C-001

VICINITY MAP Scale: 1 "=2000'

INTERCEPTOR TRENCH CONCEPTUAL DESIGN

BENNETT'S DUMP BLOOMINGTON, INDIANA

Drawing Index: Cover Sheet C-001 Notes and Legend C-002 Site Plan - Interceptor Trench Layout C-003 Middle Spring Interceptor Trench C-004 Mid-North Interceptor Trench C-005 North Area Interceptor Trench C-006 Typical Interceptor Trench Elevation View C-007 Pump Vault Details C-008 Building Foundation C-009 Miscellaneous Details C-010

LOCATION MAP Scale: 1 "=200'

Site Address: 2090 Hunter Valley Road Bloomington, Indiana 47404

Engineer: Jim Ekedahl, P.E.

Structural Engineer: Robert Mohlin, P .E.

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LEGEND:

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- 728 -

Existing Monitoring Well

Existing Piezometer Location

Springs

Submersible Pump Vault

Interceptor Trench Cleanout

Interceptor Trench Monitoring Point

Interceptor Trench

Filter Tubes

Utility Pole

Silt Fence

Conveyance Pipe

Spring Surface flow

Discharge Pipe

Proposed Chain-Link Fence

Existing Chain - Link Fence

Potentiometric Surface Contour -March 18, 2015

Notes : 1. Contractor is responsible to review all notes and specifications prior to

commencement of construction activities.

2. Contractor responsible for permits required from Federal, State, and local regulatory agencies. All permits shall be approved prior to construction activities.

3. The site is subject to inspection by United States Environmental Protection Agency (U .S. EPA), Indiana Department of Environmental Management (IDEM) , and local agencies. All work performed shall meet local, state, and federal regulations.

4. Contractor responsible for verifying field elevations prior to work commencement.

5.

6.

7.

8.

Two survey control points are located at the project site. Points are in the State Plane coordinate system, Indiana West NAO 83, US survey feet as follows:

BO-382 Description: MagNail Northing: 1436411.88 Easting: 3100847.59 Elevation: 744.56

BD-385 (See Sheet C-003) Description: Rebar Northing: 1436414.92 Easting: 3100682.59 Elevation: 740.06

Contractor responsible for verifying locations of underground utilities located within the project area .

Electrical service is not available at the site.

Excavated soils and rock from interceptor trench, utility trench, and foundation excavation areas shall be stockpiled nearby. Excavated topsoil (0- to 6-inch depth) shall be segregated from other overburden materials. Remaining (non-topsoil) overburden soils shall be segregated from weathered bedrock, to the extent practicable, in stockpiles of 120 cubic yards or less. See specification sections 02 60 00 - Contaminated Site Material Removal and 31 00 00 - Earthwork requirements for managing excavation spoils. Spoils with PCB concentrations of 50 ppm or greater shall be disposed of at the Heritage Environmental Services Landfill in Roachdale, IN.

Any existing wells or piezometers encountered in the trench locations shall be removed and associated construction materials disposed of off site in accordance with federal , state, and local regulations.

9. In the event that excavations need to be dewatered during construction, Contractor shall be responsible for pumping excavation water to mobile storage tanks to be provided by the owner.

10. A pilot interceptor trench currently exists at the location of the Mid-North interceptor trench. This pilot shall be removed and replaced with a new permanent interceptor trench. As-built information for the pilot interceptor trench is provided in Appendix G of the Design Report for Bennett's Dump OU-2.

11 . A metal V-notch weir currently exists at the location of the Middle Spring interceptor trench. This weir shall be removed and stored for future use.

12. Contractor shall restore trench excavation areas to match existing adjacent grade.

References: 1. Base map provided by CBS Corporation via electronic mail from Mr. Ray Taylor

dated January 19, 2016.

2. Potentiometric surface contours provided by PSARA Technologies, Inc. via electronic mail from Mr. Patrick Kneip, P.E . dated June 10, 2016.

Seeding and Mulching Information: 1. Any disturbed area on which activity has ceased and which will remain exposed for

more than 45 days shall be seeded and mulched within 7 days of last activity. During non-germinating periods, mulch shall be applied at the recommended rates.

2. Until the site is stabilized, all erosion and sedimentation controls shall be maintained properly per Specification Section 31 25 00 - Erosion and Sedimentation Controls. Maintenance shall include inspections of all erosion and sedimentation controls after each storm event and on a weekly basis. All preventative and maintenance work, including clean out, repair, replacement, regrading, reseeding, remulching , and blanket replacement, shall be performed as soon as practical after identification of damage .

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730

Scale: 1"=10'

Middle Spring Interceptor Trench Elevation View

B1

715

733

725

720

730

715

733

725

720

PDI-1

PDI-2

730

Scale: 1"=10'

Middle Spring Interceptor Trench Elevation View

A2

715

733

725

PDI-1 PDI-3

725

730

Scale: 1"=10'

Middle Spring Interceptor Trench Elevation View

A1

720

715

733

720

730

715

733

725

TW-4

Notes:

1. The Middle Spring interceptor trench shall consist of three sections. The first will extend fromTW-4 (Northing: 1436288.89; Easting: 3100534.55) 25-feet to the southeast, parallel to the generalflow of Stout's Creek. The second leg will be perpendicular to the first leg and will extend in theflow direction of Middle Spring into the head of the spring. The third leg will turn 40-degrees to thenortheast from the first leg at the location of TW-4 and be 25-feet in length. The third leg of thetrench will terminate approximately 5-feet northwest of GP-11.

2. As a contingency for artesian conditions at the Middle Spring area that may otherwise causetemporary sump overflow, a buried drain will be installed through the concrete manhole section atelevation 730-feet and terminate approximately 60 feet west of the sump with an invert elevation729-feet. The drain pipe shall consist of 6-inch diameter, solid-wall HDPE.

3. All elevation data is based on the ground surface elevations at temporary well TW-4 andpre-design investigation borings PDI-1 through PDI-3, as well as geologic conditions encounteredat these locations. The bottom of the trench shall be placed directly on top of competent bedrockand shall slope toward the pump vault. In cases where bedrock does not slope toward the pumpvault location, rockwork may be required to create a minimum 0.5 percent slope, or the sumplocation may be modified at the direction of the Engineer.

4. Clay and gravel backfill elevations may need to be field adjusted to ensure the capture of MiddleSpring.

5. Refer to Drawings C-007 and C-008 for additional construction details.

C-004

728

Middle Spring Interceptor Trench

15.00' (approx.)

BC91$-Graphic Scale

O 5 10

, - • -ii ( in Feet )

Clay to Ground Surface

Weathered Bedrock Elev. 722.92•

Bedrock Elev. 719.22•

Bedrock

Tee Pipe Connection

MW-BC10 ~

Woven Geotextile Fabric Enveloping Gravel

6" Dia. Perforated Corrugated HOPE Pipe

Topsoil

Undisturbed Soil

Woven Geotextile Fabric Enveloping Gravel

Weathered Bedrock

6" Dia. Perforated Corrugated HOPE Pipe

~ -0-GP11 ~

Woven Geotextile Fabric Enveloping Gravel

Undisturbed Soil

Weathered Bedrock

Bedrock

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730

720

6" Dia. Perforated Corrugated HDPE Pipe

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Mid-North Interceptor Trench Elevation View

C1

720

730

715

733

725

720

730

715

733

725

710 710

C-005

Notes:

1. The Mid-North Interceptor Trench shall be a 20-foot longtrench parallel to the flow of Stout's Creek. The pump vaultshall be located on the south end of the trench. PDI-4(Northing: 1436404.19; Easting: 3100504.39) is located atthe south end of the sump. As shown on the Site Plan, thetrench will extend through piezometer TPZ-5 (Northing:1436416.341; Easting: 3100501.401).

2. All elevation data is based on the ground surface elevationsat temporary well TW-1, temporary piezometer TPZ-5,pre-design investigation boring PDI-4, and geologicconditions encountered at each of these locations. Thebottom of the trench shall be placed directly on top ofcompetent bedrock and shall slope toward the pump vault.In cases where bedrock does not slope toward the pumpvault location, rockwork may be required to create a gradualslope, or the sump location may be modified at the directionof the engineer.

3. Pump vault location shown is subject to change pendingresults of an additional boring near the southern terminus ofthe interceptor trench.

4. Refer to Drawings C-007 and C-008 for additionalconstruction details.

724

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Clay to Ground Surface

Grovel

Approximate Weathered Bedrock Elev. 721.5'

Approximate Bedrock Elev. 716.0'

Bedrock

Existing Mid-North Spring Flow

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Relocated Mid-North Spring Flow

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• • • • • • • • ..... . ..... . ...... . Graphic Scale

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Topsoil

Undisturbed Soil

• • 10 . -· • • ..

Woven Geotextile Fabric Enveloping Gravel

Weathered Bedrock

6" Dia. Perforated Corrugated HDPE Pipe

Woven Geotextile Fabric Enveloping Grovel

6" Dia. Perforated Corrugated HDPE Pipe

Bedrock

730

Undisturbed Soil

720

Weathered Bedrock

710

Mid-North Interce tor Trench Elevation View Scale: 1"=10'

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725

715

720

730

720

Scale: 1"=10'

North Interceptor Trench Elevation View

D1

733

715

725

733

Notes:

1. The North Area Interceptor Trench shall be 40-feet in length andextend through the locations of TW-2 (Northing: 1436481.06;Easting: 3100479.39) and TW-3 (Northing: 1436500.66; Easting:3100483.02). The pump vault shall be located on the south end ofthe trench.

2. All elevation data is based on the ground surface elevations attemporary wells TW-2 and TW-3, piezometer PZ-9, and geoprobeboring GP-25, as well as geologic conditions encountered at each ofthese locations. The bottom of the trench shall be placed directly ontop of competent bedrock and shall slope toward the pump vault. Incases where bedrock does not slope toward the pump vault location,rockwork may be required to create a gradual slope, or the sumplocation may be modified at the direction of the engineer.

3. Refer to Drawings C-007 and C-008 for additional constructiondetails.

C-006

• • • I • • •

• •

Clay ta Ground Surface

Gravel

Weathered Bedrock Elev. 720.34'

Bedrock Elev. 718.34'

Bedrock

4t::-

Topsoil

Undisturbed Soil

Woven Geotextile Fabric Enveloping Gravel

Weathered Bedrock

6" Dia. Perforated Corrugated HDPE Pipe

North Interceptor Trench

Graphic Scale 0 5 10 , ---ii

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North Interce tor Trench Elevation View

Woven Geotextile Fabric Enveloping Gravel

6" Dia. Perforated Corrugated HDPE Pipe

Scale: 1"=10'

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Typical Interceptor Trench Elevation View

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Notes:

1. Geological conditions including depths of weathered and competentbedrock are based upon subsurface evaluations at specific locations andtimes. Conditions may vary, including undulations of competent bedrock,requiring modifications during construction and shall be subject to approvalby Engineer. If nodules of bedrock exist within the trench locations,rockwork may be required to facilitate a minimum 0.5% slope of the pipetoward the pump vault.

2. Geotextile fabric shall be draped over the sides of the trench prior to backfilland shall completely encapsulate the gravel fill. Edges shall be overlappeda minimum of 1 foot.

3. Clay shall be placed in 1-foot loose lifts and compacted to 95% maximumdensity of the Standard Proctor. Backfill shall be excavation spoils that arefree of debris and rock over 2-inches maximum dimension and approved bythe Engineer. Compaction testing may be requested.

4. 6-inch diameter slotted corrugated plastic piping shall be installed in thetrench after placement of geotextile and prior to backfill. Pipe shall besingle wall corrugated pipe constructed of high-density polyethylene(HDPE). It shall conform to AASHTO M294 type C specifications.Perforated piping shall have 1.5 to 3.5 square inches of opening per foot.Sections of pipe shall be joined together with connectors of the samematerial.

5. Gravel fill shall be clean and between 0.5 and 1.5-inches in diameter. Theinitial gravel lift shall be evenly placed to 12 inches above the pipe prior toplacement of subsequent lifts.

6. Pipe trench shall be approximately 36-inches wide. Excavations at sumplocations will be at least 72-inches wide. If at any time an excavation needsto be wider than specified to facilitate work, Contractor shall obtainEngineer approval. Excavations over 4-feet below grade shall be sloped orstepped back or a trench box must be utilized to meet OSHA regulations.Install orange construction/safety fencing to limit access to openexcavations.

C-007

Cleanout 8" Dia. Protective Steel

Casing With Locking Lid

Solid End Cap

High Early Strength Concrete

Pad

Topsoil

6" Dia. Solid HOPE Corrugated Pipe

Undisturbed Earth

Top of Weathered Bedrock (Elevation

Varies)

Weathered Bedrock

Bedrock Transition (Elevation Varies )

Transition Coupling from Perforated

to Solid

Geotextile Fabric

24" x 36" Channel Frame, Pedestrian Rated, Spring Loaded Aluminum Hatch

Monitoring Point 8" Dia. Protective Steel

Casing With Locking Lid

2" Dia. SCH. 40 PVC Solid Riser

Fence

2" Dia. SCH. PVC Screen

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Area Light

48" I.D. Flat Top Type 1 Manhole With 24" x 36" Opening (Meets H-20 Loading)

48" I.D. Type 1 Pre-Cast Concrete Manhole Section (Meets H-20 Loading, Height Varies)

Undisturbed Earth

Woven Geotextile Fabric

Top of Weathered Bedrock (Elevation Varies)

Weathered Bedrock

Bedrock Transition (Elevation Varies) Pump Vault bottom Elevation 2' Below Top of Competent Bedrock (Elevation Varies)

Concrete

6" Dia. Solid HDPE Corrugated Pipe

6" Dia. Perforated HDPE Corrugated Pipe

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Interceptor

Trench

Middle Spring

Mid-North

North

El. Bottom of

Pump Vault

717.3

713.5

714.0

El. Top of

Pump Vault

732.3

729.5

729.0

El. Ground Surface

731.5

729.25

728.4

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48" I.D. Manhole Cover

Electrical Conduit From Treatment Building

6" Dia. Perforated Corrugated HDPE Pipe

Ground

Geotextile Fabric

i---------8' Excavation---------i

Submersible Pump Vault - Plan View Not to Scale

Discharge Pipe To Cistern

Undisturbed

2" Golva n ized Steel Guide Pipe (2 Per Pump)

Ball Check Valve

Submersible Pump

Weathered Bedrock

2'

Junction Box / Service Outlet

Electrical Conduit (Controls) From Treatment Building

Clay to Ground Surface

Discharge Pipe To Cistern

6' Below Surface

Fabric

Concrete

Transducer Level Monitor /Switch

Submersible Pum Vault Elevation View Not to Scale

24" x 36" Channel Frame, Pedestrian Rated, Spring Loaded

Aluminum Hatch

Clay to Ground Surface

6' (Typ.)

Gravel Grade

6" Dia. Perforated Corrugated HDPE Pipe

2'

Bedrock

6" Dia. Solid Corrugated HDPE Pipe

1' Min.

Electrical Conduit from Treatment Building

PVC Discharge Pipe

Undisturbed Soil

Pump Discharge

2" Galv. Steel Pipe Guide Pipe (2 Per pump)

Geotextile Fabric

Weathered Bedrock

Geotextile Fabric

Check Valve

Base Elbow Connection

Concrete

Submersible Pum Vault Elevation View Not to Scale

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Backwash Water Tank

Building Foundation / Plan View Notto Scale

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Treated Water Tank

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#6 Rebar O g• (Typ.)

10'-o" Raw Water Tank

Waterstop (Typ.)

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#6 Rebar O g• (Typ.)

Foundation/ Under round Tank Elevation View Not to Scale

Treated Water Tank

18"

Ground Surface

Clay Backfill

AASHTO No. 57 Aggregate

Top of Bedrock

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TOP lENSION WIRE (TYP.)

BOTTOM lENSION WIRE -7 (TYP.)

APPROXIW.TE EX/s:nNG GROUND SURFACE:

Q Double Swing Gate

NOMINAL 1 1/4" DIA. (MIN.) BRACE RAIL (1YP;J

3" NOMINAL 0.0. (MIN.)

LINE POST

8'-0" MAX.

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2' in.

1' in.

2" Dia, Sch.80 PIIC Dlecharge Pipe

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SECURE END OF EEL TOT-POST AS DIRECTED.

.llfm: j ~Fli~c:~~rws PROVIDE SCOUR PROTECTION 0 DOWNSLOPE SIDE OF N..L EEL CHECK DAMS.

6" INDOT 43 OOMSE AOORE~TE

Ml~ FIIPE: SPACING· 3 Between Pipe• 4 • From Trench Wall 12• Between Control and Power Condult11 12• Betwean Conduit and Conveyance Pipe

Graw! Bedclng (min. 4" below/6" above pipe)

2" Dia. PVC Conduit - Control

PIIC Conduit - 120V

PIIC Conduit - 20/H

DITCH WIDTH

.IQIE: APPLICABLE TO SMALL WIDTH DITCHES WITH TDTN.. WIDTH THAT REQUIRES ONLY ONE 10' SPAN,

EXTEND EELS AT SIDES OF DITCH TO PREVENT IM'ASSING.

,.

STABUZE I/IA MEl"N.. T-POSTS ON DOWNHILL SIDE AT THE CENTER, AT EACH END, AND AT ADDmONAL POINTS AS NEEDED (2' MAX. SPACING), OR AS DIRECTED BY THE ENGINEER.

.MllIEI

T-POST ON DOWNHLL SIDE AT THE CENTER, AT EACH END1 AND AT ADDmONN.. POINTS AS NEEDED TO STABLIZE B~ }i' D:::cr:~ING),

.l!lllIE: SLIGHTLY ANGIL£ STAKES WITH TOP FACING TOWARDS DIRECTION OF Fl.CM.

APPLICABLE TO SMALL WIDTH DITCHES WrTH TDTN.. WIDTH THAT REQUIRES ONLY ONE 10' EEL TO SPAN.

F SOIL BENEATH IS SOFT OR LOOSE, COMPACT BY HAND TAMPING OR OTHER APPROVED MEANS.

DITCH CHECKS SINGLE N.T.S. A-A DITCH CHECKS

N.T.S. 0 Filter Tubes

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Fence Post Details

El.£VA110N

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BOTTOM T~NSION t :; _:~ WIRE (TYP.) •· ·'. · ' 'io

9 GAUGE CHAIN LINK t · J "' FENCE FABRIC

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9 GAUGE CHAIN LINK FENCE FABRIC

(TYP.)

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~ J "' APPROXIW.TE EX/s:nNG ·.. ,. GROUND SURFACE:

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w (MIN.)

GENERAL NOTES:

1. CONTRACTOR MAY SUBMIT ALlERNAlE FENCE DESIGN FOR APPRO\/AL BY THE SITE MANAGER.

2. GAlE, CORNER, LINE AND PULL POSTS SHALL BE PLACED IN CONCRETE.

J. CONCRETE SHALL CONFORM TO NJDOT SPECIFICATIONS.

EXTEND FABRIC INTO EXCAVATED TRENCH

PETNL A ANCHORING SILT FENCE

REINFORCEMENT H

FABRIC

ctJrAWAY VIEW

o Silt Fence~=~

SPECIFIC NOTES:

1.

2.

J.

4.

5.

POST SHALL BE 2" X 2" WOOD STAKES PLACED A MAXIMUM OF 8.0' CENTER TO CENTER. GEOTEXTILE MATERIAL SHALL BE FASTENED SECURELY TO FENCE POSTS WITH WIRE TIES OR STAPLES. WHEN lWO SECTIONS OF GEOTEXTILE MATERIAL ADJOIN EACH OlHER, THE GEOTEXTILE SHALL BE WRAPPED AROUND THE lWO STAKES AND THE STAKES SHALL BE DRIVEN INTO THE GROUND AS ONE UNIT •

MAINTENANCE SHALL BE PERFORMED AS NEEDED AND MATERIAL REMOVED WHEN "BULGES" DEVELOP IN THE SILT FENCE.

INSPECTION SHALL BE WEEKLY AND AFTER EVERY STORM EVENT, REPAIR OR REPLACEMENT SHALL BE MADE WHEN ACCUMULATIONS REACH 1 /2 THE ABOVE GROUND HEIGHT OF SILT FENCING, OR AS REQUIRED BY THE SITE MANAGER.

S. SILT FENCING SHALL BE INSTALLED PARALLEL TO EXISTING CONTOURS OR CONSTRUCTED LEVEL ALIGNMENTS. ENDS OF FENCING MUST BE EXTENDED 8.0 FEET, TRAVELING UPSLOPE AT 45 DEGREES TO THE ALIGNMENT OF THE MAIN FENCING SECTION.

7. MAXIMUM DRAINAGE AREA />BOVE SILT FENCE SHALL BE LESS THAN ONE ACRE.

B. LENGTH OF SLOPE ABOVE SILT FENCE SHALL BE LESS THAN 150 FEET.

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