{"product_id":"california-sanitation-system-c-42-contractor-licensing-exam-prep-book-reference-package","title":"California Sanitation System (C-42) Contractor Licensing Exam Prep Book Reference Package","description":"\u003ch1 style=\"color: #d32f2f;\"\u003eCalifornia Sanitation System (C-42) Contractor Licensing Exam Prep Book Reference Package\u003c\/h1\u003e\n\n\u003cp\u003ePrepare for the California Sanitation System (C-42) contractor licensing examination with a focused book reference package covering septic systems, sewage disposal structures, sewer laterals, excavation, piping, onsite wastewater treatment, maintenance, repair, estimating, and construction safety. This package brings together technical references that can help candidates strengthen their understanding of sanitation system work while organizing their studies around the subjects covered by the California C-42 trade examination.\u003c\/p\u003e\n\n\u003cp\u003eThe California C-42 Sanitation System classification covers contractors who fabricate and install cesspools, septic tanks, storm drains, and other sewage disposal and drain structures. The classification also includes installation of cast-iron, steel, concrete, vitreous and non-vitreous pipe, along with hardware associated with these systems.\u003c\/p\u003e\n\n\u003cp\u003eBecause sanitation system work combines excavation, piping, septic systems, drainage, wastewater treatment, maintenance, and safety, C-42 exam preparation requires knowledge across several areas of underground construction. Candidates should understand how sanitation systems are planned, how site conditions influence installation, how tanks and disposal components are placed, how sewer laterals are installed and repaired, how existing systems are evaluated, and how workers are protected during excavation and related operations.\u003c\/p\u003e\n\n\u003cp\u003eThe California Sanitation System (C-42) trade examination is a closed-book examination. Reference materials cannot be used during the trade test. The books in this package are therefore intended for preparation before exam day. Candidates should use the references to understand technical concepts, installation procedures, system components, maintenance practices, and safety principles, then work toward recalling and applying that information without relying on the books.\u003c\/p\u003e\n\n\u003cp\u003eThis package can be useful for experienced sanitation-system workers as well as candidates whose background is concentrated in only part of the C-42 scope. A contractor with extensive excavation experience may need additional review of onsite wastewater treatment and septic system troubleshooting. Someone experienced with septic installation may need more preparation involving sewer laterals, piping, calculations, or Cal\/OSHA safety requirements. A structured reference package helps bring those subjects together.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat You Get\u003c\/h2\u003e\n\n\u003cdiv style=\"border: 3px solid #d32f2f; padding: 20px; margin: 25px 0; background-color: #fff7f7;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2025 California Plumbing Code, California Code of Regulations, Title 24\u003c\/strong\u003e — a California code reference supporting study of plumbing and drainage concepts that can relate to sanitation system work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA Builder’s Guide to Wells and Septic Systems\u003c\/strong\u003e — a practical reference focused on septic systems, wells, site considerations, installation concepts, and related residential construction topics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResidential Onsite Wastewater Treatment Systems: An Operation and Maintenance Service Provider Program\u003c\/strong\u003e — a technical resource supporting study of onsite wastewater treatment, system operation, inspection, maintenance, troubleshooting, and service practices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe and Excavation Contracting\u003c\/strong\u003e — a trade reference covering excavation, pipe installation, job planning, estimating, equipment, and underground construction practices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA General Industry \u0026amp; Electrical Safety Orders\u003c\/strong\u003e — a California workplace safety reference supporting study of employee protection, equipment, electrical hazards, and occupational safety requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA Construction \u0026amp; Electrical Safety Orders\u003c\/strong\u003e — a construction safety reference covering excavation hazards, trench safety, equipment, electrical safety, access, and worker protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Details\u003c\/h2\u003e\n\n\u003cp\u003eThe California Contractors State License Board divides the Sanitation System (C-42) examination into five major content areas. The percentages are approximate and provide a useful framework for organizing study time.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanning and Estimating — 27%\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis section covers planning sanitation systems and estimating sanitation system work. Candidates should be prepared to evaluate project requirements, determine materials and equipment, calculate quantities, and organize work before installation begins.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eNew Septic System Installation — 26%\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis area includes installing septic tanks, installing leach lines and seepage pits, testing and grading over septic systems, installing alternative treatment systems, and working with specialty sanitation systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSewer Lateral Installation and Repair — 10%\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eTopics include installing sewer laterals and maintaining or repairing existing sewer systems.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSeptic System Maintenance and Repair — 10%\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThis section includes troubleshooting existing septic systems, removing or repairing existing systems, and completing maintenance work.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSafety — 27%\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eSafety preparation includes employee training and safety as well as general job-site safety.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe C-42 trade examination uses a multiple-choice format with four choices for each question and one best answer. Some questions require mathematical computation, and a calculator is provided during the examination.\u003c\/p\u003e\n\n\u003cp\u003eThere is no penalty for guessing, so candidates should attempt every question. Planning and Estimating and Safety each represent approximately 27% of the examination, while New Septic System Installation represents approximately 26%. Together, these three subjects make up a substantial portion of the test, making balanced preparation across technical and safety topics especially important.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eClosed Book Test\u003c\/h2\u003e\n\n\u003cp\u003eThe California Sanitation System (C-42) trade examination is a \u003cstrong\u003eclosed-book examination\u003c\/strong\u003e. Reference materials cannot be used during the examination.\u003c\/p\u003e\n\n\u003cp\u003eThe books in this package should therefore be used to build technical understanding before test day. Candidates should become comfortable with septic system components, underground piping, excavation practices, sewer laterals, onsite wastewater treatment, maintenance, and safety without depending on the ability to search a reference during the test.\u003c\/p\u003e\n\n\u003cp\u003eA useful preparation method is to review a sanitation system and then explain the installation process from memory. For example, after studying a septic system, describe project planning, excavation, tank placement, piping, disposal components, grading, testing, and final site restoration without consulting the reference.\u003c\/p\u003e\n\n\u003cp\u003eThe same method works for maintenance and troubleshooting. Instead of memorizing one symptom and one response, study how system performance is evaluated, what conditions can contribute to failure, what components should be inspected, and how repair decisions are made.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eLicensing Steps\u003c\/h2\u003e\n\n\u003cp\u003eThe California Contractors State License Board administers contractor licensing and the C-42 Sanitation System classification. Applicants generally move through qualification, application, examination, and license-issuance requirements.\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeet the qualifying experience requirement.\u003c\/strong\u003e The qualifying individual generally needs at least four years of qualifying experience in the classification.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eSubmit the appropriate CSLB application.\u003c\/strong\u003e Applicants required to take examinations must complete the applicable contractor license examination application and provide the required experience information.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eComplete fingerprint requirements.\u003c\/strong\u003e Applicants who are required to submit fingerprints must complete the applicable background-check process according to CSLB instructions.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eComplete required examinations.\u003c\/strong\u003e Unless an examination waiver applies, the qualifying individual generally must pass the C-42 Sanitation System trade examination and the California Law and Business examination.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eComplete the examination process.\u003c\/strong\u003e Passing the required examinations is an important part of licensing, but it does not by itself create an active contractor license.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eComplete license-issuance requirements.\u003c\/strong\u003e Applicants must satisfy applicable bond, workers' compensation, asbestos examination, fee, and documentation requirements before an active contractor license can be issued.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003eLicensing requirements can vary depending on business structure, previous licensing history, the qualifying individual, and examination waiver eligibility.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eState Requirements\u003c\/h2\u003e\n\n\u003cp\u003eCalifornia generally requires at least four years of experience in the classification to qualify for the contractor examination. Qualifying experience must be at journey level or as a foreman, supervising employee, contractor, or owner-builder under applicable CSLB requirements.\u003c\/p\u003e\n\n\u003cp\u003eQualifying education, apprenticeship training, or technical instruction may receive credit toward part of the experience requirement. Practical construction experience remains an important part of qualification.\u003c\/p\u003e\n\n\u003cp\u003eApplicants who are required to take examinations generally complete both the C-42 Sanitation System trade examination and the California Law and Business examination unless an applicable waiver is available.\u003c\/p\u003e\n\n\u003cp\u003eApplicants may also be subject to fingerprint and background-check requirements during application processing. CSLB provides applicable instructions when fingerprinting is required.\u003c\/p\u003e\n\n\u003cp\u003eAn active California contractor license requires a contractor bond. The current contractor bond amount is $25,000. A separate Bond of Qualifying Individual may also be required in certain licensing arrangements.\u003c\/p\u003e\n\n\u003cp\u003eWorkers' compensation documentation is also part of the license-issuance process. Depending on whether the contractor has employees and the business circumstances involved, the applicant may need to provide workers' compensation insurance documentation, qualifying self-insurance, or an allowable exemption.\u003c\/p\u003e\n\n\u003cp\u003eAll new applicants for a California contractor license must complete the CSLB asbestos open-book examination before licensure. This requirement is separate from the C-42 trade examination. The Sanitation System trade test itself remains closed book.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eReference Books\u003c\/h2\u003e\n\n\u003cp\u003eThe following references form the foundation of this California C-42 contractor exam prep package. They support study of plumbing and drainage concepts, septic systems, onsite wastewater treatment, excavation, piping, maintenance, and California safety requirements.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2025 California Plumbing Code, California Code of Regulations, Title 24\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA California code reference that can support study of drainage systems, piping concepts, materials, connections, installation principles, and related sanitation-system topics.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eA Builder’s Guide to Wells and Septic Systems\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA practical resource for studying septic system planning, components, site considerations, installation concepts, and the relationship between onsite wastewater disposal and property conditions.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eResidential Onsite Wastewater Treatment Systems: An Operation and Maintenance Service Provider Program\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA technical resource supporting study of onsite wastewater treatment, system components, operation, inspection, maintenance, troubleshooting, and service practices.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003ePipe and Excavation Contracting\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA trade-focused reference covering excavation, pipe installation, underground construction, estimating, equipment selection, job planning, and field procedures relevant to sanitation system work.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA General Industry \u0026amp; Electrical Safety Orders\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA California safety reference supporting review of workplace hazards, equipment, electrical safety, worker protection, and occupational safety requirements.\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eCal\/OSHA Construction \u0026amp; Electrical Safety Orders\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA construction safety reference particularly useful for reviewing excavation and trench hazards, access, equipment operation, electrical hazards, personal protective equipment, and general job-site safety.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eTest Information and Study Materials\u003c\/h2\u003e\n\n\u003cp\u003eFor \u003cstrong\u003ePlanning and Estimating\u003c\/strong\u003e, candidates should review how sanitation projects are evaluated before construction begins. Study project scope, site conditions, system layout, pipe runs, excavation requirements, equipment, material quantities, labor needs, and project sequencing.\u003c\/p\u003e\n\n\u003cp\u003eSanitation systems depend heavily on site conditions. Candidates should understand that soil, grade, available space, access, existing utilities, structures, drainage, and system location can affect both installation planning and construction methods.\u003c\/p\u003e\n\n\u003cp\u003eEstimating preparation should include pipe quantities, excavation, bedding, tanks, disposal components, fittings, backfill, labor, and equipment. Practice reading measurements carefully and checking that calculated quantities are reasonable for the described project.\u003c\/p\u003e\n\n\u003cp\u003eFor \u003cstrong\u003eNew Septic System Installation\u003c\/strong\u003e, review septic tanks, inlet and outlet piping, distribution components, leach lines, seepage pits, alternative treatment systems, grading, testing, and final system protection. Understanding how the individual parts work together is more useful than memorizing isolated terminology.\u003c\/p\u003e\n\n\u003cp\u003eUse the onsite wastewater treatment reference to strengthen knowledge of system operation as well as installation. Understanding how wastewater moves through a properly functioning system can help candidates recognize why placement, distribution, soil treatment, and maintenance matter.\u003c\/p\u003e\n\n\u003cp\u003eExcavation is an important part of septic installation. Study site preparation, trenching, equipment selection, access, underground utilities, soil conditions, spoil placement, bedding, backfill, and compaction. Proper excavation affects both installation quality and worker safety.\u003c\/p\u003e\n\n\u003cp\u003eFor \u003cstrong\u003eSewer Lateral Installation and Repair\u003c\/strong\u003e, review pipe layout, grade, excavation, bedding, connections, testing, backfill, and repair considerations. Candidates should understand how an existing lateral is evaluated and how repair work may differ from a completely new installation.\u003c\/p\u003e\n\n\u003cp\u003ePipe and excavation knowledge can help candidates understand the relationship between trench conditions, pipe support, alignment, connections, and backfill. Problems in any of these areas can affect the long-term performance of the system.\u003c\/p\u003e\n\n\u003cp\u003eFor \u003cstrong\u003eSeptic System Maintenance and Repair\u003c\/strong\u003e, focus on troubleshooting. Study the symptoms of poor system performance, possible causes, inspection procedures, maintenance considerations, and how failed or damaged components may be repaired or removed.\u003c\/p\u003e\n\n\u003cp\u003eMaintenance questions may require candidates to distinguish between problems caused by the tank, piping, disposal area, loading conditions, or other parts of the system. Develop a logical process for evaluating the complete system before selecting a corrective action.\u003c\/p\u003e\n\n\u003cp\u003eThe onsite wastewater treatment reference can be particularly useful for maintenance preparation because it addresses the operation and ongoing service of residential systems rather than focusing only on new construction.\u003c\/p\u003e\n\n\u003cp\u003eFor \u003cstrong\u003eSafety\u003c\/strong\u003e, give substantial attention to excavation and trench work. Underground construction can expose workers to cave-ins, equipment movement, buried utilities, unstable soil, access hazards, water, and other changing site conditions.\u003c\/p\u003e\n\n\u003cp\u003eHeavy equipment safety is another important topic. Excavators, loaders, trucks, and compacting equipment may operate close to workers and open excavations. Study safe equipment operation, communication, work-zone organization, access, and protection of personnel on the ground.\u003c\/p\u003e\n\n\u003cp\u003eSanitation work can also expose workers to biological hazards and contaminated materials. Proper personal protective equipment, hygiene, safe handling, and work practices are important when maintaining or repairing existing wastewater systems.\u003c\/p\u003e\n\n\u003cp\u003eElectrical hazards can be present around powered equipment, pumps, temporary electrical systems, and underground utilities. The Cal\/OSHA references can help candidates strengthen their understanding of electrical and construction safety requirements.\u003c\/p\u003e\n\n\u003cp\u003eUse the California Plumbing Code during preparation to reinforce applicable piping and drainage concepts, then use the septic and wastewater references for system-specific knowledge. Pipe and Excavation Contracting can support underground construction and estimating, while the Cal\/OSHA references support safety preparation.\u003c\/p\u003e\n\n\u003cp\u003eBecause the examination is closed book, include active recall in every study session. Review a topic, close the reference, and describe the system or procedure from memory. Work through system layouts, repair scenarios, excavation sequences, and safety situations without immediately returning to the book.\u003c\/p\u003e\n\n\u003cp\u003eStudy all five examination sections consistently. Planning, new installations, repairs, maintenance, and safety are connected in actual sanitation system work, and balanced preparation can help candidates recognize how decisions in one area affect another.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow 1 Exam Prep Helps You Reach Your Goal\u003c\/h2\u003e\n\n\u003cp\u003e1 Exam Prep helps candidates organize preparation for the California Sanitation System (C-42) contractor examination around the major technical subjects associated with the trade. A focused reference package gives candidates resources for studying septic systems, onsite wastewater treatment, piping, excavation, maintenance, estimating, and safety.\u003c\/p\u003e\n\n\u003cp\u003eTrade-focused review helps candidates understand sanitation systems as complete installations. Instead of treating tanks, piping, disposal areas, excavation, and repairs as separate topics, candidates can study how these components work together to collect, convey, treat, and dispose of wastewater.\u003c\/p\u003e\n\n\u003cp\u003eReference navigation is useful during preparation even though the C-42 trade examination is closed book. Candidates can use the appropriate book to deepen their understanding of unfamiliar subjects, then practice recalling and applying the information without the reference.\u003c\/p\u003e\n\n\u003cp\u003e1 Exam Prep also supports practice-oriented preparation. C-42 examination questions may require a candidate to calculate quantities, identify an installation sequence, evaluate a septic system problem, select an appropriate repair, recognize an excavation hazard, or determine the safest response to a job-site condition.\u003c\/p\u003e\n\n\u003cp\u003eThe reference package can also help identify gaps in field experience. A contractor experienced in septic installation may need more review of maintenance and troubleshooting. A worker experienced with pipe installation may need more preparation involving wastewater treatment or estimating. Experienced sanitation contractors may still benefit from focused review of Cal\/OSHA excavation and employee safety requirements.\u003c\/p\u003e\n\n\u003cp\u003eThe goal is to support consistent preparation through organized reference study, technical review, active recall, calculations, and safety awareness. No study package can guarantee an examination result or licensing approval, but disciplined preparation can help candidates make more effective use of their study time before taking the California C-42 trade examination.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eFAQ Section\u003c\/h2\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat does the California C-42 Sanitation System classification cover?\u003c\/h2\u003e\n\u003cp\u003eThe C-42 classification covers fabrication and installation of cesspools, septic tanks, storm drains, sewage disposal structures, drain structures, associated piping, and hardware used with these systems.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the California C-42 trade examination open book?\u003c\/h2\u003e\n\u003cp\u003eNo. The California Sanitation System (C-42) trade examination is closed book. Reference materials cannot be used during the examination.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat subjects are covered on the C-42 exam?\u003c\/h2\u003e\n\u003cp\u003eThe examination covers Planning and Estimating, New Septic System Installation, Sewer Lateral Installation and Repair, Septic System Maintenance and Repair, and Safety.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat are the largest sections of the C-42 examination?\u003c\/h2\u003e\n\u003cp\u003ePlanning and Estimating and Safety each represent approximately 27% of the examination. New Septic System Installation represents approximately 26%.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-42 exam cover septic system repairs?\u003c\/h2\u003e\n\u003cp\u003eYes. Septic System Maintenance and Repair includes troubleshooting existing septic systems, repairing or removing existing systems, and system maintenance.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes the C-42 examination cover sewer laterals?\u003c\/h2\u003e\n\u003cp\u003eYes. Sewer Lateral Installation and Repair includes installation of sewer laterals and maintenance or repair of existing sewer systems.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eCan I use the books in this package during the exam?\u003c\/h2\u003e\n\u003cp\u003eNo. The C-42 trade examination is closed book. The listed references are intended for preparation before test day.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much qualifying experience is generally required?\u003c\/h2\u003e\n\u003cp\u003eCalifornia generally requires at least four years of qualifying experience in the classification. The experience must meet CSLB requirements for journey-level or other qualifying work.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDo C-42 applicants also take the California Law and Business examination?\u003c\/h2\u003e\n\u003cp\u003eApplicants who are required to take examinations generally must pass both the C-42 Sanitation System trade examination and the California Law and Business examination unless an applicable examination waiver applies.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow should I use the C-42 reference package?\u003c\/h2\u003e\n\u003cp\u003eOrganize your preparation around the five major exam areas. Use the sanitation, wastewater, excavation, piping, code, and safety references for deeper study, then practice recalling installation procedures, calculations, maintenance concepts, repair methods, and safety requirements without using the books.\u003c\/p\u003e\n\n","brand":"1 Exam Prep","offers":[{"title":"Default Title","offer_id":50622094245945,"sku":null,"price":645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1789\/0861\/files\/CABOOKS-SANITATIONSYSTEMS_C-42.jpg?v=1791405041","url":"https:\/\/1examprep.com\/products\/california-sanitation-system-c-42-contractor-licensing-exam-prep-book-reference-package","provider":"1 Exam Prep","version":"1.0","type":"link"}