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C&EE 156A · Lab 1A

Environmental Chemistry Laboratory

Fall 2026Cha, M.4 units

Seats, time, final and grades

Seats

Closed.

20 of 20 enrolled.

Read 11 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

Its lecture reads closed (20 of 20 enrolled): you attend both, so this seat is not one you can take while that holds. No waitlist listed.

Meets

TR 9:00am-11:50am

This discussion only. You also attend Lec 1.

Final

Exam time unavailable

No exam time is listed in the available section details. Check the registrar or current syllabus; this does not mean there is no final.

Grades

3.90

Predicted GPA

Historical records across all instructors; 144 letter grades

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When you can enroll

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A watch slot

25 per account. A lecture watch also covers its discussions. Paused watches still use a slot.

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Before you can enroll

Registrar's Restrictions cell, read 34 hours ago: "Any School of Engineering Undergraduate, Environmental Science Majors, or Environmental Engineering Minors, and Seniors Only".

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 34 hours ago.

When it meets

This discussion and its linked lecture.

Mon
Tue
Wed
Thu
Fri
8am
9am
10am
11am

Lec 1

8am-8:50am

Lab 1A

9am-11:50am

Lec 1

8am-8:50am

Lab 1A

9am-11:50am

Scroll sideways for the whole week. All meeting times are listed below.

  • Lab 1A

    TR 9:00am-11:50am

  • Lec 1 (required lecture)

    TR 8:00am-8:50am

Boelter Hall 7737

Grades

3.90

Predicted GPA

Historical records across all instructors; 144 letter grades

1 person has taught C&EE 156A in the grade record: LAU, SIM-LIN at 3.93 over 144 grades.

A range
94%
P/NP
0%
D/F/W
0.0%

Full grade history for C&EE 156A

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.

No reviews were listed in the BruinWalk source checked 6 days ago. Assignment details are unknown. Check the current syllabus.

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.

  • 1521F
  • 1522S
  • 1622F
  • 1623S
  • 1423F
  • 1624S
  • 1724F
  • 1725S
  • 1825F
Enrollment by term: 21F 15, 22S 15, 22F 16, 23S 16, 23F 14, 24S 16, 24F 17, 25S 17, 25F 18

Peak 18 · most recent 25F at 18

Seats over time

Nothing read since 16 Oct, 11 hours ago. Over about 2 months before that, same seat count, but the status moved and came back and the seat count moved and came back.

1 time reopened
20 of 20 · no seats left
18 Aug 04:3016 Sep 20:5116 Oct 13:13 · 11 hours ago
Checked 161 of the 1253 hours with hourly history, 13%. No reading was recorded in 1092 hours. dibs had no hourly record before 25 Aug, which is the other 173 of 1426 plotted.20 of 20 enrolled at the newest reading, 11 hours ago, and no seats left. Seats from 18 Aug 04:30 to 16 Oct 13:13, 20 to 20. Checks are not continuous monitoring. Changes between checks may be missed.

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 11 hours ago. It is where the line stops, not where the count is now.

Show the readings (4)
Recorded Enrolled Capacity Status Waitlist Hours read
16 Oct 13:13 20 20 closed - 122 of 913
8 Sep 13:40 20 20 closed - 7 of 65
5 Sep 21:40 19 20 open - 34 of 450, 173 no hourly record
18 Aug 04:30 20 20 closed - -
How readings and alerts work

Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.

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

Nobody on dibs watches this class or has it on a plan yet. Nobody has posted yet.

Lab 1A shares one room with Lec 1 and every other discussion under it, because that is what a student means by "my class".

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