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Strict Standards: Non-static method Object::camelcase() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/libraries/loader.php on line 290

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HSI Engineering Clients Engineers
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Strict Standards: Non-static method Loader::db() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/task_permission.php on line 67

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Strict Standards: Non-static method PermissionsCache::getObject() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 70

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Strict Standards: Non-static method Area::getOrCreate() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/block.php on line 59

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Strict Standards: Non-static method Cache::get() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/package.php on line 61

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Strict Standards: Declaration of SelectAttributeTypeController::exportValue() should be compatible with AttributeTypeController::exportValue(SimpleXMLElement $akv) in /home/richardharo/hsi-engineering.com/concrete/models/attribute/types/select/controller.php on line 506

Strict Standards: Declaration of SelectAttributeTypeController::saveKey() should be compatible with AttributeTypeController::saveKey() in /home/richardharo/hsi-engineering.com/concrete/models/attribute/types/select/controller.php on line 506

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Strict Standards: Non-static method PermissionsCache::exists() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 69

Strict Standards: Non-static method PermissionsCache::getIdentifier() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 15

Strict Standards: Non-static method Loader::db() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/collection_version.php on line 38

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Strict Standards: Non-static method PermissionsCache::getIdentifier() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 15

Strict Standards: Non-static method PermissionsCache::getObject() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 70

Strict Standards: Non-static method PermissionsCache::getIdentifier() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/permissions.php on line 45

Strict Standards: Non-static method Area::getOrCreate() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/block.php on line 59

Strict Standards: Non-static method Area::get() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/area.php on line 160

Strict Standards: Non-static method Cache::get() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/area.php on line 127

Strict Standards: Non-static method Cache::key() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/libraries/cache.php on line 117

Strict Standards: Non-static method Cache::get() should not be called statically in /home/richardharo/hsi-engineering.com/concrete/models/block.php on line 63

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ABOUT US> OUR CLIENTS> Engineers


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As an expert in chemical engineering of soils utilizing quicklime, cement and fly ash, HSI provides sub-consultant services to the engineering community. Our specialty services provide a unique perspective to the design team. We offer huge potential values to the client through our innovative approach to cost and constructability benefits. We've also provided geotechnical and soil lab testing services to a number of geotechnical engineering firms. 

  • Arcadis
  • Azari Engineering
  • Bechtel
  • Berlogar Stevens & Associates
  • Cal Engineering & Geology
  • Central Valley Testing
  • Cornerstone Earth Group
  • CSG Consultants
  • Earth Systems Pacific
  • Engeo
  • ERS Corporation
  • Fugro Consultants
  • Geocon Consultants
  • GeoStructural Engineering & Construction
  • GMU Geotechnical
  • Harris & Associates
  • KC Engineers
  • Kimley-Horn
  • Kleinfelder
  • Laco Associates
  • Mark Thomas
  • Miller Pacific
  • Moore Twining Associates
  • Ninyo & Moore
  • PARIKH Consultants
  • Pavement Data Group
  • Quantum Geotechnical
  • SMG
  • Sousa Engineering
  • T. Makdissy Consulting
  • URS Corp. 

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