Plans (1).pdf

PDF 6 MB Posted Jul 9, 2020

Attached to: New Boston Air Force Station, Dam Repair, New Boston, NH
Solicitation number: W912WJ20Q0069
Issued by: Department of the Army Corps of Engineers Engineering District New England

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File	Type	Posted
Amendment W912WJ20Q0069-0001.pdf	PDF	Jul 21, 2020
Solicitation W912WJ20Q0069.pdf	PDF	Jul 9, 2020
Specifications.pdf	PDF	Jul 9, 2020
Plans.pdf	PDF	Jul 9, 2020

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10:37:09 AM 6/16/2020

DESIGN FILESHEET NO.

G-001

INDEX TO DRAWINGS

SHEET TITLE

OF ALL DRAWINGS IN THIS SET AS INDEXED ON THIS SHEET

SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION AND APPROVAL

APPROVED FOR TECHNICAL ADEQUACY BY:

TECHNICAL LEAD ENGINEER DATE

DATE

APPROVAL RECOMMENDED BY:

REVIEWED BY:

CHIEF, GEOTECHNICAL/WATER RESOURCES BRANCH

REVIEWED BY:

CHIEF, DESIGN BRANCH

scope of their employment as required by ER 1110-1-8152.

and registration designations of individuals appear on these project documents, within the

This project was designed by the U.S. Army Corps of Engineers. The initials or signatures

CHIEF, ENGINEERING DIVISION

CHIEF, GEO-ENVIRONMENTAL ENGINEERING BRANCH

APPROVAL RECOMMENDED BY:

NEW BOSTON, NEW HAMPSHIRE

NEW BOSTON AIR FORCE STATION

MASSACHUSETTS

NEW

HAMPSHIRE

MAINE

VT.

CONN.

R.I.

HARTFORD

PROV.

CAPE

COD

BOSTON

PORTSMOUTH

CONCORD

PORTLAND

AUGUSTA

BANGOR

ATLANTIC

OCEAN

CANADA

LOCATION MAP

NOT TO SCALE

VICINITY MAP

NOT TO SCALE

AFB

NEW BOSTON

MANCHESTER

NEW BOSTON

GREENTREE POND

SEAVEY POND

AF-89-270-02_G-001.DGN

AF-89-270-02_G-101.DGNG-101 GENERAL SITE PLAN

AF-89-270-02_C-101.DGNC-101 SITE PLAN SEAVEY POND AND DAM

AF-89-270-02_C-102.DGNC-102 SITE PLAN GREENTREE POND AND DAM

S-101

S-102

AF-89-270-02_S-101.DWG

AF-89-270-02_S-102.DWG

STRUCTURAL PLAN AND ELEVATIONS SEAVEY POND AND DAM

of Engineers

US Army Corps

CONTRACT NO.:

ISSUE DATE:

New England District

STRUCTURAL PLAN AND ELEVATIONS GREENTREE POND AND DAM

AF-89-270-02_C-501.DGNC-501 CIVIL DETAILS

DAM REPAIRS - GREENTREE AND SEAVEY PONDS

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S-701 AF-89-270-02_S-701.DWG PHOTOS

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COVER SHEET AND INDEX TO DRAWINGS

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W912WJ-20-Q-0069SOLICITATION NO.:

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JUNE 2020

E6EPDLPT

Typewritten Text

LPT

E6EPDLPT

WF WF

682.8

683.6

684.2

687.0 WF WF

689.3

681.3

682.7

WETLANDS

JMS

DAM1

WETLANDS

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D S pw://COE-NAEPWP01CON.nae.ds.usace.army.mil:coe-naepwp01con.nae.ds.usace.army.mil/Documents/Military Installations/New Boston Air Force Station, NH/Dam Repairs - Greentree & Seavey Ponds/30000 - Planning & Engineering & Design/40000 Design Products/CAD_BIM

SCALE: 1" = 20' 20' 40'0

SITE PLAN - SEAVEY POND DAM

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IMPACT 200 SF

TEMPORARY WETLAND

FILTER SOCK

SILT FENCE/COMPOST

(SEE SHEET S-101)

EXISTING CONCRETE WEIR

STRUCTURE TO REPLACE

PROPOSED CONCRETE WEIR

IMPACT 150 SF

WETLANDS

TEMPORARY

(SEE SHEET S-701, PHOTO C8)

EXISTING OUTLET

(SEE SHEET S-101)

EXISTING 24" DIAMETER CMP

PROPOSED 24" HDPE TO REPLACE

COFFERDAM

PROPOSED SAND BAG

HEADWALL

PROPOSED

(SEE SHEET S-701, PHOTO A8)

INLET EMBANKMENT

(SEE SHEET S-701, PHOTO A4)

OUTLET EMBANKMENT

(APPROXIMATE)

EXISTING ACCESS ROAD

STAGING/STOCKPILE AREA

APPROXIMATE CONSTRUCTION

(SEE SHEET S-701, PHOTO A1)

EXISTING INLET

(SEE NOTE 2)

DRY HYDRANT AND CONCRETE PAD

REMOVE AND DISPOSE OF EXISTING

LOAMED AND SEEDED.

ANY UNSUITABLE OR EXCESS MATERIAL WILL REMAIN IN THE STOCKPILE AND BE

3. ALL EXCAVATED MATERIAL SHALL BE STOCKPILED AND REUSED.

SHALL BE REMOVED FROM THE SITE TO AN APPROVED LOCATION.

2. THE DRY HYDRANT AND PIPING, THE CULVERT AND EXISTING CONCRETE STRUCTURES

EROSION IN ACCORDANCE WITH SPECIFICATION SECTION 31 00 00 EARTHWORK.

STOCKPILE MATERIAL TO HAVE A 1V:3H SLOPE. STABILIZE THE SPOIL STOCKPILE FROM

1. ALL MATERIAL REMOVED FROM THE EARTHEN DAM SHALL BE STOCKPILED.

SEAVEY POND NOTES:

(APPROXIMATE)

EXISTING TREE LINE

E6EPDLPT

INV. EL. 727.82

TWIN CULVERTS

INV. EL. 724.97

INV. EL. 725.57

18" CULVERT

INV. EL. 726.38

18" CULVERT

WFWF

INV. EL. 727.31

WF WF

732.8

732.9

733.0

733.1

WETLANDS

GREEN

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CULVERT TO REMAIN

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TO REMAIN

CULVERT

TEMPORARY WETLAND IMPACT 800 SF

PROPOSED SANDBAG COFFERDAM

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IMPACT 200 SF

TEMPORARY WETLAND

FILTER SOCK/SILT FENCE

PROPOSED COMPOST

AREA

STAGING/STOCKPILE

CONSTRUCTION

PROPOSED

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(SEE SHEET S-103, DETAIL D7)

PROPOSED GATE

(SEE SHEET S-103, DETAIL D7)

PROPOSED GATE

(SEE SHEET S-701, PHOTO E8)

DEBRIS PILE TO BE REMOVED

(SEE SHEET S-701, PHOTO E4)

EXISTING INLET AREA

(SEE SHEET S-103, DETAIL D7)

PROPOSED 4' WIDE CONCRETE CULVERT

(SEE SHEET S-701, PHOTO C1)

OUTLET LOCATION

(SEE SHEET S-103, DETAIL D7)

PROPOSED GATE

(SEE SHEET S-103)

CULVERT AND STRUCTURE TO BE REPLACED

BEAVER DAM TO BE REMOVED

APPOXIMATE CULVERT INLET UNDER BEAVER DAM.

(SEE SHEET S-102 FOR REPLACEMENT DESIGN)

OUTLET INVERT EL. 726.38

INLET INVERT UNKNOWN,

18" CORRUGATED METAL PIPE,

(SEE SHEET C-501, DETAIL B2)

MAX SLOPE 3:1

ELEVATION 736.90

START 6 FT WIDE RIP RAP DITCH

SHOWN.

CONTRACTOR SHALL PROTECT ALL WETLAND AREAS OUTSIDE OF DISTURBED WETLANDS AS 4.

MATERIAL WILL REMAIN IN THE STOCKPILE AND BE LOAMED AND SEEDED.

ALL EXCAVATED MATERIAL SHALL BE STOCKPILED AND REUSED. ANY UNSUITABLE OR EXCESS 3.

REMOVED FROM THE SITE TO AN APPROVED LOCATION.

THE DRY HYDRANT AND PIPING, THE CULVERT AND EXISTING CONCRETE STRUCTURES SHALL BE 2.

SPECIFICATION SECTION 31 00 00 EARTHWORK.

TO HAVE A 1V:3H SLOPE. STABILIZE THE SPOIL STOCKPILE FROM EROSION IN ACCORDANCE WITH

ALL MATERIAL REMOVED FROM THE EARTHEN DAM SHALL BE STOCKPILED. STOCKPILE MATERIAL 1.

GREENTREE POND NOTES:

(SEE SHEET C-501, DETAIL E2)

ELEVATION 736.38

END 6 FT WIDE DITCH

(APPROXIMATE)

ROAD

ACCESS

EXISTING

(APPROXIMATE)

EXISTING TREE LINE

(SEE NOTE 2)

HYDRANT

REMOVE DRY

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COMPOST FILTER SOCK

WORK AREA

PROTECTED AREA

3"-4"

LENGTH OF COMPOST FILTER SOCK.

2. WOODEN STAKES SHALL BE SPACED EVERY 10' ALONG ENTIRE LINEAR

GROUND ALONG ITS ENTIRE LENGTH.

1. BOTTOM OF COMPOST FILTER SOCK SHALL BE IN FULL CONTACT WITH THE

NOTES:

SCALE: NTS

TYPICAL TRENCH DETAIL

STAKE (SEE NOTE 2)

2" x 2" WOODEN

SOCK

COMPOST FILTER

6" MIN

SATISFACTORY MATERIAL (EXISTING)

AND SEED

4" LOAM

PLAN VIEW

(T Y

LINED LAYER

12" THICK ROCK-

ROCK-LINED OUTLET PROTECTION

SCALE: NONE

pw://COE-NAEPWP01CON.nae.ds.usace.army.mil:coe-naepwp01con.nae.ds.usace.army.mil/Documents/Military Installations/New Boston Air Force Station, NH/Dam Repairs - Greentree & Seavey Ponds/30000 - Planning & Engineering & Design/40000 Design Products/CAD_BIM

11:27:40 7/1/2020 PD: AEC_pdf.pltcfg DS: AEC_Screen.dscript.dscript

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FORMALY SLOPED SURFACE.

4. THE FINISHED SURFACE SHALL BE A RELATIVELY SMOOTH UNI-

NOT ALLOWED TO DROP MORE THAN 12 INCHES.

3. THE RIPRAP STONES SHALL BE LOWERED TO THE SLOPE AND

FROM THE TOE OF THE SLOPE UPWARD.

2. THE RIPRAP STONES SHALL BE CAREFULLY PLACED WORKING

EROSION CONTROL RIPRAP (SEE SPECIFICATION SECTION 31 00 00, EARTHWORK).

1. THE ROCK GRADATION SHALL BE A WELL-GRADED MIX OF 6-INCH

NOTES:

PAR 1.2.10

SECTION 31 00 00

CLASS 2 PER

INITIAL BACKFILL MATERIAL,

10'-0" OR EXTENT OF NEW CHANNEL

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PROPOSED 6 FT CHANNEL RIP RAP SECTION

EXISTING GRADE

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6" RIP RAP

EXISTING GRADE

MAX SIDE SLOPE 3H:1V

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EXISTING 24" HDPE PIPE TO BE REPLACED WITH

NEW 22 LF 24" HDPE CORRUGATED

SMOOTH INTERIOR PIPE IN SAME LOCATION

S=2%

TOP OF GRATED INLET EL. 682.70

UNDISTURBED EARTH

INV. EL. 677.30

PROPOSED NON-WOVEN GEOTEXTILE

FABRIC (8 OZ.)

SLOPE 2%

LOAM AND

STRAW MAT W/

SEED

TRENCH BEDDING MATERIAL

SEE B7/C-501

0'-8"

3'-6"X3' NEW CONCRETE COLLAR

(SEE COLLAR DETAIL)

RE-USE AND

RE-COMPACT

EXISTING FILL IN

THIS AREA

SEE B8/C-501

EXCAVATION AREA

(STRUCTURAL AND

GENERAL BACKFILL TO BE

PLACED IN 12" LIFTS)

RE-USE EXISTING STONES

(USE NATURAL ROUNDED 6"-8"

STONE IF ADDITIONAL IS NEEDED)

3'-8"

3'-6"

2'-0"

2'-4"

MORTAR ANNULAR

SPACE

INV.OUT

EL. 676.86

SUMP

EL.676.30

GALV. STEEL GRATE

3'-0"

3'-6"

6" MIN.

SEE DETAIL (B7/C501)

3'-6"

PROPOSED PRE-CAST SINGLE

OUTLET WEIR STRUCTURE

BOTTOM OF STRUCTURE EL. 675.80

TOP OF BERM EL. 683.70

PROPOSED PRE-CAST SINGLE

OUTLET WEIR STRUCTURE

a7x^=6X7A2j4x-A

6 INCHES

MINIMUM

RIP RAP OUTLET STABILIZATION

SEE DETAIL (B2/C501)

CONSTRUCTION NOTES:

1. CONTRACTOR TO FIELD CONFIRM ALL DIMENSIONS

25'-5 1/4"

CONCRETE COLLAR

CULVERT PIPE THROUGH COLLAR

PROPOSED 24" CORRUGATED HDPE PIPE

2% SLOPE

APPROXIMATE LENGTH OF EXCAVATION (TOP WIDTH OF BERM 8'-0" MIN.)

2'-0"

6" MIN.SIZE RIP RAP

6" MIN. FREEBOARD

4'-4"

5'-0"

0'-8"

S-101

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SCALE: 1" - 1' - 0"

SEAVEY POND ELEVATION

0 2' 4'1'

SCALE: 1" - 1' - 0"

SEAVEY POND PLAN

0 2' 4'1'

S-101

SCALE: 1" - 1' - 0"

NEW CONCRETE COLLAR SECTION

0 2' 4'1'

S-101

SCALE: 1" - 1' - 0"

NEW CONCRETE COLLAR SECTION

0 2' 4'1'

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REMOVE BEAVER DAM AND

DEBRIS APPROXIMATELY VOL. 20'X20'X5'

AND REMOVE EXISTING FIRE PROTECTION

PIPE AND FOOTING

CONSTRUCTION JOINT (TYP.)

16'-0"10'-0"10'-0"14'-0"

CONTRACTOR TO EXCAVATE AND LOCATE

NATURAL POND BOTTOM ELEVATION.

SLOPE CULVERT 1% TO OUTLET

PROPOSED INLET INVERT=726.38

SLOPE 1%

APPROXIMATE FINISH GRADE

2" BELOW TOP OF CULVERT

(TYP.)

REMOVE BEAVER DAM AND

DEBRIS, VOL. APPROXIMATELY

20'X20'X5'

AND REMOVE EXISTING DRY HYDRANT

INSTALL 5"X6" BLOCKOUT

FOR STOPLOGS

GREENTREE POND

CONTRACTOR TO INSTALL

COFFERDAM

G G

50'-0"

OUTLET EL. 726.90

BACKFILL MATERIAL CLASS TYPE 2, 6" DEEP

SPEC. 31 00 00

PAR. 1.2 FOR STRUCTURE BASE

(STRUCTURAL AND GENERAL FILL SHALL

BE COMPACTED IN 12" LIFTS)

EL. 730.00

4' -6

UNDISTURBED EARTH

2'-6"

4'-6"

3'-8"

PIPE 1.25 STD. (TYP.)

15' 13'

3'-0"

18"

PROVIDE SIGN TO READ AS

SHOWN. ATTACH WITH

STAINLESS

STEEL HARDWARE.

3" HIGH LETTERS

DIMENSIONS 18"x18"

FALL

HAZARD

PROCEED

WITH

CAUTION

CONC.

FILLED

STEEL

PIPE WITH

EYE FOR

CHAINING

EYES FOR

CHAINING

(2 REQ.)

3500 PSI CONC. FOOTING (TYP.)

(TYP.)

STEEL

PIPE

FILLED

PIPE 6 X-STRONG

FINISHED GRADE

4" PIPE

HINGE (TYP.) (180°)

GALV. CAP (TYP.)

(PIPE 3 X- STRONG)

3" PIPE

(TYP.)

RIP RAP OUTLET STABILIZATION

SEE DETAIL (B2/C501)

CONSTRUCTION NOTES:

1. CONTACTOR TO FIELD VERIFY

ALL DIMENSIONS AFTER

EXISTING INLET LOCATION

CONFIRMED

RIP RAP OUTLET STABILIZATION

SEE DETAIL (B2/C501)

APPROXIMATE BASE OF SLOPE

SECURITY GATE SEE DETAIL D7

FLOW DIRECTION

CONC.

PIPE 6 X-STRONG

PROPOSED PRECAST CULVERT

SEE DETAIL A7

6' -0

EL. 733.50

PROPOSED PRECAST CULVERT

SEE DETAIL A7

10'-0"

EXACT LOCATION TBD BY

OWNER AT CONSTRUCTION

CONSTRUCTION NOTES:

1. CONTACTOR SHALL CONFIRM ALL

ELEVATIONS AND DIMENSIONS PRIOR

TO SUBMITTING SHOP DRAWINGS

10'-0"

APPROXIMATE TOP OF BANK

7' -0

10"

4'-4"

EL. 727.40

EL. 733.5

#5 REINFORCING

12" SPACING EACH

DIRECTION, EACH

FACE LAP BARS

MIN. 12"

#5 REINFORCING

24" SPACING/

FROM BOTTOM

BARS EXTEND 18"

INTO WALL (TYP.)

MAINTAIN 2" MIN. CLEAR COVER

OVER REINFORCING

6'-0"

NOTCH GUIDE SLOT FOR 10 6X6 WHITE OAK

STOPLOGS SUPPLIED BY CONTRACTOR

(5"DEEP X 6"WIDE)

S-102

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A7 S-102

A1 S-102

C1 GREENTREE POND PLAN

3/16"=1'

8'0 4' 16'

A1 GREENTREE POND ELEVATION

3/16"=1' 8'0 4' 16' A7 GREENTREE POND CULVERT SECTION

1/2"=1' 8'0 4' 16'

D7 GATE DETAIL

NOT TO SCALE

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D . S

N O

D 1:

N N

C R

O N

D B

C O

N O

B Y:

D R

B Y:

E D

SHEET ID

2 3 4 5 6 7 8 9 10

US Army Corps of Engineers

U .S

.A R

M Y

C O

O F

R S

E N

N D

R G

R O

O N

C O

R D

, M A

D R

G C

O D

O F

B O

N A

O R

C E

B O

N , N

E D

R S

- G R

A N

D S

N D

-8

GREENTREE POND (EXISTING INLET AREA)

NOT TO SCALEE4

GREENTREE POND (DEBRIS PILE TO BE REMOVED

NOT TO SCALEE8

SEAVEY POND (INLET)

NOT TO SCALEA1 SEAVEY POND (OUTLET EMBANKMENT)

SCALE: A4 SEAVEY POND INLET (INLET EMBANKMENT)

NOT TO SCALEA8

GREENTREE POND (FACING OUTLET LOCATION)

NOT TO SCALEC1 SEAVEY POND (OUTLET)

NOT TO SCALEC8

AF-89-270-02_G-001.pdf

AF-89-270-02_G-101_rev01.pdf

AF-89-270-02_C-101_rev01.pdf

AF-89-270-02_C-102_rev01.pdf

AF-89-270-02_C-501_rev01.pdf

AF-89-270-02_S-101.pdf

Sheets and Views

AF-89-270-02_S-101-S-101

AF-89-270-02_S-102-S-102_rev01.pdf

Sheets and Views

S-102

AF-89-270-02_S-701.pdf

Sheets and Views

AF-89-270-02_S-701-S-700

	2020-07-02T14:06:18-0400
TESSIER.MATTHEW.E.1377053253

	2020-07-02T14:20:47-0400
PHILLIPS.HENRY.S.1491053662

	2020-07-07T12:43:01-0400
MARGOLIS.DAVID.I.1228573805

File details come from the government source that posted it. Updated Jul 9, 2020.