Wastewater Analysis
Analytical methods utilized by Colorado Analytical Laboratory satisfy NPDES requirements.  Metals are analyzed by ICP-MS and Atomic Absorption.  The lowest detection levels are obtained by ICP-MS and are normally in the ppb range. The most commonly tested parameters include the following:

 

GENERAL CHEMISTRY
METHOD*

 

METALS
METHOD*
Acidity
SM 2310-B
Arsenic
EPA 200.8

Alkalinity

 

 

SM 2320-B

 

Aluminum

EPA 200.8

Total Coliform (MPN-Wastewater)

SM 9221-B

 

Antimony

EPA 200.8

Fecal Coliform (MPN-Wastewater)

SM 9221-E

 

Barium

EPA 200.8

Boron

 

 

SM4500B-B

 

Beryllium

EPA 200.8

Biochemical Oxygen Demand

SM 5210-B

 

 

 

Chemical Oxygen Demand

SM 5220-D

 

Cadmium

EPA 200.8

Chloride

 

 

 EPA 300.0

 

Calcium

SM 3111-B

Conductance

 

EPA 120.1

 

Chromium

EPA 200.8

Cyanide

 

 

SM4500-CN/C/E

 

Cobalt

EPA 200.8

Carbon (TOC)

 

EPA 415.1

 

Copper

EPA 200.8

 

 

 

 

 

 

 

Dissolved Oxygen

 

SM4500-G

 

Iron

SM 311-B

Fluoride

 

 

SM4500-F-C

 

Lead

EPA 200.8

Hardness-Total

 

SM2340-B

 

Magnesium

SM 3111-B

Langlier Index

 

SM2330

 

Manganese

EPA 200.8

 

 

 

 

 

Mercury

EPA 245.1

Nitrogen - TKN

 

SM 4500-N org B

 

Nickel

EPA 200.8

Nitrogen - Total

 

EPA 351.3(mod.)

 

Potassium

EPA 200.8

Nitrogen - Nitrate

 

EPA 300.0

 

 

 

Nitrogen - Nitrite

 

EPA 300.0

 

Selenium

EPA 200.8

Nitrogen - Ammonia

 

SM4500-NH3-G

 

Silicon

EPA 200.8

 

 

 

 

 

Silver

EPA 200.8

Oil and Grease (Hexane)

EPA 1664(A)

 

Sodium

SM 3111-B

pH

 

 

SM4500-H-B

 

      

Phenols

 

 

EPA 420.1

 

 

 

Phosphate - Ortho

 

EPA 300.0

 

Thallium

EPA 200.8

Phosphate - Total

 

EPA 365.2

 

Vanadium

EPA 200.8

 

 

 

 

 

Zinc

EPA 200.8

Solids - Filterable (TDS)

SM2540-C

 

 

 

Solids - Non-filterable (TSS)

SM2540-D

 

 

 

Solids - Volatile

 

SM2540-E

 

Sampling Services

 

Solids - Total

 

SM2540-B

 

Auto-sampler (Composite/Grab )

Sulfate

 

 

EPA 300.0

 

Sample  P/U – Denver Metro

Sodium Adsorption Ratio

USDA 60 6(20b)

 

Via Courier

Turbidity

 

 

SM2130-B

 

 

Total Residual Chlorine

SM4500-CL-C

 

 

 

 

 

 

 

 

*The methods listed are the most common used by CAL. Other methods are available upon request.