This document describes a proposal for designing green stormwater infrastructure and a sewage system for a haunted amusement park. It includes an introduction outlining the project goals, sketches of the proposed layout and systems, a Gantt chart scheduling the work, a bill of materials listing required parts and costs, and a discussion reflecting on balancing environmental and budgetary considerations. The systems were designed to gravity feed sewage to an underground filtration facility and use layered gravel to filter stormwater runoff before it enters a nearby lake.

1. Terror Lake: A Horror Amusement Park
Section 080, Group 07
Group members
Talaial Alina, tba28@drexel.edu
Gabriel LeVee, gbl29@drexel.edu
Joey Massa, ​jvm54@drexel.edu
Abstract
The proposal to build the Terror Lake haunted amusement park excluded the construction
of Green Stormwater Infrastructure (GSI), and also failed to include any bathrooms or sewage
system. The purpose of this project is to design those missing components so that they could
fulfill the requirements of this park’s ordinance. Indeed, the project designed the GSI and sewage
system, and a budget for their construction. Sewage filtration and gravel­style stormwater
filtration techniques were employed in designing these systems. The project helped successfully
create green alternatives to the county ordinance, and aspirations that future building projects can
include our designs to fuel a cleaner world.
Introduction
This project involved designing of a Green Stormwater Infrastructure (GSI) and sewer
system for a haunted amusement park​ ​which borders both a forest and a lake. This required that
team members extensively research fluid dynamics and filtration methods to better cultivate the
group’s ability to design such a system. The first step involved creating the proposed layout for
the park. Then, the project involved designing a sewer system which connected all three
available bathrooms to a single underground sewage filtration facility via gravity fed pipes which
also led from the filtration plant to the lake carrying clean, filtered water. Finally, the project
entailed the design of a runoff filtration system that borders the lake to prevent park pollution
from seeping into the lake. This filtration system is the Green Stormwater Infrastructure because
it cleans the stormwater before it reenters the environment.

2. Sketches
The overview pipeline layout sketch for the sewer system depicts all bathroom pipelines
connecting into one major pipe that feeds into the underground facility while one pipe, filled
with clean, filtered water, exits the facility. This not only helps cut down on the overall pipe
required to build the sewer, but it also allows for easier maintenance if the system malfunctioned.
Furthermore, building one overall pipeline easily makes it gravity­fed because the entire system
can be tilted linearly, from the furthest bathroom down to the underground filtration facility. The
underground filtration facility is the most important element because it allows this sewer system
to be self­sustaining, and it can help an entrepreneurial fertilizer business effort in the future
employ the filtered sewage product. This facility also ensures that the sewer system follows
along with the green theme set by the GSI requirement.
Furthermore, laying the three varied sizes of gravel to cover the depth of the lake border
approximately 35ft deep ensures that only clean water enters into the lake and properly creates
the filtration layer for stormwater runoff, as depicted in the sketch. Indeed, gradually increasing
the fineness of gravel closer to the lake can help create one of the simplest and most effective
natural filtration systems.

3. Figure 1: Sketch of Haunted Amusement Park

4.
Figure 2: Sketch of Haunted Amusement Park Sewage System and Green Stormwater
System (GSI)

5. Gantt chart
The project Gantt Chart contains six major tasks to complete: gathering materials,
installing sewage filtration station, installing PVC pipes and foundation for sewer, installing a
filtration layer, installing bathroom systems, and creating a final report. The reasoning for those
times are as follows. First, the materials, listed in the bill of materials, will be gathered from June
1st until September 1st. Gathering these materials will take approximately three months due to
the large quantities of materials and expenses required for the project. Next, the sewage filtration
station will be installed from approximately September 2nd until November 12th. This station
will be installed before the pipelines because it is the most crucial part of the sewer system and
will take the most work to complete. The PVC pipes and foundation for the sewer will be
installed in the subsequent time from November 13th until December 20th. Simultaneously, the
filtration layer will be installed from November 15th until January 7th. These will be installed at
overlapping times because they will require similar areas of digging and work, and serve similar
integrated purposes. Next, bathroom systems will be constructed from December 20th until
January 18th. These will be installed after the sewer pipes because bathrooms require a
functioning sewer prior to operation. Finally, a final report of all work, expenses, overall
efficiency, and results will be developed from January 19th until February 16th, marking the
completion of the actual project​.
Figure 3: Haunted Amusement Park Gantt Chart
Bill of Materials/Budget
Parts one through eight in the first table are all used in conjunction with one another to
create one large water filter. The concrete, part two, will be used to build the facility itself [10].
For this reason, it is necessary to spend around $10,000 to ensure the proper size. Part one, the
two pumps, will be used to move water from the restrooms to the filtration facility [4]. Parts four

6. through seven are all used as the physical filter. It starts with the largest particles, the pebbles
that filter out the largest debris [1]. The water will then be sifted through the layers of coarse and
fine silex as well as the activated carbon [11] [7] [8].
The second table shows parts one through five of the sewage pipe system. Part five will
be used as the main pipe connecting all of the various facilities in the park [17]. Part one will be
used to help the drainage of the park [13]. Part one is a perforated PVC pipe that will lie under
the surface of the park. It will be surrounded with parts two through four to ensure that water can
enter the pipe [12] [16]. In theory, any excess runoff should flow into the perforated pipes which
will guide it efficiently to the lake.
The final table lays out the items used to reinforce the banks of the lake. Black Willow
and Silver Maple trees have strong root systems that will help hold the soil in place [3] [14], but
there is a large bank to the right of the park thus required many trees. Overall, trees alone will
cost under $215,000. In addition to the trees, Big Bluestem, part three [2], is a wetland grass that
not only supports the banks against erosion, but also helps to purify the water before it enters the
lake. Parts four, five, and six are three different types of gravel [15] [6] [11]. When properly
layered under the soil before the bank of the lake, this tree will help filter runoff before it enters
the lake and protect against erosion. Preparing a sustainable and green bank for the lake will cost
around $375,000 and will be the most expensive of the three segments in the bill of materials.
Figure 4: Haunted Amusement Park Sewage System Bill of Materials

7. Figure 5: Haunted Amusement Park Sewage System Budget
Figure 5.1: Haunted Amusement Park Sewage System Budget (continued)

8.
Discussion
Completing the haunted amusement park and the haunted amusement park sewage
system designs involved numerous conceptual sketches of the haunted amusement park and its
sewage system, development of a Green Stormwater Infrastructure (GSI) that harnesses both the
local environment and environmentally sound materials, a sewage system comprised of several
parts, creation of a Gantt Chart that illustrated the progression of the project, a bill of materials
stating the material required for the project, and the entire budget for the green stormwater
infrastructure detailing labor and material costs for the project.
First, designing the sewage system of the haunted amusement park mandated delicately
balancing the interests and desires of the county government with the strict, but important,
construction requirements of the sewage system. This entailed concealing the park’s sewage
system near the trees prevalent throughout the park while also recognizing the sewage system’s
pollution on the local environment. The materials listed for the sewage system confronted this
pollution concern through becoming a part of a filtration layer comprised of gravel, soil, and
other materials, and a filtration system with an activated carbon filter.
The project also envisioned that this sewage system would continuously flow water, rain
or sewage water, throughout the structure. The filtration layer would collect runoff water from
the rain and minimize the spread of harmful pollutants into the lake and elsewhere during intense
rain periods, while the activated carbon layer in the sewage filtration station would absorb
sewage.
After planning these project goals through outlines and conceptual sketches, the next
phase of the project involved determining how the project would be implemented. In this phase,
a Gantt Chart illustrated sequential completion of the project over a period of eight months. This
data also helped determine when a project staff member was needed, and the amount of material
necessary to complete a specific Gantt Chart task on time. However, additional days should be
added to each task in a Gantt Chart during an actual execution of this project to account for
mishandled materials, delinquent employees, and weather changes.
After developing a Gantt Chart, a Bill of Materials was produced detailing the
comprehensive material costs of implementing the sewage system of the amusement park. This
item explored the locations to purchase the required materials while accounting for their
individual costs. In reality, the project contractor should clearly communicate with their client
and discuss the potential flaws of the clients’s hopes for the project, including their desire to

9. build with certain materials. As a result, the project will realistically realize the clients's
aspirations.
The final stage of the planning process for the haunted amusement park involves creating
an extensive budget that details the project labor and material costs. In this budget, labor costs
were calculated through determining the weekly salaries of each of the 169 employees required
for the project and multiplying each of these values by 37 weeks, the number of weeks in the
eight month period required to complete the project. To determine the total labor cost, this labor
cost was added to each member’s travel expenses which were individually estimated to be
$100/day for lodging, $10/day for airfare/train, $48.5/day for gas, and $1850 for meals and other
transportation options. Interestingly, labor costs composed 50% of the entire budget, highlighting
their significance in the project, and perhaps the importance of contractually obligating the
contractor to hire temporary workers to complete a project on schedule if current workers leave a
project. This may be where the 5% reserve funds in the budget allow emergency hirings of these
temporary workers, or for missing materials.
Beyond planning the procedures to construct the amusement park sewage system, the
actual sewage system should be adaptable to local ecosystem changes or increases in park
visitors. This involves coating the sewage filtration related materials with substances that can
protect against weather changes or building adequate space around sewage lines to easily expand
them in the future if needed, respectively. Similarly, the sewage filtration station should be built
with regards to the potential for future expansion. In this station, a hired maintenance crew
should also periodically cleanse the activated carbon filter and the other filtering materials to
resupply the station with new materials and maintain its efficiency. Furthermore, a specialized
team should periodically examine the the filtration layer of the green stormwater system to
identify its continued effectiveness and replace its materials with more affordable and effective
ones if the layer is breaking down. This team should also inspect the nearby lake to ensure that
the park’s sewage system is properly filtering sewage, and not releasing deadly pollutants into
the environment. Therefore, the sewage system project’s consideration of current and potential
human and environmental concerns defines the park as an innovator in employing green
technology to allow humans to coexist with the environment while also ensuring the park’s
viability decades into the future.
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