Wastewater OutletWastewater Treatment Plant

Wastewater Sample Collection

*** The wastewater section is under construction! ***

Wastewater samples are generally collected as composites.  Samples collected by NEL receive 2.5 mL 1+1 nitric acid per 250 mL.  Additional 2.5 mL aliquots may be added and noted on C-O-C as necessary to ensure pH <2.  Digestion is mandatory and filtration or centrifugation are sometimes necessary.

Drinking water samples are generally collected as grabs.

Samples collected by customers such as homeowners are preserved upon receipt at the laboratory with 5 mL conc. nitric acid (Trace Metal Grade) per liter.

Samples collected by NEL receive 2.5 mL 1+1 nitric acid per 250 mL .
Plastic containers supplied by NEL are rinsed with 1+1 nitric acid, 1+1 hydrochloric acid and triple rinsed with deionized water.

 

O&G, CN, ABN, PCB/Pest.1 liter glass / teflon-lined capsSupplied by Subcontractor
BOD TSS TDS1 liter plasticDetergent wash and 3X DI rinse
Metals0.1 – 1.0 liter plasticAcid washed and 3X DI rinse
VOA/VOC40ml VOA vials / teflon-lined capsSupplied by Subcontractor

 

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