C-12 Earthwork & Paving Exam

Study within the comfort of your home or office. Our comprehensive multimedia home study course is the best & most affordable method to prepare for the exam.

Receive everything required to pass, trade specific textbooks, video DVDs, and audio CDs, plus one-year unlimited access to our online classroom, for one reasonable price.


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Course Outline


Our C-12 Earthwork & Paving Exam Manual covers all of the material needed to get your contractors license. Topics include general knowledge, estimating quantities and summaries of CALTRANS standards specifications. The last section of the manual covers the health and safety orders. Also, you can find sample exam questions in the back of the book.

The Excavation & Grading handbook is an essential part of the Earthwork & Paving course. The Excavation and Grading Handbook, as well as the accompanying lecture, contain vital information for passing the exam.

Don’t waste time commuting to a classroom when you can study conveniently in your home or office. Our program is a reliable, affordable, way to pass the Earthwork & Paving exam.


Expert instructors with decades of experience cover key exam concepts in greater detail. Our audio and video lectures cover math formulas, plans, specifications and explanations, general knowledge, and the health and safety orders.


To target your study, review exam questions with online flashcards. When you already know an answer, mark it as done, and you won’t see it again. Don’t know the answer? Then mark it for further study. In this way, you gain real-time feedback so you can concentrate on the subjects that you need to improve.


Check your progress as you master the study material. Our course includes two practice trade exams so you can be confident that you are ready to pass.


Other schools may offer 90-day access to online tools in the hopes of charging you extra for more time. Instead, we provide complete access to all online course materials for a full year.

Course Breakdown

Each student enrolled in our C-12 Earthwork & Paving course receives the following:

Earthwork & Paving Manual

MATH REVIEW: covers math and estimating formulas, units of measurement, basic geometry and also the architect’s scale.

GENERAL KNOWLEDGE: Manual includes a general knowledge section covering necessary trade information all students must know to pass the exam.

HEALTH AND SAFETY: Our comprehensive health and safety section familiarizes students with Cal/OSHA as well as other regulations and practices.

REVIEW QUESTIONS: Lists the most difficult questions, indexed to the relevant section of the ma

Practice Tests: Two different exams with approximately 115 questions each.

Excavation & Grading Manual

OVERVIEW: Contains an encyclopedic volume of excavating and grading knowledge. Includes photographs and diagrams illustrating how to perform the work.

GENERAL KNOWLEDGE: learn to read topographic (topo) maps, set crows feet, install water, drain, lay sewer-pipes or remove asphaltic concrete.

  • The Excavation & Grading Manual covers about every difficulty you’ll find on a job site. It also includes procedures and essential job-sequencing techniques, as well as pointers for tight situations.
  • Covers GPS – Global Positioning System – a time-saving survey and grade-control tool installed on most heavy equipment. Also includes the use of Sonar technologies for absolute precision.
  • Covers the use of a laser level and also how to cut drainage channels plus pressure-test sewer pipes.

The Excavation & Grading Handbook also Includes an interactive CD-ROM with 250 questions, related to each chapter of the manual.

Audio/Video Lectures:

Audio CDs and video DVDs summarize key points from each section of the printed manual. Recorded lectures walk students through the plans, questions, and explanations.

Earthwork & Paving Trade Exam Online Practice Tools

FLASHCARDS: Online flashcard program tracks your history and also allows you to exclude question you have already learned.

PRACTICE EXAMS: Timed, to simulate actual exam conditions. Additionally, we update all questions regularly to reflect changing trends in exam focus.

Assistance Filling out Applications

Get help filling out your contractor exam application or get a free review of your completed paperwork before submission. All students in our C12 Earthwork & Paving course can call us at 866-685-8564 for help.

Exam Content

The C-12 Earthwork & Paving Exam is broken down into four major sections:

Section 1. Planning and Estimation (12%)

  • Plans and specifications
  • Job site conditions
  • Estimating
  • Project layout
  • Materials and equipment

Section 2. Earthwork and Grade Control (32%)

  • Grade control
  • Soils and geology
  • Excavation and trenching
  • Fill and grading

Section 3. Paving (28%)

  • Roadways, driveways, and parking lots
  • Specialty paving
  • Demolition and pavement repair
  • Related paving activities
  • Electrical adjusting and testing

Section 4. Safety (16%)

  • Removal, assembly, and installation
  • Electrical adjusting and testing

Percentages are approximate

Source Material

The C-12 Earthwork & Paving Exam Source Material.

The CSLB utilizes the following publications for the creation of the earthwork & paving exam. California codebooks can be viewed online: www.bsc.ca.gov

2016 California Building Code. California Code of Regulations, Title 24. International Code Council.
PHONE: (800) 786-4452
INTERNET: www.iccsafe.org

The Asphalt Handbook: Manual Series No. 4. Asphalt Institute.
PHONE: (859) 288-4960
INTERNET: www.asphaltinstitute.org

CalDAG 2013: California Disabled Accessibility Guidebook, An Interpretive Manual, and Checklist. Michael P. Gibbens.
PHONE: (800) 870-0900
INTERNET: www.theaccessguy.com

California Manual on Uniform Traffic Control Devices. 2014. That Technical Bookstore, Inc.
PHONE: (858) 614-4323
INTERNET: www.dot.ca.gov

Excavation and Grading Handbook, Revised. Craftsman Book Company.
PHONE: (800) 829-8123
INTERNET: www.craftsman-book.com

Moving the Earth: The Workbook of Excavation. The McGraw-Hill Companies.
PHONE: (877) 833-5524
INTERNET: www.mhprofessional.com

Permeable Interlocking Concrete Pavements. ICPI Tech Specs. Interlocking Concrete Pavement Institute.
PHONE: (703) 657-6900
INTERNET: www.icpi.org

Standard Specifications, State of California Department of Transportation. 2015. CALTRANS Publications Unit.
PHONE: (916) 263-0822
INTERNET: www.caltrans-opac.ca.gov/publicat.htm

State of California General Industry & Electrical Safety Orders (Cal/OSHA) and State of California Construction & Electrical Safety Orders (Cal/OSHA). 2015. California Code of Regulations, Title 8. Mancomm.
PHONE: (877) 626-2666
INTERNET: www.mancomm.com

Publisher information is current as of 12/16

Official CSLB Description of License Classification for the C-12 Earthwork & Paving Contractor.

An earthwork and paving contractor digs – moves – and places material forming the surface of the earth, other than water, in such a manner that a ● cut ● fill ● excavation ● grade ● trench ● backfill, or tunnel (if incidental thereto) can be executed, including the use of explosives for these purposes. This classification includes the mixing – fabricating – and placing of paving and any other surfacing materials. (832.12 CCR)

Practice Quiz

The C-12 Earthwork & Paving 10 question practice exam:

These sample practice questions are similar to the ones you will encounter when taking the actual contractors exam.

If you readily answer more than seven of these questions correctly, you are in pretty good shape.
However, if you miss three or more questions, you are in danger of failing the TRADE portion of the Contractor Exam.

What is the allowable lippage between pavers?

What is the volume of a hole 120 feet long, 30 feet wide, and 6 feet deep?

How should a contractor proceed when a concrete load has arrived on a job site and the material comes out of the chute in lumps?

Blue tops pertain to:

What would be the weight of a sample of asphalt concrete that is 1 foot x 1 foot x 2 inches thick?

What causes reflective cracking?

According to disabled access regulations, what is the minimum width for public sidewalks?

How do you know you are reaching maximum compaction when rolling with a sheepsfoot roller?

How long must you wait before you put pavement markers on new asphalt that is open to traffic?

How many type 2 barricades does it take to close the shoulder and one lane of a freeway?

Law & Business Course

If this is your first contractor’s license, there are two parts to the examination process. You must pass the specific Trade exam for the trade you wish to practice, as well as the Law & Business exam which covers California Contracting Law.


Law and Business Exam

If you are applying for your original contractor’s license you must pass the LAW & BUSINESS exam plus a second exam covering the specific TRADE or CERTIFICATION you wish to practice.

If you are a contractor and adding an additional TRADE to your license you do not need to retake the LAW exam.


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Course Outline


Our Illustrated Law & Business Manual provides a simple way to review the subjects needed to pass your exam. The manual is broken down into four separate chapters, each with a glossary of terms and written in layperson’s language. The manual also includes sample forms, summaries, and checklists – everything you need to ace your law exam. There are no complicated legal codes to decipher!

Study conveniently in your home or office, without wasting time commuting to a classroom. Our program is ideal for busy professionals who need an affordable, reliable way to pass the law exam.


Audio and video lectures complement the Law & Business Manual. Expert legal instructors with decades of experience cover key exam concepts that you must know.


To target your study review exam questions with online flashcards. When you already know an answer, mark it as done, and you won’t see it again. Don’t know the answer? Then mark it for further study. In this way, you gain real-time feedback so you can concentrate on the subjects that you need to improve.


Check your progress as you master the study material. Our course includes five practice law exams so you can be confident that you are ready to pass.


Unlike other schools which only offer 90-day access, we provide you with complete access to all landscaping license online course materials for a full year.

Course Breakdown

Each student enrolled in the Law & Business course receives:

Law & Business Manual

Chapter 1: License Law
A summary of the codes and regulations that new contractors must know.

Chapter 2: Mechanics’ Lien Law
Covering mechanics’ liens, stop notices, payment bonds, preliminary notices, and lawsuits.

Chapter 3: Labor Law
Hiring, wages, benefits, workers’ compensation, employee safety, and payroll taxes.

Chapter 4: Business Management
Principles of management, business entities, and accounting for contractors.

Law & Business Practice Exams
Five different exams with approximately 115 questions each.

Audio/Video Lectures:

Audio CDs and video DVDs summarize key points from each section of the printed manual. Recorded lectures walk students through the plans, questions, and explanations.

Law & Business Online Practice Tools

FLASHCARDS: Online flashcard program tracks your history, allowing you to exclude question you have already learned.

PRACTICE EXAMS: Timed, to simulate actual exam conditions. Questions are updated weekly to reflect changing trends in exam focus based on current user feedback.

Exam Content

The Law Exam has eight major sections

Section 1. Business Organization (10% of Exam)

  • Company organization
  • Project organization

Section 2. Business Finances (10% of Exam)

  • Cash management
  • Budget and planning
  • Taxes
  • Financial reporting

Section 3. Employment Requirements (10% of Exam)

  • Employment regulations
  • Evaluation and record-keeping
  • Payroll

Section 4. Bonds, Insurance, and Liens (10% of Exam)

  •  Bonds
  • Workers’ compensation insurance
  • Liens and other remedies
  • Other insurance

Section 5. Contract Requirements and Execution (23% of Exam)

  • Bidding
  • Cost control
  • Contracts
  • Payments

Section 6. Licensing Requirements (8% of Exam)

  • Business license
  • Contractor’s license
  • Activity regulation

Section 7. Licensing Requirements (15% of Exam)

  • Training and reporting requirements
  • General safety
  • Hazardous/unknown materials

Section 8. Safety (7% of Exam)

  • Prevailing wage requirements
  • Bonding requirements
  • Insurance requirements

Percentages are approximate

Source Material

The following publications were utilized in the creation of the Law & Business exam. Publisher information for reference books and code is provided below. Other sources of reference books may be found online California codebooks can be viewed online: www.bsc.ca.gov

California Contractors License Law and Reference Book. Matthew Bender & Company, Inc.
PHONE: (800) 223-1940
INTERNET: www.lexisnexis.com

California Employer’s Guide (DE44). California Employment Development Department.
PHONE: (888) 745-3886
INTERNET: www.edd.ca.gov/FORMS

California Labor Code.
INTERNET: http://leginfo.legislature.ca.gov/faces/codes.xhtml

Contractors Guide to Business, Law and Project Management. National Association of State Contractors Licensing Agencies (NASCLA).
PHONE: (623) 587-9354
INTERNET: www.nascla.org

Publication 15 (Circular E) Employer’s Tax Guide. Internal Revenue Service.
PHONE: (800) 829-1040
INTERNET: www.irs.gov/publications/p15/index.html

Standard Specifications for Public Works Construction (Green Book). BNI Building News.
PHONE: (877) 626-2666
INTERNET: www.bnibooks.com

State of California General Industry & Electrical Safety Orders (Cal/OSHA) and State of California Construction & Electrical Safety Orders (Cal/OSHA). 2015. California Code of Regulations, Title 8. Mancomm.
PHONE: (877) 626-2666
INTERNET: www.mancomm.com

Publisher information is current as of 04/17

Practice Quiz - LAW

These 10 sample test questions are similar to the ones you will encounter while taking your California
Law & Business Exam. If you easily answer more than 7 questions correctly you are in pretty good shape.

However, if you get 3 or more practice questions wrong you are in danger of failing the LAW portion of your California Contractors Exam.

Of the following, which is a correct statement regarding a schedule of payments in an original bid?

How often must contractors’ supervisors conduct “tool box” or “tailgate” safety meetings? ​

What is the relationship between a prime contractor and a subcontractor?

How long must an employer keep records of FUTA and other federal payroll taxes?

Who is responsible for selecting materials when refilling a first-aid kit for a jobsite?

A subcontractor signs an unconditional waiver and release. This means that the____________________:

Within how many days must an “agreement to arbitrate” be returned by the participants after being mailed by the Registrar?

According to contract law, when can subcontractors and material suppliers serve a preliminary notice?

A stop notice on a public works project is used to:

Which of the following bonds guarantees both job completion and payment of subcontractors and suppliers?

C-61 Specialty Contractor

(a) Limited specialty is a specialty contractor classification limited to a field and scope of operations of specialty contracting for which an applicant is qualified other than any of the specialty contractor classifications listed and defined in this article.

(b) An applicant classified and licensed in the classification Limited Specialty shall confine activities as a contractor to that field or fields and scope of operations set forth in the application and accepted by the Registrar or to that permitted by Section 831.

(c) Upon issuance of a C-61 license, the Registrar shall endorse upon the face of the original license certificate the field and scope of operations in which the licensee has demonstrated qualifications.

(d) A specialty contractor, other than a C-61 contractor, may perform work within the field and scope of the operations of Classification C-61, provided the work is consistent with established usage and procedure in the construction industry and is related to the specialty contractor’s classification.



D-1 – Architectural Porcelain (Now under D-64 Non-specialized)
D-2 – Asbestos Fabrication (Now under C-2)
D-3 – Awnings
D-4 – Central Vacuum Systems
D-5 – Communication Equipment (Converted to C-7)
D-6 – Concrete Related Services
D-7 – Conveyors-Cranes (Now under D-21 Machinery and Pumps)
D-8 – Doors and Door Services (Now under D-28 Doors, Gates and Activating Devices)
D-9 – Drilling, Blasting and Oil Field Work
D-10 – Elevated Floors
D-11 – Fencing (Converted to C-13)
D-12 – Synthetic Products
D-13 – Fire Extinguisher Systems (Now under C-16)
D-14 – Floor Covering (Converted to C-15)
D-15 – Furnaces (Now under “General-A” or “C-20”)
D-16 – Hardware, Locks, and Safes
D-17 – Industrial Insulation (Now under C-2)
D-18 – Prison and Jail Equipment (Under relevant class)
D-19 – Land Clearing (Now under “C-12” or “General-A” if a license is required)
D-20 – Lead Burning and Fabrication (Now under D-64 Non-specialized)
D-21 – Machinery and Pumps
D-22 – Marble (Now under C-29)
D-23 – Medical Gas Systems (Now under C-36)
D-24 – Metal Products
D-25 – Mirrors and Fixed Glass (Now under C-17)
D-26 – Mobile Home Installation and Repairs (Converted to C-47)
D-27 – Movable Partitions (Now under D-34 Prefabricated Equipment)
D-28 – Doors, Gates and Activating Devices
D-29 – Paperhanging
D-30 – Pile Driving and Pressure Foundation Jacking
D-31 – Pole Installation and Maintenance
D-32 – Power Nailing and Fastening (Now under D-64 Non-specialized)
D-33 – Precast Concrete Stairs (Now under C-29)
D-34 – Prefabricated Equipment
D-35 – Pool and Spa Maintenance
D-36 – Rigging and Rig Building (Now under “General-A”)
D-37 – Safes and Vaults (Now under D-16 Hardware, Locks, and Safes)
D-38 – Sand and Water Blasting
D-39 – Scaffolding
D-40 – Service Station Equipment and Maintenance
D-41 – Siding and Decking
D-42 – Non-Electrical Sign Installation
D-43 – Soil Grouting (Now under “C-32” or “C-12” or “General-A”)
D-44 – Sprinklers (Now under D-12 Synthetic Products)
D-45 – Staff and Stone (Now under C-29)
D-46 – Steeple Jack Work (under relevant class)
D-47 – Tennis Court Surfacing (Now under “C-12” or “General-A”)
D-48 – Theater and School Equipment (Now under D-34 Prefabricated Equipment)
D-49 – Tree Service
D-50 – Suspended Ceilings
D-51 – Waterproofing and Weatherproofing (under relevant class)
D-52 – Window Coverings
D-53 – Wood Tanks
D-54 – Rockscaping (Now under “C-15” or “C-27”)
D-55 – Blasting (Now under “C-12” or “General-A”)
D-56 – Trenching Only
D-57 – Propane Gas Plants (Now under “General-A”)
D-58 – Residential Floating Docks (Now under “General-A”)
D-59 – Hydroseed Spraying
D-60 – Striping (Now under C-32)
D-61 – Gold Leaf Gilding (Now under D-64 Non-specialized)
D-62 – Air and Water Balancing
D-63 – Construction Clean-up
D-64 – Non-specialized
D-65 – Weatherization and Energy Conservation

CSLB lists the C-61 classifications in “D” subcategories for administrative tracking. Definitions for the “D” subcategories were developed by staff and approved by the Board as policy.

D-03 Awnings: An awning contractor installs, modifies or repairs aluminum, metal, vinyl or canvas awnings and patio covers. These installations can be either freestanding or attached to a structure. Patio enclosures or carports are not included in this classification.

D-04 Central Vacuum Systems: A central vacuum systems contractor installs, modifies, maintains or repairs central vacuum systems, pneumatic tube dispatching systems or any other type of pipeline which operates systems of reduced pressure for any purpose.

D-06 Concrete-Related Services: A concrete-related services contractor installs reusable steel concrete form sections or interlocking precast pavers; performs post-tensioning work, concrete sawing, breaking, curing, floor hardening treatment, coloring concrete, concrete restoration, coring work or operates a concrete pumping service; and also includes the application of gunite, but does not include the installation of reinforcing steel.

D-09 Drilling, Blasting and Oil Field Work: A drilling, blasting and oil field work contractor does core and post hole drilling, horizontal drilling (no piping) and drilling for placement of charges and performing blasting work; performs drilling for site dewatering, oil well drilling, and other oilfield-related specialty work. (DOES NOT INCLUDE WATER WELL DRILLING)

D-10 Elevated Floors: An elevated floors contractor installs wood or metal framed elevated computer flooring systems. This work does not include the construction of mezzanines.

D-12 Synthetic Products: A synthetic products contractor installs:

(a) Synthetic counter tops and wall coverings; fiberglass, plastic, vinyl and epoxy products; plastic tile board and decorative artwork; and synthetic turf;

(b) Bathtub and enamel refinishing, resin and epoxy application, and synthetic caulking and sealants;

(c) Reservoir liners, vinyl swimming pool relining, pier piling wrap, and rodent guards; and

(d) PVC piping systems for irrigation and drainage; and subsurface irrigation drip systems.

D-16 Hardware, Locks, and Safes: A hardware, locks and safes contractor installs, modifies or repairs power and/or manually activated door and window locks with related hardware, built-in safes, and vaults.

D-21 Machinery and Pumps: A machinery and pumps contractor installs, removes, modifies or repairs:

(a) Pumps; conveyors; cranes; dock levelers; various hoisting and material handling equipment; and meters;

(b) Dumbwaiters; handicap lifting and assistance equipment; automated speed-rail trolley systems for garment hanging; and

(c) Automatic car washing racks and auto body paint finishing booth equipment.

NOTE: Construction of buildings and/or roof structures for this equipment is not included.

D-24 Metal Products: A metal products contractor installs, modifies or repairs the following:

(a) Metal cabinets, lockers, modular storage structures, mail chutes, cable racks; and aluminum or vinyl storm doors and windows;

(b) Metal wall tiles; aluminum fascia covers; and metal gutters; and

(c) Aluminum studs and trusses; metal railings and turnstiles; metal prison cell accessories such as welded-to-structure cell furniture; grills; and cabinets.

D-28 Doors, Gates, and Activating Devices: A doors, gates and activating devices contractor installs, modifies or repairs all types of residential, commercial or industrial doors including overhead or sliding door assemblies. This includes but is not limited to: wood and screen doors, metal-clad doors, glass sliding/ stationary doors and frames, automatic revolving doors, hospital cubical doors and related installations; power-activated doors, gates, movable sun shades/shutters; card-activated equipment and other access control device; and any low-voltage electronic or manually operated door hardware/device.

D-29 Paperhanging: A paperhanging contractor applies all types and varieties of decorative wall coverings, except painting or paneling, including paper and vinyl goods, cork, burlap and carpet-type wall coverings.

D-30 Pile Driving/Pressure Foundation Jacking: A pile driving/pressure foundation jacking contractor provides a pile driving and/or caisson drilling or auger service. This work also includes but is not limited to the injection of concrete or mortar into foundations for stabilization purposes.

D-31 Pole Installation and Maintenance: A pole installation and maintenance contractor installs wood or precast poles to support the wiring or cable that is installed by others or installs and maintains flagpoles.

D-34 Prefabricated Equipment: A prefabricated equipment contractor performs the installation of prefabricated products/equipment, including but not limited to the following:

(a) Theater stage equipment, school classroom equipment, playground equipment, bleacher bench/seat component parts (no installation or renovation of any supporting or structural member); store fixtures, and display cases (either prefabricated or modular form); all forms and types of toilet/shower room partitions/accessories; and prefabricated closet systems.

(b) Laboratory and medical equipment, and dust-collecting systems; factory-built fireplaces and accessories (no masonry facing); major appliance installations and ventilating hoods in connection with existing fuel and energy lines which are installed by others.

(c) Bus stop shelters, prefabricated phone booths; prefabricated soundproof environmental clean rooms; panelized refrigerated walk-in boxes (not to include the work of refrigeration contractor); all types of modular office, institutional or home improvement systems including, but not limited to, all types of pre-finished and/or UL listed pre-wired wall panels.

D-35 Pool and Spa Maintenance: A pool and spa maintenance contractor installs, replaces or repairs pool motors, pumps,
filters, gas heaters and any above-ground piping in connection with pools; includes electrical switches, breakers, pool lights, diving boards, existing solar systems that heat pools, pool and spa acid baths, and applies vinyl liners to existing surfaces.

D-38 Sand and Water Blasting: A sand and water blasting contractor uses the force of compressed air in conjunction with abrasive materials or water to clean or prepare surfaces for any protective, decorative and/or functional treatment.

D-39 Scaffolding: A scaffolding contractor erects metal or wood scaffolding including temporary sidewalk sheltered construction work barricades.

D-40 Service Station Equipment and Maintenance: A service station maintenance contractor installs and/or removes underground fuel storage tanks up to 20,000 gallons which have been or are to be used for dispensing gasoline, diesel fuel, waste oil or kerosene (no chemicals). This work involves the installation and/or removal of all incidental tank-related piping, electrical work, including the installation of vapor probes in backfill areas of the tanks and any associated calibration work including, but not limited to, the testing and adjustment of leak detection and vapor recovery equipment, such as automatic tank gauges, leak line detectors, vapor recovery lines, and in-station diagnostics. This contractor also performs the installation of auto hoisting equipment, grease racks, compressors, air hoses, and other service station equipment.

NOTE: Licensees holding this classification prior to January 18, 2001, may perform all the work as described above. Licenses issued after this date may perform the “calibration” work only.

D-41 Siding and Decking: A siding and decking contractor applies or installs all types of exterior siding including wood, wood products, vinyl, aluminum and metal siding to new or existing buildings. This contractor also constructs wooden decks and related handrails. This work shall not include the construction or installation of covers or enclosures of any kind.

D-42 Non-Electrical Sign Installation: A non-electrical sign installation contractor fabricates and installs all types of nonelectrical signs including, but not limited to: post or pole-supported signs, signs attached to structures, painted wall signs, and modifications to existing signs.

D-49 Tree Service: A tree service contractor prunes trees, removes trees, limbs or stumps (including grinding) and engages in tree or limb guying.

D-50 Suspended Ceilings: A suspended ceilings contractor installs, modifies or repairs all types of suspended ceilings including, but not limited to: lay-in-grid and other types of systems involving solid, perforated or translucent ceiling panels (no electrical work).

D-52 Window Coverings: A window coverings contractor installs or applies decorative, architectural/functional
window/glass treatment or covering products including, but not limited to: all types of materials and fabrics that make up louvers, shutters, Venetian, and mini-blinds; residential or commercial draperies and screens; expanded metal window and door guards; plastic film window treatment and/or any other window treatment applied for temperature control or as a screening device.

D-53 Wood Tanks: A wood tanks contractor erects or repairs elevated wooden storage tanks and related cooling towers. (Hot tubs are not included.)

D-56 Trenching: A trenching contractor is limited to trenching only for foundations, pipelines, conduit and related trenching work.

D-59 Hydroseed Spraying: A hydroseed spraying contractor applies seeds through any liquid media to any type of surface that has been prepared or contoured by others.

D-62 Air and Water Balancing: An air and water balancing contractor installs any device and performs any work related to providing a specified flow of air in all types of existing heating and cooling systems and/or related to providing a specified flow of water in water piping systems.

D-63 Construction Cleanup: A construction cleanup contractor cleans up and/or removes from building grounds or structures any debris resultant from any construction project including, but not limited to: concrete, dirt, scrap lumber, plaster, drywall, any paint or adhesive products from windows, floors, ceramic tile and bathroom fixtures.

D-64 Non-specialized: A non-specialized contractor installs, modifies, maintains and repairs new products and/or new installations which are not defined in any section herein or defined in any license classification authorized by the Board under Chapter 9, Division 3 of the Business and Professions Code (Contractors License Law).

D-65 Weatherization and Energy Conservation: 
A weatherization and energy conservation contractor installs, removes, modifies or repairs or provides maintenance services for energy conservation products limited to the following: door and window weather stripping, caulking, water heater pipe wrap, water heater blankets, insulating gaskets for electrical outlet covers, shade screens, shutters, storm windows, tinted window film, residential water flow restricting devices installed onto existing fixtures. (DOES NOT INCLUDE INSULATION, GLAZING OR HEATING VENTILATING AND AIR-CONDITIONING WORK)

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