Global Water Sampling Project
Letter of Introduction from San Diego
Posted by Rhian Purdy on Thursday, 14 September 19100, at 10:59 p.m.

Greetings to all from West Hills High School!

Students from West Hills High School in Santee California will be participating in gathering water from the San Diego River for our water testing project. Santee
California is located outside San Diego at 32 43’ latitude 117 9’ longitude. We have a unique program at our school called the Ranger Project. This unique program
provides students the opportunity to travel to Mission Trails Regional Park a mile from the school to do water testing, tracking, and habitat restoration work. This
project was created by Rhian Purdy and is done with the help of two of the Rangers at Mission Trails, Sue Pelley and Luanne Barrett. We have 4 classes which total
160 students which will participate in this program. Our data will be collected in two manors:

1. Traditional chemical analysis water testing kits.

2. Probware from Vernier with CBL’s. We will present both sets of data to demonstrate the human error side of testing kits.

The students in the class represent two types of students. The morning block students are typically sophomore college bound students. The afternoon block will
represent data from freshmen honor students. Both block sets are enrolled in a block class called PE/Bio. This class was created on a campus with a traditional 50
minute schedule to allow an extended time for this program and for cross-curricular work in the fields of Biology and Physical Education.

The students will be gathering water from a location in the San Diego River that is in a Regional Park downstream from a rural setting. A major golf course is located
one mile north east of our testing site as well. The Regional Park is used for recreational use and there are no known sewage or dumping sites nearby. The average
rainfall in Santee is minimal and therefore street runoff will usually not be a factor in our data although we do heavily water lawns and other types of landscaping to
minimize fuel for fires and to beautify landscapes.

You can check out our web site as well during the project to see postings and some of the locations we visit. To visit our Web site check out:

http://www.geocities.com/rhiantigger/bioblock.html We will collect data twice a week on Wednedays and have morning and afternoon data from two seperate
locations. Data collection will be from a standing pool and a running stream. The portion of the San Diego River we will be collecting data from is called Kumeay
Lake.