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C&EE 153 · Lec 1

Introduction to Environmental Engineering Science

Fall 2026Mohanty, S.4 units

Seats, time, final and grades

Seats

Open, 1 seat left.

131 of 133 enrolled, lecture and all discussions summed.

Subtract those two and the lecture has 2 places in it. The 1 seat above is what is open in the discussions, and you enroll in a discussion, so that is the figure that decides whether you get in.

Meets

MW 12:00pm-1:50pm

Lecture only. You also attend a discussion, listed below.

Final

None on the page dibs read

No exam time on the page dibs read. That is not the registrar saying there is no final.

Grades

3.72
predicted, all instructors · 763 grades

763 letter grades, everyone who has taught C&EE 153.

Read 84 minutes ago. This is a recent reading, not a live seat count.

dibs has seen this section open 5 times since 17 August. The last time was 29 September.

Enroll on the registrar (opens in a new tab) Sign in to watch for an opening

Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.

Put this class on a board

A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.

Before you can enroll

Registrar's Restrictions cell, read 3 days ago: "Any School of Engineering Undergraduate, Environmental Science Majors, or Environmental Engineering Minors".

From the registrar

Students who enroll in upper-division courses offered by the Samueli School without completing the requisites are subject to disenrollment after the second class meeting. If necessary, consult with an OASA counselor through MyUCLA Message Center.

Restrictions read 3 days ago. dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.

Discussions

You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.

2 discussions, 1 open: Dis 1A, F 4:00pm-5:50pm.

  • Dis 1A

    F 4:00pm-5:50pm

    Sepulveda, N.

    Open, 1 seat left.

  • Dis 1B

    T 8:00am-9:50am

    Sepulveda, N.

    Closed.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MW 12:00pm-1:50pm

Discussions: F 4:00pm-5:50pm

Boelter Hall 3400

Grades

3.72
predicted, all instructors · 763 grades

2 people have taught C&EE 153 in the grade record: MOHANTY, SANJAY at 3.73 over 615 grades and MOHANTY, SANJAY K at 3.68 over 148 grades.

A range
78%
P/NP
-
letter grade only
D/F/W
0.3%

Full grade history for C&EE 153

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.

Will it still be here

high risk chance of closing before your enrollment pass.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 14821F
  • 16722F
  • 14623F
  • 15924F
  • 14325F
Enrollment by term: 21F 148, 22F 167, 23F 146, 24F 159, 25F 143

Peak 167 · most recent 25F at 143

Seats over time

Filled by 12 over about 2 months

5 times reopened
131 of 133 · 1 left in its discussions
17 Aug 15:079 Sep 07:091 Oct 23:12
dibs read 168 of the 723 hours its hourly record covers, 23%, and did not look in 555. dibs had no hourly record before 1 Sep, which is the other 366 of 1089 plotted.131 of 133 enrolled at the newest reading, 84 minutes ago, with 1 left in its discussions. Seats from 17 Aug 15:07 to 1 Oct 23:12, 119 to 131. dibs read 168 of the 723 hours its hourly record here covers, 23%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 555 hours dibs was keeping a record and did not reach this section. Nothing before 1 September at 21:00, where this section's record starts, has a read either way, which is 366 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 84 minutes ago.

Show the readings (23)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 23:12 131 133 open - 2 of 5
1 Oct 19:42 131 133 open - 3 of 8
1 Oct 12:02 132 133 open - 4 of 13
1 Oct 00:22 131 133 open - 3 of 8
30 Sep 17:22 132 133 open - 5 of 16
30 Sep 02:02 131 133 open - 2 of 6
29 Sep 21:42 132 133 open - 125 of 458
10 Sep 20:40 133 133 closed - 25 of 189
3 Sep 00:40 129 129 closed - 5 of 23
2 Sep 02:40 125 126 open - 3 of 6
1 Sep 21:40 127 127 closed - 1 of 2, 1 no hourly record
1 Sep 20:40 125 126 open - no hourly record
1 Sep 19:40 127 127 closed - no hourly record
1 Sep 15:40 126 126 closed - no hourly record
28 Aug 01:40 127 127 closed - no hourly record
27 Aug 22:40 124 126 open - no hourly record
27 Aug 21:40 127 127 closed - no hourly record
27 Aug 20:40 124 126 open - no hourly record
27 Aug 19:40 127 127 closed - no hourly record
21 Aug 17:40 124 126 open - no hourly record
21 Aug 10:40 120 126 open - no hourly record
18 Aug 04:30 120 122 open - no hourly record
17 Aug 15:07 119 122 open - -
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.

Class chat

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