**[SECTION C DESCRIPTION/SPECIFICATION/WORK STATEMENT]{.underline}**

C.1 General Requirements

The Contracted Organization, hereafter Contractor, shall furnish all
facilities, labor, equipment and materials to provide the goods and
services in accordance with the terms and conditions herein and the
specifications set forth below.

The contractor must have a currently valid license issued by the
Commonwealth of Maryland, hereafter Maryland or State of Maryland, to
drill in Maryland. Drilling shall be supervised by a Master Well
Driller, also holding a currently valid license in Maryland. A copy of
all relevant drilling licenses must be furnished to the Contracting
Officer, hereafter CO, before start of work.

Permissions and permits to drill at each site, as well as the drilling
location(s) within each site, and clearance with Maryland Miss Utility
to indicate the locations are free of underground utilities, will be
obtained by the Contracting Agency, and copies of these documents
provided to the Contractor by the Technical Liaison or TL before
drilling commences at any site.

The Contractor will conduct contracted drilling and well-construction
activities in each drilling site and at each drilling location site in
accordance with the general requirements for the installation of water
monitoring wells as specified by the State of Maryland, and the specific
terms and conditions herein and specifications set forth in Section B
and below.

The Contractor will collaborate to provide or enable the collection of
data and information by the Technical Liaison, hereafter TL, during the
drilling of each borehole and construction of each well at a site. In
providing depth-related data to the TL, the Contractor will state all
depth measurements relative to the original ground surface (OGS)
established by the Contractor driller at time the drill rig is set up.

Following drilling and well construction activities at a site, the
Contractor will provide a legible and complete Maryland Well Completion
Report or Water-Well Abandonment-Sealing Report Form to the Maryland
Department of Environment, and provide a complete and legible Owner copy
of the appropriate document above to the TL, within 45 days of
completing or attempting to complete the drilling of each borehole or
construction of each well at a drilling site. In addition,

C.2 Location of Wells

This contract calls for two boreholes to be drilled and constructed as
water-level monitoring wells by the Contractor at each of approximately
20 sites in the Gwynns Falls Watershed (GFW) near Baltimore, Maryland
(Figure 1, Figure 2, and Table 1). The first monitoring well at each
site is to be completed in the bedrock. If in drilling the bedrock well
it is evident that saturated conditions occur in the saprolite overlying
bedrock, a second monitoring well is to be completed in the saprolite in
close proximity (within 5-6 feet (ft) or 1.2 -1.8 m) of the bedrock
monitoring well.

Approximately 30 sites -- 20 primary and 10 secondary---have been
identified as potential drilling sites. Primary drilling sites will be
used first. Few secondary sites will be incorporated if primary sites
become unavailable or are found to be unsuitable upon drilling for the
construction of monitoring wells, and sufficient contracted resources
remain to drill and construct wells at these secondary sites.

C.3 Purpose and Scope

The current 20 primary sites were chosen to provide near real time,
hereafter continuous, ground-water elevation data chiefly in two
subbasins of the GWF---Dead Run and Delight (Figure 2). These two
watersheds reflect different land use settings (urban to forest) and
bedrock types, with the latter possible being Gabbro, Potomac Group,
Ultramafic, or Schist, or other granitic or metamorphic formations.

The chief purpose of the two boreholes at each site is to construct
monitoring wells to obtain continuous independent water-level
measurements in the local bedrock and, if apparent, in the saprolite
overlying that bedrock. The monitoring wells also are to be constructed
to potentially enable the collection of water-quality samples from each
geologic stratum.

Monitoring for water levels does not require wells with high yields. A
yield of a few tenths of a gallon per minute likely is sufficient.
Monitoring wells, however also should be deep enough in each geologic
stratum (saprolite or underlying bedrock) to possibly provide
water-level data throughout the year.

At each primary site, the first monitoring well is to be completed in
the bedrock, hereafter referred to as the deep bedrock monitoring well.
Depending upon lithologic and hydrologic conditions encountered during
the drilling of this bedrock well, a second shallow monitoring well
could be completed in the unconsolidated material (saprolite) overlying
the bedrock.

A total of approximately 840 feet of (cased) borehole in overlying
saprolite (Section B, CLIN 009), and approximately 1,500 feet of open
borehole in the underlying bedrock (Section B, CLIN 015 ) are to be used
to guide the resources required to construct the 20 deep bedrock
monitoring wells. These total drilling depths reflect:

\(a\) an estimated average of 40 feet of overburden from land surface to
continuous bedrock, with the latter defined by encountering two feet of
continuous bedrock, which makes the average cased portion of this upper
segment of the deep borehole 42 feet below ground surface, and

\(b\) an estimated average depth of 75 feet for the underlying open
bedrock portion of this deep monitoring borehole. The actual thickness
of the upper soil-saprolite stratum is unknown at each primary site but
could differ from a few feet to a hundred feet (Figure 3). In addition,
the depth to obtain sufficient water yield for water-level measurements
throughout the year in the underlying bedrock at a given primary site
also are highly uncertain and could range from a few feet to a hundred
or more feet.

In addition, the accurate measurement of bedrock borehole yield requires
the upper shallow segment of this borehole in the saprolite be cased to
prevent the direct entry of water. Depending on the conditions
encountered in drilling this upper shallow segment of the borehole, this
casing is assumed to either be Schedule 40 polyvinyl chloride at 15
sites, or A32B steel at 5 sites.

Given the above, the requirements for the drilling and construction of
the approximately 20 deep bedrock monitoring wells are described in
detail (Section B, CLIN's 008 through CLIN 023) and summarized as
follows:

**Deep Borehole Monitoring Wells**

Given a total drilling footage of 2,340 feet:

\(A\) Drill approximately 15 boreholes and construct monitoring wells as
follows:

(1) Using air-rotary rig, drill a 10-inch (24.5.5cm) diameter hole 2-ft
    (0.61 m) into competent bedrock for each of 15 boreholes, assuming
    on average this is 42 ft (12.8 m) from ground surface.

(2) Install (seating and centering) approximately 45 feet (13.7 m) of
    Schedule 40 (6.9-in 17.5-cm OD) PVC glued joint socket casing in
    each of the 15 boreholes. Bentonite grout 2-ft (0.61-m) annulus
    between bedrock and casing with tremie pipe in each of 15 boreholes.

(3) At each of 15 boreholes, and using air rotary rig placed inside the
    casing, drill a 6.125-in (15.6 cm) diameter borehole in bedrock,
    blow water from borehole, and drill until water encountered or 75 ft
    (22.9). Following guidance by TL, continue drilling to obtain
    recovery yield of a few tenths of a gallon per minute, or abandon
    borehole. Assume suitable recovery is accomplished on average
    approximately 75 ft (22.9 m) feet into bedrock or 115 ft (35 m) from
    ground surface).

(4) Develop each borehole after completion of drilling by blowing with
    air pressure for approximately 0.5-0.75 hour. Recheck recovery after
    development.

(5) Cover each PVC casing with thin-walled PVC cap, grout seal annulus
    with 94:4:54 cement: bentonite (:water) mixture by weight using
    tremie pipe between the geologic formation and the PVC casing, from
    the top of the bentonite seal at bedrock to 1.5 ft (0.45 m) below
    original ground surface.

(6) Install (and center) a 5-ft 8.626-in (21.9 cm) OD A32B steel-weld
    (protective) casing over (and around) the above-ground section of
    PVC at each borehole, with the bottom end of protective casing on
    top of cement-bentonite, and the top of the protective casing above
    the top of the capped PVC casing.

(7) Install cement surface seal in each borehole, with tamping to
    eliminate bridging, in the annulus between the PVC casing and the
    surrounding protective steel casing, and in the annulus between
    exterior of steel protective casing and geologic formation, in each
    case from the top of the cement-bentonite seal until flush with the
    original ground surface.

(8) Install a heavy-duty slip-on steel 8.626-in (21.9 cm) ID cap with
    welded vertical locking tab over each protective steel casing, and
    weld a corresponding and similar heavy-duty steel paddle lock tab
    onto the side of the protective steel casing, and lock well casing
    with No 5 Master Lock provided by TL.

> \(B\) Drill approximately 5 boreholes and construct monitoring wells,
> assuming similar saprolite thickness but more restrictive
> conditions---caving or pocket formation, or other borehole instability
> require a strong casing, as follows:

(9) Using air-rotary rig, drill a 10-inch (24.5.5cm) diameter hole 2-ft
    (0.61 m) into competent bedrock for each of 5 boreholes, assuming on
    average this is 42 ft (12.8 m) from ground surface.

(10) Install (seating and centering) approximately 45 feet (13.7 m) of
     A32B 6.625-in (15.9 cm) OD black welded joint steel casing in each
     of the 5 boreholes. Bentonite grout 2-ft (0.61-m) annulus between
     bedrock and casing with tremie pipe in each of the 5 boreholes.

(11) At each of the 5 boreholes, and using air rotary rig placed inside
     the casing, drill a 6.125-in (15.6 cm) diameter borehole in
     bedrock, blow water from borehole, and drill until water
     encountered or 75 ft (22.9). Following guidance by TL, continue
     drilling to obtain recovery yield of a few tenths of a gallon per
     minute, or abandon borehole. Assume suitable recovery is
     accomplished on average approximately 75 ft (22.9 m) feet into
     bedrock or 115 ft (35 m) from ground surface).

(12) Develop each borehole after completion of drilling by blowing with
     air pressure for approximately 0.5-0.75 hour. Recheck recovery
     after development.

(13) Cover each steel casing with a heavy-duty slip-on steel 6.625-in
     (15.9 cm) ID cap with welded vertical heavy-duty locking tab, and
     grout seal annulus with 94:4:54 cement: bentonite (:water) mixture
     by weight using tremie pipe between the geologic formation and the
     PVC casing, from the top of the bentonite seal at bedrock to 1.5 ft
     (0.45 m) below original ground surface.

(14) Install cement surface seal in each borehole, with tamping to
     eliminate bridging, in the annulus between the steel casing and
     geologic formation, from the top of the cement-bentonite seal until
     flush with the original ground surface.

(15) Weld a corresponding and similar heavy-duty steel paddle lock tab
     onto the side of the protective steel casing, and lock well casing
     with No 5 Master Lock provided by TL.

**Shallow (Saprolite) Monitoring Wells**

Given a total drilling footage of 840 feet, assuming that lithologic and
water-yield information obtained from drilling the first borehole
saprolite segment, warrants a second shallow borehole, and that the
saprolite stratum is approximately 40ft (12.2 m) thick, the second
(shallowest) borehole is to be drilled approximately 5-6 ft (1.5-1.8m)
from the Deep Bedrock Monitoring Well provide, as follows:

\(A\) Drill approximately 17 boreholes and construct them as monitoring
wells as follows:

(1) Using air-rotary rig, drill a 8-inch (20.3 cm) diameter hole 2-ft
    (0.61 m) into competent bedrock for each of 17 boreholes, assuming
    on average this is 42 ft (12.8 m) from ground surface.

(2) Install (seating and centering) a 45-ft (13.7 m) string of Schedule
    40 4.5-in (11.4-cm) OD flush joint threaded PVC components in each
    of the 17 boreholes: 2-ft (0.6 m) riser with end cap, followed by
    10-ft (3.0-m) 0.02 in (0.05 cm) slotted screen, followed by 33-ft
    (10.1-m) casing, with flat, thin-walled 4.5-in (11.4cm) cap. (Note:
    Scale the string to actual depth of saprolite stratum, if depth from
    ground surface to competent bedrock is 15 feet, use 5-ft (1.5-m)
    screen, and 10-ft (3.-m) casing.

(3) Use tremie pipe to install the following between each string
    component and saprolite formation:

    a.  Bentonite slurry (chips and water) if borehole dry, or coated
        bentonite pellets and no water for standing water in borehole,
        between bedrock and 2ft (0.6m) riser;

    b.  Filter pack #2 sand for 12-ft (3.7 m) from bottom of screen
        (bedrock surface or top of bentonite seal) to 2 ft (0.6m) above
        top of screen,

    c.  Bentonite slurry if annulus dry, or coated bentonite pellets and
        no water for standing water, in the 2ft portion of well from top
        of filter pack; and

    d.  94:4:54 cement: bentonite (:water) mixture by weight for 25.4-ft
        (7.74-m) from top of bentonite seal to 1.5 ft (0.46 m) below
        original ground surface.

(4) For each of 17 boreholes, install (and center) a 5 ft (1.5 m) 6.625
    in (16.8 cm) OD A53B black steel protective casing over (and around)
    the above-ground section of PVC at each borehole, with the bottom
    end of protective casing on top of cement-bentonite, and the top of
    the protective casing above the top of the capped PVC casing.

(5) Install cement surface seal in each borehole, with tamping to
    eliminate bridging, in the annulus between the PVC casing and the
    surrounding protective steel casing, and in the annulus between
    exterior of steel protective casing and geologic formation, in each
    case from the top of the cement-bentonite seal until flush with the
    original ground surface.

(6) Install a heavy-duty slip-on steel 6.625-in (16.8 cm) ID cap with
    welded vertical locking tab over each protective steel casing, and
    weld a corresponding and similar heavy-duty steel paddle lock tab
    onto the side of the protective steel casing, and lock well casing
    with No 5 Master Lock provided by TL.

\(B\) Drill approximately 3 boreholes to construct monitoring wells
assuming saprolite conditions---caving or pocket formation, or other
borehole instability require a stronger casing, as follows:

(7) Using air-rotary rig, drill a 8-inch (20.3 cm) diameter hole 2-ft
    (0.61 m) into competent bedrock for each of 3 boreholes, assuming on
    average this is 42 ft (12.8 m) from ground surface.

(8) Install (seating and centering) a 45-ft (13.7 m) string of Schedule
    40 4.5-in (11.4-cm) OD flush joint threaded Stainless Steel
    components in each of the 3 boreholes: 2-ft (0.6 m) riser with end
    cap, followed by 10-ft (3.0-m) 0.02 in (0.05 cm) slotted screen,
    followed by 33-ft (10.1-m) casing, but with a flat, thin-walled
    Schedule 40 PVC 4.5-in (11.4cm) ID cap. (Note: Scale string to
    actual depth of saprolite stratum. For example, if depth from ground
    surface to competent bedrock is 15 feet, use 5-ft (1.5-m) screen,
    and 10-ft (3.-m) casing.

(9) Use tremie pipe to install the following between each string
    component and saprolite formation:

    a.  Bentonite slurry (chips and water) if borehole dry, or coated
        bentonite pellets and no water for standing water in borehole,
        between bedrock and 2ft (0.6m) riser;

    b.  Filter pack #2 sand for 12-ft (3.7 m) from bottom of screen
        (bedrock surface or top of bentonite seal) to 2 ft (0.6m) above
        top of screen,

    c.  Bentonite slurry if annulus dry, or coated bentonite pellets and
        no water for standing water, in the 2ft portion of well from top
        of filter pack; and

    d.  94:4:54 cement: bentonite (:water) mixture by weight for 25.4-ft
        (7.74-m) from top of bentonite seal to 1.5 ft (0.46 m) below
        original ground surface.

(10) For each of 3 boreholes, install (and center) a 5 ft (1.5 m) 6.625
     in (16.8 cm) OD A53B black steel protective casing over (and
     around) the above-ground section of PVC at each borehole, with the
     bottom end of protective casing on top of cement-bentonite, and the
     top of the protective casing above the top of the capped PVC
     casing.

(11) Install cement surface seal in each borehole, with tamping to
     eliminate bridging, in the annulus between the PVC casing and the
     surrounding protective steel casing, and in the annulus between
     exterior of steel protective casing and geologic formation, in each
     case from the top of the cement-bentonite seal until flush with the
     original ground surface.

(12) Install a heavy-duty slip-on steel 6.625-in (16.8 cm) ID cap with
     welded vertical locking tab over each protective steel casing, and
     weld a corresponding and similar heavy-duty steel paddle lock tab
     onto the side of the protective steel casing, and lock well casing
     with No 5 Master Lock provided by TL.

C.4 Local Geologic Conditions

Piedmont lowland areas, such as the GWF, can have complex and highly
variable bedrock and surficial (saprolite) geology. Potential geologic
formations at the 20 priority sites include Gabbro, Potomac Group,
Ultramafic, or Schist, or other granitic or metamorphic formations. Also
the two GFW subbasins targeted by the primary drilling sites reflect
notable differences in land use (extent of urban and forest cover), and
thus, in natural recharge because of impervious cover, and possibly in
artificial recharge due to urban underground infrastructure, such as
leaky older storm and sewer drains. Therefore, actual geologic and
hydrologic (ground-water) conditions among the 20 primary sites chosen
for drilling likely differ, and until drilling occurs, are uncertain.
Hence, under the contracted resources, boreholes could be drilled and
wells constructed as planned at all 20 primary sites, or at all 20
primary sites and a few additional secondary sites, or at most but not
all of the initial 20 sites. The Contractor shall be held as having
examined the vicinity of the 20 primary drilling sites to acquaint
him/her with local conditions related to gaining access, drilling, and
departing each site.

Preliminary data indicate depth to bedrock from the land surface and
through the unconsolidated (generally saprolite) strata could differ
among the 20 priority sites from a few feet to a hundred feet or more
(Figure 3). Depth to sufficient water in the bedrock for water-level
monitoring also could differ markedly among theses sites. Because of the
potentially high variability in depth to bedrock, depth to water in
bedrock, and potential well yield in either saprolite or bedrock, and
the uncertainty in the actual conditions at each primary site, "average"
values and total feet of drilling in saprolite and bedrock drilling are
provided to guide the scope of work elements (See C.3 above).

C.5 Equipment and Personnel to be Furnished by the Contractor

The Contractor shall provide one complete drilling unit capable of air
rotary drilling, and have one back-up unit to avoid prolonged down time.
The Contractor shall furnish all drill pipe and bits used for this
contract. The Contractor shall provide all tools, supplies, drilling
equipment, accessories, water for drilling, shovels, power, lighting,
controls, discharge pipe, compressor, experienced personnel, safety
clothing and equipment, and all other items necessary to conduct
efficient and satisfactory drilling, sampling, setting of casing, and
completion of monitoring wells as specified in this contract. The
drilling units shall be in good condition and have the capacity to drill
a hole to a depth of 400 feet (122 m). The air compressor on the rig
must be of sufficient capacity to recover drill cuttings as required for
accurate sampling of geologic materials. The Contractor shall provide
all materials and services necessary for satisfactory completion of all
work required under these specifications.

The contractor shall provide a steam cleaning machine to clean drill
bits and drill stem between drilling each borehole and between cleaning
out each existing borehole.

The Contractor shall provide all Schedule 40 (6.9-in 17.5-cm) OD PVC
glued joint socket casing, 8.625-in (21.9 cm) OD and 6.625-in (16.8-cm)
OD A32B black welded joint steel casing, and Schedule 40 4.5 in
(11.4-cm) flush joint threaded Stainless Steel casing; 2ft (0.61 m)
Schedule 40 (6.9-in 17.5-cm) glued joint socket PVC and (4.5-in 11.4-cm)
flush joint threaded Stainless Steel risers, and 5-10 ft (1.5-3.0 m)
0.02-in (0.05 cm) slotted Schedule 40 (6.9-in 17.5-cm) glued joint
socket PVC and (4.5-in 11.4-cm) flush joint threaded Stainless Steel
screens. The Contractor shall provide all thin-walled 6.9-in (17.5-cm)
ID and 4.5 in (11.4 cm) ID PVC, 8.626-in (21.9 cm) ID and 6.625-in
(16.8-cm) ID heavy-walled steel, slip-on top or end caps, with the steel
caps for protective casings and these casings having heaving duty steel
vertical lock tabs. The casing and well screen may be of any reasonable
length for safe and efficient handling. All the above well construction
components must be undamaged, not previously used, and with no interior
cracks or snags inside that could obstruct lowering experimental
apparatus into the well, or lead to leakage into the well or borehole
below. Each length of casing, well screen, and riser to be inserted into
a drill hole will be inspected by the Contractor to insure that these
conditions are met. The Government Agency will not be responsible for
any cost or delay due to casing or well screen that is faulty or that
fails under the service to which it is subjected or called for in these
specifications.

The Contractor shall provide one complete grout injecting machine
capable of injecting cement grout through a tremie pipe to a depth of
400 feet (122 m) below land surface. The Contractor shall provide all
bentonite, cement grout, and filter pack sand. The Contractor shall
provide all water for drilling. All the water provided shall be potable.
Potable water likely is available at most but not all sites. If
unavailable the Contractor shall provide, and transport in clean
containers that are free of all hydrocarbons. The Contractor shall be
responsible for both the transportation of the water to the site and its
storage at the site. The Government Agency will not be responsible for
any cost or delay due to the driller's inability to supply water for
drilling. However, the TL will assist in locating a clean water supply
within reasonable distance from the drilling location at each site.

The Contractor shall provide tables, space on truck bed, or drill pipe
and casing standards for keeping drill bits, tools, drill pipe, casing,
and well screen off the ground during drilling and well construction
operations. In addition, the Contractor shall provide a steam cleaner
and spraying equipment for cleaning drilling tools.

The Contractor shall maintain all equipment in good operating condition
during the life of the contract. In the event that the equipment, judged
by work completed, and the specifications in clause C.5, is considered
unsatisfactory by the TL, the Contractor shall be notified in writing in
accordance with the clause in section E, Inspection of Services\--Fixed
Prices. The Contractor shall then within the time specified in such
notice (generally 10 days) replace or repair the unsatisfactory
equipment.

C.6 Equipment to be Furnished by the Government Agency

The following Government furnished materials and equipment will be
available during drilling, development, and testing of the wells:

\(1\) Bags for collecting geologic samples, and

\(2\) Padlocks

C.7 Drilling Procedure, Sampling. Well Casing. and Well Construction

\(a\) The boreholes shall be drilled by equipment as described in these
specifications to depths determined by the TL as drilling progresses,
but average out and for the most be within the ranges given in previous
Section B and above. Each borehole will be drilled by the air rotary
drilling method. Because this is in part n exploratory program as stated
in section C.1, the exact depths cannot be specified before drilling.

\(b\) Deep borehole is drilled first, shallow borehole is drilled
second, 5-6ft (1.5-1.8m) from deep borehole and provided information
obtained from deep borehole warrants drilling shallow borehole as
determined by TL. Each monitoring well shall be drilled in the manner
described in Section B and in brief in C.3.

\(c\) If needed, drilling in the unsaturated zone can be completed by
adding water to the borehole to facilitate drilling. However, attempts
at drilling only with air to get the returns to land surface must be
exhausted before water can be added. After sufficient water for drilling
is encountered in the aquifer, no water will be added to the borehole
from the land surface. Water can only be added to the test hole with
permission by the TL and by adhering to the following stipulations:

\(1\) All attempts to drill with air must be documented by the
Contractor and documentation made why it was necessary to add water.

\(2\) When water is added, the driller shall provide potable water that
has been transported and stored in tanks that are clean and free from
all hydrocarbons.

\(3\) No other substance, such as synthetic polymers, shall be added to
the water.

\(e\) During drilling, and with the full assistance of the Contractor, a
composite sample of the drill cuttings for every 5-foot (1.5 m) interval
and/or at each color change of each borehole shall be collected by the
TL.

\(f\) Lithologic sampling and recovery of borehole yield will be made as
indicated in C.8 (below). The Contractor shall provide accurate
information on depth of lithologic changes, depth of water occurrence
zones, and yield of water following borehole dewatering.
Semi-quantitative observations of flow will be made and recorded during
drilling by the Contractor.

\(g\) Measurements of the amount of hole drilled, supplies, and services
for which payment shall be made, shall be logged by the Contractor and
corroborated by the TL daily. In case of dispute, the TL shall be
entitled to make measurements at any time with the it's own equipment
with no extra cost accruing to the Government for standby time.

\(h\) No oil or grease shall be introduced into the drill hole for
lubrication of drilling bits or other equipment.

> C.8 Geologic Samples and Various Logs
>
> At each site, the TL will collect samples of the drill cuttings and
> place them in bags furnished by the TL (Section B, CLIN's 010, 016,
> and 025). Collaborative assistance from the Contractor is required as
> described in Section B. The Contractor shall take the steps necessary
> to insure that each sample collected is representative of the
> formation materials for the interval sampled and that for each sample
> an accurate (to nearest foot) depth below the original ground surface
> is obtained. All drilling shall proceed at a rate sufficiently slow to
> insure accurate sampling of the desired depth, to obtain the best
> quality geologic samples.
>
> At each site, the Contractor will provide the TL depths to the
> apparent occurrence of water during drilling, or recovery depths to
> water after dewatering a borehole or well, below the original ground
> surface (Section B, CLIN 010, 011, 015, 016, 017, and 025). The
> Contractor shall take the steps necessary to insure that each depth is
> representative of the occurrence or level of water and that each depth
> is accurate (to nearest inch) depth below the original land surface.
> All drilling shall proceed at a rate sufficiently slow to insure
> accurate depth, to obtain the best quality depth to occurrence or of
> water level data.
>
> In addition, the Contractor will ensure his/her driller
>
> \(a\) Carefully and accurately keep a log of time with descriptive
> notes of depth, notations of the type of bit and drilling method
> employed and any changes made, as well as the time period, depth, and
> reason for all drilling stoppages. All work (including that designated
> in this contract or requested by the TL, shall be documented by the
> Contractor.
>
> \(c\) Carefully and accurately keep a log with descriptive notes of
> depth, drilling conditions, geologic unit, depth of water-bearing
> zones, and recovery yields.
>
> Copies these driller log shall be furnished by the driller to the TL
> upon completion of each borehole.
>
> C.9 Well Capping
>
> Upon completion of each well, the Contractor shall install a removable
> cap (Section B, CLIN 018), or removable locking cap (CLIN 018), on
> each monitoring well; and if installed, on outer protective steel
> casings (CLIN 022 and CLIN 026) in accordance with the type and
> diameter of the casing. The padlocks for the locking caps will be
> provided by the TL.
>
> C.10 Abandoned Hole
>
> Any borehole or constructed well that does not satisfy the
> requirements herein described, and that cannot be made acceptable,
> shall be declared abandon (Section B). If the TL determines that a
> hole is lost due to reasons within the control of the Contractor,
> he/she will immediately notify the Contractor, in writing, of his/her
> decision and order the borehole abandoned in accordance with FAR
> 52.249-8 Default, and for the Contractor to move to the next scheduled
> hole. If any borehole or constructed well is declared abandoned due to
> reasons within control of the Contractor, no payment for the borehole
> or constructed well be made by the Government Agency for any part of
> the drilling or well construction at that hole. The abandoned borehole
> or well shall be addressed by the Contractor at his/her expense,
> abandon procedures will be followed in accordance with regulations of
> the State of Maryland regarding borehole or well abandonment, and a
> legible and complete Maryland Well Completion Report or Water-Well
> Abandonment-Sealing Report Form be sent to the Maryland Department of
> Environment within 45 days of the abandonment. In addition, a legible
> and complete Contractor driller's log and record shall be submitted to
> the TL upon completion of Contractor activity at the site, and a
> legible and complete Owner Copy of the Maryland Well Completion Report
> or Water-Well Abandonment-Sealing Report Form, will be provided by the
> Contractor, within 45 days of the abandonment. Salvageable material
> furnished by the Contractor shall remain his/her property.
>
> C.11 Authorized Drilling Cessation
>
> In the event the depth as specified by the TL cannot be achieved for
> any individual borehole due to unforeseen geologic or hydrologic
> conditions, such as collapsing beds, the Contractor will not be
> required to continue drilling provided the Contractor contact the TL
> immediately upon detection of the problems and provided the TL
> determines that the Contractor is not at fault. The Contractor shall
> be paid in full for footage drilled in accordance with Section B, CLIN
> 009 and possibly CLIN 015, or CLIN 024. Although the borehole is
> abandoned, a legible and complete Contractor driller's log and record
> shall be provided to the TL upon completion of Contractor activity at
> the site, and a legible and complete Owner Copy of the Maryland
> Water-Well Abandonment-Sealing Report Form, will be provided shall be
> provided to the TL within 45 days of the abandonment.

C.12 Mobilization and Demobilization

> The Contractor is responsible for all logistical support including
> mobilization (Section B, CLIN 001 through CLIN 003) from his/her home
> base, to the GFW area, among and between drilling sites associated
> with the GWF, and within a GWF site the drilling location, and the
> demobilization from any GWF drill location, site, and from the GWF
> back to home base.

C.13 Representative of Contractor

> The Contractor shall have a foreman or driller, experienced with the
> drilling equipment and methods required by the specifications and with
> full authority to act for the Contractor in directing all field
> operations, constantly in charge of the work at the drill sites when
> the work is underway.

C.14 Site Preservation and Restoration

> Most primary and secondary sites are readily accessible public or
> private lands. The drilling locations chosen also generally are
> accessible, but the Contractor will have limited to ample maneuvering
> space for facilities, equipment, and materials. The Contractor shall
> be held as having examined the vicinity of at least each primary
> drilling site to acquaint him/herself with local conditions affecting
> access, drilling, and departure from each site. If on inspection of
> the sites, the prospective Contractor determines that there is not
> sufficient cleared area for efficient operations, he shall notify the
> TL before mobilization of equipment. Contractor will obtain approval
> from TL before trimming or removing vegetation or otherwise altering
> landscape to enter, operate within, or depart from a site.
>
> Once mobilized, the Contractor is responsible for any damage to
> structures, grounds, and natural environment between, around, and
> within the sites resulting from his/her entry, operating within, or
> departing from a site. The Contractor will take reasonable and
> appropriate measures to protect persons, structures, grounds, and
> natural environment from damage. It is anticipated the Contractor will
> confine its operations to the drilling location identified by the TL
> at each site, and employ equipment and methods to avoid damage
> entering or departing site, or during operations on site---such as
> portable and temporary trash bins, work platforms, protective ground
> pads or covers, and support timbers and pallets for heavy vehicles and
> materials. For example, cuttings or fines that appear to consist
> chiefly of fill material could be encountered during the initial
> drilling of each borehole. The contractor should anticipate their
> occurrence, and plan and act to temporarily place initial borehole
> materials in filter bags or on impervious coverings separate from
> subsequent natural cuttings or fines. If fill is encountered that
> clearly appears to be unusual or potentially contaminated, the
> contractor is to notify and consult with the TL immediately.
>
> At the completion of drilling and before acceptance by the TL, the
> site shall be restored by the Contractor as nearly as possible to its
> previous condition. Therefore all Contractor facilities, equipment,
> and materials shall be removed. The Contractor will fill any pits,
> ruts, and other holes caused when entering, operating in, or departing
> site. Exposed terrain related to above will be graded, reseeded,
> watered, and mulched, and any other obvious and necessary work will be
> done by the Contractor to restore the site to pre-drilling conditions.
> All trash, debris, drill cuttings, soil, fill, mud, and spilled grout,
> seal, and other materials from drilling will be removed and disposed
> of offsite by the Contractor. Oil or any nonsoluble liquids or
> materials shall not be drained onto or left at the drilling site. The
> work specified in this contract shall not be considered complete, nor
> will the invoice for the work be approved, until the site restoration
> is complete to the satisfaction of the TL. Time for the initial site
> cleanup shall be included in the footage charge. Time and materials
> required for repeated site cleanup because of failure by Contractor to
> perform actions indicated by TL will not be billable to the Government
> Agency but be born by the Contractor. Additional charges will not be
> paid for setting up equipment or for loading drill pipe, bits, and
> other tools and equipment after completion of a well, in preparation
> for moving from the drilling site. Additional charges will not be paid
> for changing drilling and reaming bits; this cost shall be included in
> the cost of drilling and reaming.
>
> C.15 Work Schedule
>
> All drilling shall be done during daylight hours, Monday through
> Friday, excluding Federal holidays, and with a maximum 8-hour working
> day. At the beginning of the work, the Contractor and the TL shall
> mutually agree on the schedule of working hours so that the TL can be
> present during working hours.
>
> C.16 Responsibility for Damage to Contractor's Equipment
>
> The Contractor shall assume all responsibility for damage to his
> equipment, whether from elements, from vandalism, from operation under
> this contract, or from movement to, from, or between drilling sites.
> Onsite, it is assumed Contractor will take reasonable measures, such
> as signage, cones, barriers, and/or fences to restrict ready access to
> the drilling location and post warnings to public and property
> occupants to refrain from entering the drilling location.
>
> C.17 Experimental Work, Idle or Standby Time
>
> During the progress of operations under these specifications,
> Contracted crew and equipment could be required by TL to stand idle
> during normal working hours, perhaps especially during recovery
> testing. In such an event, the TL will request that the Contractor
> cease operations, and will state the anticipated extent or duration
> thereof. The contractor shall promptly cease operation. The Contractor
> shall maintain a record of such standby time and will be paid for this
> idle time requested by the TL.

---------End of Section C---------

SECTION F --- DELIVERIES OR PERFORMANCE

F.1 Place of Performance

> Services to be provided hereunder shall be performed at the following
> location(s):
>
> Within and near the Gwynns Falls Watershed, Baltimore County, MD
> (Figure 1), and within the GFW,
>
> at the initial 20 primary or priority sites (Figure 2, and Table 1).

F.2 Effective Period of Contract \-- Ordering

> The estimated Period of Performance is October 20, 2008 through
> December 31, 2008.

F.3 Period of Performance \-- Drilling

> \(a\) The contractor shall be mobilized at the drill site and commence
> drilling by within15 calendar days after issuance of an award by the
> Contracting Officer. The Government will contact the contractor within
> five work days after the written notice is issued to establish a
> mutually agreeable start date. It is anticipated that the award date
> will on or around October, 20, 2008.
>
> \(b\) The period of performance of this contract is estimated to be
> October 20, 2008 through December 31, 2008. The Period of Performance
> may be extended by two calendar days for each additional 150 feet of
> drilling, or fraction thereof, beyond the estimated quantities in
> Section B, as determined by the Contracting Officer.

F.4 Scheduling of Daily Work Hours

> Conditions during the required drilling performance period may make
> work during other than normal work hours mutually desirable. The
> contractor may revise the daily working schedule with the concurrence
> of the TL, provided such change will not increase the contract price
> nor delay contract completion.

**---------End of Section F---**

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