The FOURTH UNREGULATED CONTAMINANT MONITORING RULE (UCMR4) has emerged through EPA’s Drinking Water Program for large public water systems of greater than 10,000 customers and a representative set of small water systems. This monitoring rule studies the analytical results of these systems for input for future regulatory requirements to ensure the safety of public water.
C & G Containers, Inc. (C & G) has each of the required/suggested collection containers and their specific preserving chemicals based on each of the EPA Methods within UCMR4.
The established cleaning protocols for the containers are per C & G’s written Standard Operating Procedures including containers subjected to temperatures of ≥ 400° C in eliminating interferences or contaminants. Our environmental chemists on staff use all verified preserving tools, dispensers and analytical balances to accurately dose each container by the described EPA method.
C & G uses a third party NELAC laboratory that has met the application and Proficiency Testing criteria for the Fourth Unregulated Contaminant Monitoring Rule Laboratory Approval program for Assessment Monitoring for all eight EPA Methods. In addition, submitted documentation that they are authorized by their primacy state to analyze TOC and/or bromide compliance monitoring samples under the Stage 2 Disinfectants and Disinfection Byproducts Rule.
C & G will provide a “Certificate of Analysis” form for your records representing each processed Lot with the preserving chemical(s) enclosed within each case of traceable processed containers. Analyte reporting limits are provided on each Certification form per EPA Method.
Compliant Globalized Harmonization System (GHS) labeling is provided on each and every container as applicable including the outside over-pack case.
CERTIFICATION OF PROCESSED CONTAINERS:
|
EPA METHOD |
NAME |
CONTAINER* |
PRESERVATIVE/CAS or CASRN NUMBER |
|
552.3 – GC/ECD |
Haloacetic acids |
60 mL Amber Glass |
1.Ammonium Chloride |
|
544 – LC/MS/MS |
Microcystins and Nodularin |
500 mL/16oz Amber Glass |
1. L-Ascorbic Acid – CASRN #-50-81-7 2. EDTA Trisodium Salt – CAS # 10378-22-0 3. 2-Chloroacetamide –- CAS # 79-07-24 4.Tris(hydroxymethyl)aminomethane Hydrochloride – CAS # 1185-53-1 and Tris(hydroxymethyl)aminomethane – CAS # 77-86-1 |
|
525.3 – GC/MS (SIM) |
Pesticides |
True 1 liter Amber Glass |
1. L-Ascorbic Acid – CASRN #-50-81-7 2.EDTA Trisodium Salt Hydrate CAS # 10378-22-0 3.Potassium Dihydrogen Citrate – CASRN – 866-83-1 |
|
530 – GC/MS (SIM) |
Semivolatile Organics |
True 1 liter Amber Glass |
1. L-Ascorbic Acid – CASRN #-50-81-7 2. EDTA Trisodium Salt – CAS # 10378-22-0 3. 2-Chloroacetamide –- CAS # 79-07-24 4.Tris(hydroxymethyl)aminomethane Hydrochloride – CAS # 1185-53-1 and Tris(hydroxymethyl)aminomethane – CAS # 77-86-1 |
|
EPA METHOD |
NAME |
CONTAINER* |
PRESERVATIVE / CAS or CASRN NUMBER |
|
546 – ADDA by (ELISA) |
Microcystins |
125 mL/4oz Amber Glass |
1. Sodium Thiosulfate – CASRN # 7772-98-7 |
|
545 – LC/MS/MS |
Cylindrospermopsin and Anatoxin |
125mL /4 or 40 mL vial Amber Glass |
1.Sodium Bisulfate – CASRN # 7681-38-1 2. Ascorbic Acid – CASRN #-50-81-7 |
|
541 – GC/MS (SIM) |
Alcohols |
250 mL / 8oz Amber Glass |
1.Sodium Sulfite – Anhydrous CAS # 7757-83-7 2.Sodium Bisulfate – CASRN # 7681-38-1 |
|
200.8 – Select Metals |
Germanium, Manganese |
250 mL WM Leak- Proof – HDPE |
1.Nitric Acid – Trace Metals Grade CAS # 7697-37-2 |
|
5310C – Std. Methods |
LL Total Organic Carbon Low Level (TOC) |
125 Amber Glass or 40 mL amber Glass Vial |
1.Sulfuric Acid – Trace Metals Grade – CAS # – 7664-93-9 or 2.Phosphoric Acid – ACS Grade – CAS # – 7664-93-9 |
|
300.0 – Ion Chromatography |
Bromide |
125 mL WM Leak- Proof – HDPE |
1. Not Preserved |
* Additional/optional containers sizes are available that allows for other sample volumes. Chemicals preservatives will then be adjusted and dosed per Method.
Please contact C & G Containers, Inc. through e-mail (quality@cgcontainers.com) or call 800.237.7123 to speak directly to a Project Manager to discuss your UCMR4 container needs.
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