Our local DOT drug and alcohol testing centers are located in Downey CA and the surrounding areas providing DOT drug testing, DOT alcohol testing and DOT physicals for all DOT modes regulated by Part 40. Same day service is available at our Downey CA DOT drug testing facilities and most of our DOT drug testing locations are within minutes of your home or office.
What type of DOT Testing is required?
Coastal Drug Testing provides DOT pre-employment, random, post-accident, reasonable suspicion and return to duty testing at our Downey CA DOT drug testing centers.
If you hold a CDL license, a large, medium or a small trucking company, Coastal Drug Testing has a complete DOT compliance package which includes all the requirements to comply with CFR 49 part 40.
All Coastal Drug Testing DOT drug testing centers utilize SAMHSA Certified laboratories and a licensed Medical Review Officer as required by DOT part 40 regulations.
The U.S Department of Transportation (DOT) requires that all DOT regulated "safety sensitive" employees have a negative DOT pre-employment drug test result on file and be actively enrolled in a DOT approved random drug and alcohol random testing pool (consortium).
In addition, if a DOT regulated company has more than one "safety sensitive" employee, the employer must also have a written DOT drug and alcohol policy along with an on-site supervisor that must have completed a reasonable suspicion supervisor training program.
On the road and need a DOT Drug or Alcohol test? No Worries!
To be compliant with DOT regulations, a company's DOT drug and alcohol testing program must have the following components:
- Employee Drug Testing
- Written Drug and Alcohol Policy
- Supervisor Training
- Substance Abuse Referral
- Employee Education
- Random Selection Program
- Post Accident Testing
- Designated Employer Representative
- Federal Chain of Custody Forms
- Part 40 Regulations on File
The Department of Transportation (DOT) has specific drug and alcohol testing requirements for the all transportation modes all DOT agencies.
Our modes included are:
- Federal Motor Carrier Safety Administration (FMCSA)
- Federal Aviation Administration (FAA)
- Federal Transit Administration (FTA)
- United States Coast Guard (USCG)
- Pipeline and Hazardous Materials Safety Administration (PHMSA)
- Federal Railroad Administration (FRA)
Are You Enrolled in a DOT Consortium?
Individuals who are employed in a position designated as "safety sensitive" must be actively enrolled in a random drug and alcohol testing program. Oftentimes, covered employees will join a group of other DOT regulated employees in a random testing program and this is referred to as a DOT Consortium. Generally, an employer who has less than fifty employees or single operators will join the consortium which will comply with the random drug and alcohol testing requirements of 49 CFR Part 40. Employers that have over 50 employees who are regulated by Part 40 may elect to be enrolled in a "stand alone" random testing pool.
The DOT consortium is cost effective and complies with all requirements of 49 CFR Part 40 which mandates that all "safety sensitive" employees be enrolled in a random drug and alcohol testing program.
The Department of Transportation (DOT) has strict regulations requiring regulated companies and independent operators (CDL License Holders) to be an active member of a DOT drug and alcohol Consortium and failure to comply with these regulations can result in significant fines and other DOT sanctions.
We are fully versed in the DOT procedures for pre-employment drug testing, random drug testing, reasonable suspicion drug testing, post-accident drug testing, return to duty drug testing and follow up drug testing.
DOT regulated companies with multiple safety sensitive employees must also have an employee within the company who is assigned as the "designated employer representative" (DER). This is the person responsible for removing any DOT "safety sensitive" employee who is covered by 49 CFR Part 40 from performing a DOT safety sensitive position when a positive drug or alcohol test result has occurred or an employee has refused to take a required DOT test.
If you have recently become a DOT regulated company, within the next 18 months the Department of Transportation (DOT) will conduct a "new entrant" inspection to ensure that you are in compliance with all DOT regulations including the drug and alcohol testing requirements. If you are currently a DOT regulated company, you are subject to regular inspections to ensure compliance.
Avoid DOT fines, penalties and be complaint with all DOT drug and alcohol testing regulations! Coastal Drug Testing can assist small, medium and large DOT companies in complying with all requirements of 49 CFR Part 40.
DOT Drug Testing Locations in Downey CA
11411 BROOKSHIRE AVE STE 408 0.2 miles
DOWNEY, CA 90241
9353 IMPERIAL HWY GARDEN MEDICAL OFFICE,3RD FLOOR 1.3 miles
DOWNEY, CA 90242
8337 TELEGRAPH RD STE 104 2.0 miles
PICO RIVERA, CA 90660
11817 TELEGRAPH RD 3.0 miles
SANTA FE SPRINGS, CA 90670
3430 GARFIELD AVE 3.1 miles
LOS ANGELES, CA 90040
6538 TELEGRAPH RD 3.9 miles
LOS ANGELES, CA 90040
3364 E SLAUSON AVE 3.9 miles
VERNON, CA 90058
16444 PARAMOUNT BLVD 4.1 miles
PARAMOUNT, CA 90723
7300 ALONDRA BLVD STE 108 4.2 miles
PARAMOUNT, CA 90723
16660 PARAMONT BLVD STE 102 4.3 miles
PARAMOUNT, CA 90723
3611 MLK Blvd STE 108 4.6 miles
LYNWOOD, CA 90262
13440 IMPERIAL HWY 4.7 miles
SANTA FE SPRINGS, CA 90670
2476 S ATLANTIC BLVD 4.8 miles
COMMERCE, CA 90040
12385 WASHINGTON BLVD 5.1 miles
WHITTIER, CA 90606
12401 WASHINGTON BLVD 5.2 miles
WHITTIER, CA 90602
12462 PUTNAM ST ste 402 5.4 miles
WHITTIER, CA 90602
309 W BEVERLY BLVD 5.6 miles
MONTEBELLO, CA 90640
2300 W BEVERLY BLVD 5.6 miles
MONTEBELLO, CA 90640
6529 SEVILLE AVE 5.9 miles
HUNTINGTON PARK, CA 90255
5220 CLARK AVE STE 445 6.0 miles
LAKEWOOD, CA 90712
5205 Lakewood Blvd 6.1 miles
Lakewood, CA 90712
5203 LAKEWOOD BLVD 6.1 miles
LAKEWOOD, CA 90712
15330 VALLEY VIEW AVE STE 1 6.8 miles
LA MIRADA, CA 90638
4580 PACIFIC BLVD 6.8 miles
VERNON, CA 90058
3851 S SOTO ST 7.0 miles
VERNON, CA 90058
3688 S Soto St 7.0 miles
Vernon, CA 90058
2499 S WILMINGTON AVE 7.1 miles
COMPTON, CA 90220
16700 VALLEY VIEW AVE STE 180 7.2 miles
LA MIRADA, CA 90638
16702 VALLEY VIEW AVE 7.2 miles
LA MIRADA, CA 90638
19301 S SANTA FE AVE Ste 120 7.4 miles
COMPTON, CA 90221
15141 Whittier Blvd Ste 125, 7.4 miles
Whittier, CA 90603
40 CENTERPOINTE DR 7.9 miles
LA PALMA, CA 90623
11152 S MAIN ST 8.1 miles
LOS ANGELES, CA 90061
1907 E WASHINGTON BLVD 8.3 miles
LOS ANGELES, CA 90021
5862 AVALON BLVD 8.3 miles
LOS ANGELES, CA 90003
5451 LA PALMA AVE STE 24 8.4 miles
LA PALMA, CA 90623
12801 CROSSROADS PKWY S Ste 150 8.7 miles
CITY OF INDUSTRY, CA 91746
15401 S MAIN ST 8.9 miles
GARDENA, CA 90248
16630 S BROADWAY ST 9.3 miles
GARDENA, CA 90248
124 N VIGNES ST 9.5 miles
LOS ANGELES, CA 90012
2750 ATLANTIC AVE 9.7 miles
LONG BEACH, CA 90806
420 E 3rd St Ste 802, 9.7 miles
Los Angeles, CA 90013
2776 PACIFIC AVE 9.8 miles
LONG BEACH, CA 90806
3320 S HILL ST 9.8 miles
LOS ANGELES, CA 90007
9350 FLAIR DR Ste 102 9.9 miles
EL MONTE, CA 91731
20401 AVALON BLVD STE C 9.9 miles
CARSON, CA 90746
10861 CHERRY ST STE 202 10.0 miles
LOS ALAMITOS, CA 90720
455 E CARSON PLAZA DR 10.1 miles
CARSON, CA 90746
3144 SANTA ANITA AVE STE 205 10.1 miles
EL MONTE, CA 91733
1300 W 155TH ST STE 109 10.1 miles
GARDENA, CA 90247
482 W WILLOW ST 10.1 miles
LONG BEACH, CA 90806
1400 S GRAND AVE STE 612 10.1 miles
LOS ANGELES, CA 90015
100 S RAYMOND AVE 10.4 miles
ALHAMBRA, CA 91801
333 S HOPE ST STE C145 10.4 miles
LOS ANGELES, CA 90071
823 N BROADWAY 10.4 miles
LOS ANGELES, CA 90012
1720 TERMINO AVE 10.5 miles
LONG BEACH, CA 90804
1703 TERMINO AVE, STE 102 10.5 miles
LONG BEACH, CA 90804
929 GEORGIA ST 10.6 miles
LOS ANGELES, CA 90015
1149 W 190TH ST 10.7 miles
GARDENA, CA 90248
2101 MAGNOLIA AVE 10.7 miles
LONG BEACH, CA 90806
132 S BEAUDRY AVE 10.8 miles
LOS ANGELES, CA 90012
1127 Wilshire Blvd Ste 203&204, 10.8 miles
Los Angeles, CA 90017
1225 WILSHIRE BLVD 10.9 miles
LOS ANGELES, CA 90017
1313 W 8TH ST ste 100 10.9 miles
LOS ANGELES, CA 90017
16025 GALE AVE STE B10 11.0 miles
CITY OF INDUSTRY, CA 91745
940 E MAIN ST 11.1 miles
ALHAMBRA, CA 91801
2814 W LINCOLN AVE 11.3 miles
ANAHEIM, CA 92801
2301 W EL SEGUNDO BLVD 11.3 miles
HAWTHORNE, CA 90250
416 W LAS TUNAS DR, STE 204 11.3 miles
SAN GABRIEL, CA 91776
330 W. LAS TUNAS DR. STE 2 11.3 miles
SAN GABRIEL, CA 91776
1250 PACIFIC AVE 11.5 miles
LONG BEACH, CA 90813
1050 LINDEN AVE Ste 887 11.5 miles
LONG BEACH, CA 90813
23601 AVALON BLVD Ste 104 11.7 miles
CARSON, CA 90745
2131 W 3RD ST Ste 4 11.7 miles
LOS ANGELES, CA 90057
169 S ALVARADO ST STE 101 11.7 miles
LOS ANGELES, CA 90057
4500 RIVERVIEW AVE 11.8 miles
EL MONTE, CA 91731
333 S MAGNOLIA AVE 11.9 miles
ANAHEIM, CA 92804
1950 SUNNYCREST DR STE 1800 12.0 miles
FULLERTON, CA 92835
2720 N HARBOR BLVD STE 130 12.0 miles
FULLERTON, CA 92835
2151 N HARBOR BLVD 12.1 miles
FULLERTON, CA 92835
2231 S WESTERN AVE 12.2 miles
LOS ANGELES, CA 90018
710 N EUCLID ST STE 203 12.3 miles
ANAHEIM, CA 92801
1801 W ROMNEYA DR STE 106 12.3 miles
ANAHEIM, CA 92801
14619 PRAIRIE AVE 12.5 miles
LAWNDALE, CA 90260
11633 HAWTHORNE BLVD #215 12.7 miles
HAWTHORNE, CA 90250
21081 S WESTERN AVE STE 150 12.7 miles
TORRANCE, CA 90501
14148 FRANCISQUITO AVE 12.8 miles
BALDWIN PARK, CA 91706
3545 WILSHIRE BLVD STE 325 12.8 miles
LOS ANGELES, CA 90010
17487 HURLEY ST 12.9 miles
CITY OF INDUSTRY, CA 91744
7052 ORANGEWOOD AVE STE 6 13.0 miles
GARDEN GROVE, CA 92841
117 E LIVE OAK AVE STE 101 13.1 miles
ARCADIA, CA 91006
50 ALESSANDRO PL. SUITE A10 13.2 miles
PASADENA, CA 91105
1006 W LA PALMA AVE 13.2 miles
ANAHEIM, CA 92801
4253 REDONDO BEACH BLVD 13.4 miles
LAWNDALE, CA 90260
100 W CALIFORNIA BLVD 13.6 miles
PASADENA, CA 91105
12600 BEACH BLVD 13.6 miles
STANTON, CA 90680
18575 Gale Ave Ste 155 13.7 miles
City of Industry, CA 91748
18575 GALE AVE STE 295 13.7 miles
CITY OF INDUSTRY, CA 91748
18335 VALLEY BLVD 13.9 miles
LA PUENTE, CA 91744
1001 E IMPERIAL HWY 14.0 miles
BREA, CA 92821
566 E LAMBERT RD 14.0 miles
BREA, CA 92821
725 S ORANGE AVE 14.1 miles
WEST COVINA, CA 91790
1300 N VERMONT AVE 14.1 miles
LOS ANGELES, CA 90027
100 Oceangate, P245 14.1 miles
LONG BEACH, CA 90802
On-site only 14.1 miles
Long Beach, CA 90802
960 E GREEN ST, STE 164 14.1 miles
PASADENA, CA 91106
25965 NORMANDIE AVE FL 1 14.2 miles
HARBOR CITY, CA 90710
1750 E COLORADO BLVD 14.3 miles
PASADENA, CA 91106
56 E DUARTE RD 14.4 miles
ARCADIA, CA 91006
1111 E LA PALMA AVE 14.4 miles
ANAHEIM, CA 92805
5525 W SLAUSON AVE 14.5 miles
LOS ANGELES, CA 90056
21320 HAWTHORNE BLVD STE 227 14.5 miles
TORRANCE, CA 90503
920 N NASH ST 14.6 miles
EL SEGUNDO, CA 90245
2707 E VALLEY BLVD STE 116 14.7 miles
WEST COVINA, CA 91792
222 W EULALIA ST STE 101 14.7 miles
GLENDALE, CA 91204
4101 TORRANCE BLVD 14.7 miles
TORRANCE, CA 90503
6033 W CENTURY BLVD STE 200 14.8 miles
LOS ANGELES, CA 90045
7955 WESTMINSTER BLVD 14.9 miles
WESTMINSTER, CA 92683
801 S CHEVY CHASE DR 14.9 miles
GLENDALE, CA 91205
5455 WILSHIRE BLVD STE 1802 14.9 miles
LOS ANGELES, CA 90036
801 S Chevy Chase Dr Ste 50, 14.9 miles
Glendale, CA 91205
3330 LOMITA BLVD 15.0 miles
TORRANCE, CA 90505
9601 S SEPULVEDA BLVD 15.1 miles
LOS ANGELES, CA 90045
8930 S SEPULVEDA BLVD STE 200 15.1 miles
LOS ANGELES, CA 90045
8800 S SEPULVEDA BLVD STE 8 15.2 miles
LOS ANGELES, CA 90045
390 N SEPULVEDA BLVD STE 1000 15.2 miles
EL SEGUNDO, CA 90245
947 S ANAHEIM BLVD STE 120 15.2 miles
ANAHEIM, CA 92805
8726 S SEPULVEDA BLVD 15.2 miles
LOS ANGELES, CA 90045
23441 Madison St Ste 300, 15.2 miles
Torrance, CA 90505
110 N LA BREA AVE 15.2 miles
INGLEWOOD, CA 90301
1700 E WALNUT AVE 15.2 miles
EL SEGUNDO, CA 90245
1000 S ANAHEIM BLVD STE 200 15.2 miles
ANAHEIM, CA 92805
640 S PLACENTIA AVE 15.3 miles
PLACENTIA, CA 92870
1717 E LINCOLN AVE 15.3 miles
Anaheim, CA 92805
5971 VENICE BLVD FL 4 15.3 miles
LOS ANGELES, CA 90034
1253 VINE ST ste 19A 15.4 miles
LOS ANGELES, CA 90038
520 N Prospect Ave Ste 305, 15.4 miles
Redondo Beach, CA 90277
15464 GOLDENWEST ST 15.4 miles
WESTMINSTER, CA 92683
211 S STATE COLLEGE BLVD STE 325 15.4 miles
ANAHEIM, CA 92806
23441 MADISON ST.BLD8,STE 110 15.5 miles
TORRANCE, CA 90505
15705 ARROW HWY STE 6B 15.9 miles
IRWINDALE, CA 91706
1526 N EDGEMONT ST FL 1 15.9 miles
LOS ANGELES, CA 90027
230 N MARYLAND AVE STE 110 16.0 miles
GLENDALE, CA 91206
544 N GLENDALE AVE 16.1 miles
GLENDALE, CA 91206
432 W BROADWAY 16.1 miles
GLENDALE, CA 91204
1300 N LA BREA AVE 16.1 miles
HOLLYWOOD, CA 90028
8512 Whitworth Dr 16.1 miles
LOS ANGELES, CA 90035
5345 IRWINDALE AVE 16.3 miles
IRWINDALE, CA 91706
1300 N KRAEMER BLVD 16.4 miles
ANAHEIM, CA 92806
8501 Wilshire Blvd Suite 305, 16.5 miles
Beverly Hills, CA 90211
221 E GLENOAKS BLVD STE 130 16.6 miles
GLENDALE, CA 91207
2640 E GARVEY AVE S STE 106 16.6 miles
WEST COVINA, CA 91791
909 E YORBA LINDA BLVD STE H 16.7 miles
PLACENTIA, CA 92870
1201 N. ROSE DR. SUITE 202 17.0 miles
PLACENTIA, CA 92870
6000 N IRWINDALE AVE STE A 17.0 miles
IRWINDALE, CA 91702
1301 N ROSE DR 17.1 miles
PLACENTIA, CA 92870
12001 W WASHINGTON BLVD 17.1 miles
LOS ANGELES, CA 90066
1294 W 6th St Ste 206, 17.1 miles
San Pedro, CA 90731
8700 BEVERLY BLVD 17.1 miles
WEST HOLLYWOOD, CA 90048
1360 W 6TH ST STE 190 17.1 miles
SAN PEDRO, CA 90732
1300 W 7TH ST 17.2 miles
SAN PEDRO, CA 90732
12212 W WASHINGTON BLVD 17.2 miles
LOS ANGELES, CA 90066
6520 N IRWINDALE AVE STE 100 17.5 miles
IRWINDALE, CA 91702
2121 S TOWNE CENTRE PL STE 100 17.5 miles
ANAHEIM, CA 92806
17122 BEACH BLVD STE 104 17.6 miles
Huntington Beach, CA 92647
554 E San Bernardino Rd Ste 10, 17.8 miles
Covina, CA 91723
17024 MAGNOLIA ST 18.1 miles
FOUNTAIN VALLEY, CA 92708
8970 WARNER AVE 18.1 miles
FOUNTAIN VALLEY, CA 92708
17822 BEACH BL SUITE 242 18.3 miles
HUNTINGTON BEACH, CA 92647
501 S BUENA VISTA ST 18.6 miles
BURBANK, CA 91505
411 N LAKEVIEW AVE 18.7 miles
ANAHEIM, CA 92807
1310 W Stewart Dr Ste 304, 18.8 miles
Orange, CA 92868
2701 W ALAMEDA AVE STE 203 18.8 miles
BURBANK, CA 91505
11560 W PICO BLVD 18.9 miles
LOS ANGELES, CA 90064
18561 BEACH BLVD 18.9 miles
HUNTINGTON BEACH, CA 92648
1010 W La Veta Ave Ste 140, 19.0 miles
Orange, CA 92868
946 W TOWN AND COUNTRY RD 19.1 miles
ORANGE, CA 92868
18800 Main St Ste 111, 19.1 miles
Huntington Beach, CA 92648
705 W LA VETA AVE STE 102 19.1 miles
ORANGE, CA 92868
18811 FLORIDA ST 19.2 miles
HUNTINGTON BEACH, CA 92648
11180 E Warner Ave Ste 159, 19.3 miles
Fountain Valley, CA 92708
9920 TALBERT AVE 19.4 miles
FOUNTAIN VALLEY, CA 92708
9900 Talbert Ave Ste 203, 19.4 miles
Fountain Valley, CA 92708
1045 N TUSTIN ST 19.5 miles
ORANGE, CA 92867
757 WESTWOOD PLZ 19.9 miles
LOS ANGELES, CA 90095
250 S GRAND AVE 20.0 miles
GLENDORA, CA 91741
3100 W WARNER AVE 20.1 miles
SANTA ANA, CA 92704
11645 WILSHIRE BLVD STE 830 20.2 miles
LOS ANGELES, CA 90025
3413 W PACIFIC AVE 102 20.3 miles
BURBANK, CA 91505
1350 W COVINA BLVD 20.3 miles
SAN DIMAS, CA 91773
3401 S HARBOR BLVD 20.4 miles
SANTA ANA, CA 92704
867 S TUSTIN ST 20.5 miles
ORANGE, CA 92866
11611 SAN VICENTE BLVD 20.5 miles
LOS ANGELES, CA 90049
801 CORPORATE CENTER DR STE 130 20.7 miles
POMONA, CA 91768
9122 ADAMS AVE 20.8 miles
HUNTINGTON BEACH, CA 92646
2121 SANTA MONICA BLVD 20.8 miles
SANTA MONICA, CA 90404
1908 SANTA MONICA BLVD STE 5 20.8 miles
SANTA MONICA, CA 90404
20770 ASH CIR STE 200 20.9 miles
YORBA LINDA, CA 92886
3413 W PACIFIC AVE 21.1 miles
BURBANK, CA 91505
1250 16TH ST 21.1 miles
SANTA MONICA, CA 90404
800 N Tustin Ave Ste A 21.5 miles
Santa Ana, CA 92705
801 N Tustin Ave Ste 102, 21.5 miles
Santa Ana, CA 92705
209-1 Takashiho Yomitan Village 21.5 miles
SANTA MONICA, CA 90403
17542 17TH ST STE 330 21.5 miles
TUSTIN, CA 92780
100 N TUSTIN AVE 21.7 miles
TUSTIN, CA 92780
1716 W HOLT AVE 21.9 miles
POMONA, CA 91768
1530 E Edinger Ave Ste 1 21.9 miles
Santa Ana, CA 92705
5475 E LA PALMA AVE 22.1 miles
ANAHEIM, CA 92807
1619 E Edinger Ave 22.2 miles
Santa Ana, CA 92705
4312 Woodman Ave Ste 102 22.3 miles
Sherman Oaks, CA 91423
11631 VICTORY BLVD STE 101 22.4 miles
NORTH HOLLYWOOD, CA 91606
1534 E WARNER AVE 22.5 miles
SANTA ANA, CA 92705
1241 E DYER RD STE 145 22.5 miles
SANTA ANA, CA 92705
11432 VANOWEN ST 22.6 miles
N HOLLYWOOD, CA 91605
6405 WILKINSON AVE 23.1 miles
NORTH HOLLYWOOD, CA 91606
17232 RED HILL AVE 23.2 miles
IRVINE, CA 92614
1000 BRISTOL ST N Ste 1B 23.3 miles
NEWPORT BEACH, CA 92660
502 S GAREY AVE 23.3 miles
POMONA, CA 91766
301 VICTORIA ST 23.6 miles
COSTA MESA, CA 92627
13768 Roswell Suite 220, 23.9 miles
Chino, CA 91710
2492 WALNUT AVE STE 110 24.0 miles
TUSTIN, CA 92780
2362 MORSE AVE 24.2 miles
IRVINE, CA 92614
1419 SUPERIOR AVE STE 1 24.5 miles
NEWPORT BEACH, CA 92663
320 SUPERIOR AVE. STE 150 24.5 miles
NEWPORT BEACH, CA 92663
3002 DOW AVE STE 204 24.6 miles
TUSTIN, CA 92780
6410 VAN NUYS BLVD STE B 24.9 miles
VAN NUYS, CA 91401
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Local Area Info: Downey, California
Downey is a city located in southeast Los Angeles County, California, United States, 13 mi (21 km) southeast of downtown Los Angeles. It is considered part of the Gateway Cities. The city is the birthplace of the Apollo space program. It is also the home of the oldest still operational McDonald's restaurant in the world. As of the 2010 census, the city had a total population of 111,779.
Prior to the arrival of the Spanish in Alta California, the area that is now Downey was inhabited by the Tongva ethnic group, which came to be called the Gabrielino by the Spanish. The nearest Tongva settlements appear to have been just north and northeast of present-day Downey, although there is difficulty in locating them precisely. The villages of Naxaaw’nga and Sehat seem to have been situated near the present-day community of Los Nietos, or perhaps farther west on sites that were lost to floods of the San Gabriel River. Chokiishnga and Huutnga are other Tongva place names that may have referred to villages in the general area north of Downey between the San Gabriel River and Rio Hondo. In all four cases, it is difficult to relate the original location descriptions, based on ranchos and land grants, to more specific sites identifiable by today's landmarks.
Mission San Gabriel Arcángel was initially founded on September 8, 1771, near these concentrations of Tongva population, at a site in the Whittier Narrows on a bluff overlooking the Rio Hondo near the intersection of today's San Gabriel Blvd and Lincoln Avenue. After five years, flooding forced the relocation of the mission to its present site in San Gabriel.[citation needed]