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NJ Lead Exam
| Question | Answer |
|---|---|
| Types of abatement | Removal - most expensive Replacement Enclosure (put wall over it) Encapsulation - cheapest (elastomeric paint) |
| What defines lead based paint | 1 mg/cm^2 5,000 ppm |
| How to convert LBP ppm to % | divide ppm by 10,000 |
| EPA number for soil abatement | 400 ppm - bare soil play area (use interim control) 1200 ppm - bare soil non play area (use interim control) 5000 ppm - requires permanent abatement |
| How much lead exposure do infants get from water | 40-60% |
| How much lead exposure do children get from water | 20% |
| AAS - Atomic Absorption Spectrometry | gold standard used to detect lead in water, soil, blood, urine, etc vaporizes samples and reads the fumes |
| AIHA stands for what and what do they do | American Industrial Hygiene Association ensure that work-related occupational and environmental health and safety hazards are anticipated and eliminated or controlled |
| ASV stands for what and what does it do | Anodic Stripping Voltammetry uses electric voltage to test samples (chemical test) basically tests lead in water |
| ELPAT stands for what and what does it do | environmental laboratory proficiency analytical testing basically they do tests or calibration or whatever to ensure that the labs equipment is accurately measuring samples this allows them to be considered a certified lab |
| NIST stands for what and what does it do | National Institute for Standards and Technology creates standards to calibrate XRF instruments |
| How far bystanders should be from XRF | at least 10 feet away |
| How long does lead stay in the bones | up to 30 years |
| Who replaces the radiation source in an XRF | the manufacturer |
| Components of windows and stairs (just be able to recognize these) | windows: apron, muntin, stile, parting beads stairs: newel post, stringer, baluster |
| idk, just know formula for substrate collection | corrected lead concentration = apparent lead concentration - substrate equivalent lead |
| EPA clearance levels floors, sills, troughs | floors: 5 ug/ft^2 sills: 40 troughs: 100 |
| what are the 2 types of chemical tests and what color do they turn | sodium rhodizonate - red sodium sulfate - black |
| Occurrence vs claims | occurrence will pays at any point in time claims only pays when you actively have their policy |
| BLL of concern in children | 3.5 ug/dl |
| Where are the highest levels of lead in air found | near lead smelters |
| what has helped decrease lead levels in air the most | taking lead out of gasoline |
| what do we put dust wipe samples in | 50ml polyethylene centrifuge tubes |
| fine for violating NJAC 8:62 as a LIRA | $1000 1st time $5000 each time after |
| types of XRF readings | (+) (-) inconclusive - basically a threshold around 1 mg.cm^3 where it can't really say if it's positive or negative |
| who can collect dust samples | risk assessors and dust sampling techs under RRP |
| how do we can with HEPA | vacuum wet vacuum |
| what is used to test XRF calibration limits | PCS - performance characteristic sheet |
| what do you need to take the XRF over states lines | general licensing |
| how much water needed for lead in water test | 250 mg |
| water testing how to tell if it's from the faucet or pipes | 1st draw is high = faucet 2nd draw is high/higher = pipes |
| how to perform lead soil sampling | 1/2" deep 1-3 feet apart 3-10 spots |
| how far is the dripline of a house | 3 feet |
| sample container for soil should be what | plastic zip type resealable bags 1 quart to 1 gallon (1-4 liters) or a plastic centrifuge with tight fitting cap |
| who created PEL standards | OSHA |
| goal of Title X | protect families and young children from lead hazards/exposure in housing built before 1978 |
| RCRA main goals | solid hazardous waste |
| how long do you need to keep RCRA and RRP paperwork | 3 years |
| DCA dust levels for non-childhood floor sample | 5 ug/ft^2 |
| HUD covers what type of housing | pre-1978 that is federally funded |
| is methylene chlorine legal | no |
| what helps absorb lead in the body | calcium iron vitamin C |
| EPA de minimus work surface number | 6 ft^2 interior 20 ft^2 exterior |
| HUD de minimus work surface number | 2 ft^2 interior 20 ft^2 exterior |
| 1st & 2nd water draw is high...3-4 is low...where is the lead | in the faucet and in the line of the house...call the water company (doesn't seem right but is best answer) |
| lead is found in the soil of the vegetable garden...what do you do | warn them not to eat them |
| action level for lead in water | 15 ppb (ug/liter) |
| daycare has soil that is over the limit..what do you do | soil replacement |
| HUD guidelines....5 things...what type of inspection is it | idk just put lead paint assessor |
| parts of stairs (just recognize these) | newel, baluster, outer string |
| highest allowed temp for heat gun | 1,100 F |
| who determines inconclusive testing results for radiation machines | performance characteristic sheet |
| what test is not used for abatement conditions | chemical spot testing |
| 120 units in multi house dwelling...must test 47...random number is .51...what number do you test | 120*.51 = 61.2 (apartment 61) |
| you sampled a sill that is 3"*12". the lab gives results of 150 ug/in^2. what is lead concentration per square foot | (3*12)/12 = 3 .... 150/12 = 12.5 ......3*12.5 = 37.5 <-- answer |
| labs must be registered under who | NLLAP |
| what is not included in the lead inspection report | abatement options? |
| what is not a goal title X | all homes lead free by 2015 |
| testing drip line is important why | deteriorated paint from house can fall and settle |
| paint sample gets an average of 1.2...substrate calculations is .05. What is the corrected value | .05-1.2 = 1.15 <-- answer |
| Who is responsible for replace the XRF radiation source | manufacturer |
| testing combination when conducting XRF readings | room equivalent, component, substrate |
| is two coats of paint considered an abatement for stairs | no |
| size of paint chip sample needed for lbp | 2"x2" |
| bare soil clearance/hazard level | 400 ppm |
| is specialized cleaning part of an interim control | yes |
| difference between a lead hazard screen and risk assessment | screen only assesses deteriorated paint |
| when do you change gloves | between every sample |
| when do you submit a blank | always |
| something about the breakdown of lead giving off radiation is called what? | 1) pryolysis 2) florencense .... think the answer is flourencse |
| definition of accessible surface | interior AND exterior surface easily chewable/mouthed by child OR is it only an interior surface idkkk <-- check definition to verify answer |
| you have a dust wipe sample 2" x 2". The lab gives you results saying there is 150 ug of lead. How much lead per square foot? | idk none of the answers were mathing. I put 150 ug/square foot because I think labs always report back in feet squared |
| what is not a major source of lead in food: pottery, crystal, solder on cans, lead lining of fridge | i put lead lining of fridge |
| someone with a nutrition deficiency would most likely have lead stored where? | in the GI tract which goes into the blood stream (there was an answer about the bones and white blood cells <-- this answer was incorrect because lead affects RBC's) |
| when not to do lead dust clearance? | when there is visible dust on surfaces |
| where would we not do soil testing | on undisturbed ground (because if nobody is walking here it doesn't really matter. we care about areas that are used/touched) |
| where would most lead be found outside? | around the drip line of the house |
| where would we test for lead dust? | idk I think the answer is child bedrooms....other possibilities were windows and walls but bedroom seemed most logical |
| lead is found in the garden soil. what do you tell the residents about the vegtables? | idkk I think the answer to RECOMMENED they don't eat the vegtables. we can't say for certain that each and every veg. contains lead unless we test them every time which we won't be doing |
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