HomeMy WebLinkAboutbocc.con.amended.063.26 A-12025.05.08 CDD
Contract Number
Project Name
Contractor
Budget Line Item 11836360.531000.10032 !#BUDGET# $ 23,478.84
$ -
$ -
$ -
$ 23,478.84
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Retainage
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Project Lead:Liza Mitchell Phone:(970) 429-2796
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Contract Value Summary:
$ 23,478.84
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$ 23,478.84
063.26 A-1
Pitkin County
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Contract Information
No
North Star Fen Vegetation and Hydrology Monitoring
Peak Ecological Services, LLC
Additional Budget Line
Item(s)
(Please fully allocate Contract Total if multiple lines
apply)
Sole Source
Services/Maintenance
4/9/2026
5/31/2027
Task Order
Open Space & Trails
Task Order to provide vegetation and hydrology monitoring services for the North Star Nature Preserve.
Original Contract Amount
Previous Change Order/Amendment Amount
This Change order/Amendment amount
Contract Total
Master Service Agreement #: 063.26 Rev: 2018-10-10 btf
1
TASK ORDER
Task Order/Project Name: North Star Fen Vegetation and Hydrology Monitoring
Task Order Number: 063.26 A-1
Task Order Budget Line Item: 11836360.531000.10032
OWNER: CONTRACTOR:
Pitkin County Peak Ecological Services, LLC
Liza Mitchell – Open Space and Trails Rea Orthner
531 E Main St PO Box 827, 301 Boulder Canyon Drive
Aspen, CO 81611 Nederland, CO 80466
Phone: (970) 920-5355 Phone: (303) 258-3556
liza.mitchell@pitkincounty.com rea@peakecological.com
PROJECT NAME: NORTH STAR FEN VEGETATION AND HYDROLOGY MONITORING
START DATE: April 9, 2026
END DATE: May 31, 2027
The On-Call Ecological Services (the “Agreement”) dated March 16, 2026 between the Board of County
Commissioners of Pitkin County (the “County”) and Peak Ecological Services, LLC PO Box 827, 301
Boulder Canyon Drive Nederland, CO 80466 (the “Contractor”), shall include the following services.
1. Contractor’s Obligations. Contractor shall complete the services described in the attached Proposal
(“Attachment A”) for the North Star Nature Preserve. The services will be performed according to the
timeline and Project Budget in Attachment A.
2. Compensation and Expenses, Invoicing, Payment and Offset. The County shall compensate
Contractor for its services in accordance with the Project Budget and Schedule set out in Paragraph 1
of this Task Order. It is expressly understood and agreed that in no event will the total compensation
and reimbursement to be paid hereunder exceed the sum of Twenty Three Thousand Four Hundred
Seventy Eight dollars and Eighty Four cents ($23,478.84) for all services rendered. By Task Order or
Task Order Amendment, the County and Contractor may reallocate the budget among project tasks if
the total budget amount remains unchanged. Contractor shall invoice for the project monthly based
on hours worked, with payment expected within thirty (30) days of invoice, but any payment by the
County may be offset by any amount the Contractor owes the County for any reason.
Any invoices not sent in the following manner may have payment delayed. All invoices for this Task
Order shall reference Task Order 063.26 A-1 and North Star Fen Vegetation and Hydrology Monitoring.
Invoices shall be sent electronically in PDF format to kim.arensdorf@pitkincounty.com.
Master Service Agreement #: 063.26 Rev: 2018-10-10 btf
2
3. Pitkin County’s Obligations. Pitkin County shall administer this contract through a County
Representative. Liza Mitchell, Natural Resource Planner & Ecologist will manage the project as the
County’s Representative. The services provided and products delivered by the Contractor under this
contract will be subject to review by the County’s Representatives, or a designee, for compliance with
Contractor’s obligations prior to final payment.
4. Formation of Task Order. This Task Order is issued in accordance with the provisions of the
Agreement. Contractor agrees to provide services subject to the terms of this Task Order and for the
avoidance of doubt this Task Order consists of the terms set out in the Agreement. In all other respects
the Agreement is in full force and effect and remains unchanged by this Task Order.
PEAK ECOLOGICAL SERVICES, LLC
________________________________________________
!#VENDOR SIGNATURE#! Date
PITKIN COUNTY, COLORADO
________________________________________________
!#DEPARTMENT REPRESENTATIVE#!Date
Pitkin County Open Space & Trails Natural Resource Manager
Liza Mitchell
Apr-09-2026
Principal Ecologist/Botanist
Rea Orthner
Apr-09-2026
A-67 North Star Fen Vegetation and Hydrology Monitoring Page 1
PROPOSAL
PITKIN COUNTY ON CALL ECOLOGICAL SERVICES
CONTRACT #008.2019
A-67 North Star Fen Vegetation and Hydrology Monitoring
1.0 SUMMARY
Fens are ecologically important wetland resources that are colloquially known as “old-growth” wetlands.
The main aim of this study is to provide “hard” quantitative post-construction data on the vegetation and
hydrology of the fen at North Star Nature Preserve to determine if the fen “plug” has met objectives. In
addition, the 2026 North Star Nature Preserve Management Plan Goal 9 is to Preserve wetlands to ensure
the provision of ecosystem services and habitat for diverse flora and fauna, and specifically monitor the fen
wetland restoration area as well as the extent of soil saturation and native vegetation (Goal 9.2). This data
will track indicators as part of the monitoring program put forth in the Management Plan, specifically the
saturated extent of the fen, but also the extent of invasive species infestations and the condition of wetland
vegetation.
2.0 BASIS OF NEED
In late summer of 2020, a drainage ditch draining the fen at North Star was constructed. This plug has raised
water levels in the fen. In 2022, the first post-construction monitoring effort was conducted in order to
satisfy requirements of the U.S. Army Corps of Engineers permit issued for this project and found that there
was a slight decline in the cover of reed canarygrass (Phalaris arundinacea), a non-native invasive grass, and
an increase in the wetland hydrology of the fen compared to pre-restoration conditions. The 2026 growing
season represents the six-year post-construction. Furthermore, it is of interest to OST to see how the fen
performs during the summer after an extremely dry winter (2025-26) to better understand its function under
extreme drought conditions.
3.0 APPROACH
Task 1. Soil Saturation Monitoring. Environmental/soil scientist, Ryan Sparhawk, will monitor the
approximate extent of soil saturation in the fen during peak runoff (mid-late May), during the height of the
growing season (mid-July), and near the end of the growing season (mid to late August). Mr. Sparhawk will
emulate the same procedures as used previously by David Buscher (who is no longer available to complete
the work). The extent of the saturation will be delineated with a shovel/hand auger and the boundary of the
extent will be GPS’d with a sub-meter accurate GPS. Post field, the maximum saturation extent will be
digitized in GIS by interpolating between locations where saturation was observed. The final shapefile of soil
saturation will be provided to PeakEco for incorporation into the final report.
Task 2. Vegetation Monitoring. Task 2 would follow a previously established protocol for vegetation
monitoring. More specifically, Rea Orthner and a field assistant would monitor the vegetation of the four
previously established 50-meter long permanent vegetation transects within the fen to quantify the percent
cover of reed canarygrass versus native sedges. In addition, PeakEco will also qualitatively monitor the
vegetation of the fen plug to evaluate restoration success as described above. The work will be completed
using the point-intercept methodology, which is an OST standardized method to collect vegetative cover. In
addition, species richness will be collected by recording all species present within a 2-meter wide quadrat
Attachment A
A-67 North Star Fen Vegetation and Hydrology Monitoring Page 2
set up over the transect. We propose to sample the vegetation in mid to late-August, at the approximate
same time as the pre-construction baseline monitoring and 2-year post-construction monitoring.
Task 3. Reporting. A concise Monitoring Report will be prepared at the end of the 2026 growing season that
will summarize the methods of data collection and the results of the quantitative vegetation monitoring and
compare it to the baseline/pre-construction and 2-year post construction data. Excel spreadsheets,
photopoints, and maps will also be provided so that the same transects can be relocated and monitored in
future years. The report will also document the results of the soil saturation monitoring including maps that
illustrate the extent of the ponding of surface water, groundwater depth, and top of capillary fringe for each
monitoring period and compare it to pre-construction data and 2-year post-construction data. Finally, we
will briefly document the status of the fen plug, the success of the seedings and plantings and note any
changes from the original plan. Climate data will also be included so as to interpret results in light of
snowpack the preceding winter of each visit.
4.0 EXPECTED RESULTS, DELIVERABLES & COLLABORATION
As per Task 3, above a concise monitoring report will be written the winter following the field season.
Supporting files (e.g. data sheets, shapefiles, photos) will also be submitted to OST and uploaded to the OST
Data Portal.
5.0 TIMELINE
Field work would occur during the growing season and reporting the following winter.
6.0 REFERENCES
Lotic Hydrological, LLC., Buscher Soil & Environmental, Inc., Peak Ecological Services, LLC and DHM Design,
Inc. December 2018. North Star Nature Preserve Fen Hydrology Restoration Plan.
Peak Ecological Services LLC. 2023. Fen Vegetation & Hydrology Monitoring Report. Post-Restoration Year
2022. Prepared for Pitkin County Open Space and Trails.
7.0 BUDGET
See attached spreadsheet.
Attachment A
A-67 NSNP Fen Hydrology & Vegetation Monitoring
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2026 Rate 183.73$ 101.37$ 158.39$ 0.73$ 0.73$ 250.00$ 50.00$ GRAND TOTAL
Task 1. Soil Saturation Monitoring, Data Prep/Download 40 270
Subtotal $0.00 $0.00 $6,335.60 $0.00 $195.75 $0.00 $0.00 $6,531.35
Task 2. Fen Veg Transect Monitoring / Data Prep 20 16 400 2 2
Subtotal $3,674.60 $1,621.92 $0.00 $290.00 $0.00 $500.00 $100.00 $6,186.52
Task 3. Reporting 40 4 8
Subtotal $7,349.20 $405.48 $1,267.12 $0.00 $0.00 $0.00 $0.00 $9,021.80
Total $11,023.80 $2,027.40 $7,602.72 $290.00 $195.75 $500.00 $100.00 $21,739.67
8% Admin Fee $1,739.17
GRAND TOTAL $23,478.84
Soil Saturation Monitoirng would be conducted on three seperate field visit dates.
Attachment A
Certificate Of Completion
Envelope Id: 32D68C70-4901-8C56-804C-DF84B8BFF02B Status: Completed
Subject: Peak Ecological Services | Pitkin County Task Order 063.26 A-1 for Review & Signature
Source Envelope:
Document Pages: 6 Signatures: 2 Envelope Originator:
Certificate Pages: 5 Initials: 1 Pitkin County Procurement
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Time Zone: (UTC-07:00) Mountain Time (US & Canada)
530 East Main Street
Suite 203
Aspen, CO 81611
Procurement@PitkinCounty.com
IP Address: 65.38.144.66
Record Tracking
Status: Original
4/9/2026 1:51:50 PM
Holder: Pitkin County Procurement
Procurement@PitkinCounty.com
Location: DocuSign
Signer Events Signature Timestamp
Connie Baker
connie.baker@pitkincounty.com
Budget Director
Pitkin County
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Liza Mitchell
liza.mitchell@pitkincounty.com
Pitkin County Open Space & Trails Natural
Resource Manager
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Company Name: Pitkin County, Colorado
Rea Orthner
rea@peakecological.com
Principal Ecologist/Botanist
Peak Ecological Services LLC
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