In general, complying with this prerequisite is standard practice in most urban and suburban areas, where most or all of the EPA Construction General PermitEPA's Construction General Permit. Outlines the provisions necessary to comply with Phase I and Phase II of the National Pollutant Discharge Elimination System (NPDES) program. (CGPEPA's Construction General Permit. Outlines the provisions necessary to comply with Phase I and Phase II of the National Pollutant Discharge Elimination System (NPDES) program.) requirements have been adopted and implemented at the state or county level. Regulators at those levels often threaten heavy fines for not complying with CGP requirements, so most projects do so without the added incentive of the LEED prerequisite.
Early on in project planning, compare your local code requirements to the CGP to determine which is more stringent. If your local code is more stringent, then you will meet the prerequisite just by following that. If it is less stringent, follow the CGP to achieve the prerequisite.
The CGP extends compliance with the National Pollutant Discharge Elimination System (NPDESThe National Pollutant Discharge Elimination System (NPDES) is a permit program that controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Industrial, municipal, and other facilities must obtain permits if their discharges go directly to surface waters.) stormwater regulations to construction activities. It has three main categories that need to be addressed as you create an erosion and sedimentation control (ESC) plan:
Simply put, your ESC plan implements good housekeeping on a site-wide basis, minimizing the impact of construction on local environmental resources and surrounding properties.
As written, the CGP applies to sites of one acre or larger. However, all projects pursuing LEED certification must meet the requirements of the CGP, regardless of size.
Often the civil engineer is responsible for creating the ESC plan, which is then implemented by the general contractor. Smaller projects may find the contractor is the one providing the plan, often one that is standard for their company.
The ESC plan may be submitted as documentation, in the form of a site plan or a narrative report.
Inlet protectionTo demonstrate that your ESC plan was implemented, your projects will also be required to provide one of the following:
Many urban projects have zero lot lines and, therefore, no associated “site.” If your project is like this, you are not exept from developing and implementing an ESC plan. However, strategies and BMPs will differ from those implemented on projects with site area. Inlet protection will still be required, even if storm drains are not immediately on site and within your LEED boundary. Tenting work areas and using temporary enclosures can prevent dust and airborne particulatesTotal suspended particulate matter found in the atmosphere as solid particles or liquid droplets. Chemical composition of particulates varies widely, depending on location and time of year. Sources of airborne particulates include: dust, emissions from industrial processes, combustion products from the burning of wood and coal, combustion products associated with motor vehicle or non-road engine exhausts, and reactions to gases in the atmosphere. (EPA) from leaving the project site. Vehicle tracking and concrete washout will also need to be addressed, and washout will likely have to be managed onsite somehow. Don't forget to include staging areas.
Concrete washoutDocument the plan with a narrative report explaining which CGP requirements don’t apply to your project conditions, which do, and how you plan to implement them.
No. You must always do an ESC plan according to the credit requirements. We have yet to hear of a project that didn't have some issues to address. See the above section titled "Zero lot lines."
BMPs for steep slopes should address soil retention, but not water retention. These could include silt fencing and straw wattles, hydro seeding and stabilized mulching, geotextiles and mats, and most importantly, preservation of natural vegetation.
LEED does not offer specific requirements on ESC control measures, beyond the standards that it references, and the documentation requirements. LEEDuser recommends working with a civil engineer who understands the LEED and EPA requirements, and relying on the professional judgment of the engineer for specific technical questions. LEEDuser has not heard that LEED reviewers are deeply scrutinizing ESC plans and coming back with highly technical questions.
This prerequisite offers several options for documentation, including date-stamped photographs, a narrative describing the ESC plan implementation, or a builder declaration of periodic inspection and documentation of ESC implementation. You can rely on project specifics to choose the best option for you—LEED has no preference.
Ideally, use your cameras to imprint a visible date on a corner of the image. Most cameras offer this option. Digital files also typically encode a date when the file was created, or encode that date in the file name, and while these methods aren't ideal, some project teams have reported success submitting this type of documentation.
As long as the project has been actively implementing an ESC plan during the current development of the project site, you should be okay. If that's not the case, then the outcome will depend on project specifics, and you will likely need official guidance from GBCI.
LEEDuser has advised teams that in multi-phase projects, it's okay to focus documentation of the ESC plan only on the current phase, when LEED became part of the project scope. In general, if there is some question about whether controls were in place during the LEED project, you may not be able to earn the prerequisite.
USGBC has not identified specific standards for judging this, or defined certain codes as compliant with the credit, or not. The stringency of other codes relative to EPA's Construction General Permit is judged on a case-by-case basis.
Review pages B-1 through B-4 of the EPA Construction General Permit (CGP) (see Resources) to determine if your state administers the CGP requirements for all projects.
In regions where the EPA CGP is not standard practice, compare the local code with the CGP and make adjustments, if necessary, to include all the CGP requirements.
Meeting the requirements of this prerequisite is standard practice in many regions and, therefore, no- or low-cost for LEED.
The materials cost to implement these measures is minimal and can potentially save money by preserving the vegetation and topsoil on-site.
Conduct a site evaluation to assess opportunities for minimizing the alteration of the natural stormwater runoff patterns of your site and the disruption of mature vegetation, especially trees. This will save money and time in terms of earth-moving and replanting vegetation.
Ask your civil engineer about soil types and what type of drainage you will have once the topsoil and vegetation are disturbed.
Establish who will create your ESC and stormwater pollution prevention plans. Usually, the civil engineer creates them, and the contractor is responsible for their onsite implementation.
It is best to include your ESC plan in both project drawings and project specifications so that the intention of the plan is clearly communicated to the project team, especially contractors and subcontractors.
Determine whether the 2003 EPA CGP or local erosion and sedimentation control standards are more stringent―and follow the more stringent standards. Often the state department of environmental protection or equivalent will have a written ruling on the comparison of the CGP standards and the local standards.
A good first step to determine which is more stringent is to review your local code to be sure it contains at minimum the general categories contained in the CGP. If not, you’ll know that you need to follow the CGP. If so, you’ll need to review your local code in detail to be sure that all of the requirements are included. The general categories are as follows:
If local standards are equal to or more stringent than the CGP,you'll need to provide a narrative report detailing this. Write the narrative when you do the comparison, so that it's fresh in your mind.
All written ESC plans must include the following:
Determine which path your project will follow to demonstrate implementation compliance: inspection report, photos, or narrative report.
Photos are likely the easiest way to demonstrate compliance, unless an inspection report has already been completed.
Develop a site-wide, earth-moving schedule to minimize the impact on established vegetation and to stockpile topsoil and protect it from erosion. This can also complement your strategy to achieve SSc5.1: Site Development—Protect or Restore Habitat, by limiting site disturbance and maintaining native vegetation.
Proper scheduling and staging of earth-moving activities can lower the costs associated with sediment and erosion controls.
Retain as much of the existing vegetation as possible, not only to lower costs for replacements, but also to decrease the cost of structural controls.
Careful implementation of the stormwater pollution prevention plan (SWPPP) by the contractor should inform the design and installation of stormwater management systems onsite. This will enable those systems to be integrated to the greatest extent possible during construction, preventing unexpected stormwater discharges into receiving waterways.
If attempting one or both of the stormwater management credits SSc6.1 and SSc6.2 confirm with the contractor that the SWPPP accurately represents the hydrologic characteristics of the site and is performing as anticipated. Check on assumed infiltration rates, suspected rate and quantity of run-off to receiving streams, and discuss potential storage options. Make changes to the stormwater management system accordingly to improve its effectiveness and ensure that the credit calculations are accurate.
Create a draft ESC plan drawing or a narrative report that outlines how your project will comply with the requirements of the CGP or the local standard. See the Documentation Toolkit for samples.
Make sure that you use the same LEED project boundary as all other LEED credits your project is attempting (this is particularly relevant with other Sustainable Sites credits).
A project drawing should include anticipated stormwater flows and indicate the location and type of any planned ESC measures.
Review your ESC and stormwater pollution prevention plans to ensure adequate measures will be implemented to meet the CGP, or local requirements. A discussion between the contractor and the civil engineer on the schedule and implementation of planned measures should be part of this review.
Finalize your ESC plan drawings or narrative report. Verify that your plan is in compliance with the CGP or local standards.
Review all ESC project drawings and construction specifications prior to construction activities.
Verify that all ESC measures are in place before any construction activities begin.
The general contractor implements the ESC plan until construction is completed and all disturbed areas have been stabilized.
Have a representative from the general contractor’s office onsite daily to monitor and implement necessary measures laid out in your ESC plan.
The civil engineer, contractor, or a third party should inspect your ESC plan measures on a weekly basis (bi-weekly if inspections are also conducted after any weather event involving more than 0.5 inches of rain), and submit status reports on ESC plan implementation. These reports should include labeled and dated photographs, an inspection log, or a narrative report describing the performance of the measures implemented.
Provide corrective actions immediately after any rain event.
Corrective actions can range from adjusting the placement of silt fencing and removing debris from stormwater catchment basins to replanting areas of temporary seeding and adding material to gravel skirts at entrances and exits.
Preserve existing vegetation, especially mature trees, whenever possible. This will decrease costs for temporary stabilization measures and erosion controls. In addition, the vegetation may also be used as part of your landscaping plan.
After completion of all construction activities, document credit compliance in LEED Online by uploading these documents:
Implement an ongoing stormwater system maintenance plan with the landscape manager. This should include a regular schedule for monitoring the performance of the stormwater management system and guidelines for repairing or modifying site features that are causing problems. These guidelines could include replacing or increasing vegetation, redirecting runoff, and increasing storage.
Excerpted from LEED 2009 for Schools New Construction and Major Renovations
To reduce pollution from construction activities by controlling soil erosion, waterway sedimentation, and airborne dust.
Create and implement an erosion and sedimentation control plan for all construction activities associated with the project. The plan must conform to the erosion and sedimentation requirements of the 2003 EPA Construction General PermitEPA's Construction General Permit. Outlines the provisions necessary to comply with Phase I and Phase II of the National Pollutant Discharge Elimination System (NPDES) program. OR local standards and codes, whichever is more stringent. The plan must describe the measures implemented to accomplish the following objectives:
The EPA’s construction general permit outlines the provisions necessary to comply with Phase I and Phase II of the National Pollutant Discharge Elimination System (NPDESThe National Pollutant Discharge Elimination System (NPDES) is a permit program that controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Industrial, municipal, and other facilities must obtain permits if their discharges go directly to surface waters.) program. While the permit only applies to construction sites greater than 1 acre, the requirements are applied to all projects for the purposes of this prerequisite. Information on the EPA construction general permit is available at http://cfpub.epa.gov/ npdes/stormwater/cgpEPA's Construction General Permit. Outlines the provisions necessary to comply with Phase I and Phase II of the National Pollutant Discharge Elimination System (NPDES) program..cfm.
Create an erosion and sedimentation control plan during the design phase of the project. Consider employing strategies such as temporary and permanent seeding, mulching, earthen dikes, silt fencing, sediment traps and sediment basins.
Resources here include Developing Your Stormwater Pollution Prevention Plan: A Guide for Construction Sites, SWPPP Templates, Sample Inspection Form, Example SWPPPs, Key Resources, and Selected State BMPBest Management Practice/Guidance Manuals.
BMPBest Management Practice Manual.
Connect with worldwide member based erosion and sediment control community.
Provides certification programs a list of qualified professionals.
A variety of Canadian resources on stormwater management and BMPs.
Take photos like these to document proper implementation of your ESCAn Erosion and Sedimentation Control (ESC) plan is a collection of measures designed to reduce pollution from construction activities by controlling soil erosion, waterway sedimentation and airborne dust generation plan.
The following links take you to the public, informational versions of the dynamic LEED Online forms for each Schools-2009 SS credit. You'll need to fill out the live versions of these forms on LEED Online for each credit you hope to earn.
Version 4 forms (newest):
Version 3 forms:
These links are posted by LEEDuser with USGBC's permission. For more information, visit LEED Online and click "Sample Forms Download."
Documentation for this credit is part of the Construction Phase submittal.
Posted here are sample drawings for erosion and sedimentation control (ESCAn Erosion and Sedimentation Control (ESC) plan is a collection of measures designed to reduce pollution from construction activities by controlling soil erosion, waterway sedimentation and airborne dust generation) plans from a LEED project.
Samples from this LEED Platinum project demonstrate how to document SSp1. This 8-story, 100-unit public senior housing development will use 50% less energy than a comparable code compliant building. Although on a tight urban site, the project also features innovative stormwater management plans, and a pilot graywaterGraywater is untreated household waste water which has not come into contact with toilet waste. Graywater typically includes used water from bathtubs, showers, bathroom wash basins, and water from clothes-washer and laundry tubs, though definitions may vary. Some states and local authorities also allow kitchen sink wastewater to be included in graywater. Project teams should comply with the graywater definition established by the authority having jurisdiction in the project area. reuse system—all on a tight budget under a major urban housing authority.
There are no comments yet. Start the discussion!
Sustainable Project Manager
Minimizing construction impacts and carrying out a low-impact development strategy will help to achieve this credit.
The ESC and stormwater plan developed for construction will be the basis of plans for the management of stormwater onsite (contributing also to SSc6.2).
Do you know which LEED credits have the most LEED Interpretations and addenda, and which have none? The Missing Manual does. Check here first to see where you need to update yourself, and share the link with your team.
LEEDuser members get it free >
LEEDuser is produced by BuildingGreen, Inc., with YR&G authoring most of the original content. LEEDuser enjoys ongoing collaboration with USGBC. Read more about our team
Copyright 2014 – BuildingGreen, Inc.