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C&EE 155 · Lec 1

Unit Operations and Processes for Water and Wastewater Treatment

Fall 2026Hoek, E.M.4 units

Seats, time, final and grades

Seats

Open, 14 seats left.

16 of 30 enrolled, lecture and all discussions summed.

Meets

TR 2:00pm-3:50pm

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

Final

Mon 7 Dec, 8:00am to 11:00am

One exam for the whole class, Los Angeles time.

Read 3 days ago.

Grades

3.46
predicted, this instructor · 20 grades

20 letter grades, Hoek, E.M..

Read 3 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

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Before you can enroll

Registrar's Restrictions cell, read 3 days ago: "Undrgr Engr, Geol, Environ (Maj/Min)".

Tell dibs what you have already taken and this line will say which of these you have. Your list.

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.

1 discussion, all open.

  • Dis 1A

    F 2:00pm-3:50pm

    Dickinson-Cove, A.

    Open, 14 seats left.

When it meets

Mon
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Meets: TR 2:00pm-3:50pm

Discussions: F 2:00pm-3:50pm

Boelter Hall 5252

Grades

3.46
predicted, this instructor · 20 grades

1 other person has taught C&EE 155 in the grade record: JASSBY, DAVID at 3.06 over 108 grades.

A range
75%
P/NP
-
letter grade only
D/F/W
0.0%

Full grade history for C&EE 155

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.

Workload, very heavy. 1.5 of 5 for Eric Hoek, where 5 is lightest. Read 29 days ago.

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

medium 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.

  • 3721F
  • 2622F
  • 2023F
  • 2424F
  • 2125F
Enrollment by term: 21F 37, 22F 26, 23F 20, 24F 24, 25F 21

Peak 37 · most recent 25F at 21

Seats over time

Nothing read since 1 Oct, 3 hours ago. Over about 2 months before that, filled by 1.

16 of 30 · 14 left in its discussions
17 Aug 15:079 Sep 05:241 Oct 19:42 · 3 hours ago
dibs read 168 of the 720 hours its hourly record covers, 23%, and did not look in 552. dibs had no hourly record before 1 Sep, which is the other 365 of 1085 plotted.16 of 30 enrolled at the newest reading, 3 hours ago, with 14 left in its discussions. Seats from 17 Aug 15:07 to 1 Oct 19:42, 15 to 16. dibs read 168 of the 720 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 552 hours dibs was keeping a record and did not reach this section. Nothing before 1 September at 20:00, where this section's record starts, has a read either way, which is 365 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, and that was 3 hours ago. It is where the line stops, not where the count is now.

Show the readings (13)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 19:42 16 30 open - 8 of 27
30 Sep 17:22 16 30 open - 11 of 38
29 Sep 04:12 17 30 open - 3 of 9
28 Sep 20:52 18 30 open - 2 of 5
28 Sep 16:42 17 30 open - 7 of 22
27 Sep 19:22 18 30 open - 19 of 66
25 Sep 02:42 17 30 open - 3 of 8
24 Sep 19:22 16 30 open - 2 of 5
24 Sep 15:52 17 30 open - 35 of 124
19 Sep 12:02 16 30 open - 22 of 77
16 Sep 08:52 15 30 open - 35 of 133
10 Sep 20:40 16 30 open - 32 of 582, 365 no hourly record
17 Aug 15:07 15 30 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.

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