Drug Test/Screening Collector Training & Certification, Compton, CA
For
Collection Sites, Medical Facilities, DER's, HR Managers, Safety Managers, Court Personnel, Probation Officers, TPA's
Accredited Drug Testing provides a comprehensive online/web-based Urine Drug Testing Collector Training and Certification course in Compton, CA for persons required as part of their responsibilities to perform or supervise urine drug testing specimen collections. The collector training program may be completed with or without the required mock collection proficiency assessments. Upon completion of the training program, students will receive a certificate of successful completion of the training course. In Compton, CA to be qualified/certified as a DOT urine drug test collector, you must satisfactorily complete both the training course and a minimum of 5 error free proficiency mock demonstrations.
The Drug Test Collector plays a critical role in the workplace drug screening process. Along with the employer, the testing facility and the Medical Review Officer (MRO), the collector is an essential part of a system developed to ensure drug-free workplaces for the sake of public safety.
As the collector, you are the only individual in the drug-testing process who has direct, face-to-face contact with the employee. You ensure the integrity of the urine specimen and collection process and begin the chain of custody that includes the laboratory; the MRO; the employer; and, possibly, the courts.
This training is a professional-level course that provides the knowledge and skills to qualify Drug Test Collectors to perform U.S. Department of Transportation-regulated drug tests and non-regulated tests. Course participants also have the option of becoming professionally certified after completion of this course. This designation confirms that the collector is committed to the highest standards in the drug and alcohol testing industry.
The Course
This professional-level course meets the regulatory standards of U.S. Department of Transportation (DOT) rule 49 CFR Part 40 and provides a solid foundation for a wide range of testing programs.
- Library of terms & resources
- Universal skills set
- Multiple industries
- Lessons
- DOT Qualification
- Public sector
- Short quizzes & final examination
- Professional Certification
- Private sector
- Mock collections
- Regulated by local, state and federal authorities
- Signature
How to become a DOT Qualified Urine Colletor?
To become qualified as a collector, you must be knowledgeable about Part 40 regulations, the current "DOT Urine Specimen Collection Procedures Guidelines," and DOT agency regulations applicable to the employers for whom you will perform collections, and you must keep current on any changes to these materials. You must also (1) successfully complete a qualification training program and (2) pass a monitored proficiency demonstration, as required by DOT regulations [See 49 CFR Part 40.33 (b-c), effective August 1, 2001]. Please note: there is no "grandfather" clause or waiver from this requirement. A collector's qualifications are not location/collection site specific, and their eligibility will follow them anywhere DOT Agency regulated urine specimens are collected. There is no requirement for qualified collectors to register or to be on any federally-maintained or federally-sponsored list, but they are required to maintain (for Federal inspection) documentation of successful completion of their training and proficiency demonstration requirements.
How to Take the Course
The Drug Test Collector Training involves multiple parts that need to be completed in a specific order to achieve certification.
- Before starting the training, the collector must:
- review 49 CFR Part 40 and be familiar with the regulatory language;
- review the DOT Urine Specimen Collection Guidelines;
- review "Instructions for Completing the Federal Drug Testing Custody and Control Form for Urine Specimen Collection"
- watch DOT's 10 Steps to Collection Site Security and Integrity video.
- and download the sample Custody and Control Form. This form guides the entire drug-collection process. Review the document and have it at hand through the entire course. (All required materials are also available in the Reference Library.) NOTE: The 2017 version of the CCF is no longer current. If you intend to use it, you must attach a Memorandum for Record (MFR).
- Take the course Pre-Test to show familiarity with the subject matter based on a review of the materials provided.
- Complete the lessons of the training along with the required short quizzes.
- Take the final exam. A score of at least 90 percent is required.
- When you pass the online portion of this training, continue to the Next Steps lesson for instructions on how to set up five mock collections with a live examiner. These must be scheduled within 30 days of course completion and are required for qualification and certification.
- Once the mock collections are completed without error, you will be qualified and can perform both federally regulated and non-regulated drug test collections.
- To be certified, qualified collectors are asked to sign an agreement promising to adhere to the standards set in the training. The course administrator will then issue a certification form documenting that the collector is both a USDOT Qualified and Professionally Certified Drug Testing Collector. Contact the course administrator for more information.
Additional Courses Available
- DOT Alcohol Screening Test Technician Training
- Saliva/Oral Fluid Training & Certification
- Certified Drug Test Collector Annual Exam
- DOT Breath Alcohol Technician Training
- Hair Specimen Collector Training & Certification
- DOT Reasonable Suspicion Training Course
- DER Training FMCSA
- DER Training FAA
- DER Training PHMSA
- DER Training FRA
- DER Training FTA
- DER Training USCG
- MRO Assistant Training
- New Business Start Up Overview
** Accredited Drug Testing's Urine Specimen Collector training course is developed in conjunction with the National Drug and Alcohol Screening Association.
Drug and Alcohol Testing Locations Compton, CA
2499 S WILMINGTON AVE 1.3 miles
COMPTON, CA 90220
19301 S SANTA FE AVE Ste 120 2.6 miles
COMPTON, CA 90221
7300 ALONDRA BLVD STE 108 2.8 miles
PARAMOUNT, CA 90723
3611 MLK Blvd STE 108 2.9 miles
LYNWOOD, CA 90262
15401 S MAIN ST 3.2 miles
GARDENA, CA 90248
16630 S BROADWAY ST 3.5 miles
GARDENA, CA 90248
16444 PARAMOUNT BLVD 3.5 miles
PARAMOUNT, CA 90723
16660 PARAMONT BLVD STE 102 3.6 miles
PARAMOUNT, CA 90723
11152 S MAIN ST 4.0 miles
LOS ANGELES, CA 90061
20401 AVALON BLVD STE C 4.2 miles
CARSON, CA 90746
455 E CARSON PLAZA DR 4.4 miles
CARSON, CA 90746
1300 W 155TH ST STE 109 4.5 miles
GARDENA, CA 90247
1149 W 190TH ST 4.8 miles
GARDENA, CA 90248
9353 IMPERIAL HWY GARDEN MEDICAL OFFICE,3RD FLOOR 4.9 miles
DOWNEY, CA 90242
5205 Lakewood Blvd 5.4 miles
Lakewood, CA 90712
5203 LAKEWOOD BLVD 5.4 miles
LAKEWOOD, CA 90712
5220 CLARK AVE STE 445 5.7 miles
LAKEWOOD, CA 90712
11411 BROOKSHIRE AVE STE 408 5.8 miles
DOWNEY, CA 90241
6529 SEVILLE AVE 5.8 miles
HUNTINGTON PARK, CA 90255
2776 PACIFIC AVE 6.3 miles
LONG BEACH, CA 90806
2301 W EL SEGUNDO BLVD 6.3 miles
HAWTHORNE, CA 90250
23601 AVALON BLVD Ste 104 6.4 miles
CARSON, CA 90745
482 W WILLOW ST 6.5 miles
LONG BEACH, CA 90806
2750 ATLANTIC AVE 6.5 miles
LONG BEACH, CA 90806
3364 E SLAUSON AVE 6.8 miles
VERNON, CA 90058
5862 AVALON BLVD 6.9 miles
LOS ANGELES, CA 90003
21081 S WESTERN AVE STE 150 6.9 miles
TORRANCE, CA 90501
2101 MAGNOLIA AVE 7.0 miles
LONG BEACH, CA 90806
14619 PRAIRIE AVE 7.1 miles
LAWNDALE, CA 90260
4580 PACIFIC BLVD 7.3 miles
VERNON, CA 90058
3430 GARFIELD AVE 7.6 miles
LOS ANGELES, CA 90040
4253 REDONDO BEACH BLVD 7.7 miles
LAWNDALE, CA 90260
8337 TELEGRAPH RD STE 104 7.7 miles
PICO RIVERA, CA 90660
2476 S ATLANTIC BLVD 7.9 miles
COMMERCE, CA 90040
11633 HAWTHORNE BLVD #215 8.0 miles
HAWTHORNE, CA 90250
3851 S SOTO ST 8.0 miles
VERNON, CA 90058
3688 S Soto St 8.0 miles
Vernon, CA 90058
1250 PACIFIC AVE 8.0 miles
LONG BEACH, CA 90813
6538 TELEGRAPH RD 8.1 miles
LOS ANGELES, CA 90040
1050 LINDEN AVE Ste 887 8.2 miles
LONG BEACH, CA 90813
1720 TERMINO AVE 8.5 miles
LONG BEACH, CA 90804
1703 TERMINO AVE, STE 102 8.6 miles
LONG BEACH, CA 90804
1907 E WASHINGTON BLVD 8.7 miles
LOS ANGELES, CA 90021
21320 HAWTHORNE BLVD STE 227 8.7 miles
TORRANCE, CA 90503
11817 TELEGRAPH RD 8.7 miles
SANTA FE SPRINGS, CA 90670
25965 NORMANDIE AVE FL 1 8.8 miles
HARBOR CITY, CA 90710
4101 TORRANCE BLVD 8.9 miles
TORRANCE, CA 90503
3320 S HILL ST 9.1 miles
LOS ANGELES, CA 90007
3330 LOMITA BLVD 9.1 miles
TORRANCE, CA 90505
23441 Madison St Ste 300, 9.4 miles
Torrance, CA 90505
13440 IMPERIAL HWY 9.6 miles
SANTA FE SPRINGS, CA 90670
23441 MADISON ST.BLD8,STE 110 9.6 miles
TORRANCE, CA 90505
520 N Prospect Ave Ste 305, 9.6 miles
Redondo Beach, CA 90277
920 N NASH ST 9.9 miles
EL SEGUNDO, CA 90245
1400 S GRAND AVE STE 612 10.1 miles
LOS ANGELES, CA 90015
2300 W BEVERLY BLVD 10.2 miles
MONTEBELLO, CA 90640
390 N SEPULVEDA BLVD STE 1000 10.3 miles
EL SEGUNDO, CA 90245
100 Oceangate, P245 10.4 miles
LONG BEACH, CA 90802
On-site only 10.4 miles
Long Beach, CA 90802
6033 W CENTURY BLVD STE 200 10.4 miles
LOS ANGELES, CA 90045
1700 E WALNUT AVE 10.5 miles
EL SEGUNDO, CA 90245
420 E 3rd St Ste 802, 10.5 miles
Los Angeles, CA 90013
124 N VIGNES ST 10.6 miles
LOS ANGELES, CA 90012
9601 S SEPULVEDA BLVD 10.7 miles
LOS ANGELES, CA 90045
10861 CHERRY ST STE 202 10.7 miles
LOS ALAMITOS, CA 90720
2231 S WESTERN AVE 10.7 miles
LOS ANGELES, CA 90018
309 W BEVERLY BLVD 10.8 miles
MONTEBELLO, CA 90640
929 GEORGIA ST 10.8 miles
LOS ANGELES, CA 90015
8930 S SEPULVEDA BLVD STE 200 10.9 miles
LOS ANGELES, CA 90045
5451 LA PALMA AVE STE 24 10.9 miles
LA PALMA, CA 90623
12385 WASHINGTON BLVD 10.9 miles
WHITTIER, CA 90606
8800 S SEPULVEDA BLVD STE 8 10.9 miles
LOS ANGELES, CA 90045
15330 VALLEY VIEW AVE STE 1 11.0 miles
LA MIRADA, CA 90638
8726 S SEPULVEDA BLVD 11.0 miles
LOS ANGELES, CA 90045
333 S HOPE ST STE C145 11.0 miles
LOS ANGELES, CA 90071
16700 VALLEY VIEW AVE STE 180 11.0 miles
LA MIRADA, CA 90638
16702 VALLEY VIEW AVE 11.0 miles
LA MIRADA, CA 90638
40 CENTERPOINTE DR 11.0 miles
LA PALMA, CA 90623
12401 WASHINGTON BLVD 11.0 miles
WHITTIER, CA 90602
1313 W 8TH ST ste 100 11.1 miles
LOS ANGELES, CA 90017
5525 W SLAUSON AVE 11.1 miles
LOS ANGELES, CA 90056
1127 Wilshire Blvd Ste 203&204, 11.1 miles
Los Angeles, CA 90017
1225 WILSHIRE BLVD 11.2 miles
LOS ANGELES, CA 90017
12462 PUTNAM ST ste 402 11.2 miles
WHITTIER, CA 90602
132 S BEAUDRY AVE 11.4 miles
LOS ANGELES, CA 90012
823 N BROADWAY 11.6 miles
LOS ANGELES, CA 90012
1294 W 6th St Ste 206, 11.9 miles
San Pedro, CA 90731
1360 W 6TH ST STE 190 11.9 miles
SAN PEDRO, CA 90732
2131 W 3RD ST Ste 4 11.9 miles
LOS ANGELES, CA 90057
1300 W 7TH ST 12.0 miles
SAN PEDRO, CA 90732
169 S ALVARADO ST STE 101 12.0 miles
LOS ANGELES, CA 90057
3545 WILSHIRE BLVD STE 325 12.4 miles
LOS ANGELES, CA 90010
15141 Whittier Blvd Ste 125, 12.9 miles
Whittier, CA 90603
5971 VENICE BLVD FL 4 13.2 miles
LOS ANGELES, CA 90034
12001 W WASHINGTON BLVD 13.5 miles
LOS ANGELES, CA 90066
5455 WILSHIRE BLVD STE 1802 13.6 miles
LOS ANGELES, CA 90036
12212 W WASHINGTON BLVD 13.7 miles
LOS ANGELES, CA 90066
100 S RAYMOND AVE 14.1 miles
ALHAMBRA, CA 91801
2814 W LINCOLN AVE 14.2 miles
ANAHEIM, CA 92801
110 N LA BREA AVE 14.2 miles
INGLEWOOD, CA 90301
8512 Whitworth Dr 14.3 miles
LOS ANGELES, CA 90035
1300 N VERMONT AVE 14.4 miles
LOS ANGELES, CA 90027
12801 CROSSROADS PKWY S Ste 150 14.4 miles
CITY OF INDUSTRY, CA 91746
333 S MAGNOLIA AVE 14.8 miles
ANAHEIM, CA 92804
8501 Wilshire Blvd Suite 305, 14.8 miles
Beverly Hills, CA 90211
1253 VINE ST ste 19A 15.0 miles
LOS ANGELES, CA 90038
7052 ORANGEWOOD AVE STE 6 15.0 miles
GARDEN GROVE, CA 92841
9350 FLAIR DR Ste 102 15.1 miles
EL MONTE, CA 91731
940 E MAIN ST 15.2 miles
ALHAMBRA, CA 91801
12600 BEACH BLVD 15.3 miles
STANTON, CA 90680
1300 N LA BREA AVE 15.4 miles
HOLLYWOOD, CA 90028
3144 SANTA ANITA AVE STE 205 15.5 miles
EL MONTE, CA 91733
8700 BEVERLY BLVD 15.5 miles
WEST HOLLYWOOD, CA 90048
416 W LAS TUNAS DR, STE 204 15.7 miles
SAN GABRIEL, CA 91776
330 W. LAS TUNAS DR. STE 2 15.7 miles
SAN GABRIEL, CA 91776
710 N EUCLID ST STE 203 15.8 miles
ANAHEIM, CA 92801
11560 W PICO BLVD 15.9 miles
LOS ANGELES, CA 90064
1801 W ROMNEYA DR STE 106 16.0 miles
ANAHEIM, CA 92801
222 W EULALIA ST STE 101 16.1 miles
GLENDALE, CA 91204
15464 GOLDENWEST ST 16.2 miles
WESTMINSTER, CA 92683
7955 WESTMINSTER BLVD 16.2 miles
WESTMINSTER, CA 92683
1526 N EDGEMONT ST FL 1 16.6 miles
LOS ANGELES, CA 90027
1950 SUNNYCREST DR STE 1800 16.6 miles
FULLERTON, CA 92835
801 S Chevy Chase Dr Ste 50, 16.7 miles
Glendale, CA 91205
801 S CHEVY CHASE DR 16.7 miles
GLENDALE, CA 91205
2720 N HARBOR BLVD STE 130 16.7 miles
FULLERTON, CA 92835
50 ALESSANDRO PL. SUITE A10 16.7 miles
PASADENA, CA 91105
2151 N HARBOR BLVD 16.7 miles
FULLERTON, CA 92835
16025 GALE AVE STE B10 16.9 miles
CITY OF INDUSTRY, CA 91745
1006 W LA PALMA AVE 16.9 miles
ANAHEIM, CA 92801
100 W CALIFORNIA BLVD 17.0 miles
PASADENA, CA 91105
4500 RIVERVIEW AVE 17.1 miles
EL MONTE, CA 91731
11645 WILSHIRE BLVD STE 830 17.4 miles
LOS ANGELES, CA 90025
757 WESTWOOD PLZ 17.4 miles
LOS ANGELES, CA 90095
2121 SANTA MONICA BLVD 17.5 miles
SANTA MONICA, CA 90404
432 W BROADWAY 17.5 miles
GLENDALE, CA 91204
1908 SANTA MONICA BLVD STE 5 17.5 miles
SANTA MONICA, CA 90404
230 N MARYLAND AVE STE 110 17.6 miles
GLENDALE, CA 91206
11611 SAN VICENTE BLVD 17.7 miles
LOS ANGELES, CA 90049
1250 16TH ST 17.8 miles
SANTA MONICA, CA 90404
544 N GLENDALE AVE 17.9 miles
GLENDALE, CA 91206
960 E GREEN ST, STE 164 17.9 miles
PASADENA, CA 91106
209-1 Takashiho Yomitan Village 18.2 miles
SANTA MONICA, CA 90403
17122 BEACH BLVD STE 104 18.2 miles
Huntington Beach, CA 92647
221 E GLENOAKS BLVD STE 130 18.3 miles
GLENDALE, CA 91207
1111 E LA PALMA AVE 18.3 miles
ANAHEIM, CA 92805
1750 E COLORADO BLVD 18.3 miles
PASADENA, CA 91106
117 E LIVE OAK AVE STE 101 18.4 miles
ARCADIA, CA 91006
947 S ANAHEIM BLVD STE 120 18.5 miles
ANAHEIM, CA 92805
14148 FRANCISQUITO AVE 18.6 miles
BALDWIN PARK, CA 91706
1000 S ANAHEIM BLVD STE 200 18.6 miles
ANAHEIM, CA 92805
17487 HURLEY ST 18.8 miles
CITY OF INDUSTRY, CA 91744
17822 BEACH BL SUITE 242 18.8 miles
HUNTINGTON BEACH, CA 92647
1001 E IMPERIAL HWY 18.9 miles
BREA, CA 92821
501 S BUENA VISTA ST 18.9 miles
BURBANK, CA 91505
17024 MAGNOLIA ST 18.9 miles
FOUNTAIN VALLEY, CA 92708
8970 WARNER AVE 19.0 miles
FOUNTAIN VALLEY, CA 92708
1717 E LINCOLN AVE 19.1 miles
Anaheim, CA 92805
566 E LAMBERT RD 19.1 miles
BREA, CA 92821
2701 W ALAMEDA AVE STE 203 19.2 miles
BURBANK, CA 91505
18561 BEACH BLVD 19.3 miles
HUNTINGTON BEACH, CA 92648
18800 Main St Ste 111, 19.3 miles
Huntington Beach, CA 92648
211 S STATE COLLEGE BLVD STE 325 19.3 miles
ANAHEIM, CA 92806
18575 Gale Ave Ste 155 19.5 miles
City of Industry, CA 91748
18575 GALE AVE STE 295 19.5 miles
CITY OF INDUSTRY, CA 91748
56 E DUARTE RD 19.5 miles
ARCADIA, CA 91006
18811 FLORIDA ST 19.5 miles
HUNTINGTON BEACH, CA 92648
640 S PLACENTIA AVE 19.5 miles
PLACENTIA, CA 92870
18335 VALLEY BLVD 19.7 miles
LA PUENTE, CA 91744
725 S ORANGE AVE 19.9 miles
WEST COVINA, CA 91790
9900 Talbert Ave Ste 203, 20.3 miles
Fountain Valley, CA 92708
9920 TALBERT AVE 20.3 miles
FOUNTAIN VALLEY, CA 92708
2707 E VALLEY BLVD STE 116 20.4 miles
WEST COVINA, CA 91792
3413 W PACIFIC AVE 102 20.5 miles
BURBANK, CA 91505
2121 S TOWNE CENTRE PL STE 100 20.6 miles
ANAHEIM, CA 92806
11180 E Warner Ave Ste 159, 20.6 miles
Fountain Valley, CA 92708
1300 N KRAEMER BLVD 20.7 miles
ANAHEIM, CA 92806
9122 ADAMS AVE 21.1 miles
HUNTINGTON BEACH, CA 92646
4312 Woodman Ave Ste 102 21.2 miles
Sherman Oaks, CA 91423
909 E YORBA LINDA BLVD STE H 21.3 miles
PLACENTIA, CA 92870
3413 W PACIFIC AVE 21.5 miles
BURBANK, CA 91505
1201 N. ROSE DR. SUITE 202 21.6 miles
PLACENTIA, CA 92870
15705 ARROW HWY STE 6B 21.6 miles
IRWINDALE, CA 91706
1301 N ROSE DR 21.7 miles
PLACENTIA, CA 92870
3100 W WARNER AVE 21.7 miles
SANTA ANA, CA 92704
3401 S HARBOR BLVD 21.8 miles
SANTA ANA, CA 92704
1310 W Stewart Dr Ste 304, 21.8 miles
Orange, CA 92868
1010 W La Veta Ave Ste 140, 22.0 miles
Orange, CA 92868
946 W TOWN AND COUNTRY RD 22.0 miles
ORANGE, CA 92868
5345 IRWINDALE AVE 22.1 miles
IRWINDALE, CA 91706
705 W LA VETA AVE STE 102 22.1 miles
ORANGE, CA 92868
11631 VICTORY BLVD STE 101 22.2 miles
NORTH HOLLYWOOD, CA 91606
2640 E GARVEY AVE S STE 106 22.5 miles
WEST COVINA, CA 91791
11432 VANOWEN ST 22.6 miles
N HOLLYWOOD, CA 91605
6000 N IRWINDALE AVE STE A 22.7 miles
IRWINDALE, CA 91702
6405 WILKINSON AVE 22.7 miles
NORTH HOLLYWOOD, CA 91606
1045 N TUSTIN ST 23.0 miles
ORANGE, CA 92867
6520 N IRWINDALE AVE STE 100 23.2 miles
IRWINDALE, CA 91702
411 N LAKEVIEW AVE 23.2 miles
ANAHEIM, CA 92807
867 S TUSTIN ST 23.6 miles
ORANGE, CA 92866
554 E San Bernardino Rd Ste 10, 23.7 miles
Covina, CA 91723
6410 VAN NUYS BLVD STE B 24.0 miles
VAN NUYS, CA 91401
1530 E Edinger Ave Ste 1 24.3 miles
Santa Ana, CA 92705
800 N Tustin Ave Ste A 24.3 miles
Santa Ana, CA 92705
801 N Tustin Ave Ste 102, 24.3 miles
Santa Ana, CA 92705
301 VICTORIA ST 24.4 miles
COSTA MESA, CA 92627
100 N TUSTIN AVE 24.4 miles
TUSTIN, CA 92780
17542 17TH ST STE 330 24.5 miles
TUSTIN, CA 92780
1619 E Edinger Ave 24.6 miles
Santa Ana, CA 92705
1000 BRISTOL ST N Ste 1B 24.6 miles
NEWPORT BEACH, CA 92660
1241 E DYER RD STE 145 24.6 miles
SANTA ANA, CA 92705
1534 E WARNER AVE 24.7 miles
SANTA ANA, CA 92705
1419 SUPERIOR AVE STE 1 24.8 miles
NEWPORT BEACH, CA 92663
320 SUPERIOR AVE. STE 150 24.9 miles
NEWPORT BEACH, CA 92663
15211 VANOWEN ST STE 105 24.9 miles
VAN NUYS, CA 91405
15211 VANOWEN ST STE 319 24.9 miles
VAN NUYS, CA 91405
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Local Area Info: Compton, California
Compton is a city in southern Los Angeles County, California, United States, situated south of downtown Los Angeles. Compton is one of the oldest cities in the county and on May 11, 1888, was the eighth city to incorporate. As of the 2010 United States Census, the city had a total population of 96,456. It is known as the "Hub City" due to its geographic centrality in Los Angeles County. Neighborhoods in Compton include Sunny Cove, Leland, Downtown Compton, and Richland Farms. The city is generally a working class city with some middle-class neighborhoods, and is home to a relatively young population, at an average 25 years of age, compared to the American median age of 38 (2018 data).
In 1784, the Spanish Crown deeded a tract of over 75,000 acres (300 km2) to Juan Jose Dominguez in this area. The tract was named Rancho San Pedro. Dominguez's name was later applied to the Dominguez Hills area south of Compton. The tree that marked the original northern boundary of the rancho still stands at the corner of Poppy and Short streets.[citation needed] The rancho was subdivided and parcels were sold within the Californios of Alta California until the lands were ceded after the Mexican-American war in 1848. American immigrants acquired most of the rancho lands after 1848.[clarification needed]
In 1867, Griffith Dickenson Compton led a group of 30 pioneers to the area. These families had traveled by wagon train south from Stockton, California, in search of ways to earn a living other than the rapid exhaustion of gold fields. Originally named Gibsonville, after one of the tract owners, it was later called Comptonville. However, to avoid confusion with the Comptonville located in Yuba County, the name was shortened to Compton. Compton's earliest settlers were faced with terrible hardships as they farmed the land in bleak weather to get by with just the barest subsistence. The weather continued to be harsh, rainy and cold, and fuel was difficult to find. To gather firewood it was necessary to travel to mountains close to Pasadena. The round trip took almost a week. Many in the Compton party wanted to relocate to a friendlier climate and settle down, but as there were two general stores within traveling distance—one in the pueblo of Los Angeles, the other in Wilmington—they eventually decided to stay put.