Career spotlight Grade 6 Careers & CTE

Fenhollow Stormwater Technician: Inspecting Green Infrastructure

A grade 6 career spotlight on a stormwater technician who inspects rain gardens and storm drains, with the training path and cost comparison questions.

Objectives

  1. Students will describe what a stormwater technician inspects during a work week.
  2. Students will explain two education paths into stormwater work.
  3. Students will use percent and unit rate reasoning on inspection and drainage data.

Vocabulary

Stormwater
Stormwater is rain or melted snow that flows off roofs, streets, and parking lots. In most towns it goes into storm drains and flows to a stream without being treated, carrying whatever it picked up.
Rain garden
A rain garden is a shallow planted dip in the ground that catches rain running off a roof or driveway and lets it soak slowly into the soil. Its deep-rooted plants help clean the water.
Catch basin
A catch basin is a storm drain inlet with a sump underneath that traps sediment, leaves, and trash before water flows on into the storm sewer pipe. Crews periodically clean out catch basins so they do not clog or send debris downstream.

Also: outfall, illicit discharge

Teacher overview

Rain that lands on a roof or a parking lot has to go somewhere, and a stormwater technician is the person who keeps that path working. This profile follows a technician in the fictional town of Fenhollow across one work week. A misconception worth naming first is that storm drains carry water to a treatment plant. In most towns they do not. Storm drains usually empty straight into a creek, which is why anything poured into one reaches the creek untreated. Stormwater work is entered through several education paths, including on-the-job training, a two-year certificate, and a four-year engineering degree.

Answer Key

  1. Answer: Any two of these signs.
    Water flowing from a pipe on a dry day, an unusual color or smell, oil on the surface, or a hose or pipe connected to the storm line that should not be there.
  2. Answer: A storm drain empties to a creek without treatment, while a sewer drain goes to a treatment plant.
    The Overview states that storm drains usually empty straight into a creek, so anything poured into one reaches the creek untreated.
  3. Answer: 25 percent.
    85 divided by 340 equals 0.25, and 0.25 written as a percent is 25 percent.
  4. Answer: 8 rain gardens.
    $48,000 divided by $6,000 per garden equals 8 gardens.
  5. Answer: 0.75 inches per hour.
    18 inches divided by 24 hours equals 0.75 inch each hour.

Differentiation

Support

Before reading, give students a labeled sketch showing rain falling on a street, entering a grate, passing through a catch basin, and leaving an outfall pipe at a creek. Have students trace the path with a finger and name each part. For question 3, provide the fraction 85/340 already written. For question 5, ask only whether the rate is more or less than one inch per hour.

Extension

The town of Fenhollow can either build rain gardens at $6,000 each or replace one street's storm pipe with a larger pipe for $90,000. Have students write a short recommendation naming one benefit and one drawback of each choice, and state which groups in town gain from each.

ELL supports

Pre-teach "catch basin," "outfall," "rain garden," and "illicit discharge" with photographs or simple sketches and one-sentence definitions. Pair the term "illicit" with the everyday word "not allowed." Allow questions 1 and 2 to be answered with short phrases or labeled drawings.

Extensions

With adult supervision, send students outside with clipboards, staying on the sidewalk, to count and sketch the storm drains within two blocks of the school, noting whether each grate is clear or blocked. Have the class combine counts, calculate the percent of drains that were blocked, and compare that figure with the inspection percent from question 3.