HomeMy WebLinkAboutContract No. 2014-2561May 5, 2014
Mr. Kevin Hansen
Director of Public Works /City Engineer
City of Columbia Heights
63738 1h Avenue NE
Columbia Heights, MN 55421
Braun Intertec Corporation Phone: 651.487.3245
1826 Buerkle Road I Fax: 651.487.1812
Saint Paul, NIN 55110 Web: braunintertec.com
2014
ProposalQTB003673 2561
Re: Proposal for Preliminary Evaluation of the Central Avenue Library Site
Columbia Heights, Minnesota
Dear Mr. Hansen:
Braun Intertec respectfully submits this proposal to complete a preliminary evaluation of the proposed
City of Columbia Heights Public Library site located on Central Avenue in Columbia Heights, MN. To
perform this evaluation, you have requested cost estimates to perform the following services:
■ Carlson Professional Services previously performed soil borings on this site as part of an
environmental evaluation. Preliminary evaluations will be performed based on that available
data; along with our experiences in this area and any other data we may have available to us.
■ Further explore the site by performing additional geotechnical and environmental explorations
to prepare more detailed evaluations, and to better evaluate the geotechnical and
environmental conditions for the design and construction of the library facility on this site.
■ An evaluation of the potential grading, environmental remediation, and pavement construction
costs associated with this site, as well as the 42nd Avenue site for which Braun Intertec is
currently performing a geotechnical evaluation.
Our Understanding of Project and Project Purpose
Based on our discussions, we understand that the City is considering the site on Central Avenue, referred
to as "Mady's site," as a potential location for a new public library. At one time, a Burger King restaurant
occupied the site and was subsequently demolished in 2005.
In March of 2010, a Phase II Environmental Site Assessment (ESA) and Conceptual Response Action Plan
(RAP) report was prepared for the site by Carlson Professional Services. As part of that work, several
direct -push soil borings were performed in May of 2006 and a design plan was provided. The push -
probes on this site encountered as much as 26+ feet of debris -laden fill overlying organic deposits. With
the debris -laden fill and buried organics on this site, we understand the former Burger King Building was
supported on timber pile foundations. Included in the design plan prepared by Carlson were
recommendations for capping the site and installing a vapor venting system beneath the proposed
buildings on this site.
AA /EOE Providing engineering and environmental solutions since 1957
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 2
The primary purpose of the work requested of us is to evaluate the Central Avenue site as a potential
location for the new library.
Based on available information that has been provided to us by the City and from our ongoing evaluation
of the 42nd Avenue site, it is our preliminary assumption that the 42nd Avenue site would be
constructed on spread footings, with a slab on grade. Given the findings from the Phase II ESA report
prepared for the Mady's site, we assume that site would require that the proposed building be supported
on deep foundations, with a structural slab. However, none of the soil borings performed by Carlson
were extended to depths suitable for estimating depths and capacities for deep foundations. Assuming
that it would be acceptable for this phase of the project to assume soil conditions at depths based on our
experiences in this area and our review of available published geology maps, we could estimate deep
foundation depths and capacities based on that information. With the variable soils conditions indicated
in the Carlson borings, it is important to note that there are risks that the actual subsurface conditions on
this site will be different than those that we assume for our evaluation.
If it is desired that a more detailed evaluation be performed to better evaluate the various design options
and their impacts on construction costs, we recommend a geotechnical investigation be performed at
the Mady's site. Furthermore, we recommend screening and monitoring the geotechnical borings that
will be located in the area of the proposed library building and parking area to better evaluate the
environmental conditions on this site.
Additionally, we recommend performing a soil vapor assessment (SVA) to supplement the previous data
collected at the site. The potential for soil vapor intrusion impacts was not addressed in the prior
investigations conducted at the site. Given the presence of dump materials mixed with municipal waste,
the potential exists for the emission of volatile organic compounds and methane. The previous Phase II
report included a conceptual RAP that included the installation of a geosynthetic liner over a passive soil
venting system. While this precautionary measure may be acceptable, we recommend obtaining soil gas
analytical data from the site to support the need for the venting system and to ensure that methane is
not being generated. In the event that methane, an explosive gas, is detected, the venting system may
require modification to accommodate.
We have provided a preliminary scope of work and cost estimate for environmental services below. We
have listed the SVA as an optional cost as this scope of work can be conducted later if you prefer.
Information gathered from both the geotechnical and environmental investigations (whether it is based
solely on the available data provided in the Carlson Report or that information is supplemented with
more detailed site exploration services) would be used to evaluate the potential construction costs for
each of the two sites given the options for design and construction.
BRAUN
INTERTEC
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 3
Scope of Services
Geotechnical and Environmental Review of Historical Information
The purpose of our geotechnical and environmental review is to evaluate the existing subsurface
information provided in the Carlson Report, along with our experiences in this area and the data we can
obtain from published geology maps, and provide a preliminary summary letter that addresses
preliminary geotechnical and environmental recommendations. This information can be used by the
design team to advance the design phase of the project, to provide preliminary estimates for design of
deep foundations and structural slabs for support of the proposed library building, environmental
remediation, and design of utilities and pavements.
Additional Geotechnical and Environmental Services
If more accurate data is desired to better evaluate the soils at depth on this site for design of deep
foundations, additional soil borings taken to estimated pile depths should be performed. The following
tasks are proposed as part of the additional geotechnical and environmental investigation. If unfavorable
or unforeseen conditions are encountered at any point during the completion of the tasks that lead us to
recommend an expanded scope of services, we will contact you to discuss the conditions before
resuming work.
Geotechnical Investigation
Site Access, Staking and Utility Clearance
Based on our review of the site, we assume that all soil boring areas will be accessible with a truck -
mounted drill rig.
We will use GPS to perform and document the staking. Depending on access requirements or potential
utility conflicts, our field crew may slightly alter the exploration locations from those proposed to
facilitate accessibility.
Prior to drilling, we will contact Gopher State One Call and arrange for notification to the appropriate
utility vendors to mark and clear the exploration locations of public underground utilities. You or your
authorized representatives are responsible to notify us before we begin our work of the presence and
location of any underground objects or private utilities that are not the responsibility of public agencies.
Standard Penetration Test Borings
Based on the available data, it is likely that the proposed library building will need to be supported on
some sort of deep foundation system. To further evaluate that assumption and to assist in design, for
this preliminary evaluation, we recommend two pile -depth borings to a depth of at least 60 feet and four
shallower borings to a depth of fifteen feet below the existing surface. Penetration tests will be
performed and samples will be gathered at 2 1/2 -foot vertical intervals to 15 feet and then 5 -foot vertical
intervals to the termination depth.
BRAUN
INTERTEC
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 4
If groundwater is encountered in the boreholes, the depth where it is observed will be recorded on the
boring logs.
Depending on the results of the borings, we may recommend the borings be taken to deeper depths or
that additional borings be performed. If deeper borings or additional borings are needed, we will contact
you prior to increasing our total estimated drilled footage and submit a Change Order summarizing the
anticipated additional effort and the associated cost, for your review and authorization.
Borehole Abandonment
With the known contamination on this site, we are assuming all of the borings will be sealed in
accordance with Minnesota Well Code.
Sample Review and Laboratory Testing
Soil samples will be returned to our laboratory and will be visually classified and logged by a geotechnical
engineer. To help classify the materials encountered and estimate their engineering properties, we have
budgeted to perform 4 moisture content tests, 2 mechanical analyses (through a #200 sieve only) and 2
organic content tests.
Environmental Investigation
We propose that an environmental technician be at the site during the sampling activities to monitor the
subsurface materials encountered at each soil boring location. Soil discoloration and odors will be
documented if detected. In addition, soil samples will be screened for the presence of organic vapors
with a PID using both direct readings from each sample and the headspace method of analysis
recommended in "Soil Sample Collection and Analysis Procedures," Minnesota Pollution Control Agency
(MPCA) Petroleum Remediation Program Guidance Document 4 -04 (September 2008).
Soil Vapor Assessment (Optional)
In addition to screening and monitoring the geotechnical borings, we recommend conducting an SVA at
the site. The objective of the SVA is to evaluate the Site for potential soil -vapor impacts as a result of
historical site use.
Braun Intertec will advance six temporary soil -vapor points for purposes of collecting soil -vapor samples.
We propose to locate three of the soil vapor probes inside the proposed building footprint and three in
the proposed parking lot area. The soil vapor probes will be completed to a depth of 6 feet below the
existing ground surface. After reaching the desired depth, a disposable point will be expended, and the
soil -vapor probe will be withdrawn approximately 1 foot. New polyethylene tubing will be attached to a
downhole adapter and threaded into a gasketed coupling. An air pump will be attached to the downhole
tubing and the line will be purged of 1 to 3 volumes of air. Following purging, the line will be clamped and
a vacuum canister will be connected for the collection of the soil -vapor sample. Following collection of
the sample, a photoionization detector (PID) will be attached to the downhole tubing and the highest
measureable concentration of total organic vapors will be recorded. The soil -vapor samples will be
submitted to our laboratory for analysis of the presence and concentration of VOCs using Environmental
Protection Agency (EPA) Method TO -15, as well as methane.
BRAUN
NTE RTEC
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 5
Upon completion of the soil -vapor probes, the boreholes will be backfilled with bentonite chips in
accordance with Minnesota Department of Health requirements.
Following completion of the field activities and receipt of the laboratory analytical report, we will
summarize our investigation procedures and the results of sampling analyses in a report. The report will
be provided to you in draft form for review and comment. Because development of this site will involve
continued enrollment in the voluntary program at the MPCA, this will be a separate document from the
geotechnical evaluation report.
Reporting
Data obtained from the additional geotechnical and environmental investigations will be used to better
evaluate the soils on this site for support of the proposed library. We will prepare a preliminary report
including:
■ Boring logs describing the materials encountered. The depth to groundwater will be identified if
encountered during drilling.
■ A written summary of the subsurface profile and groundwater conditions.
■ A CAD sketch of the boring locations with corresponding boring numbers identified.
■ A discussion related to the various alternatives for supporting the proposed facility, including
options for construction of proposed utilizes and pavements.
Evaluation of Estimated Construction Costs
To assist the City in their determination of site selection, we will evaluate approximate earthwork
grading /corrections, environmental remediation, and pavement construction costs associated with both
the 42nd Avenue and the Central Avenue sites. We understand that the City's architectural firm, Leo A.
Daly, will estimate costs of the building structural foundations and floor slabs based on the design
parameters we provide to them.
Additional Services
Drilling
If any drilling is performed beyond the depths discussed above, we will charge an additional $31 per
lineal foot beyond the originally intended termination depth. This cost includes sealing of the boreholes
and the environmental technician.
Additional site mobilization will be charged at $292 per day.
BRAUN
INTERTEC
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 6
Cost and Invoicing
Our estimated costs for each of the proposed services is as follows:
W;�'- -
ODI /Additional Geotechnical and Environmental Services - $8,073
ovEvaluation of Estimated Construction Costs - $2,500
�A\ C, ?Optional Soil Vapor Assessment— $4,336
A tabulation showing our estimated hourly and /or unit rates associated with our proposed scope of
services is also attached. We would be happy to meet with you and discuss our proposed scope of
services further, clarifying the various scope components, or to discuss how the scope may be adjusted
to meet your project requirements.
Our work may extend over several invoicing periods. As such, for work that is performed during the
course of each invoicing period, we will submit partial progress invoices.
Schedule and Final Reporting
To perform the Geotechnical and Environmental Review of Historical Information, we anticipate that that
report would be delivered to the City within two weeks of authorization. This report would include our
Evaluation of the Estimated Construction Costs.
If the Additional Geotechnical and Environmental Services are authorized, we anticipate the field
exploration could start on May 12, 2014 and would take two days to complete. Soil classification and
laboratory test results would take approximately one week to complete. Our final report would be
delivered three weeks after laboratory testing is complete.
If our proposed scope of services cannot be completed according to this schedule due to circumstances
beyond our control, we may need to revise this proposal prior to completing the remaining tasks.
General Remarks
We appreciate the opportunity to present this proposal to you. It is provided in duplicate so the original
can be retained for your records and the copy can be signed and returned to us. Please return the
signed copy in its entirety.
The proposed fee is based on the scope of services described and the assumptions that our services will
be authorized within 30 days and that others will not delay us beyond our proposed schedule.
BRAUN
INTERTEC
City of Columbia Heights
Proposal QTB003673
May 5, 2014
Page 7
We included the Braun Intertec General Conditions, which provide additional terms and are a part of our
agreement. To have questions answered or schedule a time to meet and discuss our approach to this
project further, please call Amy Grothaus at 651.261.7122 or Bob Janssen at 612.885.8786.
Sincerely,
BRAUN INTERTEC CORPORATION
Amy J. G
neer
President /Principal Engineer
Attachments:
Cost Estimate
General Conditions (9/1/13)
The proposal is accepted, and you are authorized to proceed. Check appropriate box:
Provide check list of various options.
��J �Vr V�V NII���YQ1 i�I�M a.�IY��v111iIc111a1 I1CYICW C71 �
[�wdllitional Geotechnical and Environmental Services - $8,073
valuation of Estimated Construction Costs - $2,500
❑ Optional Soil Vapor Assessment - $4,336
C> I y � — ci - -k -
Authorizer's Signatu
\N Ems— S-,V-
Authorizer's Name (please print or type)
Date
BRAUNI
Project Proposal
I N T E R T E C
OTB003673
Central Avenue Library Site
Client:
Work Site Address:
Service Description:
City of Columbia Heights
39th and Central Avenue
Site Evaluation
Kevin Hansen
637 38th Ave NE
Columbia Heights, MN 55421
763 -782 -2880
Project Manager:
Justin Kolander
Description Quantity Units
Unit Price
Extension
Phase 1
Evaluation of Historical Information
Activity 1.1
Consulting
$2,500.00
126
Project Engineer
8.00 Hour
125.00
$1,000.00
128
SenlorEngineer
2.00 Hour
150.00
$300.00
340
Senior Scientist
8.00 Hour
150.00
$1,200.00
Phase 1 Total'
$2,500.00
Phase 2
Additional Geotechnical and Environmental Investigation
Activity 2.1
Truck Mounted Drill Rig and Crew
$4,596.00
9000
Truck Mounted Drilling Services, per hour
16.00 Each
220.00
$3,520.00
205
Site layout and utility clearance
3.00 Hour
75.00
$225.00
1862
Trip Charge
1.00 Each
35.00
$35.00
5099
Trimble R8 Rover (horizontal and vertical), per hour
3.00 Each
26.00
$75.00
3753
Soil Boring Location Sketch Scaled
1.00 Each
148.00
$146.00
9902
Sealing records, each
1.D0 Each
55.00
$55.00
9724
Bore hole abandonment materials, per foot
180.00 Each
3.00
$540.00
Activity 2.2
Soils Testing
$260.00
1166
200 wash (ASTM C 117), per sample
2.00 Each
55.00
$110.00
1152
Moisture content (ASTM D 2216), per sample
4.00 Each
10.00
$40.00
1174
Organic content (ASTM D 2974), per sample
2.00 Each
55.00
$110.00
Activity 2.3
Soil ScreenlnWield analysis
$1,870.00
5036
PID (includes technWan), per day
2.00 Each
900,00
$1,800.00
1868
Trip Charge
2.00 Each
35.00
$70.00
Activity 2.4
Consulting
$1,347.00
138
Project Assistant
1.00 Hour
72.00
$72.00
126
Project Engineer
8.00 Hour
125.00
$1,000.00
128
Senor Engineer
1.00 Hour
150.00
$150.00
125
Project Manager
1.00 Hour
125.00
$125.00
Phase 2 Total:
$8,073.00
Phase 3
Evaluation of Construction Costs
Activity 3.1
Consulting
$2,500.00
126
Project Engineer
8.00 Hour
125.00
$1,000.00
128
Senior Engineer
2.D0 Hour
150.00
$300.00
340
Senior3clentlst
8.00 Hour
150.00
$1,200.00
05/05/2014 09:32 AM Page 1 of 2
BRAUK
Project Proposal
N T E R T E
QT8003673
Central Avenue Library Site
Phase 3 Total:
$2,500.00
Phase 4
Optional SVA
Activity 4.1
Drilling Services
$762.00
9435
Soll gas sampling tubing and consumables, per sample 6.00 Each
17.00
$102.00
9000
Truck Mounted Drilling Services, per hour
3.00 Each
220.00
$660.00
Activity 4.2
Soil Screening/Field analysis
$485.00
5036
PID (Includes technician), per day
0.50 Each
900.00
$450.00
1862
Trip Charge
1.00 Each
35.00
$35.00
Activity 4.3
Soil Chemistry
$1,650.00
4102
TO-15 MPCA list
6.00 Each
210.00
$1,260.00
4103
TO -15 Cannister rental prop charge
6.00 Each
65.00
$390.00
Activity 4.4
Project Management & Reporting
$1,439.00
371
CADD /Graphics Operator
1.00 Hour
95.00
$95.00
360
Project Assistant
2.00 Hour
72.00
$144.00
340
Senior Scientist
8.00 Hour
150.00
$1,200.00
Phase
4 Total:
$4,336.00
Proposal Total:
$17,409.00
05/05/2014 09:32 AM Page 2 of 2
General Conditions
Section 1: Our Agreement
1.1 Our agreement ( "Agreement') with you
consists of these General Conditions and the
accompanying written proposal or
authorization. This Agreement is our entire
agreement. It supersedes prior agreements. It
may be modified only in a writing signed by us,
making specific reference to the provision
modified.
1.2 The words "you," 'we," "us," and "our"
include officers, employees, and
subcontractors.
1.3 In the event you use a purchase order or
other form to authorize our services, any
conflicting or additional terms are not part of
our Agreement. Directing us to start work prior
to execution of this Agreement constitutes your
acceptance. If, however, mutually acceptable
terms cannot be established, we have the right
to withdraw our proposal without liability to
you or others, and you will compensate us for
services already rendered.
Section 2: Our Responsibilities
2.1 We will provide the services specifically
described in our Agreement with you. You
agree that we are not responsible for services
that are not fairly included in our specific
undertaking. Unless otherwise agreed in
writing, our findings, opinions, and
recommendations will be provided to you in
writing. You agree not to rely on oral findings,
opinions, or recommendations without our
written approval.
2.2 In performing our professional services,
we will use that degree of care and skill
ordinarily exercised under similar
circumstances by reputable members of our
profession practicing in the same locality. If you
direct us to deviate from our recommended
procedures, you agree to hold us harmless from
claims, damages, and expenses arising out of
your direction.
2.3 We will reference our field observations
and sampling to available reference points, but
we will not survey, set, or check the accuracy of
those points unless we accept that duty in
writing. Locations of field observations or
sampling described in our report or shown on
our sketches are based on information
provided by others or estimates made by our
personnel. You agree that such dimensions,
depths, or elevations are approximations unless
specifically stated otherwise in the report. You
accept the inherent risk that samples or
observations may not be representative of
things not sampled or seen and, further, that
site conditions may change overtime.
2.4 Our duties do not include supervising your
contractors or commenting on, overseeing, or
providing the means and methods of their
work, unless we accept such duties in writing.
We will not be responsible for the failure of
your contractors to perform in accordance with
their undertakings, and the providing of our
services will not relieve others of their
responsibilities to you or to others.
2.5 We will provide a health and safety
program for our employees, but we will not be
responsible for contractor, job, or site health or
safety unless we accept that duty in writing.
2.6 You will provide, at no cost to us,
appropriate site safety measures as to work
areas to be observed or inspected by us. Our
employees are authorized by you to refuse to
work under conditions that may be unsafe.
2.7 Estimates of our fees or other project
costs will be based on information available to
us and on our experience and knowledge. Such
estimates are an exercise of our professional
judgment and are not guaranteed or
warranted. Actual costs may vary. You should
allow a contingency in addition to estimated
costs.
Section 3: Your Responsibilities
3.1 You will provide us with prior
geotechnical and other reports, specifications,
plans, and information to which you have
access about the site. You agree to provide us
with all plans, changes in plans, and new
information as to site conditions until we have
completed our work.
3.2 You will provide access to the site. In the
course of our work some site damage is normal
even when due care is exercised. We will use
reasonable care to minimize damage to the
site. We have not included the cost of
restoration of normal damage in the estimated
charges.
3.3 You agree to provide us, in a timely
manner, with information that you have
regarding buried objects at the site. We will not
be responsible for locating buried objects at the
site unless we accept that duty in writing. You
agree to hold us harmless from claims,
damages, losses, and related expenses
involving buried objects that were not properly
marked or identified or of which you had
knowledge but did not timely call to our
attention or correctly show on the plans you or
others on your behalf furnished to us.
3.4 You will notify us of any knowledge or
suspicion of the presence of hazardous or
dangerous materials in a sample provided to us.
You agree to provide us with information in
your possession or control relating to
contamination at the work site. If we observe
or suspect the presence of contaminants not
anticipated in our Agreement, we may
terminate our work without liability to you or
to others, and we will be paid for the services
we have provided.
3.5 Neither this Agreement nor the providing
of services will operate to make us an owner,
operator, generator, transporter, treater,
storer, or a disposal facility within the meaning
of the Resource Conservation Recovery Act, as
amended, or within the meaning of any other
law governing the handling, treatment, storage,
or disposal of hazardous materials. You agree
to hold us harmless and indemnify us from any
such claim or loss.
3.6 Monitoring wells are your property, and
you are responsible for their permitting,
maintenance, and abandonment unless we
accept that duty in writing.
3.7 You agree to make disclosures required by
law. In the event you do not own the site, you
acknowledge that it is your duty to inform the
owner of the discovery or release of
contaminants at the site. You agree to hold us
harmless and indemnify us from claims related
to disclosures made by us that are required by
law and from claims related to the informing or
failure to inform the site owner of the discovery
of contaminants.
Section 4: Reports and Records
4.1 Unless you request otherwise, we will
provide our report in an electronic format.
4.2 Our reports, notes, calculations, and other
documents and our computer software and
data are instruments of our service to you, and
they remain our property but are subject to a
license to you for your use in the related
project for the purposes disclosed to us. You
may not transfer our reports to others or use
them for a purpose for which they were not
prepared without our written approval. You
agree to indemnify and hold us harmless from
claims, damages, losses, and expenses,
including attorney fees, arising out of such a
transfer or use. At your request, we will provide
endorsements of our reports or letters of
reliance, but only if the recipients agree to be
bound by the terms of our agreement with you
and only if we are paid the administrative fee
stated in our then current Schedule of Charges.
4.3 Because electronic documents may be
modified intentionally or inadvertently, you
agree that we will not be liable for damages
resulting from change in an electronic
document occurring after we transmit it to you.
4.4 If you do not pay for our services in full as
agreed, we may retain work not yet delivered
to you and you agree to return to us all of our
work that is in your possession or under your
control.
4.5 Samples and field data remaining after
tests are conducted and field and laboratory
equipment that cannot be adequately cleansed
of contaminants are and continue to be your
property. They may be discarded or returned to
GC Page 1 of 2