205STORMWATER MANAGEMENT

205.01Description

This work shall consist of furnishing, installing, inspecting, maintaining, and removing BMPs in accordance with 105. 03, the Department’s Design SWP3, the submitted and accepted SWQCP or an approved written site plan developed by the Contractor.

MATERIALS

205.02Materials

Materials shall be in acco rdance with the following:

Coarse Aggregate, Class F or Higher .......................... 904.03 Fertilizer ...................................................................... 914.03 Filter Sock ................................................................... 914.09(h) Geotextile .................................................................... 918.02 Grass Seed, Temporary ............................................... 914.02 205.01

Manufactured Surface Protection Products ................. 205.04(c) Metal End S ections ...................................................... 908.06 20 Mulch .......................................................................... 914.05(a) Pipe Drains .................................................................. 715.02(d) Plastic Net.................................................................... 914.09(g) Revetment Riprap ........................................................ 904.04* Stakes .......................................................................... 914.09(b) Staples ......................................................................... 914.09(f) Top Soil ....................................................................... 914.01 Water ........................................................................... 914.09(a)

* The minimum depth does not apply.

CONSTRUCTION REQUIREMENTS

205.03General Requirements

For contracts with a Construction St ormwater General Permit, CSGP, a SWQCP shall be developed and submitted to the Engineer for review.

The Contractor shall furnish, install, inspect, maintain, and remove BMPs for land-disturbing activity areas, and develop an SWQCP in accordance with the CSGP. The Contractor’s SWQCP shall be a required contract specific component to the Department’s Design SWP3. The submitted and accepted Contractor’s SWQCP shall 40 interrelate with the Department’s Design SWP3 in order to satisfy the requirements of the CSGP.

The Contractor’s SWQCP shall be developed by a professional engineer who holds a current CPESC certification or approved equivalent. The SWQCP developer shall be familiar with the project site and be able to develop the SWQCP in accordance with the site conditions. In the event of conflict between requirements, pollution control laws, rules, or regulations of other Federal, State or local agencies, the Contractor’s SWQCP shall adhere to the more restrictive laws, rules, or regulations. 50 The SWQCP developer shall issue clarifications, correct errors and omissions, and revise the SWQCP as required. The Contra ctor’s SWQCP shall be signed and sealed by the SWQCP developer, as defined above.

The Contractor shall develop the SW QCP in accordance w ith the CSGP, the IDEM “Indiana Storm Water Quality Manua l”, ITM 803, and all other applicable contract documents.

The Contractor’s SWQCP shall include the processes and procedures of how the 60 Contractor intends to meet the requirements outlined in this section and in accordance with ITM 803.

The Contractor may elect to prepare and submit the SWQCP in multiple phases. The first phase shall show the location, installation, and maintenance of BMPs for the 205.03

existing topography of the project and identify the total number of proposed construction phases for the contract. Additional phases shall be submitted for review prior to land-disturbing activities for those phases and shall show the progression from the existing topography to final grade. Each phase of the SWQCP shall be modified to meet existing field conditions as needed. 70

Any individual phase of the SWQCP shall be submitted to the Engineer for review a minimum of 14 calendar days prior to commencing land-disturbing activities for that phase. Upon receipt, the Engineer will perform a review of the submitted phase of the SWQCP within 14 calendar days for acceptance.

Based on changes in scope, in accordance with 104.02 and 104.03, the Engineer may request a cost breakdown of the stormwater management implementation item.

The Contractor’s SWQCP shall incorporate all narrative information, plan sheets, 80 and implementation information necessary for stormwater management utilized for the project. The SWQCP shall include any revisions to the Department’s Design SWP3 and the plans. The revisions shall comply with all known permit requirements applicable to the construction phase of the project including waterway permits, or a CSGP, and those required by the Contractor in accordance with 107.01 and 205.03(c).

Electronic files of any plan sheets and narratives included as part of the SWQCP submittal shall be provided in PDF format.

On projects requiring an SWQCP, an updated field copy of the SWQCP will be 90 retained in the office of th e Engineer or at a mutually agreed upon location. Any accepted revisions shall be annotated in the field copy of the SWQCP and initialed and dated by the SWQM and the Engineer.

A copy of the Contractor’s offsite operations permits for items such as offsite stockpiles, borrow sites, waste sites, or storage areas shall be submitted to the Engineer prior to any land-disturbing activities at those sites.

Revisions to the SWQCP shall be submitted and signed and sealed by the SWQCP developer, for items that are hydraulically sized or calculated such as sediment basins 100 or other similar measures. The SWQM may submit revisions for items that are not hydraulically sized or calculated. Adjustments to the BMPs shall be subject to the Engineer’s acceptance.

If a governmental agency or a local governmental authority finds a violation of NPDES or other surface waterway permits provided in the contract documents, if any BMPs are incomplete, or the Contractor’s SWQCP is incomplete, full responsibility shall be borne by the Contractor to make the necessary corrections. In addition, if an assessment, damage judgment or finding, agreed order, fine, or any other expense for a violation of the contract requirements is leveled against the Department, the 110 Contractor shall reimburse the State for that amount within 30 days. The Contractor 205.03

agrees to indemnify and hold harmless the Department and will reimburse the Department for any assessments, damage judgments or finding, fine, penalty, or other expense relating to this portion of the contract. The Department may withhold the amount owed from the Contractor’s subsequent pay estimates. Delays caused by stop work orders from regulatory agencies, suspension of work orders from the Department, or any other delays caused by inadequate submittals or implementation will be considered Non-Excusable Delays in accordance with 108.08(c).

On contracts with a CSGP or waterway permits, the Contractor shall designate one person as the contract SWQM. The name of the SWQM shall be furnished to the Engineer at, or prior to, the pre-construction conference. If the designated individual is replaced during the contract, the replacem ent shall be designated, and notification given to the Engineer within 24 h.

On contracts requiring waterway permits and not requiring a CSGP, the individual shall have successfully completed the Department’s Constr uction Stormwater Training course and hold a current training verification document for that course. 130

On contracts requiring a CSGP, the individual shall have successfully completed the Department's Construction Stormwater Training course and hold a current certification as a CESSWI, or a CISEC, or a CPESC, or an approved equivalent.

The SWQM shall hold the pre-disturbance meeting, in accordance with 205.03(d). The SWQM shall attend at least one meeting with the Contractor, relevant Subcontractors, and the Engineer per calendar month in any month in which weekly 140 and post-event inspections are being completed and work is ongoing. The requirement to attend these meetings may be waived entirely or in part upon written approval from the Engineer.

The SWQM shall be responsible for ensuring that the Contractor’s SWQCP has been submitted for review prior to implementation. Implementation of stormwater features shall include installation, inspection, maintenance, and removal of all BMPs. The SWQM shall also be in responsible charge of inspecting the implementation of the Contractor’s SWQCP or the contract site plan. The SWQM shall be in responsible charge of the weekly and post-event inspections. Anyone performing inspections 150 under the responsible charge of the SWQM shall, at a minimum, meet the training requirements of a Waterways SWQM.

The SWQM shall accompany personnel fr om IDEM or othe r regulatory or governmental agencies during site visits by those agencies.

205.03

On contracts requiring an SWQCP, a pre-disturbance meeting shall be held on- site prior to beginning land-disturbing activities. The meeting invitees shall include the SWQM, the Contractor, the SWQCP Deve loper, appropriate Department field 160 staff, the District Stormwater Specialist, and all relevant subcontractors for the work being performed. The pre-disturbance meeti ng shall be held not more than 30 days prior to the start of land-disturbing activities. The following shall be reviewed:

phasing and sequencing.

If requested in writing, pre-disturbanc e meeting requirements may be waived in part or in full subject to the approval by the Engineer. No land-disturbing activity shall begin until this meeting has occurred or until written approval to waive the meeting has been received.

Incoming and outgoing drainage areas impacting a work location shall have 180 temporary BMPs installed as soon as practicable and prior to land-disturbing activities at those locations. Pipe end sections and anchors shall be installed when the structure is installed. If the pipe end sections or anchors cannot be placed at the same time, temporary riprap splashpads shall be placed at the outlets of the pipes until end sections or anchors can be installed.

Adjustments of the BMPs shall be made to satisfy field conditions and shall be subject to the Engineer’s approval. Adjustments made to meet field conditions shall be made as soon as practicable, shall be ma intained as necessary, and shall be noted in the SWQCP. 190

The Contractor shall provide a stable construction entrance at the points where construction traffic will enter onto an existing road. Where there is insufficient space for a stable construction entrance, other measures shall be taken to prevent the tracking of sediment onto the pavement. These temporary entrances shall be the responsibility of the Contractor to completely install, inspect, maintain, and remove.

A copy of the current manufacturer’s installation and maintenance recommendations shall be provided prior to installation of manufactured BMPs. Shipping, handling, storage, and installation of manufactured BMPs shall be in 200 accordance with the manufacturers’ recommendations or as directed. In the event of conflict between the Department’s sp ecifications and the manufacturer’s

205.03

199

recommendations, the Contractor shall adhere to the more restrictive regulation or as

directed.

Within the SWQCP, the Contractor shall provide a written plan for the collection,

storage, and disposal of concrete wastewater that is adequate for the size of the

concrete pour, the environmental conditions of the job site, and in accordance with

CSGP 3.3(a). An emergency concrete washout container shall be available, be part of

the material handling and spill prevention plan, and available on-site during concrete210

pours. Straw bale washout pits will not be allowed. Concrete washout wastewater may

either be recycled back into the truck, washed out into an adequately sized and lined

roll off container or lined in-ground pit, an approved manufactured product, or taken

back to the batch plant. Lining shall consist of a minimum of one sheet of 10 mil

plastic, be continuous with no over lapping, and shall be free of leaks.

Concrete washout capacity shall not be exceeded. Concrete wastewater shall not

be allowed to leak onto the ground, run into storm drains, or into any body of water.

Where concrete wastewater leaks onto the ground, all contaminated soils shall be

excavated and disposed of in accordance with 202, except that all costs associated with220

excavation and disposal shall be the responsibility of the Contractor.

The installation of BMPs shall include those necessary or required by permits at

off-site locations such as borrow and disposal areas, field office sites, batch plants,

locations where the Contractor’s vehicles enter and leave public roads, and other

locations where work pertaining to the contract is occurring. The Contractor’s SWQM

shall be responsible for the installation, inspection, maintenance, and removal of these

measures.

The Contractor shall employ dust control measures in accordance with 107.08(b).230

On contracts requiring a CSGP, directions to the updated field copy of the

SWQCP, a copy of the NOI, and a copy of the NOS shall be posted and maintained so

they are legible and visible at an agreed upon and publicly accessible location for the

contract. In lieu of posting the NOI and NOS, a copy of the Construction Stormwater

Posting Project Information form, CSPPI, shall also meet the posting requirements.

On contracts requiring waterway permits the Contractor shall follow the posting

requirements of those permits.

240

Inspection shall be required on all work areas associated with a CSGP. This shall

include drainage areas within contract limits leading to BMPs, areas of land-

disturbance, and areas with impacts or potential impacts to protected resources. For

contracts that have multiple work sites, inspections shall only be required for areas

operating under a CSGP or a waterway permit.

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On contracts requiring a CSGP inspections shall be performed at a minimum of

once per calendar week, 24 hours prior to a qualifying rain event, or by the end of the

next work day following every 1/2 in. or greater rain event. Rainfall shall be recorded250

using an on-site rain gauge and a log documenting rainfall total or a weather station

representative of the project location and as approved by the Engineer. For specific

areas of the project which are permanently stabilized with vegetative cover at 70%

density and no active erosion is present, inspections for that area can be reduced to

once per month if approved by the Engineer in writing. A single inspection performed

after a rain event shall satisfy the requirement for both the rain event and the weekly

inspection. No more than three inspections shall be required in a calendar week.

Inspections for these contracts shall stop once all disturbed areas are permanently

stabilized, all temporary measures have been removed, and the NOT has been

obtained.260

Inspection reports for CSGP contracts shall be submitted by the SWQM within

24 h of the day of the inspection. The inspection reports for CSGP contracts shall be

documented and submitted electronically using the current version of the

Department’s stormwater inspection management report which is available on the

Department’s website. A paper inspection form shall only be used in the event that the

electronic inspection form is out of service or as directed. Inspections shall begin when

the installation of BMPs start, when land disturbing activities begin, or if potential

impacts to protected resources will occur, whichever is earliest.

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Permanent BMPs shall be incorporated into the work at the earliest practicable

time.

205.04Temporary Surface Stabilization

Non-vegetated areas shall be temporarily stabilized if the area remains inactive

for more than seven days. The area will be considered inactive when no meaningful

work toward accomplishing a pay item has been performed at a site of land-disturbing

activity. Stabilization methods shall be in accordance with the SWQCP, or as directed.

280

Temporary seeding shall be placed on disturbed areas that are expected to be

inactive for more than seven days, or as agreed to by the Contractor and the Engineer.

Seed shall be placed either by drilling in, spraying in a water mixture, or by use of a

mechanical method which places the seed in direct contact with the soil. Where

inaccessible to mechanical equipment, or where the area to be seeded is small, a hand

operated cyclone seeder or other approved equipment may be used. Seed shall not be

covered more than 1/2 in. Seed shall be distributed utilizing approved methods which

allow for even distribution of the seed. If as a result of a rain event, the prepared seed

bed becomes rutted, crusted or eroded, or depressions exist, the soil shall be reworked290

until it is smooth. Reworked areas shall be re-seeded. All seeded areas shall be

mulched within 24 h after seeding.

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201

Temporary seed shall be used for surface stabilization and temporary ground

cover. Temporary cover mixtures shall be placed and be subject to seasonal limitations

as defined herein. This mixture is not intended to be used as a permanent seed mixture.

This mixture shall not be used to satisfy the requirements of the warranty bond. The

mix shall be spray mulched where the slope is steeper than 3:1. From June 16 through

August 31, mulching alone shall be used to stabilize the soil.

300

Spring mix shall be used from January 1 through June 15. This mixture shall be

applied at the rate of 150 lb/ac. The mix shall consist of oats.

Fall mix shall be used from September 1 through December 31. This mixture shall

be applied at the rate of 150 lb/ac. This mix shall consist of winter wheat.

Unless otherwise specified in the SWQCP or the contract site plan, fertilizer shall

be spread uniformly over the area to be seeded and shall be applied at 1/2 the rate310

shown in 621.05(a). Fertilizer shall only be applied during the active growing season

March through November.

Mulch shall be applied uniformly in a continuous blanket at the rate of 2.5 t/ac. If

areas are seeded, mulch shall be placed within 24 h after seeding. The percent of

moisture in the mulch shall be determined in accordance with 621.14(c). Mulch shall

be placed in accordance with one of the following types or as directed.

On a slope flatter than 3:1, or where specified, Type A shall be used. On a slope320

of 3:1 or steeper but flatter than 2:1, or where specified, Type B or Type C may be

used. On a slope of 2:1 or steeper, or where specified, a manufactured surface

protection product, in accordance with 205.04(c), shall be used.

Mulch shall be punched into the soil so that it is partially covered. The punching

operation shall be performed parallel to the contour of the slope. The tools used for

punching purposes shall be disks that are notched and have a minimum diameter of 16

in. The disks shall be flat or uncupped. Disks shall be placed a minimum of 8 in. apart.

Shaft or axle sections of disks shall not exceed 8 ft in length.330

The disk for punching shall be constructed so that weight may be added or

hydraulic force may be used to push puncher into the ground. An even distribution of

mulch shall be incorporated into the soil.

The mulch shall be held in place by means of commercially produced water borne

mulch binder product. The product shall be manufactured and used in accordance with

all applicable State and Federal regulations and shall be applied in accordance with

205.04

202

the manufacturer’s written instructions. A copy of the written instructions shall be340

supplied to the Engineer prior to the seeding work. The product shall include a

coverage indicator to facilitate visual inspection for evenness of application. If the

mulch fails to stay in place, the Contractor shall repair all damaged areas.

The mulch shall be held in place with a polymeric plastic net. The plastic net shall

be unrolled such that it lays out flat, evenly, and smoothly, without stretching the

material. The plastic net shall be held in place by means of staples. The staples shall

be driven at a 90° angle to the plane of the soil slope. Staples shall be spaced not more

than 4 ft apart with rows alternately spaced. The plastic net shall be secured along the350

top and bottom of the soil slope with staples spaced not more than 1 ft on center. The

ends and edges of the plastic net shall be overlapped approximately 4 in. and stapled.

Overlaps running parallel to the slope shall be stapled 1 ft on center and overlaps

running perpendicular to the slope shall be stapled at least 3 ft on center. The plastic

net shall be placed with the length running from top of slope to toe of slope, or the

plastic net shall be placed with the length running horizontally or parallel to the

contour.

Prior to placing a manufactured surface protection product, the area to be covered360

shall be free of all rocks or clods of over 1 1/2 in. in diameter, and all sticks or other

foreign material, which prevent the close contact of the blanket with the seed bed.

After the area has been properly shaped, fertilized, and seeded, the manufactured

surface protection product shall be laid out flat, evenly, and smoothly, without

stretching the material.

Manufactured surface protection products may be used for covering an area that

has not been seeded. Geotextile soil cover shall not be used to cover seeded areas.

370

An excelsior blanket may be used as mulch for seeding where seeding is specified

or where erosion control blanket is specified. Excelsior blankets shall be placed within

24 h after seeding operations have been completed. Excelsior blankets shall be

installed in accordance with the manufacturer’s recommendations.

A straw blanket may be used as mulch for seeding where mulched seeding is

specified or where erosion control blanket is specified. Straw blankets shall be placed

within 24 h after seeding. The straw blanket shall be unrolled over the designated area380

so that the plastic mesh is on top and the straw fibers are snugly and uniformly in

contact with the soil surface. The rolls shall be butted together and stapled in place.

The staples shall be driven through the blanket at a 90° angle to the plane of the ground

surface. Each staple shall anchor the plastic mesh. The staples shall be spaced in

accordance with the manufacturer’s recommendations.

205.04

203

For placement on a slope, the straw blankets shall be placed with the length

running from the top of slope to the toe of slope and shall extend a minimum of 3 ft

over the crown of the slope. The blanket shall be stapled in accordance with the

manufacturer’s recommendations.390

For placement in ditch lines, the straw blanket shall be unrolled parallel to the

centerline of the ditch. The blanket shall be placed so that there are no longitudinal

seams within 24 in. of the bottom centerline of the ditch. In a ditch line, the blanket

shall be stapled in accordance with the manufacturer’s recommendations with a

minimum of six staples across the upstream end of each roll.

The Contractor shall use degradable RECPs including netting, open weave textile,

and erosion control blankets.400

Seed shall be applied in accordance with 621 unless soil infilling is required.

If soil infilling is required, RECP shall be first installed and then seed applied and

brushed or raked 1/4 to 3/4 in. of topsoil into voids in the RECP filling the full product

thickness. Staples of at least 6 in. in length shall be used to secure the RECP. The

RECP shall be unrolled parallel to the primary direction of flow and placed in direct

contact with the soil surface. The RECP shall not bridge over surface inconsistencies.

Edges of adjacent RECP shall be overlapped by 2 to 4 in. Staples shall be placed to

prevent seam separation in accordance with the manufacturer’s recommendations.410

Disturbed soil shall be covered with geotextile. The covering shall be placed over

the exposed soil in a shingle like fashion with a 2 ft minimum overlap covering all

loose or disturbed soil. The geotextile, if new, shall be in accordance with 918.02. The

geotextile used for soil covering need not be new but shall not have holes or unrepaired

rips or tears. All repairs shall be made in accordance with the manufacturer’s

recommendation.

205.05Concentrated Flow Protection420

Check dams and modified check dams shall be constructed as shown on the plans.

Geotextile for check dams shall be in accordance with 616 unless otherwise specified.

Temporary revetment riprap shall be in accordance with 616. No. 5 and No. 8 filter

stone shall be in accordance with 904.

Traversable check dams shall be composed of 8 in. minimum diameter socks filled

with straw, ground wood chips, shredded bark, or other approved material for site430

specific conditions. Rolls and socks may be stacked in a triangle pattern as shown on

205.05

204

the plans. Check dams shall be staked as shown on the plans or as specified by the

manufacturer.

Grading for diversion interceptors shall be in accordance with 203 with the

exception that compaction requirements will not apply. The Contractor shall identify

the construction areas which shall utilize diversion Type A or Type B. Slope drains

shall be provided at the low points of the diversion interceptor. Perimeter diversion,

Type C shall be installed prior to earth moving activities and shall be immediately440

stabilized. Type A or Type B shall be stabilized if anticipated to be left in place for

more than seven calendar days.

Sediment traps shall be constructed with revetment riprap, filter stone and

geotextile.

Embankment construction shall be in accordance with 203. Temporary revetment

riprap used for overflow protection shall be in accordance with 904, unless otherwise450

specified in the SWQCP. Sediment basins shall be constructed as shown on the plans,

or as specified in the SWQCP. Sediment basins shall be designed to provide a

minimum storage volume to contain the runoff from a 10 year 24 h storm event. When

required, water shall be withdrawn from the top of the water column. Basin slopes

shall be stabilized upon achieving design grades. Outfalls shall be stabilized within 24

h of installation of the basin outlet.

Slope drain pipes shall be lengthened as required due to the construction of the

embankment.460

Designated vegetative filter strips shall not be disturbed. Rills that form shall be

repaired. Fertilizer shall be applied as specified in the SWQCP.

Splashpads shall be constructed using revetment riprap on geotextile, or other

approved material for site specific conditions and shall be sized to prevent erosion or

scour.

470

All inlets shall have sediment control measures installed when the drainage area

contributing to the inlet is affected by land-disturbing activity, adjacent to hauling

operations, adjacent to disturbed areas, or as directed. A copy of the current

manufacturer’s installation and maintenance recommendations shall be provided prior

to installation of manufactured inlet protection in accordance with 205.03(e). All inlet

205.05

205

protection devices shall provide a means of emergency overflow. Geotextile wrapped

under or over a grate shall not be used.

205.06Perimeter and Resource Protection480

Shipping, handling and storage shall be in accordance with the manufacturer’s

recommendations. Silt fence material shall be in accordance with 918.02(d). The silt

fence material will be rejected if it has defects, tears, punctures, flaws, deterioration,

or damage incurred during manufacture, transportation, storage, or installation. Each

roll shall be labeled or tagged to provide product identification.

Joints shall be made from the ends of each section of fence wrapped around a

wood stake and joined together or other method recommended by the manufacturer.490

Copies of all current manufacturer manuals shall be provided prior to installation. Silt

fence shall not be used in conveyance channels, areas prone to flooding, or areas of

concentrated flow.

Filter sock shall be designed for filtration or diversion depending on its intended

use. Filter sock shall be installed, secured and overlapped in accordance with the

standard drawings. The manufacturer’s specifications for installation may be

substituted with the approval by the Engineer. Filter sock shall be in accordance with

914.09(h).500

Filter berms shall be constructed of filter sock, or a combination of riprap or No.

5 and No. 8 filter stone.

Protected resource fence shall be a commercially available material marketed as

snow fencing, have a minimum height of 4 ft and be made of high density

polyethylene. All protected resource fence shall be orange in color. Protected resource

fence shall be installed using T-posts spaced no more than 10 ft apart and secured with510

plastic fence ties. Pull posts and corner posts will not be required. T-posts shall be

buried to 1/3 of their height.

Within areas prone to flooding, or concentrated flow “Do Not Disturb” signs in

accordance with 622.20 may be accepted in lieu of fencing, if requested and accepted

in writing prior to installation. If “Do Not Disturb” signs are used in lieu of fencing,

they shall be spaced at a distance of 25 ft apart to delineate the entire length of concern.

At a minimum, two signs shall be used.

520

205.07Maintenance

BMPs shall be inspected in accordance with 205.03(g). If conditions do not allow

205.07

206

the Contractor access to the location of the BMPs using normal equipment and

maintenance, the Contractor may submit to the Engineer an acceptable written

alternate schedule, within 48 h, to bring the BMPs back into compliance.

Accumulated sediment shall be removed once it reaches 1/2 of the height of the

filter sock when used for perimeter protection and 1/3 the height when used for inlet

protection. The filter sock shall be inspected to ensure that it is holding its shape and530

allowing adequate flow. Eroded and damaged areas shall be repaired.

If the fence fabric tears, starts to decompose, or becomes ineffective, the affected

portion shall be replaced. Deposited sediment shall be removed once it reaches 1/3 the

height of the fence at its lowest point. Once the contributing drainage area has been

stabilized, the Contractor shall remove the fence and sediment deposits, grade the site

to blend with the surrounding area, and stabilize the graded area.

Accumulated sediment shall be removed once it reaches 1/4 of the height of the

filter berm. The filter berm shall be inspected to ensure that it is holding its shape and

allowing adequate flow. Eroded and damaged areas shall be repaired.

Accumulated sediment shall be removed once identified and after each storm

event. Flushing with water will not be allowed. The sediment shall not be allowed to

re-enter the paved area or storm drains. Manufactured inlet protection shall be

maintained in accordance with the manufacturer’s recommendations.

550

Sediment shall be removed once it reaches 1/2 the height of the check dam.

Sediment shall be removed and disposed of in accordance with 201.03 and 203.08.

The Contractor shall rebuild or repair each damaged check dam to maintain the design

height, cross-section, and control function.

Following each rain event, the Contractor shall repair slope erosion and piping

holes as required. Sediment shall be removed once it has accumulated to 1/2 design

volume. The Contractor shall replace the coarse aggregate filter stone if the sediment560

pool does not drain within 72 h following a rain event.

Sediment shall be removed once it has accumulated to 1/2 the design volume. The

filter stone around the riser pipe shall be replaced if the sediment pool does not drain

within 72 h following a rain event.

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207

The containment system shall be inspected for leaks, spills, and tears, and shall

be repaired or replaced as necessary. The Contractor shall ensure that each570

containment system maintains adequate capacity and has the appropriate lining.

Solidified waste concrete shall be disposed of in accordance with 202.

Protected resource fence shall be maintained in an upright position with no tears

or missing sections.

Protected resource signs and posts shall be maintained in an upright and legible

condition.580

Sediment shall not be allowed to be discharged or tracked onto roadways that are

open to traffic. If sedimentation has occurred on a roadway open to traffic, the debris

shall be removed immediately, or as directed, in a manner that is in accordance with

all applicable statutes and regulations. Clearing of sediment shall not include the

utilization of mechanical methods that will result in mobilization of dust off the project

site or flushing the area with water unless the flushed water is directed to an

appropriate sediment control measure. Cleared sediment shall be redistributed or

disposed of in a manner that is in accordance with all applicable statutes and590

regulations.

205.08Stormwater Deficiencies

Immediate deficiencies include:

contract stormwater and waterway permits and regulations.

600

acceptance of a submitted SWQCP or prior to the pre-

disturbance meeting, if not waived by written permission.

resource.

CSGP.

610

Corrective actions for immediate deficiencies shall be completed as directed by

the Engineer or no later than 24 h after notification, including weekends or holidays.

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208

BMP deficiencies include:

plans or the accepted SWQCP.

Corrective actions for BMP deficiencies shall be completed within 48 h of

notification or as directed. Corrective action for failure to a hold a pre-disturbance

meeting shall consist of holding the meeting on-site after earth disturbing activities

have begun or BMPs have been installed.

For unresolved deficiencies, the Engineer may suspend work on the contract

except for that work necessary to correct the deficiencies, for traffic maintenance, and

for the protection of life and property until the deficiencies are corrected. Delays

caused by these deficiencies will be considered non-excusable delays in accordance630

with 108.08(c).

If immediate deficiencies are not remedied within 24 h after written notification,

the Contractor may be assessed quality adjustments. If BMP deficiencies are not

remedied within 48 h after written notification, the Contractor may be assessed quality

adjustments. When an alternate schedule is accepted by the Engineer, in accordance

with 205.07, and that schedule is not met, the Contractor may be assessed quality

adjustments.

640

In accordance with 109.05.1(f), the Contractor may be assessed quality

adjustments of $200 for each BMP deficiency per calendar day, or part thereof, that

the deficiency remains uncorrected after the initial notification period. No BMP

deficiency quality adjustments will accrue without prior written notification from the

Engineer of the deficiency.

In accordance with 109.05.1(f), the Contractor may be assessed quality

adjustments of $200 for each immediate deficiency per calendar day, or part thereof,

that the deficiency remains uncorrected.

650

In accordance with 107.16 and 109.05.1(f), the Contractor will be assessed quality

adjustments of $500 for each illicit discharge.

Permit postings will be considered deficient and subject to quality adjustments if

they do not meet the requirements of the permitting agency or the requirements listed

in 205.03(f).

Each contiguous 100 ft section, or portion thereof, of silt fence will be considered

deficient and subject to quality adjustments if the fence material has a cut or tear

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209

exceeding 1 ft in length, or a seam has separated, or the retained sediment exceeds 1/2660

of the height of the fence, or the fence is not installed as shown on the standard

drawings.

Each contiguous 50 ft section, or portion thereof, of filter sock will be considered

deficient and subject to quality adjustments if it is not installed and maintained in

accordance with the standard drawings and the manufacturer’s recommendations.

Each check dam, sediment basin, or sediment trap will be considered deficient

and subject to quality adjustments if stormwater circumvents the measure, or the

retained sediment exceeds 1/2 of the design volume, or they are not installed in670

accordance with the accepted SWQCP, as shown on the plans, or the contract site plan.

Inlet protection devices will be considered deficient and subject to quality

adjustments if stormwater circumvents the measure, or they are not installed and

maintained in accordance with the manufacturer’s recommendations, or they do not

provide a means of emergency overflow lower than the adjacent roadway, or the

accumulated sediment exceeds 1/2 of the capacity of the device.

Manufactured BMPs will be considered deficient and subject to quality

adjustments if stormwater circumvents the measure, or they are not installed and680

maintained in accordance with the manufacturer’s recommendations.

Other BMPs will be considered deficient and subject to quality adjustments if they

are not installed in accordance with the accepted SWQCP, as shown on the plans, the

contract site plan, or they are not maintained adequately to perform their intended

function.

For any specific deficiency, quality adjustments will cease accruing when that

specific deficiency is corrected. Site inspection quality adjustments will cease accruing

when the next acceptable inspection is performed.690

205.09Removal

BMPs shall be removed as soon as an area becomes stable. All BMPs shall be

removed prior to application for the NOT. The Contractor shall remove and dispose

of all excess silt accumulations, dress the area, and reestablish vegetation to all bare

areas in accordance with the contract requirements. Use or disposal of the BMPs shall

be as specified in the SWQCP.

205.10Method of Measurement

Temporary silt fence and traversable check dams will be measured by the linear700

foot.

Protected resource fence will be measured by the linear foot, installed and

removed. Measurement will be made along the top of the fence from outside to outside

of end posts for each continuous run of fence.

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210

Protected resource signs, temporary sediment basins, standard metal end sections,

and temporary inlet protection will be measured by the number of complete units

installed.

710

Temporary revetment riprap check dams, temporary revetment riprap, temporary

sediment traps, splashpads, temporary filter stone, temporary mulch, No. 2 stone for

stable construction entrances, and fertilizer will be measured by the ton.

Temporary mulch stabilization, manufactured surface protection products, and

temporary geotextile will be measured by the square yard.

Temporary seeding will be measured by the pound.

Removal of sediment will be measured by the cubic yard.720

Temporary slope drains will be measured by the linear foot. Measurement will be

made for the maximum footage in place at one time, per drain location regardless of

the number of times the material is moved.

Temporary filter berms and filter sock will be measured by the linear foot

complete in place. Overlapping sections of filter sock will not be measured for

payment.

Revetment riprap and filter stone used in sediment basins will be measured by the730

ton.

Excavation for detention ponds, temporary sediment traps and temporary

sediment basins will be measured as common excavation in accordance with 203.27.

Diversion interceptors Type A and Type B, and interceptor ditches will not be

measured for payment. Diversion interceptors Type C will be measured by the linear

foot.

Mobilization and demobilization for surface stabilization will be measured by740

each trip as provided in the submitted and accepted SWQCP.

Weekly inspections will be measured by the number of specified weekly

inspections conducted after the contract completion date.

SWQCP preparation and stormwater management implementation will not be

measured for payment.

BMPs used at the off-site locations in accordance with 205.03 and concrete

washouts will not be measured for payment.750

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205.11Basis of Payment

The accepted quantities of diversion interceptors Type C, protected resource

fence, silt fence, and traversable check dams will be paid for at the established unit

price per linear foot.

Protected resource signs, temporary sediment basins, standard metal end sections,

and temporary inlet protection will be paid for at the established unit price per each

unit installed.

760

Temporary revetment riprap check dams, temporary revetment riprap, temporary

sediment traps, splashpads, temporary filter stone, temporary mulch, No. 2 stone for

stable construction entrances, and fertilizer will be paid for at the established unit price

per ton.

Temporary mulch stabilization, manufactured surface protection products, and

temporary geotextile will be paid for at the established unit price per square yard.

Temporary seeding will be paid for at the established unit price per pound.

770

Removal of sediment will be paid for at the established unit price per cubic yard.

Temporary slope drains, temporary filter berms, and filter sock will be paid for at

the established unit price per linear foot. No additional payment will be made for any

required overlapping sections of filter sock.

Revetment riprap and filter stone used in sediment basins will be paid for at the

established unit price per ton.

The accepted quantities of excavation for detention ponds, temporary sediment780

traps, and temporary sediment basins will be paid for as common excavation in

accordance with 203.28.

Mobilization and demobilization for surface stabilization will be paid for at the

established unit price per each and will be made for the initial movement to the project

site, and for each occurrence as specified in the submitted and accepted SWQCP, or

as directed.

Weekly inspections will be paid for at the established unit price per each for

inspections conducted after the contract completion date. No payment will be made790

for inspections during the time when liquidated damages, in accordance 108.09, are

assessed.

The Department will include the pay item Stormwater Management Budget, with

an established dollar amount, in the proposal to pay for BMP work. This established

amount is the Department’s estimate of the total cost of the BMP work required to be

performed for the contract. The established amount shown in the proposal is included

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212

in the total bid amount. The Department will pay for those items installed and listed

with established prices for the quantities installed as specified in the submitted and

accepted SWQCP. If the BMP work exceeds the Department’s estimated amount, the800

additional BMPs shall be explained and submitted as a revision to the SWQCP. The

additional work will be reviewed for acceptance in accordance with 104.03 except that

the additional BMP work will be paid for at the pre-determined established prices

shown.

The Department will pay to replace BMPs that have failed due to differing site

conditions or significant changes in the character of work in accordance with 104.02,

if those BMPs have been installed and maintained in accordance with the accepted

SWQCP, as shown on the plans, or the contract site plan.

810

The Department will pay to replace BMPs that have failed after exceeding the

lifespan of the BMP, as specified in the manufacturer’s guidelines, if those BMPs were

installed and maintained in accordance with the accepted SWQCP, as shown on the

plans, or the contract site plan. Payment will be at the established prices shown in

and may occur no more than once per year

The item SWQCP Preparation will be paid for based on the highest total number

of construction phases for the contract. The highest total number of phases will be

based on either the number of phases established within the original contract

documents or the number of phases proposed in the SWQCP. The initial submitted820

and accepted SWQCP shall list the number of construction phases. Payments on the

item will be made after a SWQCP phase has been reviewed and accepted. The payment

of the SWQCP Preparation lump sum item will be calculated as follows:

SWQCP payment = P sa /Pt

where:

Psa = Total number of submitted and accepted phases of the SWQCP.

Pt = Total number of construction phases established for the contract.830

After the contract site plan or the initial phase of the SWQCP has been submitted

and accepted, 25% of the Stormwater Management Implementation contract bid price

will be paid. The balance will be paid as the plan is implemented over the life of the

contract. Stormwater Management Implementation shall include any costs beyond the

established prices associated with the inspection, installation, maintenance, and

removal including mobilization and demobilization of all temporary BMPs.

Items shown with an established price will be paid for at the prices shown. If any

of the following items are shown in the schedule of pay items, the bid item and price840

will prevail over the established prices shown.

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213

Payment will be made under:

Pay Item Pay Unit

Symbol

Price

Established

Diversion Interceptor Type C ............................... LFT ................. $27.00

Fertilizer ............................................................... TON ................ $800.00

Filter Sock ............................................................ LFT ................. $6.50

Manufactured Surface Protection Product ............ SYS ................. $1.75

Mobilization and Demobilization850

for Surface Stabilization.................................. EACH ............. $800.00

No. 2 Stone ........................................................... TON ................ $50.00

Protected Resource Fence..................................... LFT ................. $2.50

Protected Resource Sign ....................................... EACH ............. $96.00

Sediment, Remove................................................ CYS................. $26.50

Splashpad ............................................................. TON ................ $70.00

Standard Metal End Section ................................. EACH ............. $400.00

Stormwater Management Budget ......................... DOL

Stormwater Management Implementation ........... LS

SWQCP Preparation ............................................. LS860

Temporary Check Dam, Revetment Riprap ......... TON ................ $75.00

Temporary Check Dam, Traversable.................... LFT ................. $20.00

Temporary Filter Berm ......................................... LFT ................. $20.00

Temporary Filter Stone......................................... TON ................ $54.00

Temporary Geotextile........................................... SYS ................. $3.50

Temporary Inlet Protection................................... EACH ............. $130.00

Temporary Mulch Stabilization ............................ SYS ................. $0.40

Temporary Mulch ................................................. TON ................ $510.00

Temporary Revetment Riprap .............................. TON ................ $70.00

Temporary Sediment Basin .................................. EACH ............. $3,800.00870

Temporary Sediment Trap .................................... TON ................ $51.00

Temporary Seed ................................................... LBS ................. $3.30

Temporary Silt Fence ........................................... LFT ................. $2.75

Temporary Slope Drain ........................................ LFT ................. $25.00

Weekly Inspection ................................................ EACH ............. $510.00

The cost for revisions or amendments to permits required due to the Contractor’s

means and methods shall be included in the cost of SWQCP Preparation.

The cost for any future revisions to the SWQCP due to the Contractor’s means880

and methods shall be included in the cost of SWQCP Preparation.

The costs for trenching, backfilling, posts, fencing, and all necessary incidentals

shall be included in the cost of temporary silt fence.

The costs for protected resource fence shall include all materials, placement,

removal, maintenance, and all necessary incidentals.

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The costs for protected resource signs shall include all materials, placement,

removal, maintenance, and all necessary incidentals.890

The cost for stakes, trenching, backfilling, posts, and all necessary incidentals

shall be included in the cost of temporary check dams, traversable.

The payment for temporary sediment basin shall include all costs involved with

construction of the basin except for excavation, revetment riprap, and filter stone.

The payment for temporary sediment trap shall include all costs involved with

construction of the trap except for excavation.

900

Temporary entrances utilized by the Contractor for borrow and waste areas will

not be paid for directly.

The costs for diversion interceptor Type A and Type B and interceptor ditches

shall be included in the cost of other earth moving items.

The cost for anchors and all incidentals necessary to perform the work shall be

included in the cost of temporary slope drains.

The costs of materials, installation, inspection, maintenance, and removal of910

BMPs at off-site locations designated in 205.03 will not be measured for payment.

The payment for BMPs specified herein shall include materials, installation,

maintenance, removal and proper disposal.

The costs associated with sediment removal due to BMP maintenance shall be

included in the cost of sediment removal.

The costs associated with the replacement of temporary filter stone due to BMP

maintenance will be paid for as temporary filter stone.920

The costs of constructing, maintaining, and removal of the construction entrance,

other than those constructed by the Contractor for borrow and waste sites, shall be

included in No. 2 stone. No direct payment will be made for construction entrances

for borrow and waste sites.

The costs associated with concrete washout will not be paid for directly but shall

be included in the costs of other concrete pay items.

All costs associated with the weekly and pre- and post-event inspections,930

including inspections required by regulatory agencies, and all other inspections

conducted prior to the contract completion date, shall be included in the cost of

Stormwater Management Implementation.

205.11