Environmental Compliance Inspector Grade 1 || 100%
Accurate Answers.
An industry operating an 8-hour shift 5 days a week generates 100000 gallons of wastewater
per shift. Their pretreatment system has a capacity of 150 gallons per minute. How long must
the pretreatment system operate to process the wastewater generated each day? correct
answers 11.1 hrs
What is the average detention time, in minutes, for a 40,000 gpd flow going through a 1500
gallon interceptor. correct answers 54 minutes
What volume of spill containment capacity in gallons is needed for the following tanks if a 12
inch rainfall occurs during a 24 hour period on a common 200 foot by 200 foot spill
containment pad? Assume that 100% containment of all tank capacity is needed. correct
answers
tank 1: 6ft wide, 6ft long 6ft high correct answers
tank 2: 4ft wide, 20 ft long, 3 ft high correct answers
tank 3: 8ft in diameter, and 9ft high. correct answers 305,992 gallons
A solution with a ph of 5 has a concentration of hydrogen ions that is how many times higher
than a solution with a ph of 7? correct answers 100 times higher
A solution of ferrous chloride used at a pretreatment facility contains 30 percent ferrous
chloride and has a density of 1.33 g/ml. How many grams of ferrous chloride are in one liter
of the solution? correct answers 399 grams per liter
What is the normality of a sodium hydroxide solution of 25 ml if a .01 N sulfuric acid
solution neutrilizes 100 ml of the NaOH solution? correct answers .0025 N
The hardness determination measures? correct answers calcium and magnesium
Sodium Hydroxide is commonly referred to as: correct answers Caustic soda
an industry has a wastewater discharge of 10000 gallons per day containing 5 mg/L of
copper. What is the industry's mass emission rate of copper in pounds per day? correct
answers .42 lb/day
An industry has five sewer connections with the following discharges: correct answers
300gpd, 75gpd, 725gpd, 1200gpd, 200gpd correct answers
A flow weighted composite sample of 5 liters is desired. How much milliliters of sample
from each connection should be composited? correct answers 600, 150, 1450, 2400, 400
, You have been directed to collect a 12 gour flow proportional sample. Using the following
data, select the volume of sample to be collected at 12:00 pm if a total sample volume of one
liter is required. correct answers
6am correct answers 5.8mgd
7am correct answers 6.4mgd
8am correct answers 6.8mgd
9am correct answers 7.2
10am correct answers 6.8
11 correct answers 7.2
12pm correct answers 9.0
1pm correct answers 9.6
2pm correct answers 8.8
3pm correct answers 8.2
4pm correct answers 7.6
5pm correct answers 6.8 100ml
Lead acetate paper is used to determine the presence of: correct answers Hydrogen sulfide
A chain of custody form: correct answers Is the ability to trace sample possession and
handling from collection through analysis.
The following results for nickel in mg/L, were obtained from daily composite samples. Select
the correct mean, median, and range of values from the list. correct answers
6.7, 8.6, 9.0, 8.9, 9.0, 8.5, 8.4, 8.7, 6.6, 8.8, 7.2, 8.5, 9.3, 8.9 correct answers Mean=8.4
median=8.7 correct answers
range=2.7 correct answers
In normality distributed population of sampling data, what percent of the data points will fall
within one standard deviation. correct answers 68.3
What kind of container and preservative is required for samples to be analyzed for oil and
grease? correct answers Glass, cool 4 degrees C, H2SO4 to ph less than 2
Head meausurements on weirs should be taken at a distance upstream of the weir of ____
times the maximum expected head to be measured. correct answers 4
Accurate Answers.
An industry operating an 8-hour shift 5 days a week generates 100000 gallons of wastewater
per shift. Their pretreatment system has a capacity of 150 gallons per minute. How long must
the pretreatment system operate to process the wastewater generated each day? correct
answers 11.1 hrs
What is the average detention time, in minutes, for a 40,000 gpd flow going through a 1500
gallon interceptor. correct answers 54 minutes
What volume of spill containment capacity in gallons is needed for the following tanks if a 12
inch rainfall occurs during a 24 hour period on a common 200 foot by 200 foot spill
containment pad? Assume that 100% containment of all tank capacity is needed. correct
answers
tank 1: 6ft wide, 6ft long 6ft high correct answers
tank 2: 4ft wide, 20 ft long, 3 ft high correct answers
tank 3: 8ft in diameter, and 9ft high. correct answers 305,992 gallons
A solution with a ph of 5 has a concentration of hydrogen ions that is how many times higher
than a solution with a ph of 7? correct answers 100 times higher
A solution of ferrous chloride used at a pretreatment facility contains 30 percent ferrous
chloride and has a density of 1.33 g/ml. How many grams of ferrous chloride are in one liter
of the solution? correct answers 399 grams per liter
What is the normality of a sodium hydroxide solution of 25 ml if a .01 N sulfuric acid
solution neutrilizes 100 ml of the NaOH solution? correct answers .0025 N
The hardness determination measures? correct answers calcium and magnesium
Sodium Hydroxide is commonly referred to as: correct answers Caustic soda
an industry has a wastewater discharge of 10000 gallons per day containing 5 mg/L of
copper. What is the industry's mass emission rate of copper in pounds per day? correct
answers .42 lb/day
An industry has five sewer connections with the following discharges: correct answers
300gpd, 75gpd, 725gpd, 1200gpd, 200gpd correct answers
A flow weighted composite sample of 5 liters is desired. How much milliliters of sample
from each connection should be composited? correct answers 600, 150, 1450, 2400, 400
, You have been directed to collect a 12 gour flow proportional sample. Using the following
data, select the volume of sample to be collected at 12:00 pm if a total sample volume of one
liter is required. correct answers
6am correct answers 5.8mgd
7am correct answers 6.4mgd
8am correct answers 6.8mgd
9am correct answers 7.2
10am correct answers 6.8
11 correct answers 7.2
12pm correct answers 9.0
1pm correct answers 9.6
2pm correct answers 8.8
3pm correct answers 8.2
4pm correct answers 7.6
5pm correct answers 6.8 100ml
Lead acetate paper is used to determine the presence of: correct answers Hydrogen sulfide
A chain of custody form: correct answers Is the ability to trace sample possession and
handling from collection through analysis.
The following results for nickel in mg/L, were obtained from daily composite samples. Select
the correct mean, median, and range of values from the list. correct answers
6.7, 8.6, 9.0, 8.9, 9.0, 8.5, 8.4, 8.7, 6.6, 8.8, 7.2, 8.5, 9.3, 8.9 correct answers Mean=8.4
median=8.7 correct answers
range=2.7 correct answers
In normality distributed population of sampling data, what percent of the data points will fall
within one standard deviation. correct answers 68.3
What kind of container and preservative is required for samples to be analyzed for oil and
grease? correct answers Glass, cool 4 degrees C, H2SO4 to ph less than 2
Head meausurements on weirs should be taken at a distance upstream of the weir of ____
times the maximum expected head to be measured. correct answers 4
