Arapahoe Basin - Advertisement - Appendix J - SWMP.pdf

1 SWMP Plan Sheets

• Notes, tabulation, site description, sequence of major activities, area of disturbance, existing soil data, existing vegetation percent cover, potential pollutant sources, receiving water, non-stormwater discharges and environmental impacts.

1 S W

M P

P lan S heets

SWMP TEMPLATE TEXT FOR PROJECTS WITH LESS THAN 1 ACRE OF DISTURBANCE

1. SITE DESCRIPTION

A. PROJECT SITE LOCATION: CDOT A-Basin Property – 28214 Highway 6, Dillon, CO 80435

B. PROJECT SITE DESCRIPTION: The project involves installation of two tanks on the project site. After the installation is complete, the disturbed areas are be repaved with asphalt.

C. ACRES OF DISTURBANCE:

1. Total area of construction site (LOC AREA): 0.8 acres

2. Total area of proposed disturbance (LDA): 0.58 acres

3. Total area of seeding: N/A

D. RECEIVING WATER:

1. Outfall Locations: None

2. Names of receiving water(s) on site: None

3. Ultimate receiving water: North Fork Snake River

4. Horizontal distance nearest water of the state is from project: 2,450 feet southwest of site.

E. EXISTING SOIL DATA: Cryaquolls-Leighcan family, 0 to 15 % slopes; poorly drained soils, occasional frequency of flooding.

F. EXISTING VEGETATION, INCLUDING PERCENT COVER:

Vegetative transects are not required, by permit, on projects with under an acre of disturbance. However, it is advised that transects be completed prior to construction, as a quality control for post construction revegetation assessment. If transects are not completed on a project, at a minimum describe the quality of the existing vegetation.

Vegetation does not exist within the area of disturbance.

2. STORMWATER MANAGEMENT CONTROLS FIRST CONSTRUCTION ACTIVITIES

THE CONTRACTOR SHALL PERFORM THE FOLLOWING:

A. POTENTIAL POLLUTANT SOURCES

1. Evaluate, identify and describe all potential sources of pollutants at the site in accordance with subsection 107.25 and place any BMPs/Control Measures required to contain potential pollutants.

B. OFFSITE DRAINAGE (RUN ON WATER)

1. Place BMPs/Control Measures to address run-on water in accordance with subsection 208.03.

C. CONSTRUCTION DEWATERING:

1. Obtain a dewatering permit from CDPHE if conditions of their low risk guidance for Discharges of

Uncontaminated Groundwater to Land are not met; see subsection 107.25(b) 8.

D. VEHICLE TRACKING PAD

1. BMPs/Control Measures shall be implemented in accordance with subsection 208.04.

E. PERIMETER CONTROL

1. Perimeter control shall be established as the first item on the SWMP to prevent the potential for pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters.

2. Perimeter control may consist of vegetation buffers, berms, silt fence, erosion logs, existing landforms, or other BMPs/Control Measures as approved.

3. Perimeter control shall be in accordance with subsection 208.04.

3. SWMP ADMINISTRATOR:

A. SWMP ADMINISTRATOR FOR DESIGN:

Name/Title Contact Information

Tim Hagert 720-582-0694 tim.hagert@state.co.us

B. SWMP ADMINISTRATOR FOR CONSTRUCTION: (As defined in Subsection 208) The Contractor shall designate a SWMP Administrator for Construction upon ownership of the SWMP. The SWMP Administrator shall become the owner/operator and assume responsibility for all design changes to the SWMP implementation and maintenance in accordance to 208.03. The SWMP Administrator shall be responsible for implementing, maintaining and revising SWMP, including the title and contact information. The activities and responsibilities of the SWMP Administrator shall address all aspects of the projects SWMP. (Update the information below for each new SWMP Administrator) (Copy of TECS Certification must also be included in the SWMP Notebook.) The SWMP Administration for construction is not a separate pay item but is included in the cost of the work.

Name/Title Contact Information Certification # Start Date Engineer Approval

4. DURING CONSTRUCTION

The SWMP should be considered a “living document” that is continuously reviewed and modified. During construction, the following items shall be added, updated, or amended as needed by the Contractor in accordance with Section 208

A. MATERIALS HANDLING AND SPILL PREVENTION: prior to construction commencing the Contractor shall submit a

Spill Prevention, Control and Countermeasure Plan, see subsection 208.06. Materials handling shall be in accordance with subsection 208.06.

B. STOCKPILE MANAGEMENT: shall be done in accordance with subsection 107.25 and 208.07

C. CONCRETE WASHOUT: Concrete wash out water or waste from field laboratories and paving equipment shall be contained in accordance with subsection 208.05.

D. SAW CUTTING: shall be done in accordance with subsection 107.25, 208.04, 208.05

E. STREET SWEEPING: shall be done in accordance with subsection 208.04

5. BMP/CONTROL MEASURE MAINTENANCE

A. Maintenance shall be in accordance with subsection 208.04 (f).

6. INTERIM AND PERMANENT STABILIZATON

A. SEEDING PLAN: Seeding will not be required for this project.

7. PRIOR TO PROJECT FINAL ACCEPTANCE

A. Partial Acceptance shall be in accordance with subsection 107.25 (d), 208.10 and 214.04 at the Partial Acceptance of the project, it shall be determined by the SWMP Administrator for

Construction and the Engineer which temporary BMPs/Control Measures shall remain until 70% revegetation is established or which shall be removed.

B. At the end of the project, all ditch checks shall either consist of temporary erosion logs (or equivalent) or permanent riprap.

C. All storm drains shall be cleaned prior to the Final Acceptance of the project. Work shall be included in 202 Clean Culvert.

mailto:tim.hagert@state.co.us

8. NARRATIVES:

A. ADDITIONAL BMPS/CONTROL MEASURES AND NARRATIVES:

BMP/Control Measure details and narratives not covered by the SWMP or Standard Plan M-208, M-216 shall be added to the SWMP notebook by the SWMP Administrator.

BMP Matrix:

1. M-Standards have been included along with standard BMP narratives. If a Non-Standard BMP will be used or the standard narrative does not apply, the SWMP Administrator shall write a Non-Standard BMP narrative, place an

“X” in the column and complete a Non-Standard BMP Specification and Narrative for the SWMP notebook.

2. The SWMP Administrator for Construction shall place an “X” in the column In Use on Site when the BMP/Control Measure has been installed.

3. Place an “X” in the column BMP/Control Measure to be located by SWMP Administrator for Construction if the SWMP Administrator shall locate the BMP/Control Measure during construction. These BMP/Control Measures are not currently located on SWMP Plans but are anticipated to be used during construction (i.e. Vehicle Tracking Pad, Batch Plants, etc.). The SWMP Administrator for Construction shall locate these prior to or during construction and reflect on SWMP Map.

4. Place an “X” in the column Initial Construction if the BMP/Control Measure is to be installed prior to construction activity.

STRUCTURAL BMPs/Control Measures that may be potentially used on the project for erosion and sediment control; practices may include, but are not limited to:

APPLICATION,

BMP/CONTROL MEASURE

NARRATIVE

M -S

TA

N

D A

R D o r

X fo r

N O

N -S

TA

N

D A

R D

IN

U

S E O

N S

IT

E

B M

P /C

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TR

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L M

E A

S U

TO

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A

TE

D B

Y S

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A

M

IN

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TR

A

BMP/CONTROL MEASURE

IMPLEMENTATION PHASE

IN

IT

IA

L

C O

N S

TR

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TI

O

N

C

TI

V

Y

(C

N

TR

O L

M E A

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TA

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E D

P R

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C O

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TR

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TI

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N

IN

TE

IM

N S

TR

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TI

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IE

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M A

N E N

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B

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A

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PROTECTION OF EXISTING

WETLANDS

Fence (plastic) and erosion logs

Fence (plastic) shall be placed in combination with erosion logs to prevent encroachment of construction traffic and sediment into state waters prior to start of construction disturbances. Fence (plastic) shall be placed adjacent to the wetlands; erosion logs shall be placed between the plastic fence and disturbance area. Logs shall be placed to direct flows away from or filter water running into wetlands from disturbance areas.

NA NA

PROTECTION OF EXISTING

TREES/LANDSCAPING

Fence (plastic)

Fence (plastic) shall be used in areas indicated in the plans to prevent encroachment of construction traffic and sediment for the protection of mature trees and/or existing landscaping prior to start of construction disturbances. X X

CHECK DAM/DITCH CHECK

Erosion log, silt berm, silt dike, rock check dam

Placed in ditches immediately upon completion of ditch grading to reduce velocity of runoff in ditch. For existing ditches, place prior to start of construction disturbances. M-208 NA NA

Storm Drain Inlet Protection In

Paved Roadways (Type 1, 2 and 3 as shown on M-208-1, sheet 5 of 11)

Manufactured storm drain inlet protection placed prior to construction disturbances as detailed in M-208-1, to protect existing inlets or immediately upon completion of new inlets to prevent sediment from entering the inlet throughout construction. M-208 X X

Storm Drain Inlet Protection In

Native Seed Areas (M-604 Standard

Inlets Type C and D)

Erosion logs or aggregate bags placed around inlet grate to prevent sediment from entering inlet. Place prior to construction disturbances to protect existing inlets or immediately upon completion of new inlets. M-208 X X

CULVERT INLET/OUTLET PROTECTION

Erosion logs, aggregate bags

Placed at mouth of culvert inlets and over top of culvert at inlet and outlet where disturbance may be occurring adjacent to pipe to prevent sediment laden water from entering pipe or drainage. Place prior to start of construction disturbances.

M-208 X X

TYPE C, TYPE D AND TYPE 13

PROTECTION

Erosion logs, aggregate bags, erosion bales

Placed around inlet grate or slope and ditch paving to prevent sediment from entering inlet. Place prior to start of construction disturbances.

M-208 X X

STOCKPILE PROTECTION

Temporary berm, erosion logs, aggregate bags*

Placed within specified distance, in accordance with subsection 208.06, from toe to contain sediment around stockpile. *Aggregate bags are easily moved and replaced for access during the work day. Place prior to start of stockpile, increase control as stock pile increases size.

M-208 X X

TOE OF FILL PROTECTION

Erosion logs, temporary berm, silt fence, topsoil windrow*

Place prior to slope/embankment work to capture sediment and protect and delineate undisturbed areas. *Can be used to stockpile topsoil for salvage. M-208 NA NA

PERIMETER CONTROL

Erosion logs, silt fence, temporary berm, topsoil windrow*

Placed prior to construction commencing to address potential run-on water from off site, and to divert around disturbed area. *Can be used to stockpile topsoil for salvage. M-208 NA NA

SEDIMENT CONTROL/

SLOPE CONTROL

Silt fence, erosion logs

Placed on the contour of a slope to contain and slow down construction runoff. Place prior to start of construction disturbances.

M-208 X X

TEMPORARY SEDIMENT TRAP

Used to capture sediment laden runoff from disturbed areas < 5 acres during construction. Place prior to start of construction disturbances.

M-208 NA NA

EMBANKMENT PROTECTION OR

TEMPORARY SLOPE DRAIN

Placed as a conduit or chute to drain runoff down slope and to prevent erosion of slope.

M-208 NA NA

OUTLET PROTECTION

Riprap, or approved other

Material placed as energy dissipater to prevent erosion at outlet structure. M-

601-

NA NA

CONCRETE WASHOUT

In-ground or fabricated

Construction control, used for waste management of concrete and concrete equipment cleaning. Place prior to start of concrete activities.

M-208 NA NA

VEHICLE TRACKING PAD

Source control, placed to prevent tracking of sediment from disturbed area to offsite surface. Place prior to start of construction disturbances.

M-208 X X

SWEEPING

Source control, used to remove sediment tracked onto paved surfaces and to prevent sediment from entering drainage system.

Sweep daily and at the end of the construction shift as needed. Kick brooms shall not be permitted.

X X

Engineered SEDIMENT BASIN

Constructed early in project, prior to storm sewer/ditches and in accordance with 208.05(p) to capture storm flow. Outlet structure and/or outfall shall be modified for temporary sediment control using an approved non-standard detail.

X NA NA

DEWATERING

(Contractor is responsible for obtaining a permit from Colorado

Department of Health and

Environment.)

Shall be done in such a manner to prevent potential pollutants from entering state waters.

X

If

Requi-red

TEMPORARY STREAM CROSSING

Constructed over stream or drainage to prevent discharge of pollutants from construction equipment into water.

CLEAN WATER DIVERSION

Placed to divert clean surface or ground water around disturbance area to prevent it from mixing with construction runoff.

OTHER

NON-STRUCTURAL BMPs/Control Measures that may be potentially used on the project for erosion and sediment control; practices may include, but are not limited to:

Erosion control devices are used to limit the amount of soil loss on site. Sediment control devices are designed to capture sediment on the project site. Construction controls are BMPs/Control Measures related to construction access and staging. BMP/Control Measure locations are indicated on the SWMP Site Map.

* Use of vegetative buffer strip requirements. The CDPHE Water Quality Control Division Technical Memorandum dated August 27, 2015 clarifies the requirements for utilization of existing vegetation as a buffer type of sediment control measure, while maintaining compliance with the CDPS permit for Stormwater Discharges Associated with Construction Activity – CDPS Permit No. COR0300000. In general, the division does not recommend that vegetated buffers be implemented as a sediment removal control measure for runoff from disturbed areas at construction sites, unless implemented as a “finishing” component of a treatment train comprised of additional, adequate up-gradient control measures. The entire memorandum can be found at: https://www.colorado.gov/pacific/sites/default/files/Vegetative%20Buffer%20Memo.pdf

APPLICATION,

BMP/CONTROL MEASURE

NARRATIVE

M -S

TA

N

D A

R D o r

X fo r

N O

N -S

TA

N

D A

U

S E O

N S

P /C

O N

TR

O

L M

E A

S U

E L

O C

A

TE

D B

Y S

W

M

IN

S

TR

A

BMP/CONTROL MEASURE

IMPLEMENTATION PHASE

IN

IT

IA

L

C O

N S

TR

U C

TI

TI

V

Y

(C

N

TR

O L

M E A

S U

TA

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P R

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C O

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* VEGETATIVE BUFFER STRIP

Fence (plastic)

Filter sediment laden runoff from disturbance area. Area to be identified on SWMP prior to construction starting.

X

X X

GRADING APPLICATIONS

(LANDFORM)

Existing or created landforms may be used as a BMP/Control Measure if they prevent sediment from entering or leaving the disturbance area. If a landform directs flow of water to a concentrated outfall point, the outfall point shall be protected to prevent erosion. Area to be identified on SWMP prior to construction starting.

M-208

NA NA

https://www.colorado.gov/pacific/sites/default/files/Vegetative%20Buffer%20Memo.pdf

TOPSOIL MANAGEMENT

STOCKPILE/SALVAGE

Windrow or stockpile

Prior to any site disturbance work commencing, existing topsoil shall be scraped to a depth of 4 inches, and placed in stockpiles or windrows. Upon completion of slope work/final grading (less 4 inches), topsoil shall be evenly distributed over embankment to a depth of 4 inches.

M-208

SURFACE ROUGHENING / GRADING

TECHNIQUES

Temporary stabilization of disturbance and to minimize wind and erosion.

X

SEEDING (TEMPORARY)

Temporary stabilization used for over wintering of disturbance or used to control erosion for areas scheduled for future construction.

NA

BONDED FIBER MATRIX and Spray-on Mulch Blanket (hydraulic applied mulch

Not to be used in areas of concentrated flows, i.e. ditch lines. To be for either Interim or Permanent Stabilization placed as a surface cover for erosion control. May be used as surface cover when work is temporarily halted and as approved by the Engineer for stockpiles.

Straw or Hay MULCH/MULCH

TACKIFIER

Interim or Permanent Stabilization placed as a surface cover for erosion control and or seeding establishment. To be installed as

Interim Stabilization as a surface cover when work is temporarily halted and as approved by the Engineer

SPRAY-ON MULCH BLANKET (Not to be used in areas of concentrated flows, i.e. ditch lines.)

Temporary or Final Stabilization placed as a surface cover for erosion control and or seeding establishment. To be installed as temporary surface cover when work is temporarily halted and as approved by the Engineer

SEEDING PERMANENT (NATIVE)

Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas.

SOIL RETENTION BLANKET (SRB)

Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas.

M-216

TURF REINFORCEMENT MAT (TRM)

Final Stabilization of disturbance and to reduce runoff and control erosion on disturbed areas. Placed in channels or on slopes for erosion control, channel liner and seeding establishment.

M-216

OTHER

9. TABULATION OF STORMWATER QUANTITIES

A. BMP/Control Measure sediment removal and disposal shall be paid for as: 208 Removal and

Disposal of Sediment (Equipment) and 208 Removal and Disposal of Sediment (Labor). All other

BMP/Control Measure maintenance shall be included in the cost of the BMP/Control Measure.

Pay Item Description Pay

Unit

Initial

Const.

Interim

Const.

Permanent

Stabilization

*Total

Quantity

208-00035 Aggregate Bag LF 260 260

208-00075 Pre-fabricated Vehicle Tracking Pad Each 1 1

208-00103 Removal and Disposal of Sediment

(Labor)

Hour 4 4

Pay Item Description Pay

Unit

Initial

Const.

Interim

Const.

Permanent

Stabilization

*Total

Quantity

208-00106 Sweeping (Sediment Removal) Hour 4 4

208-00107 Removal of Trash Hour 2 2

*It is anticipated that additional BMPs/Control Measures and BMP/Control Measure quantities not shown on the

SWMP Site Maps shall be required on the project for unforeseen conditions and replacement of items that are beyond their useful service life, see subsection 208.03 and 208.04. Quantities for all BMPs/Control Measures shown above are estimated, and have been increased for unforeseen conditions and normal BMP/Control Measure life expectancy. Quantities shall be adjusted according to the conditions encountered in the field as directed and approved by the Engineer. Payment shall be for the actual work completed and material used.

**Pay Item 208-00071 is included for anticipated maintenance of vehicle tracking pads based on the service life of the BMP in the field. The use of the material shall be directed and approved by the Engineer.

10. BIOLOGIC IMPACTS and DEWATERING

A. ENVIRONMENTAL IMPACTS:

1. Wetland Impacts: NO

2. Stream Impacts: NO

3. Threatened and Endangered Species: None

4. DEWATERING: Not Anticipated

11. Notes

1. EMC (or SWMP Administrator for Construction or Erosion Control Inspector) is included in the cost of the work.

2 SWMP Site Maps and Project Plan Title Sheet

2 S ite M aps

CDOT Region 3 A-Basin Tank Installation

Storm Water Management Plan Notebook

This Storm Water Management Plan Notebook includes site specific documents and examples to assist with implementation of the Plan.

The sample documents are based on CDOT’s current knowledge of the expectations of CDPHE, but have not been reviewed or approved by CDPHE

A-Basin SWMP Figure

Legend

70 ft

N

N

= Limit of Disturbed Area (0.58 acres)

= Aggregate Bags

= Vehicle Tracking Pad

AG

AG

AG

AG

AG

AG

AG

AG AG AG

FLOW

DIRECTION

hagertt Rectangle hagertt Oval hagertt Rectangle hagertt Oval hagertt Line

3 Specifications

3 S pecifications

4 CDOT Standard Plans

4.1 M-208-1, M-216-1 and M-615-1

4 S tandard P lans

NOTES:

NOTES:EXCEPT AT THE OPENING.

INSTALLED AROUND THE CONCRETE WASHOUT STRUCTURE,

A FENCE (PLASTIC) CONFORMING TO SECTION 607 SHALL BE

SUBSECTION 630.02.

AT LEAST 3 INCHES HIGH AND CONFORM TO

THE CONCRETE WASHOUT SIGN SHALL HAVE LETTERS

1.

2.

3.

4.

1.

2.

3.

AGGREGATE SHALL CONFORM TO SUBSECTION 208.02 (m).

SHALL BE INCLUDED IN THE COST OF WORK AND NOT PAID FOR SEPARATELY.

ALL MATERIALS AND LABOR TO COMPLETE THE CONCRETE WASHOUT STRUCTURE

SHALL BE INCLUDED IN THE COST OF WORK AND NOT PAID FOR SEPARATELY.

ALL MATERIALS AND LABOR TO COMPLETE THE VEHICLE TRACKING PAD4.

5. THE PAY ITEM NUMBER FOR CONCRETE WASHOUT STRUCTURE (EACH) IS 208-00045.

CONCRETE WASHOUT STRUCTURE

5. THE PAY ITEM NUMBER FOR VEHICLE TRACKING PAD (EACH) IS 208-00070.

VEHICLE TRACKING PAD

GEOTEXTILE SHALL CONFORM TO SUBSECTION 712.08.

AND NOT PAID FOR SEPARATELY.

CURB AND GUTTER SHALL BE INCLUDED IN THE COST OF WORK

OF WATER THRU STRUCTURE. PROTECTION OF THE

CROSSES THE ENTRANCE FROM DAMAGE, WHILE NOT BLOCKING FLOW

THE CONTRACTOR SHALL PROTECT CURB AND GUTTER THAT

BE IN ACCORDANCE WITH 208.02 (k).

ABOVE GROUND WATER. IF NOT, THE BOTTOM OF EXCAVATION SHALL

THE BOTTOM OF EXCAVATION SHALL BE A MINIMUM OF FIVE FEET

EXCAVATED AND

LIMIT OF BERM

PLAN VIEW

AA

TRUCK ACCESS

CONTAINMENT AREA

3:1

RAMP

EXISTING

SECTION A-A

SIGN

3' MIN.

GROUND

(PLASTIC)

FENCE

OPERATION.

SHALL EXTEND FULL WIDTH

OF INGRESS AND EGRESS

PLAN VIEW

B

B

EXISTING

GROUND

EXISTING

PAVEMENT

GROUND

EXISTING

EXISTING

PAVEMENT

MIN.

GEOTEXTILE

(DEPTH VARIES)

ELEVATION SECTION

GROUND

EXISTING

(CLASS 2)

EROSION CONTROL

2:1 (TYP.)

TEMPORARY BERM

(SEE M-216-1, SHEET 1)

ANCHOR TRENCH

AREA

EXCAVATED

AS NEEDED (SEE NOTE 4)

IMPERMEABLE SYNTHETIC LINER

FENCE (PLASTIC)

(SEE NOTE 3)

CONTROL (CLASS 2)

GEOTEXTILE EROSION

(SEE NOTE 1)

AGGREGATE

2/3 OF VOLUME AREA

MAXIMUM STORAGE IS

9 FT. MIN.

MIN.

4 FT.

MIN.

15 FT.

MIN.

24 IN.

18 IN. MIN.

MIN.

5 FT.

MIN.

18 IN.

10 FT.

10 FT.

MIN.

12 FT.

70 FT. MIN.

6 IN.

12 FT. MIN.

MIN.

6 IN.

SECTION B-B

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 1 of 11

Designer Initials: DK

Last Modification Date: 05/16/24

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Construction Engineering Services Issued by the Project Development Branch: July 31, 2019DK

05/16/24

Vehicle Tracking Pad Note 1.

Structure Notes 1 and 4, and

Revised Concrete Washout

TYPICAL STAKE INSTALLATION

SECTION A-A

EROSION LOG

PLAN VIEW

FLOW

TO EACH OTHER

(TYP.)

FLOW FLOW

FL

O

W

FL

O W

FLOW

INLET

STAKES

SECTION B-B

FLOW

A A

B B

APPROXIMATELY 90°

PLAN VIEW

EROSION LOG FILTER AT DROP INLET

NOTE:

SECTION C-C

EROSION LOG CULVERT INLET PROTECTION

EROSION LOG

FLOW

C

EROSION LOG CULVERT OUTLET PROTECTION

C

PLAN VIEW

FLOW

FLOW

1.5 X DIA. OF PIPE

MIN. DISTANCE

EDGE OF THE CONCRETE APRON.

LOCATE EROSION LOGS AT THE OUTSIDE

208-00012

208-00002

208-00013

208-00007

208-00008

208-00009

EROSION LOGS PAY ITEMS

NUMBER DESCRIPTION

(SEDIMENT CONTROL LOG) APPLICATIONS

EROSION LOG

(NOT ALL LOGS SHOWN)

EROSION LOG

ENDS OR JOINTS

AT ALL EROSION LOG

USE TWO WOOD STAKES

CONTINUOUS SECTION

END TO FORM

TIGHTLY ABUT

ENDS OR JOINTS

AT ALL EROSION LOG

USE TWO WOOD STAKES

EROSION LOG ENDS OR JOINTS (TYP.)

USE TWO WOOD STAKES AT ALL

EROSION LOG

SECTION

TO FORM CONTINUOUS

TIGHTLY ABUT END

OVERLAP JOINING DETAIL

J-HOOK JOINING DETAIL

LOG

EROSION

FLOW

JOINING EROSION LOG APPLICATIONS

JOINING EROSION LOG APPLICATIONS.

FOR JOINING LOGS IN OTHER SITUATIONS, SEE THE

EROSION LOG ENDS SHALL BE TIGHTLY ABUTTING.

FLOW

1.

THE COST OF THE EROSION LOGS.

STAKES SHALL BE INCLUDED IN

NOTE

THE LENGTH OF THE EROSION LOG

ORIENTATION THROUGHOUT

AND CONTINUE ALTERNATE

USE A STAKE EVERY 24IN

208-00022

208-00023

208-00024

NOTE:

TOP OF EROSION LOG MORE THAN 2 IN.

TOP OF STAKE SHALL NOT EXTEND PAST

REQUIRING PROTECTION

WETLANDS OR FEATURES

WITH NO GAPS (TYP.)

BE TIGHTLY ABUTTED

EROSION LOGS SHALL

NOTE:

INTO GRADE 2 IN.

TRENCH LOG

OVERLAP

12 IN. MIN.

24 IN.

STAKE EVERY

USE A WOOD MIN.

12 IN.

24 IN.

STAKE EVERY

USE A WOOD

48 IN. MAX.

24 IN.

(TYP.)

INTO GRADE 2 IN.

TRENCH LOGS

(TYP.)

INTO GRADE 2 IN.

TRENCH LOGS

TYPE 1 (9 IN.)

TYPE 1 (12 IN.)

TYPE 1 (20 IN.)

TYPE 2 (8 IN.)

TYPE 2 (12 IN.)

TYPE 2 (18 IN.)

TYPE 3 (9 IN.)

TYPE 3 (12 IN.)

TYPE 3 (20 IN.)

THE TOPS OF EROSION LOGS.

EXTEND MORE THAN 2 INCHES ABOVE

THE TOPS OF ALL STAKES SHALL NOT

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 2 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

ABUTTED WITH NO GAPS.

NOTE: EROSION LOGS SHALL BE TIGHTLY

05/16/24

Inlet" plan view. Revised title.

dimension note to the "... Drop

Added "Erosion Logs...No Gaps"DK

05/16/24

Construction Engineering Services DK

FLOW TO EACH OTHER

(TYP.)

STAKES

APPROXIMATELY 90°

SECTION A-A

ISOMETRIC VIEW

F L O

W

F L O

W

FLOW

SECTION B-B

SILT FENCE

ISOMETRIC VIEW

TOE OF SLOPE PROTECTION APPLICATIONS

TOE OF SLOPE TO PROVIDE STORAGE CAPACITY.

SILT FENCE USED AT TOE OF SLOPE SHALL BE PLACED 5 TO 10 FEET BEYOND

1.

2.

3.

BEYOND TOE OF SLOPE TO PROVIDE STORAGE CAPACITY.

EROSION LOGS USED AT TOE OF SLOPE SHALL BE PLACED 5 TO 10 FEET 1.

2.

NOTES:

UP SLOPE.

EROSION LOGS SHALL BE PLACED ON THE CONTOUR WITH ENDS FLARED

SILT FENCE TOE OF SLOPE PROTECTION

B

EROSION LOG TOE OF SLOPE PROTECTION

3.

4.

NOTES

TURNING UPSLOPE IS 150 FEET.

THE MAXIMUM LENGTH OF EROSION LOGS OR SILT FENCES WITHOUT A FLARED END

NOTE: THE PAY ITEM NUMBER FOR SILT FENCE (LF) IS 208-00020.

FLOW

B

SILT FENCE POST

SEE SHEET 2 OF 11 FOR JOINING LOGS DETAIL.

IS 100 FEET.

PER 100 FEET OF SILT FENCE LENGTH; MAXIMUM SLOPE LENGTH BEHIND BARRIER

SILT FENCE SHALL HAVE A MAXIMUM DRAINAGE AREA OF ONE-QUARTER ACRE

SILT FENCE SHALL BE PLACED PARALLEL TO THE CONTOUR WITH ENDS FLARED UP SLOPE.

NOTE:

THE TOPS OF EROSION LOGS.

EXTEND MORE THAN 2 INCHES ABOVE

THE TOPS OF ALL STAKES SHALL NOT

MIN.

46 IN.

A

A

(TYP.)

INTO GRADE 2 IN.

TRENCH LOG

5 FT. TO 10 FT.

MIN.

24 IN.

MIN.

18 IN.

TRENCH AND FIRMLY ATTACHED TO POST

12 IN. INTO (6 IN. SIDEWALL x 6 IN. BOTTOM)

SILT FENCE - GEOTEXTILE BURIED

TRENCH

6 IN. x 6 IN.

5 FT. TO 10 FT.

208-00012

208-00002

208-00013

208-00007

208-00008

208-00009

EROSION LOGS PAY ITEMS

NUMBER DESCRIPTION

208-00022

208-00023

208-00024

TYPE 1 (9 IN.)

TYPE 1 (12 IN.)

TYPE 1 (20 IN.)

TYPE 2 (8 IN.)

TYPE 2 (12 IN.)

TYPE 2 (18 IN.)

TYPE 3 (9 IN.)

TYPE 3 (12 IN.)

TYPE 3 (20 IN.)

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 3 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

2 FT. MIN.

4 FT. MIN. 5 FT. MIN. 4 FT. MIN.

2 FT. MIN.

PLAN VIEW

FLOW FLOW

FL

O

W

FL

O W

FLOW

INLET

SECTION A-A

FLOW

A A

PLAN VIEW

INLET

UPSTREAM OF

AGGREGATE BAGS

NUMBER OF

WITH NO GAPS (TYP.)

BE TIGHTLY ABUTTED

AGGREGATE BAGS SHALL

AGGREGATE BAGS AT DROP INLET

OF THE CONCRETE APRON.

AT THE OUTSIDE EDGE

LOCATE AGGREGATE BAGSNOTE:

AGGREGATE BAG APPLICATIONS

NOTE: THE PAY ITEM NUMBER FOR AGGREGATE BAG (LF) IS 208-00035

FLOW CURB INLET

CURB

GUTTER

FLOW

AGGREGATE BAGAGGREGATE BAG

MANHOLE

AGGREGATE BAGS AT STORM DRAIN INLET (TYPE I)

NOTE:

EDGE OF ROADWAY

EDGE OF TRAVELED WAY

FACE OF CURB

THE ADJACENT CURB

ALWAYS BE 1IN BELOW THE HEIGHT OF

THE TOPS OF AGGREGATE BAGS SHALL

TO THE FACE OF CURB.

FROM THE EDGE OF THE TRAVELED WAY (INCLUDING CONDITIONS DURING DETOURS)

USE AGGREGATE BAGS ONLY WHEN THERE IS A MINIMUM CLEARANCE OF 3 FEET

FT.

OF INLET

LENGTH (L)

0 - 5

6 - 10

L > 10

FROM THE INLET OPENING (TYP.)

BE PLACED 5 FT. MIN. UPSTREAM

CURB FACE AND SHALL

PLACED TIGHTLY AGAINST

AGGREGATE BAG SHALL BE

5 FT. MIN.

3 FT.

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 4 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

MANHOLE

PLAN VIEW

SECTION A-A

F L

O W

FLOW

OVERFLOW

A

A

STORM DRAIN INLET PROTECTION (TYPE I)

CURB INLET

SECTION B-B

FLOW

OVERFLOW

PLAN VIEW

B

B

CURB

GUTTER

INLET GRATE

LIFTING STRAPS

CURB FILTER

GUTTER

CURB

OVERFLOW

F L

O W

ISOMETRIC VIEW

COVERS INLET GRATE

INLET PROTECTION DEVICE

DEVICE

PROTECTION

INLET

GRATE

INLET

INLET

CURB

GUTTER

AND

CURB

INLET PROTECTION

STORM DRAIN

INLET

CURB

FLOW

FILTERED

NOTES:

1.

2.

CROSS SLOPE

ROADWAY

CROSS SLOPE

ROADWAY

FLOWLINE

PROJECTED

FLOWLINE

PROJECTED

OPENING

OVERFLOW

CONTAINMENT AREA

WITH SEDIMENT AND DEBRIS

INLET PROTECTION DEVICE

WITHOUT STORAGE CAPACITY

INLET PROTECTION DEVICE

STRAPS

LIFTING

CONTAINMENT AREA

WITH SEDIMENT AND DEBRIS

INLET PROTECTION DEVICE

STORM DRAIN INLET PROTECTION TYPES

OF THE INLET.

INLET PROTECTION DEVICE SHALL EXTEND 12 INCHES PAST EACH END

FLOW

FILTERED

STORM DRAIN INLET PROTECTION (TYPE II)

OPTION A

STORM DRAIN INLET PROTECTION (TYPE II)

OPTION B

3.

INLET PROTECTION

STORM DRAIN

STORM DRAIN INLET PROTECTION (TYPE III)

OPTION A

STORM DRAIN INLET PROTECTION (TYPE III)

OPTION B

NOTE: THE PAY ITEM NUMBER FOR STORM DRAIN INLET PROTECTION (TYPE III) (EACH) IS 208-00056.

BAGS AT STORM DRAIN INLET (TYPE I) DETAIL ON SHEET 4 INSTEAD.

FROM THE EDGE OF THE TRAVELED WAY TO THE FACE OF CURB, USE THE AGGREGATE

FOR STORM DRAIN INLET TYPES I AND II, IF THERE IS A MINIMUM CLEARANCE OF 3 FEET

NOTE:

ARE 208-00054 (EACH).

THE PAY ITEM NUMBERS FOR STORM DRAIN INLET PROTECTION (TYPE II)

12 IN. 12 IN.

IN.

IN.

OR 72 IN. X 31 IN.

36 IN. X 31 IN.

VANE INLET GRATE

TRANSITION

2 FT. APRON

OR 72 IN.

36 IN.

AND 208-00058 204 INCHES (EACH).

ARE 208-00051 (LF), 208-00053 84 INCHES (EACH), 208-00057 144 INCHES (EACH),

THE PAY ITEM NUMBERS FOR STORM DRAIN INLET PROTECTION (TYPE I)

OR 72 IN. X 31 IN.

36 IN. X 31 IN.

VANE INLET GRATE

OR 72 IN.

36 IN.

TRANSITION

2 FT. APRON

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 5 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

4 FT.

FRONT VIEW

POINT A

POINT B

PLAN VIEW

BERM SECTION

SILT BERM

FLOW

FLOW

DRAINAGE DITCH APPLICATIONS

PLAN VIEW

EROSION LOGS

POINT A

POINT B

FL

O

W

TO EACH OTHER

APPROXIMATELY 90°

STAKES

(TYP.)

A

A

BLANKET

SOIL RETENTION

OF SPIKES PER SECTION OF SILT BERM.)

SPIKES (USE A MINIMUM OF 3 SETS

BLANKET

SOIL RETENTION

FILL AND COMPACT TRENCH.

SECTIONS OF THE SILT BERM SHALL BE OVERLAPPED WITH NO GAPS.

1.

2.

3.

4.

DETAIL ON SHEET 11 OF 11.

FOR SLOPE AND CHANNEL SPACING SEE THE "SECTION VIEW ALONG DITCH FLOWLINE"

POINT A

POINT B

DOWNSTREAM UPSTREAM

NOTES:

MINIMUM 4 NAILS PER SEGMENT (UPSTREAM).

MINIMUM 2 NAILS PER SEGMENT (DOWNSTREAM).

1.

2.

5.

NOTES

FLOWBLANKET

RETENTION

SOIL

ALONG EDGE

STAPLES 1 FOOT O.C.

SECURE BLANET WITH

SILT BERM (2) SECTION VIEW

THE PAY ITEM NUMBER FOR SILT BERM (LF) IS 208-00004.6.

POINT B

POINT A POINT A

ELEVATION

NOTES:

SECTION A-A

RELEASE

OVERFLOW

OVERFLOW

SHALL BE HIGHER THAN

ROADWAY ELEVATION

STAPLES PLACED AT 1 FOOT INTERVALS ALONG EDGE.

ANCHOR SOIL RETENTION BLANKET INTO TRENCH WITH 8 INCHES MIN.

FOR DETAILS)

(SEE M-216-1

WITH STAPLES

SECURE BLANKET

POINT A

EROSION LOG INSTALLATION

SILT BERM (1) SECTION VIEW

SILT BERM INSTALLATION

SOIL RETENTION BLANKET SHALL ALWAYS BE REQUIRED.

3. MINIMUM 2 WOOD STAKES PER SEGMENT.

WATER FLOWS OVER THE BERM AND NOT AROUND THE ENDS.

POINT "A" SHALL BE HIGHER THAN POINT "B" TO ENSURE THAT

EROSION LOGS SHALL BE EMBEDDED 2 INCHES INTO THE SOIL.

EROSION LOGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS.

1.

2.

3.

NOTE:

THE TOPS OF EROSION LOGS.

THAN 2 INCHES ABOVE

SHALL NOT EXTEND MORE

THE TOPS OF ALL STAKES

INTO GRADE 2 IN.

TRENCH LOGS

NOTE: POINTS "A" SHALL BE A MINIMUM 4 IN. HIGHER THAN POINT "B".

INTO GRADE 2 IN.

TRENCH LOGS

SHAL BE GRADED IN A PARABOLIC OR TRAPEZOIDAL SHAPE.

V-SHAPED TEMPORARY DITCHES SHALL NOT BE USED. DITCHES

M-216-1 FOR DETAILS)

6 IN. X6 IN. (SEE

ANCHOR TRENCH

4 FT.

2 FT. MIN. (TYP.)

(SEE M-216-1 FOR DETAILS)

ANCHOR TRENCH 6 IN. X 6 IN.

SPIKES 10 - 12 IN. DEEP (TYP.)

SECURE SILT BERM WTTH

HARDWOOD STAKES

1 IN. X 1 IN. X 18 IN. NOMINAL PINE OR

CABLE TIES

UV-STABLE

BLACK 11 IN.

9 IN.

2 IN. OF TOPSOIL

EDGE FLAP WITH

BACKFILL LEADING

ANCHOR TRENCH

6 IN. X 6 IN.

(TRIANGULAR SPACING)

STAPLES 1.5 FT. O.C.

SECURE BLANKET WITH

12 IN.

BRIGHT COMMON

6 IN. NAILS 60D

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 6 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

2:1 OR FLATTER

2:1 OR FLATTER

COMPACTED SOIL

4'-6" MINIMUM

18" MIN.

TEMPORARY SLOPE DRAINS

TEMPORARY BERM

FLOW

TEMPORARY DIVERSION

FLOW

2:1 OR FLATTER

BERM

TEMPORARY

ANCHOR SIZE VARIES ACCORDING TO PIPE SIZE

NOTES:

1.

2.

3.

A DESIGNATED OUTLET.

BERMS SHALL BE USED TO INTERCEPT AND DIVERT DRAINAGE TO

BERMS SHALL NOT BE USED WHERE DRAINAGE AREA EXCEEDS 10 ACRES.

BERM

TEMPORARY

1.

2.

3.

THE PAY ITEM NUMBER FOR TEMPORARY DIVERSION (LF) IS 208-00301.5.

1.

2.

4.

OR AROUND THE PERIMETER OF A DISTURBED AREA.

USE THE TEMPORARY DIVERSION DITCH IMMEDIATELY ABOVE A NEW CUT, FILL SLOPE,

FROM THE OUTSIDE LIMITS OF DISTURBED AREA BOUNDARY.

THE DIVERSION FLOWLINE SHALL ALWAYS BE LOCATED A MINIMUM 10 FEET

BUT SHALL NOT BE SO STEEP AS TO RESULT IN EROSION DUE TO HIGH VELOCITY.

THE GRADIENT ALONG THE FLOW PATH SHALL HAVE A POSITIVE GRADE TO ASSURE DRAINAGE,

TO INTERCEPT RUNOFF AND DIRECT IT TO A STABLE OUTLET OR SEDIMENT TRAP.

TEMPORARY DIVERSION DITCHES SHALL BE CONSTRUCTED ACROSS THE SLOPE

3.

SHALL ALWAYS BE REQUIRED

GEOTEXTILE EROSION CONTROL (CLASS 2)

4.

PERPENDICULAR DISCHARGE TO A CHANNEL SHALL NOT BE ACCEPTABLE.

THE OUTLET SHALL BE ALIGNED WITH THE FLOW DIRECTION OF THE EXISTING GRADE.

5.

THE GRADE AROUND THE INLET TO THE PIPE SHALL BE COMPACTED.

AND SPECIFICATION 506 "RIPRAP" FOR REQUIREMENTS)

FOR MIN. HORIZONTAL LAYOUT AND THICKNESS,

RIPRAP OUTLET PROTECTION (SEE M-601-12

6. THE PAY ITEM NUMBER FOR TEMPORARY BERM (LF) IS 208-00300.

BETWEEN THEM ABOVE AND ACROSS THE PIPE'S WIDTH.

TO SECURE THE PIPE, DRIVE STAKES INTO GROUND, THEN TIE A 12 GUAGE WIRE

GRADING APPLICATIONS

4.

AND RECEIVE AT A MINIMUM HEAVY EQUIPMENT WHEEL ROLLED COMPACTION.

BERMS SHALL BE CONSTRUCTED OUT OF ACCEPTABLE MATERIAL THAT CAN BE COMPACTED

THE PAY ITEM NUMBER FOR TEMPORARY SLOPE DRAINS (LF) IS 208-00060.

5.

6.

IN NO CIRCUMSTANCE CONSTRUCTED OUT OF SALVAGED TOPSOIL.

TEMPORARY BERMS SHALL BE CONSTRUCTED OUT OF EMBANKMENT (SUBSOIL) AND

OR AS SHOWN ON THE PLANS.

RIPRAP SIZE D = 6 IN.

MIN.

18 IN.

4 FT. - 6 IN. MIN.

10 FT. - 0 IN. MIN.

4 FT. - 6 IN. MIN.

18 IN. MIN.

12 IN.

2 FT. MAX.

SEE SHEET 3 OF 11 FOR DETAILS.

INSTALL TOE OF SLOPE CONTOL MEASURES.

FOR BERMS TALLER THAN 2 FT.,

2:1 OR FLATTER AND A MINIMUM BASE WIDTH OF 4 FT. -6 IN.

BERMS SHALL HAVE A HEIGHT OF 18 INCHES, SIDE SLOPES OF

4 FT. - 6 IN. MIN.

18 IN. MIN.

(SEE NOTE 2)

PINE OR HARDWOOD STAKES

2 IN. X 2 IN. (NOMINAL) X 30 IN.

12 IN. MIN. DIAMETER PIPE

FT.

MAX.

CONSTRUCTED OUT OF SALVAGED TOPSOIL.

DIVERSION BERMS SHALL BE CONSTRUCTED OUT OF EMBANKMENT (SUBSOIL) AND IN NO CIRCUMSTANCE

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 7 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

SILT FENCE

FLOW

JOINING SECTION DETAIL (PLAN VIEW)

END SECTION DETAIL (PLAN VIEW)

FLOW

GRADE

T-POST SAFETY CAP

T-POST SAFETY CAP

SIDE VIEW

SILT FENCE (REINFORCED)

FLOW

ELEVATION VIEW

NOTES:

1.

3.

BACKFILL

COMPACT

1.

2.

NOTES:

3. THE PAY ITEM NUMBER FOR SILT FENCE (LF) IS 208-00020.

1.

OF SEDIMENT AT JOINT.

GAPS TO PREVENT POTENTIAL FLOW-THROUGH

POSTS SHALL BE TIGHTLY ABUTTED WITH NO

NOTES:

1.

6 HEAVY DUTY WIRE STAPLES AT LEAST 1 INCH LONG.

POST ONE FULL TURN, THEN SECURED ALONG THE POST WITH

BY WRAPPING APPROX. 6 INCHES OF EACH END AROUND A WOODEN

THE ENDS OF THE SILT FENCE FABRIC SHALL BE JOINED TOGETHER

POST "B"

FABRIC "A"

GEOTEXTILE

FABRIC "B"

GEOTEXTILE

POST "A"

WIRE STAPLES AT LEAST 1 INCH LONG.

THEN SECURED ALONG THE POST WITH 6 HEAVY DUTY

APPROX. 6 INCHES AROUND A WOODEN POST ONE FULL TURN,

THE END OF THE SILT FENCE FABRIC SHALL BE WRAPPED

POSTS (TYP.)

STAPLED TO

GEOTEXTILE

IN TRENCH

ANCHORED

GEOTEXTILE

GEOTEXTILE FABRIC

POST (TYP.)

SILT FENCE APPLICATIONS

SECTION A-A

A

A

4.

2.

4. THE PAY ITEM NUMBER FOR SILT FENCE (REINFORCED) (LF) IS 208-00021.

SILT FENCES SHALL NOT BE USED FOR CHECK DAMS.

WIRE TIES (MINIMUM 3 PER POST)

ATTACH WIRE PANEL TO POST WITH

ALONG THE POST WITH WIRE TIES (MINIMUM 3 PER POST, AT THE TOP, MIDDLE, AND BOTTOM).

APPROXIMATELY 6 INCHES OF EACH END AROUND A STEEL T-POST, THEN SECURED

THE ENDS OF THE SILT FENCE FABRIC SHALL BE JOINED TOGETHER BY WRAPPING

2.

OF SEDIMENT AT JOINT.

POSTS SHALL BE TIGHTLY ABUTTED WITH NO GAPS TO PREVENT POTENTIAL FLOW-THROUGH

AND AT LEAST 1 INCH LONG.

MORE STAPLES PER POST. STAPLES SHALL BE HEAVY DUTY WIRE

GEOTEXTILE SHALL BE ATTACHED TO WOOD POSTS WITH THREE OR

MAXIMUM MESH SPACING 6 IN.

14-GUAGE WELDED WIRE FENCING.

14-GUAGE WELDED WIRE FENCING. MAXIMUM MESH SPACING 6 IN.

GEOTEXTILE AND FENCE - BURIED 12IN TOTAL IN TRENCH

6 IN. X 6 IN.

TRENCH

MAX.

10 FT.

MIN.

24 IN.

MIN.

24 IN.

MIN.

46 IN.

MIN.

18 IN.

TO POST

AND FIRMLY ATTACHED

12 IN. BURIED IN TRENCH

GEOTEXTILE-

TRENCH

6 IN. X 6 IN.

8 FT.- 0 IN. MAXIMUM

66 IN. STEEL T-POST

FOR THE FIRST 8 IN. ABOVE GRADE.

DO NOT INSTALL WIRE TIES

CABLE TIES 12 IN. O.C. (TYP.)

OR 11 IN. UV-STABLE NYLON

TO PANEL WITH WIRE TIES

ATTACH SILT FENCE FABRIC

WOOD POST SHALL BE INSTALLED PER 208.02 (b).

THE ENDS SHALL BE FLARED UP SLOPE (MINIMUM ELEVATION GAIN OF 18 IN.).

THE SILT FENCE SHALL BE PLACED ON THE CONTOUR (AT THE SAME ELEVATION Î6 IN.).

NOTE:

6 IN.

36 IN.

IN.

66 IN. STEEL T-POST

WIRE TIES OR 11 IN. UV-STABLE NYLON CABLE TIES (TYP.)

GEOTEXTILE - ATTACHED TO WIRE FABRIC WITH

6 IN. X 6 IN. TRENCH

24 IN.

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 8 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

05/16/24

Construction Engineering Services DK

05/16/24 Silt Fence (Reinforced) Note 1.

Revised Silt Fence Note 2 and

SECTION B-B

WEIR LENGTH TABLE

SECTION A-A

A A

PLAN VIEW

B

BTHE LENGTH TO WIDTH RATIO IS 2:1

BOTTOM

LENGTH

W

ID

T H

W

VARIES

WEIR LENGTH (X)

WEIR INVERT2:1

SIDE SLOPE 2:1 OR FLATTER

2:1 OR FLATTER

FLAT BOTTOM

2:1

NOTES

SEDIMENT TRAP

(ACRES)

DRAINAGE AREA

(FEET)

WEIR LENGTH

THE MAXIMUM DRAINAGE AREA IS 5 ACRES.1.

THE MAXIMUM STRUCTURE LIFE IS 2 YEARS.2.

THE STORAGE AREA IS 1800 CUBIC FEET PER ACRE.3.

4.

5.

6.

MEASURED ON THE DOWNSTREAM SIDE.

THE MAXIMUM EMBANKMENT HEIGHT SHALL BE 5 FT.

SITE CONDITIONS WHEN APPROVED BY THE ENGINEER.

THE LENGTH/WIDTH RATIO MAY BE ADJUSTED TO MEET

FLOW

OUTLET

COMPACTED BACKFILL

NATIVE SOIL OR

(Q)

INLET FLOW FLATTER

2:1 OR

(X)

WEIR LENGTH

(CLASS 1)

CONTROL

EROSION

GEOTEXTILE

(CLASS 1)

GEOTEXTILE EROSION CONTROL

7.

THE ENGINEER.

SEDIMENT TRAP DESIGN SHALL BE APPROVED BY

EQUAL TO THE WEIR LENGTH (X).

WIDTH (W) OF SEDIMENT TRAP IS APPROXIMATELY

8.

THE PAY ITEM NUMBER FOR SEDIMENT TRAP (EACH) IS 208-00033.9.

FLOW

DEPENDENT ON SITE CONDITIONS.

DISCHARGES. THE LENGTH IS

TO ACCOMMODATE OVERFLOW

NON-ERODIBLE CONDITIONS

FLOW

THE DOWN GRADE FROM WEIR SHALL BE STABLE AND NON-ERODIABLE.

3.5 FT. MAX.

4 FT. MIN.

18 IN. MIN.

OVERFLOW

18 IN. (MIN.)

D = 12 IN.

5 FT.

IN

(M

.) 12

. (M

IN

18 IN. (MIN.)

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 9 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

05/16/24

05/16/24 Revised General Note 9.

TWINE OR WIRE

FL

OW

FL

OW

WOOD STAKE (TYP.)

PIPE END SECTION

TOE OF FILL

END EROSION BALES TO BE

KEYED INTO FILL SLOPE

PLAN VIEW

EROSION BALE CULVERT INLET PROTECTION

FLOW

EROSION BALES

WOOD STAKES

PLAN VIEW

WITH GRATE

DROP INLET

B

FLOW FILTERED FLOW

TWINE OR WIRE

WOOD STAKE (TYP.)

EROSION BALE APPLICATIONS

NOTES

EROSION BALE TRENCHING AND STAKING

B

4. EROSION BALES CANNOT BE USED FOR CHECK DAMS.

SECTION A-A

BETWEEN EROSION BALES

WEED FREE STRAW

WEDGE LOOSE CERTIFIED

A

A

5.

THE PAY ITEM NUMBER FOR EROSION BALES (WEED FREE) (EA) IS 208-00011.6.

IN A SUMP CONDITION.

EROSION BALE FILTER SHALL BE LOWER THAN BERM ELEVATION OR USED

FLOW

INLET

SECTION B-B

FLOW

EROSION LOG FILTER AT DROP INLET

NOTE:

EDGE OF THE CONCRETE APRON.

LOCATE EROSION BALES AT THE OUTSIDE

AROUND THE ENTIRE OUTSIDE PERIMETER.

SOIL, THIGHTLY ABUTTED WITH NO GAPS, STAKED, AND BACKFILLED

EROSION BALES SHALL BE ENTRENCHED 4 IN. MINIMUM INTO THE

1.

2.

3.

EROSION BALES SHALL BE 18 IN. X 18 IN. X 36 IN.

STAKES SHALL BE WOOD AND SHALL BE 2 IN. X 2 IN. X 30 IN. NOMINAL.

BALE

WI

DTH

EROSI

ON

STEP 1. EXCAVATE THE TRENCH.

MIN.

4 IN.

(TYP.)

WOOD STAKE

4 IN. MIN.

12 IN. MIN.

(TYP.)

INTO GRADE 2 IN.

TRENCH LOGS

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 10 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

POINT C

POINT A

POINT B

TYPICAL SECTION VIEW

* * POINT A

POINT C

L VARIES

OR DITCH

GEOTEXTILE

EROSION CONTROL

(CLASS 2)

FL

L

FLOW

SECTION VIEW ALONG DITCH FLOWLINE

SUBEXCAVATE

RIPRAP

DITCH

2:1 OR FLATTER

GEOTEXTILE

EROSION CONTROL

(CLASS 2)

FLOW

BELOW FLOWLINE

FL

NOTES:

POINT "B" AND BELOW POINTS "C".

POINTS "A" SHALL BE HIGHER THAN

SPACES SHOULD BE USED ON TOP

LARGER ROCKS WITH LARGER VOID

RIPRAP SIZE D = 6IN OR AS SHOWN ON THE PLANS.

OF 6 IN. HIGHER THAN CENTER OF CHECK DAM.

THE ENDS OF RIPRAP CHECK DAM SHALL BE A MINIMUM

1.

3.

4.

5. THE PAY ITEM NUMBER FOR ROCK CHECK DAM (EA) IS 208-00041.

2.

NOT FOR PERMANENT INSTALLATIONS.

FOR USE AS TEMPORARY CHECK DAMS ONLY AND

SECTION A-A

A

A

AND CONFORM TO THE REQUIREMENTS OF SUBSECTION 712.08.

THE GEOTEXTILE EROSION CONTROL SHALL BE CLASS 2

ROCK CHECK DAM

8FT

0% SLOPE

6 IN. MIN.

6 IN. MIN. COVER OVER GEOTEXTILE (TYP).

OF RIPRAP HEIGHT WITH

2TO EXTEND UP

GEOTEXTILE EROSION CONTROL (CLASS 2)

6 IN. MIN. COVER OVER GEOTEXTILE (TYP).

OF RIPRAP HEIGHT WITH

2TO EXTEND UP

GEOTEXTILE EROSION CONTROL (CLASS 2)

24 IN. CREST HEIGHT

NOTE:

SHALL BE INCLUDED IN THE COST OF WORK.

ALL MATERIALS AND LABOR TO COMPLETE THE ROCK CHECK DAM

6 IN. MIN.

24 IN. MIN.

Sheet RevisionsComputer File Information

CommentsDate:Creation Date:

STANDARD PLAN NO.

R-X

R-X

R-X

R-X

07/31/19

M-208-1

CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English Project Sheet Number:

EROSION CONTROL

TEMPORARY

Standard Sheet No. 11 of 11

Designer Initials:

Last Modification Date:

Detailer Initials: LTA

Colorado Department of Transportation

Phone: 303-757-9021 FAX: 303-757-9868

Denver, CO 80204

CDOT HQ, 3rd Floor

2829 West Howard Place

Issued by the Project Development Branch: July 31, 2019

DK

>-f-------- 71-6 11 -------i APPLY SEED AND GENERAL NOTESf-- 3' ----+--- 3' ----+-- 1'-6" -j

ANY REQUIRED SOIL STAPLE 12" O.C.

1. Z SHAPED FOLD TD BE USED ON SLOPECONDITIONERS PRIORTT:----=-=--- SINGLE EVERY 35 FEET MAXIMUM.TD COVERING6"7 BLANKET

2' J_ - COMPACTED SOIL 2. STAPLE CHECK LOCATIONS SHOULD BE AT

WITH BLANKET LEAST 15 FEET FROM THE BOTTOM OF SLOPE.1_:

ANCHOR

TRENCH

COMPACTED SOIL

12" o.c.

12" D.C. CONSECUTIVE ROLL OVERLAP @

STEP 1 STEP 2

TD BE USED WHEREVER ONE ROLLANCHOR TRENCH @ OF BLANKET ENDS AND ANOTHER

BEGINS WITH UPSTREAM BLANKETTD BE USED AT THE BEGINNING AND END OF THE CHANNEL ACROSS IT'S ENTIRE WIDTH.

PLACED ON TOP OF THE BLANKET

ON THE DOWNSTREAM SIDE.

SIDE SEAM OVERLAP @

TD BE USED FOR OVERLAP WHEN

2 WIDTHS OF BLANKET ARE APPLIED

SIDE BY SIDE WITH THE UPHILL

BLANKET PLACED ON TOP OF

THE BLANKET ON THE DOWNHILL SIDE.

1-- 1'-6" --- 3' ---+---- 3' ----I

TYPICAL STAPLE PATTERN APPLY SEED AND ANY REQUIRED

FOR CHANNEL APPLICATION SOIL CONDITIONERS PRIOR TD

COVERING COMPACTED SOIL WITH

SEE SUBSECTION 216.05. BLANKET

6" EDGE

OVERLAP

COMPACTED SOIL

STAPLE 12" D.C.

>7%~~~~'<(~" CHANNEL CHECK SLOT @

TD BE USED AT 30' INTERVALS IN CHANNEL FLDWLINE.

SOIL FILLED TRM APPLICATION : ~ ~ ij_~~'>«~'0/Jj1. PLACE 3" TOPSOIL DR SOIL AMENDED WITH SOIL CONDITIONING. A>7>v7>.Y ~~..........~~~~~~2:.:L~~>iJ

2. APPLY HALF OF THE SPECIFIED SEED AT THE BROADCAST RATE ~ ~~~~~ ~ ~ ~ ~ T-E12'0.C.

AND RAKE IT INTO THE SOIL.

3. INSTALL TRM. 6"

4. PLACE 1" TOPSOIL OR SOIL AMENDED WITH SOIL CONDITIONING I

INTO THE MATRIX TD COVER THE PRODUCT'S THICKNESS. SOIL RETENTION BLANKETS/TURF REINFORCEMENT MATS (TRM)

5. APPLY THE REMAINING HALF OF THE SPECIFIED SEED CHANNEL APPLICATION

AT THE BROADCAST RATE AND RAKE IT INTO THE SOIL. TERMINATION OF CHANNEL ~

IN ACCORDANCE WITH SECTION 216.6. INSTALL SOIL RETENTION BLANKET (CLASS 1).

Com uter File Information Sheet Revisions Colorado Department of Transportation Creation Date: 07/31/19 Date: Comments ~ 2829 West Howard Place Designer Initials: JBK CR-X) COOT HO, 3rd Floor81-----+------------1 Last Modification Date: 07/31/19 CH) ~ Denver, CO 80204

~ Phone: 303-757-9021 FAX: 303-757-9868 Detailer Initials: LT A CR-X) CAD Ver.: MicroStation VB Scale: Not to Scale Units: English ( R-X) ---------------1 Project Development Branch JBK

SOIL RETENTION

COVERING

STANDARD PLAN NO.

M-216-1

Standard Sheet No. 1 of2 Issued by the Project Development Branch: July 31, 2019 Project Sheet Number:

f-- 3'

APPLY SEED AND STAPLE 12" O.C.I 1'-6" 1'-6" 1

ANY REQUIRED SOIL DR EARTH ANCHOR

CONDITIONERS PRIORII I - - - • - - - I

TD COVERINGI l'--i5" I - - - - - - - - - - - - - - - - - - - - .c SINGLE BLANKET6"7 COMPACTED SOIL

WITH BLANKET

3' l_ T i1

6"• ANCHOR

STAPLE 12" O.C.TRENCHLI DR EARTH ANCHOR

COMP ACTED SOIL

/ EARTH ANCHOR (TYP.) 12" O.C. CONSECUTIVE ROLL OVERLAP @

12" O.C.

STEP 1. - . STEP 2

TD BE USED WHEREVER ONE ROLL OF BLANKET ENDSANCHOR TRENCH @

AND ANOTHER BEGINS WITH THE UPHILL BLANKET

TD BE USED AT THE UPSLOPE AND DOWNSLOPE ENDS OF BLANKET ACROSS THE ENTIRE WIDTH PLACED ON TOP OF THE BLANKET ON THE DOWNHILL SIDE.

OF SLOPE UNLESS SLOPE RUNS INTO RECEIVING WATER. (SEE DOWNSLOPE END STAPLE CHECK) .

r-i r-i

6" FOLD DV~ER~L~~{L------

____________________ I

---•---1 STAPLE CHECK ©

TYPICAL STAPLE DR EARTH ANCHOR STAPLE DR

EARTH ANCHORPATTERN FOR SLOPE APPLICATION

SOIL RETENTION BLANKET

IF EARTH ANCHORS ARE NOT SPECIFIED ON (CLASS 1)

THE PLANS,DNLY STAPLES SHALL BE USED. ½ OF SPECIFIED SEED RATE T

SEE SUBSECTION 216.04 1" TOPSOIL DR SOIL AMENDED 6"

WITH SOIL CONDITIONING TD

COVER TRM'S THICKNESS

TURF REINFORCEMENT MAT

(TRM) TERMINATION OF CHANNEL@

36"½ OF SPECIFIED

SEED RATE

3" TOPSOIL DR SOIL SOIL RETENTION

AMENDED WITH BLANKETS/TURF REINFORCEMENT MATS (TRM)SOIL CONDITIONING

SLOPE APPLICATION

STAPLE (TYP.)SOIL FILLED TRM APPLICATION IN ACCORDANCE WITH SECTION 216.

I. PLACE 3" TOPSOIL DR SOIL AMENDED WITH SOIL CONDITIONING.

2. APPLY HALF OF THE SPECIFIED SEED AT THE BROADCAST RATE

r-iEARTH ANCHOR AND RAKE IT INTO THE SOIL.

3. INST ALL TRM.NOTES: I. EARTH ANCHORS WILL BE USED INSTEAD

OF STAPLES WHEN SPECIFIED IN THE PLANS. 4. PLACE 1" TOPSOIL DR SOIL AMENDED WITH SOIL CONDITIONING

INTO THE MATRIX TD COVER THE PRODUCT'S THICKNESS. DOWNSLOPE END STAPLE CHECK2. EARTH ANCHORS SHALL BE PAID FDR SEPERATL Y AS SPECIFIED IN SECTION 216. 5. APPLY THE REMAINING HALF OF THE SPECIFIED SEED TD BE USED WHEN SLOPE RUNS INTO A RECEIVING WATER

AT THE BROADCAST RATE AND RAKE IT INTO THE SOIL. AND CANNOT BE EXTENDED 3 FEET BEYOND SLOPE.

6. INST ALL SOIL RETENTION BLANKET (CLASS 1).

Com uter File Information Sheet Revisions Colorado Department of Transportation Date: Comments 2829 West Howard Place

CR-X) 1-------1--------------1 ~ COOT HO, 3rd Floor CH) ~ Denver, CO 80204

1-------1--------------1 ~ Phone: 303-757-9021 FAX: 303-757-9868

CR-X)

CR-X> --------------1 Project Development Branch JBK

SOIL RETENTION

COVERING

STANDARD PLAN NO.

Creation Date: 07/31/19

M-216-1Designer Initials: JBK

Last Modification Date: 07/31/19 Standard Sheet No. 2 of2 Detailer Initials: LT A

Issued by the Project Development Branch: July 31, 2019 Project Sheet Number:CAD Ver.: MicroStation VB Scale: Not to Scale Units: English

ITEM 507 SLOPE ROLL TD

TYPE 4 DR AND DITCH PAVING MEET SLOPE A

TYPE 6 GUARDRAIL POSTS \ ;; HMA PAVEMENT(SECTION M) (IF REQUIRED) RAIL NORMAL EDGE OF

(LAP PAVEMENT OVER EDGE

CURBING (IF REQUIRED) SHOULDER PAVEMENT

OF END SECTION)

WITH CURB~

~:::::::::::::::::::;::~:::::;: 70° 8"

~~t-~~~~ ~ ~~~~t~1~-

INCREASE THE CURB HEIGHT BEHIND

THE GUARDRAIL TD MATCH THE INLET

SECTION HEIGHT (TYP.). THE COST FDR

INCREASED CURB HEIGHT WILL NOT BE

PAID FOR SEPARATELY BUT WILL BE

--------------+---- 26' ----------,~ INCLUDED IN THE WORK.

TRASH GUARD REQUIRED WHEN

SPECIFIED ON THE PLANS

FLEXIBLE PIPE:

PLASTIC DR MET AL PIPE

(PLASTIC PIPE SHOWN)

THICKNESS

TYPE OF APRON MATERIAL

IN.

TYPE 3 PLAN VIEW SLOPE AND DITCH PAVING (507)

SHOWING DRAINAGE FLOW FROM LEFT DRY RUBBLE 6

TD RIGHT. REVERSE DETAIL WHEN CONCRETE 4

DRAINAGE FLOW IS RIGHT TD LEFT. r/ HMA 4

GROUTED RUBBLE 4

6'-0" RIPRAP (506) 9 (MIN.)

l ~ ~4'-0"~

NORMAL EDGE OF

12" 2" SHOULDER PAVEMENT

WARP EMBANKMENT

TD COVER PIPE

4" MIN.

WARP APRON MATERIAL

AROUND AND OVER OUTLET.

SAME THICKNESS AS t. DITCH SAME THICKNESS AS

SHOULDER PAVEMENT SHOULDER PAVEMENT

I

6" TOE PLATE

6" TOE PLATE

FOR PIPE LENGTH

APRONSEE THE PLANS

SECTION A-A

FOR PLASTIC PIPE

GENERAL NOTES

1. IF THE EMBANKMENT PROTECTOR IS LOCATED IN THE BOTTOM OF A VERTICAL

CURVE, FLARE THE CURB ON EACH SIDE OF THE INLET TD ALLOW FOR FLOW

FROM BOTH DIRECTIONS.

2. DETAILS OF GUARD RAIL INSTALLATIDN ARE SHOWN IN STANDARD PLAN M-606-1.

3. THE END SECTION-TD-PIPE STUB JOINT FDR CORRUGATED METAL…