40.
One or more poles with a blunt hook. (para 1-17d(l))
One or more "flutter boards." (para 1-17d(2))
One or more throwing ring buoys. (para 1-17d(3))
A throwing rope. (para 1-17d(4))
41.
b
(para 1-18b(l))
42.
Sodium thiosulfate; in use, periods of heaviest swimmer load; groups of
swimmers; refrigerated, 6. (para 1-19a(1), (2), (4))
43.
No. According to TB MED 575, NOT more than 15 percent of the samples
can show over 1.0 coliform organisms per 50 ml during any 30-day period.
In this case, only 4 samples could show more than 1.0 coliform organisms
(0.15 X 25 = 3.75 or 4). The 6 samples exceed the required limits.
(para 1-19b)
44.
b
(para 1-20a)
45.
Free available chlorine; combined chlorine; total chlorine. (para 1-21a)
46.
a. Coliform organisms
Entamoeba histolytica
Helminths causing schistosomiasis. (para 1-23)
b. A thorough sanitary survey, including bacteriological testing, must be
done. (para 1-24)
47.
b
(para 1-25; Table 1-2)
48.
2 lifeguard towers.
4 lifeguards.
1 boat. (para 1-26a)
END OF LESSON 1
MD0166
1-54