# Geology (GEOL) — Fall 2026 schedule

Mt. San Antonio College · 27 sections · Seat counts as of 2026-10-15

Source: https://prodrg.mtsac.edu/StudentRegistrationSsb/ssb/term/termSelection?mode=search

Course descriptions: 2026-2027 catalog, /c/mt-san-antonio-college/catalog/2026-2027/courses/geol.md

## GEOL 1 — Physical Geology (4 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21433 | 01 | In person, Lecture-Lab/Studio/Activity | Class: Mon/Wed 9:45–11:10am, Bldg 60 1512; Lab: Mon/Wed 11:30am–12:55pm, Bldg 60 1512 | Aug 24–Dec 13 | David D Mrofka | 1 of 24 open, 1 waitlisted |
| 21434 | 02 | In person, Lecture-Lab/Studio/Activity | Class: Tue/Thu 6:30–7:55pm, Bldg 60 1512; Lab: Tue/Thu 8:15–9:40pm, Bldg 60 1512 | Aug 24–Dec 13 | Robert J Leeper | 7 of 24 open |
| 21435 | 03 | In person, Lecture-Lab/Studio/Activity | Class: Tue/Thu 9:45–11:10am, Bldg 60 1512; Lab: Tue/Thu 11:30am–12:55pm, Bldg 60 1512 | Aug 24–Dec 13 | Dylan H Terry | 1 of 24 open |
| 21436 | 04 | In person, Lecture-Lab/Studio/Activity | Class: Tue/Thu 1:15–2:40pm, Bldg 60 1512; Lab: Tue/Thu 3:00–4:25pm, Bldg 60 1512 | Aug 24–Dec 13 | Hilary C Lackey | Full (24/24) |

## GEOL 10 — Natural Disasters (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21437 | 01 | In person | Tue/Thu 9:45–11:10am, 11 - Science North 2324 | Aug 24–Dec 13 | Craig A Webb | 1 of 36 open |
| 21438 | 02 | In person | Tue/Thu 11:30am–12:55pm, 11 - Science North 2324 | Aug 24–Dec 13 | Craig A Webb | Full (38/36) |
| 21440 | 04 | Online anytime | Online, no set time | Aug 24–Dec 13 | Alex A Patthoff | 6 of 36 open, 4 waitlisted |
| 24067 | 05 | In person | Wed 6:30–9:40pm, 11 - Science North 2324 | Aug 24–Dec 13 | Clint T Schmidt | 11 of 36 open |

## GEOL 25 — Geologic Field Studies: Southern California (4 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21441 | 01 | Hybrid, Lecture-Lab/Studio/Activity | Mon 1:15–4:25pm, Bldg 60 1512; Wed 1:15–4:25pm, Bldg 60 1512; Plus online work | Sep 14–Dec 6 | David D Mrofka, Becca A Walker | 4 of 18 open |

## GEOL 30 — Global Climate Change (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 24048 | 02 | Online anytime | Online, no set time | Aug 24–Dec 13 | David D Mrofka | 6 of 24 open, 4 waitlisted |

## GEOL 31 — Geotechnical Methods for Geotechnical (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21444 | 01 | In person, Laboratory/Studio/Activity | Wed 8:00–11:10am, Bldg 60 1515 | Aug 24–Dec 13 | Robert J Leeper | 9 of 18 open |

## GEOL 32 — Work Experience in Geotechnician/Environmental Technician Skills (1-4 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 25234 | 01 | Online anytime, Work experience | Online, no set time | Oct 19–Dec 13 | Robert J Leeper | 6 of 10 open |

## GEOL 8 — Earth Science (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21445 | 01 | In person | Fri 9:00am–12:10pm, Bldg 60 1515 | Aug 24–Dec 13 | Daniel Ohare | Full (37/36) |
| 21446 | 02 | Online + live | Sat 9:00am–12:10pm, Online Class; Plus online work | Aug 24–Oct 18 | Barbara J Grubb | 12 of 36 open |
| 21447 | 03 | In person | Tue/Thu 1:15–2:40pm, Bldg 60 1511 | Aug 24–Dec 13 | Yoshie Hagiwara | Full (36/36) |
| 21449 | 05 | Online anytime | Online, no set time | Aug 24–Dec 13 | David D Mrofka | Full (38/36) |
| 21450 | 06 | Online anytime | Online, no set time | Aug 24–Dec 13 | Alex A Patthoff | 5 of 36 open, 3 waitlisted |
| 24365 | 07 | In person | Tue/Thu 2:00–3:30pm, Off Campus MECA | Aug 24–Dec 13 | Shelley M Regalado | 22 of 36 open |
| 24408 | 08 | In person | Mon/Wed 3:30–5:05pm, Off Campus IPOLY | Aug 24–Dec 13 | Douglas S Neves | 18 of 36 open |
| 24817 | 09 | Online anytime | Online, no set time | Aug 24–Dec 13 | David D Mrofka | 6 of 36 open, 1 waitlisted |
| 25082 | 10 | Online anytime | Online, no set time | Sep 14–Dec 6 | Alex A Patthoff | 4 of 36 open, 8 waitlisted |

## GEOL 8L — Earth Science Laboratory (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21451 | 01 | In person, Laboratory/Studio/Activity | Fri 1:15–4:25pm, Bldg 60 1515 | Aug 24–Dec 13 | Daniel Ohare | 4 of 24 open |
| 21452 | 02 | In person, Laboratory/Studio/Activity | Tue 3:00–6:10pm, Bldg 60 1515 | Aug 24–Dec 13 | Clint T Schmidt | 4 of 24 open |
| 21453 | 03 | In person, Laboratory/Studio/Activity | Thu 6:30–9:40pm, Bldg 60 1515 | Aug 24–Dec 13 | Daniel Ohare | 4 of 24 open |

## GEOL 9 — Environmental Geology (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 21454 | 01 | In person | Tue 11:30am–2:40pm, Bldg 60 1515 | Aug 24–Dec 13 | Robert J Leeper | 13 of 24 open |
| 21455 | 02 | Online anytime | Online, no set time | Aug 24–Dec 13 | Shelley M Regalado | 5 of 24 open, 1 waitlisted |

## GEOL 9L — Environmental Geology Laboratory (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 22999 | 01 | In person, Laboratory/Studio/Activity | Thu 11:30am–2:40pm, Bldg 60 1515 | Aug 24–Dec 13 | Robert J Leeper | 14 of 24 open |