BASIC DOCUMENTATION
I05-1 Potable Water Use Reduction Documentation
READY AUDIT
All projects
- Plans including fixture and equipment schedules for all water end uses in the project with flow rates and/or water consumption noted
- Baseline potable water use figures from table 5-1 or a customized baseline.
- Assumptions and calculations showing compliance with the required potable water reduction percentage.
Custom baselines
- Baselines customized by standard end use must also document the alternate baseline reference data and show in the calculations by end use, where baseline adjustments were made.
- Interior projects showing fixtures within the leased space as being not within the project’s control, must also provide substantiating lease documentation.
- Customized baselines requiring preapproval must provide the approved baseline potable water use figures as well as a copy of the Institute’s Request for Ruling response.
Landscape and Infrastructure Projects
- Manufacturer flow rates for each fixture installed.
FINAL AUDIT
- Metered water use data showing total potable water use during the performance period.
- Calculations showing that the potable water used meets the percentage reduction as required based on the building Typology.
I05-2 Irrigation Documentation
READY AUDIT
- A narrative describing the landscaping strategy and irrigation needs, if any.
- Labeled landscape drawings showing:
- All exterior plantings, including any irrigation sources, indicating that all areas either don’t require irrigation (after the performance period starts) or receive irrigation only from non-potable sources.
- Interior plantings that require a dedicated irrigation line and the connected non-potable water source
FINAL AUDIT
If landscape requires irrigation:
Metered data from non-potable water usage during the performance period.
I05-3 Stormwater Documentation
READY AUDIT
- Narrative of stormwater control strategy and control and treatment methods used in accordance with the requirements listed in Table 5-6. Narrative must describe the downstream context, the historic hydrology, and the current ecological conditions and how the project design responds to them.
- Summary table and model output from a peak runoff event model meeting the requirements detailed under Peak Discharge Rate Control, along with citations of data sources and listing of variables demonstrating that the site meets peak runoff requirements listed in Table 5-6.
- Summary table and model output from a model meeting the requirements detailed under volume management stormwater model demonstrating compliance with the volume management requirements listed in Table 5-6.
FINAL AUDIT
If connecting to a municipal stormwater system:
- A signed letter from the utility stating that water will end up in the same water body as site runoff.
- Documentation that the municipal stormwater is not combined with the municipal sewer system.
- Documentation showing that stormwater treatment requirements have been met, as shown in Table 5-7.
I05-4 Treatment Documentation
READY AUDIT
Documents (filter specifications and/or test results) demonstrating compliance with treatment requirements.
I05-5 Combined Sewer System Documentation
READY AUDIT
Official documents showing or stating whether the utility uses a combined or separated sewer system.
If on a combined sewer system:
- Letter from wastewater utility confirming storm event that is likely to cause a combined sewer overflow.
- Calculations and/or models showing that the project prevents any runoff during the CSO-causing design storm.
I05 Case Study
FINAL AUDIT
A summary narrative describing the project team’s approach to the imperative, highlighting any lessons learned or particularly rewarding outcomes
EXCEPTION DOCUMENTATION
Projects that use Exceptions or compliance paths that are not standard for all projects must submit additional documentation per the below. Unless the exception is tied to the 12-month performance period, all Exception documentation must be submitted at the Ready Audit.
I05-a Exception Narrative
Narrative making a clear case that the project is eligible for the Exception and how it has met the requirements. The narrative should include attachments of any documentation required to demonstrate eligibility.
I05-b Baseline and Performance Data
Meter data, utility bills, and/or calculations as needed to show compliance with Exception requirements.
I05-c Design Documentation
Design documents, such as contractor specifications, project manual excerpts, drawings, or cut sheets, and any other documentation specified for use of the Exception showing how the project meets Exception requirements. Where the Exception requires Handprinting, a comprehensive description of the strategy and methods, as indicated in the Exception documentation requirements, must be provided.
I05-d ILFI Ruling Documentation
If in an area with a combined sewer system, or otherwise required for use of the Exception, records showing that ILFI approved the project team’s detention, Handprinting, or other applicable strategy through a Request for Ruling.
I05-e Advocacy Documentation
Where required for use of the exception, documentation demonstrating completion of the specified research and/or advocacy, including, as applicable, copies of letters and addressees, research results, notes from meetings, and any evidence of any other required action.
