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Wednesday, November 11, 2009
CLEANWAY Passes LLDA Upstream/Downstream Water Sampling
November 10, 2009, Laguna Lake Development Authority released the Result of Laboratory Analysis on the water samples collected by LLDA's investigation team from the nearby Labuyo creek during the site inspection undertaken last October 15, 2009.
WATER MONITORING RESULTS
Sampling Date: October 15, 2009
Results are from the LLDA
| ANALYSES | STANDARD | Upstream | Downstream |
| Glass Electrode, pH | 6.0 - 9.0 | 7.39 | 7.51 |
| Temperature, °C | - | 28 | 24 |
| Total Dissolved Solids, TDS | - | 192 | 190 |
| Azide Modification (BOD5), ppm | 50.0 | 3 | 4 |
| Closed Reflux (COD), ppm | 100.0 | 9 | 13 |
| Gravimetry (TSS), ppm | 70.0 | 22 | 48 |
| Oil and Grease, ppm | 5.0 | <0.50 | <0.50 |
| Alkalinity as CaCO3, ppm | - | 77.6 | 79.6 |
| Chromium (IV), ppm | 0.1 | <0.001 | <0.001 |
| Calcium Hardness as CaCO3, ppm | - | 77.6 | 79.6 |
| Total Hardness as CaCO3, ppm | - | 71.6 | 74.6 |
| Chloride as Cl, ppm | 350 | 5.9 | 6.4 |
| Turbidity, NTU | - | 39 | 55 |
| Conductivity | - | 210 | 225 |
| Ammonia, ppm | - | 0.07 | 0.10 |
| Nitrates, ppm | 10 | 6.2 | 5.7 |
| Inorganic Phosphates, ppm | 0.4 | 0.26 | 0.31 |
| Total Phosphorus, ppm | - | 0.11 | 0.12 |
| Total Nitrogen, ppm | - | <1.0 | <1.0 |
| Lead, ppm | 0.3 | <0.1 | <0.1 |
| Copper, ppm | 0.05 | <0.05 | <0.05 |
| Cadmium, ppm | 0.05 | <0.003 | <0.003 |
| Iron, ppm | - | 1.1 | 1.5 |
| Nickel, ppm | - | <0.01 | <0.01 |
| Zinc, ppm | - | 0.06 | <0.05 |