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Across 3. What do terraces, baffles, and riprap do? 7. One of the three most critical considerations in landscape construction. 8. In inches, these are the two most common sizes of rigid PVC drain pipe. 9. Shallow ditch designed to carry water through and away from a site is a drainage _______. 11. A series of low walls built across a slope to control erosion. The walls can consist of timbers, wood, masonry, or stone. 13. This is the best method of attaching drain pipes together whereby the bell-end of a pipe should face uphill when connected to another pipe. 14. Also known as drop inlet. This is a simple drain type, where water enters directly through a grate and into the drain-pipe system, without a spot for sediment collection. 18. A cage-like component extending above ground level, allowing for leaf material to be screened out while letting water flow through to drain below. 19. Item used to catch water in an area that is gradually sloped in one direction or plane. Connects to sewer and drain pipe fittings. Good for hardscape perimeters. 22. The lowest level of a pipe, at a specific point along its run, is known as the pipe _______ elevation. 24. A tool used to measure an area of random shapes on architectural or engineering drawings. 26. Large stone used to line drainage swales. Reduces erosion by slowing water flow. 28. Long, flexible netting-covered roll usually stuffed with straw, used in erosion control on slopes. 29. FG signifies ______ ______ on a landscape construction plan. 31. A sticky substance used in erosion control applications. 32. The removal of soil from a site due to the action of water and wind. 36. Comprised of a layer of biodegradeable materials sandwiched between two layers of lightweight netting. Known as an erosion ________ _______. Helpful on a slope to prevent seeds from being washed away. 37. One of the three most critical considerations in landscape construction. 39. A pit of gravel into which drainage water is directed. 41. Is it best to RETAIN water or GET RID of it all into the storm drains? 42. Known as the 360 rule, if you have 360 degrees worth of bends in your drain pipe system, you should have at least one _______.

Down 1. Mulching controls erosion by reducing the _______ of water droplets on the soil. 2. Allows water to be diverted and released away from where it's captured. Hydrostatic pressure opens spring-loaded lid of this item. 4. According to Dan, this is the minimum percentage you should slope your drain pipe.(Some books say 0.2 %) 5. Subsurface gravel trench designed to draw excess water off the surface and store it until it percolates into surrounding soil. 6. This style of drain pipe needs to be installed at a 5-10% slope. 8. One of the two primary types of construction specifications. 10. You should never use this as a swale. 12. A water capture element having a sump in the bottom of the inlet to collect debris and sediment that fall into the inlet. 15. A process whereby mulching components are mixed and sprayed on the surface of site. 16. This is used around perf pipe drainage systems to keep silt from clogging holes of pipe. 17. According to Dan, you should put a catch basin under each ________. 20. A railroad tie or timber laid across a slope to control erosion. 21. On landscape drawings, a small triangular symbol inscribed with a number denotes a _______. 23. A newer type of hydromulch providing a papier-mache-like coating. 25. In construction documents, NIC stands for ________ _______ ________. 27. Addition of new hardscape or structures may ________ the amount of water exiting a site. 28. Drain fitting sometimes used as a cleanout. 30. HP means ______ _______ as read from a landscape drawing. 33. Don't use drainage components made of this material as they can become brittle with age. 34. In perforated drain pipe, what should always face down? 35. One of the three most critical considerations in landscape construction. 38. Straw, woodchips, and shredded wood are common ________ materials used to control erosion. 40. Small valley or rut in soil resulting from erosion.