APPROVED DRILLER LIST-CONTRA COSTA COUNTY

1 APPROVED DRILLER LIST-CONTRA COSTA COUNTY Updated August 15, 2016 Note: This list is provided for your convenience. It is not intended to recommend one DRILLER over another. This list may change without notice. Access Soil Drilling, Inc. 1306 S. Delaware St. San Mateo, CA 94402 Phone: 650-808-2200 Lic#: 620540 Fax: 650-345-5617 Advanced GeoEnvironmental 837 Shaw Ave. Stockton, CA 95215 Phone: 209-467-1006 Lic#: 680227 Fax: 209-467-1118 All Well Abandonment 6626 Merchandise Way Diamond Springs, CA 95619 Phone: 530-644-1609 Lic#: 848359 Fax: 530-644-1439 Altamont Water Well & Pump Lic# 958797 5658 Oakmont Circle Livermore, CA 94551 Phone: 925-980-1066 American Construction & Supply 45 San Clemente Dr. Ste A-100 Corte Madera, CA 94925 Phone: 415-927-2024 Lic#: 310599 Fax: 415-927-1723 ARS Technologies Lic# 965482 135 Mason Circle Ste K Concord, CA 94520 Phone: Fax: 510-280-2865 BAS see Tetra Tech Blaine Tech Services Lic#: 746684 1680 Rogers Ave San Jose, CA 95112 Phone: 408-573-0555 Boart Longyear Co.

2 1333 W 9th St. Upland, CA 91786 Phone: 909-946-1605 Lic#: 694686 Fax: 909-946-1608 Bradley & Sons 3625 S. Highland Del Rey, CA 93616 Phone: 559-441-1401 Lic#: 414178 Fax: 559-441-1199 Britton Exploration 23051 Evergreen Ln. Los Gatos, CA 95033 Phone: 408-355-5781 Lic#: 849905 Fax: 408-353-2152 Brittsan CPT, Inc. 12830 Schoeffler Rd. Wilton, CA 95693 Phone: 916-508-4497 Lic#: 880868 Fax: 916-760-4560 Cal Geo Drilling Co. 743 Mitchell Rd. Turlock, CA 95380 Phone: 209-632-9749 Lic#: 882931 Fax: 209-667-1327 Cal Nev GeoExploration Lic# 768342 PO Box 417 Roseville, CA 95661 Phone: 916-524-1270 California Geotech Lic# 812382 3987 First St, #E Livermore, CA 94551 Phone: 831-634-1964 California Push Technologies 104 Constitution Dr. Ste 2 Menlo Park, CA 94025 Phone: 650-346-1490 Lic#: 884827 Fax: 650-854-0301 Canepa & Sons, Inc 14384 Cuesta Ct Sonora, CA 95370 Phone: 209 532-1136 Lic# 425749 Cascade Drilling Inc.

3 Lic# 938110 120 South 23rd St Richmond, CA 94804 Phone: 510 478-0858 Cenozoic Exploration Lic# 682910 2090 Cox Rd Aptos, CA 95003 Phone: 831 689-9222 Clear Heart Drilling 555 W. College Ave. Ste B Santa Rosa, CA 95401 Phone: 707-568-6095 Lic#: 780357 Condon-Johnson & Associates Lic#: 300068 480 Roland Way Oakland, CA 94806 Phone: 510-636-2100 Conestoga Rovers & Associates 2000 Opportunity Dr, Ste 110 Roseville, CA 95678 Phone: 916-751-4100 Lic#: 936574 Fax: 916-751-4199 Confluence Environmental 3308 El Camino Ave Ste 300 Sacramento, CA 95864 Phone: 916 760-7641 Lic# 913194 Fax: Corrpro Companies 13011 Florence Ave. Santa Fe Springs, CA 90670 Phone: 562-944-1636 Lic#: 864878 Fax: 562-946-5634 D Bess Pump & Well Elect 1115 Mt. George Ave. Napa, CA 94558 Phone: 707-253-0574 Lic#: 487027 Fax: 707-253-0574 Dan s Water Well & Pump 3494 Tassajara, #203 Danville, CA 94506 Phone: 888-326-9355 Lic#: 892546 Fax: 925-454-3380 Directed Technologies Drilling, Inc Lic# 720357 100 Rolling Ridge Dr Bellfonte, PA 16823 Phone: 800 239-5950 Diversified Pump & Well Box 861 Knightsen, CA 94548 Phone: 925-584-9276 Lic#: 858598 Fax: 925-679-0731 Drill Tech Drilling & Shoring 2200 Wymore Way Antioch, CA 94509 Phone: 925-978-2060 Lic#: 745354 Fax: 925-978-2063 EnProb Environmental Probing Box 6093 Oroville, CA 95966 Phone: 530-589-2019 Lic#: 1012248 Fax: 530-589-2230 Environmental Control Associates 3011 Twin Palms Dr.

4 Aptos, CA 95003 Phone: 831-662-8178 Lic#: 695970 Fax: 831-662-8179 Environmental West Exploration Lic# 721240 PO Box 11095 Spokane, WA 99211 Phone: 509 534-2740 Exploration Drilling 1206 Johnson St. Redwood City, CA 94061 Phone: 650-365-3472 Lic#: 431604 Fax: Exploration Geoservices 1535 Industrial Ave. San Jose, CA 95112 Phone: 408-280-6822 Lic#: 484288 Fax: 408-356-8315 Fagala Lic#: 953273 2283 Willow Ave Pittsburg, CA 94565 Phone: 510 258-5167 Fast Tek Engineering 227-A Tewksbury Ave. Point Richmond, CA 94801 Phone: 510-232-2728 Lic#: 624461 Fax: 510-232-2823 Fisch Environmental Exploration 3150 Johnson Rd. Hydesville, CA 95547 Phone: 707-768-9800 Lic#: 683865 Fax: 707-768-9801 Fox Loomis 6901 McComber St. Sacramento, CA 95828 Phone: 916-383-2140 Lic#: 372314 Fax: 916-383-802 Fugro Consultants Lic# 909719 4820 McGrath St, Ste 100 Ventura, CA 93003 Phone: 805 650-7000 GeoCon Consultants Lic# 716050 6970 Flanders Dr San Diego, CA 92121 Phone: 858 558-6100 Geo-Ex Drilling Lic#: 954267 1510 Madera Dixon, CA 95620 Phone: Fax: 916 799-8198 Gregg Drilling & Testing 950 Howe Rd.

5 Martinez, CA 94553 Phone: 925-313-5800 Lic#: 485165 Fax: 925-313-0302 Guardino Well Drilling 4825 Croy Rd. Morgan Hill, CA 95037 Phone: 408-779-5904 Lic#: 664960 Fax: 408-778-1692 Gulf Shore Construction Lic# 964224 PO Box 1501 Shingle Springs, CA 95682 Phone: 916-939-4117 Hennings Bros Drilling 3525 Pelandale Ave. Modesto, CA 95356 Phone: 209-545-1185 Lic#: 290813 Fax: 209-545-1729 HEW Drilling Company Box 51182 Palo Alto, CA 94303 Phone: 650-322-2851 Lic#: 604987 Fax: 650-322-0339 Hillside Geotechnical Drilling Box 143 Tracy, CA 95378 Phone: 209-465-5580 Lic#: 800276 Fax: 209-465-5580 JJ Pump & Well Service, Inc Lic# 811851 Well flow test only no drilling 2063 Main St, #507 Oakley, CA 94561 Phone: 925 260-7727 John Sarmiento Lic# 692722 PO Box 2344 Orinda, CA 94563 Phone: 650 906-8803 K DeJesus Pump & Well Drilling P O Box 861 Knightsen, CA 94548 Phone: 925-585-9276 Lic#: 858598 Phone: 925-634-3392 Kleinfelder 6700 Koll Center Parkway, #120 Pleasanton, CA 94588 Phone: 925-484-1700 Lic#: 467252 Fax: McRae Drilling PO Box 188 Mt Eden, CA 94547 Phone: 510-537-6539 Lic#: 424355 Fax: 510-537-2946 Krazan & Associates 215 W Dakota Ave.

6 Clovis, CA 93612 Phone: 559-348-2200 Lic#: 49908 Fax: 559-348-2201 Kvilhaug Drilling & Pump PMB 346 5055 Business Center Ste 108 Fairfield, CA 94534 Phone: 925-685-6613 Lic#: 482390 Fax: 925-685-6678 Maggiora Bros Drilling, Inc Lic# 249957 595 Airport Blvd Watsonville, CA 95076 Phone: Fax: 800 728-1480 831 724-3228 Martell Water Systems 1818 Loveridge Rd. Pittsburg, CA 94565 Phone: 925-432-4282 Lic#: 510952 Fax: 925-432-8149 Middle Earth Geo Testing 954 N. Lemon St. Orange, CA 92867 Phone: 714 210-5971 Lic#: 899451 Fax: 714-2310-5971 Modern Technology Resources (MTR) Lic# 965267 10 Main Ave, Unit 6 Sacramento, CA 95691 Phone: 916-813-0253 Moore-Twining Lic# 506159 2527 Fresno St Fresno, CA 93721 Phone: 559 268-7021 Myers Bros. Well Drilling, Inc Lic#: 548214 PO Box 1283 Hanford, CA 93232 Phone: Fax: 559 582-9031 559 582-5744 National EWP, Inc Lic# 953646 630 Lincoln Ave Woodland, CA 95695 Phone: Fax: 510 236-6282 510 236-0168 Neil O Anderson & Associates, Inc Lic# 669004 aka Terracon 902 Industrial Way Lodi, CA 95240 Phone: 209 367-3701 North Star Drilling 429 Farinelli Pkwy Escalon, CA 95320 Phone: 209-838-7492 Lic#: 833906 Fax: North State Drilling aka Well Industries, Inc Lic# 812678 3282 Highway 32 Chico, CA 95973 Phone: 530 891-5545 Pacific Coast Well & Pump PO Box 2788 San Ramon, CA 94583 Phone: 510 581-6000 Lic#: 810579 Pacific Gas & Electric PG&E projects only PC Exploration 3883 Cincinnati Ave Rocklin, CA 95765 Phone: 916-434-4200 Lic#: 885630 Fax: 916-434-4206 Pearson Drilling Co.

7 P O Box 1031 Forestville, CA 95436 Phone: 707-529-9798 Lic#: 781870 Fax: Penecore Drilling 220 N. East St Woodland, CA 95776 Phone: 530-681-3198 Lic#: 906899 Fax: Pitcher Drilling 218 Demeter St. E. Palo Alto, CA 94303 Phone: 650-328-8910 Lic#: 263085 Fax: 650-328-3621 Precision Sampling Inc. 2365 Wigwam Dr. Stockton, CA 95205 Phone: 209-465-8712 Lic#: 636387 Fax: 209-465-8773 RJ Vannucci, ENT 25125 State Hwy 16 Capay, CA 95607 Phone: 530-796-4578 Lic#: 791304 Fax: 530-796-4579 RoadRunner Drilling & Pump 2 Deaner Ave Woodland, CA 95776 Phone: 530-406-8559 Lic#: 803909 Fax: 530-666-7854 Salem Engineering/Salem Well Drilling Lic# 970772 4729 W. Jacquelyn Ave Fresno, CA 93722 Phone: 559-271-9700 Taber Drilling 536 Galveston St West Sacramento, CA 95691 Phone: 916-371-8234 Lic#: 969927 Fax: 916-371-7265 TEA (Toxicological & Enviro Assoc) Lic# 823875 10636 Linkwood Ct Baton Rouge, LA 70810 Phone: 225-7673880 Technicon Engineering 4539 N.

8 Brawley Ave. #108 Fresno, CA 93722 Phone: 559-276-9311 Lic#: 767888 Fax: 559-276-9344 TEG- Northern California, Inc. 11350 Monier Park Pl. Rancho Cordova, CA 95742 Phone: 916-853-8010 Lic#: 706568 Fax: 916-853-8020 Terracon see Neil O. Anderson 5075 Commercial Cir, Concord, CA 94520 Phone: 925 609-7224 Tetra Tech BAS, Inc Lic# 572017 1360 Valley Vista Dr Diamond Bar, CA 91765 Phone: 909-860-7777 Tri Valley Drilling Services 1349 North Olive Street Ventura, CA 93001 Phone: 805-643-3144 Lic#: 672005 Fax: 805-643-1801 The Consulting Group 394 Cecilia Way Tiburon, CA 94920 Phone: 415-381-2560 Lic#: 540389 Fax: 415-381-1741 Twining Laboratories Inc. Box 1472/2527 Fresno St. Fresno, CA 93721 Phone: 559-268-7021 Lic#: 506159 Fax: 559-268-7126 V&W Drilling 3806 Duck Creek Dr. Stockton, CA 95215 Phone: 209-469-7700 Lic#: 720904 Viking Drillers, Inc. 5950 Granite Lake Dr Granite Bay, CA 95746 Phone: 916-742-1500 Lic#: 476668 Fax: 916-772-3003 Vapor Tech Services 2560 Barringon Ct Hayward, CA 94545 Phone: 415-378-0415 Lic#: 916085 Vironex 1641 Challenge Dr, Unit A Concord, CA 94520 Phone: 925-849-6970 Lic#: 1006597 Fax: Weeks Drilling & Pump Company Box 176 Sebastopol, CA 95473 Phone: 707-542-3272 Lic#: 177681 Fax: 707-823-4258 Woodward Drilling Lic#: 710079 Box 336 Rio Vista, CA 94571 Phone: Fax: 707 374-4300 707 374-5677