Glencoe Golf Club Driving Range Protective Netting Addendum 1

Location:	Illinois
Posted:	May 19, 2026
Due:	May 22, 2026
Agency:	Village of Glencoe
Type of Government:	State & Local
Category:	23 - Ground Effect Vehicles, Motor Vehicles, Trailers, and Cycles Z - Maintenance, Repair or Alteration of Real Property
Solicitation No:	26-011
Publication URL:	To access bid details, please log in.

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Village of Glencoe

26-011 2026 Glencoe Golf Club Driving Range Protective Netting

Addendum 1

The attached geotechnical report was completed in 2023 by Construction & Geotechnical

Material Testing, Inc. for the design and construction of the new Glencoe Golf Club Clubhouse.

Bidders should coordinate with their licensed engineer to determine if the information

provided in the report is adequate for the design and calculations for the driving range netting

pole and foundations. The Village does not have any additional soil information available. Any

further soil investigations warranted should be included in the price of your proposal.

Written acknowledgment of this addendum will be required to be submitted with the sealed

bid/proposal.

Signed: ________________________________________

Contractor: ____________________________________

Date: __________________________________________

Submitted:

Stella Nanos

General Manager

Village of Glencoe

May 19, 2026

60 Martin Lane, Elk Grove Village, Illinois 60007

Telephone (630) 595-1111 ♦ Fax (630) 595-1110

November 17, 2023

Stella Nanos

Village of Glencoe | Glencoe Colf Club

675 Village Court

Glencoe, Illinois 60022

CGMT Project No. 23G0482A

Reference:

Report of Subsurface Exploration and Geotechnical Engineering Services, Proposed

New Clubhouse, 621 Westley Road, Glencoe, Illinois

Dear Ms. Nanos:

CGMT, Inc. has completed the subsurface exploration and geotechnical engineering analyses for the proposed New

Clubhouse to be located at 621 Westley Road, in Glencoe, Illinois. This report describes the subsurface exploration

procedures, laboratory testing, and geotechnical recommendations for project construction. A Boring Location Plan is

included in the Appendix of this report along with the Boring Logs performed for the exploration.

We appreciate this opportunity to be of service to the Village of Glencoe | Glencoe Colf Club during the design phase of

this project. If you have any questions with regard to the information and recommendations presented in this report, or

if we can be of further assistance to you in any way during the planning or construction of this project, please do not

hesitate to contact us.

Respectfully,

CONSTRUCTION AND GEOTECHNICAL MATERIAL TESTING, INC.

Pratik Patel, P.E.

Vice President

3pc: Encl.

REPORT OF

SUBSURFACE EXPLORATION AND

GEOTECHNICAL ENGINEERING SERVICES

NEW CLUBHOUSE

621 WESTLEY ROAD

GLENCOE, ILLINOIS

CGMT PROJECT NO. 23G0482A

FOR

VILLAGE OF GLENCOE | GLENCOE COLF CLUB

GLENCOE, ILLINOIS

NOVEMBER 17, 2023

CGMT Project No. 23G0482A

New Clubhouse

Glencoe, Illinois

TABLE OF CONTENTS

EXECUTIVE SUMMARY

PROJECT OVERVIEW

Introduction

Project Description

Scope of Work

EXPLORATION RESULTS

Site Description

Soil Conditions

Groundwater Observations

Seismic Zone

ANALYSIS AND RECOMMENDATIONS

Overview

Subgrade Preparation and Engineered Fill

Subgrade Preparation

Engineered Fill

Footing Foundations

Rammed or Vibro-Compacted Aggregate Piers

Floor Slab Design

Pavements

General Construction Considerations

EXPLORATION PROCEDURES

Subsurface Exploration Procedures

Laboratory Testing Program

CLOSING

APPENDIX

PAGE

CGMT Project No. 23G0482A

New Clubhouse

Glencoe, Illinois

EXECUTIVE SUMMARY

Construction & Geotechnical Material Testing, Inc. (CGMT) has completed your subsurface exploration and geotechnical

engineering project. The subsurface conditions encountered during our exploration and CGMT’s conclusions and

recommendations are summarized below. This summary should not be considered apart from the entire text of the report with

all the qualifications and considerations mentioned herein. Details of our conclusions and recommendations are discussed in

the following sections and in the Appendix of this report.

The project site is located at 621 Westley Road in Glencoe, Illinois. A total of twelve (12) exploratory borings, B-1 through B-

7 and P-1 through P-5, were performed for this project. The soil conditions encountered at the borings performed at the site

are summarized as follows.

The surface materials were underlain by dark brown and brown, very stiff to hard silty clay fill soils that extended to depths of

approximately 3½ to 8½ feet below the existing ground surface. Beneath the clay fill, Borings B-4, B-5, B-6, P-4, and P-5

encountered brown, loose to medium dense sand that extended to depths of approximately 6 feet below existing grade. The fill

soils were underlain mainly by natural, stiff to hard silty clay soils that extended to depths of approximately 25 feet below the

existing ground surface. Within the clay profile, Borings B-1, B-3, B-4, B-6, P-3, and P-4 encountered 1½ to 6½ feet thick layers

of medium dense silt between depths of approximately 8½ to 25 feet below the existing ground surface.

If available, records of compaction obtained during the mass earthwork phase of the project should be provided to CGMT for

our review. However, if records are not available, the existing fill soils appear to have been placed with some measure of control

of moisture content and density and it should be feasible to support floor slabs, pavements, and new fill.

If the Village of Glencoe is willing to accept some risk of total and differential settlement and associated long term maintenance,

the existing fill material similar to those encountered in the borings extending to depths of approximately 3½ to 8½ feet below

the surrounding grade may remain in place below floor slabs and pavements but the subgrade must pass a proofroll under the

observation of a CGMT geotechnical engineer or soils technician. However, if the Village of Glencoe is unwilling to accept the

risk, then the existing fill soils should be completely removed and replaced with new engineered fill.

Based on the anticipated structural loading and subsurface conditions, conventional shallow foundation systems consisting of

spread and/or continuous footings, extended through existing fill soils (encountered in the borings to depths of 3½ to 8½ feet

below the existing ground surface) bearing on the natural, stiff to hard silty clay, medium dense silt soils, or new properly

compacted engineered fill is considered feasible and appropriate to support the proposed clubhouse improvements. For

footings, extended through existing fill soils, bearing at depths of at least 3½ feet below grade on natural, stiff to hard silty clay,

medium dense silt soils, or new, properly compacted engineered fill, we recommend a maximum net allowable soil bearing

pressure of 3,000 psf be used to proportion the footings.

Existing fill soils were encountered to depths of approximately 3½ to 8½ feet below the existing ground surface. Complete

removal and replacement discussed above may not be economical due to high construction cost. As an alternative, for ground

improvement techniques and construction of conventional shallow foundations, the use of compacted/rammed aggregate piers,

similar to Geopier® rammed aggregate piers and Vibro Piers can be considered for support of foundations for the new

clubhouse. It is our opinion that foundations supported on compacted/rammed aggregate piers or Vibro Piers as discussed

above will likely permit proportioning foundations for a net allowable soil bearing capacity of 3,000 psf, though this must be

verified by the rammed aggregate piers or Vibro Piers installer.

We recommend that the excavation of building foundations be monitored full-time by a CGMT geotechnical engineer or his

representative to verify that the exposed subgrade materials and the soil bearing pressure will be suitable for the proposed

structure.

Report Prepared By:

Nicholas Wolff

Nicholas P. Wolff, P.E.

Geotechnical Engineer

Report Reviewed By:

Pratik Patel

Pratik Patel, P.E.

Vice President

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

Description	Opening Date/Time	Closing Date/Time
26-011 Glencoe Golf Club Driving Range Protective Netting Addendum 1	May 08, 2026 10:30 AM	May 22, 2026 11:00 AM

Glencoe Golf Club Driving Range Protective Netting Addendum 1

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