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Cotter Corporation (N.S.L.)
Cañon City Milling Facility
Cañon City, Colorado
Procedure
Sampling Equipment
Decontamination
Number: SOP-
E-044
Page 4 of 5
Revision: 1
Date: --/--/--
8.2.1 If decontamination is performed at a site other than the location where the
equipment was used, carefully transport equipment to the decontamination
area in a manner that minimizes the spread of contaminants.
8.3 For water quality monitoring, use the following sequence for equipment used with
organic and inorganic target analytes.
8.3.1 Remove any gross contamination such as loose soil with brush and tap
water.
a. Non-dedicated pumps will have solution pumped through it and all
associated sampling lines
b. Filtration equipment will be disassembled and washed with a
bristle brush.
c. Stainless, Teflon or other containers used for sampling will be
washed with a bristle brush.
8.3.2 Wash all sampling equipment with a non-Phosphate, non-ionic cleaning
solution containing EDTA, example, Liquinox
8
in concentrations
recommended by the manufacture.
8.3.3 Rinse or pump 0.1 N HCL (hydrochloric acid solution) or 0.1 N HNO
3
(nitric acid solution) through or on equipment.
8.3.4 Rinse or pump tap water through or on equipment thoroughly.
8.3.5 Rinse or pump Type 2 reagent water on or through equipment.
8.3.6 Measure the conductivity of the Type 2 water rinse.
a. If measured conductivity is <50 uS/cm the decontamination is
deemed adequate, otherwise repeat the cleaning procedure.
8.3.7 Store equipment to prevent contaminating equipment for next use.
8.4 For vegetation, soil or sediment sampling use the following sequence for
equipment decontamination.
8.4.1 Remove any gross contamination such as loose soil, sediment or
vegetation with brush and then rinse with Type 2 reagent water.
8.4.2 Wipe dry with paper towel or let air dry before moving to next sampling
location.
8.4.3 Store equipment to prevent contaminating equipment for next use.