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.

6 510-537-6539 Lic#: 424355 Fax: 510-537-2946 Krazan & Associates 215 W Dakota Ave. 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.

7 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.

8 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.

9 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.

10 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