Reference Drawing BOS-D-RTR-G102

1.  Change the second sentence in note 3 to read. "The contractor shall
    determine size of circuit conductors [fed]{.underline} from the EG
    van (see DWG E101) [and identify to COTR".]{.underline}

2.  Change Note 18 to read "not exceeding 6 inches..."

Reference Drawing BOS-D-RTR-C101

1.  See Site Plan: The contractor shall remove abandoned 2" Steel
    Conduit (abandoned), extending into proposed EG shelter placement,
    located at the 17' x 28'-6" concrete pad

2.  See Site Plan, callout A8 is referring to entire site area.

3.  Change the second sentence in Note A13 to read "Asbestos may be
    present in the existing EG gaskets.

4.  Change Note A18 from "...¾ inch processed gravel..." to "...¾ inch
    minimum...".

5.  Change Note A18 from "...98 percent maximum density..." to "...95
    percent maximum density.

Reference Drawing BOS-D-RTR-C102

> 1 See Site Plan: The contractor shall remove the 2" Steel Conduit
> (abandoned) extending into proposed EG shelter placement area, located
> at the 17' x 28'-6" concrete pad

2.  See Detail 2. Contractor to remove safety bollards.

3.  See Detail A. Pad to be 6" thick reinforced with wire mesh
    6x6-W2.9xW2.9. [4000]{.underline}-PSI concrete.

4.  Change Note A2 to read, "Contractor shall replace the demolished
    concrete with bituminous paving to match existing".

5.  Change the second sentence in Note A7 to read, "The 18" square, 12 "
    deep stainless steel, lockable, hinged, watertight enclosure to
    transition fuel lines is GFM Installed.

6.  Change Note A9 to read "4" steel pipe hole thru the new shelter for
    fuel pipe exists.

7.  Change Note A18 to read. "Contractor shall provide and install a new
    concrete apron at underground 600 gallon diesel fuel tank. See
    drawing M104 for more information. Coordinate with COTR."

8.  Change NOTE A19 to read: "Provide, install, maintain, service, and
    fill for the duration of the project, a temporary 300-gallon
    double-wall steel fuel tank."

Reference Drawing BOS-D-RTR-C103

1.  See detail B; A vapor barrier is required under the 2" Rigid
    Insulation.

2.  Conduit trench work shown in detail 3 is required under this
    contract.

3.  Change notes A4 and A6 to 4000 PSI in accordance with Division
    03300.

Reference Drawing BOS-D-RTR-C104

1.  Detail A, B, D: Air Terminal should read: 48" Blunt Tip, Air
    Terminal (TYP). See sheet E105.

2.  See Detail C, Stainless steel transition for fuel lines to UST is
    GFM.

Reference Drawing BOS-D-RTR-E101

1.  NOT SHOWN -- A Feeder presently exists from the MPA 75 KVA
    transformer to FAA CMU building. Power shall be available at all
    times.

2.  NOTE C7 should read as the following: Contractor shall provide
    necessary secondary connections (conduit and cable) of the 7.5 KVA
    (GFM) transformer, single phase, 120/208-480Vac for the new PAPI
    feed (not shown). (Transformer is GFM installed). See Sheet E106.

Reference Drawing BOS-D-RTR-E102

1.  NOT SHOWN -- A Feeder presently exists from the MPA 75 KVA
    transformer to FAA CMU building. Power shall be available at all
    times.

2.  Change note B2 to read: Contractor shall provide and install a
    temporary fuel tank. See Mechanical Drawings. Delete reference of
    the 72 hours of temporary fuel. See drawing BOS-D-RTR-C102.

3.  Change note B9 to read: Contractor shall see sheet M101 and sheet
    C102 for temporary fuel tank requirements.

Reference Drawing BOS-D-RTR-E103

1.  Change note A2 to read: Contractor shall provide and install fuel
    lines to [day]{.underline} tank. (GFE INSTALLED)

2.  Change note A12 from ¾" to 1" in accordance with drawing M101 Note
    A14.

3.  Reference Note A22. Contractor shall install the Veeder Root Fuel
    monitoring system (GFM). The contractor shall hire the services of
    the Manufacturer's Representative to start and setup. See Note A14
    on drawing M101. Contractor is not required to purchase unit.

4.  Contractor shall provide work identified under Note A5. Contactor
    shall provide and install a neutral bond to the earth electrode
    system (counterpoise).

5.  Delete note A8, not required.

Reference Drawing BOS-D-RTR-E106

1.  Change the last sentence in Note C2 to read as; See Note 3 on DWG
    BOS-D-RTR-G102 and Note C5 on DWG BOD-D-RTR-E101.

Reference Drawing BOS-D-RTR-M101

1.  Disregard the first sentence of Note A9 and change to read as
    Provide and install ¾" fuel supply and ¾" return lines inside 4"
    secondary containment pipe to underground storage tank. See DWG
    BOS-D-RTR-C102 for tank pipe location. Stainless Steel Transition
    Box is "GFM Installed".

2.  Change first sentence of Note A11 to read, "Contractor to provide
    and install new vent from underground fuel storage tank."

Reference Drawing BOS-D-RTR-M104

1.  Change Note 1 to read as: ¾" supply and return fuel lines (OPW
    Pisces type or approved equal) in 4" FRP secondary containment.
    Supply elbows and fittings of schedule 40 black [iron,]{.underline}
    as necessary. Fuel [lines]{.underline} shall be continuous from
    underground sump to building entry.