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Illinois Septic Installers Exam with accurate solutions

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Illinois Septic Installers Exam with accurate solutions

Institution
Illinois Private Sewage Contractor
Course
Illinois Private Sewage Contractor

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Illinois Septic Installers Exam with accurate solutions ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Public Sewer Connection - correct answer✔✔Private residence must connect if w/in 300'
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or for any commercial bldg. w/in 300' that has flows less than 1500 gpd. Commercial w/
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flows = to or greater than 1500 gpd must connect if sewer is w/in 1000'.
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Unless physical barrier, ordinance, or cannot be done w/ individual line (4" line)-then PSD
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system is OK. ||\\|//|| ||\\|//||




Acceptable Pipe Materials - correct answer✔✔Vitrified clay, ductile iron, or plastic. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Anything after the tank or from distribution box has to be vitrified clay or plastic. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Schedule 40 or Greater - correct answer✔✔under roads, driveways, or parking areas ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Gravity Slope - correct answer✔✔Diameter: 4" pipe + min. slope of 12" per 100'
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Building sewers in excess of 50' should have what? - correct answer✔✔A C/O @ least ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




every 50' from building to tank, distribution box, or ATU
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Creviced Limestone Formation - correct answer✔✔SS system cannot be installed where ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




bottom of system is less than 4' from top of limestone ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




If limestone is known to be present a soil test must be done @ least 4' deeper than where
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the bottom of the trench will be
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How far away can quick disconnect be? - correct answer✔✔no more than 50' away from
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the device & w/in sight of
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,Experimental Use Permits - correct answer✔✔min. of 10 experimental systems installed b4 ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




unconditional approval granted. Permit valid for 2 yrs & evaluated @ end of 2 yrs.
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2 options for garbage grinders - correct answer✔✔1. solids retention tank btwn WW source
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& septic tk. for kitchen waste only. Needs to be 50% of the size of the designed septic tank
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w/ a min. of 500 gals. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




2. A septic tank receiving all flows sized as 50% of the septic tank size + septic tank size.
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i.e., septic tk = 1500 gals. /2 = 750 + 1500 = 2250 (would need 2500 gal tk)
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How long should a homeowner keep maint. records for their system? - correct ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




answer✔✔the life of the system ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




When should the 1st maintenance of a septic tank after installation be completed for a ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




residence? - correct answer✔✔Prior to or within 3 yrs. After initial inspection it can be ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




done once every 5 yrs. Can be done by everyone + homeowner ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




If sludge layer /suspended solids are greater than 33% . . . - correct answer✔✔Must pump
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tank and perform maintenance ||\\|//|| ||\\|//|| ||\\|//||




When should a septic system be evaluated initially after installation for a non-residential ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




bldg? - correct answer✔✔prior to or w/in 3 yrs. After that it should be done @ least every
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3 yrs. ||\\|//|| ||\\|//||




Owner cannot do. has to be engineer, env. health practitioner, member of dept, HD, or ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




septic contractor ||\\|//||




Aerobic Treatment Unit Evaluations - correct answer✔✔1 every 6 mos @ least (same ppl) ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




+ HOMEOWNER as long as they follow manufacturer's requirements & proper
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maintenance

, What is the maint. schedule for SFs & WSPs w/ surface discharges? - correct answer✔✔@
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least 1 per yr. + H.O. if rules r followed. Pumped when solids & scum greater than 33%
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Can a H.O. install & maintain a septic system on his/her property? - correct answer✔✔Yes
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Who can perform the excavation for a septic system? - correct answer✔✔A licensed
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installer (employee while supervised) or the property owner. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What is the min. size tank for flows UP TO 500 gpd? - correct answer✔✔750 gals.
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If flows are greater than 500 gpd, how do you size the tank? - correct answer✔✔Tank size
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should be = to @ least 1.5x the estimated sewage flow ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




How do you size a tank(s) for flows greater than 1350 gpd? - correct answer✔✔U must use
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




multiple tks. in a series or multiple compartment tks. where the 1st tank or the 1st comp.
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in a multicomp. tk. is 1/2-2/3 of the total required capacity. of the tank(s)
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How do you size the tank for a raised filter bed for a residence? - correct answer✔✔It has
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to be an NSF 40 batch treatment system. The aeration tank has to be 2x the daily flow
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How do you size the tank for a RFB for a commercial bldg? - correct answer✔✔The
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




aeration tk. has to be 3x the daily flow. ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Multiple tanks in a series connected @ btm for flow equalization can be used ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




How are RFB sidewalls sized? - correct answer✔✔3:1 ratio
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




How are distribution lines for RFBs? - correct answer✔✔4" perforated pipe on 15" centers
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||

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Illinois Private Sewage Contractor
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Illinois Private Sewage Contractor

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