HomeMy WebLinkAboutSite Plan - Conservation (94) • ' TOWN OF SOUTH WINDSOR
INLAND WETLANDS, WATERCOURSES AND CONSERVATI e- y
CATION
ApP lication# � Date Received F EB 1 7 2006" 1. 72006
INSTRUCTIONS
CO.1SP_R�/t�1Innl c,(,% ,LION
1. Fifteen applications (15) with map and plans (2 copies) shall be submitted together with the
fee set forth in the Inland Wetlands, Watercourses and Conservation Regulations, Town of South
Windsor. (See Regulations, Section VII-X)
2. The South Windsor Inland Wetlands, Watercourses and Conservation Regulations should be
reviewed with respect to the standards and criteria for application Evaluation. (See Regulations,
Section VII-X)
3. The applicant understands that this application is to be considered complete only when all
information and documents required by the Agency have been submitted. The applicant shall
also complete the state filing form.
A. Applicant's Name: Dynamic Materials Corporation, c/o Robert Sanborn
Address: 283 Sullivan Avenue, South Windsor, CT 06074
Phone: (work)289-5634(fax) 528-2472
B. Legal owner's name: Dynamic Materials Corporation, c/o Robert Sanborn
Address 283 Sullivan Avenue, South Windsor, CT 06074
Phone: (work) 289-5634 (fax) 528-2472
(List additional owners, addresses, and phone numbers on back of application)
C. If the applicant is not the owner of the subject property, a letter by the owner(s) authorizing the
proposed regulated activity set forth in the application must accompany this form and will be
part of the application.
D. Project Name(if any): AMK Welding
1. Contact Person(if further information is needed)
Karen Isherwood, P.E., Design Professionals, Inc., 291-8755 phone
E. The geographical location of the property which is to be affected by the proposed regulated
activities including a description of the land in sufficient detail to allow identification of the
property on the Inland Wetland and Watercourse Map.
Assessor's map # 121 Parcel#43 Zone: I
F. Names of all abutting property owners from records in Town Clerk's office. (use separate sheet
if necessary)
See attached sheet.
G. Have you notified all abutting property owners (from records in Town Clerk's office) by
certified letter that an application is pending before the Agency? YES
** (you are required to supply a copy of the letter with the list of the names of the
abutters).**
H. Purpose and description of all proposed regulated activity(s) including amount of disturbance in
square feet and types of fill and the time element involved:
2550 sf direct wetlands disturbance related to building addition construction with the potential
for up to 2080 sf additional wetlands disturbance associated with construction activity within a
15' perimeter of the rear of the building; 19,780 sf of regulated upland review disturbance
associated with building and pavement improvements, additional 3720 sf of upland review
disturbance associated with grading activity for site improvements and water quality basin.
I. A class A-2 map of the property drawn to 1" = 40', showing the area to be developed, extent of
the wetlands and watercourses affected, topography, existing and proposed activities and names
and locations of adjacent property owners must be submitted.
J. Amount of regulated area disturbance and types of fill(including wetlands and regulated buffers).
2250 sf. direct wetlands disturbance; 2080 sf potential wetlands disturbance; 23,500 sf
regulated upland review disturbance.
K. Acreage of wetlands and watercourses in regulated areas to be altered:
_0.098 ac.
L. Acreage of wetlands and watercourses to be created: 0
M. Lineal feet of proposed stream alteration: 0
N. Total land area of project and percentage which is wetlands: 4.01 ac./27.3%
O. Identify all other permits or approvals that have been issued, applied for, or required with respect
to the proposed activity set forth in this application. (These may include but not be limited to,
local Planning &Zoning, Zoning Board of Appeals, D.E.P., F.E.M.A., D.O.T., The Army Corps
of Engineers, and any other State, Local or Federal Permits.) Army Corps of Engineers, PZC and
WPCA.
Ali
HIGHLAND SOILS LLC
February 3,2006
Mr.Peter DeMallie
Design Professionals,Inc. RECE-
165 South Satellite Road
South Windsor, CT FEB 2 3 2006
South Windsor
JW: "K WELDVVG INLP.1`l CONSERVATION
"�I;^.`. :AISSI Y
CONSLP.VATIUV COi:i?;iiSulON
283 SULLIVANA VENUE
SOUTH WINDSOR, CT
Dear Peter:
The inland wetland boundaries on the above-referenced property were field
delineated on November 26,2005. The wetlands were field delineated in accordance with
the standards of the National Cooperative Soil Survey and the definition of wetlands as
found in the Connecticut General Statutes,Chapter 440, Section 22A-38. I have reviewed
the-plans prepared by your office and have found the representation of the field delineated
wetlands to be substantially correct.
If you have any questions,or require additional information,please call me at(86(
742-5868.
Very truly yours,
John P.Ianni
Professional Soil Scientist
CPESC
cAdocuments and settingsUghland soilsuet2005\207.doc
P.O.Box 337, Storrs,Connecticut 06268 (860)742-5868
DESIGN PROFESSIONALS, INC.
civil engineers +planners + surveyors + gis +gps FEB 17 2006
5outh'vV�i u
Transmute �u e it
CONSERVATION � .J-,A,
February 17, 2006
Dear Current Abutting Property Owner
Re: AMK Welding DPI Project No. 02-1650
283 Sullivan Avenue
South Windsor, Connecticut
In accordance with regulations of the Planning&Zoning Commission and the Inland
Wetlands Agency, we are required to notify you that an application has been filed on the property
abutting yours and is subject to a hearing(s)by the Planning&Zoning Commission and the Inland
Wetlands Agency. The application and plans are on file with the South Windsor Planning
Department in the Town Hall.
As an abutting property owner you are invited to the hearing(s)to ask questions and/or
give comments, however, you are not required to attend. You may also submit written comments
regarding the application(s)prior to the meeting if you so desire. For further information
regarding the specific date this application will be heard, please contact Jeffrey Folger,
Environmental Planner, or Michele Lipe, Deputy Planning Director, at the South Windsor
Planning Department at 644-2511, ext. 253, 229 or 252, respectively. Thank you.
Sincerely,
DESIGN PROFESSIONALS, INC.
By: _
Peter R. DeMallie
Principal
cc: Robert C. Sanborn
Jeffrey Folger
Marcia Banach
Galen B. Semprebon, P.E.
165 South Satellite Road, South Windsor, Connecticut 06074
Tel: (860)291-8755 •Fax: (860)291-8757
DESIGN PROFESSIONALS, INC.
civil engineers .planners . surveyors . gis .gps
Abutter List
AMK Welding
DPI Project No. 02-1650
Map/Lot No. ProlleLU Owner Mailing Address
109/6 David Burnett 47 Patria Road
South Windsor, CT 06074
110/1 Raymond L. & Clara M. Hawkes 305 Sullivan Avenue
South Windsor, CT 06074
165 South Satellite Road, South Windsor, Connecticut 06074
Tel: (860)291-8755 9 Fax: (860)291-8757
Drainage Statement FEB 2 2 2006
AMK Welding
283 Sullivan Ave./CT. Rte. 194
S. Windsor, CT
AMK Welding is proposing a 13,600 S.F. addition onto their existing building on Patria
Road. As part of the proposed expansion, additional parking will be provided. The
development will disturb a small wetland area on the site. It is anticipated that a
minimum of 205 sf of wetlands will be created associated with the construction of the
shallow vegetated swale.
A portion of the developed areas of the site presently drain to 3 on site catch
basins/drywells. The front two catch basin/drywell structures appear to be connected via
a pipe, and appear to be connected also to the existing storm drainage system within
Patria Road. A smaller portion provides surface runoffsoutherly to a wetland area on-
site.
The proposed development will result in an increase on the site of approximately 0.54
AC. of impervious coverage. Assuming the increase in drainage area, and using a 5-
minute time of concentration, the peak increase in runoff for a 10-year design storm
would be 1.1 CFS, northerly overland to the storm system within Sullivan Ave. A copy of
this report and site plans have been sent to the Connecticut Department of Transportation
for review. Assuming a 0.8 change in runoff coefficients from existing to developed for
the .35 AC of impervious area, and a 5-minute time of concentration,the peak increase in
runoff for a 10-year design storm on site would be 1.7 CFS.
This larger portion of storm runoff from the site which includes the roof leader(s)for the
building addition will be directed into a shallow vegetated swale and then discharge into
the existing ditch that currently runs southerly into the existing conservation easement.
The gentle slope of the swale will provide for extended contact with vegetation and
mitigate runoff from the site. The swale is immediately adjacent to a large wetland area,
and the runoff will gradually enter this larger wetland area. It is understood that surface
runoff from this site was included in the South Windsor Technologies Industrial
Subdivision Stormwater Management Plan and, therefore, detention is not warranted.
Standard erosion controls have been designed to be used during construction including
silt-fencing down-slope of disturbed areas, and around topsoil stockpiles. Due to the
relatively small-disturbed area, and the gradual grades on the site, erosion is not expected
to be a problem.
SCALE 1:24000
1 0 1 MILE
%L 6s 1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
�0 - UNITED STATES 1 .5 0 1 KILOMETER
<o DEPARTMENT OF THE INTERIOR
o CONTOUR INTERVAL 10 FEET
+01 GEOLOGICAL SURVEY NATIONAL GEODETIC VERTICAL DATUM OF 1929
72°37'30" THOMPSOWILLE 8 Mi.
• 41°52'30"+ 6%000m-E. 3.2 M1. TO INTER TATE 9/ 70D 35' 701
ko
ry Ul (~fit " -!� `♦ 1 •I %1.+,� (� Q 4
na/ -J � � � I, o• �Il
/637 -.: _:: I�a ,S � _ r-=. "/�\ • ;�,.--- `��
r/ M7j. o
r`o ti •o B �NRAIL o
94 �� r o O
East Windso
84
4636
SITS
\ ro.
ri o I 'Ed Cp • • f
✓ o n O � � •�O.
/ 1= ricicx ar
0
4635
�f • � a —
• ° (Nartf to Cen x gat /`o. - - 80STR
-10
c
4634 o .. ROAD CLASSIFICATION
50' o •Po 1 Heavy-duty. Light-duty...................
.— —
�- 30 1 0 Medium-duty............ Unimproved dirt==_=____
to Cem• 0 Interstate Route 0 U.S. Route O State Rout
CONNECTICUT
r j .�; - QUADRANGLE LOCATION MANCHESTER, CONN
0 8 r f• ono Revisions shown in purple and woodland compile bn cooperation 41072-G5-TF-024
33 o with State of Connecticut agencies from aerial ph aographs taken 1982 and other sources. This information not field checked PHOTORE 1963
63 t 984
®o . •!.emu Map edited 1984
orb r" Epp Purple tint indicates extension of urban areas DMA 6467 1 SE-SERIES V816
to
1650EX
RUNOFF CURVE NUMBER COMPUTATION Version 2.00
Project : AMK WELDING User: 2MI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: EXISTING RUNOFF CONDITIONS
-------------------------------------------------------------------------------
Hydrologic soil Group
COVER DESCRIPTION A B C D
Acres (CN)
-------------------------------------------------------------------------------
OTHER AGRICULTURAL LANDS
Woods fair - .73(60) - -
Total Area (by Hydrologic Soil Group) .73
-------------------------------------------------------------------------------
TOTAL DRAINAGE AREA: .73 Acres WEIGHTED CURVE NUMBER: 60*
-------------------------------------------------------------------------------
* - Generated for use by GRAPHIC method
0 TIME OF CONCENTRATION AND TRAVEL TIME Version 2.00
Project : AMK WELDING User: 2MI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: EXISTING RUNOFF CONDITIONS
-------------------------------------------------------------------------------
Flow Type 2 year Length slope surface n Area wp Velocit Time
rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec (hr)
-------------------------------------------------------------------------------
sheet 3.2 45 .008 H 0.273
sheet 95 .01 H 0.453
Time of Concentration = 0.73*
--- Sheet Flow Surface Codes ---
A Smooth surface F Grass, Dense --- shallow concentrated ---
B Fallow (No Res.) G Grass, Burmuda --- surface codes ---
C Cultivated < 20 % Res. H woods, Light P Paved -
D Cultivated > 20 % Res. I woods, Dense U unpaved
E Grass-Range, short J Range, Natural
* - Generated for use by GRAPHIC method
0 GRAPHICAL PEAK DISCHARGE METHOD Version 2.00
Project : AMK WELDING User: 2MI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: EXISTING RUNOFF CONDITIONS
Data: Drainage Area .73 * Acres
Runoff Curve Number . 60 *
Time of Concentration: 0.73 * Hours
Rainfall Type III
Page 1
1650Ex
Pond and swamp Area .07 Acres 9.6 % of Drainage Area
---------------------------------- ---------
storm Number I 1 1 2 1 3 1 4 I 5
1----------------------I------I------1------1------1------1
Frequency (yrs) i 2 I 10 i 25 i 50 i 100
i 24-Hr Rainfall (in) 1 3.2 = 4.7 1 5.5 1 6.2 1 6.9 I
Ia/P Ratio 1 0.42 0.28 0.24 j 0.22 0.19
j Runoff (in) 0.41 j 1.13 = 1.60 j 2.05 j 2.53 j
junit Peak Discharge 10.348 10.462 10.480 10.492 10.502 1
(cfs/acre/in) I I I I I I
Pond and swamp Factor) 0.72 1 0.72 1 0.72 1 0.72 1 0.72 1
I 5.0% Ponds used I I I I I I
Peak Discharge (cfs) I 0 1 0 1 0 1 1 1 1 1
* - Value(s) provided from TR-55 system routines
0
Page 2
1650DVN
RUNOFF CURVE NUMBER COMPUTATION Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: DEVELOPED RUNOFF CONDITIONS (NORTH TO SULLIVAN AVE.)
-------------------------------------------------------------------------------
Hydrologic soil Group
COVER DESCRIPTION A B C D
Acres (CN)
-------------------------------------------------------------------------------
FULLY DEVELOPED URBAN AREAS (Veg Estab.)
Open space (Lawns,parks etc.)
Good condition; grass cover > 75% - .03(61) - -
Impervious Areas
Paved parking lots, roofs, driveways - .19(98) - -
Total Area (by Hydrologic Soil Group) .22
-------------------------------------------------------------------------------
TOTAL DRAINAGE AREA: .22 Acres WEIGHTED CURVE NUMBER: 93*
-------------------------------------------------------------------------------
* - Generated for use by GRAPHIC method
TIME OF CONCENTRATION AND TRAVEL TIME Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: DEVELOPED RUNOFF CONDITIONS (NORTH TO SULLIVAN AVE.)
-------------------------------------------------------------------------------
Flow Type 2 year Length slope Surface n Area Wp Velocit Time
rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec (hr)
-------------------------------------------------------------------------------
sheet 3.2 s0 .011 A 0.015
sheet 12 .016 F 0.048
shallow Concent'd 75 .003 p 0.019
Time of concentration = 0.08*
--- sheet Flow surface Codes ---
A smooth surface F Grass, Dense --- shallow concentrated ---
B Fallow (No Res.) G Grass, Burmuda --- surface Codes ---
C Cultivated < 20 % Res. H Woods, Light P Paved
D Cultivated > 20 % Res. I Woods, Dense U unpaved
E Grass-Range, short J Range, Natural .
* - Generated for use by GRAPHIC. method
0 GRAPHICAL PEAK DISCHARGE METHOD Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: DEVELOPED RUNOFF CONDITIONS (NORTH TO SULLIVAN AVE.)
Page 1
1650DVN
Data: Drainage Area .22 * Acres
Runoff curve Number 93 *
Time of concentration: 0.08 Hours
Rainfall Type III
Pond and swamp Area . NONE
-----------------------------------------------------------
-----------------------------------------------------------
storm Number i 1 1 2 1 3 I 4 1 5 1
----------------------I------I------I------I------I------I
Frequency (yrs) 2 ) 10 ) 25 ) 50 ) 100
24-Hr Rainfall (in) I 3.2 I 4.7 I 5.5 I 6.2 I 6.9
Ia/P Ratio ) 0.05 0.03 ) 0.03 0.02 ) 0.02
j used j 0.10 j 0.10 j 0.10 0.10 10.10 j
j Runoff (in) ) 2.45 ) 3.90 ( 4.69 j 5.38 16.07 )
unit Peak Discharge 11.072 11.072 11.072 11.072 11.072 )
I (cfs/acre/in)
Pond and swamp Factor) 1.00 1.00 1.00 1.00 11.00 I
I 0.0% Ponds used I I I I I I
i----------------------i------i------I------I------I------I
Peak Discharge .(cfs) I 1 ( 1 ( 1 1 1 1 1 (_
-----------------------------------------------------------
* - Value(s) provided from TR-55 system routines
Page 2
1650DVS
RUNOFF CURVE NUMBER COMPUTATION Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: DEVELOPED RUNOFF CONDITIONS (SOUTH TO WETLANDS ON SITE)
-------------------------------------------------------------------------------
Hydrologic Soil Group
COVER DESCRIPTION A B C D
Acres .(.CN)
-------------------------------------------------------------------------------
FULLY DEVELOPED URBAN AREAS (Veg Estab.)
open space (Lawns,parks etc.)
Good condition; grass cover > 75% - .16(61) - -
Impervious Areas
Paved parking lots, roofs, driveways - .35(98) - -
Total Area (by Hydrologic Soil Group) .51
-------------------------------------------------------------------------------
TOTAL DRAINAGE AREA: .51 Acres WEIGHTED CURVE NUMBER: 86*
-------------------------------------------------------------------------------
* - Generated for use by GRAPHIC method
0 TIME OF CONCENTRATION AND TRAVEL TIME Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
subtitle: DEVELOPED RUNOFF CONDITIONS (SOUTH TO WETLANDS ON SITE)
-------------------------------------------------------------------------------
Flow Type Zrayear Length code Velocit Time
(ft/ft) sue n (sq/ft) (ft) (ft/sec (hr)
-------------------------------------------------------------------------------
sheet 3.2 70 .01 A 0.020
Sheet 25 .026 F 0.071
open channel 125 1.71 0.020
Time of Concentration = 0.11*
--- sheet Flow Surface Codes ---
A smooth surface F Grass, Dense --- Shallow Concentrated ---
B Fallow (No Res_) G Grass, Burmuda --- surface Codes ---
C Cultivated < 20 % Res. H woods, Light P Paved
D Cultivated > 20 % Res. I Woods, Dense U unpaved
E Grass-Range, short ] Range, Natural ,
* - Generated for use by GRAPHIC method
0 GRAPHICAL PEAK DISCHARGE METHOD Version 2.00
Project : AMK WELDING User: KMI Date: 02-10-06
County : HARTFORD State: CT Checked: Date:
Subtitle: DEVELOPED RUNOFF CONDITIONS (SOUTH TO WETLANDS ON SITE)
Page 1
1650DV5
Data: Drainage Area 51 * Acres
Runoff curve Number 86 *
Time of concentration: 0.11 * Hours
Rainfall Type III
Pond and swamp Area . NONE
-----------------------------------------------------------
-----------------------------------------------------------
storm Number I 1 ( 2 1 3 1 4 1 5 1
----------------------i------I------I------I------I------I
Frequency (yrs) 1 2 1 10 ; 25 1 50 .1 10-0 .1
24-Hr Rainfall (in) I 3.2 I 4.7 I 5.5 I 6.2 I 6.9
1 Ia/P Ratio 0.10 j 0.07 ) 0.06 1 0.05 0.05 j
Used 0.10 0.10 0.10 0.10 10.10
1 Runoff (in) 1 1.84 ) 3.19 13.94 i 4.60 1 5.27
unit Peak Discharge 11.015 11.016 11.016 11.016 11.016 1
i (cfs/acre/in) I I I I I I
Pond and swamp Factor) 1.00 ) 1.00 ) 1.00 ) 1.00 ) 1.00
I 0.0% Ponds used I I I I I I
----------------------I------I------I------I------I------I
Peak Discharge (cfs) I 1 1 2 1 2 J 2 1 3 I_
-----------------------------------------------------------
-----------------------------------------------------------
* - Value(s) provided from TR-55 system routines
0
Page 2
1650EX
Pond and swamp Area .07 Acres 10.0 % of Drainage Area
I Storm Number I l j 2 i 3 i 4 i 5 i
I----------------------j------I------I------j------I------I
I Frequency (yrs) I 2 I 10 j 25 I 50 i 100 I
24-Hr Rainfall (in) ( 3.2 j 4.7 t 5.5 ( 6.2 ( 6.9 j
Ia/P Ratio i 0.23 i 0.16 i 0.13 j 0.12 0.11 j
Runoff (in) i 0.98 j 2.05 i 2.68 i 3.26 i 3.85
I unit Peak Discharge 10.485 10.518 10.528 10.534 10.540 I
(cfs/acre/in)
I Pond and swamp Factor) 0.72 j 0.72 10.72 10.72 10.72 I
I 5.0% Ponds used I I I I I i
----------------------I------I------I------I------I------I
I Peak Discharge (cfs) j 0 I 1 j 1 1 I 1
-------------------
* - values) provided from TR-55 system routines
Page 2
X82'.O8-
(�!
2.4�- 2.._
�3 82.66 � 82,66 2E
//EXIST. CB
//EbST. CB
2,6 \ INV.(24 E)=78 79 $ i/ / 8 \ 7=81.62
/ $ / 2.6 INV.(24'Q=78.79
2. 360 2.
83 - 6 6 1 � �
82.47 82,47
X82. � � �F - X82,
As `. ' ` cAS FD
i SERVICE N `. -�' X82. i SERVICE �j `. ENO/jj ` X82.
,EXISTING CONDITIONS _ ' tl p / 22 qC S`HORTy
0.7�'AC
1 ��s+� /8j_ ` / 3/4" IRON /AVELbeED CONDITIONS-SOUTH j / -3/4" IR
WOODED: ITN=0.10 (Rational)
TN=60 (TR-55/B-soils) 810.51 AC Ii ]5 At
11/I%/WETLANDS , •` - '' , 82.3 ' / 1 1 / , ` 2.3
p.3,5 �t IMPERVIOUS (CN=.90 Rat' t 345
82.7 ® 1 %, I IfCN=98 -55) , / 1 ` 82J
0.16 AC +AWN (CN=.30 Ratio al/ // 1 83.3 1
CN=61 TR 5)
X81. X81.74 1 , '� ��1 / /` X81. X81.74 / 1 8 8 c'I
t
X81.65 / / / Lo x X8L65 r /
_X81A8 i //t _ _X81AP ^' .0
` 0,87 k i � ti 11 / `� - t
1 16 �11 / , <�=0� 182- / �// 1 `, 80, 0 .25
/ .`
>. 58 $/ i X81.9 Z&1 58
` 81.82 /' \ X-81.23 `-.81.82 11 r \ 81, 3
1/ "//)(82.02 \ , // // 1X82,0GRASS
SEE DETAIL) �►
81.65 X81.74 , ///, 81,65 X81,74
1.UN m OTHERNISE Rolm,DnIING UTILITY REVISIONS Fax 860.291•8757 �� For.
LOCATIONS AS SHONN ARE BASED ON GRAPHIC SCALErAdw SHEET
SHOAVAULD FIELD
All PRIOR
TO CONLITIESSTRUCTION.
40 0 20 �ofesslonals Inc. �� DRAINAGE AREAS 1
SHOULD tLE FOR AMOK.D PRIOR TO CONSTRUCTION.
40
2.ALL U71UMES ARE TO BE STAKED IN THE FIELD
BY A LICENSED LAND SURVEYOR PRIOR TO �A�
CONST UC710His INVALID tlta.Ess It BEARS THE civil engineers • planners • surveyors M3 SVLLIVL71j® AVL mm M- AV "�AM 1M OF
OF IMSSIOTHE OFEAL AMENOeEE/SURAVEY�OR. No. DATE DESCRIPTION BY 1 inch = 40 ft• landscape architects • sis •Sps SOUTN WiNDSOR
165 South Sotegite Rood South Vwndsor Connecticut 06074 Cannoafti or as A1�21101W
OWN Sfq
G 1
1540 SULLIVAN AVENUE • SOUTH WINDSOR, CT 06074
sox•CO TELEPHONE (860) 644-2511
To: Design Professionals
165 So. Satellite Road
South Windsor, CT 06074
From: Jeffrey H. Folger—Environmental Planner/Conservation Officer
Date: March 7, 2006
Re: App.,#0&081' -Review of the proposed AMK Welding site plan. Plans dated 1/31/06.
I have reviewed the proposed plan with the following initial comments:
The South Windsor Fire Marshall has stated that an emergency vehicle access will be required
around the south side of the building. How will a grass swale be constructed here given this
requirement?
As I stated verbally to Karen Isherwood two weeks ago, stormwater runoff quality concerns have
not been addressed. What is the estimated residence time with in the proposed grass swale?
A mitigation plan should be submitted that compensates for the proposed wetland disturbances.
The drainage plan proposes 205 sgft of wetland creation. How does this amount comply with the
"no net loss of wetlands"policy set forth by the IWA/CC?
A soil report has not been received showing soil types present on the site. This should include
both upland and hydric soil types.
A report on the wetland functions and values should be submitted evaluating the project's
potential impacts to wetland function and water quality.
CC. Town Engineer
Director of Planning
MEMORANDUM
To: South Windsor Inland Wetland/Conservation Commission.
From: Jeffrey H. Folger—Environmental Planner/Conservation Officer
Date: March 8, 2006
Re: Appl. 06-08P—AMK Welding. Plans dated 1/31/06
The project is to construct a 13,600 sqft addition to an existing building. The site consists
of 4 acres. Direct wetland disturbances are estimated to be 4,330 sqft or.098 acres.
Disturbance within the URA is estimated at 23,500 sqft. Proposed wetland creation is
estimated to be 4,400 sqft or 0.1 acres.
Site: The site is located in the Bancroft Brook watershed. The total area is 4.07 acres..
The proposed addition,parking and wetland creation is proposed on the undeveloped lot
east of the existing building. Flagged wetlands boundaries shown appear to be accurate.
Numbered wetland flags are present in the field.
The cover types present on the site would be classified as a deciduous hardwood forest.
Dominant tree species are black oak,black gum, and red maple. The over story is well
developed and suppresses somewhat the density of the shrub understory of high bush
blueberry and summer sweet.
Regulated areas on the site consist of a forested wetland and the adjacent URA. This
wetland is a part of the larger wetland system that extends to the south into the recently
approved South Windsor Technical Center Industrial subdivision. This lot is a part of
that subdivision.
Wetland Functions:
Major functions of this wetland would be stormwater flow attenuation, and detention(due
to lack of any appreciable slope), sediment and nutrient retention, wildlife habitat, and
groundwater recharge. The high degree of development on three sides of this wetland
limits wildlife habitat value in this portion of the wetland system.
Impacts:
Sedimentation:
Due to the flat topography on the site and sandy composition of the soil, standard E&S
controls as shown on the plans should be adequate to contain migrating sediments
generated by construction activities associated with the addition.
Stormwater Management:
Stormwater quality is proposed to be addressed with the use of a sheet flow from the
northern parking lot to a catchbasin with a sediment sump and trap hood that will
discharge into the Sullivan Avenue stormwater system. The hardtop along the eastern
portion of the building will sheet flow to a small grassed swale and ultimately flow to the
wetland to the south. The roof runoff will discharge directly into the wetland. The
majority of the existing site drains to a created wetland that was part of a previous
application. The measures proposed are adequate. The limited increase in impervious
surface is not anticipated to generate a significant pollutant load.
Mitigation:
A mitigation area in the form of wetlands creation is proposed in the Technologies Center
property to the south. 4,400 sqft are proposed to be excavated to form a shallow
marsh/wet meadow. Plantings are proposed to add diversity to the potential habitat value.
Additionally, the basin bottom is proposed to be planted with a wet marsh seed mix. The
issue is that the area designated as a"wetland bank"as a part of the original site approval
of the Technologies Canter has not been constructed yet. It would seem prudent to insure
that the mitigation that is proposed with this application will actually occur. At this point
this applicant would have to rely on the developer of the Technology Center to create the
wetland in question. One thing that I am seeking is a written document that would grant
the applicant permission to construct the wetland area needed in the designated location.
MEMORANDUM
To: Marcia Banach, Director of Planning
Jeff Folger, Environmental Planner
From: Jeffrey B. Doolittle, P.E., Town Engineer C �
Date: 3/8/06
RE: App 06-08P AMK Welding Site Plan
have reviewed the proposed site plan for AMK Welding at 283 Sullivan Avenue, and I
have the following comments:
1. Label the two monitoring wells by the addition to be removed if they are no longer
needed.
2. Show a 10 foot wide sidewalk and grading easement along the Patria Road
frontage of this property for the installation of the sidewalk that is part of the
approved South Windsor Technologies Subdivision.
3. Add a catch basin at the low point in the expanded parking lot to the north of the
building addition and pipe it to the existing catch basin along Sullivan Avenue.
Include a trap hood on the outlet from this catch basin.
4. Show the roof leaders discharging to the south on the plan.
5. What is the impact of the increased peak discharge to both the storm drainage
system in Sullivan Ave and its outlet, and the property to the south? Mitigation
needs to be included for any impacts the storm water runoff from this site may
have on other properties.
6. Include a storm water maintenance plan with this site plan. Also clearly show the
vegetated swale on the plan.
7. Extend the paved area south on the east side of the addition to provide a 20 foot
wide paved access drive for fire vehicles.
8. The sanitary monitoring manhole in front of the addition needs to include an
access easement to the Town of South Windsor.
9. This project must be submitted to the WPCA for review and approval.
Please call me if you have any questions.
Connecticut Ecosystems LLC
• Wetland Delineation • Wetland & Aquatic Evaluation • Natural Resource Inventories
• Mitigation • Project Planning • Permit Assistance • Expert Testimony
WETLANDS REPORT
I Submitted to the
SOUTH WINDWOR INLAND WETLANDS AGENCY/CONSERVATION COMMISSION
SOUTH WINDSOR TECHNOLOGIES CENTER
SULLIVAN AVENUE RECEIVE®
SOUTH WINDSOR, CONNECTICUT
MAR 0 9 2006
December 17 2001 youth Windsor
� ItJLAND WETLANDS AGENCY
CONSERVATION COPvIMISSION
CE Project#01-390 File caprojects 2001101-3901reportdoc
i
38 Westland Avenue • West Hartford, CT 06107 • Phone 8 Fax (860) 561.8598 • email ecosys@connico.net
!t
x \ & 3
V' � f., ` l i �+3t it f.� f I't- '� E4St',- '� • �YD.
g t ! fl .['Ilj l,} .f�}'Yaf`i. • _
9�'
r !J� � - et_aus •it y:f1i:7 5 ` Ty+�,� 4X '. Jj
r
s
t I I I ! 0 i e
r �
fv
44
,t
It
A
r
# - {
P
tx
.€i`�t Y..rT1'+rt .;� v! lf�.l _• ` d... yy1` t'� - - 1.4 ,y .
nth Windsor Technologies Center Wetlands Report t
,�h Woulsor, CT Page 1
12/16/01
1.0 EXECUTIVE SUMMARY
• The construction of South Windsor Technologies Center is proposed on a 80.13-
acre parcel of land in South Windsor, CT.
•A total of 27.3 acres of wetlands occurs on the property. The functional value of
the two on-site wetlands was assessed using the"Highway Methodology".
• The two on-site wetlands provide several principal functions, including
floodflow alteration, finfish and wildlife habitat, nutrient and sediment removal,
and shoreline stabilization.
•During the course of 6 site inspections in 2001 a total of 44 wildlife species were
observed on the subject property. Investigations found no rare plants or
invertebrates known to occur in"sand plain communities".
•A total of 0.53 acres of wetland impacts are proposed. These impacts are
associated with road construction, and are necessary to provide access to the site.
•A total of 1.53 acres of Upland Review Area(URA)will be disturbed by the
development for road construction. The URA disturbance associated with
individual lot development cannot be quantified, since the future use for each lot is
i not known at this time. The South Windsor Inland Wetlands Commission will
have an opportunity to review development plans for the individual lots as they
' become available in the future.
•A 1.23-acre wetland mitigation area will be created to compensate for the
unavoidable wetland impact.
•An integrated storm water management system(catch basins, two BaySaver
Treatment Systems, two detention basins) is proposed to detain and renovate storm
water runoff. It is anticipated that the system will remove at least 80 percent of
TSS in storm water runoff, exceeding DEP guidelines.
2.0 INTRODUCTION
This report has been prepared by Connecticut Ecosystems LLC on behalf of the
applicant, for submission to the appropriate Town of South Windsor land use
commissions. The purpose of the report is to describe the existing conditions on
the property, assess the functional value of its.regulated areas, review the impact
' Connecticud Ecosystems LLC
. �h Windsor Technologies Center Wetlands Report Page 2
Sosdth Windsor, CT S
12/16/01
of proposed regulated activities, and describe measures designed to mitigate these
impacts and manage storm water runoff.
Edward M. Pawlak, Registered Soil Scientist and Professional Wetland Scientist
inspected the property on April 20, May 9, July 6,August 31, September 20,
October 18, and December 5, 2001 to collect data for this report. Ms. Sigrund
Gadwa of Carya Ecological Services, LLC searched the site on September 3, 6 and
10, 2001 for rare plants. Dr. David Wagner inspected the site on September 20,
2001 for rare invertebrates.
The following materials were reviewed prior to of this report:
preparation Po
• Site Plans prepared by Design Professional Engineers, Inc., (Sheets 1-34)
dated November 2001
•DEP Natural Diversity Data Base Maps
•USGS topographic map (Manchester, CT quadrangle)
• 1995 aerial photographs
3.0 SITE DESCRIPTION
•
The 80-acre property is located south of Sullivan Avenue and east of Route 5 in
South Windsor, CT(Figure 1). It is bordered to the west by railroad tracks, to the
north by Sullivan Avenue, to the east by undeveloped land owned by Gerber
Scientific and Spring Wood Limited Partnership, and to the south by land owned
by KF Brick Company, Inc. (Figure 2). Very gentle to nearly level slopes
characterize the entire site. The property supports mixed hardwoods forest and
post-agricultural fields.
A large centrally located field(`Field I")was farmed in the past, and is
characterized by an herbaceous meadow and locally dense shrub/sapling thickets. -
4.0 SOILS
The Hartford County Soil Survey indicates that the soils on the site developed
from glacial outwash parent materials consisting of stratified sand and gravel.
Non-wetland soils were mapped as the moderately well drained Sudbury series.
Deep test pits revealed that these sandy soils are underlain by clay soils at a depth
of 50 to 108 inches. These subsurface clay soils are derived from glacial lakebed
Connecticut Ecosystems LLC
s i �V! c 21
'"4.
AY
AM
Av �� • I / S�
W1 . ,
4
Fie
Field 1
U2
W2 4 Field 4
_Field Z-
`ri'Brickyftd
+'Pond
Wuulsor Technologies Center Wetlands Report Page 3
h Windsor, CT 12116101
sediments. Well �to
rained to somewhat excessively drained Merrimac soils were
mapped adjacent Bancroft Brook.
On-site wetland soils were mapped as the poorly drained Walpole series.
5.0 UPLAND VEGETATIVE COMMUNITIES
Two upland(non-wetland)vegetative communities occur on the property, as
described below. These are identified in Figure 2 as U 1 and U2.
5.1 Post-Agricultural Fields (Ul)
A densely vegetated, nearly level early successional field occurs on the central
portion of the property("Field I"). The aerial photograph in the Hartford County
Soil Survey, which was published in 1962, shows this field cleared, and appears to
have been in agricultural production at that time. Goldenrod is the dominant flora
1 in the field, accompanied by sensitive fern, and locally dense stands of eastern
cottonwood and willow.
A smaller successional field is located at the southwest comer of the property
("Field 2"). This field contains locally dense sapling and shrub thickets consisting
of red maple, gray birch, white pine, multiflora rose, silky dogwood and Russian
olive. The center of this field is open, and contains goldenrods, little bluestem,
bracken fern and mullein. The dense shrub and sapling growth indicates that Field
2 has been out of agricultural production longer than Field 1.
' 5.2 Mixed Hardwood Forest (U2)
Mature mixed hardwoods forest abuts the southerly boundary of Field 1. Oaks
(red, white), hickory, black cherry,black birch, shadbush and white pine occur
within this very gently sloping forest. Blueberry and tree clubmoss grow in the
very sparse forest understory.
6.0 DESCRIPTION AND FUNCTIONAL VALUE OF WETLANDS :
A total of 27.3 acres of wetlands (34 percent of site), in two distinct areas, occurs
on the property. The physical characteristics and dominant flora of each wetland
are presented below.
Connecticut Ecosystems LLC
(Windsor Technologies Center Wetlands Report Page 4
sah Windsor, CT 12/16/01
The functional value of several of the on-site wetlands was assessed using the
"Highway Methodology". This methodology, developed by the U.S. Army Corps
of Engineers, is a qualitative, descriptive approach to wetland assessment
(USACOE 1995). It identifies 13 wetland functions, and provides criteria that
may be considered in their evaluation(Appendix 4). The user evaluates each
wetland to determine which of the 13 functions are provided by the wetland, and
which are considered"principal' functions.
6.1 Wetland 1
6.1.1 Description
Wetland 1 is a large,very gently sloping system that extends across the northerly
and westerly portions of the property (Figure 2). At its north end the wetland
consists of a deciduous wooded swamp with red maple dominant in the overstory
and a very dense stand of sweet pepperbush in the understory (Appendix 2). The
microtopography is well developed,with shallow depressions and nearby
hummocks abundant. Shallow ditches have been dug in the swamp in the past,
possibly in an attempt to drain it.
Wetland 1 extends south of the tree line into Field 1 in two areas. The first is a
small area along the north tree line,-where eastern cottonwood saplings are
abundant. The second is a larger area at the westerly end of the open field. Red
maple, speckled alder and sensitive fern are abundant in this area. Both of these
areas contained extensive shallow inundation in the spring of 2001.
6.1.2 Vernal Pools
Three seasonally_flooded depressions were identified within the northerly portion
of Wetland 1 (Figure 2). These depressional areas contained 8-16 inches of dark,
tea-colored water on April 20, 2001. Wood frog egg masses, approximately 4
inches diameter, were observed in all three pools(1 mass in#1, 2 masses each in
#2 and 93). Pool#1 was dry on May 9, while#2 and#3 contained 8 and 11 inches
of water, respectively. All three areas were dry on July 6, 2001. It should be
noted that the spring of 2001 was very dry, with precipitation levels well below
average.
A Department of Environmental Protection task force proposed the following draft
vernal pool definition:
Connecticut Ecosystems LLC
f,.
6
�tah
indsor Technologies Center Wetlands Report Page 1
fndsor,CT 12/16/0
"Vernal pool means a seasonal or permanent watercourse in a defined
depression or basin, that lacks a fish population and supports or is capable
of supporting breeding and development of amphibian or invertebrate
species recognized as obligate to such watercourses (i.e., spotted
salamander, Jefferson salamander complex, marbled salamander, wood
frog,fairy shrimp).
Based upon this definition, and the spring 2001 observations, areas #2 and 3 are
classified as vernal pools. The biological productivity of these vernal pools is low,
as evidenced by the small number of wood frog egg masses. They are also
susceptible to premature drying in a spring characterized by below average
precipitation.
6.1.3 Functional Value
Wetland 1 provides five principal functions(Table 1 and Appendix 4). The sandy
stratified drift soils in the wetland provide an opportunity for seasonal ground
' water recharge.
Due to its large size, dense vegetation, and very gentle gradient, Wetland 1
' provides a very important floodflow alteration function, protecting downstream
structures and residents. These same attributes also contribute to important
' sediment/toxicant retention and nutrient removal functions.
Wetland 1 provides valuable wildlife habitat due to its large size, diversity of
' wetland classes (wooded swamp, sapling swamp, wet meadow), presence of vernal
pools, well-developed tree and shrub strata, and juxtaposition with a successional
field.
6.2 Wetland 2
6.1.1 Description
Wetland 2 is located along the southeasterly property boundary (Figure 2). This
' riparian wetland is associated with Bancroft Brook, a perennial fast order
watercourse whose headwaters lie to the east of the site(Figure 1). Bancroft
Brook flows off-site to the west, where it joins Stoughton Brook and flows into the
Connecticut River(Figure 1).
On the property Bancroft Brook is a sluggish, low gradient meandering
watercourse with a sandy bottom substrate. The average channel width is 6 feet.
Root wads, undercut banks and fallen logs provide instream cover. Shallow riffles
Connecticut Ecosystems LLC
Table 1. Wetland Functional Value Summary
Wetland
Function/Process 1 2
Groundwater RechargelDischarge ✓ ✓
Flood ow Alteration ✓ ✓
Fish &Shellfish Habitat ✓
Sediment/Toxicant Retention ✓ ✓
Nutrient Removal ✓ ✓
Production ort ✓
SedimenMShoreline Stabilization ✓
WdO e Habitat ✓ ✓
' Recreation
Educational Scienti is Value
Un' ueness/Herita e
Visual uality/Aesthetics ✓
Endangered Species Habitat
Note: ✓ indicates a Principal Function associated with a wetland.
t
' Connecticut Ecosystems LLC
jy,,,dsor Technologies Center Wetlands Report Page 12
ti 0P 10r,CT 12/16/01
11.5 Anticipated Pollutant Removal Efficiency
11.5.1 Guidelines
Doenges et al. (1990)note that"sedimentation is one of the most important
mechanisms for the removal of suspended solids from urban runoff`." Suspended
sediments are known to transport a variety of adsorbed(attached)pollutants,
including coliform bacteria, metals and organics(Doenges et al. 1990). The DEP
"General Permit for the Discharge of Stormwater and Dewatering Wastewaters
from Construction Activities" establishes a goal of removing at least 80 percent of
TSS from storm water discharges. The 80 percent goal is also included in the DEP
publication, "Coastal Water Quality Protection, a Guide for Local Officials."
11.5.2 Performance
Considering TSS removal efficiencies reported in the literature (80%for
BaySaver, 60-70% for extended detention basins/wetlands, 10%for catch basins),
it is anticipated that the proposed storm.water management system will remove at
least 80 percent of TSS in storm water runoff. This will exceed the guidelines
established by DEP.
12.0 EROSION AND SEDIMENTATION CONTROL
An Erosion and Sedimentation control plan has been developed for the
(�) P Pe
project.
During construction it is recommended that the two detention basins serve as
sediment basins. It is recommended that the basins be fitted with an appropriate
temporary outlet structure(perforated riser pipe surrounded by a stone jacket)
during construction, then cleaned out and seeded with a wetland seed mix for use
as a detention/water quality basin.
13.0 MITIGATION
A 1.3 acre mitigation wetland will be created as compensation for the proposed
0.53 acre wetland disturbance (a creation:disturbance ratio of 2.45). The-
mitigation area('%W) is located at the westerly end of Field 1, adjacent to
Connecticut Ecosystems LLC
yidsor Technologies Center Wetlands Report Page 13
h Wo-x&or,CT 12116101
sapling swamp and wooded swamp components of Wetland 1. The adjacent
sapling swamp contains locally dense stands of red maple saplings along with
alder, willows, steeplebush,purple loosestrife and sensitive fern. The proposed
MA is at a slightly higher elevation than the adjacent wetland(approximately one
foot), and thus contains non-wetland soils. This field is dominated by goldenrods,
accompanied by shrubs(e.g., multiflora rose, steeplebush, eastern cottonwood,
gray birch, Russian olive) and herbs(e.g., sensitive fern, woolgrass, soft rush,
purple loosestrife).
The mitigation wetland will be created by lowering the base elevation of the non-
wetland field to 77.0 feet, with scattered low hummocks at elevation 77.5 feet.
This should ensure the creation of a wetland hydrology, since the adjacent wetland
lies at an elevation of 77.5-78.4 feet. Topsoil will be scraped and stockpiled, and
will be spread during the final grading to provide 12 inches of topsoil across the
MA. Compaction by heavy machinery will be avoided during final grading. A
total of 6,230 herbs and 100 shrubs will be planted in the MA, with supervision by
a Professional Wetland Scientist(Table 2). Plants will be watered as needed. A
monitoring inspection will be conducted following planting, and at the end of each
of the three subsequent growing seasons, by a Professional Wetland Scientist.
Survival of plants will be monitored in sample plots, and color photographs will be
taken at fixed locations. Ground water depth will be monitored at a stand pipe that
will be installed in the center of the MA.
14.0 CONSERVATION EASEMENTS
A Conservation Easement will be created along the northerly end of Wetland 2,
the width ranging from 45-140 feet.
Connecticut Ecosystems LLC
FIE
- 111 a:-z
; .
Table 2. Mitigation Plants
T Scientific Name Common Name
5Shrub Cornus racemosa Gray dogwood
Corms sericea Red osier dogwood
Salix discolor Pussy willow
Sambucus canadensis Elderberry
S iraea lati olia Meadowsweet
Herbs Aster novae-an line New England aster
Asterpuniceus Swamp aster
Carex comosa Bearded sedge
Carex stricta Tussock sedge
Carex 1upylina Hop sedge
Carex lurida Lurid sedge
Carex vul inoidea Fox sedge
Eleocharis palustns Spike rush
Eupatorium maculatum Joe- a-weed
Eupatorium Perfoliatum Boneset
Gl ceria canadensis Fowl manna grass
Iris versicolor Blue flag iris
Juncus canadensis Canada rush
Leersia orywides Rice cutgrass
Poa palustris Fowl bluegrass
Scirpus cyperinus Wool grass
Scirpus pungens Three-square rush
Verbena hastata -Blue vervain
Vernonia noveboracensis New York ironweed
Notes: 1.Plants are available from New England Wetland Plants(413-256-1752)
2.In order to cover the 1.3 acre MA with herbs planted at Moot on-center spacing,a total of
6,230 plants will be required(328 of each of the above species). A total of 100 shrubs(20 of
each of the above species),will also be planted,scattered across the MA.
�D NN Sf4
o x Tiow� O-Pso� ?d
:J
wC, 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CT 06074
SOR CO TELEPHONE (860) 644 2511
April 12, 2006
Certified #70042510000398029578
Design Professionals, Inc.
Attn: Karen Isherwood
165 South Satellite Road
South Windsor, CT 06074
RE: Appl. #06-08P—AMK Welding
Dear Mrs. Isherwood:
At the April 5, 2006 regular meeting, the Inland Wetlands Agency/Conservation
Commission approved application #06-08P—AMK Welding—283 Sullivan Avenue—
Inland Wetland/Conservation Commission application for the construction of an addition
to an existing building and parking lot, stormwater structures, and associated
improvements on property located easterly of Patria Road and southerly of Sullivan
Avenue (Assessor's Map#121, parcel 43) I, Industrial Zone. This approval is subject to
the following conditions:
1. One blueprint copy of the entire set of plans and this letter reproduced thereon,
must be submitted to this Commission. This must be completed within 65 days
of approval prior to any construction activity on the site. Plans submitted to
Planning &Zoning Commission shall be considered having met this requirement.
2. The application shall indemnify and hold harmless the Town of South Windsor
against any liability, which might result from the proposed operation or use.
3. The permit is valid for five years and shall expire on April 5, 2011. It is the
landowner(s)/applicant(s) responsibility to track expiration dates and notify the
Commission of a renewal request at least 65 days prior to expiration.
4. All approvals required must be obtained and submitted prior to any activity on the
site.
5. A contact person shall be identified on the plans.
AMK Welding
April 12, 2006
Page 2
6. A bond in the amount of$3,000 to be submitted to the Planning &Zoning
Commission to ensure compliance with the erosion and sedimentation control
measures.
7. A bond in the amount of$5,000 to be submitted to the Planning &Zoning
Commission to ensure establishment and creation of the wetland area.
Very truly yours,
Eliza b h . Warren, Chairperson
IN D ETLANDS AGENCY/
C RVATION COMMISSION
EW:dr
cc: Chief Building Official