**Task Order No. 0X-XXXXX**

IDIQ Contract No. DTFH70-0X-D-000XX

# Project Name

The Federal Highway Administration (FHWA) is requesting a proposal from
xxxxxx, Inc. for Geotechnical Explorations at XXXXXXXXXXXXX National
Park as described below.

## PROJECT DESCRIPTION AND PURPOSE

The Federal Highway Administration is proposing to rehabilitate a 6 km
section of xxxxxxxxx State Route xxx (Park Route xx) from xxxxxx Creek
to xxxx Pass, as shown on the Vicinity Map. The proposed rehabilitation
involves resurfacing, minor grade revisions, subexcavations, masonry
retaining wall repair, and roadway shoulder stabilization. Geotechnical
explorations are required to define the existing pavement structure and
subgrade soils and characterize conditions at areas of minor slumps and
slides that are causing shoulder distress. FHWA geotechnical engineers
and designers will use exploration information to design the pavement
overlay and stabilization structures.

**SCOPE OF WORK**

Provide equipment and personnel to perform the explorations outlined
below. Prepare a report that presents the results of the explorations
and provide the deliverable items described herein.

The Geotechnical Consultant shall provide all necessary drilling
equipment, operators, field support, and flagging services to complete
the subsurface explorations. The Geotechnical Consultant shall provide a
qualified and experienced inspector for the logging of all explorations.
The inspector shall be a geologist, engineering geologist, or
geotechnical engineer with experience in remote locations and rock core
logging. The inspector shall be responsible for logging the borings and
coordinating the driller and flaggers required for the explorations. The
field location of explorations, proposed depths, types of sampling and
sampling interval will be as described later in this SOW or as otherwise
agreed to by representatives of the FHWA and the Geotechnical
Consultant.

Traffic control will only be required if the road is open to the public.
Usually, the road is opened to public traffic near the end of May.
However, it is anticipated that the road may be opened to public traffic
early this year. Cost estimates should include flagging services.

The Geotechnical Consultant is responsible for the transmittal of rock
core and soil samples to the FHWA office in Vancouver, WA. Project
explorations will commence at the direction of the FHWA in coordination
with the Geotechnical Consultant.

## LABORATORY TESTING OF SAMPLES

The testing of soil and rock samples obtained during the geotechnical
explorations will be performed by the FHWA. Laboratory testing shall
include index tests for classification and correlation purposes. Test
results will be provided to the Geotechnical Consultant in order to
assist in boring log preparation. Provide a completed FHWA laboratory
test form tabulating the requested laboratory tests. Allow six weeks for
laboratory testing.

## TASK 1 - EXPLORATIONS

Final boring logs shall be in a graphical format acceptable to the COTR.

### Borings:

> [Overburden Materials:]{.underline} Advance borings in overburden
> material with a hollow stem auger to refusal or to the bottom depth of
> the boring. The drill inspector shall: 1) record a log of conditions
> and materials encountered at each boring; 2) obtain Standard
> Penetration Tests (SPT\'s) at 1.5 m intervals; 3) place SPT samples in
> air-tight plastic baggies or glass jars; and, 4) label each sample
> using water-proof ink with the project name, boring number, sample
> number and depth, and blow count per 150 mm increment.
>
> [Bedrock or dense, un-augerable materials:]{.underline} Advance
> borings in material that cannot be augered using wire-line core
> drilling techniques to the bottom depth of the boring (HQ-3 core is
> preferred, NQ is acceptable). The drill inspector shall: 1) record a
> log of the core drilling; 2) place recovered core samples in [water
> resistant]{.underline} cardboard or corrugated plastic core boxes
> labeled with the project name, boring number, station and offset,
> depth interval, and box number; 3) separate core runs with blocks
> which identify the run number and depth; 4) take color photographs of
> the core in boxes; and 5) secure core boxes with fiberglass reinforced
> tape. Deliver core boxes to the FHWA Vancouver, WA office.

[Subgrade Sampling:]{.underline}

> The drill inspector is responsible for obtaining subgrade samples in
> accordance with the following method: Sampling shall begin by
> carefully augering through the pavement, if present, without
> disturbing the underlying base rock and hand excavating the pavement
> material to the top of the base rock. Loosen base rock with auger
> without mixing with underlying materials. Hand-excavate and place all
> base rock into sample bag(s). Hand-clean the base of hole so as not to
> mix base rock with underlying material. Carefully loosen underlying
> material with auger so as not to mix individual, distinct layers.
> Sample each distinct strata encountered to a minimum depth of 4 feet
> or to auger refusal. Obtain 100 pound samples in sand, silt and clay.
> Obtain 150 pound samples in predominantly gravel or cobble materials.
> Sample weight shall not exceed 70 pounds per bag. Addition sample
> material may be obtained from adjacent roadway cuts where it is
> similar to the material in the hole. Backfill the hole, compact the
> backfill, and patch the hole with a minimum of 4 inches of asphalt
> cold patch.

[The drill inspector shall be responsible for the following
tasks]{.underline}:

> A. Locate underground utilities prior to drilling. Call and coordinate
> with the required underground utility services and Park Service
> Maintenance personnel to locate the utilities at each boring and
> subgrade sample location. Field verify utility locations with the
> utility locator. Identify any impacts utility locations will have on
> exploration locations and relocate explorations impacted by the
> underground utilities.
>
> B. Coordinate boring explorations with the drilling and flagging
> subcontractors. Field review the boring locations prior to beginning
> the explorations and relocate borings as required. Boring locations
> will be marked with orange spray paint on the road and lath with blue
> and red ribbon on the adjacent shoulder. Surveyed station stakes are
> located at 50 m intervals. Many of the survey stakes are likely to be
> missing.
>
> C. Record subsurface conditions and obtain samples at each boring
> exploration. Each boring log will include:
>
> 1\. Exploration number and approximate station and offset referenced
> to the preliminary alignment and existing centerline (tape
> measurements are adequate).
>
> 2\. A field description of the materials encountered in accordance
> with the USCS soil classification system. Estimated size range of
> boulders, if encountered.
>
> 3\. An estimation of the relative density of the granular materials
> (very loose to very dense) and the consistency of fine-grained soils
> (very soft to hard).
>
> 4\. Notes regarding the reaction of the drill or excavator and other
> information and observations provided by the operator.
>
> 5\. Depth to groundwater if encountered. Note depth and extent of
> seepage.
>
> 6\. Depths of any changes in material.
>
> 7\. Boring logs shall include sample depths, SPT blow counts, core run
> number, depth interval, percent recovery and RQD.
>
> D. Backfill borings. Slope ground to natural contours at borings
> located outside the pavement. Place at minimum of 100 mm of asphalt
> patch at the surface of borings located in the pavement. Remove all
> trash from site and debris from road. Make a reasonable effort to
> restore the site to its' pre-boring condition.

E. Photograph core in core boxes prior to shipment to Vancouver.

> F. Place a 4-foot lath with red and blue flagging at each completed
> boring and test pit. Mark lath with boring number.

## TASK 2 - DELIVERABLES

> A. Weekly progress reports during the explorations that will be
> delivered to the COTR by the end of the week following the reporting
> period. Progress reports will include:
>
> 1\. A completed WFLHD Daily Drill Inspectors Report (copy attached).
>
> 2\. A diary of daily activities broken down into half-hour increments.
> The diary shall include all exploration activities, all personnel on
> project, and drill inspector hours, supplies and other indirect costs.
>
> B. Deliver SPT samples and core samples to the FHWA office in
> Vancouver, WA.
>
> C. One draft copy of the report for FHWA review.
>
> D. One unbound and three bound copies of the final report, which
> presents the results of the explorations and includes:

1.  A brief description of the field procedure and equipment.

2.  Project Maps showing boring locations (provided by FHWA).

3.  Boring logs.

4.  Core photographs.

5.  Laboratory Test Results (provided by FHWA).

## SCHEDULE

The target date for beginning the explorations is April 15, 2003. Allow
six weeks for FHWA Laboratory Testing. Draft boring logs are due June
21, 2003. Allow two weeks for FHWA review of draft logs. The final
report is due July 18, 2003. The final completion date for all work
under this Task Order is October 1, 2003.

## PAYMENT

Payment will be made on a Firm Fixed Price basis per Article V.
CONSIDERATION AND PAYMENT, subparagraph C. in IDIQ Contract No.
DTFH70-0x-D-000xx.

## CONTACT

The Contracting Officer's Technical Representative for this Task Order
is:

xxxxx, Geotechnical Engineer, (360) 619-xxxx

Federal Highway Administration

610 East Fifth Street

Vancouver, WA 98661

In Mr. xxx's absence, contact Mr. xxxxx, head of the Geotechnical
Section, at (360) 619-xxxx.

The following attachments were sent under separate cover:

Plans with Vicinity Map and Boring Locations

Daily Drillers Report Form

FHWA Geotechnical Request for Laboratory Tests form

+-----------------------+----------------------+----------------------+
| **PROPOSED BORINGS**  |                      |                      |
+=======================+======================+======================+
| #### STATION          | #### OFFSET          | #### DEPTH           |
|                       |                      |                      |
|                       | #### meters          | #### meters          |
+-----------------------+----------------------+----------------------+
| 9+040                 | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 9+120                 | ##### 4 LT           | 10                   |
+-----------------------+----------------------+----------------------+
| 9+260                 | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 9+420                 | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 9+660                 | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 9+920                 | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 10+100                | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 10+640                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 10+860                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 11+120                | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 11+200                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 11+300                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 11+470                | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 11+550                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 12+020                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 12+120                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 12+260                | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 12+320                | 4 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 12+360                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 12+430                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 12+770                | 1 LT                 | 10                   |
+-----------------------+----------------------+----------------------+
| 12+940                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 13+200                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| 14+220                | 4 LT                 | 8                    |
+-----------------------+----------------------+----------------------+
| ##                    |                      |                      |
| #### Subgrade Borings |                      |                      |
+-----------------------+----------------------+----------------------+
| 8+800                 | RT Lane              | 1.2                  |
+-----------------------+----------------------+----------------------+
| 9+800                 | ##### RT Lane        | 1.2                  |
+-----------------------+----------------------+----------------------+
| 10+800                | RT Lane              | 1.2                  |
+-----------------------+----------------------+----------------------+
| 11+800                | RT Lane              | 1.2                  |
+-----------------------+----------------------+----------------------+
| 13+080                | RT Lane              | 1.2                  |
+-----------------------+----------------------+----------------------+
| 14+020                | RT Lane              | 1.2                  |
+-----------------------+----------------------+----------------------+