ESBD_524128_1780593661539_Attachment G - Scope of Work.pdf

May 11, 2026

Construction and Facilities Management Office Design and Project Management Branch

Camp Mabry Parking Lot Expansion Project Location: Camp Mabry 2200 W. 35th St. Austin, Texas

The Construction and Facilities Management Office (CFMO) of the Texas Military Department (TMD) is requesting bids for the Camp Mabry Parking Lot Expansion Project located in Austin, Texas. The project includes construction of one (1) New Hot Asphalt Parking Lot, Road Base Parking 2, Road Base Parking 3, and Road Base Parking 4, along with the selective demolition and reconstruction of an existing retaining wall.

SCOPE OF WORK

Construction of One (1) New Hot Asphalt Parking Lot and Three (3) Road Base Parking Areas

Camp Mabry – New Parking Improvements

Per “Mabry New Parking Exhibit A”

1. PROJECT OVERVIEW

The Work generally consists of construction of the following parking improvements at Camp Mabry, as identified on Mabry New Parking Exhibit A:

1. New Hot Asphalt Parking Lot

2. Road Base Parking 2

3. Road Base Parking 3

Bid Option / Add Alternate No. 1:

4. Road Base Parking 4

The Work shall also include:

Selective demolition of non-historic retaining wall elements

Reconstruction of a new limestone masonry retaining wall to visually match the adjacent historic limestone wall

Contractor laydown coordination within the designated laydown area shown on Exhibit A

Clearing, grubbing, stripping, excavation, grading, proofrolling, compaction, testing, base installation, asphalt paving (New Hot Asphalt Parking Lot only), curbing, wheel stops, striping, drainage shaping, SWPPP/erosion control, cleanup, and closeout

Site layout and parking area nomenclature shall match Mabry New Parking Exhibit A.

2. BASE BID WORK

The Base Bid shall include all labor, materials, equipment, supervision, testing, temporary facilities, permits (if applicable), and incidentals required to provide a complete and usable project for the following:

New Hot Asphalt Parking Lot

Road Base Parking 2

Road Base Parking 3

Selective demolition and limestone retaining wall reconstruction

Unless specifically noted otherwise, all work described herein shall be included in the Base Bid.

2.1 Bid Option / Add Alternate No. 1

The Contractor shall provide a separate price for Road Base Parking 4.

Work shall include all labor, materials, equipment, and incidentals necessary to construct Road Base Parking 4 in accordance with this Scope of Work. Pricing for Bid Option No. 1 shall not be included in the Base Bid. Failure to provide pricing for Bid Option No. 1 may result in the bid being considered non-responsive.

3. SCOPE OF WORK – NEW HOT ASPHALT PARKING LOT

3.1 Location

The New Hot Asphalt Parking Lot shall be constructed in the location identified as “New Hot Asphalt Parking Lot” on Mabry New Parking Exhibit A, adjacent to the Recruiting and Education Office.

3.2 Approximate Limits

Approximate footprint is as shown on Exhibit A and is anticipated to be approximately:

90 feet x 120 feet

Approximately 10,800 square feet (±10%)

Final dimensions and layout shall be field verified by the Contractor.

3.3 Work Included

The Contractor shall provide all work necessary to construct the New Hot Asphalt Parking Lot, including but not limited to:

Clearing and grubbing

Removal of vegetation, roots, and debris

Stripping topsoil and unsuitable material

Excavation to required section depth

Proofrolling and subgrade stabilization

Placement and compaction of flexible base

Placement and compaction of Hot Mix Asphalt pavement

Concrete curbing

Precast concrete wheel stops

Thermoplastic striping and directional arrows

Drainage grading and tie-ins

Final cleanup and stabilization

4. NEW HOT ASPHALT PARKING LOT – TECHNICAL REQUIREMENTS

4.1 Clearing, Stripping, and Earthwork

Clear and grub entire work area

Strip topsoil and organics to suitable subgrade

Excavate minimum 10 inches below finished grade, or deeper as required to achieve stable subgrade and specified section

Remove and dispose of unsuitable soils encountered during proofrolling

Dispose of excess material off-site

4.2 Subgrade Preparation

Proofrolling

Proofroll with pneumatic tire roller, minimum 25-ton loaded weight

Identify unstable, pumping, or rutting areas

Rework until stable

Compaction

Compact subgrade to not less than 90% of Maximum Dry Density

Laboratory standard: ASTM D698

Field density testing: ASTM D6938 or ASTM D1556

Moisture control: ±2% of Optimum Moisture Content

Testing Frequency

Minimum 1 density test per 5,000 SF

Additional testing in reworked or suspect areas

4.3 Flexible Base

6 inches compacted thickness

TxDOT Item 247 – Type A, Grade 1

Place in lifts not exceeding 8 inches loose thickness

Compaction

100% of Maximum Dry Density

Per Tex-113-E or ASTM D698

Moisture within ±2% OMC

4.4 Hot Mix Asphalt Pavement

4 inches total compacted thickness o 2-inch binder course o 2-inch surface course

Per TxDOT Item 340

Tack coat between lifts

Compaction

92% to 97% of Maximum Theoretical Density (Rice)

Per Tex-207-F or ASTM equivalent

Surface Requirements

No ponding permitted

Provide positive drainage

Cross slope and parking circulation shall generally match the exhibit / parking layout

4.5 Concrete Curbs

6 inches wide x 18 inches deep

3,000 PSI minimum concrete

Control joints at 10 feet maximum

Installed at stall heads and perimeter, as required by final layout

4.6 Wheel Stops

Precast 6-foot concrete wheel stops

Anchor with rebar dowels

Tops of dowels sealed with silicone, grout, or approved equal

4.7 Striping / Markings

Thermoplastic striping

90 mil minimum dry film thickness

Angled stalls per parking layout

Directional arrows as indicated

Apply only after asphalt has adequately cured

5. SCOPE OF WORK – ROAD BASE PARKING 2, ROAD BASE PARKING 3

5.1 General

The Contractor shall provide all work necessary to construct the parking areas identified on Mabry New Parking Exhibit A as:

Road Base Parking 2

Road Base Parking 3

Road Base Parking 4 (Bid Option No.1)

The nomenclature used in all submittals, RFIs, pay applications, and correspondence shall match the exhibit exactly.

5.2 Locations

As shown on Mabry New Parking Exhibit A:

Road Base Parking 2 – southwest / lower western parking area adjacent to the internal drive near the Recruiting and Education Office approach

Road Base Parking 3 – parking area west of the solar field / internal drive

Road Base Parking 4 – parking area west of the 36 ID Band building

Final extents shall be field verified by the Contractor with the Owner prior to construction.

5.3 Approximate Areas

Approximate sizes are as follows:

Road Base Parking 2: approximately 16,000 SF

Road Base Parking 3: approximately 12,000 SF (verify field)

Road Base Parking 4: approximately 10,000 SF (verify field)

Final dimensions and limits shall be verified prior to bidding and prior to construction.

5.4 Work Included

For Road Base Parking 2 and 3, the Contractor shall provide:

Clearing and grubbing

Removal of vegetation and organics

Stripping of topsoil to stable subgrade

Rough grading and shaping

Proofrolling

Reworking unstable soils

Placement and compaction of flexible base surfacing

Drainage shaping and tie-ins

Density testing

Final grading and cleanup

Work associated with Road Base Parking 4 shall be provided only if Bid Option / Add Alternate No. 1 is awarded.

6. ROAD BASE PARKING TECHNICAL REQUIREMENTS

6.1 Clearing and Grading

Clear vegetation and organic material

Strip topsoil to stable subgrade

Rough grade to promote drainage

Provide minimum 2% slope to prevent ponding

Tie smoothly into adjacent grades and existing drive surfaces

6.2 Subgrade Preparation

Proofrolling

Proofroll with pneumatic tire roller, minimum 25-ton loaded weight

Compaction

Compact subgrade to not less than 90% Maximum Dry Density

Per ASTM D698

Moisture content within ±2% OMC

Correction of Unstable Areas

Rework unstable areas until a stable subgrade is achieved

6.3 Flexible Base Surface

6 inches compacted thickness

TxDOT Item 247 – Type A, Grade 1

Compaction

100% Maximum Dry Density

Per Tex-113-E

Moisture content within ±2% OMC

6.4 Grading Tolerances

Elevation tolerance: ±0.10 ft

Smooth transitions at tie-ins

No standing water permitted

6.5 Testing

Provide density testing for:

Subgrade

Flexible base

Testing reports shall be submitted for review through Projectmates.

Failed areas shall be reworked and retested at Contractor expense.

7. SELECTIVE DEMOLITION AND LIMESTONE RETAINING WALL RECONSTRUCTION

(BASE BID)

7.1 General

The Base Bid shall include selective demolition of non-historic retaining wall elements and construction of a new limestone masonry retaining wall to visually match the adjacent historic limestone wall.

7.2 Existing Conditions

The site contains:

An existing historic limestone wall segment, approximately 8 feet long and approximately 3 feet high, which shall remain in place; and

A non-historic addition, consisting generally of:

o Concrete step/slab elements o Horizontal timber/telephone pole retaining wall sections

7.3 Demolition

The Contractor shall:

Remove only the non-historic retaining wall additions

Remove concrete step/slab elements

Remove timber/telephone pole retaining wall sections

Remove associated debris and incidental embedded materials

Dispose of all demolished materials off-site

Protect the historic limestone wall from vibration, impact, undermining, cracking, staining, or other damage

No demolition or modification of the historic limestone wall is permitted without written Owner approval.

7.4 New Limestone Wall

The Contractor shall construct a new limestone masonry retaining wall in place of the removed non-historic wall section.

Requirements

Natural limestone rock masonry

Fully bedded and grouted / mortared

Visually compatible with adjacent historic wall

Battered / tapered profile

Maximum exposed height: 3 feet

Approximate base width: 3 feet

Approximate top width: 1 foot

Length as required to replace removed section and tie into adjacent grades and existing wall

7.5 Tie-In to Existing Wall

Provide #4 epoxy-set reinforcing dowels

#4 dowels @ 16 inches O.C. vertically, three (3) minimum

6 inches minimum embedment into existing wall

12 inches minimum embedment into new wall

Tight joint and fully pointed / grouted interface

7.6 Foundation / Base

6-inch minimum concrete leveling pad

3,000 PSI minimum concrete

3'-6" minimum width

Founded on firm, proofrolled, undisturbed or recompacted subgrade

Subgrade compacted to 95% Standard Proctor minimum

7.7 Drainage / Backfill

12-inch minimum free-draining granular backfill zone behind wall

Non-woven geotextile separator where required

Positive drainage away from wall

Prevent ponding behind or adjacent to wall

7.8 Embedment

Bottom of wall embedded 6 inches minimum below lower adjacent finished grade

7.9 Submittals

Submit through Projectmates prior to wall construction:

Field sketch / layout

Stone sample and/or photo reference

Mortar/grout color and finish

Epoxy anchoring product data

7.10 Detail Reference

Wall reconstruction shall be in accordance with the Limestone Retaining Wall Reconstruction Details included in the Contract Documents.

8. BID OPTION AWARD

The Owner reserves the right to:

Award the Base Bid only; or

Award the Base Bid plus Bid Option / Add Alternate No. 1 based on available funding and bid results.

9. QUALITY CONTROL AND ACCEPTANCE

All compaction shall be verified by a certified testing laboratory

Testing laboratory shall be retained by the Contractor

Submit testing lab qualifications for Owner review and approval

Final proofroll required prior to acceptance

Positive drainage required at all parking areas

Owner inspection required for final acceptance

Testing results shall be submitted and accepted prior to placement of subsequent work.

10. PROJECT ADMINISTRATION REQUIREMENTS

10.1 Projectmates

The Contractor shall use Projectmates for all project administration, including but not limited to:

Submittals

RFIs

Pay applications

Change order requests

Testing reports

Schedule updates

Closeout documentation

10.2 Required Unit Prices

Provide the following unit prices with the bid:

HMA: per square yard and/or ton

Flexible Base: per square yard, cubic yard, and/or ton

Undercut / Unsuitable Soil Removal and Replacement: per cubic yard

Concrete Curb: per linear foot

Thermoplastic Striping: per linear foot and per each symbol / arrow

10.3 Allowances

The Contractor shall carry all allowances identified in schedule of value at the stated amounts in their bid.

Use of allowances requires prior written Owner approval.

11. SWPPP / EROSION CONTROL / TEMPORARY CONTROLS

The Contractor shall provide all required:

SWPPP implementation (if applicable)

Erosion and sediment controls

Dust control

Stabilized construction entrance(s), if needed

Maintenance of erosion controls throughout construction

Temporary protection of disturbed areas until final stabilization

12. SAFETY / TEMPORARY FACILITIES / SITE CONTROL

The Contractor shall be responsible for:

OSHA compliance

Temporary sanitary facilities / portable toilets

Temporary water and power, if required

Barricades, cones, signage, and traffic control

Maintaining safe pedestrian and vehicle access

Protection of stockpiled materials and equipment at all times

The Owner assumes no responsibility for theft, vandalism, or weather damage to Contractor materials or equipment.

13. CLEANUP / FINAL CLEANING

The Contractor shall:

Keep the site clean throughout the project

Remove waste materials, spoils, debris, and packaging

Prevent loose materials from creating safety or drainage issues

Perform final cleanup at completion

At final completion, the site shall be left in a clean, safe, and usable condition acceptable to the Owner.

14. MINOR UNDERGROUND UTILITY ADJUSTMENTS

Minor field adjustments to existing underground utilities shall be considered incidental to the Work and may include limited alignment or elevation modifications necessary to complete the Work, provided such adjustments:

Do not exceed 5 linear feet horizontally

Do not exceed 12 inches vertically

Do not require replacement of major utility components

Do not require utility service rerouting

Do not require utility shutdowns without prior written approval

Do not require utility owner involvement

Any underground utility work beyond these limits shall be excluded unless specifically covered by an allowance or approved by written Change Order.

The Contractor shall be responsible for verifying the location of utilities prior to excavation and shall repair any damage to known or reasonably discoverable utilities at no additional cost to the Owner.

15. EXCLUSIONS

The following items are excluded unless specifically identified elsewhere in the Contract Documents:

Storm sewer installation

Asphalt paving for Road Base Parking 2, 3, and 4

Lighting or electrical work

Landscaping

Underground utility relocation, replacement, or modifications beyond the minor adjustment limits identified above