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| | | Name : Damian ClarkeSubject : Environmental ScienceUnit 1Centre: St. Mary’s CollegeCentre Number : 160073Candidate Number : 1600730296 |

[Title : Human Impact on the Water Quality of the Santa Cruz/San Juan River] | |

Table of Contents

| Page Number | Site Reports | | Site 1:: Reservoir Road, Santa Cruz, Trinidad | 2 | Site 2:Akal Trace, La Pastora, Santa Cruz, Trinidad | 3 | Site 3:Cantaro Extension Rd, Santa Cruz, Trinidad | 4 | Site 4:Mt Hololo Rd Santa Cruz, Trinidad | 5 | Lab Reports | | Lab 1:Dissolved Oxygen and Biological Oxygen Demand | 7 | Lab 2:Total Suspended Solids | 10 | Lab 3:Total Dissolved Solids | 12 | Lab 4:Macro Invertebrate Fauna | 14 | Final Report | | Problem Statement, Objectives | 17 | Methods of Data Collection | 18 | Literature Review | 19 | Presentation and Analysis of Data | 20 | Discussion of Findings | 22 | Conclusions | 23 | Recommendations | 23 | Bibliography | 24 |

Site Number: 1
Date: 28/11/13
Site: Reservoir Road, Santa Cruz, Trinidad (Control site – Furthest Upstream)
Objective(s): To investigate a section of the river with little or no human impact to use as a control site.
Activities: The class arrived at site 1 around 9:15am. Observations of the riverbed, the water itself, human influences and both flora and fauna were made. Also the temperature, depth, width, turbidity and rate of flow of the water were measured. Water samples for later analysis of total suspended solids, total dissolved solids and biological oxygen demand were collected. Upstream of the site a sample of water was collected to perform a dissolved oxygen test which was done at the site as seen in the dissolved oxygen lab report. After all the...

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