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TO STATE HIGHWAY NO. 3i5BOOK .149 PAGE 283

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1 Sill fence shall be constructed in 100' segments with 'J' hook ends. SeeDetail on this sheet.

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1 inch = 60 ft. LEGEND

— — Property Line

SF — Silt Fence

:.11ZO—-~" Existing Contours

WOZ^ Proposed Contours

Sediment Basin Perimeter

Limits of Construction

Fill Areas

Erosion Control Matting

NO ) SEDIMENT & EROSION CONTROL REFERENCE NOTESCONSTRUCT STONE CONSTRUCTION ENTRANCE

CE 1 Construct Stone Construction Entrance

INSTALL SILT FENCE 3,400 SF

SF 1 Silt Fence - Install in 100' Sections W J-Hook Ends

SF 2 Silt Fence - Install in 100' Sections W/ J-Hook Ends

SF3 Silt Fence

SF4 Silt Fence

SF5 Silt Fence

SF6 Silt Fence

INSTALL INLET PROTECTION

IP 1 Intel Protection

IP 2 Inlet Protection








INSTALL CONCRETE WASHOUT AREA

CW 1 Concrete Washout Area

INSTALL EROSION CONTROL MATTING- North American Green S150Approximately 16,500 SY

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EM 1 Install Erosion Control Blanket


Install Erosion Control Blanket

Install Erosion Control Blanket




INSTALL SHOREMAX EROSION CONTROL MATTING 900 SF

EC 1 Shoremax Transition Mat (North American Green) (15X15) Install PerManufacturer's Recommendations

CONSTRUCT TEMPORARY S1LT BASIN

SB 1 Construct Temporary Sill Basin "C". See Sheet 1 4

CONSTRUCT DIVERSION -1566 LF

2 Means of inlet protection shall be determined in the field by theconlractor and shall be compliant with the Omaha Regional StormwatsrDesign Manual. The inlet protection installed shall be sufficient inprotecting the inlet from receiving any sediment or debris fromconstruction activities.

3 Once inlel protection is removed all remaining sediment shall be cleanedaway from the inlet and disposed of properly.

Finished grade shall be sodded and landscaped upon completion ofconstruction activities. See landscape plan for more information.

Minimize land disturbance and construction operations to limit potentialfor erosion, sediment transport and deposition.

6 All SWPPP features shall be constructed per the Omaha Regional Stormyiatef Design «lanu@l an^l mqpufastureg recgmmgndalions^ ^ „

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CONSTRUCT TEMPORARY SEDIMENT TRAP - Per Omaha Regional-IffE! Stomwater Design Manual Section 9.5.14

,[0; ST 1 Sediment TrapE3CC

ST 2 Sediment Trap

ST 3 Sediment Trap

ST 4 Sediment Trap

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RUMOFF INTRODUCTED TO OUTLETEARTHEN

EMBANKMENT

ORIGINALGROUND ELEV

67 01 YD/ACRE

WETSTORAGE

67CUYD/ACRE(NORMALLY EXCWATED)

V:1;1 SLOPE

MINI'ABOVEt CREST MAX 10'

COARSEAGGREGATE FILTER

CLOTH

SEDIMENTCLEANOUT LEVEL A-A VIEW

NOTE; EARTHEN EMBANKMENTMUST BE SEEDED IMMEDIATELY

AFTER INSTALLATION vLENGTH (IN FECT)»

6 X DRAINAGE AREA (IN ACRES)

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TEMPORARY SEDIMENT TRAP NOTES1. All Temporary Sediment Traps shall be constructed in conformance with Section '9.5.14

Temporary Sediment Trap," of the Omaha regional Storm Water Design Manual (ORSDM),Current Edition.

2. Install a section of stilt fence in a semicircular pattern immediately downstream of theaggregate outlet.

3. Sediment traps identified for this project shall be constructed and removed in several phasesover the entirety of the project duration.

4. The limits of the temporary sediment traps identified on these plans are shown asrepresentation only. Horizontal dimensions may vaiy. Contractor shall submit shopdrawings of all temporary sediment traps and aggregate outlets to the engineer (E & AConsulting Group, Inc.) for review and approval. Refer to details shown on this sheet.

5. Temporary sediment traps should be constructed as a firsl step in any land disturbing activityand shall be functional before upslope land disturbance takes place. However, somesediment traps will be placed in areas of structural fill. Those sediment traps should beconstructed immediately after fill for the contributing area is brought to finished grade.

6. Side slopes of excavated areas (wet detention volumes) shall not be greater than 2:1horizontal to vertical. The maximum depth of excavation is 4 feet. Excavated soils shall beused for berm construction.

7. The aggregate outlet of the sediment trap embankment shall be located at the low point ofthe basin. Coarse aggregate shall be 0.75-inch to 1.5-inch clean angular rock. Rip rap shallbe type A. A nonwoven geotextile, Mirafi 160N or approved equal, shall be placed betweenthe soil-aggergate interface. The crest of the aggregate outlet shall be a minimum of onefoot below the embankment crest elevation. Install a section of stilt fence in a semicircularpattern immediately downstream of the aggregate outlet.

8. The Maximum height of the embankment is as described in the schedule, above, from thebase of the aggregate outlet. Side slopes of the embankment shall not be greater than 2:1.Top width of the embankment shall be as indicated in the schedule provided above. Theembankment shall be seeded with temporary vegetation immediately after each isconstructed.

9. Sediment traps shall be cleaned to original dimensions when sediment has accumulated toone half the design volume wet storage.

10. When upslope contribuling area has achieved stabilization, temporary sediment traps maybe removed. Stabilization shall require a minimum of 75% ground cover established bytemporary or permanent seeding or sodding. Restore sediment trap to its originaldimensions. Overexcavate sediment trap footprint two feet in depth and backfill as structuralfill to final grade or subgrade. Moisture conditioning of soils will likely be required.

PERSPECTIVE VIEW

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3.0

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1.0

1.5

2.0

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3.5

4.0

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2.5

3.0

3.0

4.0

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Figure 9-27 Minimum Top Width (W) Required for Sediment Trap Embankments According to Height ofEmbankment (Feet)

ledlment

Trapdentlfier

ContributingArea

(Acres)

Proposed Finished

GradeElevation

(at Berm Base)

Bottom of

Aggregate OutletElevation

TotalDetention

VolumeRequired

(CY)

Total

Detention

VolumeRequired

(cuft)

Wet

DetentionVolumeRequired

(CY)

Wet

DetentionVolume

Required

(cuft)

DryDetention

Volume

Required

(CY)

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LEGEND

Property Line

Silt Fence

Existing Contours

Proposed Contours

Sediment Basin Perimeter

REFERENCE NOTES

SILT BASIN "C"SCALE: 1 "=20'

De-watering Holes (See Table)

1 foot wide red paint stripeto show cleanout elevation-

Angle of stub to be shown.angle based on barrel grade ^./^"\

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Riser (See Table)

• Riser Crest Elevation (See Table, below)

• Wet Storage Pool Elevation (See Table)

• Clean Out Elevation (See Table)

RN 1 Construct Riser and Base (Per detail andSediment Basin Data Table below) andAnli-Vortex Device, (Sea Figure 9.5.16-12 perORSWDM). Cost of Riser, Barrel, ScourStop,and Anti-Vortex Device

RN 2 Construct Barrel Per the Detail and TableProvided on this Sheet

RN 3 Construct Flared End Section Outfall with 15'x 15' ScourStop Permanent TurfReinforcement. Install Per Manufacturer'sRecommendations

2-#8 (min.) bars placed at rightangles and projecting into sides

ofriser to anchorriserto concrete base.

Notes:1.

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Top of Berm Elevation (see table)

Highwater Elevation

Base =2xRiser Diameter

Anti-Vortex Device

See Riser and Base Detail

2.

Insure that the concrete fills the bottom of the riser to the invert of the outlet pipe to counterflotation forces and prevent the riser from breaking away from the base.If using aluminum or aluminized pipe risers, the embedded section shall be painted with zincchromate or approved equivalent.Position the boltom of the dewatering holes at the the 'Wet-Storage Pool Elevation* indicated inthe Sediment Basin Data Table. Do not exceed the number of dewaterlng holes indicated.

RISER AND BASE DETAILNOT TO SCALE

Emergency Spillway CrestElevation (see table)

^See Note 3

Lenglh (see table)

DepthBelow

ProposedFinished

Grade

(ft)

Area of

Trap

Bottom

(sqft)

Sediment Trap Dimensions

Bottom

Width,

(ft)

Excavated

Bottom

Length,

(ft)

Area of

Trap atProposed

FG

(sqft)

Excavated

TopWidth,

(ft)

Excavated

TopLength,

(ft)

Excavated

Volume

(cuft)

Embankment Dimensions

Length of

Rock V/eir

Embankment

Height

(ft)

Rock

OutletHeight

(ft)

TopWidth

(ft)

Bottom of BasinElevation (see table)

Notes:1. If spillway is constructed over fill, compact the embankment to a minimum of 90% of the Maximum Dry density within 3% below and 5%

above optimum moisture as determined by ASTM D1557 (Modified Proctor), or as recommended by the GEOTECHNICAL ENGINEER.Conduct a a minimum of one compaction test every vertical fool of compacted fill placed, every 50 feet of embankment length. Provide testreports to the ENGINEER for review and approval. No testing or special compaction is required if spillway is constructed in cut areas onnatural ground.

2. Riser and barrels shall be corrugated metal pipe. Reused pipes in good condition meeting the size requirements may be usedfollowing Approval by the ENGINEER. Reused Risers will be required to crest at the elevation indicated in the table below. Theconfiguration of orifice holes must also meet the requirements below - exceeding the number of orifice holes will not be permitted.

3. The Discharge Flow line of the Barrel shall be verified by the Field Engineer.

BASIN DETAILNOT TO SCALE

SEDIMENT BASIN DATA TABLE

BasinNo.

DrainageArea

(Ac.)

5.7

2-YearStormEvent

Discharge(cfs)

16.1

10-YearStorm EventEvent (cfs)

23.6

WetStorageProvided

(CY)

382

Top BermElevation

HighwaterElevation

DryStorageProvided

(CY)

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MAINTENANCE SCHEDULE:

The following Maintenance Schedule has been provided. The INSPECTOR must perform the Inspections. The OPERATOR/CONTRACTORmust perform all needed maintenance. Furthermore, all erosion control features requiring maintenance may not be listed below. TheOPERATOR/CONTRACTOR and INSPECTOR must perform their respective duties on all BMP's that are not listed below as well.

1. Construction Entrance - The entrance shall be maintained in a condition which will prevent tracking or flow of sediment onto publicrights-of-way. This may require periodic top dressing with additional stone or the washing and reworking of existing stone as conditionsdemand and repair and/or cleanout of any structures used to trap sediment. All materials spilled, dropped, washed, or tracked fromvehicles onto roadways or into storm drains must be removed immediately. The use of water trucks to remove materials dropped,washed, or tracked onto roadways will not be permitted under any circumstances.

2. Straw Bate Barrier - The maintenance measures are as follows: (2.1) straw bale barriers shall be inspected immediately after each rainfalland at least daily during prolonged rainfall; (2.2) close attention shall be paid to the repair of damaged bales, end runs and undercuttingbeneath bales; (2.3) necessary repairs to barriers or replacement of bales shall be accomplished promptly; (2.4) sediment deposits shallbe removed after each rainfall, they must be removed when the level of deposition reaches approximately one-halfthe height of thebarrier; and (2.5) any sediment deposits remaining in place after the straw bale barrier is no longer required shall be dressed to conformto (he existing grade, prepared and seeded.

3. Sill Fence - The maintenance measures are as follows; (3.1) silt fences shall be inspected immediately after each rainfall and at leastdaily during prolonged rainfall, any required repairs shall be made immediately; (3.2) close attention shall be paid to the repair ofdamaged silt fence resulting from end runs and undercutting; (3.3) should the fabric on a silt fence decompose or become ineffectiveprior to the end of the expected usable life and the barrier is still necessary, the fabric shall be replaced promptly; (3.4) sediment depositsmust be removed when the level of deposition reaches approximately one-half the height of the barrier; and (3.5) any sediment depositsremaining in place after the silt fence is no longer required shall be dressed to conform to the existing grade, prepared and seeded.

4. Storm Drain Intel Protection - Ths maintenance measures are as follows; (4.1) structures shall be inspected after each rain and repairsmade as necessary and (4.2) structures shall be removed and the area stabilized when the remaining drainage area has been properlystabilized.

5. Temporary Sediment Trap - The maintenance measures are as follows: (7.1) sediment shall be removed and the trap restored to itsoriginal dimensions when the sedimsnt has accumulated to one half the design volume of the wet storage, sediment removal from thebasin shall be deposited in a suitable area and in such a manner that it will not erode and cause sedimentation problems; (7.2) filter stoneshall be regularly checked to ensure that fillration performance is maintained, stone choked with sediment shall be removed and cleanedor replaced; and (7.3) the struclure should be checked regularly to ensure Ihat it is structurally sound and has not been damaged byerosion or construction equipment, the height of the stone outlet should be checked to ensure that its center is at least 1 foot below thetop of ths embankment.

6. Permanent Seeding - The maintenance measures ars as follows: (10.1) in general, a stand of vegetation cannot be determined to befully established until it has been maintained for one full year after planting; (10.2) new seedlings shall be supplied with adequatemoisture, supply water as needed, especially late in the season, in abnormally hot or dry conditions, or on adverse sites, waterapplications shall bs controlled to prevent excessive runoff; (10.3) inspect all seeded areas for failures and make necessary repairs,replacements, and reseedings within the planting season, if possible; [10.3a] If stand Is Inadequate for erosion control, over seed andfertilize using half of the rates originally specified; [10.3b] if stand is 60% damaged, re-establish following seedbed and seedingrecommendations; [10.3c] if stand has less than 40% cover, re-evaluate choice of plant materials and quantities of lime and fertilizer, thesoil must be tested to determine ifacidity or nutrient imbalances are responsible, re-establish the stand following seedbed and seedingrecommendations.

7. Mulching - All mulches and soil coverings should be inspected periodically (particularly after rainstorms) to check for erosion. Whereerosion is observed in mulched areas, additional mulch should be applied. Nets and mats should be inspected after rainstorms fordislocation or failure. If washouts or breakage occur, reinstall netting or matting as necessary after repairing damage to the slope orditch. Inspections should lake place until grasses are firmly established. Where mulch is used in conjunction with ornamental plantings,inspect periodically throughout the year to determine if mulch Is maintaining coverage of the soil surface; repair as needed.

8. Soil Stabilization Blankets & Matting - All soil stabilization blankets and matting should be inspected periodically following installation,particularly after rainstorms to check for erosion and undermining. Any dislocation or failure should be repaired immediately. If washoutsor breakage occurs, reinstall the material after repairing damage to the slope or ditch. Continue to monitor these areas until which timethey become permanently stabilized; at that Urns an annual inspection should be adequate.

9. Street Cleaning/Sweeping - The maintenance measures are as follows; (13.1) evaluate access points daily for sediment tracking; (13.2)when tracked or spilled sediment is found on paved surfaces, it will be removed daily, during times of heavy track-out such as duringrains, cleaning may be done several times throughout the day; (13.3) unknown spills or objects will not be mixed with the sediment; and(13.4) if sediment is mixed with other pollutants, it will be disposed of properly at an authorized landfill.

10. Vegetation Stabilization - Temporary or permanent seeding shall be used when graded or cleared areas exceeding five acres aresubject to erosion for a period of 14 days or more. Vegetation outside the limits of grading shall not be disturbed. Topsoil shall not bestripped in more than the immediate working area. Topsoil shall be redistributed and soon as possible after completion of grading. Uponthe redistribution oftopsoil, all distributed areas shall be seeded.

REFERENCED STANDARD FIGURES (ORSWDM)

FIGURE NAME LOCATION

Omaha Regional Stormwater Design ManualOmaha Regional Stomwater Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwaler Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwaler Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwater Design ManualOmaha Regional Stormwater Design ManualSupplemental BMP GuideSupplemental BMP GuideSupplemental BMP GuideSupplemental BMP GuideSupplemental BMP GuideSupplemental BMP Guide

9.5.2-1

9.5.7

9.5.6

9.5.8

9.5.9

9.5.159.5.16

9.5.17

9.5.20

9.5.21

9.5.239.5.24

SM-1SM-2SM-3SM^tSM-5SM-6

Construction EntranceArea Inlet ProtectionStorm Drain Intet ProtectionTemporary Diversion DikeTemporary Fill DiversionTemporary Sediment TrapTemporaiy Sediment BasinDust ControlTemporary SeedingPermanent SeedingMulchingSoil Stabilization Blankets & MattingSanitary Waste ManagementSolid Waste ManagementMaterial Delivery And StorageStrest Cleaning/SweepingVehicle And Equipment FuelingSWPPP Notification Sign

The Omaha Regional Stormwater Design Manual (ORSWDM)athltp://www.PCWPErosionControl.om.

SWPPPNOTES

1. All project procedures and materials shall conform to the following publication and ^ny additions thereto: Omaha Regional Stormwater DesignManual and the Supplemental BMP Guide. The aforementioned publications can l?a found at http://www.PCWPErosionControl.org.

2. All OPERATORS/CONTRACTORS must comply with all noise and dust control ordinances.

3. All OPERATORS/CONTRACTORS must locate all existing utility prior to Ihe start of work One Call (811).

4. Barricades shall conform to Omaha Public Works "Barricading Standards, Specifications, Methods & Materials", and/or the "Manual on UniformTraffic Control Devices".

5. All OPERATORS/CONTRACTORS shall be responsible to comply with OSHA regulations.

6. All OPERATORS/CONTRACTORS must confirm with the APPLICANT that any and all applicable governmental approvals have been receivedprior to the start of work.

7. The APPLICANT, INSPECTOR must comply with all government regulators in regards to the construction activities so as to minimize thepotential for erosion.

8. All OPERATORS/CONTRACTORS must comply with the APPLICANT, INSPECTOR, and all government regulators in regards to Iheconstruction activities so as to minimize the potential for erosion and pollution.

9. Each OPERATOR/CONTRACTOR must monitor Silt Fencing, within their areas of rssponsibilily, and install additional silt fencing if necessaryand as directed by the INSPECTOR. '

10. Each OPERATOR/CONTRACTOR shall periodically remove accumulated sediment from Temporary Sediment Traps, Temporary SedimentBasins, behind Sill Fences, and all other erosion control measures that store sediment, within their areas of responsibility, if necessary and asdirected by the INSPECTOR.

11. Each OPERATOR/CONTRACTOR must build stabilized Construction Entrances, within thsir areas of responsibility and as defined within theSWPPP. Each OPERATOR/CONTRACTOR must monitor all stabilized Construction Entrances, within their areas of responsibility, whilemaintain the entrances as needed and directed by the INSPECTOR. OPERATORS/CONTRACTORS shall not use any other access to the siteor allow others to use alternate access points.

12. Each OPERATOR/CONTRACTOR must perform preventative maintsnance on each Best Management Practice (BMP), within their arsas ofresponsibility, to ensure proper function. The INSPECTOR must ensure preventative maintenance is being performed.

13. All BMP's shall be kept in working order. Each OPERATOR/CONTRACTOR must repair all damages caused by pollutant discharge andconstruction activities, within their areas of responsibility, at or before the end of each working day and as directed by the INSPECTOR.

14. BMP's may not be removed without INSPECTOR and applicable government approval.

15. Each OPERATOR/CONTRACTOR shall be responsible for adhering to all BMP's, within their areas of responsibility.

16. In the event of a release of oil or hazardous substance, all OPERATORS/CONTRACTORS shall comply with the requirements of the NebraskaDepartment of Environmental Quality for notification, containment, investigation, remedial action and disposal.

17. The APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORS must ensure Temporary Diversion Dike and Temporary Fill Diversion areconstructed as shown within the SWPPP and as necessary to properly control pollutqnl discharge. Temporary Diversion Diks and TemporaryFill Diversion shall be installed at the end of each working day, prior to all rain events; and as directed by the INSPECTOR.

18. The APPLICANT, INSPECTOR, and/or OPERATORS/CONTRACTORS shall allow all government regulators access to the sits for inspectionsat any time, at the implementing agency's discretion.

19. The APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORS must Initiate stabilizaUon measures, such as Temporary Seeding,Permanent Seeding, and/or Mulching, as soon as possible in portions of the site where construction activities have temporarily or permanentlyceased, but in no case more than 14 days after the conshuction activity in that portion of the site have temporarily or permanently ceased. TheTemporary Seeding (9.5.20), Permanent Seeding (9.5.21), and Mulching (9.5.23) BMP's presented within the Omaha Regional StormwaterDesign Manual must be adhered to at all times. The aforementioned publicalions can be found at hltp://www.PCWPErosion Control.org.

20. For dust control, the APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORS must use any of the following measures or a combinationif necessary: establishing Temporary Seeding, Permanent Seeding, and/or Mulch in areas subject to little or no construction traffic; irrigatingstripped areas and/or haul roads; reducing vehicular speed on haul roads; and as directed by the INSPECTOR. Furthermore, the Dust Control(9.5.17) BMP presented wilhin the Omaha Regional Stormwater Design Manual must be adhered to at all times. The aforementionedpublications can be found at hltp.V/www.PCWPErosion Control.org. i

21. The APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORS must ensure sediment that has been accidenlally transported onto publicstreets is removed as needed, at the end of each working day, and prior to all rain events. Sediment shall be shoveled and/or swept from thestreet and disposed of in a manner that prevents stormwaler contamination. Furtharmore, the Street Cleaning/Sweeping (SM-4) BMP presentedwithin the Supplemental BMP Guide must bs adhered to at all times. The aforementioned publications can bs found athtlp//www.PCWPErosIonControl.ora.

22. The APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORS must adhere to all Good Housekeeping BMP's presented within theSupplemental BMP Guide. Good Housekeeping BMP's focus on keeping the work site clean and orderly while handling materials and waste ina manner that eliminates the potential for pollutant runoff. Good Housekeeping BMP's such as Sanitary Waste Management (SM-1), SolidWaste Management (SM-2), Material Delivery & Storage (SM-3), Street Cleaning/Sw^eping (SM-4), and Vehicle & Equipment Fueling (SM-5)must be addressed when applicable. The aforemenlioned publications can be found al http://www.PCWPErosionControl.org.

23. To better inform all concerned parties about the existence of the SWPPP, The APPLICANT, INSPECTOR, and CONTRACTORS/OPERATORSmust ensure an easily visible and legible sign be prominently posted al conspicuous Idcations near all site entry points. All signs must be inconformance with the SWPPP Notification Sign (SM-6) presented within the Supplemental BMP Guide. The aforementioned publications canbe found at http://www.PCWPErosionControl.org. j

24. The SWPPP documents (e.g., NDEQ-NPDES, SWPPP-SM, SWPPP-N, etc.) are essential and a requirement in one part is as binding asthough occurring in all. The SWPPP documents are complementary. Tha documents,describe and provide the complete SWPPP. TheAPPLICANT, INSPECTOR, and/or CONTRACTORS/OPERATORS may not take advantage of any apparent SWPPP errors or omissions. TheINSPECTOR shall

CONSTRUCTION ACTIVITIES & SCHEDULING

ACTIVin

Install all BMP's needed and associated with the GradingPhase such as stabilized construction entrances, sillbasins, rissr pipes, outlet pipes, silt traps, siltfence, diversions, terraces, etc...

Proceed with stripping of existing vegetation and grading inaccordance with the grading plan, while disturbing no moreIhan is necessary.

Proceed with infrastructure installation.

Implement the installation of Temporary Seeding, PermanentSeeding, and/or Mulching.

Implement the Installation all BMP's nesded and associatedwith the Building Phase.

Procged with removal of BMP's.

SCHEDULE

Prior to any stripping of existing vegetation or grading.

After Installing all BMP's needed and associated with theGrading Phase. Furthermore, INSPECTOR approval mustbe obtained befora the start of any stripping of existingvegetation or grading.

Infrastructure installation must occur prior to any lotdevelopment.

Stabilization measures must be initiated as soon as possiblein portions of the site where construction activities havetemporarily or permanently ceased, but in no case more than14 days after the construction activity in [hat portion of thesite has temporarily or permanently ceased.

Building Phase BMP's must be installed concurrently with lotdevelopment.

BMP's may not be removed until each impacted drainagebasin has been fully developed. Full dsvelopmenl shallmean installation of pavement, buildings, and utilities,landscaping, and fully established permanent seeding.Furthermore, INSPECTOR approval must be obtained beforethe removal of any BMP's.

M.l.l. BenningtonBusiness Name

GeoffMcGregor

APPLICANT SWPPP CERTIFICATION

[email protected]'s Email Address

11750 Slonegate CircleRepresentative's Name

Project If Assigned by Applicant

Address

Omaha NE

(402)334-2123Phone Number

(402)334-8079Fax Number

68154City

I hereby agree to act as APPLICANT in association with this SWPPP. Furthermore, I certify under penalty of law ths following: (1)that, this document and all supporting information has been prepared under my direction or supervision in accordance with asystem designed to assure that qualified personnel properly gathered and evaluated the information submitted; (2) that, Iunderstand and agree to abide by the terms and conditions contained wilhin this Storm Water Pollution Prevention Plan - Site Map(SWPPP-SM), the associated Storm Water Pollution Prevention Plan - Narrative (SWPPP-N), and the PCWP Grading PermitTerms (http://www.omahapermix.com); (3) that, to the best of my knowledge and belief information contained in this SWPPP istrue, complete, and accurate; (4) that, the SWPPP has been represented and warranted to conform to all applicable Standards,Criteria, Ordinances, Laws, Rules, and Regulations enacted by the - [a] PCWP and its Members, [b] Douglas County, [c] SarpyCounty, [d] State of Nebraska, and [e] United States Federal Government; (5) that, sound and established practices were used forthe crealion of this SWPPP; (6) that, I am obligated to ensure inspection, reporting, and maintenance requirements occur underthe terms of this SWPPP; (7) that, this SWPPP will be implemented as the first element of construction; (8) that, I shall indemnifyand save harmless the PCWP, its Members, Officers, Agents and Employees from all claims and demands of every nature anddescription growing out of Ihe implementation of this SWPPP, including personal injuries received and all property damagesustained; (9) that, I will retain the services of the designated DESIGNER and INSPECTOR, to petform all design and inspectionduties associated with this SWPPP, through a contractual agreement; and (10) that, corrections of defects and deficiencies indesign, construction, inspection, implementation, and testing shall be without expense to the PCWP and its Members, Officers,Agents and Employees and shall be my obligalions while acting as APPLICANT.

APPLICANTS Signature Date

4/1/2017 BEN-2017-XXXX-XXX

SITE INFORMATIONCSW-2017013H

Estimated Start Date PCWP Project Number

LockBox Storage - BenningtonProject Name

NDEQ N01 Number

12616 N 156th StreetAddress

BenningtonSubdivision Name

41°22'27.2"N

S&IDff

96<W34.6"WLongitude

wNE

Douglas

LaUlude

Total Site Area (Acres)

Disturbed Area (Acres)

Undisturbed Area (Acres)

Impervious Area Before Construction (%)

Impervious Area After Construction (%)

Counly

_68007State Zip Code

Estimated Permit Duration (Months)

Cut Volume (ydA3)

Fill Volume (ydA3)

Runoff Coefficient Before Construction

Runoff Coefflclent After Construction

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