| Business | Phone |
| American Pipeline Engineering 1732 Almond Ave, Livermore 94550 | (925) 443-9751 |
| B D Evans Construction 5237 Southfront Rd, Livermore 94551 | (925) 447-7642 |
| Mountain Cascade Inc 555 Exchange Ct, Livermore 94550 | (925) 373-8370 |
| Smith & Denison Construction 500 Greenville Rd, Livermore 94550 | (925) 606-4433 |