REQUEST PERMISSION TO PROCEED TO EMC FOR APPROVAL
- Slides: 11
REQUEST PERMISSION TO PROCEED TO EMC FOR APPROVAL OF 2014 303(D) LISTING METHODOLOGY Kathy Stecker
Schedule 2 March 13 -14 – 303(d) Listing Methods to WQC/ EMC for approval DWQ applies methods, conducts review Jan. – Feb. 2014 – Public review of 303(d) List March – EMC info item on results April 1 – Submit List to EPA for approval May-June – Public comment on 2016 listing methods
Status 3 Documents A. B. C. 2014 303(d) Listing Methodology 2014 Assessment Process Comments and Responses 2014 Water Quality Assessment Process DWQ meeting with commenters � February 18, 2013
2014 Assessment Process Comments and Responses 303(d) listing methods 1. 2. 3. 4. Single benthos or fish community results Shellfish harvesting classifications Fish consumption listings Quantify statistical confidence More information requested 1. 2. 3. 4. 5. Rationale for each listing Natural conditions All assessment categories Data acceptability De-listing process
2014 Water Quality Assessment Process Comprehensive, transparent, understandable description of entire assessment process � “De-listing” � Data submittal � Assessment units � Categories 1 -5
Assessment Categories 1 2 Meeting criteria 3 No info/inconclusive 4 303(d) List 5 Criteria exceeded
2014 Water Quality Assessment Process Changes from 2012 � Fish tissue data Category 5 = site-specific fish consumption advisories developed using fish tissue data Develop guidance for moving waters from Category 4 t to Category 1 t for mercury, consistent with EPA guidance � 90% For statistical confidence for Categories 4 and 5 certain numeric criteria With 10% exceedance allowance
2014 Water Quality Assessment Process Categories 4 and 5 � Greater than 10% of samples exceed criteria, with greater than or equal to 90% statistical confidence Category 3 � Greater than or equal to 10% of samples exceed criteria, with less than 90% statistical confidence Category 1 � Less than 10% of samples exceed criteria
Example – Turbidity Assessment (2012 Data Set) Category 1 3 4+5 Estimated Number of Locations Old Method New Method 877 55 117 118 56
2014 303(d) Listing Methodology Changes � Fish tissue data � 90% statistical confidence for listing
REQUEST PERMISSION TO PROCEED TO EMC FOR APPROVAL OF 2014 303(D) LISTING METHODOLOGY
