Table 3-3.  M&O contractor site environmental surveillance program summary (2002).

Locations and Frequency

Minimum Detectable Concentration

Medium Sampled

Type of Analysis

Onsite

Offsite

Air (low volume)

Gross alpha

13 weekly

4 weekly

1 x 10^-15 μCi/mL

Gross beta

13 weekly

4 weekly

5 x 10^-15 μCi/mL

Specific gamma

13 quarterly

4 quarterly

—^a

²³⁸Pu

13 quarterly

4 quarterly

2 x 10^-18 μCi/mL

²⁴¹Am

13 quarterly

4 quarterly

2 x 10^-18 μCi/mL

⁹⁰Sr

13 quarterly

4 quarterly

2 x 10^-14 μCi/mL

Particulate matter

13 quarterly

4 quarterly

10 μg/m³

Air

(atmospheric moisture)

Tritium

2 to 4 per quarter

2 to 4 per quarter

1 x 10^-11 μCi/mL (water)

Air

Nitrogen oxides

Continuous

— ^b

NA^c

Air

Sulfur dioxide

Continuous

—

NA

Soil

Specific gamma

Varies annually^d

—

0.1 pCi/g

Pu isotopes

Varies annually

—

0.003 pCi/g

²⁴¹Am

Varies annually

—

0.003 pCi/g

⁹⁰Sr

Varies annually

—

0.06 pCi/g

Vegetation

Specific gamma

Varies annually^d

—

1 x 10^-7 μCi/g

²³⁸Pu

Varies annually

—

1.2 x 10^-8 μCi/g

^239/240Pu

Varies annually

—

6 x 10^-10 μCi/g

²⁴¹Am

Varies annually

—

1.2 x 10^-8 μCi/g

⁹⁰Sr

Varies annually

—

1.2 x 10^-8 μCi/g

Drinking Water

Gross alpha

12 quarterly

—

1 pCi/L

Gross beta

12 quarterly

—

4 pCi/L

Tritium

12 quarterly

—

1,000 pCi/L

⁹⁰Sr

4 quarterly

—

2 pCi/L

Other radionuclides

12 quarterly

—

^a

Volatile organics

10 annually/ 4 quarterly

—

0.5 ppb

Semivolatile organics

12 triennially

—

0.5 ppb

Inorganics

12 triennially

—

0.5 ppb

Direct Radiation Exposure (TLDs)

Ionizing radiation

135 semiannually

13 semiannually

5 mR

Direct Radiation Exposure

(mobile radiation surveys)

Gamma radiation

Facilities and

INEEL roads^e

—

NA

a.     Minimum detectable concentration for gamma spectroscopic analyses varies depending on radionuclide.

b.     Denotes that the M&O contractor does not collect samples from offsite locations for this parameter.

c.     NA = not applicable.  This information is recorded as an instrument reading at the time of inspection.

d.     Onsite soil sampling is performed each year at different onsite facilities on a rotating two-year schedule.

e.     Surveys are performed each year at different onsite facilities on a rotating three-year schedule.  All INEEL roadways over which waste is transported are surveyed annually.