7- Construction Flashcards
All construction credits
Construction P7.1- Communicate and verify sustainable construction practices
Construction P7.2- Control and retain construction pollutants
Construction P7.3- Restore soils disturbed during construction
Construction C7.4- Restore soils disturbed by previous development
Construction C7.5- Restore soils disturbed by previous development
Construction C7.6- Divert reusable veg, rocks, and soil from disposal
Construction C7.7- Protect air quality during construction
Construction P7.1- Communicate and verify sustainable construction practices
Intent
Ensure site performance by communicating and verifying the implementation of sustainable practices throughout the construction process.
Construction P7.1- Communicate and verify sustainable construction practices
Requirements
Designate an integrated design team member (see Pre-Design P2.1: Use an integrative
design process), other than the contractor, who will be responsible for verifying the site
is built per the construction specifications and drawings.
Before construction starts, hold a meeting that includes at least one person from each discipline from the integrated design team, plus the major subcontractors.
- Review construction specifications and drawings and convey the project’s sustainability principles and performance goals to the contractor and subcontractors.
- Review the steps needed to achieve all the prerequisites and pursued credits.
- Hold additional meetings as necessary when additional subcontractors are hired.
Prior to construction, create a SITES Punchlist that assigns responsibility for each prerequisite and desired credit in a worksheet (see SITES Punchlist Worksheet) to a member of the integrated design team. That person will sign off on each assigned item as it is implemented.
Construction P7.1- Communicate and verify sustainable construction practices
Submittal Docs
SITES Punchlist Worksheet, with sign-off signatures and dates for implementation of each SITES prerequisite and pursued credits
Meeting minutes from the pre-construction meeting, complete with signatures demonstrating at least one person from each discipline from the integrated design team was present
Construction P7.2- Control and retain construction pollutants
Intent
Protect receiving waters (including surface water, groundwater, and combined sewers or stormwater systems), air quality, and public safety by preventing and minimizing the
discharge of construction site pollutants and materials.
Construction P7.2- Control and retain construction pollutants
Requirements
Create and implement an erosion, sedimentation, and pollutant control plan, commonly
referred to as a stormwater pollution prevention plan (SWPPP) or erosion and sedimentation control plan (ESC) for all construction activities associated with the project.
- Regardless of project size, the plan (SWPPP or ESC) must conform to erosion and sedimentation requirements of the most current version of the U.S. EPA Construction General Permit (or local equivalent from projects outside the United
States) or local erosion and sedimentation control standards and codes, whichever is more stringent. The plan must list the best management practices (BMPs) employed and describe how the BMPs accomplish the following objectives:
> Prevent loss of soil during construction by stormwater runoff or wind erosion,
including protecting topsoil by stockpiling or covering for reuse.
> Prevent and reduce sediment discharges into storm conveyances, receiving
waters, or other public infrastructure components or systems.
> Prevent polluting the air with dust and particulate matter.
> Prevent runoff and infiltration of other pollutants from construction sites (e.g.,
thermal pollution, concrete wash, fuels, solvents, hazardous chemical runoff,
high or low pH discharges, pavement sealants) and ensure proper disposal of
all construction related materials.
> Protect any Vegetation and Soil Protection Zones (VSPZs) and other areas of
vegetation that will remain on site from construction activities.
Ensure the section of the site maintenance plan (see O+M P8.1: Plan for sustainable site
maintenance) is complete and describes the on-going management activities to protect
the integrity of VSPZs.
Note: The construction phase of the project is considered complete when the site is
stabilized, a notice of termination is filed, or a notice of substantial completion is issued.
The construction general permit (CGP) outlines the provisions necessary to comply with
Phase I and Phase II of the U.S. EPA National Pollutant Discharge Elimination System (NPDES) program (or local equivalent for projects outside the United States). Although the CGP applies only to sites greater than one acre (0.40 hectares), its requirements are applied to all projects for the purposes of this prerequisite.
Construction P7.2- Control and retain construction pollutants
Submittal Documentation
The SWPPP, ESC, or other local required plan (whichever is more stringent)
- If a local standard has been followed, provide documentation to demonstrate the local standard is equal to or more stringent than the referenced NPDES program.
Site plan showing the erosion and sedimentation control measures implemented on site
Narrative describing the erosion and sedimentation control measures implemented on-site
Video or photos that document the erosion and sedimentation control measures implemented on site
Construction P7.3- Restore soils disturbed during construction
Intent
Support healthy plants, biological communities, water storage, and infiltration by restoring soils disturbed during construction.
Construction P7.3- Restore soils disturbed during construction
Requirements - General
Restore all soils on site that have been disturbed by current construction activities and
that will serve as the final vegetated area (regardless whether the pre-construction soil
condition was classified as healthy or disturbed):
Locate reference soils to guide performance criteria that are appropriate for the site’s
vegetation, intended program, and site elements.
- If identified reference soils are not appropriate for the design intent, explain why
and describe the soil characteristics that will guide soil restoration treatment
efforts. (See Pre-Design P2.2: Conduct a pre-design site assessment and Soil+Veg
P4.1: Create and communicate a soil management plan.)
Restore soils to a minimum depth of 12 inches (30.48 centimeters).
- Where planting trees, restore soils to a greater depth and volume to support (biologically, structurally, hydrologically, and geotechnically) the intended mature tree canopy.
Construction P7.3- Restore soils disturbed during construction
Requirements - Organic matter
Test restored (final) soil conditions to ensure the following soil restoration criteria are
met:
Organic matter (required):
- Achieve appropriate organic matter for plant growth, water storage, and infiltration.
Amend soils with mature, stable compost such that, at minimum, the top 12 inches of soil (30.48 centimeters) contain at least three percent organic matter or
organic matter levels and depths that are comparable to the site’s reference soil and appropriate for vegetation and program needs. Do not use sphagnum peat or
organic amendments that contain sphagnum peat.
- Acceptable test methods for determining soil organic matter include the most current version of ASTM D2974 Test Methods for Moisture, Ash, and Organic
Matter of Peat and Other Organic Soils and TMECC 05.07A Loss-On-Ignition Organic Matter Method.
Construction P7.3- Restore soils disturbed during construction
Requirements - Compaction / infiltration
- Compaction (field test or undisturbed core sample only):
- Ensure bulk densities within 100 percent of the root zone do not exceed the maximum values given in Figure 7.3-A or Figure 7.3-B (see the Documentation
guidance section).
Achieve infiltration rates (inches or centimeters per hour) or saturated hydraulic conductivity (millimeters per second) comparable to the site’s reference soils and appropriate for vegetation and program needs.
- Note: This test must only be done in the field.
Construction P7.3- Restore soils disturbed during construction
Requirements - Soil chemical characteristics
Restore appropriate soil chemical characteristics for plant growth. The minimum
basic profile that must be tested includes:
- pH
- Soluble salts (electrical conductivity)
- Cation exchange capacity (CEC)
- Extractable phosphorus
- Potassium
- Calcium
- Magnesium
- Sodium (in semi-arid and arid climates)
The pH, cation exchange capacity, and nutrient profiles should be comparable to the original undisturbed soil or the site’s reference soil and appropriate for
vegetation and program needs. Salinity must be suitable for regionally appropriate
plant species.
OR
Soil biological function:
- Ensure that soil biological function is restored in remediated soils. Soil biota
assays are complex and vary regionally, making potentially mineralizable nitrogen
serve as a proxy assessment of biological activity
Construction P7.3- Restore soils disturbed during construction
Requirements - Structural or engineered media
These specialized media are exempt from meeting the soil restoration criteria above when
used for applications such as the following. However, all other requirements must be met
and documentation submitted accordingly:
- Athletic fields
- Green roofs
- Raingardens
- Vertical green walls
- Trees in paving
- Bioswales
- Green vehicle easements
- Steep slopes
- Food gardens
- Constructed wetlands
Note: Neither imported topsoils nor manufactured soil blends designed to serve as topsoil
may be mined from the following locations (unless soils are a byproduct of a construction
process):
- Greenfield sites
- Prime farmland, unique farmland, farmland of statewide importance or farmland of local
importance, as defined by the U.S. Natural Resources Conservation Service (or local
equivalent for projects outside the United States)
Construction P7.3- Restore soils disturbed during construction
Submittal docs
Site plan illustrating the full extent of the site’s final vegetated area
- Indicate which parts of the final vegetated area contain soils that have been disturbed during construction (noting degree of disturbance), which parts will be
restored, and which parts will be re-vegetated, as included in the soil management plan (see Soil+Veg P4.1: Create and communicate a soil management plan).
Narrative clearly and concisely describing the following steps:
- The approach to restoring soil conditions that support the intended plantings
- The results and strategy of the soil sampling and testing and how test results
complete the following steps:
> Address required soil restoration criteria
> Reflect reference soil characteristics
> Inform a sustainable approach to restoring soil conditions
- Calculations or description correlating quantities of amendments with soil testing
results
- Special circumstances that may have influenced soil restoration techniques or
sampling and testing, including the following examples:
> For structural or engineered media, provide a narrative describing the components of media and how the media will be specified and mixed to provide good growing conditions for intended plants. By referencing published soil specification or blending guidelines, the narrative should show that the proposed specification meets current best available science and practice
standards for that media.
> If soil disturbance is due to prescribed burning, provide both a narrative outlining how burning will be done so as to minimize damage to the soil horizon, and verification from the prescribed burning professional indicating that soil horizons modified due to burning have been restored.
Soil tests to demonstrate that the selected restoration techniques achieved criteria for the following categories in restored soils:
1. Organic matter (required)
2. Compaction (field test or undisturbed core sample only)
OR
Infiltration (field test only)
3. Soil chemical characteristics
OR
Soil biological function
Receipts from soil, compost, and amendments suppliers to demonstrate that measures
were taken to restore soil
Construction P7.3- Restore soils disturbed during construction
Bulk densities
Maximum allowable bulk densities for sustainable soil management are based on 95
percent of the bulk density value at which growth limitations are expected for an average
range of plant material, as described by Daddow and Warrington (1983). While these
requirements are expressed as maximum allowable bulk densities, it is important to note
that densities that are too low can also cause problems, especially for lawn areas or
slopes.
To calculate the maximum allowable bulk density for a soil:
–Obtain a laboratory analysis of the sand, silt, and clay percentages
–Sketch a parallel line for each percentage along the appropriate axis
–At the point of intersection, interpolate a value between the isodensity lines
»For example, in Figure 7.3-A, clay loam reflects a soil comprised of 33 percent
sand, 33 percent silt, and 33 percent clay. Interpolating a value between the
1.47 and 1.38 isodensity lines yields an approximate maximum allowable bulk
density of 1.43 g/cm3. Proctor laboratory tests are not useful to document
compliance with this compaction requirement.
