diff --git a/docs/document/content/Environmental Eng-2_CE-441_GB sir_3_8_2023.pdf b/docs/document/content/Environmental Eng-2_CE-441_GB sir_3_8_2023.pdf
new file mode 100644
index 0000000..4b46d82
Binary files /dev/null and b/docs/document/content/Environmental Eng-2_CE-441_GB sir_3_8_2023.pdf differ