amendment cover letter - nh.gov · ref: 52380.09 page 2...

$: Amendment cover letter - NH.gov · Ref: 52380.09 Page 2 \\vhb\proj\Bedford\52380.09\docs\Permits\Wetlands Permit Amendment\Amendment_cover letter.docx Restore rip rap stabilization$
\\vhb\proj\Bedford\52380.09\docs\Permits\Wetlands Permit Amendment\Amendment_cover letter.docx

April 30, 2018 Ref: 52380.09 Matt Urban NH Department of Transportation Bureau of Environment John O. Morton Building 7 Hazen Drive, PO Box 483 Concord, NH 03302-0483 Re: Bridge #089/099 Rehabilitation Project (NHDOT #24497)

NH 18 Over Lafayette Brook, Franconia, New Hampshire NHDES Wetlands Permit #2017-00004 Amendment

Dear Mr. Urban,

The NH Department of Transportation (NHDOT) submitted a Wetlands Permit Application to the NH Department of Environmental Service (NHDES) in December 2016 for the proposed rehabilitation of Bridge #089/099 in Franconia, NH (NHDOT #24497). This letter requests a minor amendment of Wetland Permit #2017-00004 to allow for the construction of the project.

Bridge #089/099 carries NH 18 (Profile Road) over Lafayette Brook, immediately adjacent to its intersection with NH 141 (Butterhill Road) (refer to Figure 1, attached). The proposed rehabilitation of the bridge will address deficiencies found within the superstructure, which placed the bridge on the NHDOT Red List in 2010. The proposed rehabilitation includes replacing the bridge superstructure, while retaining the existing abutments and wingwalls, with modifications to the upper railing sections. The NHDES Wetlands Permit (NHDES #2017-00004) was granted for this project on April 6, 2017 (see attached).

Since the permit was issued, the proposed design for the project has been updated to modify the rip-rap slope along Lafayette Brook (refer to the revised Wetland Permitting Plans, attached). The NHDOT Bureau of Bridge Maintenance recommends that the toe of the slopes down to Lafayette Brook around the bridge structure be further secured due to the history of erosion that has occurred along the slopes of the brook. The proposed change would extend the rip-rap slope stabilization along Lafayette Brook, resulting in a slight increase of bed and bank impact along the eastern side of the proposed rip-rap slope on the southern slope of the brook. An increase in rip-rap is also proposed along the majority of the northern slope of Lafayette Brook, resulting in additional bed and bank impact relative to the permitted limits. These modifications would result in a decrease in the temporary impacts proposed along the northern slope of Lafayette Brook, which would result from equipment accessing the slopes of the brook to conduct the slope stabilization work.

The approved permit currently reads:

Ref: 52380.09 Page 2

\\vhb\proj\Bedford\52380.09\docs\Permits\Wetlands Permit Amendment\Amendment_cover letter.docx

Restore rip rap stabilization and reconstruct drainage swale impacting 1,899 sq. ft. of riverine and palustrine wetlands temporarily impacting 1,096 sq. ft. for access and water diversions.

NHDOT respectfully requests an amended permit to read as follows:

Restore rip rap stabilization and reconstruct drainage swale impacting 2,068 sq. ft. of riverine and palustrine wetlands temporarily impacting 991 sq. ft. for access and water diversions.

The slight increase in total impacts from 1,899 SF to 2,068 SF will result in the total impact fee to be raised from $379.80 to $413.60, resulting in an increase of $33.80. This additional fee of $33.80 is included with this memorandum to cover the additional proposed impacts.

The proposed project involves the addition of riprap along the banks of Lafayette Brook where riprap already exists. The additional riprap proposed in this amendment complies with the NHDES rules found in Env-Wt 404. The updated Wetland Plans include a typical section and plan views of the proposed riprap installation work. NHDOT will use Class V riprap which includes a nominal size of 18” and a maximum size of 36”. The percentage of distribution by particle size for this class is 1.3” for <15%, 3.5” for 15% - 85%, and 8.5” for >85%. The maximum particle size allowed for this class is 22”.

The increased bank impact will not require mitigation since the modifications involve additional bank armoring and stabilization along the existing rip-rap slope. These additional permanent wetland impacts are limited to the existing riprap slope. Lori Sommer and Gino Infascelli confirmed that mitigation was not required for these types of permanent wetland impacts at the NHDOT Natural Resource Agency Coordination Meeting on August 19, 2015 (refer to Appendix F in the original Wetlands Permit application for the proposed project).

Please do not hesitate to contact me if you have questions at (603) 391-3900 or [email protected]. Sincerely, Peter Walker Principal, Environmental Services Attachments: Figure 1 – USGS Locus Map NHDES Permit #2017-00004 Updated Wetland Plans Updated NHDES Wetlands Permit Application Form cc: R. Landry, Administrator, Bureau of Bridge Design R. Crickard, Chief, Project Management Section

J. Whitmore, VHB

Figure 1- USGS Locus MapFranconia (NH#24497)Profile Road (NH 18) over Lafayette Brook

Franconia, New Hampshire

l0 2,000 4,000 Feet

Approximate Project Limits

Project Location

Path: \\Vhb\proj\Wat-LD\08518.05\reports\Block 5 NOI\Figures

USGS Quads: Franconia, Sugar Hill

Lovetts Inn

BUTTERHILL ROAD

The State of New Hampshire

Depat trnent of Envi; onmental Sci vices

Clark B. Freise, Assistant Commissioner

April 06, 2017

NH DEPT. OF TRANSPORTATIONdO MAlT URBANP0 BOX 483CONCORD NH 03302-0483

RE: NH Dept. of Transportation - File #2017-00004 - FranconiaTax Map/Lot 4*: Right-of-Way

Dear Mr. Urban:

Attached please find Wetlands Permit # 2017-00004 to replace the bridge superstructure, restore rip rap stabilizationand reconstruct drainage swale impacting 1,899 sq. ft. of riverine and palustrine wetlands temporarily impacting 1,096sq. ft. for access and water diversions. NHDOT project 24497

The decision to approve this application was based on the following findings:

1. This is a major impact project per Administrative Rules Env-Wt 303.02(p), a replacement of a stream crossingstructure in a tier 3.2. The need for the proposed impacts has been demonstrated by the applicant per Env-Wt 302.01.3. The applicant has provided evidence which demonstrates that this proposal is the alternative with the least adverseimpact to areas and environments under the department’s jurisdiction per Env-Wt 302.03.4. The applicant has demonstrated by plan and example that each factor listed in Env-Wt 302.04(a) Requirements forApplication Evaluation, has been considered in the design of the project.5. The project was coordinated through the Natural Resource Agency monthly meetings and discussed on August 19,2015.6. The project does not require mitigation as this meets rule Env-Wt 302.03(c)(2)(c), protection of existinginfrastructure.7. In accordance with RSA 482-A:8, DES finds that the requirements for a public hearing do not apply as the permittedproject is not of substantial public interest, and will not have a significant impact on or adversely affect the values of theriverine resource, as identified under RSA 482-A:1.8. The NHDES has determined the applicant has met the purpose of the current stream rules relative to not causingdamage upstream or downstream and not impeding aquatic organisms.

Any person aggrieved by this decision may appeal to the New Hampshire Wetlands Council (the Council) by filingan appeal that meets the requirements specified in RSA 482-A:l0, RSA 21-0:14, and the rules adopted by theCouncil, Env-WtC 100-200. The appeal must be filed directly with the Council within 30 days of the date of thisdecision and must set forth fully every ground upon which it is claimed that the decision complained of isunlawful or unreasonable. Only those grounds set forth in the notice of appeal can be considered by the Council.

www.des.nh.gov29 ilazen Drive • P0 Box 95 • Concord, NH 03302-0095

(603] 271-3503 • TDD Access: Relay NH 1-800-735-2964

2017-00004Page 2 of 2

Information about the Council, including a link to the Council’s rules, is available at <http://nhec.nh.gov/> (ormore directly at <http://nhec.nh.gov/wetlands/index.htm>.) Copies of the rules also are available from the NewHampshire Department of Environmental Services (NHDES) Public Information Center at (603) 271-2975.

Your permit must be signed, and a copy must be posted in a prominent location on site during construction.

If you have any questions, please contact our office at (603) 271-2147.

Sincerely,

Gino InfascelliPublic Works Project SupervisorNHDES Wetlands Bureau

cc: Franconia Conservation CommissionFranconia Municipal ClerkRobert Landry, NH DOT, Bureau of Highway Design

The State of New Hampshire

Department of Environmental Services

Clark B. Freise, Assistant Commissioner

WETLANDS AND NON-SITE SPECIFIC PERMIT 2017-00004

Permittee: NH DEPT. OF TRANSPORTATION NOTE CONDITIONSP0 BOX 483CONCORD, NH 03302-0483

Project Location: NH ROUTE 18 (PROFILE ROAD), FRANCONIATAX MAP/LOT NO: ROW / ROW

Waterbody: LAFAYETTE BROOK

APPROVAL DATE: APRIL 06, 2017 EXPIRATION DATE: APRIL 06, 2022

Based upon review of the above referenced application, in accordance with RSA 482-A and RSA 485-A:17, a WetlandsPermit and Non-Site Specific Permit was issued. This permit shall not be considered valid unless signed as specifiedbelow.

PERMIT DESCRIPTION: Replace the bridge superstructure, restore rip rap stabilization and reconstruct drainage swaleimpacting 1,899 sq. ft. of riverine and palustrine wetlands temporarily impacting 1,096 sq. ft. for access and waterdiversions. NHDOT project 24497

THIS APPROVAL IS SUBJECT TO THE FOLLOWING PROJECT SPECIFIC CONDITIONS:1. All work shall be in accordance with plans labeled as Preliminary Plans by NHDOT Bureau of Highway Design dated10/26/16, as received by the Department on January 3, 2017.2. This permit is contingent upon the submission of Final Wetland Impact Plans at least 10 days prior to construction.3. Stamped engineering plans are to be submitted to the file at least 10 days prior to construction as required per ruleEnv-Wt 404.04(a) including plan sheets specifically addressing the information required per Env-Wt 404.04 (b).4. Dredged material shall be placed out of the DES Wetlands Bureau jurisdiction.5. Unconfined work within the brook, exclusive of work associated with installation of a cofferdam, shall be doneduring periods of low flow.6. Cofferdams shall not be installed during periods of high flow, whether due to seasonal runoff or precipitation.Once a cofferdam is fully effective, confined work can proceed without restriction.7. Prior to commencing work on a substructure located within surface waters, a cofferdam shall be constructed toisolate the substructure work area from the surface waters.8. Temporary cofferdams shall be entirely removed immediately following construction.9. Construction equipment shall not be located within surface waters.10. Discharge from dewatering of work areas shall be to sediment basins that are: a) located in uplands; b) lined withhay bales or other acceptable sediment trapping liners; and c) set back as far as possible from wetlands and surfacewaters, in all cases with a minimum of 20 feet of undisturbed vegetated buffer.11. Appropriate turbidity controls shall be installed prior to construction, shall be maintained during construction suchthat no turbidity escapes the immediate dredge area, and shall remain in place until suspended particles have settledand the water at the work site has returned to normal clarity.12. Within three days of the last activity in an area, all exposed soil areas, where construction activities are complete,shall be stabilized by seeding and mulching during the growing season, or if not within the growing season, by mulchingwith tack on slopes steeper than 3:1 or netting /matting and pinning on slopes steeper than 2:1.

www.des.nh.gov29 Hazen Drive • P0 Box 95 • Concord, NH 03302-0095

(603] 271-3503 • TDD Access: Relay NH 1-800-735-2964

2017-00004Page 2of2Conditions Cont’d

13. Where construction activities have been temporarily suspended within the growing season, all exposed soil areasshall be stabilized within 14 days by seeding and mulching or if temporarily suspended outside the growing season, allexposed areas shall be stabilized within 14 days by mulching, mulching with tack on slopes steeper than 3:1 andstabilized by matting and pinning on slopes steeper than 2:1.14. The contractor responsible for completion of the work shall utilize techniques described in the New HampshireStormwater Manual, Volume 3, Erosion and Sediment Controls During Construction (December 2008).15. Extreme precautions to be taken within riparian areas to limit unnecessary removal of vegetation during roadconstruction and areas cleared of vegetation to be re-vegetated as quickly as possible.16. There shall be no further alteration to wetlands or surface waters without amendment of this permit.17. Standard precautions shall be taken to prevent import or transport of soil or seed stock from nuisance, invadingspecies such as purple loosestrife or Phragmites.18. All activity shall be in accordance with the Shoreland Water Quality Protection Act, RSA 483-B.

GENERAL CONDITIONS THAT APPLY TO ALL NHDES WETLANDS PERMITS:1. A copy of this permit shall be posted on site during construction in a prominent location visible to inspecting

personnel;2. This permit does not convey a property right, nor authorize any injury to property of others, nor invasion of rights of

others;3. The Wetlands Bureau shall be notified upon completion of work;4. This permit does not relieve the applicant from the obligation to obtain other local, state or federal permits, and/or

consult with other agencies as may be requited (including US EPA, US Army Corps of Engineers, NH Department ofTransportation, NH Division of Historical Resources (NH Department of Cultural Resources), NHDES-Alteration ofTerrain, etc.);

5. Transfer of this permit to a new owner shall require notification to and approval by NHDES;6. This project has been screened for potential impacts to known occurrences of protected species and exemplary

natural communities in the immediate area. Since many areas have never been surveyed, or have only receivedcursory inventories, unidentified sensitive species or communities may be present. This permit does not absolvethe permittee from due diligence in regard to state, local or federal laws regarding such communities or species.

7. Review enclosed sheet for status of the US Army Corps of Engineers’ federal wetlands permit.

1 /1 ezAPPROVED: -z-

- Gino InfascelliNHDES Wetlands Bureau

BY SIGNING BELOW I HEREBY CERTIFY THAT I HAVE FULLY READ THIS PERMIT AND AGREE TO ABIDE BY ALL PERMITCONDITIONS.

OWNER’S SIGNATURE (required) CONTRACTOR’S SIGNATURE (required)

w

DRIVEWAYS

BUILDINGS

FOUNDATION

STEPS AND WALK

INTERMITTENT WATER COURSE

SHORE LINE

BRUSH OR WOODS LINE

TREES (PLANS)

HEDGE

WELL

SEPTIC TANK

LEACH FIELD

GAS PUMP

FUEL TANK (ABOVE GROUND)

GRAVE

ROCK OUTCROP

ORIGINAL GROUND

(TYPICALS & SECTIONS ONLY)

(TYPICALS)

ROCK LINE

STONE WALL

RETAINING WALL (LABEL TYPE)

SIGNS

MAILBOX

(label type)

(label type)

river/stream

(deciduous)(coniferous) (stump)

(double post)

(single post)

(label type)

SATELLITE DISH ANTENNA

DELINEATED WETLAND

BORING LOCATION

TEST PIT

CONSTRUCTION BASELINE

PC, PT, POT (ON CONST BASELINE)

PI (IN CONSTRUCTION BASELINES)

INTERSECTION OR EQUATION OF

TWO LINES

ORIGINAL GROUND LINE

(PROFILES AND CROSS-SECTIONS)

PROFILE GRADE LINE

(PROFILES AND CROSS-SECTIONS)

SLOPE LINE (FILL)

SLOPE LINE (CUT)

ORIGINAL GROUND ELEVATION (LEFT)

FINISHED GRADE ELEVATION (RIGHT)

INTERSTATE NUMBERED HIGHWAY

UNITED STATES NUMBERED HIGHWAY

STATE NUMBERED HIGHWAY

PROFILES AND CROSS SECTIONS:

(label surface type)

pond

(label size & type)

FLAG POLE

ENGINEERING

SLOPE LINE

79.14

72.5

CLEARING LINE

EDGE OF PAVEMENT

TRAVELED WAY

ROADWAY

PROPOSED

roadway

existing

outside slope lines)

(pavement removed

be removed)

(building to

of building)

(label house or type

water body)

(label name of

fp

field

leach

retained ground)

(points toward

s

gp

ft

gr

mb

da

vpVENT PIPE

PHONE

TIDAL BUFFER ZONE

ORDINARY HIGH WATER

SPECIAL AQUATIC SITE

TOP OF BANK

TOP OF BANK & ORDINARY HIGH WATER

VERNAL POOL

INVASIVE SPECIES

SLOPE LINE

CLEARING LINE

30 31 32

GENERAL

ph

STORAGE TANK FILLER CAP

2

PUB2E

cgr

JERSEY BARRIER

fc

B

WATER FRONT BUFFER

NATURAL WOODLAND BUFFER

POTENTIAL WET AREA SYMBOL

MONITORING WELL

II

I.S.

I

I.S.INVASIVE SPECIES LABEL

TP

PRIME WETLAND

WETLAND DESIGNATION AND TYPE

293

3

102

BRIDGE CROSSINGS

STREAM OVERPASS

TREE OR STUMP (CROSS-SECTIONS)

(show station, circumference in feet & type)

existing PROPOSED

500 YEAR FLOODPLAIN BOUNDARY

100 YEAR FLOODPLAIN BOUNDARY

FLOODPLAIN / FLOODWAY

FLOODWAY

GROUND LIGHT/LAMP POST gl lp

FENCE (LABEL TYPE)

CURB (LABEL TYPE)

w

mon

SHEET 1 OF 2

NON-JURISDICTIONAL DRAINAGE AREA

COWARDIN DISTINCTION LINE

PRIME WETLAND 100' BUFFER

WIDTH AT BANK FULL

MEAN HIGH WATER

MEAN LOW WATER

DEVELOPED TIDAL BUFFER ZONE

REFERENCE LINE

SHORELAND - WETLAND

GUARDRAIL (label type)bgr

NORMAL HIGH WATER

HIGHEST OBSERVABLE TIDE LINE

PROTECTED SHORELAND

REVISION DATE

11-21-2014

STATE PROJECT NO. SHEET NO. TOTAL SHEETS

24497

DGN

STDSym.dgn

STATE OF NEW HAMPSHIRE

DEPARTMENT OF TRANSPORTATION BUREAU OF HIGHWAY DESIGN

STANDARD SYMBOLS

2 8

TELEPHONE POLE

POWER POLE

JOINT OCCUPANCY

MISCELLANEOUS/UNKNOWN POLE

POLE STATUS:

AS APPLICABLE e.g.:

LIGHT POLE

LIGHT ON POWER POLE

LIGHT ON JOINT POLE

(plot point at face

not center of symbol)

RIGHT-OF-WAY LINE

PROPERTY LINE

TOWN LINE

COUNTY LINE

STATE LINE

BOUND

DRILL HOLE IN ROCK

NATIONAL FOREST

(label type)

BOW

CONCORD

COOS

GRAFTON

MAINE

IRON PIPE OR PIN

NHDOT PROJECT MARKER

PEDESTAL WITH PEDESTRIAN SIGNAL

HEADS AND PUSH BUTTON UNIT

CONTROLLER CABINET

METER PEDESTAL

PULL BOX

LOOP DETECTOR (QUADRUPOLE)

LOOP DETECTOR (RECTANGULAR)

(label size)

(label size)

PROPERTY PARCEL NUMBER

HISTORIC PROPERTY

WATER SHUT OFF

GAS SHUT OFF

RAILROAD

RAILROAD SIGN

RAILROAD SIGNAL

(label ownership)

HYDRANT

UTILITY JUNCTION BOX

MAST ARM (existing)

OPTICOM RECEIVER

OPTICOM STROBE

MANHOLE

CATCH BASIN

DROP INLET

DRAINAGE PIPE (existing)

EROSION CONTROL/ STONE

SLOPE PROTECTION

(existing)

DRAINAGE

BOUNDARIES / RIGHT-OF-WAY

UTILITIES

di

cb (PROPOSED)

RCP

g os

H Y D

12

DRAINAGE PIPE (PROPOSED)

HEADER (existing & PROPOSED)

REMOVE, LEAVE, PROPOSED, OR TEMPORARYEND SECTION (existing & PROPOSED)

OPEN DITCH (PROPOSED)

SEWER

TELEPHONE

ELECTRICAL

GAS

30' MA

NEW HAMPSHIRE

S/L T/L

bnd

TOWN LINE MONUMENT

STATE LINE/

of flow

direction

show& type)

(label size

& type)

(label size

W/ FLUSHING BASIN

UNDERDRAIN (PROPOSED)

STAN'S

SIGN

MANHOLES

TRAFFIC SIGNAL

RR RIGHT-OF-WAY LINE

PROPERTY LINE (COMMON OWNER)

TAX MAP AND LOT NUMBER

protection)

(with stone outlet

6.80 Ac.±

1642/341

14

156

note if abandoned)

label size, type and

(on existing lines

UNDERGROUND UTILITIES

W/ FLUSHING BASINUNDERDRAIN (existing)

L P+04

25.0'

R T+04

25.0'

jb

M H T

M H E

M H S

M H G

SOG

W

SO

m h

e

m h

g

hy d

m ht

m h

s

wso

cc

pb

mp

PB

MP

(NOTE ANGLE FROM Å)

FENCING NOTE

CLEARING AND GRUBBING AREA

DRAINAGE NOTE

GUARDRAIL NOTE

G-1

B-1

LIGHTING NOTE

EROSION CONTROL NOTE

A

1

A

A

1

A

CONSTRUCTION NOTES

(PROPOSED)

GUY POLE OR PUSH BRACE

BENCH MARK / SURVEY DISK

METAL or PLASTIC

CURB MARK NUMBER - GRANITE

CURB MARK NUMBER - BITUMINOUS

fb

TELEPHONE

ELECTRIC

GAS

LIGHTING

FIBER OPTIC

INTELLIGENT TRANSPORTATION SYSTEM

WATER

SEWER

JB

CC

SIGNAL CONDUIT

PROPOSEDexistingPROPOSEDexisting

dh

ip

1TRAFFIC SIGNAL NOTE

SHEET 2 OF 2

m h

uUNKNOWN

m hd

TRAFFIC SIGNALS / ITS

ITS NOTE 1

FIBER OPTIC DELINEATOR

s vf

ITSitsVS F

FODfod

VARIABLE SPEED LIMIT SIGN

DYNAMIC MESSAGE SIGN

FIBER OPTIC SPLICE VAULT

ROAD AND WEATHER INFO SYSTEM

CAMERA POLE (CCTV)

ITS EQUIPMENT CABINET

CONSERVATION LAND

OVERHEAD WIRE

(label type)

REVISION DATE

9-1-2016


24497

DGN

STDSym.dgn



STANDARD SYMBOLS

3 8

w

post

post

post

post

post

postmd

mb

lp

lp

lplp

ip

ip

glgl

gl

gl

gl

glgl

gl

gl

gl

glgl

gl

bnd

bnd

bnd

bnd

an

an

an

1105.6

16

TRUST

2010 FAMILY

LOVETT-RETZ

n/f

REALTY TRUST

STONY HILL

n/f

REALTY TRUST

STONY HILL

n/f

CORPORATION

DEVELOPMENT

MOUNTAIN

LAFAYETTE

n/f

GARY R.

POWELL,

n/f

FAMILY TRUST

DAVID SYMMES

1

2'c

.5'c

4.3'c

2'c

benchgran

lawn

stre

am

5.7' from ep

tree face

w/chevron

w/chevron

brushb

rush

State park"

Franconia Notch

in Mtn.Tw

"So. Franconia

hdr

stone

Symmes"

David and Jean

"1421

SC 203

+09.22

204

205

CS 205

+55.00

206 207 208 209 305 210 211

PC

21

0+

76.

94

PT 305

+67.42

212

PCC 304+23.00

PC 303+05.38

302

303

304

305

ST

20

7+

05.

00

R = 1050.00'

T = 123.46'

Xs= 149.92

Ls= 150.00'

E = 7.23'

Lc= 245.79'

Dc= 5°27'24.27"

Sc= 396.86

Ç = 13°24'42.90" RT

E = 969600.34

N = 621248.79

PI= 204+32.67

PROFILE ROAD (NH 18)

CURVE# 1

R = 5729.58'

T = 143.15'

E = 1.79'

Lc= 286.25'

Dc= 1°00'00.00"

Ç = 2°51'44.94" RT

E = 969342.55

N = 621993.70

PI= 212+20.09

PROFILE ROAD (NH 18)

CURVE# 2

R = 1800.00'(1) R = 400.00'(2)

T = 58.83'(1) T = 73.00'(2)

E = 7.57'

Lc= 117.63'(1) Lc=144.42'(2)

Dc= 3°10'59.16"(1) Dc= 14°19'26.20"(2)

Ç = 24°25'48.28" RT

E = 969543.08

N = 621622.55

PCC = 304+23.00

BUTTERHILL ROAD (NH 141)

CURVE# 1

63A

psnh

64psnh78

net

15T

G3

psnh

77

net

62S

79

net

61

130

psnh

75

1

net

76

1

net

•45

62

130

psnh

6T

64 PB

psnhbrac

epush

not in u

sepole w/mete

rtemp wood

fp1/74

fp1G

60

130

psnh

(NH 18)

PROFILE ROAD12'

12'

089/099

BRIDGE NO.

LAF

AYETTE BR

OO

K

(N

H 141)

BUTTER

HILL R

OA

D

12'

12'

NH 141 (BUTTERHILL ROAD)

> CONSTRUCTION

NH 18 (PROFILE ROAD)

> CONSTRUCTION

POND

RECONSTRUCTION

SWALE

3

4

1 2

1

RADIUS = 9'-0"

BUTTERHILL ROAD STA 305+67.42

PROFILE ROAD STA 209+27.60 =

RIPRAP (TYP)

END TRANSITION

DEPTH CONSTRUCTION

BEGIN FULL

STA 206+50

BEGIN TRANSITION

DEPTH CONSTRUCTION

END FULL

STA 210+50

END TRANSITION

DEPTH CONSTRUCTION

BEGIN FULL

STA 303+50

BEGIN TRANSITION

BEGIN CONSTRUCTION

LIMIT OF WORK

STA 303+00

TO REMAIN

LILAC BUSHES

L

22.0'

P+15

R

R

21.0'

P+75

R

L

20.0'

P+37

R

26.0'

P+62

(TYP)

RADIUS = 5'-0"

BEGIN MILL AND OVERLAY

BEGIN CONSTRUCTION

LIMIT OF WORK

STA 204+50

END MILL AND OVERLAY

BEGIN TRANSITION

STA 206+00

END MILL AND OVERLAY

END CONSTRUCTION

LIMIT OF WORK

STA 212+25

BEGIN MILL AND OVERLAY

END TRANSITION

STA 211+00

APPROACH CURB

GRANITE


SH

EE

T

CH

EC

KE

D

AS

BUI

LT

DE

TAI

LS

DA

TE

DA

TE

DA

TE

DA

TE

NU

MB

ER

DA

TE

ST

ATI

ON

ST

ATI

ON

DE

SC

RI

PTI

ON

RE

VI

SI

ON

S

AF

TE

R

PR

OP

OS

AL

24497

DGN

24497_4pl.dgn


SD

R

PR

OC

ES

SE

D

NE

W

DE

SI

GN


NA

ME

1

NA

ME

2

NA

ME

3

DA

TE

1

DA

TE

2

DA

TE

3

N

SCALE IN FEET

30 0 30 60

DRAINAGE NOTE

1

GUARDRAIL TABLE

LF

25

275

U

1

1

(STEEL POST)

EAGRT, TL 2)

(TERMINAL UNIT TYPE

BEAM GUARDRAIL

GENERAL PLAN

4

ITEM 606.1255

STA 211+67.0 TO STA 211+92.0, LT

STA 208+92.0 TO STA 211+67.0, LT

STA 206+97.1 TO STA 207+22.1, RT

STA 206+72.1 TO STA 206+97.1, RT

LOCATION

1

2

3

4

ITEM 606.180016" INV. @ OUTLET = 1089.0

6" INV. @ +50.0, RT 12.0' = 1089.9

CONST. UL-2 HEADWALL @ +58.3, RT 21.8'

CONST. 110 LF X 6" PERF. CORR. POLY. PIPE UND., S = 1.6%

STA. 207+58.3, RT 21.8' TO STA. 206+50.0, RT 12.0'

(STEEL POST)

8" OFFSET BLOCK

GUARDRAIL WITH

31" W-BEAM

8

STATE OF NEW HAMPSHIREDEPARTMENT OF TRANSPORTATION * BUREAU OF BRIDGE DESIGN

REVISIONS AFTER PROPOSAL

DESIGNED

DRAWN

QUANTITIES

REV. DATE

ISSUE DATE FEDERAL PROJECT NO. SHEET NO. TOTAL SHEETS

FILE NUMBER

OF

BRIDGE SHEET

DATEBY

CHECKED

CHECKED

CHECKED

DATEBY

KDW

JAW

JAW

8

\\nh-b

ed\projects\5

2380.0

9\cad\st\pla

nset\

WE

TL

AN

D\2

4497_5pln

&el0

1.d

gn

SHEET SCALEDRAWING NAMEPLOT DATE

AS NOTED

BRIDGE NO. 089/099 STATE PROJECT 24497

4/27/2018 24497_5pln&el01.dgn

SMH

TOWN FRANCONIA

LOCATION NH 18 OVER LAFAYETTE BROOK

12/17

12/17

12/17

12/17

PLAN

305207 208 209

305

N

TO FRANCONIA

TO LINCOLNFG EL = 1093.47

STA 207+82.75

FG EL = 1092.35

STA 208+36.87

DRAINAGE AREA

DESIGN FLOOD VELOCITY (100 YR) 15 FPS

200 SQ. FEET

HYDRAULIC DATA

DESIGN FLOOD DISCHARGE (100 YR)

DESIGN FLOOD ELEVATION (100 YR)

6.5 SQ. MILES

1610 CFS

1087.3 FEET

LAF

AYETTE BR

OO

K

> BRG ABUT A (EXP) > BRG ABUT B (EXP)

AND ROUTE

3

TO I-

93

ELEVATION

HYDRAULIC NOTES

BRIDGE FULL WATERWAY OPENING PERPENDICULAR TO RIVER


> CONSTRUCTION

CURB (TYP)

FACE OF

2.

1.

BRIDGE PLAN AND ELEVATION

CAP AT PILASTER

CONCRETE

TO REMAIN (TYP)

AND STONE FACING

EXISTING PILASTER

BRIDGE SEAT

SH

OU

LD

ER

1'-0"

LA

NE

11'-0"

LA

NE

11'-0"

SH

OU

LD

ER

1'-

0"

45° (TYP)

END OF DECK (TYP)

OU

T-

TO-

OU

T

29'-2"

CU

RB-

TO-

CU

RB

24'-6"

(> BRG TO > BRG)

TOE OF SLOPE (TYP)

TOP OF SLOPE (TYP)


> CONSTRUCTION

(T

YP)

11'-0"

SCALE IN FEET

10 0 10 20

AT PILASTER (TYP)

CONCRETE CAP

SCALE: 1" = 10'

SCALE: 1" = 10'

5

(1087.3)

Q100

BRIDGE RAIL (TYP)

PRECAST CONCRETE

UNDERDRAIN

(T

YP)

(T

YP)

BOX BEAM

PRECAST CONCRETE

(C

AP

ST

ON

E)

(CAPSTONE) (TYP)

FACE OF RAIL

1960 CFS

2.5 FEET

3.5 FEET

SCOUR CHECK DISCHARGE (500 YR)

ANTICIPATED DEPTH OF SCOUR (100 YR)

ANTICIPATED DEPTH OF SCOUR (500 YR)

CAPSTONES (TYP)

RESET WINGWALL

RESET CAPSTONES (TYP)

RAIL (SE, NW)

BRIDGE APPROACH

TO REMAIN (TYP)

ABUTMENT AND WINGWALL

CAPSTONES (TYP)

RESET

GRANITE APPROACH CURB

(TYP) (SE, NW)

BRIDGE APPROACH RAIL

FLOOD DISCHARGE ELEVATION.

SURVEYED WATER SURFACE ELEVATION IS SIMILAR TO THE 2 YEAR DESIGN

COMPUTED SCOUR DEPTHS ARE LESS THAN 4 FEET.

LEVEL OF PROTECTION TO STRUCTURES AND DOWN-GRADIENT SENSITIVE RECEPTORS.

DROP INLET SEDIMENT BARRIERS SHOULD NEVER BE USED AS THE PRIMARY MEANS OF SEDIMENT CONTROL AND SHOULD ONLY BE USED TO PROVIDE AN ADDITIONAL 8.4.

CLEAN CATCH BASINS, DRAINAGE PIPES, AND CULVERTS IF SIGNIFICANT SEDIMENT IS DEPOSITED.8.3.

INSTALL SEDIMENT BARRIERS AND SEDIMENT TRAPS AT INLETS TO PREVENT SEDIMENT FROM ENTERING THE DRAINAGE SYSTEM.8.2.

DIVERT SEDIMENT LADEN WATER AWAY FROM INLET STRUCTURES TO THE EXTENT POSSIBLE.8.1.

PROTECT STORM DRAIN INLETS: 8.

DETENTION BASINS SHALL BE DESIGNED AND CONSTRUCTED TO ACCOMMODATE A 2 YEAR STORM EVENT.12.7.

ALL AREAS THAT CAN BE STABILIZED SHALL BE STABILIZED PRIOR TO OPENING UP NEW TERRITORY.12.6.

GRAVEL, OR CRUSHED STONE BASE TO HELP MINIMIZE EROSION ISSUES.

FOR HAUL ROADS ADJACENT TO SENSITIVE ENVIRONMENTAL AREAS OR STEEPER THAN 5%, THE DEPARTMENT WILL CONSIDER USING EROSION STONE, CRUSHED 12.5.

AREAS WHERE HAUL ROADS ARE CONSTRUCTED AND STORMWATER CANNOT BE TREATED THE DEPARTMENT WILL CONSIDER INFILTRATION.12.4.

SLOPES 3:1 OR FLATTER WILL RECEIVE TURF ESTABLISHMENT ALONE.12.3.

SLOPES STEEPER THAN 3:1 WILL RECEIVE TURF ESTABLISHMENT WITH MATTING.12.2.

STRATEGIES.

THE CONTRACTOR SHALL COMPLY WITH RSA 485:A:17 AND ENV-WQ 1500; ALTERATION OF TERRAIN FOR CONSTRUCTION AND USE ALL CONVENTIONAL BMP 12.1.

STRATEGIES SPECIFIC TO OPEN AREAS LESS THAN 5 ACRES:12.

TABLE 1

GUIDANCE ON SELECTING TEMPORARY SOIL STABILIZATION MEASURES

EROSION CONTROL STRATEGIES

NOTES:

2. PRODUCTS CONTAINING POLYACRYLAMIDE (PAM) SHALL NOT BE APPLIED DIRECTLY TO OR WITHIN 100 FEET OF ANY SURFACE

3. ALL EROSION CONTROL BLANKETS SHALL BE MADE WITH WILDLIFE FRIENDLY BIODEGRADABLE NETTING.

1

SLOPES

CHANNELS

APPLICATION AREAS DRY MULCH METHODS HYDRAULICALLY APPLIED MULCHES2

ROLLED EROSION CONTROL BLANKETS3

HMT WC SG CB HM SMM BFM FRM SNSB DNSB DNSCB DNCB

STEEPER THAN 2:1 NO NO YES NO NO NO NO YES NO NO NO YES

2:1 SLOPE YES YES YES YES NO NO YES YES NO YES YES YES

3:1 SLOPE YES YES YES YES NO YES YES YES YES YES YES NO

4:1 SLOPE YES YES YES YES YES YES YES YES YES YES NO NO

WINTER STABILIZATION 4T/AC YES YES YES NO NO YES YES YES YES YES YES

LOW FLOW CHANNELS NO NO NO NO NO NO NO NO NO NO YES YES

HIGH FLOW CHANNELS NO NO NO NO NO NO NO NO NO NO NO YES

ABBREV. STABILIZATION MEASURE ABBREV. STABILIZATION MEASURE ABBREV. STABILIZATION MEASURE

HMT HAY MULCH & TACK HM HYDRAULIC MULCH SNSB SINGLE NET STRAW BLANKET

WC WOOD CHIPS SMM STABILIZED MULCH MATRIX DNSB DOUBLE NET STRAW BLANKET

SG STUMP GRINDINGS BFM BONDED FIBER MATRIX DNSCB 2 NET STRAW-COCONUT BLANKET

CB COMPOST BLANKET FRM DNCB 2 NET COCONUT BLANKET

REVISION DATE

12-21-2015

WATER WITHOUT PRIOR WRITTEN APPROVAL FROM THE NH DEPARTMENT OF ENVIRONMENTAL SERVICES.

1. ALL SLOPE STABILIZATION OPTIONS ASSUME A SLOPE LENGTH \10 TIMES THE HORIZONTAL DISTANCE COMPONENT OF THE SLOPE, IN FEET.

FIBER REINFORCED MEDIUM

GENERAL CONSTRUCTION PLANNING AND SELECTION OF STRATEGIES TO CONTROL EROSION AND SEDIMENT ON HIGHWAY CONSTRUCTION PROJECTS

SWEEP ALL CONSTRUCTION RELATED DEBRIS AND SOIL FROM THE ADJACENT PAVED ROADWAYS AS NECESSARY.7.2.

INSTALL AND MAINTAIN CONSTRUCTION EXITS, ANYWHERE TRAFFIC LEAVES A CONSTRUCTION SITE ONTO A PUBLIC RIGHT-OF-WAY.7.1.

ESTABLISH STABILIZED CONSTRUCTION EXITS:7.

BEST MANAGEMENT PRACTICES (BMP) BASED ON AMOUNT OF OPEN CONSTRUCTION AREA

1 1

HYDROLOGY BEYOND THE PERMITTED AREA.

DIVERT OFF-SITE WATER THROUGH THE PROJECT IN AN APPROPRIATE MANNER SO NOT TO DISTURB THE UPSTREAM OR DOWNSTREAM SOILS, VEGETATION OR 5.5.

AND DISCHARGE LOCATIONS PRIOR TO USE.

STABILIZE, TO APPROPRIATE ANTICIPATED VELOCITIES, CONVEYANCE CHANNELS OR PUMPING SYSTEMS NEEDED TO CONVEY CONSTRUCTION STORMWATER TO BASINS 5.4.

CONSTRUCT IMPERMEABLE BARRIERS AS NECESSARY TO COLLECT OR DIVERT CONCENTRATED FLOWS FROM WORK OR DISTURBED AREAS.5.3.

LOCATION.

DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM DISTURBED AREAS, SLOPES, AND AROUND ACTIVE WORK AREAS AND TO A STABILIZED OUTLET 5.2.

DIVERT OFF SITE RUNOFF OR CLEAN WATER AWAY FROM THE CONSTRUCTION ACTIVITY TO REDUCE THE VOLUME THAT NEEDS TO BE TREATED ON SITE.5.1.

CONTROL STORMWATER FLOWING ONTO AND THROUGH THE PROJECT:5.

WITH SECTION 2.1.2.1. OF THE 2012 NPDES CONSTRUCTION GENERAL PERMIT.

WHEN WORK IS PERFORMED WITHIN 50 FEET OF SURFACE WATERS (WETLAND, OPEN WATER OR FLOWING WATER), PERIMETER CONTROL SHALL BE ENHANCED CONSISTENT 3.5.

WHEN WORK IS PERFORMED IN AND NEAR WATER COURSES, STREAM FLOW DIVERSION METHODS SHALL BE IMPLEMENTED PRIOR TO ANY EXCAVATION OR FILLING.3.4.

PROTECT AND MAXIMIZE EXISTING NATIVE VEGETATION AND NATURAL FOREST BUFFERS BETWEEN CONSTRUCTION ACTIVITY AND SENSITIVE AREAS.3.3.

CONSTRUCTION SHALL BE SEQUENCED TO LIMIT THE DURATION AND AREA OF EXPOSED SOILS.3.2.

CLEARLY FLAG AREAS TO BE PROTECTED IN THE FIELD AND PROVIDE CONSTRUCTION BARRIERS TO PREVENT TRAFFICKING OUTSIDE OF WORK AREAS.3.1.

PLAN ACTIVITIES TO ACCOUNT FOR SENSITIVE SITE CONDITIONS: 3.

MET.

CRITICAL PATH METHOD SCHEDULE (CPM), AND THE CONTRACTOR HAS ADEQUATE RESOURCES AVAILABLE TO ENSURE THAT ENVIRONMENTAL COMMITMENTS WILL BE

MONTHS, UNLESS THE CONTRACTOR DEMONSTRATES TO THE DEPARTMENT THAT THE ADDITIONAL AREA OF DISTURBANCE IS NECESSARY TO MEET THE CONTRACTORS

, OR EXCEED ONE ACRE DURING WINTER TH

THROUGH NOVEMBER 30ST

THE MAXIMUM AMOUNT OF DISTURBED EARTH SHALL NOT EXCEED A TOTAL OF 5 ACRES FROM MAY 14.3.

UTILIZE TEMPORARY MULCHING OR PROVIDE ALTERNATE TEMPORARY STABILIZATION ON EXPOSED SOILS IN ACCORDANCE WITH TABLE 1.4.2.

SHALL BE USED TO REDUCE THE AMOUNT AND DURATION OF SOIL EXPOSED TO THE ELEMENTS AND VEHICLE TRACKING.

CONSTRUCTION SHALL BE SEQUENCED TO LIMIT THE DURATION AND AREA OF EXPOSED SOILS. MINIMIZE THE AREA OF EXPOSED SOIL AT ANY ONE TIME. PHASING 4.1.

MINIMIZE THE AMOUNT OF EXPOSED SOIL:4.

UP AND DOWN THE SLOPE, DISKED, HARROWED, DRAGGED WITH A CHAIN OR MAT, MACHINE-RAKED, OR HAND-WORKED TO PRODUCE A RUFFLED SURFACE.

THE OUTER FACE OF THE FILL SLOPE SHOULD BE IN A LOOSE RUFFLED CONDITION PRIOR TO TURF ESTABLISHMENT. TOPSOIL OR HUMUS LAYERS SHALL BE TRACKED 6.4.

CONVEY STORMWATER DOWN THE SLOPE IN A STABILIZED CHANNEL OR SLOPE DRAIN.6.3.

CONSIDER HOW GROUNDWATER SEEPAGE ON CUT SLOPES MAY IMPACT SLOPE STABILITY AND INCORPORATE APPROPRIATE MEASURES TO MINIMIZE EROSION.6.2.

OUTLET OR CONVEYANCE.

INTERCEPT AND DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED AND NEWLY ESTABLISHED AREAS AND SLOPES TO A STABILIZED 6.1.

PROTECT SLOPES:6.

MONITORING OF THE SYSTEM.

DEMONSTRATED EXPERIENCE IN THE DESIGN OF FLOCCULANT TREATMENT SYSTEMS. THE CONSULTANT WILL ALSO BE RESPONSIBLE FOR THE IMPLEMENTATION AND

TREAT AND RELEASE WATER CAPTURED IN STORM WATER BASINS. THE CONTRACTOR SHALL ALSO RETAIN THE SERVICES OF AN ENVIRONMENTAL CONSULTANT WHO HAS

THE CONTRACTOR WILL BE REQUIRED TO HAVE AN APPROVED DESIGN IN ACCORDANCE WITH ENV-WQ 1506.12 FOR AN ACTIVE FLOCCULANT TREATMENT SYSTEM TO 14.3.

AMOUNT OF SEDIMENT IN THE STORMWATER TREATMENT BASINS.

THE DEPARTMENT ANTICIPATES THAT SOIL BINDERS WILL BE NEEDED ON ALL SLOPES STEEPER THAN 3:1, IN ORDER TO MINIMIZE EROSION AND REDUCE THE 14.2.

TREATMENT OPTIONS USED FOR UNDER 5 ACRES AND BETWEEN 5 AND 10 ACRES WILL BE UTILIZED.

THE CONTRACTOR SHALL COMPLY WITH RSA 485:A:17 AND ENV-WQ 1500 ALTERATION OF TERRAIN AND SHALL USE CONVENTIONAL BMP STRATEGIES AND ALL 14.1.

STRATEGIES SPECIFIC TO OPEN AREAS OVER 10 ACRES:14.

ALSO CONSIDER A SOIL BINDER IN ACCORDANCE WITH THE NHDES APPROVALS OR REGULATIONS.

SLOPES 3:1 OR FLATTER WILL RECEIVE TURF ESTABLISHMENT OR OTHER TEMPORARY SOIL STABILIZATION MEASURES DETAILED IN TABLE 1. THE CONTRACTOR MAY 13.4.

BONDED FIBER MATRIXES (BFMS) OR FLEXIBLE GROWTH MEDIUMS (FGMS) MAY BE UTILIZED, IF MEETING THE NHDES APPROVALS AND REGULATIONS.

THE CONTRACTOR MAY ALSO CONSIDER A SOIL BINDER IN ACCORDANCE WITH THE NHDES APPROVALS OR REGULATIONS. OTHER ALTERNATIVE MEASURES, SUCH AS

SLOPES STEEPER THAN A 3:1 WILL RECEIVE TURF ESTABLISHMENT WITH MATTING OR OTHER TEMPORARY SOIL STABILIZATION MEASURES DETAILED IN TABLE 1. 13.3.

DETENTION BASINS WILL BE CONSTRUCTED TO ACCOMMODATE THE 2-YEAR 24-HOUR STORM EVENT AND CONTROL A 10-YEAR 24-HOUR STORM EVENT.13.2.

TREATMENT OPTIONS USED FOR UNDER 5 ACRES WILL BE UTILIZED.

THE CONTRACTOR SHALL COMPLY WITH RSA 485:A:17 AND ENV-WQ 1500 ALTERATION OF TERRAIN AND SHALL USE CONVENTIONAL BMP STRATEGIES AND ALL 13.1.

STRATEGIES SPECIFIC TO OPEN AREAS BETWEEN 5 AND 10 ACRES:13.

LOSS UNTIL PERMANENT VEGETATION IS ESTABLISHED.

SOIL TACKIFIERS MAY BE APPLIED IN ACCORDANCE WITH THE MANUFACTURER'S SPECIFICATIONS AND REAPPLIED AS NECESSARY TO MINIMIZE SOIL AND MULCH 9.4.

AND PRIOR TO SEPTEMBER 15, OF ANY GIVEN YEAR, IN ORDER TO ACHIEVE VEGETATIVE STABILIZATION PRIOR TO THE END OF THE GROWING SEASON.

EROSION CONTROL SEED MIX SHALL BE SOWN IN ALL INACTIVE CONSTRUCTION AREAS THAT WILL NOT BE PERMANENTLY SEEDED WITHIN TWO WEEKS OF DISTURBANCE 9.3.

2012 CGP. (SEE TABLE 1 FOR GUIDANCE ON THE SELECTION OF TEMPORARY SOIL STABILIZATION MEASURES.)

IN ALL AREAS, TEMPORARY SOIL STABILIZATION MEASURES SHALL BE APPLIED IN ACCORDANCE WITH THE STABILIZATION REQUIREMENTS (SECTION 2.2) OF THE 9.2.

WITHIN THREE DAYS OF THE LAST ACTIVITY IN AN AREA, ALL EXPOSED SOIL AREAS, WHERE CONSTRUCTION ACTIVITIES ARE COMPLETE, SHALL BE STABILIZED. 9.1.

SOIL STABILIZATION: 9.

LINE.

SLOPES. THE PERIMETER CONTROLS SHALL BE INSTALLED ON THE FILL SLOPE TO MINIMIZE THE POTENTIAL FOR FILL SLOPE SEDIMENT DEPOSITS IN THE DITCH

CHANNEL PROTECTION MEASURES SHALL BE SUPPLEMENTED WITH PERIMETER CONTROL MEASURES WHEN THE DITCH LINES OCCUR AT THE BOTTOM OF LONG FILL 11.9.

PLAN, DEVELOPED BY A QUALIFIED ENGINEER OR A CPESC SPECIALIST, IS REVIEWED AND APPROVED BY THE DEPARTMENT.

THE AREA OF EXPOSED SOIL SHALL BE LIMITED TO ONE ACRE, OR THAT WHICH CAN BE STABILIZED AT THE END OF EACH DAY UNLESS A WINTER CONSTRUCTION

WINTER EXCAVATION AND EARTHWORK ACTIVITIES NEED TO BE LIMITED IN EXTENT AND DURATION, TO MINIMIZE POTENTIAL EROSION AND SEDIMENTATION IMPACTS. 11.8.

PERMANENT DITCHES SHALL BE DIRECTED TO DRAIN TO SEDIMENT BASINS OR STORM WATER COLLECTION AREAS.

TEMPORARY AND PERMANENT DITCHES SHALL BE CONSTRUCTED, STABILIZED AND MAINTAINED IN A MANNER THAT WILL MINIMIZE SCOUR. TEMPORARY AND 11.7.

PLACE TEMPORARY STONE INLET PROTECTION OVER INLETS IN AREAS OF SOIL DISTURBANCE THAT ARE SUBJECT TO SEDIMENT CONTAMINATION.

CATCH BASINS: CARE SHALL BE TAKEN TO ENSURE THAT SEDIMENTS DO NOT ENTER ANY EXISTING CATCH BASINS DURING CONSTRUCTION. THE CONTRACTOR SHALL 11.6.

THE CONTRACTOR SHALL BE RESPONSIBLE FOR EROSION AND SEDIMENT CONTROL FOR ONE YEAR AFTER PROJECT COMPLETION.

VEGETATIVE STABILIZATION SHALL NOT BE CONSIDERED PERMANENTLY STABILIZED UNTIL VEGETATIVE GROWTH COVERS AT LEAST 85% OF THE DISTURBED AREA.

PERMANENT STABILIZATION MEASURES WILL BE CONSTRUCTED AND MAINTAINED IN LOCATIONS AS SHOWN ON THE CONSTRUCTION PLANS TO STABILIZE AREAS. 11.5.

STABILIZATION OF THE CONTRIBUTING DISTURBED AREA.

THE CONTRACTOR SHOULD UTILIZE STORM DRAIN INLET PROTECTION TO PREVENT SEDIMENT FROM ENTERING A STORM DRAINAGE SYSTEM PRIOR TO THE PERMANENT 11.4.

ACCORDANCE WITH THE GUIDANCE MEMO FROM THE NHDES CONTAINED WITHIN THE CONTRACT PROPOSAL AND THE EPA CONSTRUCTION GENERAL PERMIT.

AFTER ANY STORM EVENT GREATER THAN 0.25 IN. OF RAIN PER 24-HOUR PERIOD. EROSION AND SEDIMENT CONTROL MEASURES WILL ALSO BE INSPECTED IN

EROSION AND SEDIMENT CONTROL MEASURES WILL BE INSPECTED IN ACCORDANCE WITH SECTION 645 OF NHDOT SPECIFICATIONS, WEEKLY AND WITHIN 24 HOURS 11.3.

MEASURES (TEMPORARY EROSION CONTROL SEED MIX AND MULCH, SOIL BINDER) OR COVERED WITH ANCHORED TARPS.

ALL STOCKPILES SHALL BE CONTAINED WITH TEMPORARY PERIMETER CONTROLS. INACTIVE SOIL STOCKPILES SHOULD BE PROTECTED WITH SOIL STABILIZATION 11.2.

TACKIFIERS, AS APPROVED BY THE NHDES.

USE MECHANICAL SWEEPERS ON PAVED SURFACES WHERE NECESSARY TO PREVENT DUST BUILDUP. APPLY WATER, OR OTHER DUST INHIBITING AGENTS OR

USE TEMPORARY MULCHING, PERMANENT MULCHING, TEMPORARY VEGETATIVE COVER, AND PERMANENT VEGETATIVE COVER TO REDUCE THE NEED FOR DUST CONTROL. 11.1.

ADDITIONAL EROSION AND SEDIMENT CONTROL GENERAL PRACTICES:11.

EROSION, POLLUTION, AND TURBIDITY PRECAUTIONS.

THE CONTRACTOR IS DIRECTED TO REVIEW AND COMPLY WITH SECTION 107.1 OF THE CONTRACT AS IT REFERS TO SPILLAGE, AND ALSO WITH REGARDS TO 1.6.

)HTTP://DES.NH.GOV/ORGANIZATION/COMMISSIONER/LEGAL/RULES/INDEX.HTM(

THE CONTRACTOR SHALL COMPLY WITH RSA 485-A:17, AND ALL, PUBLISHED NHDES ALTERATION OF TERRAIN ENV-WQ 1500 REQUIREMENTS 1.5.

OF ENVIRONMENTAL SERVICES (NHDES).

MANUAL, VOLUME 3, EROSION AND SEDIMENT CONTROLS DURING CONSTRUCTION (DECEMBER 2008) (BMP MANUAL) AVAILABLE FROM THE NEW HAMPSHIRE DEPARTMENT

ALL STORM WATER, EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSTALLED AND MAINTAINED IN ACCORDANCE WITH THE NEW HAMPSHIRE STORMWATER 1.4.

THE SPECIAL ATTENTION ITEMS INCLUDED IN THE CONTRACT DOCUMENTS.

THE CONTRACTOR'S ATTENTION IS DIRECTED TO THE NHDES WETLAND PERMIT, THE US ARMY CORPS OF ENGINEERS PERMIT, WATER QUALITY CERTIFICATION AND 1.3.

GENERAL PERMIT (CGP).

AS ADMINISTERED BY THE ENVIRONMENTAL PROTECTION AGENCY (EPA). THIS PROJECT IS SUBJECT TO REQUIREMENTS IN THE MOST RECENT CONSTRUCTION

THIS PROJECT WILL BE SUBJECT TO THE US EPA'S NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) STORM WATER CONSTRUCTION GENERAL PERMIT 1.2.

REGULATIONS.

THESE GUIDELINES DO NOT RELIEVE THE CONTRACTOR FROM COMPLIANCE WITH ANY CONTRACT PROVISIONS, OR APPLICABLE FEDERAL, STATE, AND LOCAL 1.1.

ENVIRONMENTAL COMMITMENTS:1.

SURROUNDING ENVIRONMENT FROM AREAS OF UNSTABILIZED EARTH DISTURBING ACTIVITIES.

TEMPORARY SEDIMENT BASINS OR TRAPS SHALL BE PLACED AND STABILIZED AT LOCATIONS WHERE CONCENTRATED FLOW (CHANNELS AND PIPES) DISCHARGE TO THE 10.3.

CONSTRUCT AND STABILIZE DEWATERING INFILTRATION BASINS PRIOR TO ANY EXCAVATION THAT MAY REQUIRE DEWATERING.10.2.

STORMWATER RUNOFF FROM A 10-YEAR 24 HOUR STORM EVENT. ON-SITE RETENTION OF THE 10-YEAR 24-HOUR EVENT IS NOT REQUIRED.

TEMPORARY SEDIMENT BASINS USED TO TREAT STORMWATER RUNOFF FROM AREAS GREATER THAN 5-ACRES OF DISTURBANCE SHALL BE SIZED TO ALSO CONTROL

24-HOUR STORM EVENT FOR ANY AREA OF DISTURBANCE OR 3,600 CUBIC FEET OF STORMWATER RUNOFF PER ACRE OF DISTURBANCE, WHICHEVER IS GREATER.

TEMPORARY SEDIMENT BASINS (CGP-SECTION 2.1.3.2) OR SEDIMENT TRAPS (ENV-WQ 1506.10) SHALL BE SIZED TO RETAIN, ON SITE, THE VOLUME OF A 2-YEAR 10.1.

RETAIN SEDIMENT ON-SITE AND CONTROL DEWATERING PRACTICES:10.

.TH

THE REQUIREMENTS OF NO LESS THAN 30 DAYS PRIOR TO THE COMMENCEMENT OF WORK SCHEDULED AFTER NOVEMBER 30

(E) A SWPPP AMENDMENT SHALL BE SUBMITTED TO THE DEPARTMENT, FOR APPROVAL, ADDRESSING COLD WEATHER STABILIZATION (ENV-WQ 1505.05) AND INCLUDING

WINTER CONSTRUCTION PLAN HAS BEEN APPROVED BY NHDOT THAT MEETS THE REQUIREMENTS OF ENV-WQ 1505.02 AND ENV-WQ 1505.05.

(D) WINTER EXCAVATION AND EARTHWORK SHALL BE DONE SUCH THAT NO MORE THAN 1 ACRE OF THE PROJECT IS WITHOUT STABILIZATION AT ONE TIME, UNLESS A

INCOMPLETE ROAD SURFACES, WHERE WORK HAS STOPPED FOR THE SEASON, SHALL BE PROTECTED IN ACCORDANCE WITH TABLE 1.TH

AFTER NOVEMBER 30(C)

SHALL BE STABILIZED TEMPORARILY WITH STONE OR IN ACCORDANCE WITH TABLE 1.

, TH

, OR WHICH ARE DISTURBED AFTER OCTOBER 15TH

ALL DITCHES OR SWALES WHICH DO NOT EXHIBIT A MINIMUM OF 85% VEGETATIVE GROWTH BY OCTOBER 15(B)

, SHALL BE STABILIZED IN ACCORDANCE WITH TABLE 1. TH

15

, OR WHICH ARE DISTURBED AFTER OCTOBER TH

ALL PROPOSED VEGETATED AREAS WHICH DO NOT EXHIBIT A MINIMUM OF 85% VEGETATIVE GROWTH BY OCTOBER 15(A)

FOLLOWING REQUIREMENTS.

OF ANY YEAR SHALL BE CONSIDERED WINTER CONSTRUCTION AND SHALL CONFORM TO THE ST

AND MAY 1TH

CONSTRUCTION PERFORMED ANY TIME BETWEEN NOVEMBER 302.8.

TEMPORARY EROSION AND SEDIMENTATION CONTROL MEASURES SHALL REMAIN UNTIL THE AREA HAS BEEN PERMANENTLY STABILIZED.2.7.

A WATER TRUCK SHALL BE AVAILABLE TO CONTROL EXCESSIVE DUST AT THE DIRECTION OF THE CONTRACT ADMINISTRATOR.2.6.

BE REQUIRED.

ALL STOCKPILES SHALL BE CONTAINED WITH A PERIMETER CONTROL. IF THE STOCKPILE IS TO REMAIN UNDISTURBED FOR MORE THAN 14 DAYS, MULCHING WILL 2.5.

TEMPORARY SLOPE STABILIZATION CONFORMING TO TABLE 1 HAS BEEN PROPERLY INSTALLED (D)

A MINIMUM OF 3" OF NON-EROSIVE MATERIAL SUCH AS STONE OR RIP-RAP HAS BEEN INSTALLED;(C)

A MINIMUM OF 85% VEGETATED GROWTH HAS BEEN ESTABLISHED;(B)

BASE COURSE GRAVELS HAVE BEEN INSTALLED IN AREAS TO BE PAVED;(A)

AN AREA SHALL BE CONSIDERED STABLE IF ONE OF THE FOLLOWING HAS OCCURRED:2.4.

SPECIFICATIONS FOR ROAD AND BRIDGES CONSTRUCTION.

EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED IN ACCORDANCE WITH THE CONSTRUCTION GENERAL PERMIT AND SECTION 645 OF THE NHDOT 2.3.

SEDIMENTATION BEYOND PROJECT LIMITS THROUGHOUT THE PROJECT DURATION.

EROSION, SEDIMENTATION CONTROL MEASURES AND INFILTRATION BASINS SHALL BE CLEANED, REPLACED AND AUGMENTED AS NECESSARY TO PREVENT 2.2.

INSTALLED AS SHOWN IN THE BMP MANUAL AND AS DIRECTED BY THE STORMWATER POLLUTION PREVENTION PLAN (SWPPP) PREPARER.

PERIMETER CONTROLS SHALL BE INSTALLED PRIOR TO EARTH DISTURBING ACTIVITIES. PERIMETER CONTROLS AND STABILIZED CONSTRUCTION EXITS SHALL BE 2.1.

STANDARD EROSION CONTROL SEQUENCING APPLICABLE TO ALL CONSTRUCTION PROJECTS:2.


24497

DGN

EroStrat.dgn



86

WETLAND IMPACT PLANS

md

gl

an

an

1085

1085

1085

1085

1085

1085

1090

1090

1090

1090

1090

10901090

1090

1090

1095

1095

1095

1095

1095

1095

1095

N

WETLAND IMPACT SUMMARY

AREA

PERMANENT IMPACTS

SF

(NON-WETLAND)

N.H.W.B.IMPACTS

TEMPORARY

SF SF

LOCATIONCLASSIFICATION

WETLAND

A.C.O.E. (WETLAND)

N.H.W.B. AND

TOTAL

NOTES

WETLAND DESCRIPTION

SCALE IN FEET

10 0 10 20I

H

G

F

E

D

C

B

A

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

LAFAYETTE BROOK

POND 156

509

85

568

359

86

123

22

917 9917

SCALE: 1" = 10'

(SUPERSTRUCTURE NOT SHOWN)

R3RB2H

PUB2H

WETLAND IMPACT SUMMARY

LEGEND

= RIVERINE UPPER PERENNIAL ROCK BOTTOM RUBBLE PERMANENTLY FLOODED

= PALUSTRINE UNCONSOLIDATED BOTTOM SAND PERMANENTLY FLOODED

= EROSION CONTROL BARRIER

STRUCTURE

= TEMPORARY WATER DIVERSION

= TEMPORARY BED IMPACT

= TEMPORARY BANK IMPACT

= PERMANENT BED IMPACT

= PERMANENT BANK IMPACT

R3RB2H (BANK)

R3RB2H (BANK)

R3RB2H (BANK)

R3RB2H (BED)

R3RB2H (BED)

R3RB2H (BANK)

R3RB2H (BANK)

R3RB2H (BANK)

PUB2H (BANK)

RIPRAP FOR SLOPE STABILIZATION

TEMPORARY ACCESS FOR BRIDGE CONSTRUCTION AND SLOPE STABILIZATION

RIPRAP FOR SLOPE STABILIZATION AND BANK REPAIR

TEMPORARY ACCESS FOR BRIDGE CONSTRUCTION AND SLOPE STABILIZATION



RIPRAP FOR SLOPE STABILIZATION

TEMPORARY ACCESS FOR BRIDGE CONSTRUCTION

ROADWAY DRAINAGE IMPROVEMENTS - RECONSTRUCT DRAINAGE SWALE

PLAN

2011 ADJUSTMENT.

VERTICAL DATUM IS NAVD88. COORDINATES ARE NH STATE PLANE NAD83,

OF THE UNITED STATES (COWARDIN ET AL., 1979, REVISED 1985).

METHODOLOGY CLASSIFICATION OF WETLANDS AND DEEPWATER HABITATS

WETLANDS AND SURFACE WATERS WERE CLASSIFIED USING THE USFWS

FOR SECTIONS A-A AND B-B SEE WETLAND IMPACT SECTIONS SHEET.

320 CFS.

THE ESTIMATED 2-YEAR FREQUENCY DISCHARGE OF LAFAYETTE BROOK IS

CONTRACT.

QUALITY OF LAFAYETTE BROOK UNDER ITEM 699 OR SPECIFIC ITEMS IN

TO CONSTRUCTION AND MAINTAINED DURING CONSTRUCTION TO PROTECT WATER

EROSION AND TURBIDITY CONTROL MEASURES SHALL BE INSTALLED PRIOR

PERMIT.

IN THE WETLAND IMPACT PLANS AND DESCRIBED IN THE NHDES WETLAND

THERE SHALL BE NO IMPACTS TO WETLANDS OR STREAMS EXCEPT AS SHOWN

ENV-WT 101.07 AND RSA 483-B:4 (XI-e).

WETLAND SCIENTIST, KRISTOPHER WILKES (CWS#288) IN ACCORDANCE WITH

(R3RB2H) AND ADJACENT POND WAS DELINEATED ON JUNE 5, 2014 BY VHB

STREAM TOP OF BANK AND ORDINARY-HIGH-WATER ALONG LAFAYETTE BROOK

7.

6.

5.

4.

3.

2.

1.

160

160

(N

H 141)

BUTTER

HILL R

OA

D

206207 208 209

304

305

(NH 18)

PROFILE ROAD


> CONSTRUCTION


> CONSTRUCTION

BR

OO

K

LAF

AYETTE

ABUTMENT A

ABUTMENT B

6" UNDERDRAIN (TYP)

A

BARRIER PRIOR TO CONSTRUCTION

INSTALL EROSION CONTROL

STABILIZATION

RIPRAP SLOPE

STABILIZATION

RIPRAP SLOPE

A

A

STRUCTURE (TYP)

WATER DIVERSION

OF ITEM 503.1,

APPROXIMATE LOCATION

STABILIZATION

RIPRAP SLOPE

REALTY TRUST

STONY HILL

####

APPROX. EXIST. R.O.W.

APPR

OX. E

XIST. R.

O.

W.

APPR

OX. E

XIST. R.

O.

W.

FAMILY TRUST

DAVID SYMMES

####

UNDETERMINED

OWNER

####

APPROX. EXIST. R.O.W.

CORPORATION

DEVELOPMENT

MOUNTAIN

LAFAYETTE

####

BANK REPAIR

LIMIT OF CHANNEL

7:1

1.5:1

2:1

1.5:1

3:1

B

BPOND

B

C

F

E

D

G

H

I

SECTIONS SHEET)

(SEE WETLAND IMPACT

DRAINAGE SWALE

RECONSTRUCT

HEADWALL

CONCRETE

SEED (TYP)

LOAM AND

SEED (TYP)

LOAM AND



DESIGNED

DRAWN

QUANTITIES

REV. DATE


FILE NUMBER

OF

BRIDGE SHEET

DATEBY

CHECKED

CHECKED

CHECKED

DATEBY

KDW

JAW

JAW

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DESIGNED

DRAWN

QUANTITIES

REV. DATE


FILE NUMBER

OF

BRIDGE SHEET

DATEBY

CHECKED

CHECKED

CHECKED

DATEBY

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6:1 3:1

À SWALE

SECTION B-B SCALE:•" = 1'-0"

(E

XI

STI

NG)

TO

P

OF

BA

NK

EXISTING GROUND

VARIES (TYP)

FINISH GRADE

SECTION A-A

GEOTEXTILE

3'-0"

(MI

N)

3'-0"

(TOE)

3'-0"

SCALE:•" = 1'-0"

(TYPICAL RIPRAP SLOPE STABILIZATION DETAILS)

VARIES (TYP)

CHANNEL

VARIES (TYP)

EXISTING GROUND

(E

XI

STI

NG)

TO

P

OF

BA

NK

FINISH GRADE

SUMMARY SHEET FOR LOCATION)

(SEE WETLAND IMPACT

DIVERSION STRUCTURE

ITEM 503.1, WATER

SIZE AND GRADATION)

SPECIFICATIONS FOR STONE

(SEE NHDOT STANDARD

583.4, RIPRAP CLASS V

1'-0"

8

WETLAND IMPACT SECTIONS

[email protected] or (603) 271-2147 NHDES Wetlands Bureau, 29 Hazen Drive, PO Box 95, Concord, NH 03302-0095

www.des.nh.gov Permit Application – Revised 6/20/2016 - Valid until 12/31/2016 Page 5 of 5

14. IMPACT AREA: For each jurisdictional area that will be/has been impacted, provide square feet and, if applicable, linear feet of impact Permanent: impacts that will remain after the project is complete. Temporary: impacts not intended to remain (and will be restored to pre-construction conditions) after the project is complete.

JURISDICTIONAL AREA PERMANENT

Sq. Ft. / Lin. Ft. TEMPORARY

Sq. Ft. / Lin. Ft.

Forested wetland ATF ATFScrub-shrub wetland ATF ATFEmergent wetland ATF ATFWet meadow ATF ATFIntermittent stream ATF ATF

Perennial Stream / River 160 / 80 ATF 359 / 102 ATF

Lake / Pond / ATF / ATF

Bank - Intermittent stream / ATF / ATF

Bank - Perennial stream / River 761 / 134 ATF 632 / 145 ATF

Bank - Lake / Pond 156 / 54 ATF / ATF

Tidal water / ATF / ATF

Salt marsh ATF ATF

Sand dune ATF ATF

Prime wetland ATF ATF

Prime wetland buffer ATF ATF

Undeveloped Tidal Buffer Zone (TBZ) ATF ATF

Previously-developed upland in TBZ ATF ATF

Docking - Lake / Pond ATF ATF

Docking - River ATF ATF

Docking - Tidal Water ATF ATF

TOTAL 1,077 / 268 991 / 247

15. APPLICATION FEE: See the Instructions & Required Attachments document for further instruction Minimum Impact Fee: Flat fee of $ 200 Minor or Major Impact Fee: Calculate using the below table below

Permanent and Temporary (non-docking) 2,068 sq. ft. X $0.20 = $ 413.60

Temporary (seasonal) docking structure: sq. ft. X $1.00 = $

Permanent docking structure: sq. ft. X $2.00 = $

Projects proposing shoreline structures (including docks) add $200 = $

Total = $ 413.60

The Application Fee is the above calculated Total or $200, whichever is greater = $ 413.60

amendment cover letter - nh.gov · ref: 52380.09 page 2...

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