Post on 20-Jan-2016
description
transcript
NSF/ANSI Standards 60/61 NSF/ANSI Standards 60/61
Issue Paper #1 – Combining Annex D and EIssue Paper #1 – Combining Annex D and E
Issue Paper #2 – Additional Pass/Fail CriteriaIssue Paper #2 – Additional Pass/Fail Criteria
December 2013
COMBINING ANNEX D AND COMBINING ANNEX D AND ANNEX EANNEX E
IntroductionIntroduction
• Drinking water pass/fail criteria in NSF/ANSI Standards 60/61 are currently located in two separate annexes
• Annex D (normative) and Annex E (informative)
• In each annex, there are multiple tables (D1-D4 and E1-E2)
• As the annexes are currently maintained separately for Standard 60 and Standard 61, pass/fail criteria for chemicals may be listed in one Standard but not the other and duplicative entries are more challenging to identify
• Maintaining multiple tables in two Standards makes it difficult for users to locate pass/fail criteria
RecommendationsRecommendations
• Consolidate the drinking water criteria currently in Annex D and Annex E into a single annex
• Combined annex would be identical and appear in NSF/ANSI Standard 60 and Standard 61
• Recommendation is supported the Joint Peer Review Steering Committee (JPRSC)
Joint Peer Review Steering CommitteeJoint Peer Review Steering Committee
• Established to consolidate efforts among ANSI accredited certification bodies to prioritize risk assessments for review by the HAB and reconcile action levels derived from duplicate risk assessment efforts
• Membership includes HAB chair and representatives from five certification bodies
• Officially reached agreement to harmonize efforts in April 2013
Recommended Format for Combined AnnexRecommended Format for Combined Annex
• The current recommendation is to have the chemicals organized by both CAS# and alphabetically
Contaminant CAS # Drinking Water Regulatory Level
(MCL/MAC) or Total Allowable
Concentration (TAC) (mg/L)
Single Product Allowable
Concentration (SPAC) (mg/L)
Short Term Exposure
Level (STEL) (mg/L)
Source of Supporting
Documentation 1, 2, 3, 4, 5, 6
Previous Annex
Location
carbon disulfide 75-15-0 0.7 0.07 Derived from the oral RfD on the USEPA IRIS database with a default 20% relative source contribution for drinking water. Verification date: 08/05/1985
Std. 61 D3
carbon tetrachloride 56-23-5 0.005 0.0005 40 CFR §141.60, 40 CFR §141.61
Std. 60 D1, Std. 61 D1
carbonic acid, diisopropyl ester 6482-34-4 0.003 0.0003 TOE Std. 60 D4, Std. 61 D4
castor oil, hydrogenated, ethoxylated 61788-85-0 0.003 0.0003 TOE Std. 60 D4, Std. 61 D4
cerium 7440-45-1 0.003 0.0003 TOE Std. 60 D4, Std. 61 D4
chloral hydrate 302-17-0 0.7 0.07 Derived from the oral RfD on the USEPA IRIS database with a default 20% relative source contribution for drinking water. Agency Consensus Date: 11/16/1999
Std. 60 D3, Std. 61 D3
chloramines (total as Cl2) 10599-90-3 411 0.4 40 CFR §141.54 Std. 60 D1, Std. 61 D1
chlorate 14866-68-3 1 0.2 Std. 60 D1 chlordane 57-74-9 0.002 0.0002 40 CFR §141.60, 40
CFR §141.61 Std. 60 D1, Std. 61 D1
Format ChallengesFormat Challenges
• Chemical names – There is not a currently unified chemical naming approach between certifiers which limits the benefits of the alphabetical listing
– May be possible to address through JPRSC
• Length – The proposed format results in a 199 page document
– This does not include substantial future additions
– Solution may be to remove annexes containing pass/fail criteria from Standards into a separate stand alone document
Normative/InformativeNormative/Informative
• Currently, NSF/ANSI Standards 60/61 distinguish between normative and informative pass/fail criteria
• Normative Criteria
– Under Annex D, pass/fail values listed are to be used in the determination of product compliance with the Standard
• Informative Criteria
– Under Annex E, a chemical that exceeds the informative criteria should be subject to a complete toxicity data review and risk assessment prior to using the informational evaluation criteria to determine compliance with the Standard
• A consensus among the JPRSC membership was that no distinction is currently made between normative and informative values when evaluating compliance
ADDITION/UPDATES OF ADDITION/UPDATES OF PASS/FAIL CRITERIAPASS/FAIL CRITERIA
New Pass/Fail CriteriaNew Pass/Fail Criteria
- Based on reconciliation efforts and development of new risk assessments, NSF International, along with the remainder of the JPRSC membership, is recommending the addition (or update) of 541 pass/fail criteria to Annex D/E of both Standards
- A footnote referencing to the activities of the JPRSC would be included
Sources of New CriteriaSources of New Criteria
• NSF International – Peer Reviewed Risk Assessments
– Peer reviewed in 2012 or 2013 by the Health Advisory Board
• NSF International – Threshold of Evaluation Chemicals
• NSF International – Other Additions
• JPRSC – Initial List of Reconciled Values
• JPRSC – Threshold of Evaluation Chemicals
Questions for the Joint CommitteeQuestions for the Joint Committee
• Should Annex D and Annex E be combined into a single Annex?
• Is it appropriate to have the newly formatted annex be considered normative?
• Are two separate tables necessary (one organized by CAS# and the other alphabetically by chemical name)?
• Should the annex of pass/fail criteria be removed from the Standards into separate stand alone document?