HomeMy WebLinkAboutRFP - 7172 CHEMICAL SPILL CLEANUP AND HAZARDOUS MATERIALS HANDLING SERVICES1
REQUEST FOR PROPOSAL
7172 Chemical Spill Clean Up and Hazardous Materials Handling Services
The City is requesting proposals for 24-hour chemical clean-up services to assist the City in
collecting and removing chemicals from City owned property including streets, sewers,
waterways, City facilities, and, in emergencies, private property.
Proposals may be submitted by E-mail. E-mail submittal shall be e-mailed to:
jstephen@fcgov.com. Please send a separate e-mail to confirm that your proposal was
received. Written proposals, five (5) will be received at the City of Fort Collins' Purchasing
Division, 215 North Mason St., 2nd floor, Fort Collins, Colorado 80524. Proposals will be
received before 3:00 p.m. (our clock), September 15, 2010. Proposal No. 7172. If delivered,
they are to be sent to 215 North Mason Street, 2nd Floor, Fort Collins, Colorado 80524. If
mailed, the address is P.O. Box 580, Fort Collins, 80522-0580.
Questions concerning the scope of the project should be directed to Carol Webb, Regulatory and
Government Affairs Manager at (970) 221-6231 or cwebb@fcgov.com.
Questions regarding proposal submittal or process should be directed to John Stephen, CPPO,
CPPB, Senior Buyer, at (970) 221-6777 or jstephen@fcgov.com. .
A copy of the Proposal may be obtained as follows:
1. Download the Proposal/Bid from the BuySpeed Webpage,
www.fcgov.com/eprocurement
2. Come by Purchasing at 215 North Mason St., 2nd floor, Fort Collins, and request
a copy of the Bid.
The City of Fort Collins is subject to public information laws, which permit access to most
records and documents. Proprietary information in your response must be clearly identified and
will be protected to the extent legally permissible. Proposals may not be marked ‘Proprietary’ in
their entirety. Information considered proprietary is limited to material treated as confidential in
the normal conduct of business, trade secrets, discount information, and individual product or
service pricing. Summary price information may not be designated as proprietary as such
information may be carried forward into other public documents. All provisions of any contract
resulting from this request for proposal will be public information.
Sales Prohibited/Conflict of Interest: No officer, employee, or member of City Council, shall have
a financial interest in the sale to the City of any real or personal property, equipment, material,
supplies or services where such officer or employee exercises directly or indirectly any decision-
making authority concerning such sale or any supervisory authority over the services to be
rendered. This rule also applies to subcontracts with the City. Soliciting or accepting any gift,
gratuity favor, entertainment, kickback or any items of monetary value from any person who has
or is seeking to do business with the City of Fort Collins is prohibited.
Financial Services
Purchasing Division
215 N. Mason St. 2nd Floor
PO Box 580
Fort Collins, CO 80522
970.221.6775
970.221.6707
fcgov.com/purchasing
2
Collusive or sham proposals: Any proposal deemed to be collusive or a sham proposal will be
rejected and reported to authorities as such. Your authorized signature of this proposal assures
that such proposal is genuine and is not a collusive or sham proposal.
The City of Fort Collins reserves the right to reject any and all proposals and to waive any
irregularities or informalities.
Sincerely,
James B. O'Neill II, CPPO, FNIGP
Director of Purchasing & Risk Management
3
7172 Chemical Spill Clean Up
and
Hazardous Materials Handling Services
The City is requesting proposals for 24-hour chemical clean-up services to assist the City in
collecting and removing chemicals from City owned property including streets, sewers,
waterways, City facilities, and, in emergencies, private property. Poudre Fire Authority is
responsible for securing chemical spills in the community. However, in some cases the City
may need the assistance of the contractor to cleanup the site or remove bulk supplies of
process chemicals. Additionally, the contractor may be asked to supply appropriately trained
and certified workers for projects involving hazardous materials.
The service provider will be responsible for testing, characterizing, removing, and disposing
contaminated soil, ground water, and residual chemical. The service provider must be properly
staffed and equipped to respond to a variety of incidents and coordinate with Poudre Fire
Authority (PFA), Larimer County Department of Health and Environment (LCDHE), City staff,
and other designated City contractors in executing clean-up projects. The service provider may
be used for the purposes of handling hazardous materials and operating equipment during
projects in areas of known or suspected contamination.
Please provide cost estimates for 24 hrs/day, 7 day/week service and routine 8-5 business
hours. We also encourage potential contractors to familiarize themselves with city operations
and chemical supplies.
Awarded service provider must enter into the attached service agreement (for your review) and
provide the required insurance (Exhibit B). This agreement is effective for one year from the date
on the service agreement. At the option of the City, the Agreement may be extended for
additional one year periods not to exceed four (4) additional one year periods. Pricing changes
shall be negotiated by and agreed to by both parties and may use the Denver - Boulder CPI-U as
published by the Colorado State Planning and Budget Office as a guide. Written notice of renewal
shall be provided to the Service Provider and mailed no later than ninety (90) days prior to
contract end.
4
SCOPE OF WORK
Performance Requirements:
Comply with all applicable laws, regulations, and local ordinances, including but not limited to:
Environmental Protection Agency, Colorado Department of Public Health and Environment
CDPHE, State Oil Section, Occupational Safety and Health Administration, Department of
Transportation, Larimer County and City of Fort Collins.
Initial Response:
1. Respond and be fully equipped to begin operations at the cleanup site within two (one
hour preferred) hours of the initial contact unless authorized by City staff.
a. Service provider will develop a list of needed information to be used by City staff
to provide the contractor with the appropriate information to prepare for the
response.
2. Be prepared to integrate into the PFA National Incident Management System (NIMS)
when PFA is in charge of the scene.
3. Conduct a safety briefing with all personnel on site before beginning work.
4. Exercise the necessary precautions to protect all on-site personnel from potential
hazards associated with a spill, release, abandonment or project.
5. Identify chemical characteristics of unknown substances using direct reading
instruments and other field test methods.
6. Implement containment and cleanup strategies appropriate for the quantity, chemical
characteristics, and media involved in the project, spill, release or abandonment.
7. Keep a daily log of work performed, document and report observations made during
initial response and subsequent cleanup. Note such things as:
a. Bystander’s comments regarding cause of incident and chemicals involved.
b. The presence of contaminated soil, ground water or free product.
Response and Project Work:
1. Provide a schedule of costs for emergency cleanup services, including drive time with
the proposal.
a. Discuss cleanup plan with the City before starting work.
2. For projects and non-emergency response, provide a detailed scope of services to be
performed, anticipated schedule and detailed cost of services to be approved by the city.
3. Service provider’s personnel will be trained and maintain appropriate levels of
certification for the work being performed.
5
4. Prepare a site health and safety plan including contractor’s procedures to comply with all
worksite hazards and appropriate to the scope of the cleanup or project.
5. At minimum, conduct daily briefings including safety precautions and project updates
with City personnel.
6. Remove contaminated soil, ground water or free product from City facilities or spill site in
accordance with all applicable laws & regulations.
7. Secure contaminated materials to prevent subsequent release, personnel exposure,
damage to facilities, and ensure reliability of sampling and analysis until they can be
properly prepared for disposal.
8. Decontaminate existing site structures and equipment.
9. Collect and deliver analytical samples to a lab of the City’s choice.
a. Use EPA and CDPHE required sampling methods
b. Maintain proper chain of custody with analytical samples.
10. Evaluate site conditions, recommend and discuss disposal options with a City
representative.
11. Transport and temporarily store (if necessary and feasible) waste until materials can be
disposed of at an appropriate facility of the City’s choice.
12. Certificate of destruction will be required for disposal of scrap metal/tank, hazardous
wastes, and special wastes. Completed, signed manifests are required to prove proper
disposal of material. Documentation must be provided to the city within 90 days of
material removal.
13. The City requires a “No Further Action” letter (NFA) from LCDHE or State Agency on all
cleanup and projects as directed by the County or State.
14. A portion of the final invoice payment will be withheld until the City receives the
certificate of destruction and/or completed manifests and/or an NFA letter.
Project Completion:
1. Remove all supplies, equipment, and waste stored on site used for clean-up and
disposal.
2. Conduct a debriefing, if requested, with City personnel.
3. Prepare a complete final report within 10 days of project completion.
a. Provide an executive summary for reports greater than 10 pages in length.
4. Provide copies or daily logs from the response or project.
5. Provide an itemized bill for services provided.
6
PROPOSALS
The Submittal should indicate:
1. The number and technical expertise of personnel, applicable licenses and certifications.
2. Experience performing clean-up/project services, including examples of types of
contaminates.
3. Description of contractor’s safety program including list of routine and specialized
training for personnel based on state and federal regulatory requirements.
a. Provide information on training, experience and certifications related to removing
asbestos, lead, mold, Hanta virus or methamphetamine lab contamination.
4. List industrial hygiene services available to contractor personnel.
5. A schedule of charges for personnel (based on expertise), equipment and services for
on call emergency response.
6. A schedule of charges for personnel (based on expertise), equipment and services for
scheduled project work.
7. Ability to maintain a crew on standby.
8. List of subcontractors used and their qualifications. Include the name & phone number
of contact person.
9. List of available cleanup equipment and supplies.
10. The process for identification of chemical characteristics of unknown substances.
11. Prices charged for lab work.
12. Provisions for contract personnel during large scale clean-up projects.
13. Ability to store hazardous, special and non-hazardous waste until final disposal.
14. Elements of a closing report.
15. Amount of professional liability or errors and omissions insurance.
16. List of any citations, fines, settlements, or confirmed violations issued by any regulatory
or legal agency concerning performance on hazardous materials abatement contracts in
the last 3 years.
17. Client references, including name, address, and phone number of contact person.
18. Provide brief overview of your administrative recordkeeping procedures for personnel
training and documentation for lab analysis, waste disposal and spill response tracking.
This is not an exclusive contract. The City may contract with more than one cleanup contractor
and the City reserves the right to bid any work.
7
REVIEW AND ASSESSMENT
Professional firms will be evaluated on the following criteria. These criteria will be the basis for
review of the written proposals and interview session.
The rating scale shall be from 1 to 5, with 1 being a poor rating, 3 being an average rating, and 5
being an outstanding rating.
WEIGHTING
FACTOR
QUALIFICATION
STANDARD
2.0
Scope of Proposal
Does the proposal show an understanding of the
variety of project objectives and methodology to be
used.
2.0
Assigned Personnel
Do the persons who will be working on the project
have the necessary skills? Are people of the
requisite skills assigned to the project?
1.0
Availability
Are qualified personnel available to assist in meeting
the project as required? Are they available 24/7?
2.0
Cost and
Work Hours
Are the costs presented reasonable for the effort
required in each task or phase?
2.0
Firm Capability Does the firm have the support capabilities the
assigned personnel require? Has the firm done
previous projects of this type and scope?
SA rev03/10
8
Reference evaluation: (Top Ranked Firm)
The project Manager will check references using the following criteria. The evaluation rankings
will be labeled Satisfactory/Unsatisfactory.
QUALIFICATION
STANDARD
Overall Performance
Would you hire this Professional again? Did
they show the skills required by this project?
Timetable
Was the original Scope of Work completed
within the specified time? Were interim
deadlines met in a timely manner?
Completeness
Was the Professional responsive to client
needs; did the Professional anticipate
problems? Were problems solved quickly and
effectively?
Budget
Was the original Scope of Work completed
within the project budget?
Job Knowledge
a) If a study, did it meet the Scope of Work?
b) If Professional administered a construction
contract, was the project functional upon
completion and did it operate properly?
Were problems corrected quickly and
effectively?
CONFIDENTIALLITY AGREEMENT
According to Homeland Security Presidential Directive/Hspd-7, Information on critical
infrastructure of the City of Fort Collins provided to a contractor for purposes of preparing a
proposal, responding to a chemical emergency, or working on a project must be kept confidential.
If you have authorized access to the information regarding City infrastructure, it is your
responsibility to ensure that it is stored in a secure place and that unauthorized persons are not
provided with the information contained in any of the documents. Information refers to any:
plans, maps, photos, notes of discussions, logs, or any means of identifying structures and/or
procedures of the City’s infrastructure.
SA rev03/10
9
SERVICES AGREEMENT
THIS AGREEMENT made and entered into the day and year set forth below by and
between THE CITY OF FORT COLLINS, COLORADO, a Municipal Corporation, hereinafter
referred to as the "City" and , hereinafter referred to as "Service Provider".
WITNESSETH:
In consideration of the mutual covenants and obligations herein expressed, it is agreed
by and between the parties hereto as follows:
1. Scope of Services. The Service Provider agrees to provide services in
accordance with the scope of services attached hereto as Exhibit "A", consisting of pages
and incorporated herein by this reference.
2. The Work Schedule. [Optional] The services to be performed pursuant to this
Agreement shall be performed in accordance with the Work Schedule attached hereto as
Exhibit "B", consisting of ( ) pages, and incorporated herein by this reference.
3. Time of Commencement and Completion of Services. The services to be
performed pursuant to this Agreement shall be initiated within ( ) days following
execution of this Agreement. Services shall be completed no later than . Time is of the
essence. Any extensions of the time limit set forth above must be agreed upon in a writing
signed by the parties.
4. Contract Period. [Option 1] This Agreement shall commence upon the date of
execution shown on the signature page of this Agreement and shall continue in full force and
effect for one (1) year, unless sooner terminated as herein provided. In addition, at the option of
the City, the Agreement may be extended for an additional period of one (1) year at the rates
provided with written notice to the Professional mailed no later than ninety (90) days prior to
contract end.
SA rev03/10
10
4. Contract Period. [Option 2] This Agreement shall commence , 200 ,
and shall continue in full force and effect until , 200 , unless sooner terminated as
herein provided. In addition, at the option of the City, the Agreement may be extended for
additional one year periods not to exceed ( ) additional one year periods. Renewals
and pricing changes shall be negotiated by and agreed to by both parties. The Denver Boulder
Greeley CPIU published by the Colorado State Planning and Budget Office will be used as a
guide. Written notice of renewal shall be provided to the Service Provider and mailed no later
than ninety (90) days prior to contract end.
5. Delay. If either party is prevented in whole or in part from performing its
obligations by unforeseeable causes beyond its reasonable control and without its fault or
negligence, then the party so prevented shall be excused from whatever performance is
prevented by such cause. To the extent that the performance is actually prevented, the Service
Provider must provide written notice to the City of such condition within fifteen (15) days from
the onset of such condition. [Early Termination clause here as an option
6. Early Termination by City/Notice. Notwithstanding the time periods contained
herein, the City may terminate this Agreement at any time without cause by providing written
notice of termination to the Service Provider. Such notice shall be delivered at least fifteen (15)
days prior to the termination date contained in said notice unless otherwise agreed in writing by
the parties. All notices provided under this Agreement shall be effective when mailed, postage
prepaid and sent to the following addresses:
City:
City of Fort Collins
Attn: Purchasing
PO Box 580
Fort Collins, CO 80522
Copy to:
City of Fort Collins
Attn:
PO Box 580
Fort Collins, CO 80522
Service Provider:
In the event of early termination by the City, the Service Provider shall be paid for services
rendered to the date of termination, subject only to the satisfactory performance of the Service
SA rev03/10
11
Provider's obligations under this Agreement. Such payment shall be the Service Provider's sole
right and remedy for such termination.
7. Contract Sum. The City shall pay the Service provider for the performance of this
Contract, subject to additions and deletions provided herein, per the attached Exhibit "A",
consisting of pages, and incorporated herein by this reference.
8. City Representative. The City will designate, prior to commencement of the
work, its representative who shall make, within the scope of his or her authority, all necessary
and proper decisions with reference to the services provided under this agreement. All requests
concerning this agreement shall be directed to the City Representative.
9. Independent Service provider. The services to be performed by Service Provider
are those of an independent service provider and not of an employee of the City of Fort Collins.
The City shall not be responsible for withholding any portion of Service Provider's compensation
hereunder for the payment of FICA, Workmen's Compensation or other taxes or benefits or for
any other purpose.
10. Personal Services. It is understood that the City enters into the Agreement
based on the special abilities of the Service Provider and that this Agreement shall be
considered as an agreement for personal services. Accordingly, the Service Provider shall
neither assign any responsibilities nor delegate any duties arising under the Agreement without
the prior written consent of the City.
11. Acceptance Not Waiver. The City's approval or acceptance of, or payment for
any of the services shall not be construed to operate as a waiver of any rights or benefits
provided to the City under this Agreement or cause of action arising out of performance of this
Agreement.
12. Warranty.
SA rev03/10
12
a. Service Provider warrants that all work performed hereunder shall be
performed with the highest degree of competence and care in accordance with accepted
standards for work of a similar nature.
b. Unless otherwise provided in the Agreement, all materials and equipment
incorporated into any work shall be new and, where not specified, of the most suitable grade of
their respective kinds for their intended use, and all workmanship shall be acceptable to City.
c. Service Provider warrants all equipment, materials, labor and other work,
provided under this Agreement, except City-furnished materials, equipment and labor, against
defects and nonconformances in design, materials and workmanship/workwomanship for a
period beginning with the start of the work and ending twelve (12) months from and after final
acceptance under the Agreement, regardless whether the same were furnished or performed by
Service Provider or by any of its subcontractors of any tier. Upon receipt of written notice from
City of any such defect or nonconformances, the affected item or part thereof shall be
redesigned, repaired or replaced by Service Provider in a manner and at a time acceptable to
City.
13. Default. Each and every term and condition hereof shall be deemed to be a
material element of this Agreement. In the event either party should fail or refuse to perform
according to the terms of this agreement, such party may be declared in default thereof.
14. Remedies. In the event a party has been declared in default, such defaulting
party shall be allowed a period of ten (10) days within which to cure said default. In the event
the default remains uncorrected, the party declaring default may elect to (a) terminate the
Agreement and seek damages; (b) treat the Agreement as continuing and require specific
performance; or (c) avail himself of any other remedy at law or equity. If the non-defaulting party
commences legal or equitable actions against the defaulting party, the defaulting party shall be
liable to the non-defaulting party for the non-defaulting party's reasonable attorney fees and
costs incurred because of the default.
SA rev03/10
13
15. Binding Effect. This writing, together with the exhibits hereto, constitutes the
entire agreement between the parties and shall be binding upon said parties, their officers,
employees, agents and assigns and shall inure to the benefit of the respective survivors, heirs,
personal representatives, successors and assigns of said parties.
16. Indemnity/Insurance.
a. The Service Provider agrees to indemnify and save harmless the City, its
officers, agents and employees against and from any and all actions, suits, claims, demands or
liability of any character whatsoever brought or asserted for injuries to or death of any person or
persons, or damages to property arising out of, result from or occurring in connection with the
performance of any service hereunder.
b. The Service Provider shall take all necessary precautions in performing the
work hereunder to prevent injury to persons and property.
c. Without limiting any of the Service Provider's obligations hereunder, the
Service Provider shall provide and maintain insurance coverage naming the City as an
additional insured under this Agreement of the type and with the limits specified within Exhibit B,
consisting of one (1) page, attached hereto and incorporated herein by this reference. The
Service Provider before commencing services hereunder, shall deliver to the City's Director of
Purchasing and Risk Management, P. O. Box 580 Fort Collins, Colorado 80522 one copy of a
certificate evidencing the insurance coverage required from an insurance company acceptable
to the City.
17. Entire Agreement. This Agreement, along with all Exhibits and other documents
incorporated herein, shall constitute the entire Agreement of the parties. Covenants or
representations not contained in this Agreement shall not be binding on the parties.
18. Law/Severability. The laws of the State of Colorado shall govern the construction
interpretation, execution and enforcement of this Agreement. In the event any provision of this
SA rev03/10
14
Agreement shall be held invalid or unenforceable by any court of competent jurisdiction, such
holding shall not invalidate or render unenforceable any other provision of this Agreement.
19. Prohibition Against Employing Illegal Aliens. Pursuant to Section 8-17.5-101,
C.R.S., et. seq., Service Provider represents and agrees that:
a. As of the date of this Agreement:
1. Service Provider does not knowingly employ or contract with an illegal
alien who will perform work under this Agreement; and
2. Service Provider will participate in either the e-Verify program created
in
Public Law 208, 104th Congress, as amended, and expanded in Public Law 156, 108th
Congress, as amended, administered by the United States Department of Homeland Security
(the “e-Verify Program”) or the Department Program (the “Department Program”), an
employment verification program established pursuant to Section 8-17.5-102(5)(c) C.R.S. in
order to confirm the employment eligibility of all newly hired employees to perform work under
this Agreement.
b. Service Provider shall not knowingly employ or contract with an illegal alien to
perform work under this Agreement or knowingly enter into a contract with a subcontractor that
knowingly employs or contracts with an illegal alien to perform work under this Agreement.
c. Service Provider is prohibited from using the e-Verify Program or Department
Program procedures to undertake pre-employment screening of job applicants while this
Agreement is being performed.
d. If Service Provider obtains actual knowledge that a subcontractor performing
work under this Agreement knowingly employs or contracts with an illegal alien, Service
Provider shall:
1. Notify such subcontractor and the City within three days that Service Provider
SA rev03/10
15
has actual knowledge that the subcontractor is employing or contracting with an illegal alien;
and
2. Terminate the subcontract with the subcontractor if within three days of
receiving the notice required pursuant to this section the subcontractor does not cease
employing or contracting with the illegal alien; except that Service Provider shall not terminate
the contract with the subcontractor if during such three days the subcontractor provides
information to establish that the subcontractor has not knowingly employed or contracted with
an illegal alien.
e. Service Provider shall comply with any reasonable request by the Colorado
Department of Labor and Employment (the “Department”) made in the course of an
investigation that the Department undertakes or is undertaking pursuant to the authority
established in Subsection 8-17.5-102 (5), C.R.S.
f. If Service Provider violates any provision of this Agreement pertaining to the
duties imposed by Subsection 8-17.5-102, C.R.S. the City may terminate this Agreement. If this
Agreement is so terminated, Service Provider shall be liable for actual and consequential
damages to the City arising out of Service Provider’s violation of Subsection 8-17.5-102, C.R.S.
g. The City will notify the Office of the Secretary of State if Service Provider
violates this provision of this Agreement and the City terminates the Agreement for such breach.
20. Special Provisions. [Optional] Special provisions or conditions relating to the
services to be performed pursuant to this Agreement are set forth in Exhibit " ", consisting
of ( ) pages, attached hereto and incorporated herein by this reference.
CITY OF FORT COLLINS, COLORADO
a municipal corporation
By:_______________________________
James B. O'Neill II, CPPO, FNIGP
SA rev03/10
16
Director of Purchasing and Risk Management
Date:_____________________________
ATTEST:
_________________________________
City Clerk
APPROVED AS TO FORM:
________________________________
Assistant City Attorney
By:_______________________________
__________________________________
PRINT NAME
__________________________________
CORPORATE PRESIDENT OR VICE PRESIDENT
Date:_____________________________
ATTEST: (Corporate Seal)
_____________________________
CORPORATE SECRETARY
17
EXHIBIT “ ”
INSURANCE REQUIREMENTS
1. The Service Provider will provide, from insurance companies acceptable to the City, the
insurance coverage designated hereinafter and pay all costs. Before commencing work under
this bid, the Service Provider shall furnish the City with certificates of insurance showing the
type, amount, class of operations covered, effective dates and date of expiration of policies, and
containing substantially the following statement:
"The insurance evidenced by this Certificate will not be cancelled or materially altered,
except after ten (10) days written notice has been received by the City of Fort Collins."
In case of the breach of any provision of the Insurance Requirements, the City, at its option,
may take out and maintain, at the expense of the Service Provider, such insurance as the City
may deem proper and may deduct the cost of such insurance from any monies which may be
due or become due the Service Provider under this Agreement. The City, its officers, agents
and employees shall be named as additional insureds on the Service Provider's general liability
and automobile liability insurance policies for any claims arising out of work performed under
this Agreement.
2. Insurance coverages shall be as follows:
A. Workers' Compensation & Employer's Liability. The Service Provider shall
maintain during the life of this Agreement for all of the Service Provider's employees
engaged in work performed under this agreement:
1. Workers' Compensation insurance with statutory limits as required by
Colorado law.
2. Employer's Liability insurance with limits of $100,000 per accident,
$500,000 disease aggregate, and $100,000 disease each employee.
B. Commercial General & Vehicle Liability. The Service Provider shall maintain
during the life of this Agreement such commercial general liability and automobile liability
insurance as will provide coverage for damage claims of personal injury, including
accidental death, as well as for claims for property damage, which may arise directly or
indirectly from the performance of work under this Agreement. Coverage for property
damage shall be on a "broad form" basis. The amount of insurance for each coverage,
Commercial General and Vehicle, shall not be less than $500,000 combined single limits
for bodily injury and property damage.
In the event any work is performed by a subcontractor, the Service Provider shall be
responsible for any liability directly or indirectly arising out of the work performed under
this Agreement by a subcontractor, which liability is not covered by the subcontractor's
insurance.