Encyclopedia of Environmental Science and Engineering, Volume I and II

1056 RADON

BERGEN

PASSAIC

MORRIS

UNION

ESSEX

MONMOUTH

SALEM

GLOUCESTER

CAMDEN

BURLINGTON

Tier 1-Test as soon as practical

Tier 2- Test within one year

Tier 3 - Test if concerned

New Jersey Department of

Environmental Protection

Testing Recommendation

WARREN

HUNTERDON

MIDDLESEX

MERCER

ATLANTIC

CAPE MAY

CUMBERLAND

SUSSEX

SOMERSET

OCEAN

HUDSON

FIGURE 6 New Jersey Department for Environmental Protection, preliminary recommenda-

tions for radon testing.

Under these conditions, radon levels on upper floors have

been observed to equal or, in a few cases, even surpass

basement level radon concentrations.

It should be noted that the statewide study was designed

to locate areas of potential radon problems and hence the

area sampling density was varied depending on anticipated

results. Approximately 20% of the total number of samples

were set aside for use later in the sampling period to better

define potential problem areas identified in the initial sam-

pling. Hence, the sampling is somewhat biased in terms of

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