Soil Borings - 750 Fuller Ave NE

PURCHASING DIVISION
Joni Laming, Manager
(616) 632-7720
purchasing@kentcountymi.gov
SOLICITATION
Solicitation Type Request for Quotation (RFQ)
Solicitation Number 6628
Description Soil Borings - 750 Fuller Ave NE
Date of Issuance 7/30/2026
Inquiries Deadline Date & Time (local) 8/10/2026, 2 PM
Due Date & Time (local) 8/12/2026, 2 PM
Pre-Submission Conference No
Buyer Name LaBudde
INTRODUCTION
The Kent County Purchasing Division is soliciting quotations to provide labor and materials to complete
fifteen (15) soil borings located at 750 Fuller Ave NE Grand Rapids, MI 49503.
All work shall be performed by qualified personnel under supervision of a registered professional
engineer. All reports shall bear the seal of a registered professional engineer.
Completion of field work within 30 days of award and entire project completion within 60 days of award.
Contractor will need to coordinate site visits with Erhardt Construction.
Kyle Vanderploeg - kvanderploeg@erhardtcc.com
Sam Dells - sdells@erhardtcc.com
BID OPENING
The sealed submissions will be publicly opened and read aloud by the Kent County Purchasing Division.
Kent County Purchasing Division will conduct public openings via teleconference. Click here to join the
public opening.
SCOPE
Perform soil borings as shown on the attached location and depth plan. Borings should be performed
with a rotary drill rig advanced to sample depths with hollow-stem augers. The borings shall include soil
sampling based upon the Split-Barrel Sampling procedure. Recovered split-barrel samples should be
collected in sealed containers to be used for further testing. Soil samples shall be kept for 60 days.
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For locations where deep foundations are recommended, provide the capacities for the deep foundation
system. Determine if rock coring is required.
If the geotechnical engineer finds it necessary to change the location or depth of these proposed
borings, the architect shall be notified, and a new location or depth shall be agreed upon between the
architect and geotechnical engineer.
The geotechnical engineer shall contact the owner and all utility companies for information regarding
buried utilities and structures, shall take all reasonable precautions to prevent damage to property both
visible and concealed, and shall reasonably restore the site to the condition existing prior to the
geotechnical engineer's entry. Such restoration shall include, but not be limited to, backfilling of borings,
patching of slabs and pavements, and repair of lawns and plantings.
Each boring should be temporarily plugged, pending additional groundwater readings. At the completion
of the groundwater readings, the borings shall be permanently plugged, including patching of slabs and
pavements.
Groundwater level observations shall be recorded during and immediately after the completion of each
boring and located on the boring logs.
Boring locations shall be staked in the field and recorded by GPS. Any boring that is relocated from the
provided plan shall be noted on the boring location plan. Existing ground elevation for the borings shall
be taken from the provided plan or established using a GPS device.
Prepare an overall boring plan and a boring log for each boring. Boring logs shall include information on
materials encountered, existing ground surface elevations, penetration resistances, pertinent field
observations made during drilling operations, and results of laboratory testing.
Laboratory testing shall include:
* Visual classification of recovered soil samples in accordance with ASTM D-2388
* Moisture content and hand penetrometer tests on cohesive samples
Prepare a written report that shall include:
* Description of the site conditions on the date that you are on the site
* General descriptions of the project; informing your assumptions
* Subsurface conditions
* Groundwater conditions
* Analysis and recommendations
o Site preparation and earthwork recommendations
o General site subbase preparation
Include water management, soil proof rolling, and any special conditions
that will need to be met to construct the subbase
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o Subgrade preparation for slabs
Will vapor retarder or protection be required?
Will isolation joints be required for separation from walls?
o Subgrade testing requirements for slabs
o Engineered fill requirements
Material and placement guidelines
Testing and compaction recommendations
Native soil: can it be used for fill? If so, any special requirements?
o Foundation design recommendations
Type of foundations system with maximum net allowable bearing
pressure or capacity designated
Foundation undercutting recommendation if necessary
Foundation depth for frost protection
Frost heave considerations in clay soils
Minimum width and spread dimensions
Total settlement for shallow foundation estimate
Groundwater management; underdrain recommendations
Rigid below grade wall lateral earth pressures
Cantilever retaining wall lateral earth pressures
Modulus of subgrade reaction
o Seismic site class
o Construction considerations
Groundwater management
Earthmoving recommendations, compaction, and testing
Imported fill, native fill use and recommendations
o Pavement design recommendations
o Based on the owner's anticipated use of the site, prepare a hot mix asphalt
pavement section recommendation. Section shall include asphalt pavement,
aggregate base and any sand subbase if required. Two sections may be required
(light duty and heavy duty) if directed by the owner
Include the traffic assumptions used to determine Equivalent Single Axle
Loads (ESALs) over a 15-20-year period.
Recommend pavement subgrade preparation.
Include material recommendation for asphalt and gravel base.
Address if underdrains will be needed.
o Based on the owner's anticipated use of the site, prepare a concrete pavement
section design for (parking, drives, dumpster pad and other items)
* In the area where borings are placed for possible detention pond locations, evaluate the
location for site infiltration capacity. This may require a permeability test.
Building Structural Borings
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Five (5) borings are required (See Map for locations)
Borings are to be a minimum of 40'0" deep from existing grade
Pavement Borings
Eight (8) borings are required (see Map for locations)
Borings are to be a minimum of 5'0" deep from existing grade
Retention Borings (Infiltration Testing)
Two (2) borings are required (see Map for locations)
Borings are to be a minimum of 20'0" deep from existing grade
Optional - Soil Contamination Testing
Soil Profile Description (pedological descriptions, not just engineering classifications)
* Topsoil thickness
* Rooting depth
* Depth to restrictive clay
* Mottling
* Organic Horizons
* Fragipans, and hardpans
Infiltration Testing
* ASTM Infiltration Testing
* Percolation Testing
Soil Compaction Testing
* Bulk Density
* Cone Penetrometer
Biological Soil Health
* Microbial Respiration
* Active Carbon
* Soil Respiration
* Aggregate Stability
* Biological Activity
Soil Organic Matter Characterization (not just the percentage)
* Stable Organic Matter
* Active Organic Matter
* Carbon Content
Soluble Salts
* Electrical conductivity
* Sodium Adsorption Ratio (SAR)
* Exchange Sodium Percentage
Soil Contaminant Testing
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* Heavy metals
* Petroleum Hydrocarbons
* Per- and Polyfluoroalkyl Substances (PFAS)
* Lead
* Arsenic
* Polycyclic Aromatic Hydrocarbons (PAH's)
USDA Soil Mapping Verification
Rooting Depth Investigation
Soil Texture by Horizon
Kent County will award and contract for the goods and services in this Solicitation in an efficient and
timely manner. In no event will notification of award be more than 45 days from the date of submission.
The Kent County Standard Submission Terms posted on the Bid Opportunities page of the Kent County
Purchasing Division website are incorporated by reference and shall be deemed to have the same force
and effect as if fully set forth herein.
PERFORMANCE AND PAYMENT BOND
Each contract over $50,000 must be accompanied by a Performance Bond and a Payment Bond, each
payable to the Owner (County of Kent) and each in the amount of 100% of the contract price with a
corporate surety approved by the funding agency, for the faithful performance of the contract.
INQUIRIES
Any and all communication regarding this Solicitation shall be on the Kent County Purchasing Division
Inquiry Blog via the Bid Opportunities page or during pre-proposal meetings. Kent County reserves the
right to determine the response format or not respond, at its sole discretion.
INVITATION FOR BID/RFQ SUBMISSION
Complete submissions must be received in the Kent County Purchasing Division on or before the due
date/time specified by the designated clock (local time). Late, faxed, or emailed responses will NOT be
considered.
Submissions may be submitted electronically on the Bid Opportunities page of the Kent County
Purchasing Division's website. Respondent must include a complete submission as 1 non-password
protected PDF document.
Respondent shall submit the Submission Form ("Bid Form" "Response Form") posted on the Bid
Opportunities page of the Kent County Purchasing Division's website. Click the Submit Online icon to
submit electronically or to print the Submission Form. Respondent must submit the Bid Bond with
Submission Form if applicable.
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The time required to upload a submission may vary. Respondent assumes all risks associated with
electronic submission, including all technological difficulties, and deems the County and its service
provider harmless and without fault. Successful electronic submissions are confirmed via Respondent's
email. Respondent shall view the link in the confirmation email to determine accuracy prior to due
date/time.
Submissions that deviate from the Solicitation specifications will only be considered if the deviations are
clearly detailed and noted within the submission. In case of a dispute regarding the true intent and
meaning of the specifications, the County's interpretation will prevail. When a Solicitation states no
alternates, no deviations are permitted.
Kent County is not liable for cost incurred prior to award. A submission shall constitute an irrevocable
offer for a period of 45 days from the due date/time. In the event the notification of award is not made
within 45 days from the due date/time, the Respondent may withdraw or provide a written extension of
their submission.
Submissions may only be withdrawn by written request if the request is received before the due
date/time. Withdrawals after opening shall be subject to Kent County Fiscal Policy - Centralized
Purchasing 5(i)(2).
NO BID
Please provide feedback if you are electing not to participate in this Solicitation.
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Project: Kent County Administration Building
Subject: Geotechnical Investigation Boring Map
Project No: 53436049
By: J. Loew Date: 06/05/2026
Checked By: Date: