ENVS 4000 Assignment I - Hazard Assessment - updated
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Page 1 of 6 ASSIGNMENT I HAZARD ASSESSMENT ENVS*4000 Toxicological Risk Characterization This assignment is worth 10% of your final grade and should be submitted to the Courselink dropbox by 11:59 pm on Sunday, January 28
th
, 2024 (before midnight)
. The total marks for this assignment are 61. You are advised to do any calculations etc., and even the entire answer, in rough before writing/typing it on the answer sheet. Marks will be deducted for poor grammar, syntax and spelling as well as for unclear or disorganized answers. Use only the space provided to respond. Name: __________________________________ Student Number: __________________________ HAZARD ASSESSMENT: PESTICIDES 1) You have been hired by Manitoba Sustainable Development to do Tier 1 Hazard Quotient (HQ) assessments for particular herbicides to primary producers, specifically algal and aquatic macrophyte species. You are provided with exposure data for several rivers in Manitoba [1], along with effects data for these chemicals [2, 3] (available in CourseLink). Use the effect measure from the most sensitive macrophyte (aquatic plant) and algae species for each herbicide. Do not use NOEC or LOEC data in your assessments.
Based on the information provided to you, fill in the following tables: (40 marks)
Macrophyte Assessments
(each box is worth 0.25 marks)
Chemical:
Metolachlor Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Assinib. R. Pembina R. Seine R. Roseau R. Chemical:
Atrazine Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Rat R. Red R. Seine R. Roseau R.
Page 2 of 6 Chemical:
2,4-D Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Assinib. R. Pembina R. Seine R. Roseau R. Chemical:
Alachlor Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Assinib. R. Pembina R. Rat R. Red R. Algal Assessments Chemical:
Metolachlor Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Seine R. Roseau R. Rat R. Red R. Chemical:
Atrazine Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Seine R. Roseau R. Assinib. R. Pembina R.
Page 3 of 6 Chemical:
2,4-D Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Seine R. Roseau R. Rat R. Red R. Chemical:
Alachlor Exposure Characterization Effects Characterization Hazard Characterization Location Conc. (µg/L) Plant Species Effect Measure Toxicity (µg/L) HQ Seine R. Roseau R. Assinib. R. Pembina R. 2) Based on the hazard quotients you have calculated above; do you anticipate any adverse effects for macrophytes or algae in these rivers from these herbicides? Be specific. (3 marks)
3) When giving your presentation to the public, you are challenged about the use of plant and algal species that are not native in your assessment. Give two brief counterpoints that might allay their fears. (2 marks)
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Generic name
Brand name
Manufacturer
National Drug Code (N D C) #
Lot number (control number)
Drug form
Dosage strength
Usual adult dose
Total amount in vial, packet, box
Prescription warning
Expiration date
0006-0575-612
$
Janumet™
(sitagliptin/metformin HCI)
tablets
50 mg/500 mg
575
Rx only
60 Tablets
Lot
PL
P.Pharmaceuticals
NDC0006-0575-61
Each tablet contains 64.25 mg sitagliptin
phosphate (equivalent to 50 mg sitagliptin)
and 500 mg metformin hydrochloride
Store at 20-25°C (68-777), excursions
permitted to 15-30°C (59-86°F).
See USP Controlled Room Temperature.
See accompanying circular for dosage information.
9737102
60 No.6747
|
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true or false
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Statement one
A circular safety sign with
a red band enclosing a
crossed out symbol with a
white background defines
a mandatory action to be
taken
Questi
28
Questi
29
Questi
30
Questi
Statement two
The safe condition sign is
white on a green
background. The actual
shape of the sign will vary
a) Statement one
is incorrect and
statement two is
correct
b) Statement one
and two are
correct
c) Both
statements are
incorrect
d) Statement two
is incorrect and
statement one is
correct
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actclass.co.uk
31
Questi
32
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