Question 3. Task 1: Interfaces. Choose ONE external interface and define it (description, impact analysis, control analysis) in accordance with activity C1.3.3. Question 4. Task1: Starting with the content from Question 1 (your system mission and goals) develop an RBS for the system down to at least level 3 (note that your mission statement constitutes level 0, your goals are level 1, so you require an additional two levels of detail). Task2: Focus on a portion of your RBS (you may have to expand it further, depending on which portion you have chosen) and complete the detail for at least five (5) functional requirements in the format of Figure 8-9 on page 209 of your Course text (noting that you may have more than one performance statement for each functional statement).

REQUIREMENTS PRACTICE $2 2023 ASSIGNMENT - SPECIFIC CONTEXT WALNGARAN PHASE 1 - WILD RIVER EXPERIENCE Cool Temperate Rainforest with Rare Flora/Timber- State Park A new State Park named Walngaran (Aboriginal Word for Riverbank) in the Lari district of Tasmania has recently been declared. Tasmania boasts Australia's largest reserves of cool temperate rainforest, most of it protected as part of the island's World Heritage-listed Wilderness. These cool, dark spaces support a vast diversity of flora and fauna, including species found nowhere else on earth. The state government wishes to make the area accessible due to its tourism value, on the basis of its pristine environment, historic significance and the ability to see rare and beautiful flora and fauna. As a result, the State Parks Service Tas (SPST) is planning to showcase this wilderness area by making it accessible for environmentally sensitive tourism that respects World Heritage values while allowing people of all ages and abilities to experience the beauty of the area Walngaran State Park comprises an area of approximately 900 square kilometres. It is almost rectangular in shape and has the Narawantapu River running through its centre in an East-to-West flow. An old, abandoned mining settlement is located on the Northern bank of the Narawantapu River. While these buildings are not suitable for habitation at the moment, Parks have established a cleared area that allows for a few tents and camper vans and boat trailers to access the river. The river has significant timber, mining, and industrial heritage along its shores. Major River - The Narawantapu The Narawantapu River is more pristine and intact than any other that is easily accessible in Tasmania even though there was industry on the river in the past. Some other facts about the river: There are at least 10 unnamed waterfalls between the current settlement and the sea. . In some spots the river is as deep as 45 metres next to the banks, particularly so in the area next to the current settlement. . Salt water can run below fresh water in the river as far as the settlement. Fish in the river include ocean-running trout, brook trout, eels and quinnat salmon. The river is navigable for 20 kilometres from the mouth to the settlement, and then 15 kilometres inland beyond the settlement. The river drops around 150m over its length. There has been gold and osmiridium mining and Huon Pine logging in the area in the past. To some extent the river has been saved due to inaccessibility - the river mouth is a treacherous channel to navigate and there were no roads to the area in past eras. There are two Huon Pine habitats that are relatively easy to access. There is nowhere else in the world that you can see the amount of Huon Pine that you can on the Narawantapu River and SPST expects this to be a significant drawcard for the area Significant Fauna In addition, this area is home to the only Australian population of Eastern Quolls, and a Parks Program has been established to study the population and increase awareness of their plight as a threatened species. Eastern quolls are about the size of a small domestic cat and on average weigh around one kilogram, measuring 48-58 cm including a 17-24 cm tail. They have a tapering snout, short legs, and erect ears. Environmental Threats Human activities pose the greatest threats to rainforests. The two most devastating are fire (most fires result from either deliberate or accidental burning and in the last century over seven per cent of Tasmanian rainforest has been burnt) and the inadvertent spreading of Phytophthora root rot (Phytophthora cinnamomi), especially at the edge of rainforest or along roads as people and vehicles move through the area. Figure 1 - Eastern Spotted Quoll vicinity of Walngaran State Park Climate There are two distinct cool temperate rainforest seasons experienced in Tasmania. One is cold, long and wet, and the other is a short, dry and foggy summer. During the cold, long wet season the temperature can drop below freezing (-5.C)) and during the short, drier, foggy season the temperature rarely goes above 27'C. In summer the weather is cool, and fog/drizzle supplies enough moisture to sustain the rainforest. The fog/drizzle can yield 18-30 cm (7-12 in) of precipitation each summer. The rainforests are characterised by: . receiving over 1,200 mm of rain a year, but some isolated patches occur in much drier areas; particular trees are dominant, such as myrtle, leatherwood, celery-top pine, sassafras, Huon pine, pencil pine, King Billy pine or deciduous beech - The Walngaran State Park contains perhaps the largest swathe of accessible young and maturing Huon Pine in the world; . Disturbances, such as fire, are not required for species to reproduce and in fact most disturbance allows in light-dependant, short-lived competitors. Current Infrastructure Current infrastructure is limited and includes: Bait Supply Shop. . Camping area (unimproved, gravel) Miners Huts - uninhabitable at this stage. Roadways. . Limited Walking Tracks around the settlement area/to Save the Quoll Program. Desired Infrastructure and Amenities SPST has a strategic plan based on three phases, for the sensitive development of the area: . Phase 1 - "Walngaran Wild River Experience"-improved camping grounds/amenities, and a focus on developing river infrastructure and activities. Phase 2 - "Walngaran Wilderness Walks'-development of walking trails and tracks, for a range of abilities, along the rivers and creeks.Your Focus is on Phase 1 - Walngaran Wild River Experience SPST wants to provide the following capabilities as part of the Wild River Experience. See Annex A for a draft Activities Map of the area, showing relevant features. * Currently visitors can pitch a tent in the settlement area, but, it is simply that - gravel, no amenities are provided. It is envisaged that some hard standing would be provided for pitching tents, and there would be a dedicated (non-powered) area for caravans and campervans. It is anticipated that 15 spaces would be required for each. The tented areas should be separated from each other and blend into the surrounding bush. A concept photo is shown in Figure 2 . All sites would require booking and payment and you should consider this in your design. SPST is not sure if they will handle bookings or whether this should be contracted out. In any case, all visitors will also need a Parks Pass, and these might be checked at any time by SPST staff. . There should be some form of communal area where tourists could cook their food under cover and gather at mealtimes. A basic concept is shown in Figure 3, although again it is just a concept, and you may wish to consider improvements, additions or other changes (this sheller may have to accommodate up to 50 people). . Clearly some toilet amenities would need to be provided but there is no intention to provide showers at this stage. Basic barbeque areas should be provided (approximately 10), and should be gas- operated due to fire restrictions in the area. Resupply of gas will be a consideration. . Noting that there are at least 10 unnamed waterfalls between the current settlement and the sea, SPST anticipates providing access to two of these initially, by river. One of the waterfalls is to be "unimproved' as it is possible to see the falls from the Narawantapu River (see Figure 4 ), however the second waterfall is sited inland at the junction of Raging River and Narawantapu River (see Annex A) - it would require around 150m of the track to be built, noting the need to consider the climate and vegetation. Boats and kayaks should be able to tie up near the steps which must extend below the low-water level. This will be a steep and slippery section of track and steps, so you need to consider safety. An example of what the area looks like and the concepts for the steps/tie-up point and track are shown in Figure S and Figure 6. . Tourists may bring their own boats/kayaks, but SPST wants to ensure that they provide a 'one-stop shop' facility for those who do not have their own kayak or canoe. It is envisaged that one or more forms of canoe, kayak or sit-on-top would be provided although inflatable craft are ruled out due to safety reasons. Note that powered boats may also be brought into the area. Boat safety is a big consideration so you would need to consider how that might be provided for the boating experiences. One consideration that would allow kayakers/canoeists to travel upriver and relum back to the selllement in good time is the provision of 'tows' up either the Rapid River or to the westem Huon Pine Habitat area on the Narawantapu River. Tourists can then enjoy a long, peaceful paddle downstream back to the settlement. . For those who may not wish to canoe, a powered boat trip to see the shipwreck (Raging River - see Annex A), waterfall (unimproved) and ocean mouth. There is a lot of old timber that has shifted from the river bottom to the ocean mouth which makes this a treacherous area, but of great interest to those who study the logging history of the river (see a picture of the area in Figure 7). This trip might also include photo opportunities, food and beverage options. You will need to provide some form of landing docking area near the river mouth (see concept in Figure 8 ) to enable tourists to alight and walk the remaining 800m to the coast. . The settlement area should also cater for a rostered staff of 2 SPST persons; that is, they will need some form of permanent accommodation that is weather-proof. Their communications link should also be able to provide appropriate emergency contact on a 24-hour basis. . Accommodation will also be required for the Operator of the Wild River Experience (to be tendered) and they will operate ticket sales for the barge, the hiring of kayaks/canoes/safety gear and deal with any issues associated with camping areas. They can also provide tourist information and a link (via phone) back to the nearest towns. . First aid/medical has been mentioned specifically in relation to boating activities, but more generally you need to consider how first aid and medical emergencies would be accommodated. The other main risk in the area is venomous snakes, generally during the summer months. The nearest medical support is 3.5 hours drive north. . SPST wish to provide a barge service across the river gap to enable vehicles, including campervans, cars, caravans, and Winnebago style vehicles to cross in both directions, in order to open up access to the area. Due to the river's depth (45m at the edge of the bank), it is not possible or feasible to build a bridge in this location. In order to reduce the impact on the environment, SPST envisages a cable-driven barge that would accommodate up to 3 cars or 2 cars and 1 caravan at one time. It is anticipated that the barge would take around 10 minutes to cross the river and then another 10 minutes on each side to load/unload passengers and vehicles. The ferry would not operate in darkness normally although this may be a consideration under emergency situations. . Fishing should be accommodated by boat or on the banks of the river. You may need to consider some 'landings' or some form of flat area in the settlement to accommodate this. Bail should be available from the same point as the kayaks/canoes. . Don't forget to consider how to deal with Phylophthora - Annex B contains some guidelines that might help you identify how to deal with this. . Don't forget the need to consider the risk of bushfire, and some practical ways of providing a localised first response, in your system design. Your company has been hired to provide requirements practice expertise and support for the design of the Wild River Experience. The SPST is the Business Owner; a copy of SPST's organisational chart is in Annex C. Note that a specific Project Manager (PM) has been appointed within SPTS. The PM Walngaran State Park will be working on various elements of all three stages of the Walngaran Park's development but will be the contact person for your work (they will not manage your project but represent SPST). Director Operations will be able to provide limited guidance and advice during system development but are not available as staff or members of the project team or the Operator - you may wish to seek advice from the Regional Manager North-West and various other staff members. SPST will be paying for the facility and thus want to oversee the design of the Wild River Experience.Figure 2 - Tent Platforms Concept Figure 3 - Communal Area Concept Figure 4 - Unimproved Waterfall Access ligure 5-Waterfall Anna Boimpla Figure 6-Steps from Rivet/Tie-Up Point ConceptFigure 7 - Ocean/River Mouth Figure 8 - Landing Concept ANNEX A - ACTIVITIES MAP Walngaran National Park Small Country Town 2 hours Rural City (Hospital) 3.5 hours Rural Township 1.5 hours Shipwreck Salmon Creek Huan Pine Habitat Rapid River "Save the Quail Program Settlement Cnet Huan Pines Shipwreck Ocean River Flow Direction Muas Pine Creek Unisailed Raid Fishing cal Tewritup Huon Fina Habits