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1992 North Delta Seepage Monitoring Work Plan <br /> I am submitting this work plan for the destruction of well ND-45 on the <br /> Staten Island Delta seepage monitoring well. I am requesting approval <br /> to destroy this monitoring well as follows. <br /> Excavate down around the 2 inch pvc monitoring well to the depth of 2 <br /> foot below grade, due to inaccessibility of well location with backhoe. I <br /> will next set 1 inch trim pipe down the bottom of the well and funnel <br /> neat cement at 5 to 6 gallons of water per 941b bag until concrete <br /> reaches the surface of the well. Next we will seal the well and <br /> pressurize the grout mix, attempting to force the grout out of the well. <br /> Once the inspector is satisfied with this I will remove the pressure and <br /> cut the casing off 2 foot below grade and mushroom cap the seal. Once <br /> this step is completed I will backfill the hole to surface grade. <br />