Testlab Inc. 

Hayward Corporate Office

2463 Tripaldi Way

Hayward, CA 94545


PH (408) 988-0101

FX (408) 988-0103


Santa Clara Office

991 George Street

Santa Clara, CA 95954


PH (408) 988-0101

FX (408) 988-0103


To request a proposal or discuss your specific project please contact:


Customer service:



Fresno Office

4284 N. Knoll Drive

Fresno, CA 93722


PH (559) 272-1375



Altadena Office

PH (909) 510-5535


Hayward|Santa Clara- 408-988-0101 | Fresno- 559-272-1375 | Altadena- 909-510-5535


After the underground utilities are electronically designated using either electromagnetic pipe locators, acoustic pipe locators, ground penetrating radar or a combination of any of them, the next stage in data reliability, equivalent to Quality Level A, is obtained by Vacuum excavation AKA potholing.

Utility Locating

We utilize state-of-the-art Electromagnetic pipe locators, ground penetrating radar (GPR) systems and CCTV/sondes to locate underground Utilities.


Utility Locating- Flyer

Wrong password.