VA_ERFO_COLO_2011-1(1)_Amendment_003.pdf

Amendment No. 003

Info Page 1 of 1

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Amendment No. 003 Project VA ERFO COLO 2011-1(1) Colonial National Historical Park Solicitation: DTFH71-13-B-00033

The purpose of this Amendment is to:

1) Replace Plan Sheet S02 provided under Amendment 002.

The Bid Opening date of June 18, 2013 at 2:00 pm EST will remain the same.

Plan Sheet changes

Delete Amendment 002 Plan Sheet S02, and substitute Amendment 003 Plan Sheet S02.

a) Sheet S02 (Temporary In-Stream Diversion Methods) updated to correct NOTE 1 and diversion option dimensions.

U.S. CUSTOMARY DETAIL

DETAIL

DIVERSION METHODS

TEMPORARY IN-STREAM

E157-A

OPTION B

OPTION C

OPTION D

OPTION A

Existing Abutment or Pier

NOTES:

Limit of work zone

Limit of work zone

Limit of work zone

NO SCALE

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

(anchoring method to be approved by CO)

Waterproof membrane

Existing ground

Concrete barrier

Sandbag (Typ.)

min.

4’- 6"

Concrete barrier

Sandbag (Typ.)

Waterproof membrane

Existing ground

Concrete barrier

Sandbag (Typ.)

Waterproof membrane

Waterproof membrane

Sandbag (Typ.)

Existing ground a t ti m e o f c o n ts r u c ti o n

D iv e r te d w a te r l e v e l

(cfs)

Q

TABLE 1

of Diversion Berm

Approx. Height

DETAIL APPROVED FOR USE

4.

3.

2.

1.

n/a n/a

S02

APPROVED :

12"

0.5’ (min.)

0.5’ (min.)

0.5’ (min.)

0.5’ (min.)

AMENDMENT #003

MHW elevation

MHW elevation

MHW elevation

MHW elevation

Existing ground

Varies

Varies

1.21College Creek Bridge

Mill Creek Bridge

Isthmus Bridge Varies

1.21

1.21n/a

(ft)

MHW

Site Location

REVISIONS

DESCRIPTION

Revision to Note 1

NO. BY DATE

L.CANO1

2 L.CANOAdditional diversion detail

L.CANORevision to Table 1 3 c o n s tr u c ti o n le v e l a t ti m e o f

D iv e r te d w a te r c o n s tr u c ti o n le v e l a t ti m e o f

D iv e r te d w a c o n s tr u c ti o n le v e l a t ti m e o f

D iv e r te d w a

06/06/13

06/06/13

06/06/13 min.

6" min.

12" min.

24"

Place a maximum of one diversion in the stream at any given time.

as needed after rainfall events or as directed by the CO.

While in use, inspect and maintain the temporary diversion berm daily. Repair

Construct temporary diversion according to Subsection 157.09.

temporary stream diversion to the CO for approval prior to installation.

of 0.5 ft of freeboard from the top of the waterproof membrane. Submit plans for minimum height equivalent to the Mean High Water elevation (MHW) with a minimun berms, dams, etc.). As a minimum, provide a temporary diversion berm with a diverting the stream (including any approved prefabricated or portable diversion construction operations. The Contractor may choose an alternate means of

The options shown are suggested configurations for diverting the stream during

(See Note 1)

Min. Top Berm Elev

(See Note 1)

Min. Top Berm Elev

(See Note 1)

Min. Top Berm Elev

(See Note 1)

Min. Top Berm Elev

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REG STATE PROJECT SHEET NO.

NE VA

NPS

NO.

64004

2011-1(1)

VA ERFO COLO