HomeMy WebLinkAboutC801_Addendum #2E
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SWPPP for Construction Sites:
1. 14 Digit Wotershed Hydrologic Unit Code: 05120201090020
2. Nome of all receiving woters:Cool Creek-Grassy Branch/LitUe Cool
Creek.
3. Estlmale of peak dischorge for post conslmclion canditions
(10 year): 0.53cfs
4. Locations of specific points where starmwater discharge will
leave the site: Starmwater discharge will be minimal sheet
ilow. The majority of Stormwater will discharge to the north
via a 12-inch RCP pipe to an existing storm sewer structure.
5. Localions where stormwater may be direcUy discharged �mlo
groundwater, such as abandoned wells or sinkholes�. none on
sile.
6. Soils Map of lhe predominanl soil types: See sheet C803 for
soils map ond legend.
7. �escriptian o( potential pollulant sources associated with the
conslrmlion activities:Excavation pits can be potential sources
o( discharge into groundwaler. There is a potenlial for
discharges into graund water 6om sediment resulting from
exposed soils, leaves, mulch, and vehicular sources if o
significant roin event ocwrs while excavatlons are open. The
closesl water well to this project Is .1 mile away.
8. Temporory and permonenl stormwoter quality measures.
a. Location as shown on sheets C301 and C302.
b. Dimensions as shown on sheets C301 and C302.
c. Detailed Specificalions as described on this sheel.
d. Canstmction delails: see sheets C803-C804 (or details.
e. Monitaring and maintenance guidelines:
Coir Fber Log Check Dams
Requiremenls:
1. Material: As specified on plans or approved equal.
2. Anchoring: Use 2° x 2° woods stakes with pre-installed gwove to anchor rope binding.
3. Rope binding shall be per monufacturer's recommendations.
Instollotion:
1. Grade the site as specified in the construction plans.
2. Add lopsoil where appropriate.
3. Cut in groove to receive coir flber log.
4. Place log in groove with bottom set a minimum of 4 inches below finish grode.
5. Make sure log length is enough thot bolh ends of log extend up slope to a point above normal
flow elevation.
6. Install anchar slakes a maximum af 4 R on center an both sides of log.
7. Install rope lashing from stake ta stake per manufacWrer's recommendatlans.
8. Prepare the seedhed, fertilize (and Ilme, i( needed�, and seed Lhe area Immediately aker grading.
Maintenance:
1. �urin ve etative establishment ins e<t weekl and after si nificant slorm events of 0.5" ar mare.
9 9 P Y 9
2. Ins ect eriodicall for deterioration ar dama e from construction activities and re air immediatel .
P P Y 9 P Y
3. After the contributing drainoge area hos been stabilized, remove all strow bales and sedimenl
deposits, bring lhe disturbed arw to grode and stabilize it.
Silt Fence (Sediment Fence)
Requirements:
�roinoge oreu: Llmited watershed area to 1�4 ocre per 100 ft. of fence; further restricted by
slope steepness
Location: Fence neady level, approximately following the land wntaur, and at least 10 ft. from
toe of slope to provide a broad, shallow sediment pool.
Installation Requirements:
1. Trench: 8 in. minimum depth, Flat-bottom or V-shaped, filled with compacted soil or gravel
ta bury lower portian of support wire and/or fence fabric.
2 Supporl posts: I 1/4° x 1 1/4". hardwood posts (if used) or steel fence posts sel at
least 1(t. deep. (Steel posts should have projections for fastening (abric.)
3. Spacing of pasts: 8 it. maximum i( fence supported by wire, 6 ft. for extra-strength
fabric withaut wire backing.
4. Fence height: High enough so deplh of impaunded waler does nat exceed 1 1�2 (t. ot any
point along fence line. 18" min. height.
5. Supporl wire (optionoQ: 14 gouge, 6-in. mesh wire fence (needed i( using
standard-strength fobric).
Fence (abric�. Non-woven geotextile fabric with specified filtering eNiciency and �ensile strength
and containing UV inhibitors and stablllzers to ensure 6-ma Minimum li(e at temperatures
0- 12PF.
Maintenance:
1. Trained inspector to examine the silt fence weekly ond after each 7�" starm event.
2. If fence fabric tears, starts to decompose, or in any way becames Ineffective, replace the
affected portion immediately
3. Remove deposited sediment when it reaches half the heighl a( the fence at its lowest point
ar Is causing lhe (abric to bulge.
4. Take care ta avoid undermining the fence during clean out.
5. After the wnlributing drainage area has been stobilizeQ remove the fence and sediment
depasits, bring the disturbed area to grade, and stabillze.
Temporary Construction Entrance/Ezit Pad
Requirements:
1. The mnstructian entrance shall be lacated off of the exisling parking lot as shown on the
plans. If muddy conditions result in twcking an Road, clean up Immediately and add "wheel
wash area."
2 Material (or Gravel Construction entrance and�or Wheel Wash Are¢ 2-3 in. washed stone
(INDOT CA Na 2) over a stable foundation. Thickness: 8 in. minimum
3. Wdlh: 30 R minimum or full width of entrance�exit roadway, whichever Is greater.
4 Length: 150 ft. or as the site will accommodale minimum. The length can be shorler for
smoll sites.
5. Washing Pocility, Level area with 3 in. washed stone minimum or a commercial rack, and
waste water diverted to a protected area such os a sediment trop, basin, or orea protected
by cair logs.
6. Geotextile (abric undedlner May be used under wet conditions or with soils with o high
seasonal water table to provide greater bearing strength.
Installation:
1. Avoid locating an steep slopes or at curves in public roads.
2 Remave oll vegelation and olher a6jectionable moteriol from lhe foundalion area Grade and
crown (or positive droinage.
3. If slope towards the road exceeds 2%, construct a 6-8 in. high water bar (ridge) with 3:1
side slapes across the drive area a6oul 15 (l. from the entrance ta d'rvert mnof( away from
the road into protected sediment basins.
4. Install pipe undu the dnve i( needed to mainlain proper public road drainage.
5. Ploce geo�extile fobric on the ground foundalion prior ta stone plocement to improve stability.
6. Place stone lo dimensions and grade shown in the erosion and sedimenl control plan, leaving
the surface smooth and sloped far droinage.
7. �ivert all surface mnoff and drainage from the stone drive to a sedimenl trap or basin.
Maintenonce:
1. Inspect entronce drive antl sediment disposal orea weekly and after �° storm evenls or heavy
use.
Z Reshape drive as needed for drainage and runoff control.
3. Tap dress with clean stone as needed.
4. Immedialely remove mud and sediment Uacked or washed onto pubfic roads by brushing or
RELEA5E0 FOR CONSTRIICTI�N °°�Y be used if the water is conveyed into a sediment trap or
rvement immediotely.
Su6jec��o compliance with allregula�ions
of S�a�e antl Local Codes
City of Carmel
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DATE: 06�� 7�20
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Riprap
Requirements:
1. Rock: Hord, angulor, ond weather-resistant, having o specific grovity o( at least
2.5. Gradation: Well-graded stane, 507> (by weight) larger than the specified d50,
and no more than 159 of the pieces (by weighQ should be less than 3 la Filtec
Use geotextile fabric far stobilimtion ond (iltrotioa Slope: 21 ar Hatter, unless
approved in the erosion and sediment conlrol plon. Minimum Thickness: lhree times
the specified d50 slone diameler.
Installalion:
Subgrade Prepamlion:
1. Remove brush, trees, stumps, and other debris.
2 Excamte only deep enough for both filler and riprap; over-excavalion Increases lhe
omount of spoil considerably.
3. Campact any fill malerial to lhe density of the surrounding undistur6ed sail.
4. Cut a keyway in stable moteriol at the base of the slope to reinforce the toe;
keyway depth should be 1-1�2 times the design thickness of the riprap and should
exlend a horimntal distance equal lo the design thickness.
5. Smwth the graded foundation.
Filter Plocement:
1. Ploce geotextile fobnc on the smoothed foundation, ovedap the edges at least 12
in., and secure with anchor pins spaced every 3 fl. along the overlap.
Ripmp Placemenl:
1. Immediately afler installing the filter, add the riprap ta full thickness in one
operation. (Do not dump through chutes ar use any melhod lhat causes
segregafion of rock sizes or thot will dlslodge or damoge the undedying filter
material.)
2 If fabric is damaged, remove the riprap and repair by adding anolher layer of
fobric, ovedopping the damaged area by 12 in.
3. Place smaller rack in voids to form a dense, uniform, well-graded mass. (Selective
loading at lhe quarry and some hand placement may be needed to ensure an even
distributlon of rock material.
4. Blend the rock surface smoothly with the surrounding area to eliminate protrusions
or overfolls.
Mointenonce:
1. Inspect periodically for disploced rock moterial, slumping, ond erosion ot edges,
especially downstream or downslope. (Propetly designed and installed riprap usually
requires very little maintenance If promptly repaired.)
9. General canstruction sequence:
PRE-CONSTRUCTION ACTIVITIES
L Earthmovin aclivifies ma not be in until after Items 2-4 have been com leled.
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2. Inslall temporory stone occess drive off of Porking Lot.
J. Conslmcl sla in area near constmction entrance. Also conslmct Rule 5 informalion
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posfing box, install trash dumpster, and place port-o-let as shown on L803.
4. Inslall silt fencing os shown on sheet C803.
5. Strip topsoil ar organic matter hom Constmc�ion area and store in location intlimted
on sheet C301. Keep topsoil piles separate from subgrade stockpiles so it may be spread
on top of subgrade after moss earthwork is complete.
6. For bidtling puryoses, Con�rmtor shall assume that addi�ional tapsoil will no� be
hauled in for lhis project.
7. If work on site will stop for ten days or more ofter complelion of moss groding,
install temporary seed as indicated on charts bcated on Sheet C803.
8. Maintain all inlet protection, sediment traps, and silt fencing in ihis project hy
cleaning oul every week ond after every etorm event.
10. Location of proposed soil slockpiles, borrow, and /or disposal areas: See sheet
C301-C302.
11. Temporary and Permanent surface stablllmtion methods appropriate for each
season: See details on sheet C803-C804 for swface stabilimtion methods, soil
amendments and seed mixture lables.
12 Erosion and sediment control specificalions for individual building lots: None
13. Material handling, storage, and spill prevenlion plan
Puroose;
The intention of thls Spill Prevention, Control and Countermeasures
(SPCC) is to establish ihe procedures and equipment reqdired to
prevent the discharge of oil and hamrdous substances in quanlities
that violate applicable water quality standards, cause a sheen upon
or discolorotion o( the surfoce of navigoble walers or adjoining
sharelines, ar cause sludge or emulsion to be deposited beneath the
surfoce of the water or adjoining shorelines. The Plan also
establishes the acfrvifies required to mitigate such discharges (i.e.,
cauntermeasures) shauld they ocar.
Definitions:
Pollutant: means pollutant o( any kind or in ony form, including but
not limited to sediment, paint, cleoning ogents, concrete washout,
pesticides, nutrlents, lrash, hydraulic fluids, fuel, oil, petroleum, fuel
oil, sludge, oil refuse, and oil mixed with wastes other than dredged
soil.
Discharae:
Includes but is not limited to, any spilling, leaking, pumping, pouring,
emitting, emptying, or dumping.
Novioable Waters:
�leans all woters of the United States thot are connected with o
navigable stream, lake, or sea. [Note: This deflnilion is usually
interpreled to mean ony storm water (even normally dry wosh or
storm sewer) thal eventually drains inlo a navigable sheam].
Plan Review and Amendements:
This Plan shall be reviewed and�ar amended, if necessmy, whenever
there Is a change 'm the design of the site, construction, operation,
or maintenance which materially affects lhe site's potential for lhe
discharge of regulated material.
Predlction of Potential So'I�
1. Nearest Navigable Watec White River
2. Droinage System: AIl drainage hom the parking lol, restroom bldg.
and dog mns leaves lhe site via a vegetalive swale the Oows to
Carmel Creek. The remaining areas dwin direc�ly to Carmel Creek.
3. Passible Spill Saurces: Vehicular saurces such as
leaking (uel or oil, brake (luid, grease, antifreeze; construction
trash and debris, biological agents found in trash and debris,
fertilizers, household items induding
but not Ilmited to cleaning agents, chemicals, painL herblcides and
pesficides.
4. Groundwater Cantamination:There will be NO above ground or under
ground storage tanks or facilities at this site. The focility will not
use domestic waler or sanitary services.
Alert Pracedures for Soills:
t Any personnel observing a spill will immediately initiate the (ollawing
procedure:
a.) Dialing '"0° from any lelephone.
b.) Notify the appropriale emergency persannel.
2. The Emergency Coordinator will then toke the following octions:
a.) Barricade lhe area allowing na vehicles ta entu or leave the spill
Zone.
b.) Notify lhe Indiana Deparlment of Environmental Managemenl, Office
of Emergency Response by calling the appropriole telephone number
Offlce 317-233-7745
Toll Free 800-233-7745
Also the Nalional Response Center at B00-424-8802 and provide the
fallowing informalion:
- Time af abserwtion of the spill
- Location of the spill
- Identity of materiol spilled
- Probable source of the spill
- Probable time of the spill
- Volume of the spill and duration
- Present and anticipated mavement of the spill
- Weather condilions
- Personnel at lhe scene
- Aclion init�mled by personnel
c) Nolify the Fire �epartmenl Phone: 9-1-1
d.) Notlfy the Police Deparfment Phone: 9-1-1
e.) Nolify wasle recovery contractor, maintenance personnel or other
conUactual personnel as necessary for deanup.
f.) Coordinate and monitor cleanup unlil the siWation has 6een
stabilized and all spills hove been ellminoted.
g.) Cooperate wilh the IDEM-OER on procedures and reports invalved
wilh lhe evenl.
Cleanuo Parometers:
1. The Developer/Contractar shall be continually kept infarmed and maintain
lists o( qualified controctors and available Vac-trucks, tank pumpers
and other equipment readily accessible far dean-up operations. In
additlon, a continually updaled list o( available absorbent materials and
dean-up supplies should be kept on site.
2 AIl mainlenance personnel will be made aware of techniques for
preventlon of spills. They will be informed of the requiremenls and
procedures ouHlned in this plan. They will be kept abreasl of arrenl
developmenls or new in(armation on lhe prevention of spills and�or
necessar olterotions lo this lon.
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3. When s ills occur which could endan er human life and this becomes
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primary concem, the dischorge of the life saving protection (unction will
be carried out by the local police and fire departments.
4. Absorbent materials, which are used in deaning up spilled materiols, will
be dlsposed of in a manner subject to the approval of the Indiana
Department of Environmenlal Management.
5. Flushinq of spilled material with water will nat be permitted unless so
authorized by the Indiana Departmenl of Environmentol Monogemwt.
14. Contact information for the trained intlividual responsible for stormwater pollulion
preventian for the projecl site.
a. Name: Allison Barbn, CISEC
b. Address: Schneider Geomatics
8901 Otis Ave. Suite 100
Indianapolis, IN 46216
a Telephone Number: 317-864-8308
d. Email: abarton(s�schneidergeomatics.com
e. List of qualifications: licensed environment permit coordinator and SWPP
inspector.
15. Current revision date on all sheets: This has been noted.
SNPPP for Post-Constructian
1. Description of potentiol pollutant sources associoted with the
proposed lond use include:
Sill and sediment from exposed soils, leaves, mulch,
vehlcular sources such as leaking (uel or oil, brake Ouid,
brake dust, trash, debris, biological agents found in trash,
fertilizers, herbicides, pesticides, acid rain, Ilme dust and
concrete washoul.
2. Posl-constmclion stormwater qualily measures:
a Lacalion: See sheet C302 for lomtions.
b. Dimensions: See sheet C302 for dimensions.
a Sizing calcNations: See project's Droinoge Report.
d. Detailed specifimtlons: See this sheet.
e. Canstmctian delails: See sheel C803-C804 for delails.
3. Sequence describing stormwater quality measure
implementation:
a. Repair or reploce sil� fence installed during mass earthwork phase,
b. Repair wnstmction entrance installed in mass gmding phase.
c. Install or repair concrete washout basin os indicated on plons.
d. Repair Cons�mclion Staging area originally set up during mass groding.
e. Install lime In pavement sub-grades if required.
f. Install storm sewer system dnd protect all Inlets as indicaled on Sheets
C301-C302.
g. Complete and/or repair ear�hwork and sub-gmde compac�ion for pwement
sub-grades and ins�all pavement sub-base material.
h. Install level spreaders far gmss filter strips. As soon as gravel strips are installed
at level spreader, inslall silt fence on upslream side of gmve slrip to prevent
constmction sedimen� Gom setUing in gmvel strip.
' Inslall all remaining site (eatures.
j. Camplete earthwork and tinish gmding for seeded areas. Apply seed and mulch
wi�hin 30 hours o! seedbed prepamtion. Install erosion contml blanket as indicated
on the plans.
k. S�abilizatian af a pmject site is considered achieved when oll land dislurbing
octivities have been completed and a unitorm perennial vegetative cover with a
densi�y af seventy percent (70%) has bew estabfished on all unpaved areas and
oreos not covered by permanent stmctures, or equivalent permanent stabilization
measures have been employed.
I. ihe contractor shall maintain emsion control measures and dedces tluring
constmction and wCtl siltation of the streets will not longer ocac
m. A(ter contraclor has removed tempomry eroslon conUol measures any distur6ed
areas shall be re-seeded as required.
4. Stormwater quality measures to be implemented to prevent ar
minimize adverse impacts to sUeam and riparian habitats.
a. S�able cons�mdion entmnce. See Plan Shee� C301-C302 for lowlion and Sheet C803 for conslmdion entmnce details
and specificatians.
b. Sediment wn�ml measures for sheet flow areas: Sil� Fencing. See Plun Sheet C301-C302 for loca�ions ot sedimen�
control measures from sheet Ilow and Sheel C803-C604 for construction delails and specifsalions.
a Sedimenl control measures !ar wncenimted Oaw oreas: Erasion Conlral blanket anA coir flber logs. See Plan Sheel
C301-C302 !or IowCions and sheet C803-C804 !or conslmclion details and specificoPions.
d. Storm sewer inlet protection measures, lowlions and speci(ications: See Plan Sheel C301-C302 for lowtions of inlet
protecPion measures an0 Sheet C803 - C804 constmc�ion Oetails an0 specifiwCions.
e LomHon, dlmenslons, spedflca�ons and mns�mcHon detalle o� eoch storm water quallty measure: Sae Plan shee�
C301-C302 and sheels C803-C804 for mnstruc�ion delails and specificalions.
f. iempomry sudace slabilimlion methods appropriale for each seasan: See Plan Shee� C301-C302 and C803-C804 for
lempomry sur(ace stabilizolion guidelines and specificotions.
g. Permanenl surface stabilization specifcalions�. See Plan sheel C301-C302 for locations of permanent surface slabiliza�ion
measures and sheet C803-C804 (or details and sDe�ifications.
5. An operation and maintenance manual for all past-wnstmctian slormwaler quality measures:
a. The owner shall be responsihle (ar the inspecfion and maintenance of inlet castings, storm sewer
stmctures, flow lines, vegetation, walks, pavement, dry detention areq emergency spillwag outlet
control stmcture, and infiltratian trenches.
See accompanying 0&M Manual for (ull details o( owner's responsibilities�requirements regarding
maintenance of post-mnstmc5an BMP's.
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No. -
LA20700037
STATE OF
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Schneider
(i�fOMATICS
a division of
rne s�n�eree� como�ot�o�
Historic Fort Harrison
8901 Otis Avenue
Indianapolis, IN 46216-1037
Tel eph on e: 317826 J100
ww w. sch n eid ercorp. com
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STORMWATER POLLUTION
PREVENTION SPECIFICATIONS
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