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BMP Handbook

The BMP Handbook is provided below in either one complete download or in individual sections. This handbook evaluates numerous Best Management Practices (BMPs) by explaining where and when to use the BMP, how to install, inspect and maintain the BMP, and if the BMP is used to meet water quality requirements. The handbook also provides design aids that outline how to determine trapping.

BMPs are important in the control of nonpoint pollution including stormwater runoff. These practices are implemented in site specific SWPPPs that identify and promote the most efficient BMPs based on site conditions. Examples of these BMPs  include retention ponds, detention and extended detention ponds, vegetative filter strips or buffers, and infiltration BMPs, such as infiltration trenches, medians and swales. All of which are explained in detail in the BMP Handbook.

Construction Activities

Stormwater Documents

Click here to download the most recent documents that will help you obtain, maintain, or terminate coverage under the General Permits.

Design Guidance

Applications & Forms

Click here to download any of the applications or forms that will help you obtain or terminate coverage under the General Permits.

Regulated MS4s

Final Stabilization

Click here to learn more about how to reach final stabilization during land disturbing activities.


SC DHEC Storm Water Management BMP Handbook

BMP Handbook

South Carolina’s Complete Stormwater Management BMP Handbook (18.7 MB)

BMP Field Manual

SC's BMP Field Manual for Contractors (19.4 MB)

List of Acronyms

Commonly Used Stormwater Acronyms

Basic Design Procedures

Overview of Types of BMPs

Engineering Aids

Information on Settling Velocity and Eroded Particle Sizes (Sedimentology)

Alternative BMPs

Information on what to submit when using BMPs not covered in this handbook.

Innovative Technologies

Information on “innovative” BMP use

IDEAL Model

Calculating Pollutant Loads with IDEAL Model

Water Quality Control

Information on Post Construction Water Quality Control.

 

Erosion Prevention Measures (Individual Sections of BMP Manual)

Erosion Prevention

General Information on Erosion Prevention Measures.

Surface Roughening

Information on horizontal grooves, depressions, or steps that run parallel to the contour of the land. Commonly referred to as Tracking.

Temporary Seeding

Information on seed selection, nutrient application, inspection and maintenance of temporary vegetated cover.

Mulching

A temporary soil stabilization practice using materials such as grass, hay, wood chips, wood fibers, or straw.

Erosion Control Blankets

Erosion Prevention BMP that composed primarily of biologically, photchemically or otherwise degradable constituents with a longevity of 1- and 3- years.

Turf
Reinforcement Mats

Composed of nondegradable products that enchance the ability of living plants to stablize soil. Greater longevity and velocity capacity than ECBs.

Flexible Growth Media

FGM combines both chemical and mechanical bonding techniques to lock a soil matrix in place.

Bonded Fiber Matrix

A continuous layer of non-toxic, degradable, elongated fiber materials held together by water insoluble bonding agents.

Permanent Seeding

Information on seed selection, nutrient application, inspection and maintenance of permanent vegetated cover.

Sodding

Information on transplanting vegetative sections of plant materials to promptly stabilize areas that is subject to erosion.

Riprap

Permanent, erosion-resistant aggregate consisting of large, loose, angular sonte with a filter fabric underlining.

Oulet Protection

Riprap, ECB, or TCM protection that dissipates the energy of concentrated stormwater flows reducing erosion or scouring at storm water outlets.

Dust Control

Information on how to control soil erosion that is a direct result of Wind.

Polyacrylamide (PAM)

A non-toxic chemical material used for controlling soil erosion and sedimentation through coagulation.

 

Sediment Control BMPs (Individual Sections of BMP Manual)

Sediment Control

General Information on Sediment Control BMPs.

Sediment Basin

Temporary collection basin used to trap sediment laden runoff and to slow down the flow so that soil particules fall from suspension before discharging.

Sediment Trap

A temporary excavated depression equipped with an earthen embankment with a spillway or outlet constucted used to collect and suspend sediment laden runoff.

Silt Fence

Temporary sediment control BMP that ponds sediment laden runoff and slowly releases through geotextile fabric.

Rock Check Dams

A small, temporary or permanent rock fill dam constructed across a drainage ditch, swale or channel to lower the speed of concentrated flows.

Sediment Tubes

Elongated tubes of compacted geotextiles, curled excelsior wood, natural coconut fiber or hardwood mulch installed in drainage conveyance swales.

Construction Entrance

A required temporary stone-stabilized pad located at any point where vehicular ingress and egress may occur on a land disturbance site.

Inlet Protection (IP)

Information on the types of devices that filter sediment laden runoff before entering any type of inlet.

Filter Fabric IP

Inlet Protection that uses silt fence technology.

Sediment Tube IP

Inlet Protection that makes use of sediment tubes.

Wire Mesh and Stone IP

Inlet Protection that uses hardware fabric/wire mesh and stone.

Block and Gravel IP

Inlet Protection that uses concrete blocks and gravel.

Rigid IP

Inlet Protection that uses prefabricated filters.

Surface Course Curb IP

Inlet Protection that uses inlet filter tubes placed in front of curb side, catch basin inlets.

Inlet Tubes

Additional information on inlet tubes that are placed around inlet structures.

Rock Sediment Dikes

Semi-circular sediment control structures constructed across drainage ditches, swales, low areas or other areast that receive concentrated flows.

 

Runoff Control and Conveyance Measures (Individual Sections of BMP Manual)

Runoff Control And Conveyance Measures

General Information on Runoff Control and Conveyance Measures.

Pipe Slope Drains

A temporary or permanent drain pipe that transports concentrated runoff from the top to the bottom of a slope.

Temporary
Stream Crossing

A bridge or colvert across a stream or watercourse for short-term use by construction vehicles and heavy equipment.

Diversion Measures

Dikes and/or Berms that are used to divert upslope runoff from crossing areas where there is a high risk of erosion.

 

Level Spreader

A permanent outlet for dikes and diversions consisting of an excavated channel constructed at zero grade across a slope that converts concentrated runoff to sheet flow and realeases it onto stabilized existing vegetation.

Subsurface Drains

A perforated pipe or conduit placed beneath the surface of the ground that collects and transports runoff filtered through the surrounding soils.

Construction Dewatering

The removal of storm water from bore pits, trenches and other excavations in a manner to prevent sediment laden discharge to downstream areas.

 

Vegetated
Conveyance Swales

Improve water quality by providing partial pollutant removal as water is filtered through vegetation or infiltration into the underlaying soil.

Stream Buffers

Area along a shoreline, wetland or stream where development is restricted or prohibited in order to provide a natural buffer that will filter runoff.

Disconnected Roof Tops

Directing rooftop runoff into pervious areas where it is allowed to filter through vegetation and/or allowed to infiltrate into the soil.

Cluster Devlopment

Concentrated devlopment away from environmentally sensitive areas to reduce the amount of impervious land cover.

Natural Infiltration

An area of undisturbed land with natural vegetation that accepts runoff from new development and infiltrates it into the soil.

 

Structural Water Quality Controls (Individual Sections of BMP Manual)

Sturctural Controls

General Information on Sturtural Water Quality Control Structures.

Wet Detention Ponds

Wet or permanent pool detention that improve storm water quality by detaining runoff for an extended period of time to allow pollutants suspendeded in the runoff to settle out.

Dry Detention Ponds

Detention that provides temporary storage for storm water runoff and detains runoff inflows in order to promotes the settlement of pollutants.

Underground
Detention Systems

Detention tanks or vaults located underground to attenuate peak stormwater flows.

Storm Water Wetlands

Consctructed wetlands that remove pollutants primarily through physical filtration and settling, by biological processes of wetland plants, and bacteria in substrate.

Bioretention Areas

Infiltration Areas that are designed to mimic natural forest ecosystems with a combination of soil filtration, plant nutrient uptake, and biological utilization.

Infiltration Trench

Excavations typically filled with stone to create an underground reservoir for stormwater runoff.

Enhanced Dry Swales

Conveyance Channels engineered to capture, treat, and release stormwater quality runoff volume from a designated area.

Pre-fabricated
 Control Devices

Information on various prefabricated water quality control structures.

Vegetated Filter Strips

Zones of vegetation where pollutant-laden runoff is introduced as sheet flow.

Porous Surfacing

Information of the use of grass or porous paving surfacing in leiu of impervious areas.

 

Appendices (Individual Sections of BMP Manual)

Appendix A -
BMP Guidelines

BMPs tables that display when to use certain BMPs, water quality characteristics, and water quality treaments ratings.

Appendix B -
BMP Selection Flowchart

A Flowchart that can be used to select proper BMPs  for either sediment control, runoff flow control and erosion prevention.

Appendix C –
Seeding Rate Tables

Temporary and Permanent Seeding Charts for various types of seed.

Appendix D –
Wetland Vegetation

Specifications on wetland vegetation that may improve water quality and flood control, may enhance the wildlife habitat and provide, and may be provided as education and recreational resources.

Appendix E –
Soils

Soil Distribution Tables for all South Carolina Soils.

Appendix F –
SC Rainfall Data

A table of various 24 Hour Storm Events with respective to counties, used to determine precipitation depth (inches).

Appendix G –
Erosion Control Standard Details

Construction details for various erosion control BMPs.

Appendix H –
Sediment Control Standard Details

Construction details for varius sediment control BMPs.

Appendix I –
Runoff Control Standard Details

Construction details for runoff control BMPs.

Appendix J –
Water Quality Standard Details

Construction details for water quality BMPs.

Appendix K –
Figures

Trapping Efficiency Figures referenced for all sediment control BMPs.

 


 

Bureau of Water . Phone: (803) 898-4300 . Fax: (803) 898-3795 .


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