HomeMy WebLinkAboutC30410 9abcd 8 7 6efgh109876 REVISIONS AND ISSUES5 4 3 2 1 PREPARED FOR:PROJECT NO.
SHEET NO.abcd5 4 3 2
CHECKED BY:DRAWN BY:DESIGNED BY:DWG NAME:PROJECT NO.:DATEBYeDATE:1
ENGINEERS317 | 846 - 6611800 | 452 - 6408317 | 843 - 0546 faxWEIHELand Surveying | Civil EngineeringLandscape ArchitectureALLAN H. WEIHE, P.E., L.S. - FOUNDER10505 N. College AvenueIndianapolis, Indiana 46280weihe.netfhAPPROVAL PENDING NOT FORCONSTRUCTIONKnow what's below.
before you dig.Call
R gSection 1, Township 17 North, Range 3 East, Clay Township, Hamilton County, IndianaW200365CLAY TOWNSHIP/CARMEL-CLAY BOARD OF PARKS AND RECREATIONAQW20036508/31/2020MKMKRIVER HERITAGE PARK PHASE IIMPROVEMENTSREVISIONS PER CITY COMMENTS06/28/20211AQC304SWPPP SPECSSWPPP for Construction Sites:
1.14 Digit Watershed Hydrologic Unit Code: 05120201090020
2.Name of all receiving waters: White River
3.Estimate of peak discharge for post construction conditions (10 year): N/A cfs
4.Locations of specific points where stormwater discharge will leave the site: Stormwater
discharge will be to the South of the site into an swale.
5.Locations where stormwater may be directly discharged into groundwater, such as
abandoned wells or sinkholes: None on site.
6.Soils Map of the predominant soil types: See sheet C305 for soils map and legend.
7.Description of potential pollutant sources associated with the construction activities:
Excavation pits can be potential sources of discharge into groundwater. There is a potential
for discharges into ground water from sediment resulting from exposed soils, leaves,
mulch, and vehicular sources if a significant rain event occurs while excavations are open.
The closest water well to this project is .1 mile away.
8.Temporary and permanent stormwater quality measures.
a.Location as shown on sheets C300 through C303.
b.Dimensions as shown on sheets C300 through C303.
c.Detailed Specifications as described on this sheet.
d.Construction details: see sheets C800-C803 for details.
e.Monitoring and maintenance guidelines: Owner and representatives shall perform routine
monitoring as required or after rain events.
Coir Fiber Log Check Dams
Requirements:
1.Material: As specified on plans or approved equal.
2.Anchoring: Use 2" x 2" woods stakes with pre-installed groove to anchor rope binding.
3.Rope binding shall be per manufacturer's recommendations.
Installation:
1.Grade the site as specified in the construction plans.
2.Add topsoil where appropriate.
3.Cut in groove to receive coir fiber log.
4.Place log in groove with bottom set a minimum of 4 inches below finish grade.
5.Make sure log length is enough that both ends of log extend up slope to a point above
normal flow elevation.
6.Install anchor stakes a maximum of 4 ft. on center on both sides of log.
7.Install rope lashing from stake to stake per manufacturer's recommendations.
8.Prepare the seedbed, fertilize (and lime, if needed), and seed the area immediately after
grading.
Maintenance:
1.During vegetative establishment, inspect weekly and after significant storm events of 0.5" or
more.
2.Inspect periodically for deterioration or damage from construction activities and repair
immediately.
3.After the contributing drainage area has been stabilized, remove all straw bales and
sediment deposits, bring the disturbed area to grade and stabilize it.
Silt Fence (Sediment Fence)
Requirements:
Drainage area: Limited watershed area to 1/4 acre per 100 ft. of fence; further restricted by
slope steepness
Location: Fence nearly level, approximately following the land contour, 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 to bury lower portion of support wire and/or fence fabric.
2.Support posts: 1 1/4" x 1 1/4". hardwood posts (if used) or steel fence posts set at least 1 ft.
deep. (Steel posts should have projections for fastening fabric.)
3.Spacing of posts: 8 ft. maximum if fence supported by wire, 6 ft. for extra-strength fabric
without wire backing.
4.Fence height: High enough so depth of impounded water does not exceed 1 1/2 ft. at any
point along fence line. 18" min. height.
5.Support wire (optional): 14 gauge, 6-in. mesh wire fence (needed if using
standard-strength fabric).
6.Fence fabric: Non-woven geotextile fabric with specified filtering efficiency and tensile
strength and containing UV inhibitors and stabilizers to ensure 6-mo. Minimum life at
temperatures 0- 120°F.
Maintenance:
1.1. Trained inspector to examine the silt fence weekly and after each 1
2" storm event.
2.2. If fence fabric tears, starts to decompose, or in any way becomes ineffective, replace the
affected portion immediately.
3.3. Remove deposited sediment when it reaches half the height of the fence at its lowest
point or is causing the fabric to bulge.
4.4. Take care to avoid undermining the fence during clean out.
5.5. After the contributing drainage area has been stabilized, remove the fence and sediment
deposits, bring the disturbed area to grade, and stabilize.
Temporary Construction Entrance/Exit Pad
Requirements:
1.The construction entrance shall be located off of the existing parking lot as shown on the
plans. If muddy conditions result in tracking on Road, clean up immediately and add "wheel
wash area."
2.Material for Gravel Construction entrance and/or Wheel Wash Area: 2-3 in. washed stone
(INDOT CA No. 2) over a stable foundation. Thickness: 8 in. minimum
3.Width: 30 ft. minimum or full width of entrance/exit roadway, whichever is greater.
4.Length: 150 ft. or as the site will accommodate minimum. The length can be shorter for
small sites.
5.Washing Facility: Level area with 3 in. washed stone minimum or a commercial rack, and
waste water diverted to a protected area such as a sediment trap, basin, or area protected by
coir logs.
6.Geotextile fabric underliner: May be used under wet conditions or with soils with a high
seasonal water table to provide greater bearing strength.
Installation:
1. Avoid locating on steep slopes or at curves in public roads.
2. Remove all vegetation and other objectionable material from the foundation area. Grade and
crown for positive drainage.
3. If slope towards the road exceeds 2%, construct a 6-8 in. high water bar (ridge) with 3:1
side slopes across the drive area about 15 ft. from the entrance to divert runoff away from
the road into protected sediment basins.
4. Install pipe under the drive if needed to maintain proper public road drainage.
5. Place geotextile fabric on the ground foundation prior to stone placement to improve
stability.
6. Place stone to dimensions and grade shown in the erosion and sediment control plan,
leaving the surface smooth and sloped for drainage.
7. Divert all surface runoff and drainage from the stone drive to a sediment trap or basin.
Maintenance:
1. Inspect entrance drive and sediment disposal area weekly and after 1
2" storm events or
heavy use.
2. Reshape drive as needed for drainage and runoff control.
3. Top dress with clean stone as needed.
4. Immediately remove mud and sediment tracked or washed onto public roads by brushing or
sweeping. Flushing should only be used if the water is conveyed into a sediment trap or
basin.
5. Repair any broken road pavement immediately.
Round Cobble Riprap
Requirements:
1.Rock: Hard, angular, and weather-resistant, having a specific gravity of at least 2.5.
Gradation: Well-graded stone, 50% (by weight) larger than the specified d50, and no more
than 15% of the pieces (by weight) should be less than 3 in. Filter: Use geotextile fabric for
stabilization and filtration. Slope: 2:1 or flatter, unless approved in the erosion and sediment
control plan. Minimum Thickness: three times the specified d50 stone diameter.
Installation:
Subgrade Preparation:
1. Remove brush, trees, stumps, and other debris.
2. Excavate only deep enough for both filter and riprap; over-excavation increases the amount
of spoil considerably.
3. Compact any fill material to the density of the surrounding undisturbed soil.
4. Cut a keyway in stable material 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 extend a horizontal
distance equal to the design thickness.
5. Smooth the graded foundation.
Filter Placement:
1. Place geotextile fabric on the smoothed foundation, overlap the edges at least 12 in., and
secure with anchor pins spaced every 3 ft. along the overlap.
Riprap Placement:
1. Immediately after installing the filter, add the riprap to full thickness in one operation. (Do
not dump through chutes or use any method that causes segregation of rock sizes or that will
dislodge or damage the underlying filter material.)
2. If fabric is damaged, remove the riprap and repair by adding another layer of fabric,
overlapping the damaged area by 12 in.
3. Place smaller rock in voids to form a dense, uniform, well-graded mass. (Selective loading
at the quarry and some hand placement may be needed to ensure an even distribution of
rock material.
4. Blend the rock surface smoothly with the surrounding area to eliminate protrusions or
overfalls.
Maintenance:
1. Inspect periodically for displaced rock material, slumping, and erosion at edges, especially
downstream or downslope. (Properly designed and installed riprap usually requires very
little maintenance if promptly repaired.)
Pre-Construction Activities
1.Earthmoving activities may not begin until after items 2-4 have been completed.
2.Install temporary stone access drive off of Parking Lot.
3.Construct staging area near construction entrance. Also construct Rule 5 information
posting box, install trash dumpster, and place port-o-let as shown on C300.
4.Install silt fencing as shown on sheet C300-C301.
5.Strip topsoil or organic matter from Construction area and store in location indicated on
sheet C300. Keep topsoil piles separate from subgrade stockpiles so it may be spread on top
of subgrade after mass earthwork is complete.
6.For bidding purposes, Contractor shall assume that additional topsoil will not be hauled in
for this project.
7.If work on site will stop for ten days or more after completion of mass grading, install
temporary seed as indicated on charts located on Sheet C302.
8.Maintain all inlet protection, sediment traps, and silt fencing in this project by cleaning out
every week and after every storm event.
9.Location of proposed soil stockpiles, borrow, and /or disposal areas: See sheet C301-C302.
10.Temporary and Permanent surface stabilization methods appropriate for each season: See
details on sheet C305 and C800-C803 for surface stabilization methods, soil amendments
and seed mixture tables.
11.Erosion and sediment control specifications for individual building lots: None
12.Material handling, storage, and spill prevention plan
14.Contact information for the trained individual responsible for stormwater pollution
prevention for the project site.
a.Name: WEIHE ENGINEERS c/o Fred Parker, CPESC
b.Address: 10505 N. College Ave. Indianapolis, IN 46280
c.Telephone Number: 317-846-6611
d.Email: parkerf@weihe.net
e.List of qualifications: licensed environment permit coordinator and SWPP inspector.
15.Current revision date on all sheets: This has been noted.
Purpose:
The intention of this Spill Prevention, Control and Countermeasures (SPCC) is to
establish the procedures and equipment required to prevent the discharge of oil and
hazardous substances in quantities that violate applicable water quality standards,
cause a sheen upon or discoloration of the surface of navigable waters or adjoining
shorelines, or cause sludge or emulsion to be deposited beneath the surface of the
water or adjoining shorelines. The Plan also establishes the activities required to
mitigate such discharges (i.e., countermeasures) should they occur.
Definitions:
Pollutant: means pollutant of any kind or in any form, including but not limited to
sediment, paint, cleaning agents, concrete washout, pesticides, nutrients, trash,
hydraulic fluids, fuel, oil, petroleum, fuel oil, sludge, oil refuse, and oil mixed with
wastes other than dredged soil.
Discharge:
Includes but is not limited to, any spilling, leaking, pumping, pouring, emitting,
emptying, or dumping.
Navigable Waters:
Means all waters of the United States that are connected with a navigable stream,
lake, or sea. [Note: This definition is usually interpreted to mean any storm water
(even normally dry wash or storm sewer) that eventually drains into a navigable
stream].
Plan Review and Amendements:
This Plan shall be reviewed and/or amended, if necessary, whenever there is a
change in the design of the site, construction, operation, or maintenance which
materially affects the site's potential for the discharge of regulated material.
Prediction of Potential Spills:
1.Nearest Navigable Water: White River
2.Drainage System: All drainage from the developed areas flows south to an existing
swale, and toward the Wite River.
3.Possible Spill Sources: Vehicular sources such as
leaking fuel or oil, brake fluid, grease, antifreeze; construction trash and debris,
biological agents found in trash and debris, fertilizers, household items including
but not limited to cleaning agents, chemicals, paint, herbicides and pesticides.
4.Groundwater Contamination:There will be NO above ground or under ground
storage tanks or facilities at this site. The facility will not use domestic water or
sanitary services.
Alert Procedures for Spills:
1. Any personnel observing a spill will immediately initiate the following procedure:
a.) Dialing "0" from any telephone.
b.) Notify the appropriate emergency personnel.
2. The Emergency Coordinator will then take the following actions:
a.) Barricade the area allowing no vehicles to enter or leave the spill zone.
b.) Notify the Indiana Department of Environmental Management, Office of
Emergency Response by calling the appropriate telephone number:
Office: 317-233-7745
Toll Free: 800-233-7745
Also the National Response Center at 800-424-8802 and provide the following
information:
- Time of observation of the spill
- Location of the spill
- Identity of material spilled
- Probable source of the spill
- Probable time of the spill
- Volume of the spill and duration
- Present and anticipated movement of the spill
- Weather conditions
- Personnel at the scene
- Action initiated by personnel
c.) Notify the Fire Department Phone: 9-1-1
d.) Notify the Police Department Phone: 9-1-1
e.) Notify waste recovery contractor, maintenance personnel or other contractual
personnel as necessary for cleanup.
f.) Coordinate and monitor cleanup until the situation has been stabilized and all
spills have been eliminated.
g.) Cooperate with the IDEM-OER on procedures and reports involved with the
event.
Cleanup Parameters:
1. The Developer/Contractor shall be continually kept informed and maintain lists of
qualified contractors and available Vac-trucks, tank pumpers and other equipment
readily accessible for clean-up operations. In addition, a continually updated list
of available absorbent materials and clean-up supplies should be kept on site.
2. All maintenance personnel will be made aware of techniques for prevention of
spills. They will be informed of the requirements and procedures outlined in this
plan. They will be kept abreast of current developments or new information on the
prevention of spills and/or necessary alterations to this plan.
3. When spills occur which could endanger human life and this becomes primary
concern, the discharge of the life saving protection function will be carried out by
the local police and fire departments.
4. Absorbent materials, which are used in cleaning up spilled materials, will be
disposed of in a manner subject to the approval of the Indiana Department of
Environmental Management.
5. Flushing of spilled material with water will not be permitted unless so authorized
by the Indiana Department of Environmental Management.
SWPPP for Post-Construction
1.Description of potential pollutant sources associated with the proposed land use include:
Silt and sediment from exposed soils, leaves, mulch, vehicular sources such as leaking fuel
or oil, brake fluid, brake dust, trash, debris, biological agents found in trash, fertilizers,
herbicides, pesticides, acid rain, lime dust and concrete washout.
2.Post-construction stormwater quality measures:
·Type: Pervious pavement system and native plantings all over site
·Location: See sheet C302-C303 for locations.
·Dimensions: See sheet C302-C303 for dimensions.
·Sizing calculations: See project's Drainage Report.
·Detailed specifications: See this detail sheets.
·Construction details: See sheet C800-C803 for details.
3.Sequence describing stormwater quality measure implementation:
a.Repair or replace silt fence installed during mass earthwork phase.
b.Repair construction entrance installed in mass grading phase.
c.Install or repair concrete washout basin as indicated on plans.
d.Repair Construction Staging area originally set up during mass grading.
e.Install lime in pavement sub-grades if required.
f.Install storm sewer system and protect all inlets as indicated on Sheets C300 and
C300.
g.Complete and/or repair earthwork and sub-grade compaction for pavement
sub-grades and install pavement sub-base material.
h.Install all remaining site features.
i.Complete earthwork and finish grading for seeded areas. Apply seed and mulch
within 30 hours of seedbed preparation. Install erosion control blanket as indicated
on the plans.
j.Stabilization of a project site is considered achieved when all land disturbing
activities have been completed and a uniform perennial vegetative cover with a
density of seventy percent (70%) has been established on all unpaved areas and
areas not covered by permanent structures, or equivalent permanent stabilization
measures have been employed.
k.The contractor shall maintain erosion control measures and devices during
construction and until siltation of the streets will not longer occur.
l.After contractor has removed temporary erosion control measures any disturbed
areas shall be re-seeded as required.
4.Stormwater quality measures to be implemented to prevent or minimize adverse impacts to
stream and riparian habitats.
a.Stable construction entrance. See Plan Sheet C300-C301 for location and Sheet
C305-C306 for construction entrance details and specifications.
b.Sediment control measures for sheet flow areas: Silt Fencing. See Plan Sheet
C300-C301 for locations of sediment control measures from sheet flow and Sheet
C305-C306 for construction details and specifications.
c. Sediment control measures for concentrated flow areas: Erosion Control blanket
and coir fiber logs. See Plan Sheet C300-C301 for locations and sheet C305-C306
for construction details and specifications.
d.Storm sewer inlet protection measures, locations and specifications: See Plan Sheet
C300-C301 for locations of inlet protection measures and Sheet C305-C306,
C800-C803 construction details and specifications.
e.Location, dimensions, specifications and construction details of each storm water
quality measure: See Plan sheet C300-C301 and sheets Sheet C305-C306,
C800-C803 for construction details and specifications.
f.Temporary surface stabilization methods appropriate for each season: See Plan
Sheet C300-C301 and Sheet C305-C306, C800-C803 for temporary surface
stabilization guidelines and specifications.
g.Permanent surface stabilization specifications: See Plan sheet C302-C303 for
locations of permanent surface stabilization measures and Sheet C305-C306,
C800-C803 for details and specifications.
5. An operation and maintenance manual for all post-construction stormwater quality
measures:
a.The owner shall be responsible for the inspection and maintenance of inlet castings,
storm sewer structures, flow lines, vegetation, walks, pavement, dry detention area,
emergency spillway, outlet control structure, and infiltration trenches.
See accompanying O&M Manual for full details of owner's responsibilities/requirements
regarding maintenance of post-construction BMP's.
1