| Business | Phone |
| A-C Ind Svc Corp 1111 Marauder St, Chico 95973 | (530) 343-5488 |
| Alliance Environmental Svc 4191 Stone Valley Ct, Chico 95973 | (530) 345-8562 |
| Eco-Analysts 2550 Floral Ave # 10, Chico 95973 | (530) 342-5991 |
| William Bono Environmental Svc 2205 Nord Ave, Chico 95926 | (530) 342-1333 |
| Advanced Hydrogeo 197 Via Mission Dr, Chico 95928 | (530) 893-1888 |
| Alcam Environmental 7 Bartram Ter, Chico 95926 | (530) 228-5080 |
| Broadbent & Assoc Inc 17 Williamsburg Ln, Chico 95926 | (530) 566-1400 |
| Butte Environmental Mgmt Inc 455 E 9th Ave, Chico 95926 | (530) 345-8975 |
| Foothill Associates 140 Yellowstone Dr # 100, Chico 95973 | (530) 893-6700 |
| Golden Hills Environmental Svc Chico 95926 | (530) 891-4103 |
| Hess & Assoc 2684 Brenni Way, Chico 95973 | (530) 892-8822 |
| Lane Hess & Assoc 211 Legacy Ln, Chico 95973 | (530) 899-2900 |
| Lassen Park Foundation Chico 95926 | (530) 898-9309 |
| Mechoopda Indian Tribe 2211 Saint George Ln, Chico 95926 | (530) 343-6614 |
| North State Environmental Po Box 9335, Chico 95927 | (530) 894-6327 |
| North State Resources Inc 500 Orient St # 150, Chico 95928 | (530) 345-4552 |
| Sacramento River Partners 358 E 6th St, Chico 95928 | (530) 894-5401 |
| Terrestrial Connections Chico 95926 | (530) 896-0288 |
| Upstate California Llc 333 Main St, Chico 95928 | (530) 345-0877 |
| A-C Industrial Svc Corp 1111 Marauder St, Chico 95973 | (530) 343-5488 |
| Chico Environmental 211 Legacy Ln, Chico 95973 | (530) 899-2900 |
| Hanover Environmental Svc 1072 Marauder St, Chico 95973 | (530) 342-1333 |