HomeMy WebLinkAboutCHANGE ORDER - RFP - 7515 CONSULTING ENGINEERING SERVICES FOR FUTURE WATER WW & SW FACILITIES CAPITAL IMPROVEMENTS (6)Change Order Form (for Work Orders)
Official Purchasing Form
Last updated 10/2017
CHANGE ORDER
NO. 1
PROJECT TITLE: 24 inch Poudre Pipeline Rehab Assessment
CONTRACTOR: Stantec
WORK ORDER NUMBER:
PO NUMBER: 9173507
DESCRIPTION:
1. Reason for Change:
Task 3 of our original contract did not anticipate the extent of services required due to a change in
approach to mapping the existing pipeline. Method used by Contractor, Hydro Construction, to
determine the horizontal and vertical location of the 24” pipeline from the mouth of the Canyon to
the Pre-Sedimentation Basin did not produce meaningful results sufficient for use in the design of a
liner system for rehabilitation of the 24” RCP. Another method was eventually selected and
appears to be yielding usable data; yet reduction of the data is still occurring. Due to the change in
direction regarding location of the pipe, additional effort was required.
2. Description of Change:
Additional on-site and office labor and expenses were incurred. On-site labor included
observation of the original methods by Hydro to locate the entrance and exit points for the internal
survey and coordination with our Surveyor, Coffey Engineering and Surveying, to locate these
points, and trace the alignment marked on the surface by the City’s Locator. Office services
included reduction of the data collected by the Coffey and Hydro. This included reducing the angle
measurements at each joint in the reach, determining coordinates for each joint, and adding the
alignments to the original plan & profile AutoCAD maps to locate the reach in each plane. After
reduction and plotting of the results, it became apparent the information supplied did not properly
locate the pipe and there was significant error in the horizontal alignment of the field data when
compared to the known location of the pipe. Lack of adequate data was not an option and thus an
alternate method needed to be determined to obtain the necessary data. We researched other
methods and found a company that had a method that appeared to be applicable. After further
research, phone conversations, site visit, and correspondences with the company, PURE
Technologies, we assisted them in preparing a scope for investigation of the pipeline. PURE’s
method required placement of additional survey control in the Canyon, calibration of PURE’s
equipment (i.e. GPS and optical gyroscope), collection of horizontal and vertical location of the
centerline of the 24” RCP at each appurtenance on the pipeline, and the location of additional
access points due to PURE’s inability to track the lengths originally believed possible.
After completion of the field survey by PURE, coordination was required between Coffey and
PURE to reduce the field data and analyze the resultant plots of the alignment. Information
received initially from PURE gave a good approximation of the horizontal alignment of the pipe but
vertically the data did not match the survey data obtained by Coffey. We continue to coordinate
this effort and endeavor to assure the City that the information collected correctly represents the
“real-world”. At this time, we anticipate receipt of the correct data by February and finalizing the
project report by the end of February 2018.
DocuSign Envelope ID: 6665B11E-29D3-4BD1-ACA7-585DBE2CD250
Change Order Form (for Work Orders)
Official Purchasing Form
Last updated 10/2017
3. Change in Work Order Price: $27,911.00
4. Change in Work Order Time: Two months
ORIGINAL WORK ORDER PRICE $ 166,587.00
TOTAL APPROVED CHANGE ORDER $ 0.00
TOTAL PENDING CHANGE ORDER $ 0.00
TOTAL THIS CHANGE ORDER $ 27,911.00
TOTAL % OF THIS CHANGE ORDER 16.75%
TOTAL C.O.% OF ORIGINAL WORK ORDER 16.75%
ADJUSTED WORK ORDER COST $ 194,498.00
CONTRACTOR: Stantec
By: Date:
Name: Title:
ACCEPTANCE: Date:
Brian Mulligan, Special Project Manager
REVIEWED: Date:
Pat Johnson, Senior Buyer
ACCEPTANCE: Date:
Owen Randall, Water Systems Engineering Division Manager
ACCEPTANCE: Date:
Gerry Paul, Purchasing Director
(if greater than $60,000)
DocuSign Envelope ID: 6665B11E-29D3-4BD1-ACA7-585DBE2CD250
January 8, 2018
January 8, 2018
January 8, 2018
Don Silar Senior Associate
January 11, 2018
EXHIBIT B
24" POUDRE PIPELINE REHABILITATION ASSESSMENT - 2017 ADDITIONAL DESIGN SERVICES
Labor Category or Sub-consultant Senior Assoc. Proj Mgr Proj Eng Tech Admin Surveyor Expenses TASK TOTAL TOTAL
Individual Don S. Cort Michael Corey Rhonda Coffey (8% of
Rate / hour $201 $191 $113 $122 $113 $200 direct costs)
Task 3 Field Investigation
3.2 Pipeline Location and Condition $ - $ -
- Research alternative methods to locate pipe 6 $ 96 $ 1,302
- Reduction of original data from APS 32 $ 289 $ 3,905
- Coordination with PURE Technologies 4 8 8 $ 259 $ 3,495
- On-site observation 18 $ 163 $ 2,197
- Data reduction 16 $ 145 $ 1,953
3.3 Survey 4 4 116 $ 1,950 $ 15,059 <INCLUDES ORIGINAL FEE
Subtotal: 14 8 78 0 0 116 $ 2,902 -------
Task 6: subtotal: $ 27,911
level of effort per labor category (hours): 14 8 78 0 0 116 ------- 216 <<Total Manhours
total costs per labor category, sub-consult. & expenses: $ 2,814 $ 1,528 $ 8,814 $ - $ - $ 11,853 $ 2,902 Total Costs>> $ 27,911
staff-weeks: 0.35 0.20 1.95 0.00 0.00 2.89 Total staff-weeks: 5.39
DocuSign Envelope ID: 6665B11E-29D3-4BD1-ACA7-585DBE2CD250