-
FO ere =
A
Pheer
.-
A
7
|
7
Mw
-
RE ieatearematereatiets. 7) ea Prisha Te Pe eos Oe
PE Ee weraeater:fey Nee ceasese toki
:
queer TOME
thks 522
Be Br
eee
MEASUREMENTS OF RADON CONCENTRATIONS
Flask Results
10-15 e¢/l
Prec.
Date
Time
57th & Columbus Ave.*
None
12/4/56
1425
230
19th & Ninth Ave. *
None
Prec.
12/4/56
12/14/56
1459
1115
490
130
Vandam Street & 6th Ave.* None
12/4/56
1520
320
None
12/4/56
1541
2ko
None
12/4/56
1626
70
61st & Ninth Ave.*
None
12/11/56
1500
120
89th & Central Park W.
None
12/18/56
1425
20
1427
190
Location
Street Samples
.
.
E. Housten & Allen Sts.*
68th between 2nd & 3rd |
Avenues*
|
|
Duane St. & W. Broadway:
None
12/18/56
1505
1506
- 1507
70
150
110
E. 87th St. & First Ave.
None
12/26/56
1342
160
1344
210
1432
1433
100
50
|
|
W. 120th & Broadway
.
;
,
12/26/56
None
Prec.
7
230
60
100
1/29/57
|
|
415
1416
1417
80
Prec.
-
j
|
1426
-
1/23/57
1343
1434
150
1339
100
100
1338
107th & Second Ave.
Prec.
1/23/57
1410
2ist & Third Ave.
Prec.
1/23/57
1450
ekth & Tenth Ave.
Prec.
1/23/57
1520
.
225
CO?
50
1412
1452
1521
80
120
120
100
90
110
ul7s