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EMI-5 WATERCOURSE POLLUTION

 

Technical Clarification

The meaning of "Site-Specific Record"

Technical Clarification Number
EMI5-T-OB1-0627

Guidance
2013-03-14

The revised EMI-5 credit in the Green Star SA Office v1 Technical Manual under ‘Additional Guidance’, under ‘Design Rainfall Depth’ refers to a site-specific record.

The term ‘site-specific record’, follows the same guidance provided in the Green Star SA- Office v1 Energy Modelling Protocol Guide-Version 1.1, refers to the following:
• Weather data obtained from the South African Weather Service for a location within 50km of the building location; or
• In the absence of South African Weather Service Data, an actual year of recorded weather data from a location within 50km of the building location;
• In the absence of South African Weather Service Data or actual weather data within 50km, interpolated data based upon 3 points within 100km of the building location.

 

Erratum

Green Star SA - Revised credit EMI-05 Water Pollution (Revised: 19 November 2012)

Erratum Number
EMI5-E-OB1-0520

Guidance
2012-11-19

Following a review and public feedback period of the Pilot version of the credit Emi-05 Watercourse Pollution which was released for public comment from 09 May 2012 to 28 September 2012, the Green Building Council of South Africa has issued a revised version of the Emi-05 Watercourse Pollution credit for Green Star SA Office v1 and Retail Centre v1. This revised document replaces the Emi-05 Watercourse Pollution credit currently contained in the Green Star SA Office v1 and Retail Centre v1 Technical Manuals. Note that projects registered after 08 November 2012 must use the revised credit. Projects registered prior to 19 November 2012 may choose whether to use the original credit or the revised version, clearly indicating the option taken in their Green Star SA project submission.

Please see the link below for the credit:

Supplementary Information

SEE BELOW FOR ATTACHMENT FOR TC EMI5-E-OB1-0520

Erratum

Green Star SA - Office v1 Technical Manual: Page 326

Erratum Number
EMI5-E-OB1-0546

Guidance
2012-08-17

Documentation Requirements, description of documents, under the heading "Short report", replace “by the relevant project team member” with “by a suitably qualified professional”

 

Technical Clarification

Shared Stormwater Services

Technical Clarification Number
EMI5-T-OB1-0433

Guidance
2012-05-30

If an attenuation/retention pond or other strategy is shared between sites or projects it must be demonstrated how this provides sufficient attenuation/treatment and achieves the applicable credit criteria for the Green Star SA project and all other sites/projects linked to the same pond (i.e. the applicable Credit Criteria must be met for all sites served by the shared/district system). It is not required that Project Teams submit Credit Interpretation Requests (CIR) for this scenario.

 

Technical Clarification

How should stormwater from neighbouring sites, that enters the Project Site from the existing municipal stormwater line, be treated?

Technical Clarification Number
EMI5-T-OB1-0488

Guidance
2012-05-17

The project team is not required to treat the stormwater from neighbouring sites that enters the site from the existing municipal stormwater line. However, all stormwater drainage from the site that discharges into this municipal drainage line must comply with the credit criteria.

 

Technical Clarification

Sites directly adjacent to harbours or sections of coastline

Technical Clarification Number
EMI5-T-OB1-0330

Guidance
2011-10-14

For Projects where the project site is directly adjacent to a harbour or section of coastline and all stormwater run-off is discharged directly into the harbour or ocean from the site stormwater system, the first point addressing peak stormwater flows for rainfall events of up to a 1-in-2 year storm, may be claimed as ‘Not Applicable’.

 

Credit Interpretation Request

Off-site district attenuation

Credit Interpretation Request Number
EMI5-C-OB1-0273

Ruling
2011-05-24

The Credit Interpretation Request (CIR) seeking approval for the use of an off-site district attenuation facility on the basis that it contributes to the development not increasing peak stormwater flows for rainfall events of up to a 1-in-2 year storm (first point), is approved.

The CIR Review Panel notes that this CIR approval pertains to the inclusion of the off-site district attenuation facility only; the Project Team must still clearly demonstrate within the submission that the off-site district attenuation facility meets the requirements of the Credit Criteria for the district area it serves.

The Project Team is requested to include this CIR and all supporting documentation within the submission, clearly highlighting to the Assessors the relevant information demonstrating compliance.

The CIR Review Panel also notes that whilst the off-site district attenuation facility can be included for the mitigation of peak stormwater flows (i.e. the first point), it cannot contribute to the stormwater treatment and filtration requirements (second point, if applicable). The treatment of all stormwater leaving the site, at any time up to a 1-in-20 year storm event must occur within the site boundaries.

 

Technical Clarification

Riparian Buffer Zone

Technical Clarification Number
EMI5-T-OB1-0256

Guidance
2011-02-21

On page 325 of the Green Star SA – Office v1 Technical Manual, the sentence reading “A riparian buffer zone that has three separate zones of pollution buffering is installed within 9 metres of a waterway or natural watercourse and the development” should be removed and replaced with the following text:

A riparian buffer zone is designed and implemented in accordance with relevant local or national guidelines* to eliminate the negative impacts which the development and its associated stormwater runoff may have on adjacent aquatic systems.

*In the absence of relevant local or national guidelines, the buffer zone should be designed and implemented in accordance with the recommendations of a suitably qualified environmental professional.

In addition, under ‘Documentation Requirements’, ‘Short Report’ on page 326 of the Green Star SA - Office v1 Technical Manual (page 360 of Green Star SA - Retail Centre v1 Technical Manual), the following text should be added to the fourth bullet point:

“The environmental professional responsible for the design of the riparian buffer zone should also provide a short description of the system and how it will function.”

 

 

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