02370-Erosion and Sedimentation Control (Final) - Klwtd.info

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Key Largo Wastewater Treatment District, Vacuum

Station

Basin

D



Project Manual

02370
-
1



March 2008


Erosion and Sedimentation Control

SECTION 02370


EROSION AND SEDIMENTATION CONTROL



PART 1 GENERAL


1.01

Section Includes


Designing, providing, maintaining

&

removing temporary erosion and sedimentation
controls.


1.02

Related Sections


A.

Section 02230
-

Site Preparation


B.

Section 02240
-

Dewatering


C.

Section 023
15

-


Excavation,

Trenching, and Backfilling


1.03

References


A.

Florida Department of Transportation (FDOT) Standard Specifications for Road
and Bridge Construction and Roadway and Traffic Design Standards, latest
editions:


1.

Index
No. 102
-

Baled Hay or Straw Barriers and Silt Fences

2.

Index No. 103
-

Turbidity Barriers


1.04

Owner’s Instructions / Sequencing


A.

Owner has authority to limit surface area of erodible earth material exposed by
clearing and grubbing, excavation, trenching,

borrow and embankment
operations. Owner also has authority to direct Contractor to provide immediate
permanent or temporary erosion and sediment control measures.


B.

Contractor shall respond to erosion and sediment control maintenance
requirements or imple
ment additional measures to control erosion ordered by
Owner or governing authorities within 48 hours or sooner if required at no
additional cost to the Owner.


C.

Contractor will be required to incorporate permanent erosion control features into
project at e
arliest practical time to minimize need for temporary controls.


PART 2 PRODUCTS


2.01

Erosion Control


A.

Seeding and Mulching


Key Largo Wastewater Treatment District, Vacuum

Station

Basin

D



Project Manual

02370
-
2



March 2008


Erosion and Sedimentation Control

B.

Sodding


C.

Hydro
-
seeding


D.

Coarse Aggregate


2.02

Sedimentation Control


A.

Silt Fence
-

Per FDOT Index No. 102


B.

Floating Turbidity Bar
riers
-

Per FDOT Index No. 103


C.

Hay Bales
-

Per FDOT Index No. 102


PART 3 EXECUTION


3.01

Erosion Control


A.

Maintain temporary erosion control systems as directed by Owner or governing
authorities to control erosion and siltation during life of contract.


B.

Permanently grass cut slopes as excavation proceeds to extent considered
desirable and practical.


C.

Grass all disturbed areas within 7 days of initial disturbance. Type of grassing
shall be as follows: temporary grassing to be sodding at all drainage stru
ctures,
retention areas, swales and ditches, and where slopes are steeper than 5:1.
Temporary grassing can be seed and mulch at all other locations unless
otherwise indicated in the drawings or specifications.


D.

Dirt roads are to be stabilized and compa
cted within 7 days of the completion of

trenching and grading activities.


3.02

Sedimentation Control


A.

Install prior to construction.


B.

Inspect every two weeks during construction.


C.

Remove any sediment build
-
up.


D.

Repair and reinstall any damaged or missing

sediment control measures. Install
additional measures if inspection reveals additional sedimentation control is
necessary.


E.

Rough excavate and grade any proposed storm
-
water ponds at the start of site
grading activities. Direct site runoff to the ponds

to minimize runoff to offsite
areas.


END OF SECTION