Unregulated Contaminant Monitoring Rule Update

Transcription

1 Unregulated Contaminant Monitoring Rule Update

2 This Presentation General information about UCM and why it s done History of the program How the monitoring program is set up UCMR3 Contaminants Findings through June 2015 UCMR4 Timeline possible considerations Likely UCMR4 analytes and methodology Possible differences in UCMR4

3 Unregulated Contaminant Monitoring Rule (UCMR) amendment in 1996 SDWA Monitors no more than 30 contaminants per 5- year cycle selected from the Contaminant Candidate List (CCL) 7500 Chemical and microbial contaminants these substances are not regulated but are known or anticipated to occur in public water systems Monitors representative sample of public water systems (PWSs) serving less than 10,000 EPA pays for these systems. Stores all data in National Occurrence Database (NCOD)

4 History UCMR 3 ( ) Current regulation monitoring for 30 contaminants (28 chemicals and 2 viruses) from UCMR 2 ( ) - UCMR 2 monitoring was managed by EPA and established a new set of 25 chemical contaminants sampled during UCMR 1 ( ) The SDWA Amendments of 1996 redesigned the UCM program to incorporate a tiered monitoring approach and required monitoring for 25 contaminants (24 chemicals and one bacterial genus) during UCM-State Rounds 1 & 2 ( ) State drinking water programs managed the original program and required public water systems (PWSs) serving more than 500 people to monitor contaminants.

5 UCMR Program Basics Tiered Monitoring 3 Tiers of Potential Monitoring Assessment Monitoring (AM) List 1 commonly used analytical techniques Screening Survey (SS) List 2 more recently developed techniques Pre-screen Testing (PST) List 3 new or specialized techniques (no List 3 monitoring Pre-screen Testing for UCMR 3 in Alabama)

6 In Alabama UCMR 3 Assessment monitoring (list 1) all systems serving more than 10,000 and selected systems serving 10,000 or fewer (19 in Alabama) There are 21 list 1 contaminants Screening Survey (list 2) systems greater than 100,000 plus 6 selected systems in the state There are 7 list 2 contaminants These contaminants will be monitored from January 2013 through December 2015 Samples collected at EP=entry point to the distribution system and MR=distribution system sample at maximum residence time for Chlorate and metals

7 2013 UCMR 3: Nationwide Monitoring Timeline 2014 Monitoring Activities 2015 Assessment Monitoring nationwide List 1 Contaminants All systems serving more than 10,000; 800 systems serving 10,000 or fewer ~1/3 systems (~1,400) ~1/3 systems (~1,400) ~1/3 systems (~1,400) *For UCMR3 most samples were collected during the middle year

8 Timing of Monitoring Source Type Groundwater Surface water or GUDI Monitor quarterly Sample 3 months apart Monitor twice Sample 5 to 7 months apart

9 Hormones by EPA method 539 (List 2) 17 B estradiol 17 a ethynylestradiol (ethinyl estradiol) 16 a hydroxyestradiol (estriol) equilin estrone testosterone 4 androstene 3,17 dione

10 VOC s by method Volatile Organic Compounds by EPA method ,2,3-trichloropropane 1,3-butadiene chloromethane (methyl chloride) 1,1-dichloroethane n-propylbenzene bromomethane (methyl bromide) sec-butylbenzene chlorodifluoromethane (HCFC-22) bromochloromethane (halon 1011)

11 Synthetic Organic Compounds by EPA method 522 1,4-dioxane by method 522

12 Metals by EPA method vanadium molybdenum cobalt strontium

13 Environmental Working Group (EWG) On December 20, 2010, the Environmental Working Group released this 24 page document. me6/chrome6_report_2.pdf

14 Environmental Working Group Document (cont.) EWG selected 35 cities from 23 states to analyze drinking water for hexavalent chromium. Large cities were selected as well as cities whose water utilities reported frequent detections of total chromium. Finished water samples were collected according to the same protocol from these 35 locations and analyzed by a California laboratory using EPA method This method had a detection limit of 0.02 ppb. The table of results (right) was taken from EWG s website.

15 Oxyhalide Anion by method chlorate

16 Method 522 Perfluorinated Compounds by EPA method 537 Perfluorooctane sulfonate (PFOS) Perfluorooctanoic acid (PFOA) Perfluorononanoic acid (PFNA) Perfluorohexane sulfonic acid (PFHxS) Perfluoroheptanoic acid (PFHpA) Perfluorobutane sulfonic acid (PFBS)

17 ata-summary_june-2015_508.pdf

18 UCMR4 Schedule June 25, 2014UCMR 4 Stakeholder Meeting and Webinar July 2015 Published UCMR 4 Proposal July 2015 through October 2015 Public Comment Final Rule Drafted beginning October 2015 ending in 2016 December 2016 Final Rule Published 2017 Implementation of Rule Laboratory Certifications UCMR 4 monitoring tentatively starting in Jan

19 UCMR 4 Candidates (List 1) Assessment Monitoring Metals by Method (ICP-MS) Germanium Manganese (CCL4 nomination) ntations.pdf

20 UCMR 4 Candidates (List 1) Assessment Monitoring Pesticides by Method (GC-MS) Disulfoton Ethoprop Alpha-Hexachlorocyclohexane trans-permethrin cis-permethrin Tribufos Profenofos Oxyfluorfen Vinclozolin Dimethipin (Method 530) ntations.pdf Tebuconazole

21 UCMR 4 Candidates (List 1) Assessment Monitoring Semi-Volatile Organic Compounds by Method 530 (GC-MS) Method in development as of June 2014 Quinoline o-toluidine Butylated hydroxyanisole Dimethipin (Method 525.3) ns.pdf

22 UCMR 4 Candidates (List 1) Assessment Monitoring Pesticides by Method 538 (DAI-LC/MS/MS) Dicrotophos methyl- Oxydemeton Methamidophos Acephate ns.pdf

23 UCMR 4 Candidates (List 1) Assessment Monitoring Alcohols by method 541 (GC/MS) In development as of June Butanol 2-Propen-1-ol 2-Methoxyethanol ntations.pdf

24 UCMR 4 Candidates (List 1) Assessment Monitoring Pharmaceuticals by method 542 (LC/MS/MS) In development as of June 2014 Erythromycin Triclosan (CCL4 nomination) ntations.pdf

25 UCMR 4 Candidates (List 1) Assessment Monitoring Carbonyl/Aldehydes by method (Fast GC) Formaldehyde Acetaldehyde ntations.pdf

26 UCMR 4 Candidates (List 2) Screening Survey Cyanotoxins by Method 544 (LC/MS/MS) Microcystin-LR Cyanotoxins by Method 545 (LC/ESI/MS/MS) Anatoxin-a Cylindrospermopsin Both methods in development as of June 2014 Applies to Surface Water and GUDI, possibly targeting summer months ns.pdf

27 Other Contaminants under Consideration Under Evaluation possibly list 3?: Legionella pneumophila Other contaminants under consideration: Nitrate/Nitrite (currently regulated) sampled in distribution not just entry point 4 Unregulated brominated DBPs (bromochloroacetic acid, bromodichloroacetic acid, dibromochloroacetic acid, and tribromoacetic acid, monitored at stage 2 DBPR compliance locations ntations.pdf

28 Potential Changes between UCMR3 and UCMR4? Compress the monitoring period to 2 years to make data available to help with regulatory determinations or maintain the monitoring period at three years to provide temporal coverage and accommodate lab capacity? Asssign analytes to specific months to ensure coverage of temporal vulnerability and variability? Year and months of monitoring assigned to small systems? Large systems may re define their year and month(s) of monitoring? ntations.pdf

29 EPA Contacts UCMR Sampling Coordinator: To upgrade current Central Data Exchange (CDX) to access Safe Drinking Water Accession and Review System (SDWARS): or call type UCMR 3 Remember that all passwords are purged every 90 days. At that time they must be upgraded to access SDWARS.