Six sources on one town's PFAS notice, each placed by type and by the single thing it can support, make up this SC200 source credibility review for Unit 4. Searches like "sc 200 unit 4 assignment example", "sc200 unit 4 sample" and "sc200 unit 4 example" land here.
What a finished SC200 Unit 4 source credibility review looks like
A six-row table fills the first page, and a paragraph per source follows. Each row answers five questions in fixed order: document type, producer and funder, whether original measurements appear in it, what it can establish, and what lies beyond it. The utility's annual water quality report establishes which wells tested high and in which quarters. The federal rule page, cited with an access date, establishes the 2024 limits of 4 parts per trillion each for PFOA and PFOS and records that parts of the rule were reopened in 2025. A peer-reviewed review supports population-level associations with specific health effects. A trade association fact sheet, a plaintiff-recruiting law firm page and a local television segment each take a narrower, stated role.
How a SC200 Unit 4 example is structured
The review is organized by type, not by how persuasive a source feels, and its opening explains why: the town's question has three parts, what is legal, what is in the water, and what the chemicals do, and different kinds of document answer each. Within the table, the utility's own test results sit in the first row, since every later row is read against them. The two interested parties, the trade association and the law firm, are kept rather than discarded, each assigned the one thing it can document, an industry position and a claim to be traced. The news segment is used for what residents were told and when. The review closes by naming the three sources the later paper will lean on and the ones it will cite only for context, with every regulatory reference dated because the rule has been changing.
Three questions, three kinds of source
Legal limit, local level and health effect are separated at the start, which explains why no single document could answer the town's question alone.
Local readings as the anchor row
The utility report is the only source that measured this town's water, so its figures, well by well and quarter by quarter, sit first in the table.
Interested parties kept, not thrown out
The trade association and the law firm each stay in, limited to what they can document: a stated industry position and a claim worth tracing to its origin.
A regulation with a date on it
Because the federal rule was set in 2024 and partly reopened in 2025, the review names the version it describes and gives the date it was accessed.
What the later argument will lean on
A short closing ranks the six by planned use, which turns the review from a list of judgments into a sourcing plan that later papers in the course can inherit.
Where marks go in SC200 Unit 4
Reviews that sort sources as good or bad lose the most, because the unit asks what each type can establish, and a regulation is authoritative on legal limits and says little about what a dose does to one person. Next is the review that drops every interested source without saying what it could still document, which reads as a filter rather than an evaluation. Treating the law firm's list of illnesses as medical evidence costs heavily in many sections. Regulatory figures quoted without a date lose accuracy marks, a real risk on a rule reopened about a year after adoption. Tables that repeat the same verdict in every row show the columns were never used. Reference entries that cite a web page with no author, date or access information account for the smaller deductions.
Get a SC200 Unit 4 example written to your instructions
Tell us the issue your SC200 section is tracking for Unit 4 and attach the sources already gathered, even a messy list, plus the rubric. If the instructor supplied a required source mix, include that too. Your free first custom review is ready within 24-48h, each source placed by type and matched to the one claim it can carry.
SC200 Unit 4 questions, answered
Should interested sources be left out of the review entirely?
Usually not. An industry fact sheet or an advocacy page can document what a party claims, which is sometimes exactly what a paper needs. The review earns its credit by naming that narrow use and refusing the broader one. Leaving them out without comment can look like the evaluation was never done, and many rubrics reward the explicit judgment.
Is a government website always the most credible source?
For what that agency is responsible for, such as a legal limit or an official count, it is usually the authority. For other questions it may simply summarize research, and summaries can lag behind newer studies or change with policy. An SC200 review states which question the government page answers and dates the version it cites.
How many sources does a credibility review need?
Whatever the prompt specifies, often five to eight, with a required mix of types in many sections. More rows rarely help. What helps is range: at least one source with original data, one peer-reviewed synthesis, and one interested party, so the review has real distinctions to draw. Your sample follows the count and mix your instructions set.