on the results, some
samples may be recommended for additional analysis using the point-
count method. Additional analyses by the point-count method are not
included in the basic survey cost.
ACM Survey Limitations: Kumar will not be able to represent that the site
contains no ACM beyond that detected or observed during the survey. It is
possible that some ACM may not be discovered during the surveys for several
reasons. First, if the ACM is located in inaccessible areas, such as inside a wall
or structural member, it may not be observed. Second, the sampling effort is
limited and may not have been statistically sufficient to minimize the possibility of
a false negative result.
LEAD-BASED PAINT SURVEY
Lead-Based Paint Survey: The lead-based paint survey will be conducted in
general accordance with the guidelines presented in the US Environmental
Protection Agency Model Training Course for Lead Inspection. The lead-based
paint (LBP) survey will include a sample analysis of each painted and varnished
surface with a distinct painting history. The scope of work for the LBP will include
the following tasks:
1. Test representative samples of paint from the painted and varnished
surfaces with a distinct painting history on both the interior and exterior of
the buildings using a Radiation Monitoring Device (RMD) to detect the
presence of lead based paint.
2. Prepare a LBP survey report that will include the following:
a. A brief review of the affecting regulations and the identification of
the controlling agencies.
b. The number of positive tests taken and their locations. NOTE: a
'positive' sample will be that material which contains, per the
Occupational Safety and Health Administration (OSHA), a
detectable concentration of lead.
c. The location, general condition and lead content of all test
surfaces and the surfaces containing LBP.
d. Summary of abatement and disposal options.
LBP Survey Limitations: Kumar will not be able to represent that the site
structures contain no LBP beyond that detected or observed during the surveys.
It is possible that some LBP may not be discovered during the survey for several
reasons. First, if the LBP is located in inaccessible areas, it may not be observed.
Second, the sampling effort is limited and may not have been statistically
sufficient to minimize the possibility of a false negative result.
POLYCHLORINATED BIPHENYLS AND MERCURY SURVEY
Polychlorinated Biphenyls (PCB) and Mercury Equipment: A visual inspection of
the buildings equipment will be performed to assess the presence of PCB
containing equipment and mercury/mercury vapor containing equipment. All
estimated quantities and location of any of these hazardous materials will be
noted.
PCB & Mercury Limitations: Kumar will not be able to represent that the site
structures contain no PCB and mercury containing equipment beyond that
FELSBURG
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• CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
detected or observed during the surveys. It is possible that some PCB and
mercury containing equipment may not be discovered during the survey for if the
PCB and mercury containing equipment are located in inaccessible areas.
REPORTING
A final report will be prepared for the subject buildings and will include a brief
review of the affecting regulations and the identification of the controlling
agencies, the number of samples taken, their locations and the number of
positive samples; the location, general condition and approximate quantity of
asbestos containing material, the quantity and condition of lead-based paint, and
if applicable, the quantity and locations of PCB and mercury vapor equipment or
any other hazardous materials. Budgetary hazardous material abatement costs
will also be developed. Laboratory data results of sampling will be provided.
Kumar will sign off on all demolition permits after abatement of any asbestos that
would be rendered friable during demolition or other hazardous materials.
ASBESTOS-CONTAINING BUILDING MATERIAL ASSESSMENT
The scope of work for the asbestos assessment will be conducted in general
accordance with the requirements of the Asbestos Hazard Emergency Response
Act(AHERA) and the Colorado Air Quality Control Commission Regulation No. 8.
The scope of services to be covered includes final clearance sampling in the
abetment area located in the coal room.
Based on Kumar's experience and knowledge of this site and the work conduced
there, the following tasks will be performed by a Colorado-certified Air Monitoring
Specialist (AMS):
1. Perform a visual inspection inside the containment area. Direct
abatement staff as needed.
2. Submit five (5) Phase Contrast Microscopy (PCM) final air samples to a
qualified laboratory for analyses.
3. Prepare a letter summarizing asbestos air monitoring findings. The letter
will include the sample locations and laboratory analyses.
4. Revisit the site after abatement to confirm that ACM had been removed
and sign off the demolition permit.
B. The effort required for this task is as follows:
• Kumar&Associates = $5,000
Total for this task=$5,000
FELSBURG
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CHANGE ORDER REQUEST for
WELD COUNTY ROAD 13
Overall
Task 1
Drainage Modifications $5,130
Task 2
Driveway Modifications $4,725
Task 3
SH 52 and WCR 13 Intersection Comments $5,110
Task 4
Provide Professional Environmental Services $5,000
Total Amount Requested= $19,965
PFELSBURG
(MOLT & Page ULLEVIG 9
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