Quality Assurance Project Plan Including Sampling And Analysis Plan (Page 18 of 67) in pdf

Quality Assurance Project Plan Including Sampling And Analysis Plan Page 18

Hunters Point Shipyard Parcel F ESTCP Demonstration Plan

Appendix A: Quality Assurance Project Plan

approximate depth of one foot. The depth of the mixing can be controlled by the speed and downward

pressure of the rotovator. The rotovator attachment will also be used to mix (only) the sediments in Plot C

to a depth of one foot.

The second contractor, Compass Environmental, Inc. (CEI) [formerly Williams Environmental Services,

Inc. (WESI)], owns an injection system used traditionally for sediment solidification with cement mortar

(Figure A-4). In Jan. 2006, CEI will provide its patented rake injector and other equipment necessary to

support the treatments of Plots F and G. This equipment will be located on the shore with the injector arm

reaching out to Plots F and G. Via a slurry, AC will be injected and mixed into the upper one foot of tidal

zone sediments for Plot F. For Plot G, the sediments will be mixed using the rake injector mixers with no

application of a AC slurry. CEI will provide the data necessary to demonstrate that the requisite carbon

mass has been added to Plot F. CEI will record data such as slurry flow rate, slurry density, pump time,

and slurry volume pumped into each test plot.

The field sampling and analysis methods that will be used to assess the depth and homogeneity of the AC

application are provided in Section A.3.2 through A.3.5.

Figure A-3. “Aquamog” with Rotovator Arm

Figure A-4. CEI System with Injector Arm

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Quality Assurance Project Plan Including Sampling And Analysis Plan Page 18