Miraleste Intermediate School

The data collected at Miraleste Intermediate School are presented here. Figure 1 is a schematic of the school site that shows the rooms that were tested for indoor radon colored according to the amount of radon in the rooms. Figure 1 also show the approximate locations of the sites where field gamma-ray measurements were made. Table 1 lists the results of the field gamma-ray measurements. Samples of the top five inches of soil were collected at two of the gamma-ray sites and Table 2 lists the results of analyses of those samples. Table 3 lists the results of the indoor radon measurements.

 

Image of Miraleste Intermediate School site with radon and gamma-ray sites.

Figure 1. Schematic of rooms at Miraleste Intermediate School showing indoor radon levels and sites at which gamma-ray measurements were made.

 

Table 1. Results of gamma-ray spectrometer measurements at Miraleste Intermediate School. Site locations are indicated in Figure 1 (e.g. location number 1 refers to MIP1). The column labeled "Group" identifies the group to which the measurement was assigned as a result of classification of the gamma-ray data.

 

Location

K

eU

eTh

Group

Latitude

Longitude

 

(%)

(ppm)

(ppm)

 

(degrees)

(degrees)

MIP1

0.5

1.6

1.0

1

33.7529

-118.3284

MIP2

0.8

2.2

2.4

1

33.7537

-118.3289

MIP3

0.6

1.5

1.3

1

33.7529

-118.3288

MIP4

1.3

3.6

4.3

3

33.7543

-118.3293

MIP5

0.6

1.8

1.6

1

33.7536

-118.3276

MIP6

1.6

2.9

4.3

3

33.7542

-118.3296

 

Table 2. Results of laboratory measurements of soil samples. The K, eU, and eTh concentrations were determined by a laboratory gamma-ray spectrometer and the field results are presented for comparison. Radon emanation fraction was determined as discussed in the section on methodologies.

 

Location

Laboratory

Field Spectrometer

Radon

Latitude

Longitude

 

K

eU

eTh

K

eU

eTh

Eman.

(degrees)

(degrees)

 

(%)

(ppm)

(ppm)

(%)

(ppm)

(ppm)

 

 

 

MIP1

0.5

2.8

2.0

0.5

1.6

1.0

0.17

33.7529

-118.3284

MIP6

1.0

3.4

3.7

1.6

2.9

4.3

0.15

33.7542

-118.3296

 

 

 

 

 

 

 

 

 

 

 

Bulk Density (g/cc)

Water Content

Porosity

 

 

 

MIP1

1.00

14.2%

0.62

 

 

 

MIP6

1.14

14.7%

0.57

 

 

 

 

Table 3. Results of indoor radon measurements in classrooms.

 

Room

Radon

Start

Stop

Number

(pCi/L)

Date

Time

Date

Time

Band

2.5

15-Feb-03

11:50

17-Feb-03

11:35

Blank

0.2

15-Feb-03

15:25

17-Feb-03

15:25

Drama

2.9

15-Feb-03

11:51

17-Feb-03

11:36

103

1.2

15-Feb-03

12:29

17-Feb-03

12:04

104

1.1

15-Feb-03

12:30

17-Feb-03

12:06

105

0.5

15-Feb-03

12:31

17-Feb-03

12:07

409

1.0

15-Feb-03

11:56

17-Feb-03

11:39

411

0.8

15-Feb-03

11:57

17-Feb-03

11:41

413

0.5

15-Feb-03

12:00

17-Feb-03

11:43

414

0.5

15-Feb-03

12:04

17-Feb-03

11:44

415

0.5

15-Feb-03

12:09

17-Feb-03

11:46

416

0.5

15-Feb-03

12:10

17-Feb-03

11:47

506

0.8

15-Feb-03

12:15

17-Feb-03

11:53

506

0.8

15-Feb-03

12:16

17-Feb-03

11:53

508

0.2

15-Feb-03

12:14

17-Feb-03

11:51

509

0.2

15-Feb-03

12:13

17-Feb-03

11:49

612

0.9

15-Feb-03

12:21

17-Feb-03

11:57

613

0.8

15-Feb-03

12:22

17-Feb-03

11:58

614

0.7

15-Feb-03

12:24

17-Feb-03

12:00

615

0.3

15-Feb-03

12:26

17-Feb-03

12:01

TAB

1.6

15-Feb-03

11:47

17-Feb-03

11:33

TAB

1.6

15-Feb-03

11:48

17-Feb-03

11:33

Test Center

0.3

15-Feb-03

12:19

17-Feb-03

11:55

 

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