//Heading displayed on the quiz page pageHeading="Module 3 Self-Test" //Questions qa = new Array() qa[0] = new Question("Even if they reach groundwater under the leaching field, most bacterial and protozoan pathogens are removed by filtration within about 10 feet of the system as the groundwater moves through the sandy aquifer.", "true", "false", 0) qa[1] = new Question("In sandy soils such as are found on most of Cape Cod, it is reasonable to assume that when viruses from the septic system become entrained in the groundwater they may move as far as _______ before becoming inactivated.", "50 feet", "lOO feet", "200 feet", "1000 feet", 2) qa[2] = new Question("Which of the following statements about nitrogen is not true:", "Nitrate is the primary form of nitrogen found in groundwater below septic systems.", "Nitrogen is not appreciably transformed or removed as it travels in the groundwater.", "Horizontal setbacks to sensitive receptors such as wells are based on the ability of groundwater to remove nitrogen.", "The primary method for reducing nitrogen levels in sensitive receptors such as wells is dilution.", 2) qa[3] = new Question("Which of the following statements about phosphorus removal below a leaching field is not true:", "Soluble phosphate forms complexes with iron in the soil to form insoluble iron phosphate.", "Most phosphorus removal occurs in the saturated zone of the groundwater.", "Complexation of iron and phosphorus to form insoluble iron phosphates requires aerobic conditions.", "Complexation of iron and phosphorus to form insoluble iron phosphates is a reversible reaction; under anaerobic conditions phosphate can become soluble again.", "Complexation of iron and phosphorus to form insoluble iron phosphates is a saturable reaction that can only be expected to remove a finite amount of phosphorus.", 1) qa[4] = new Question("Horizontal setbacks between the leaching facility and various structures and/or sensitive receptors are based on concerns over, choose all that apply:", "movement of noxious gasses into cellars or other habitable spaces", "removal of nutrients such as phosphorus and nitrogen", "structural stability of foundations", "removal of pathogens", "reduction of synthetic organic chemicals", "a, b, and c", "a, c and d", 6) qa[5] = new Question("If a leaching facility will be installed within 5 feet of a property line, a survey of the property is required.", "true", "false", 0) qa[6] = new Question("it is permissible for a leaching facility to be constructed less than 10 feet from a leaching facility on an adjoining lot.", "true", "false", 1) qa[7] = new Question("The primary reason for the 10 foot setback between the leaching field and the property line is to gain assurance that a property owner can construct and maintain the septic system on property that is under his own control.", "true", "false", 0) qa[8] = new Question("Which of the following is true, choose all that apply: Horizontal setback distances between septic tanks or leaching fields and foundations", "are based on the fact that septic effluent can travel horizontally when its downward path is blocked by impermeable layers such as clay or bedrock.", "are based on the expectation that horizontally traveling effluent could enter enclosed spaces through cracks or fissure or open sump drains.", "are based on the fact that gasses produced in the septic tank could diffuse into nearby living spaces.", "when inadequate, can be compensated for by use of impermeable barriers placed between the septic system and the foundation.", "all of the above", 4) qa[9] = new Question("You receive a plan with inadequate horizontal separation distance between the septic tank or leaching field and the water supply line. All of the following are strategies to protect the integrity of the water supply. Which would you prioritize as 1st in the mitigation strategy.", "Allow variances to other setbacks, such as the property line, so that components of the septic system can be moved away from the water line.", "Move the water line.", "Encase the water supply line in an impermeable sleeve, such as 4-inch diameter PVC pipe.", "Redesign the plan so that the elevation of the invert to the leaching field is at least 18 inches below the water supply line.", 3) qa[10] = new Question("You receive a plan with inadequate horizontal separation distance between the septic tank or leaching field and the water supply line. All of the following are strategies to protect the integrity of the water supply. Which would you prioritize as 2nd in the mitigation strategy.", "Allow variances to other setbacks, such as the property line, so that components of the septic system can be moved away from the water line.", "Move the water line.", "Encase the water supply line in an impermeable sleeve, such as 4-inch diameter PVC pipe.", "Redesign the plan so that the elevation of the invert to the leaching field is at least 18 inches below the water supply line.", 0) qa[11] = new Question("You receive a plan with inadequate horizontal separation distance between the septic tank or leaching field and the water supply line. All of the following are strategies to protect the integrity of the water supply. Which would you prioritize as 3rd in the mitigation strategy.", "Allow variances to other setbacks, such as the property line, so that components of the septic system can be moved away from the water line.", "Move the water line.", "Encase the water supply line in an impermeable sleeve, such as 4-inch diameter PVC pipe.", "Redesign the plan so that the elevation of the invert to the leaching field is at least 18 inches below the water supply line.", 1) qa[12] = new Question("Horizontal setbacks between components of the septic system and surface waters are based on concern about direct human exposure to pathogens which can occur through swimming, incidental ingestion, or ingestion of shellfish from these waters.", "true", "false", 0) qa[13] = new Question("Granting a 25 % reduction in leaching field size that provides for the required setback between a leaching field and a private well is preferable to a variance allowing a reduction in this setback distance.", "true", "false", 0) qa[14] = new Question("An on-site well which supplies water to a restaurant or motel is considered to be a public water supply.", "true", "false", 0) qa[15] = new Question("A small public supply well usually has a minimum Zone I or protective radius of 100 feet. In repair situations, can any component of the septic system be installed in this area?", "yes", "no", 1) qa[16] = new Question("To evaluate whether slope requirements have been met, note the elevation of the peastone at the top of the leaching field, measure out from it 15 feet in all directions and determine if the elevation of the land surface in this area is below the elevation of the peastone. If the land surface is lower than this elevation, slope requirements have been met.", "true", "false", 1) qa[17] = new Question("Where slope requirements cannot be met, engineers often build the leaching field within an impervious retaining wail. There should be a minimum 10-foot distance between the edge of the leaching field and the retaining wail.", "true", "false", 0) qa[18] = new Question("The primary concern with the installation of septic systems in an A Flood Zones is:", "destabilization of the physical structure of the land surface", "physical disruption or unearthing of the septic system by wave action during storm events", "potential flooding of the septic system during storm events with associated spillage of the contents of the system and possible human exposure to pathogens", "protecting the integrity of natural landforms which minimize the impact of storms and flooding", 2) qa[19] = new Question("For new construction, a septic tank can be installed in a National Flood Insurance Program designated Velocity Zone.", "true", "false", 1) qa[20] = new Question("A home in existence as of March 31, 1995 is partially destroyed by a hurricane in September 1999. The home is located in a V14 Velocity Zone. In October, 1999 you, as a Board of Health member, are confronted with the decision as to what can be rebuilt on the site. The owner proposes to rebuild the house with no increase in design flow and elevate the bottom of the house above elevation 14 ,i.e. the house will be reconstructed on pilings; a fiberglass septic tank will be bolted to the bottom of the house above elevation 14. In order to obtain required separation to groundwater, a mounded leaching field will be constructed; there is no area on the lot outside the V zone where a leaching field can be constructed. Should you approve this project?", "Yes, the project complies with Title 5 requirements.", "No, the project does not comply with Title 5 requirements.", 0) qa[21] = new Question("Use the same hurricane destruction scenario as above. In this case, the owner proposes to rebuild the house on pilings above elevation 14. However, since he is going to significant expense to rebuild, he would like to add a bedroom, turning a 2-bedroom cottage into a 3 bedroom year round house. He proposes to install a composting toilet inside the house and construct a leaching field, the bottom of which will be 4 feet above groundwater, for graywater. Should you approve this project?", "Yes, the project complies with Title S requirements.", "No, the project does not comply with Title 5 requirements.", 1)