N.J. Admin. Code § 8:50-4.1
Current through Register Vol. 56, No. 21, November 4, 2024
Section 8:50-4.1 - Determination of maximum contaminant levels (MCLs) for child care centers and educational facilities(a) The Department will determine MCLs identified in child care centers and educational facilities using site-specific data reported in the IEHA and/or additional data collected and analyzed by the Department, by calculating cancer and non-cancer risk using the formulae in (b) below and corresponding to the following: 1. The risk for cancer shall be less than one in 10,000 (10[LESS THAN]-4[GREATER THAN]); and2. The risk for non-cancer health effects shall be a target hazard quotient of less than one.(b) The Department shall evaluate site-specific data to determine risk using the following formulae: 1. For volatile organic compounds in air: i. For cancer health effects: | (C x ET x EF x IR x ED) |
| LECR | = | ---------------------- | x CPSi |
| (AT x BW) |
Where:
LECR = Lifetime excess cancer risk
AT = Averaging time
BW = Body weight
C = Contaminant concentration
CPSi = Cancer slope factor
ED = Exposure duration
EF = Exposure frequency
ET = Exposure time
IR = Intake rate
ii. For non-cancer health effects: | C x EF x IR |
| THQ | = | ------------------------------- |
| RfD x BW x AT x 1,000 micrograms per milligram |
Where:
THQ = Target hazard quotient
AT = Averaging time
BW = Body weight
C = Contaminant concentration
EF = Exposure frequency
IR = Intake rate
RfD = Reference dose
2. For cancer and non-cancer health effects of asbestos, 70 structures per millimeter squared (s/mm[LESS THAN]2[GREATER THAN]) or 0.02 structures per cubic centimeter (cc) of air.3. For radon, for both cancer and non-cancer health effects, less than four picoCuries per liter (pCi/l).4. For non-cancer health effects of dust (excluding lead): | C x IR x DEF |
| THQ | = | ------------ |
| BW x RfD |
Where:
THQ = Target hazard quotient
BW = Body weight
C = Contaminant concentration
DEF = Dust exposure factor
IR = Intake rate
RfD = Reference dose
5. For lead, for both cancer and non-cancer health effects, as specified in the Lead Hazard Evaluation and Abatement Code at 5:17-9.1(f). N.J. Admin. Code § 8:50-4.1