To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Mark Henderson, P.E., Assistant Director of Castle Rock Water
Frank N. Main, Project Manager
Title
Resolution Approving the Second Amendment to the Services Agreement Between the Town of Castle Rock and Olsson, Inc., for the East Plum Creek Reach 5 Phase II Stabilization Supplemental Design, Bidding and Construction Services Project [Located at the CR-1 Water Intake Diversion Structure]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water (CRW) staff requests Town Council approval of a Resolution (Attachment A) approving the Second Amendment to the Supplemental Design, Bidding, and Construction Support Services Agreement with Olsson, Inc. for the East Plum Creek Reach 5 Phase II Stabilization Project (Exhibit 1).
Purchase Order No. 2343 was originally authorized on September 21, 2022, in the amount of $134,610 for these services. The First Amendment increased the agreement by $97,194 to complete an Alternatives Study evaluating the feasibility of incorporating design improvements to the CR-1 Water Intake Diversion Structure into the overall project scope, and extended the agreement completion date, resulting in a revised authorization of $231,804.
The proposed Second Amendment includes:
• A contract time extension through June 1, 2027; and
• An additional budget appropriation of $60,977.50 plus a 10% contingency of $6,097.75 for a total of $67,075.25 to complete construction-related services, including preparation of an as-built survey and submission of a Letter of Map Revision (LOMR) to Federal Emergency Management Administration (FEMA).
These additional services are necessary due to construction delays, expanded permitting requirements, increased coordination with regulatory agencies, extended construction support efforts, and other project-related tasks that exceeded the original 2022 scope of services. Olsson and CORVUS have provided these services to support successful project completion and maintain regulatory compliance.
Approval of the Second Amendment will increase the total Authorization amount to $298,879.25, requiring Town Council approval in accordance with Town purchasing policies.
Budget Impact
Approval of the proposed Second Amendment will increase the total revised authorization to cost to $298,879.25, as summarized below:
• Original Agreement: $134,610.00
• Amendment No. 1: $97,194.00
• Amendment No. 2: $67,075.25 - ($60,977.50 Agreement plus $6,097.75 Town-managed 10% Contingency)
• Total Revised Authorization: $298,879.25
|
Fund |
Account Number |
Original Authorization |
Amd. 1 |
Amd. 2 |
Amd. 2 Contingency |
Revised Authorization |
|
SW-EPC Stream Stab. |
212-4475-444.76-37 |
$ 94,227.00 |
$ - |
$42,684.25 |
$4,268.42 |
$ 141,179.67 |
|
WR - CR-1 Diversion |
211-4375-443.79-16 |
$ 40,383.00 |
$97,194.00 |
$18,293.25 |
$1,829.33 |
$ 157,699.58 |
|
|
Total |
$134,610.00 |
$97,194.00 |
$60,977.50 |
$6,097.75 |
$ 298,879.25 |
Staff Recommendation
Staff recommends approval of the Second Amendment to the Supplemental Design, Bidding, and Construction Support Services Agreement with Olsson, Inc. for the East Plum Creek Reach 5 Phase II Stabilization Project in the amount of $60,977.50, together with a Town-managed 10% contingency of $6,097.75, for a total authorization increase of $67,075.25, and extending the agreement term through June 1, 2027
Proposed Motion
“I move to approve the Resolution as introduced by title.”
Alternative Motions
“I move to approve the resolution as introduced by title, with the following conditions: (list conditions).
“I move to continue this item to the Town Council meeting on _____ date to allow additional time to (list information needed).”
Attachments
Staff Report
Attachment A: Resolution
Exhibit 1: Agreement
Attachment B: Project Map