HomeMy WebLinkAboutDrainage ReportDrainage Summary Report!
For the % . ~F°~~D
Carmel Hotel Indigo ~ °°~
August 22nd, 2008
Rev. 11-21-2008
Prepared By:
CDG Consulting, Inc
PO Box 692
Zionsville, IN 46077
Prepared For:
Dykstra Building Corporation
8465 Keystone Crossing
Suite 100
Indpls, IN 46240
Table of Contents
1. Project Overview
2. Storm Sewer Tabulation Sheet
3. Support Data
4. Appendix - O & M Manual for Stormwater Quality BMP
Project Overview
The 3.18 acre site is located in the Northeast quarter of Section 26, Township 18
North, Range 3 East, in Clay Township, Hamilton County, Indiana. The site is generally
located on the north side of West Main Street (131x` St.), just south of and adjacent to the
U.S. 31 limited access right-of--way The site is primarily covered with grass/weeds and a
portion of the site was previously been used for religious/church purposes. The site is
surrounded by B6 zoning/use.
This site will become the new Carmel Hotel Indigo. As shown on the site plan, the
development will have an access drives off of a proposed interior access drive which will
connect to 131t Street to the south and potentially Sonna Drive to the east. The overall
development was approved by the Carmel Plan Commission under Docket Number
07040024DP.
The pavement will be constructed of H.A.C. as shown on the construction plans,
with a 6" straight curb surrounding the parking azea. The site will have 118 parking
spaces (2 disabled), and across-parking agreement is in effect with the original developer.
A 5' concrete walk with monolithic curb will be located around the perimeter of the
building. There will be alawn/landscape separation from the sidewalk to the building
varying in width.
A bioretention/detention facility will be constructed on the site by the
owner/developer of the overall development. Details of this facility aze contained in
construction plans prepared by Cripe Architects + Engineers dated 10-17-08 and identified
as project 0060384-20300. bile this facility will provide stormwater quantity control for
the entire (overall) development, stormwater quality control for lots within the
development is the responsibilty of the individual lot owners. As shown on the plans and
these calculations, anAqua-swirl ASS will serve as the site's BMP to provide post-
construction water quality treatment.
Storm Sewer Tabulation Sheet
FOR THE DEPART1iEMT Of PU6LIC NORMS
STORIS DRAIN FLOG' TABULATION FORt1 PROJECT ~. 2CZa'~, /
SHEET N0. ~ t OF o .`
LOCATION l~A!!'.~fi° ~ c'_._ ; r!-i
- DATE ~ ` %~
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PROJECT KAME`""""`4 ""~_C__ ',;
i~ J~~ ~'~, ~:.~ COMPUTED BY C/~/"..~%';=~a
STORK FREQUENCY DES16N YEAR /t~ ';~
CHECKED BY
LOCATION INLET ACRES
COEFF.
CA
=~ TIKE C ONC.
FROM TO AREA SUB, TOTAL °C' INLET DRAT
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- KIN, INTEN. Q ^ CIA PIPE n ^
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TOTAL °I° C.F,S. SIZE SLOPE YEL. L67H.
S Cam./Z / 30 /Z" ~~ 2.2 !ate
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Support Data
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MAP LEGENI[J MAP INFORMATION
Area o! In
-- -. terest (AOII
n
'ed/'~gto^pptS
.., Original soil survey map sheets were prepared at publication scale.
p Aree of Interes (AOq VeV&t3bbi Viewing scale and prinFing scale, however, may vary from the
~ original. Please rely on the bar scale on each map sheet for proper
Soils Alfalhni map measurements.
' Soil Map Units
Speciak Efhaa~res Source of Map: Natural Resources Conservation Service
special Point Features ;upully Web Soil Survey URL: htlp:/Iwebsoilsurvey.nres.usda.gov
8tnwmn Coordinate System: UTM Zone 16N
hBtr6g±~
~ Bonow Pig This Froduct is generated from the USDA-NRCS certified data as of
X Clay Spat
' 'ir~nhe~
the version date(s) listed below.
•.
Closed Depression PoliticaS FealsSe~ $el SUNe Area: Hamilton ('ipUnt Indiana
Muniega~aies SUNay Area Da[a: Version 7, JUn 24, 2008
Gravel Pit t3 :itl~tie:
Date(s) aerial images were photographed: 1998
Gravelly Spai ~ Irt4irkdkraas
The orthophoto or other base map on which fhe soil lines were
Landfill water Fecanres compiled and digitized probably differs from the background
Lava Flow )aEarst imagery displayed on these maps. As a result. some minor shining
'= it ~t~~~ of map unit boundaries may be evident.
,~, Marsh - ~-
µ
~ Mine or Quarry Transpmaalion
' a..Ft IalRails
Qo Miscellanenne Wafer
Roar$
~) Perennial Water ~, iic~
., Rock Oulaop IS ~gies
~
} Saline Spot inks
Sandy Spot _„ ~. odah~beds
Severely Eroded Spot Alt-AIP@yads
Sinkhole
s Slide or Slip
p' Sodic Spot
Spoil Area
Stony Spot ,
s„:
Natural Resources Wct{ilffiuf5ey 2.0 7/t 3/2008
Conservation Service NaAt~Y6~re Soil Survey
Page 2 of 3
Soil Map-Hamilton County, Indiana Hotel Indigo
Map Unit Legend
Hamilton County, Indiana (INO57)
Map Umt Symbol Map Unit Name Acres in AOI Percent of AOI
Br ~ Brookston silty clay loam ~ 0.1 ~ _ 2.8%I
_----~'~, Y P
CrA Crslo ecilt barn, 0 to 3 ercent ~I 3.1 97.2%
I_ P
--I_-_ _-_..-___-__...__..____
Totals far Area of Interest (AOI) ~ 3.2 j 100.0%1
USDA Na[urel Resources Web Soil Survey 2.0 7/13/20D8
Conservation Service National Cooperative Sail Survey Page 30/3
' Rainfa!! intensity (inches/Hour)
DurnNon Return Period (Years)
Z 5 10 25 50 100
5 Min. 4.63 5.43 6.12 7.17 8.09 9.12
10 Min. 3.95 4.63 5.22 6.12 6.90 7.73
15 Min. 3.44 4.03 4.55 5.33 6.01 6.77
20 Min. 3.04 3.56 4.02 4.71 5.31 5.99
30 Min, 2 a6 2.88 3 25 3.8' 4.29 4.34
40 Min. 2.05 2.41 2.71 3.I8 359 4.05
50 Min. 1.76 2.06 2.33 2.73 3.07 3.47
Ili r. 1.54 1.80 2.03 2.38 2.68 3.03
I S Hrs. L07 1.23 L42 L63 1.91 2.24
2 Hrs. 0.83 0.95 L1 l 1.37 1.60 1.87
3 Hrs. 0.59 0.72 0.84 L04 1.22 1.42
4 hlrs- 0.47 0.58 068 O.R4 0.99 I.IS
5 Hrs. 0.40 0.49 0 58 0.71 0.83 0.97
6 Hrs. 0.35 0.43 0.50 Ob2 0.72 O.RS
7 Hrs. 0.31 038 0.44 0.55 0.64 0.75
R Hrs. 028 0.34 0.40 0.0.9 0.57 0.67
9 Hrs. 025 Q3I 0.36 0.45 0.52 0.61
IO Hrs. 023 0.28 033 0.41 OA8 O.S6
]2 hlrs. 0.20 0.24 0.29 0.35 0.47 0.48
14 }Irs. 0.17 022 0.25 031 0.36 0.42
16 Hrs. 0.16 0.19 0.23 0.28 0.32 0.38
] 8 Hrs. 0.14 0.17 0.20 0.25 029 0.34
20 Hrs. 0.13 0.16 0.19 -0.23 0.27 0.3 I
24 Hrs. 0.17 0.14 0.16 0.20 0.23 0.27
Source: Purdue, A. N., et. al., "Slat isti cai Characteristics of Short Time Incremental 4ainfail",
Aug., 1992. (values in this table are based on IDF equation antl coefficients provitled £or
Indianapolis, IN.)
TABLE 201-2: Rainfall Intensities for Various Return Periods and Storm Durations
2OU-8
"TYPE OF SIIRFACF. KUNOFF COFFf'ICI7;1V'P"
Mon-Urban Areas
Bare earth 0.jj
Steep grassed areas (slope 2:1) 0.(,0
"Turf meadows 0.25
Forested areas 0.20
Cultivated fields 0.30
Urban Areas
All watertight roof surfaces 0.90
Pavement 0.85
Gravel 0.85
impervious ,niis (hea-vyj 0.55
Impervious soils (with turf)- OAS
Slightly pervious soil 0.25
Slightly pervious soil (with turd 0.20
Moderately pervious soil ~ 0.1 j
Moderately pcrvions soil (with [wi) 0.10
13usiness, Commercial Rc hrdwtrial 0_gj
Apartments & Townhouses 0.70
Schools & Churches O.jj
Single Family LOLS < 10,000 SF 0.45
Lots < 12,W0 SF 0.4j
Lots <~ 7000 SF 0.40
Lots> % acre 035
Park, Cemetery or Ururnproved Area 030
TABLE 202-1: Ruanff Coetficicats ®for Usc is the Ratioaal 1Nethod
200-7
Rainjall Deplh (/nches)
Dnrnfion llahvn Period (3'earsJ
2 I 5 10 25 50 100
24 Hrs. 2.66 3.27 3.R3 4.72 5.52 6.46
So u: ce: Purdue, A.M., nt. al ., "Stat isc ical Cha rac[eristice of Short Time Incremental
Rainfall", Aug., 1992. (Val ues in Chi. table are based on IDF eyuati on and coef£i ci.e nCs
provided for Indianapolis, IN.)
TABLE 201-3: Rainfall Depths for Various Relu rn Periods
Cumulafive
Percent
ojSform Time Cumu/ativo
Percent of
S1o+on Uepth
0 0
5 1
10 3
IS 4
20 6
25 R
30 10
35 13
40 I7
45 22
50 64
55 78
60 84
65 R7
70 90
75 92
80 94
85 96
9U 9R
95 99
100 100
TABLE 201 ~: NRC5 Type 2 Rainfall Distribution Ordinates
200-9
Appendix - O & M Manual for Stormwater Quality
BMP
AquaShield"" Stormwaier Treatment Systems
o Aqua-SwirdT"' Sizing Chart Eno/ishl
Aqua-SwirlTM
~ Maximum
Stub-Out Pipe Water
quality Oil/Debris Sediment
Model Cb
ber
Outer
Treatment Storage Storage
Diameter Diameter FlowZ Capacity Capacity
ft, !n= ~~ al f'i3
AS-2 2.50 1.1 37 10
g 12
AS-3 3.25 10 ' 16 1.8 110 20
AS-4 4.25 12 18 3.2 190 32
AS-5 5.00 12 24 4.4 270 45
AS-6 6.00 14 30 6.3 _ 390 65
AS-7 7.00 16 36 8.6 540 90
AS-8 8.00 18 42 11.2 710 115
AS-9 9.00 20 48 14.2 910 145
AS-10 10.0 22 54 17.5 1130 i80
AS-12 12.0 24 48 25.2 1698 270
AS-XX* Custom -- -- >26 -- --
.o.o vr."~=.~ ..rer.rwnr now rams can ce aev9nm wiN multiple swirls.
1} The Aqua-SwiN"' Conveyance Flow Diversion (CFOJ provides fu// beahnent
of the 'first flush," whi/e the peak design storm is diverted and channe%d
through the main conveyance pipe. Please refer to your /aces/ representative for
more information.
2) Many regulatory agenaes are establishing "water qua/ity treatment flaw 2tes"
for their areas based on the initial movement of po//utants into the storm
drainage system. The treatment flow rate of the Aqua-SwidT"' system is
engineered to meet of exceed the /aces/ water qua/ity lmatment criteria. This
"water qua/ity beatment How rate' typi~//y represenLr approximately 90%
to 95% of the toles/annual runoff volume.
The design and orientation of the Aqua-Swid'TM gene211y entails some degree of customization. For
assistance in design and speafic sizing using historical rainfall data, please refer to an AquaShieltl'"
representative or visit our website at www.AquaShieldlnc.mm. CAD details and specifications are
available upon request
Owner Acknowledgement Agreement ("Agreement")
For good and valuable consideration, die receipt and sufficiency of which are hereby
acknowledged, the undersigned owner ("Owner") hereby submits this Operation and
Maintenance Manual ("Manual") to the City of Cv~mel, Indiana ("City") as a written
acknowledgement of Owner's warranty and agreement to institute, maintain, and follow
the water quality Best Management Practices (`BMPs") listed below, and to follow and
abide by the inspection schedule and maintenance activities listed in this Manual. The
Owner also hereby agrees to provide, at Owner's cost, all additional maintenance, repair,
and/or replacement services reasonably necessary to maintain the funceion and longevity
of the BMPs from and including the date this Agrccmert is executed by Owner to and
including the date nn which a new Agreement is filed with U~c Cily by another party who
assumes all of the obligations and responsibilities of Owner as set forth herein.
I3MPs:
Owner Sibnature
Printed Name
S"GATE OF INDIANA
COUN'T'Y OF I{AMIL1'ON
SS:
Date
Company
I3E[~ORE ME, the undersigned, a Notary Puhlic in and for said County and State,
personally appeared Owner subscribed and
sworn before This day of ,
County of Residence Signature
Commission Expiration Date
Ptintcd Namc
.,'-fig !'~i:~!il[c:I ~.:~Ii~('
-~- Inspection
All AquaShieldr" products can be inspected from the surface, eliminating the
need to enter the systems to determine when cleanout should be performed.
In most cases, AquaShield'"' recommends a quarterly inspection of the
Stormwater Treatment Systems for the first year of operation to develop an
appropriate schedule of maintenance.
Based on experience of the system's first year in operation, we recommend that
the inspection schedule be revised to reflect the site-specific conditions
encountered. Typically, the inspection schedule for subsequent years is reduced
to semi-annual inspection.
Aqua-SwirlT'" Maintenance
The Aqua-Swiri"" has been designed to minimize and simplify the inspection and
maintenance process. The system can be inspected and maintained completely
from the surface, thereby eliminating the need for confined space entry.
Furthermore, the entire structure (specifically, the floor) is accessible for visual
inspection from the surface. There are no areas of the structure that are blocked
from visual inspection or periodic cleaning.
Inspection of any free-floating oil and floatable debris can be directly observed
and maintained through the manhole access provided directly over the swirl
chamber.
Aqua-Swirl'" Ynspection Procedure
To inspect the Aqua-Swirl'"',. a hook is needed to remove
the manhole cover. AquaShield'"' provides a customized
manhole cover with our logo to make it easy for
maintenance crews to locate the system in the field. We
also provide a permanent metal information plate attached
inside the access riser, which provides our contact
information, the Aqua-Swirl"" model size, and serial
number.
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Sediment inspection
using a stadia rod
The only tools needed to inspect the Aqua-Swirly`" system are a flashlight and a
measuring device such as a stadia rod or pole. Given the tremendous
accessibility provided, floating oil and debris can be observed directly from the
surface. Sediment depths can easily be determined
by lowering a measuring device to the top of the
sediment pile and to the surface of the water.
When the sediment pile is within 30 to 36 inches of
the water surface, the system should be
maintained.
It should be noted that in order tc avcid
underestimating the volume of sediment in the
chamber, the measuring device must be carefully
lowered to the top of the sediment pile. The finer
sediment at the top of the pile, typically offers less
resistance to the measuring device than the larger
particles.
Aqua-Swirly" Cleanout Procedure
Clean out of the Aqua-Swirl'" is simple. Free-floating oil
and floatable debris can be observed and removed directly
through the 30-inch service access provided.
A vacuum truck can be used to remove the accumulated
sediment and debris. It is important to note that the entire
sediment storage area can be reached with a vacuum hose
from the surface (reaching all the sides).
Disposal of the material is typically treated in the same
fashion as catch basin cleanouts. AquaShieldr"
recommends that all materials removed be handled and
disposed of in accordance with local and state requirements.
____
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Vacuum truck cleans the
Aqua-SWirl`"
An "Inspection and Maintenance Manua/" is provided with each Aqua-Swirly"'
system far more detai/ed maintenance procedures. On the fol%wing page, you
will find sample Inspection Data Sheets
4
F
® Aqua-SwirlT'" Inspection Data Sheet
Location:
Date Inspector
Name Distance to
Sediment
(in.) Distance to
Water
(in.) Floatable
Layer
Thickness
describe Maintenance
Required?
(yes/no)
t ,
-~- •Aqua-SwirlT'" Maintenance ®ata Sheet
Inspector: Date:
.Location: Time:
INSPECTION
General Site Condition
Visible Evidence of Spills/ Releases (oils, grease, fuels, paints, chemicals):
visible tvitlence o1=Heavy Sediment Deposition:
Swirl
Condition of Swirl:
Condition of BafFle
Distance to Sediment:
Distance to Water:
**Note: If sediment is less than 30 to 36 inches below water surface, sediment
should be removed.
CONTAMINATYON REMOVAL DATA
Floating Oil and Debris
Approx. Volume:
Description:
Elapsed Removal Time:
Sediment
Approx. Volume:
Description:
Elapsed Removal Time:
Other Comments
6