{"id":126,"date":"2025-06-26T10:35:12","date_gmt":"2025-06-26T17:35:12","guid":{"rendered":"https:\/\/tcdrilling.com\/?page_id=126"},"modified":"2026-01-31T09:15:32","modified_gmt":"2026-01-31T17:15:32","slug":"company-profile","status":"publish","type":"page","link":"https:\/\/tcdrilling.com\/?page_id=126","title":{"rendered":"Company Profile"},"content":{"rendered":"\n<p><strong><em>Tri-County Drilling, Inc.<\/em><\/strong><em> was founded by Sheryl Peterson in 1987 to provide environmental and geotechnical drilling services to Southern California. As a woman-owned business, <\/em><strong><em>Tri-County Drilling <\/em><\/strong><em>is a certified WBE\/DBE Contractor and has served as a Subcontractor on numerous government projects.<\/em><strong><em> <\/em><\/strong><em>Since its inception,<\/em><strong><em> Tri-County Drilling <\/em><\/strong><em>has rapidly expanded its scope of available services to provide state-of-the-art equipment and trained personnel for our clients. Our personnel have completed the 40-hour OSHA training course and refresher courses as well as numerous seminars and classes in rig safety and innovative techniques.&nbsp; Medical monitoring is also provided annually.&nbsp; Our drilling capabilities include:<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hollow Stem Auger Drilling<\/li>\n\n\n\n<li>Mud Rotary, Air Percussion and Air Rotary Drilling, ODEX Casing Advance<\/li>\n\n\n\n<li>HQ and NX Diamond Core Drilling by Wireline and conventional methods (single and dual tube)&nbsp;<\/li>\n\n\n\n<li>Continuous Sampling, Drive Sampling, Shelby Tube Sampling, Standard Penetration Tests&nbsp;&nbsp;<\/li>\n\n\n\n<li>Wireline Single and Straddle Packer Testing<\/li>\n\n\n\n<li>Water Wells<\/li>\n\n\n\n<li>Well repair and maintenance\u00a0<\/li>\n\n\n\n<li>Well Destruction, Grouting<\/li>\n\n\n\n<li>Permeability Testing, Aquifer\/Pump Testing<\/li>\n\n\n\n<li>Installation of Monitoring Wells, Vapor Wells, Lysimeters, Inclinometers, Extensometers<\/li>\n\n\n\n<li>Well Development and Testing by Pumping, Surge Blocking, Bailing and Air Lift<\/li>\n\n\n\n<li>Limited Access Coring, Air Percussion, Hollow Stem Auger, and Angle Drilling<\/li>\n\n\n\n<li>Geoprobe Direct Push\/Probe Drilling and Sampling<\/li>\n\n\n\n<li>Off Road Drilling with All Terrain Rig; Helicopter Portable Drill Rigs<\/li>\n\n\n\n<li>Geothermal Wells up to 380 ft&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/li>\n\n\n\n<li>Residential and Commercial Water Wells up to 1500 ft.<\/li>\n\n\n\n<li>Cathodic Protection Anodes<\/li>\n<\/ul>\n\n\n\n<p><em>Our inventory of drilling rigs feature hollow stem auger capabilities to 300 feet and mud rotary, air percussion and rock core drilling to depths up to 1600 feet.&nbsp; Our typical project profile includes:<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Domestic and Commercial Water Wells and Geothermal wells<\/li>\n\n\n\n<li>Installation and Development of Hazardous Materials Monitoring Wells<\/li>\n\n\n\n<li>Installation of Deep Inclinometer Casing in Hard Rock Conditions<\/li>\n\n\n\n<li>Geotechnical Borings, Rock Coring, Excavation of Test Trenches<\/li>\n\n\n\n<li>Helicopter Portable Drilling rigs capable of auger, mud rotary, rock coring and air percussion<\/li>\n\n\n\n<li>Steep Terrain and Limited Access Hollow Stem Auger, Mud Rotary, Coring and Air Percussion Drilling<\/li>\n\n\n\n<li>Permeability Testing, Aquifer Testing, Percolation Tests &nbsp;<\/li>\n\n\n\n<li>Installation of Cathodic Protection Wells by Air Rotary or Mud Rotary<\/li>\n<\/ul>\n\n\n\n<p><em>Our diverse experience, drilling capabilities, trained personnel, and modern equipment make <\/em><strong><em>Tri-County Drilling, Inc.<\/em><\/strong><em> uniquely qualified to provide unparalleled customer service as well as the latest technology in the field of environmental\/geotechnical drilling.<\/em><em><\/em><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tri-County Drilling, Inc. was founded by Sheryl Peterson in 1987 to provide environmental and geotechnical drilling services to Southern California. As a woman-owned business, Tri-County Drilling is a certified WBE\/DBE Contractor and has served as a Subcontractor on numerous government projects. Since its inception, Tri-County Drilling has rapidly expanded its scope of available services to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-126","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Company Profile - Tri-County Drilling, Inc<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tcdrilling.com\/?page_id=126\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Company Profile - Tri-County Drilling, Inc\" \/>\n<meta property=\"og:description\" content=\"Tri-County Drilling, Inc. was founded by Sheryl Peterson in 1987 to provide environmental and geotechnical drilling services to Southern California. 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