Submitting Samples for Time-Sensitive Parameters - Amazon Web ...

Central Laboratory Guidance:

NNNNNNNN

Submitting Samples for Time-Sensitive Parameters  Hours of Operation - Central Laboratory:: 8:00 A.M. until 5:00 P.M., Monday through Friday (except for state holidays). 

Time-Sensitive Parameters (with Associated Lab Units): Parameters with 24-Hour Hold Time:

Lab Unit conducting Analysis

Chlorophyll a

Wet Chemistry

Fecal Coliform and Total Coliform*

Microbiology

Hexavalent Chromium (Cr VI)

Wet Chemistry

Parameters with 48-Hour Hold Time:

Lab Unit conducting Analysis

BOD5 - Biochemical Oxygen Demand

Microbiology

Color: ADMI and Platinum Cobalt (PtCo)

Wet Chemistry

MBAS

Wet Chemistry

NO2 – Nitrite; NO3 – Nitrate (unless as NO3NO2)

Nutrients

PO4 - Orthophosphate

Nutrients

Turbidity

Microbiology

*If Fecal and Total Coliform are for compliance, the hold time is 6 hours from time of collection.

 Restrictions on Sample Submittal for Time-Sensitive Parameters:

Monday through Thursday: After 3:00 P.M. 

Time-Sensitive Samples Not Accepted (except with notification)

Friday: After 1:00 P.M. 

Time-Sensitive Samples Not Accepted

State Holidays & State Holiday Weekends 

Schedule on Lab website: http://portal.ncdenr.org/web/wq/lab/ops/samples



Work Day before Holiday: All Time-Sensitive Samples Not Accepted, except for Chlorophyll and Turbidity, which may be submitted until 1:00 P.M.

N.C. Division of Water Resources-Water Sciences Section-Central Laboratory, 4405 Reedy Creek Road, Raleigh, NC 27607 Telephone: 919-733-3908; Date modified: April 2014