Clover Creek Diversion Channel Habitat Enhancement Project

LAKE COUNTY WATERSHED PROTECTION DISTRICT
REQUEST FOR PROPOSALS
Clover Creek Diversion Channel
Habitat Enhancement Project
COUNTY OF LAKE
RFP No. 272224
Issued: September 23, 2026
Submission Deadline:
October 9, 2026 at 5:00 P.M.
By:
Tyler Lindberg
Water Resources Program Coordinator

Clover Creek Diversion Channel Habitat Enhancement Project
1. INTRODUCTION ................................................................................................................. 3
2. SCOPE OF SERVICES .......................................................................................................... 4
3. PROPOSAL CONTENT .................................................................................................................... 6
4. PROPOSAL SUBMITTAL ............................................................................................................. 6
5. PROPOSAL EVALUATION AND AWARD .................................................................................... 7
6. PROTEST PROCEDURES ............................................................................................................. 8
7. GENERAL TERMS AND CONDITIONS ......................................................................................... 9
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Clover Creek Diversion Channel Habitat Enhancement Project
1. INTRODUCTION
The County of Lake is inviting sealed proposals for the Clover Creek Diversion Channel Habitat
Enhancement Project. The Lake County Watershed Protection District is seeking a qualified
contractor to perform vegetation removal, sediment removal, and associated channel maintenance
within the Clover Creek Diversion Channel near Upper Lake, California. This work is part of the Clover
Creek Hitch Habitat Restoration Project that was outlined in a Habitat Mitigation and Monitoring Plan
(HMMP) prepared by Caltrans to fulfill compensatory mitigation requirements for Caltrans' Blue
Lakes Safety Project along Highway 20 in Lake County. This restoration project is intended to improve
habitat for State-listed threatened Clear Lake hitch and provide broader ecological benefits within
the Clover Creek-Middle Creek watershed. The anticipated budget for this project is approximately
$125,000.
The Clover Creek Diversion Channel is a perennial waterway bounded by levees that drains to Middle
Creek, Rodman Slough, and ultimately, Clear Lake. The diversion channel was completed in 1966 as
part of the larger Middle Creek Flood Control Project and diverts most water during peak flow times
away from the historic Clover Creek channel in order to provide flood protection for the town of
Upper Lake. The HMMP identifies accumulated sediment and vegetation overgrowth as existing
impairments to the channel within the project area. Sediment accumulation has raised channel
bottom elevations, contributed to flooding risk, and reduced native-species habitat, while invasive
vegetation, such as Himalayan blackberry and poison hemlock, has become established throughout
portions of the riparian corridor.
The project will be managed by the Lake County Watershed Protection District, hereinafter referred
to as the 'District'. Tribal cultural resources monitoring will be conducted during ground-disturbing
activities associated with project work.
The District will recruit, following local purchasing policy requirements, a qualified company or firm
to lead and facilitate the project. The selected company or firm will work closely with District staff to
temporarily divert flows within the Clover Creek Diversion Channel, remove vegetation, and excavate
accumulated excess sediment from the channel. Work will occur along an approximately 0.9-mile
stretch of the Clover Creek Diversion Channel upstream of its confluence with Middle Creek, as
shown in Figure 1. Final limits will be established by the County in the field.
Proposals should be submitted in accordance with the requirements of this solicitation, which are
contained herein.
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Clover Creek Diversion Channel Habitat Enhancement Project
Figure 1 - Project Extent
2. SCOPE OF SERVICES
The selected company or contractor will develop and perform a series of tasks to support the Clover
Creek Diversion Channel Habitat Enhancement Project. The scope of services shall include, at a
minimum, the following components listed hereafter, each integral to the successful execution of
the Project. It is anticipated that completion of tasks will require one month or less. As-built design
documents for the Clover Creek Diversion Channel will be made available upon request.
Task 1 - Mobilization, Site Preparation, and Access
The Contractor shall mobilize all labor, equipment, materials, temporary facilities, and erosion and
sediment control measures necessary to complete the work. The Contractor shall coordinate access,
staging, equipment movement, and work limits with the District prior to beginning work. Equipment
and operations shall be confined to approved access routes, staging areas, and work limits to
minimize disturbance to levees and adjacent properties. Under direction provided by District, the
Contractor shall comply with all applicable environmental permits1, avoidance and minimization
measures, cultural-resource requirements.
1 Acquisition and completion of all necessary environmental and regulatory permits are responsibility of
District, not contractor.
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Clover Creek Diversion Channel Habitat Enhancement Project
Task 2 - Temporary Water Diversion and Cofferdam
Prior to vegetation or sediment removal within wetted portions of the Clover Creek Diversion
Channel, the Contractor shall furnish, install, maintain, and subsequently remove a temporary
cofferdam and associated water-control measures sufficient to isolate the active work area.
When possible, the temporary diversion system shall redirect flow from the Clover Creek Diversion
Channel into historic Clover Creek for the duration of in-channel work. The Contractor shall be
responsible for maintaining continuous and controlled conveyance of streamflow, preventing
uncontrolled releases into the active work area, minimizing turbidity and erosion, and maintaining
the diversion system throughout construction.
The Contractor shall provide all pumps, piping, temporary barriers, erosion protection, energy
dissipation, and other incidental materials necessary to safely establish and maintain the diversion.
Upon completion of in-channel work, the Contractor shall remove temporary diversion facilities and
restore affected areas to a stable condition.
Task 3 - Invasive Vegetation Removal
The Contractor shall remove all vegetation within the limits identified by the District. Removal
methods may include hand cutting, mechanical removal, grubbing, or other District-approved
methods appropriate to site conditions. Removed vegetation, roots, seeds, and other biomass
capable of propagating shall be collected and transported to an approved disposal location or
otherwise managed as directed by the District. Equipment shall be cleaned before entering and
leaving the project area as necessary to prevent the introduction or spread of invasive species.
Task 4 - Sediment Removal and Channel Restoration
Following establishment of the temporary water diversion and completion of vegetation clearing
necessary for access, the Contractor shall excavate accumulated sediment from designated portions
of the Clover Creek Diversion Channel. The work is intended to lower areas of elevated channel bed,
improve channel conveyance, reduce sediment-related flooding, and enhance aquatic and riparian
habitat consistent with the HMMP.
The Contractor shall excavate only within limits and to elevations established by the District and
shall avoid unnecessary disturbance to existing channel banks, levees, and habitat features outside
the project area. Excavated material shall be retained by the contractor and loaded, transported,
stockpiled, sorted, reused, or disposed of at location(s) approved by the District.
Because sediment removal constitutes ground-disturbing activity within an area of cultural
sensitivity, the District and the Contractor will coordinate excavation with required monitoring of
tribal cultural resources (TCRs).
Task 5 - Demobilization and Site Restoration
Upon completion of sediment and vegetation removal, the Contractor shall remove the cofferdam,
temporary diversion facilities, construction debris, excess materials, temporary erosion-control
measures no longer required, and equipment from the project area. Streamflow shall be returned
to the Clover Creek Diversion Channel in a controlled manner and only after authorization from the
District.
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Clover Creek Diversion Channel Habitat Enhancement Project
All areas disturbed by construction access, staging, vegetation removal, sediment handling, and
temporary water diversion shall be stabilized and restored as directed by the District. The Contractor
shall leave the project area in a clean, stable condition suitable for subsequent native revegetation,
maintenance, and habitat monitoring activities required under the HMMP.
3. PROPOSAL CONTENT
3.1 Proposal Compliance: In order to enable direct comparison of competing responses, you must
submit your Proposal in conformity to the requirements stated herein. Failure to adhere to all
requirements may result in your Proposal being disqualified as non-responsive.
3.2 Proposal. Please assemble your Proposal in the following order.
A. Cover Letter. A standard one-page cover letter must be included which represents your
agreement to supply the requested goods and/or services detailed in the RFP.
B. Company Profile. Provide a brief history of your company, a general description of your
services and qualifications, and an executive summary of your response. Content should be
no more than three pages.
C. Work Plan. Provide your specific proposal to address the Scope of Work outlined in
Section 2 above. At the very least, this should describe in detail how the service shall be
provided for each task.
D. Project Schedule. A proposed timeline for completion of the tasks and subtasks outlined
in the Work Plan. It is suggested that completion of work will take one month or less.
E. Cost Proposal. Include a detailed breakdown of proposed costs associated with each task.
All prices submitted are non-binding at this stage of the procurement process and are
subject to negotiation.
3.3 Pre-Proposal Site Visit: An on-site meeting will be held with contractors interested in submitting
proposals for this project to examine the project site and provide the opportunity for questions on
Monday, October 5th, 2026, at 2:00 PM. Please confirm your attendance at this meeting by emailing
Tyler Lindberg at tyler.lindberg@lakecountyca.gov.
4. PROPOSAL SUBMITTAL
Proposals submitted must meet the following criteria to be acceptable for consideration regarding
this project:
4.1 In order to be considered, responses may be submitted either on paper or electronically through
the County Purchasing Agent. Electronic submissions must be in either Microsoft Word or PDF
format and sent to LakeCountyPurchasingAgent@lakecountyca.gov no later than Friday, October
9th, 2026, by 5:00 PM.
Hard copy responses submitted must include one (1) original and five (5) unbound copies of the
proposal. Proposals submitted via hard copy must be received no later than Friday, October 9th,
2026, by 5:00 PM, and addressed to:
RFP No. 272224 for Request for Proposals for:
Clover Creek Diversion Channel Habitat Enhancement Project
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Clover Creek Diversion Channel Habitat Enhancement Project
CONFIDENTIAL
Lake County Watershed Protection District
Attn: Tyler Lindberg
255 N. Forbes Street
Lakeport, CA 95453
Normal business hours are Monday through Friday, 8:00 am to 5:00 pm. Staff can be reached at
(707) 263-2344.
Proposals received in writing may be mailed through the United States Postal Service or any other
courier service and they may be delivered in person to the above office. Faxed proposals will NOT
be accepted.
4.2 In order to receive addenda and information regarding this RFP, proposer must register online
at: https://www.lakecountyca.gov/Bids.aspx. Proposers are cautioned to read the scope of services
and proposal contents herein and be sure to respond to all items listed in these sections.
4.3 Proposals received incomplete or late, for any reason, shall not be accepted.
4.4 All questions regarding this Request for Proposals may be submitted in writing at any time prior
to Tuesday, October 6th, 2026, by 12:00 PM, addressed to Tyler Lindberg, Water Resources Program
Coordinator at: LakeCountyPurchasingAgent@lakecountyca.gov. Only written questions will be
accepted. Questions will be answered by Wednesday, October 7th, 2026, by 5:00 PM and uploaded
as an addendum to the website listed in Section 4.2.
Proposers may contact only the individual identified above and are specifically directed not to
contact other County personnel for meetings, conferences, or other technical discussions related to
this RFP. No questions will be answered by other County staff.
4.5 All proposals submitted in response to this RFP will become the property of the County and will
not be returned. The County reserves the right to make use of any information or ideas contained
in the proposals. The proposal itself shall not constitute a contract, but will, if accepted, be
incorporated into the contract between the County and the selected proposer.
Please note: The successful Proposer shall be expected to fully meet all representations made in its
proposal, including demonstration of project understanding, work plan, project schedule, project
team, and cost proposal.
5. PROPOSAL EVALUATION AND AWARD
The County is using the competitive proposal process, wherein the experience and responsiveness
of each submitted proposal is evaluated as it relates to the Scope of Services. Administrative staff
will evaluate the proposals as described below.
5.1 Proposals shall be opened and checked to ensure that each complies with the requirements
of the RFP. The absence of required information may render the proposal non-responsive and
may be cause for rejection.
5.2 All proposals will be evaluated to determine whether they meet all the requirements of the
RFP.
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Clover Creek Diversion Channel Habitat Enhancement Project
5.3 A Consultant Selection Board may be convened to review, discuss and rank the proposals,
using the following criteria:
A. Criteria
a. Candidate's technical competence and ability to meet the requirements of the Scope of Services
in a timely fashion.
b. Candidate's past record of performance, including control of costs and quality of work.
c. Candidate's familiarity with the problems applicable to the project.
5.4 Prior to final selection, a short list of qualified and responsive Consultants may be requested
to participate in an interview. The purpose of the interview will be to provide an opportunity for
each Consultant to present their qualifications and proposals in person and/or to answer any
questions that County staff may have regarding the Consultant's submittals. If interviews are to
be held, the time and place of the interview will be arranged after the short list is completed.
Typically, a minimum of three (3) proposals will be selected for the Short List; however, the
County may, at its option, choose to interview more or less than three (3) qualified Consultants
or select consultants based solely on evaluating written proposals.
5.5 If an agreement cannot be reached with the top ranked Consultant(s), the County will then
contact the next highest ranked firm and attempt to negotiate a contract scope of work and fee.
This process will be continued until a contract scope of work and fee is successfully negotiated,
or until the County determines to cease negotiations with any firm.
5.6 County reserves the right to select multiple contractors.
5.7 The County of Lake is an Equal Opportunity/Affirmative Action Employer and the successful
Consultant(s) will be required to comply with the provisions of Federal Executive Order 11246
and applicable state and federal laws. Consultants should be familiar with the Employers'
Practical Guide to Reasonable Accommodations under the Americans with Disabilities Act as
published by the Job Accommodation Network, a service of the U.S. Department of Labor's Office
of Disability Employment Policy.
6. PROTEST PROCEDURE
The County of Lake will follow the Appeal Procedure in their Consultant Selection Policy as
follows:
6.1 Appeal Procedure:
Any party with a direct financial interest who is aggrieved by any alleged material irregularity in
connection with the intended RFP award, may file a protest with the Purchasing Agent or
Assistant Purchasing Agent, where such protest is based on alleged violations of Federal, State,
or local law or ordinance, or alleged material irregularity in either the County's RFP invitation or
in the proposal to which an award is intended. Generally, non-material irregularities in a RFP
response are those that substantially conform to the RFP requirements and do not affect the RFP
price, time or conditions in such a way as to affect the amount of the RFP or provide a competitive
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Clover Creek Diversion Channel Habitat Enhancement Project
advantage or benefit not allowed to other bidders. Material irregularities in a RFP invitation
provide a competitive advantage or benefit to one (1) bidder that is not enjoyed by other bidders.
The Purchasing Agent or Assistant Purchasing Agent may determine whether an alleged
irregularity exists and whether it is material or non-material and shall have the authority to waive
non-material irregularities. A RFP protest must:
(a)Be written,
(b)State the specific alleged violation of law or alleged material irregularity,
(c)Request a determination of the appeal,
(d)Provide a telephone number and email address at which the appellant can be contacted,
(e)Be filed no later than seven (7) days after the date of the Notice of Intent to Award Letter
and/or formal Bid Opening (holidays excepted). Any protest filed after this time will not be
considered.
6.2 The party filing the appeal ("appellant") must concurrently transmit a copy of all appeal
documents and any attachments to all other parties with a direct financial interest which may be
adversely affected by the determination of the appeal.
6.3 Within seventy-two (72) hours of receipt of appeal, the Purchasing Agent or Assistant
Purchasing Agent shall provide written notification to the appellant of the determination. A
determination under this procedure shall be final except that the Purchasing Agent's decision
may be appealed to the County Administrative Officer in writing within forty-eight (48) hours
from the Purchasing Agent's or Assistant Purchasing Agent's notification to appellant.
7. GENERAL TERMS AND CONDITIONS
By your submission of a proposal, you agree to be bound by the following conditions:
7.1 To the fullest extent allowed by law, RFP's will not be public record until discussion and
negotiations with Respondent have been completed, as such premature disclosure would
jeopardized the County's and the Respondents negotiating interests. If any proposal contains trade
secrets or other information that is confidential or proprietary by law, Respondent shall label all such
pages with a stamped annotation such as: "CONFIDENTIAL-PROPRIETARY TRADE SECRETS, DO NOT
DISCLOSE", and further, provide written notification to the County of its request to keep said
information confidential. A Respondent's request for confidentiality must be made in writing and
enclosed in the envelope containing the proposal. The proprietary or confidential data must be
readily separable from the proposal in order to facilitate eventual public inspection of the non-
confidential portion of the proposal.
7.2 The County reserves the right to cancel this RFP at any time, even after opening of proposals.
7.3 County is not liable for any costs incurred by Proposer in the preparation, presentation or in any
other aspect of the Proposal.
7.4 Disposition of Proposal(s) and Contract Award:
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Clover Creek Diversion Channel Habitat Enhancement Project
A. All proposals shall become the property of Lake County.
B. Failure to furnish all information requested in this RFP or to follow the proposal format
may disqualify a proposal.
C. County reserves the right to accept or reject all or any part of any proposal, waive
immaterial defects, informalities, irregularities, negotiate with all qualified Respondents,
and award the contract to the firm or individuals, who, in the sole judgment of the County,
best serves the interests of the County. The County may terminate negotiations if, in its
opinion, they are unsuccessful and begin negotiations with other respondents.
D. A response to this RFP is an offer to contract with the County based upon the terms,
conditions, scope of work and/or specifications contained herein. County shall have no
contractual or other obligation to a Respondent under any successfully negotiated contract
until the contract has been approved and signed by both parties. The contents of the
proposal submitted by the successful Respondent and this RFP will become part of any
contract awarded.
E. Issuance of this RFP in no way constitutes a commitment by the County to procure or
contract for the articles of goods or services solicited.
F. Proposers may be required before the award of any contract to show, to the complete
satisfaction of the County, the necessary facilities, ability, and financial resources to provide
the services specified in a satisfactory manner.
7.5 Respondent shall indemnify and defend County and its officers, employees, and agents against
and hold them harmless from any and all claims, losses, damages, and liability for damages, including
attorney's fees and other costs of defense incurred by County, whether for damage to or loss of
property, or injury to or death of person, including properties of County and injury to or death of
County officials, employees or agents, arising out of, or connected with the use of any copyrighted
or uncopyrighted composition, secret process, patented or unpatented invention, articles or
appliances furnished or used under this Request and any subsequent Contract, unless such
damages, loss, injury or death is caused solely by the negligence of County.
7.6 Default by Respondent: In case of default by the successful Respondent, Lake County may
procure the articles or services from other sources and may deduct from any monies due, or that
may thereafter become due to the Respondent, the difference between the price named in the
Purchase Order, Contract, or Agreement with said Respondent and the County's subsequent cost to
obtains substitute articles or services. Prices paid by the County must be considered the prevailing
market price at the time such purchase is made.
7.7 Lake County reserves the rights to amend, alter, or change the rules and conditions contained in
this RFP prior to the deadline for submission and to request additional data after the deadline. If it
becomes necessary to do so, an addenda or supplements to the RFP will be issued and shall become
a part of the RFP. The County is not responsible for any other explanation or interpretation. It is the
responsibility of the Respondent to ensure that he/she has received all addendums and/or
supplements prior to submitting a proposal.
7.8 It is the County's intent that this Request for Proposal (RFP) permits competition. It shall be the
Respondent's responsibility to advise the County in writing if any language, requirement,
specification, etc., or any combination thereof, inadvertently restricts or limits the requirements
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