Scope of Services

Task 1.0: Site Visit

Task 1.1: Work Plan

The first task will be to develop a detailed plan for the site visit. The plan must include the following, vehicle used, equipment list, safety checklist, lodging plans, and directions to site from NAU campus.

Task 1.2: Sampling Plan

A detailed plan for the soil collection shall be done by the team to ensure the team collects an adequate sample.

Task 1.3: Research Codes and Regulations

Various codes and regulations related to project deliverables will be read through and noted.

Task 1.4: Survey Site

The locations and elevations of important points across the site such as property corners, building corners, vegetation, and a variety of infrastructure will be collected and stored. The survey data will be used in order to generate topographic maps.

Task 1.5: Collect Soil Sample

Multiple soil samples will be collected during the site visit from different locations of the parking lot. The samples will be used to complete ASTM standard test methods including but not limited to Particle Soil Distribution and Atterberg Limits test.

Task 1.6: Locate Native Vegetation

Saguaro Cactuses and Ironwood trees along with other native vegetation in the area shall be located. This can be done during surveying and can be identified on the data collector.

Task 2.0: Hydrologic Analysis

Task 2.1: Process Survey Data

After performing a survey of the site, the points that were collected will be inserted into AutoCAD. This software will process the survey data and generate a topographic map.

Task 2.2: Perform Watershed Delineation

Using the topographic map that was generated from the survey of the site, the watershed in which the site is located will be delineated. Flow paths within the watershed will be located to determine the areas that water naturally runs in the event of a storm.

Task 2.3: Determine Time of Concentration

Rainfall data for the area will be collected using the NOAA Atlas 14 precipitation frequency estimator to determine the precipitation depth and intensity of the area for various recurrence interval storms. The time of concentration and the volume of runoff coming from the watershed in its pre-development conditions for these design storms will then be calculated using the ADOT Rational Method Tool.

Task 2.4: Calculate Runoff Coefficient

The runoff coefficient of the watershed will be determined by analyzing the conditions of the watershed. The runoff coefficient will be determined by following the guidelines given in Section 2.2.5 of the Arizona Department of Transportation Hydrology Manual.

Task 2.5: Determine Natural Runoff

The volume of runoff from the site in its pre-development conditions will be determined by first using the NOAA Atlas precipitation frequency estimator to determine the precipitation depth and intensity of the area. This data will be inputted into the ADOT Rational Method Tool.

Task 3.0: Geotechnical Analysis

Task 3.1: ASTM D6913 Particle Soil Distribution Test

In order to perform the necessary soil test the team will need to get access to the soils lab. Once the team has access they can start task 3.2 and 3.3.

Task 3.2: ASTM D4318 - 17e1 Atterberg Limits Test

The gradation of the soil found from this test can be used to determine many items including, groundwater drainage, compaction, compressibility and shear strength.

Task 3.3: ASTM D4959 - 16 Moisture Content test

The test performed from the Atterberg limits will determine the Liquid limit, Plastic limit and the plasticity index of the soil. These properties of the soil found along with the Particle Soil Distribution data will be used to classify the soil.

Task 4.0: Hydraulic Analysis

Task 4.1: Analyze Existing Culvert Designs

Using the runoff and flow data in the area determine if the current culvert designs have the inlet and outlet capacity to serve the flow demand.

Task 4.2: Analyze Existing Natural Streams

The natural streams within the vicinity of the site will be located and analyzed to determine their capacity. This will provide an understanding of the flow paths of the site and how they operate in various storm events.

Task 5.0: Parking Lot Design

Task 5.1: Parking Lot Design (paved)

Develop plans for a paved parking lot. The plan must include the initial cost along with any maintenance costs. The cost will depend on the material used for the road along with how much parking area is needed to be paved.

Task 5.1.1 Pavement Cross Section

The team will provide a cross sectional view of the layers to clearly show the geologic conditions of the site. The different soil types and layers will be noted.

Task 5.1.2: Geometric Design

In order to maximize spacing and increase the number of parking lots a design will be chosen. The design of the lot will also take into account stormwater management for the paved design. The increase of impervious materials will lead to an increase in storm water runoff.

Task 5.1.3: Curbing and Barriers

Proper curbing or barriers for parking spots to keep cars from pulling too far forward will be provided in the plans. Barriers may be used for the van and bus parking to ensure that the vehicles can not damage surrounding buildings or vegetation.

Task 5.1.4: Striping

To clearly identify parking spaces, cross walks, and lanes striping will be provided in the construction plans. The striping for parking spaces will be sprayed for the paved parking lot design.

Task 5.1.5: Signs

Proper signs will need to be provided to identify handicap parking spaces, one way roads, cross walks, and speed bumps. This is to provide information to drivers to keep the parking lot safe for pedestrians.

Task 5.1.6: Hydraulic Design

After the paved parking areas are determined the runoff in the area and flow through any channels can be determined with the new amount of impervious surfaces.

Task 5.2: Parking Lot Design (unpaved)

Task 5.2.1: Geotechnical Cross Section

The soil layers below the parking areas shall have cross section drawings that show the different soil layers underneath.

Task 5.2.2: Geometric Design

The parking pullout for the camp ground shall be designed to have a clear line of sight for entering and exiting, along with enough shoulder width to unload without disturbing the through lane.

Task 5.2.3: Curbing and Barrier

Barriers may be provided on the sides of the roadways to block cars from pedestrians. Curbing for each space will be provided in the plans to set the boundaries of the parking space.

Task 5.2.4: Striping

Proper striping should be provided for the parking spaces. Having striping painted on unpaved surfaces would wash out quickly and would require frequent upkeep. For this reason spaces can be divided by ropes or wooden planks anchored into the ground.

Task 5.2.5: Signs

Signs for handicap parking spaces, speed bumps, one way roads, and crosswalks will be provided in the plans to ensure pedestrian safety.

Task 6.0: Construction Plans

Task 6.1: Construction Plans (Paved)

This task includes the final design drawings and construction plans for the paved parking lot. This will include a final cost along with a serviceability plan for future years.

Task 6.2: Construction Plans (Unpaved)

The construction plans for the unpaved parking lot design includes the final design drawings and construction plans. This will include a final cost along with a serviceability plan for future years. The client will be using the unpaved construction plans rather than the paved construction plans because asphalt does not fit into their budget.

Task 7.0: Impact Analysis

The team will look at the societal, economical, and the environmental impacts of the design project.

Task 8.0: Deliverables

Task 8.1: 30% Submittal

Includes a 30% design report, presentation, and construction plans. By this point task 1.0 will be completed and tasks 2.0 and 3.0 will have been started.

Task 8.2: 60% Submittal

Includes a 60% design report, presentation, and construction plans. By this point in the project task 3.0 geotechnical analysis and task 4.0 hydraulic analysis will have all been completed. The parking lot design, impact analysis, and post hydrologic and hydraulic analysis should have already been started.

Task 8.3 90% Submittal

Includes a 90% design report, website, construction plans, and draft of final report. All tasks should be completed by this point and the project should be complete beside final revisions.

Task 8.4: Final Submittal

After the 90 percent revisions to the project have been made the final report, construction plans, final presentation, and a final website will be submitted to the client.

Task 9.0 Project Management

Task 9.1: Meetings

This task includes meetings with the team, clients, grading instructor, and the technical advisor. Staying on schedule will help ensure the project is completed on time.

Task 9.2: Resource Management

In order to make sure the team is working efficiently resource management will be in charge of assigning tasks based on individual team members ability.

Task 9.3: Schedule Management

Schedule management is to make sure that the project is on schedule to be completed by the end of the Spring semester.


The following work will not be done by the team due to time constraints of the project.

Entrance and Exit Road Modifications

The team will only focus on parking lot design due to the time constraint of the project. The team will not develop plans on widening the entrance and exit roads.

Public meetings

The team will not hold any public meetings to obtain Pima county residents feedback on the design project.