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Sep 11, 2018

Bay History, Stockton Harbor tainted flats. Test results from 9/14/16 samples

A succession of chemical and fertilizer factories were built on Stockton Harbor's Kidder Point from the early 20th century to the 1970s.  The waste products from at least two onsite processes: sulfuric acid  and aluminum sulfate manufacturing, were dumped along the Stockton Harbor shore.
Earlier pH testing of site: 1984 * 1990

 09/14/16 Sample Collection Results . Numbers refer to locations on Map 1.

1. Aluminum, 10,600 mg/kg.      Sulfur: 25,400 mg/kg.  pH 5.40

2. Aluminum: 3,545 mg/kg.
Sulfur: 289,7000 mg/kg. pH 3.50.

3.Aluminum: 3,023 mg/kg.
Sulfur 50,400 mg/kg.  pH: 3.12.

4. Aluminum: 1,927 mg/kg.
   Sulfur: 235,500 mg/kg.  pH: 3.40

5. Aluminum: 2,980 mg/kg. Sulfur:150,500 g/kg.  pH: 3.20.

6. Aluminum:  2,805 mg/kg. Sulfur 163,800 mg/kg.  pH:  5.08

7. Aluminum:  9,506 mg/kg.  Sulfur 11,500 mg/kg.  pH:  6.65

8. Aluminum: 11,400 mg/kg. Sulfur 17,500 mg/kg.  pH:  6.31

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