HomeMy WebLinkAboutReg Act in Wetlands (10) DEC 2 3 2004
TOWN OF SOUTH WINDSOR
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INLAND WETLANDS, WATERCOURSES AND CONSERVATION APPLICATION
Application# 0� _�'� Date Received
INSTRUCTIONS
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, Sections 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: Vanco Associates
Address: 417 John Fitch Boulevard South Windsor, Ct. 06074
Phone: (home) (work) 528-9800 (fax) 528-7966
B. Legal owner's name: Same As Above & Charles A. Jurgelas
Address 415 John Fitch Boulevard Sofifh Windsor, Ct. 06074
Phone (home) (work) (fax)
(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) Van's RV Center
1. Contact Person(if further information is needed)
Dna Steele J.R. Russo & Associates (work) 623-0569 (fax) 623-2485
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 # 22 Parcel# 26,27,29 Zone GC & A-40
7
F. Names of all abutting property owners from records in Town Clerk's office. (use separate sheet if
necessary) See Attahhdd 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
4 ** (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:
Construct bituminous paved storage area for RV inventory on existing gravel surfaced
area. Install storm drainage catch basin, particle seperator and riprap outlet control.
9,500± s.f. disturbance in 80' regulated area. 205± s.f. of wetlands disturbance.
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).See H above
K. Acreage of wetlands and watercourses in regulated areas to be altered: 0.005± 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: 1.1 Ac. project area (0.004±Z wetlands)
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.) P&Z
P. The applicant (or designated representative) hereby attests that a sign will be posted at the following
location(s) 417 John Fitch Blvd. & Chapel Road
By Name J.R. Russo & Associates
on or before the following date 1-7-05
8
i
Signature:
These signs must be displayed continuously for at least ten (10) days prior to scheduled meeting (see
Regulations, Section 7.3a)
The undersigned hereby applies for the regulated activities listed in paragraph H above, for a Inland Wetlands,
Watercourses and Conservation permit for the property described herein and confirms that:
1. She/he is familiar with the currently effective Inland Wetlands, Watercourses and Conservation Regulations
of the Town of South Windsor.
2. She/he understands that at any time during the review period, the Agency may require the applicant to
provide more information about the wetlands and/or watercourses in question and/or any proposed activity.
3. All information submitted in the application for review shall be considered factual, or in the case of
anticipated activity, binding. A knowing failure of the applicant or any of her/his agents to provide correct
information, or performance exceeding the levels of activity anticipated, shall be sufficient grounds for
revocation of any permit under these regulations.
4. By making this application, the applicant gives permission to the Inland Wetlands, Watercourses and
Conservation Commission members and/or its representative to enter the portions of the premises which are
subject of the application for the purpose of inspection and investigation and otherwise evaluating the merits
Of e applic ' n both before and after a final decision has been issued.
Signature of Owner o Property
Date 0 0�
X
Signature of Applicant
Date
9
December 3, 2004
459 John Fitch Boulevard LLC
55 Ridgefield Drive
South Windsor, CT 06074
CERTIFIED MAIL
Dear Property Owner:
Re: Zone Change Chapel Road/Rear of 417 John Fitch Blvd.
South Windsor, CT
In accordance with Section 7.3b of the "Town of South Windsor Inland Wetlands,
Watercourses, and Conservation Regulations", we are required to notify you that an
application has been filed'on the property abutting yours and is subject to a hearing by the
Inland Wetlands Agency/Conservation Commission and the Planning & Zoning
Commission. The application and plans are on file with the South Windsor Planning
Department.
As an abutting property owner you are invited to the hearing to ask questions and/or give
comments, however, you are not required to attend. You may also submit written
comments regarding the application prior to the hearing if so desire. For further
information regarding the specific date this will be heard please contact the South
Windsor Planning Department, 644-2511, ext. 253.
Sincerely
Mark Van Ostrand
Vanco Associates
Van's RV Center
417 John Fitch Boulevard
South Windsor, Ct. 06074
Inland Wetlands Application For Vanco Associates
Names and addresses of adjacent property owners
Patricia Mulholland& Sandra Brescia 459 John Fitch Boulevard LLC
54 Pine Crest Drive 55 Ridgefield Drive
East Hartford, Ct. 06108 South Windsor, Ct. 06074
Anne B. Starr Richard D. Nicolson
178 Chapel Road 105 South Mill Drive
South Windsor, Ct. 06074 South Glastonbury, Ct. 06073
Mac Keeber Associates LTD Partnership
C/o Reed National Corporation
260 North Elm Street
Westfield, Ma. 01085
CONNECTICUT DEPARTMENT OF
ENVIRONMENTAL PROTECTION GIS CODE#:
79 Elm Street For DEF use only - - -
Hartford,CT 06106-5127
Arthur J.Rocque,Jr.,Commissioner
Statewide Inland Wetlands & Watercourses Activity Reporting Form
Please complete this form in accordance with the instructions. Please print or type.
PART 1: To Be Completed By The Inland Wetlands Agency Only
1. DATE ACTION WAS TAKEN: Year Month
2. ACTION TAKEN:
3. WAS A PUBLIC HEARING HELD? Yes No
4. NAME OF AGENCY OFFICIAL VERIFYING AND COMPLETING THIS FORM:
(print) (signature)
PART 11: To Be Completed By The Inland Wetlands Agency Or The Applicant
5. TOWN IN WHICH THE ACTION IS OCCURRING: South Windsor
Does this project cross municipal boundaries? Yes No %
If Yes, list the other town(s)in which the action is occurring:
6. LOCATION: USGS Quad Map Name: Manchester AND Quad Number: 38
Subregional Drainage Basin Number: 4004
7. NAME OF APPLICANT,VIOLATOR OR PETITIONER: Vanco Associates
8. NAME&ADDRESS/LOCATION OF PROJECT SITE: 417 John Fitch Boulevard
Briefly describe the action/project/activity: Pave existing gravel surface inventory storage area.
9. ACTIVITY PURPOSE CODE: D
10. ACTIVITY TYPE CODE(S): 10 12 4
11. WETLAND/WATERCOURSE AREA ALTERED[must be provided in acres or linear feet as indicated]:
Wetlands: 0.005±acres Open Water Body: 0 acres Stream: 0 linear feet
12. UPLAND AREA ALTERED[must be provided in acres as indicated]: 0.02± acres
13. AREA OF WETLANDS AND/OR WATERCOURSES RESTORED, ENHANCED OR CREATED: 0 acres
[must be provided in acres as indicated]
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1540 SULLIVAN AVENUE • SOUTH WINDSOR, CT 06074
SOR.co TELEPHONE (860) 644-2511
To: J.R. Russo & Associates January 7, 2004
1 Shoham Road
East Windsor, CT 06088
From: Jeffrey H. Folger
Environmental Planner
Town of South Windsor
Re: Appl #-05-06P - Review of Vans RV Center site plan, 417 John Fitch Blvd. -
Plans dated 11/29/04.
I have reviewed the site plans for the proposed John Fitch Partnership site plan with the
following initial comments:
1. There are numerous areas along the western slope that are failing due to
stormwater flowing off of the parking area. This site was filled in the past
without any engineering review of plans. The material used (concrete, asphalt,
and unknown material) is unstable as evidenced by the eroded gullies forming
anywhere water is concentrated.
It is my professional opinion that any work on the slope that does not entail
stabilization activities is reasonably likely to negatively impact adjacent wetlands
on and off of the site.
Due to the dubious history of filling on the site and lack of information and
approvals, data needs to be provided on the nature of the subsurface material to
determine suitability of infiltration on the site. The Soil Survey identifies soil east
of the old house foundation as being Windsor Loamy Course Sand. This soil type,
if verified, may provide to opportunity to infiltrate a significant portion of the site,
reducing the water volume that would have to be discharged from the site.
Additionally, the gullied area to the south should be seriously considered as a
discharge point for stormwater that can't be infiltrated.
cc. Town Engineer
Town Planner
IWA/CC
MICHAEL F. GRAGNOLATI
45 North Street
G `^
P.O.Box 3127 :
Windsor Locks,Connecticut 06096-31274
Tel/Fax 860-623-2588 DEC
2- ",- ' 3 2044
December 23, 2004 �
Joseph Russo, P.E.
J.R. Russo Associates
1 Shoham Road
East Windsor, CT 06088
RE: Wetland Delineation
Van's RV
417 John Fitch Boulevard
South Windsor, Connecticut
Dear Mr. Russo:
This letter is to confirm that in August 2004 I examined the above referenced site for the
presence of wetlands and watercourses as defined by Connecticut State Statutes. My
investigations were conducted utilizing a spade and auger.
The wetland boundaries were marked with numbered blue flagging in the field to be located by
your firm.
The wetlands delineated on site are to the rear of the lot at the base of a steep slope. Predominant
wetland soils are Limerick silt loams
Limerick soils are very deep (>65 inches),poorly drained loamy soils that formed in alluvial
sediments. They are nearly level soils on floodplains subject to frequent flooding. Permeability
of the Limerick soils is moderate in the loamy layers and rapid or very rapid in the underlying
sandy materials.
Vegetation is predominately red maple and green ash with an understory of highbush blueberry,
cinnamon fern and sensitive fern.
If you should have any questions, please call this office at your convenience.
Sincerely;
Michael F. Gra lati
Registered Professional Soil Scientist
04-076
f
DRAINAGE REPORT
Van's RV Center Dec 9 3
417 John Fitch Boulevard , ; 2004
South Windsor, Connecticut »:>,
Narrative: Vw"
Vanco Associates proposes to pave an existing gravel surfaced inventory storage area at their
recreational vehicle sales and maintenance facility. The Van's RV Center facility is located
on the west side of John Fitch Boulevard in South Windsor, Connecticut. The inventory
storage area is located on an existing 1.34-acre parcel adjacent to and south of the main
facility, a 2.72-acre parcel.
The existing storage area has a compacted gravel surface that is essentially impervious.
Therefore, the proposed paving will not increase impervious areas and will not result in any
significant increase in peak runoff rates from the site. In an effort to improve the quality of
stormwater runoff, the perimeter of the storage area will be curbed and runoff will be
collected in,a new storm drainage system with a Town approved sediment and oil separator
system with a high flow bypass. The drainage outlet will be armored against erosion with a
preformed scour hole designed to State specifications. The drainage pipes are designed to
accommodate peak flow rates for a 25=year storm event. The rational method was used to
estimate peak flow rates as follows:
Pipe Sizing Calculation:
A= 1.2 acres
C =0.9
to= 5 minutes
i25 =6.7 inches/hour
Q25 =C i25 A=0.9 x 6.7 x 1.2= 7.2 cfs
18" CPEP Type-S @ 1.56%=Qcap= 14.2 cfs
24" RCP @ 0.5%=Qcap = 17.3 cfs
Preformed Scour Hole Design:
Rp=24"=2.Oft.
TW=0.25 ft. (assumed)
Q =7.2 cfs
d5o =(0.0125Rp2/TW)(Q/Rp2.5)1.33 = (0.0125 x 2.02/0.25)(7.2/2.02.5)1.33 =0.28 ft. (modified)
Use intermediate riprap for larger storms and greater factor of safety.
Use Type 1 scour hole (10 ft. x 12 ft. x 1 ft. deep)
Vans RV Center
Manning Pipe Calculator
Given Input Data:
Shape . . . . . . . . . . . . . . . . . . . . . . . circular
solving for . . . . . . . . . . . . . . . . . . . . . Flowrate
Diameter . . . . . . . . . . . . . . . . . . . . . . . . 1.5000 ft
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5000 ft
Slope . . . . . . . . . . . . . . . . . . . . . . . . 0.0156 ft/ft
Manning's n . . . . . . . . . . . . . . . . . . . . . 0.0120
Computed Results:
Flowrate . . . . . . . . . . . . . . . . . . . . . . . . 14.2132 cfs
Area . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7671 ft2
wetted Area . . . . . . . . . . . . . . . . . . . . . 1.7671 ft2
wetted Perimeter . . . . . . . . . . . . . . . . 4.7124 ft
Perimeter . . . . . . . . . . . . . . . . . . . . . . . 4.7124 ft
velocity . . . . . . . . . . . . . . . . . . . . . . . . 8.0430 fps
Hydraulic Radius . . . . . . . . . . . . . . . . 0.3750 ft
Percent Full . . . . . . . . . . . . . . . . . . . . 100.0000
Full flow Flowrate . . . . . . . . . . . . . . 14.2132 cfs
Full flow velocity . . . . . . . . . . . . . . 8.0430 fps
Page 1 of 1
• Vans RV Center
Manning Pipe Calculator
Given Input Data:
shape . . . . . . . . . . . . . . . . . . . . . . . Circular
solving for . . . . . . . . . . . . . . . . . . . . . Flowrate
Diameter . . . . . . . . . . . . . . . . . . . . . . . . 2.0000 ft
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0000 ft
Slope . . . . . . . . . . . . . . . . . . . . . . . . 0.0050 ft/ft
manning's n . . . . . . . . . . . . . . . . . . . . . 0.0120
Computed Results:
Flowrate . . . . . . . . . . . . . . . . . . . . . . . . 17.3295 cfs
Area . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1416 ft2
wetted Area . . . . . . . . . . . . . . . . . . . . . 3.1416 ft2
wetted Perimeter 6.2832 ft
Perimeter . . . . . . . . . . . . . . . . . . . . . . . 6.2832 ft
velocity . . . . . . . . . . . . . . . . . . . . . 5.5161 fps
Hydraulic Radius . . . . . . . . . . . . . . . . 0.5000 ft
Percent Full . . . . . . . . . . . . . . . . . . . . 100.0000
Full flow Flowrate . . . . . . . . . . . . . . 17.3295 cfs
Full flow velocity . . . . . . . . . . . . . . 5.5161 fps
critical Information
Critical depth . . . . . . . . . . . . . . . . . . 1.8863 ft
critical slope . . . . . . . . . . . . . . . . . 0.0059 ft/ft
Critical velocity . . . . . . . . . . . . . . . 7.3339 fps
Critical area 3.3435 ft2
Critical perimeter . . . . . . . . . . . . . . 4.9143 ft
Critical hydraulic radius . . . . . . . 0.6804 ft
critical top width 2.0000 ft
specific energy . . . . . . . . . . . . . . . . . 2.7328 ft
Minimum energy 2.8295 ft
Froude number 0.9060
Flow condition . . . . . . . . . . . . . . . . . . subcritical
Page 1 of 1
8.7-4 Culverts
and
Type B Riprap Apron(Maximum Tailwater Condition)
Wi =3Sp(min.)
W2 = 3Sp+0.4La for TW > 0.5 Rp
Wl = width of apron at pipe outlet or upstream apron limit
W2 = width of apron at terminus or downstream apron limit
Type C Riprap Apron
For a Type C Riprap Apron when there is a well defined channel downstream of the outlet, the
bottom width of the apron should be at least equal to the bottom width of the channel and the lining
should extend on the channel side slopes at least 0.3m (1 ft) above the tailwater depth (TW) or at
least two-thirds of the vertical conduit dimension(0.7 Rp) above the invert,whichever is greater. (In
all cases,the overall width of the apron shall be a minimum of 3Sp). See Figure 8-10.
Additional guidelines:
• The type of apron to be used and length should be called out on the construction plans.
• The side slopes of the Type C riprap apron should be 2H:1 V or flatter.
• The bottom grade should be level or minimum slope, where practical, for energy dissipation.
Where the use of a flat apron is impractical,a preformed scour hole should be considered.
• Granular fill shall be placed between the riprap and the underlying soil to prevent soil
movement into and through the riprap. Additionally, an appropriately sized geotextile
(separation)can be used when field conditions dictate as determined by the engineer.
• The location of outlets and outlet protection should be carefully considered to minimize rights-.
of-way and wetland impacts.
8.7.6 Preformed Scour Hole
The preformed scour hole is an excavated hole or depression which is lined with rock riprap of a
stable size to prevent scouring. The depression (F) provides both vertical and lateral expansion
downstream of the culvert outlet to permit dissipation of excessive energy and turbulence.
Equations 8.13 and 8.14 are used to determine the median stone size (d50)required for the lining of
the two types of preformed scour holes presented below. The first type, Type 1, represented by
Equation 8.13, is depressed one-half the pipe rise and the second type, Type 2, represented by
Equation 8.14, is depressed the full pipe rise. A significant reduction in stone size is achieved by the
excavation. Therefore, the scour hole depressed the full pipe rise would require a smaller stone size,
however the dimensions of the hole would be larger. The type that provides the most economical
and practical design given the site conditions should be selected. The dimensions of a preformed
scour hole are determined by the set of Equations 8.15 and Figure 8-11.
ConnDOT Drainage Manual October 2000
Culverts 8.7-5
Empirical Preformed Scour Hole Equations:
Type 1: Scour Hole Depression=one-half pipe rise, m(ft)
d50= (0.0276 Rp2/TW)(Q/RP2.5)1333 ( d5o=(0.0125Rp2/TW)(QW)1.333 ) (8.13)
Type 2: Scour Hole Depression= full pipe rise,m(ft)
d50= (0.0181 RP2/Tw)(Q/RP2S)1333 !d50=(0.0082RP2/Tw)(Q/RP2S)1.333) (8.14)
d5o=median stone size required,m(ft)
For variables Sp, 4 TW and Q,see Section 8.7.5.
Type 1 and 2 preformed scour hole dimensions(See Figure 8-11)
C =3SP+6F Basin Length m(ft)
B=2SP+6F Basin Inlet and Outlet Width m(ft) (8.15)
F =0.5Rp(Type 1)or Rp(Type 2) Basin Depression m(ft)
Table 8-8 solves the above set of equations for Type 1 and 2 preformed scour holes for various pipe
sizes.
- The type of riprap required is as follows:
Modified d5o<0.13m(0.42 ft)
Intermediate 0.13m(0.42 ft)<d5o<0.20m(0.67 ft
Standard 0.20m 0.67 ft <d5o<0.38m 1.25 ft
Special Design 0.38m(1.25 ft)<d5o
Reference: Report No. FHWA-RD-75-508 ("Culvert Outlet Protection Design: Computer Program
Documentation")
October 2000 ConnDOT Drainage Manual
M
Culverts 8.7-11
OUTLET PROTECTION
OUTLET VELOCITY>14 feet/sec or Length of Apron exceeds limits shown on
Tables 8-6.1 and 8-7.1
Preformed Scour Hole
PIPE DIAMETER in
(See Figure 8-11) 12 15 18 1 24T 30 36 1 42 1 48 54 60
Type I
B 5 6 8 10 13 15 18 20 23 25
C 6 8 9 12 15 18 21 24 27 30
d Depends on riprap type(see Figure 8-11)
2Sp 2.0 2.6 3.0 .4.0 5.0 6.0 7.0 8.0 9.0 10.0
I
3Sp 3.0 3.9 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0
F=0.5 Sp 0.5 0.625 0.75 1 1 1.25 1.5 1 1.75 2 2.25 2.5
f Type 2
B 8 10 12 16 20 24 28 32 36 40
C 9 11 14 18 23 27 32 36 41 45
d Depends on riprap size(see Figure 8-11)
2Sp 2.0 2.6 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
3Sp 3.0 3.9 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0
F=Sp 1.0 1.3 1.5 1 2.0 1 2.5 1 3.0 1 3.5 1 4.0 4.5 5.0
Table 8-8.1-Dimensions of Preformed Scour Hole(Feet)
October 2000 ConnDOT Drainage Manual
p`ZCwN 3
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• �� 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CT 06074
soR.00 TELEPHONE (860) 644-2511
Date: December 29, 2004
To: J.R. Russo & Associates
1 Shoham Road
East Windsor, CT 06088
From: Jeffrey H. Folger
Environmental Planner
Town of South Windsor
Re:: Appl # 05-06P - Review of Vans RV Center site plan, 417 John Fitch Blvd. -
Plans dated 11/29/04.
I have reviewed the site plans for the proposed John Fitch Partnership site plan with the
following initial comments:
1. Please provide test pit information to determine if roof runoff can be successfully
infiltrated.
2. Maximize infiltration on the site.
3. A stormwater inspection and maintenance-plan should be included on the plan.
Currently, there is nothing on the plan that addresses post construction
stormwater structures.
4. A more efficient gross particle separator should be used instead of the proposed
bypass separator to effectively treat stormwater runoff to attempt to achieve an
80% pollutant removal rate.
5. The proposed catchbasins should have 4-foot sumps for maximum storage of
sediments and be equipped with trap-hoods to contain floatables. The detail for
trap-hoods should be shown on the plan and state that all catchbasins will be
equipped with trap-hoods.
6. The western slopes on the site are very steep and are comprised of highly
erodable soil. The plan does not provide enough detail concerning access to the
toe of the slope to install the pipe, drop structure, outlet structure and energy
dissipater.
7. A detail of the dropstructure should be included in the plans. Water velocity
p Y
exiting the outlet structure should be minimized to avoid scour beyond the
energy dissipater.
8. A detailed slope stabilization plan must be submitted.
9. The stormwater outfall to the north of the proposed activity is inadequate to j
convey runoff in a safe and stable manner. The outfall is unprotected and
significant erosion is occurring in the floodplain. The results in sediment
impacting the Podunk River. The outfall must be re-constructed or eliminated,
and runoff redirected to a stable outfall.
10. Due to the history of failures on slopes of this type, the lack of stabilizing
vegetation on the slope, the extreme steepness of the slope, and the high
likelihood of wetland disturbance, I would recommend leaving a 20 to 30 foot
zone of undisturbed land along the top of the slope and stabilizing this area with
appropriate deep-rooted plantings.
cc. Town Engineer
Town Planner
IWA/CC
MEMORANDUM
To: South Windsor Inland Wetland/Conservation Commission.
From: Jeffrey H. Folger—Environmental Planner/Conservation Officer
Date: January 4, 2005
Re: Appl. #05-06 Review of the proposed Vanco RV center site plan at 417 John Fitch Blvd. Plans dated
11/29/04
The project is to seek approvals and create a 44,000-sgft parking/storage are for inventory. Stormwater is
proposed to be discharged onto an energy dissipater, which will empty into the Podunk River. Proposed
activity within regulated areas equal 205 sgft,proposed activity within the URA equal 9,500 sqft.
Site: The site is located in the Podunk River watershed. The site is comprised of a lot totaling 1.3 acres.
Currently the site has a large number of RVs parked on a gravel surface. It abuts the main store and show
room facility. This parcel is comprised of 2.7 acres. Present impervious coverage of the combined
parcels is estimated at>65%. The proposal also includes the acquisition of an additional parcel to the
west. This parcel runs along the east bank of the Podunk River and is approximately 3 acres in size. This
land is unbuildable but would be used to achieve an impervious quotient of 62.5% for the total property.
The current active portion of the site is a commercial use. The facility is located on a large flat area
between Route 5 and the Podunk River just north of Chapel Road. The area appears to have been a
terrace escarpment that received fill to enlarge the usable area. The 30'+high slopes go up to the
floodplain of the Podunk. The slopes exceed a 2:1 vertical pitch. The surface material on the slopes
appears to be unconsolidated material of dubious origin. Large pieces for concrete, and asphalt are
present on the surface and within the large gullies present on the slope formed by surface runoff from the
parking area. There does not appear to be any topsoil, and the vegetation that exists on the slope is
consistent with vegetation found on disturbed areas. Several gullies have formed due to runoff from the
parking area travelling over the slope. This has resulted in fill material being deposited onto the
floodplain. This slope remains unstable. The proposed plan does not address the stabilization of this
slope.
A catchbasin currently exists to the north of the proposed stormwater structure, which originally had an
outfall exiting onto mid-slope. The location of this outfall resulted in an eroded gully forming from mid-
slope to the toe of the slope. It appears that an effort was made to address the problem by attaching a large
PVC pipe to the outfall and bringing the pipe to the toe of the slope. This action arrested the progression
of the eroded gully but resulted in a large scour hole forming in the floodplain beyond the slope.
Regulated areas on the site consist of the main stem of the Podunk River and its eastern floodplain. This
portion of the river contains meanders in the sandy soils present. The floodplain adjacent to the subject
site ranges from 30 to 100 feet wide. The stream channel width averages 10 to 15 feet with a depth of 3 to
6 feet. The channel bottom is comprised of medium to fine sands. The streambed is active with
sedimentation reacting to seasonal changes in flow.
The floodplain would be classified as a wooded wetland type. Red maple, Cottonwood, and Silver maple
dominate the over story. The understory vegetation is limited due to the dense canopy. Emergent
vegetation(skunk cabbage, false hellebore, and jack-in-the-pulpit) is quite thick during the growing
season. The wetland boundary starts at the toe of the slope.
The second wetland area is located along the southern property boundary. This area is an eroded gully
that in the past conveyed runoff from the properties bordering on the north and south and groundwater
seepage. Historically, the gully was larger. In reviewing the 1986 and 1996 air photos and the Town
topographic maps (1986), it appears that significant filling was done along the south and west of the
property. This made the gully smaller.
Impacts: The soils listed on the site report are Windsor Loamy Coarse Sand(WuA) 0 to 3% slope and
Terrace Escarpment(Tg)in the non-filled areas. Perimeter erosion controls will not be adequate to contain
sediments from construction activities. The plan does not show enough detail to demonstrate how the
construction would be accomplished or how the area on the slope would be accessed. The deep sandy soil
shown on the Soil Survey in the eastern portion of the site should be investigated to determine if
infiltration could be accomplished.
Based on the steepness of the slope, the instability of the slope material, and lack of detail on the
construction procedure,there is a high likelihood that the adjacent wetlands will be negatively impacted
by the proposed activity.
Alternatives have not been adequately explored,namely infiltration, and alternate areas on the site to
direct flow.
Current runoff patterns have caused significant erosion on the western slope. The site plan proposes to
curb the perimeter of the parking area. This will prevent sheet flow from further degrading the slope. Re-
directing flow away from the western portion of the site is another option that the applicant should
consider.
Mitigation: No mitigation has been proposed for the wetland disturbances.
January 13,2005
I have met with the applicant and his engineer on the issues of concern. The plan is to be revised to shift
the location of the outfall, and address infiltration possibilities.
r
4c+'" ate
To� 074C S-aum V&Uaot
1540 SULLIVAN AVENUE • SOUTH WINDSOR, CT 06074
oe-co TELEPHONE(860) 644-2511
February 10, 2005
Certified #70020460000197443999
J. R. Russo&Associates
1 Shoham Road
East Windsor, CT 06088
RE: Appl. #05-06P—Vanco Associates
Dear Mr. Steele:
At the February 2, 2005 regular meeting, the Inland Wetlands Agency/Conservation
Commission approved application #05-06P—Vanco Associates—417 John Fitch Blvd. — Inland
Wetland/Conservation Commission application for regulated activities in connection with the
construction of a 40,000 sq. ft. RV parking/storage, stormwater system, and associated
improvements on property located westerly of John Fitch Blvd. (Rte. 5), and northerly of Chapel.
Road. 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 February 2, 2010. It is the
landowners)/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.
6. A recommendation by Town staff that a seed mixture containing 30% Crown Vetch; 30%
Tall Fescue; and 30% Big Blue Stem as a permanent seeding at a rate of 4lbs/1000 sq.
ft. An application of annual rye will be used as a nurse crop at a rate of 5lbs/1000 sq. ft.
Vanco Associates
February 10, 2005
Page 2
7. We recommend a bond in the amount of$5,000 be submitted to the Planning &
Zoning Commission to ensure compliance with the erosion and sediment control
measures.
Very truly yours,
INLAND WETLANDS AGENCY/
CONSERVATION COMMISSION
,6 1 ✓ ' <�
Philip Forzley, Vice Chairperson
PF:dr
cc: Chief Building Official
Vanco Associates
1DNN S.
70-wn O-Ps-0uzA ?d&U:140t
m 1540 SULLIVAN AVENUE • SOUTH WINDSOR, CONN. 06074
soR.co AREA CODE 860/644-251 1
October 24, 2005
Mr. Mark Van Ostrand
.Vanco Associates
417 John Fitch Boulevard
South Windsor, CT 06074
Dear Mr. Van Ostrand:
Re: Expiring Letters of Credit,Appl 05-06P, Vanco Associates
The Planning and Zoning Commission is holding the following Letter of Credit:
PROJECTS BANK AMOUNT EXPIRATION
E& S Bond Alliance $5,00.0. February 2, 2006
In accordance with our policy for accepting Letters of Credit in lieu of surety bonds, we must
have an amendment to each expiring Letter of Credit well in advance, extending the term for a
one-year period from the expiration date. Will you please forward us the amendment promptly?
Very truly yours,
n
. A
Michele R. Lipe
Assistant Director of Planning
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