Disclosed are novel cap layer compositions comprising: (a) an organic adsorption ingredient; (b)a non-organic silica carrier ingredient; and (c) an organic polymer delivery ingredient, wherein the cap layer composition is made by blending ingredients (a) through (c) in an integrated blending and delivery apparatus, the cap layer composition for use in an area in need of remediation.

Disclosed is a novel blending and delivery apparatus comprising: (a) a housing; (b) a first input port configured to receive an organic adsorption ingredient; (c) a second input port configured to receive an organic polymer delivery ingredient; (d) an intake chute configured to receive a non-organic silica carrier ingredient; (e) an auger driveshaft; (f) an auger coupled to the auger driveshaft; (g) a motor coupled to the auger driveshaft; and (h) a discharge opening; wherein the motor rotates the auger to blend the organic adsorption ingredient, the organic polymer delivery ingredient, and the non-organic silica carrier ingredient to form a capping composition layer mixture output via the discharge opening, where the capping composition layer mixture used to make a capping composition layer.

Disclosed is a novel blending and delivery apparatus comprising: (a) a housing; (b) a first input port configured to receive an organic adsorption ingredient; (c) a second input port configured to receive an organic polymer delivery ingredient; (d) an intake chute configured to receive a non-organic silica carrier ingredient; (e) an auger driveshaft; (f) an auger coupled to the auger driveshaft; (g) a motor coupled to the auger driveshaft; and (h) a discharge opening; wherein the motor rotates the auger to blend the organic adsorption ingredient, the organic polymer delivery ingredient, and the non-organic silica carrier ingredient to form a capping composition layer mixture output via the discharge opening, where the capping composition layer mixture used to make a capping composition layer.

Disclosed are novel solutions in which a preexisting sediment capping system is integrated with improvements such as a cap ingredient processing and delivery apparatus, cap processing method and novel compositional cap product, whereby a hazardous site is remediated by delivering at least one novel cap composition layer over the contaminated subaqueous waterway or terrestrial substrate floor. One embodiment includes a powdered activated carbon (PAC) based cap layer produced by the system and methodology disclosed, the cap layer ingredients comprising predetermined ratio amounts of dry PAC and dry powdered 2-Hydroxypropyl guar gum (HGG) used as a safe and effective delivery ingredient, blended in a cap processing and delivering apparatus with a dewatered sand semi-slurry, the processed resulting capping composition being delivered in a manner such that a novel PAC cap layer is provided to a cap placement area in need of remediation.

Disclosed are novel solutions in which a preexisting sediment capping system is integrated with improvements such as a cap ingredient processing and delivery apparatus, cap processing method and novel compositional cap product, whereby a hazardous site is remediated by delivering at least one novel cap composition layer over the contaminated subaqueous waterway or terrestrial substrate floor. One embodiment includes a powdered activated carbon (PAC) based cap layer produced by the system and methodology disclosed, the cap layer ingredients comprising predetermined ratio amounts of dry PAC and dry powdered 2-Hydroxypropyl guar gum (HGG) used as a safe and effective delivery ingredient, blended in a cap processing and delivering apparatus with a dewatered sand semi-slurry, the processed resulting capping composition being delivered in a manner such that a novel PAC cap layer is provided to a cap placement area in need of remediation.

Disclosed is a novel blending and delivery apparatus comprising: (a) a housing; (b) a first input port configured to receive an organic adsorption ingredient; (c) a second input port configured to receive an organic polymer delivery ingredient; (d) an intake chute configured to receive a non-organic silica carrier ingredient; (e) an auger driveshaft; (f) an auger coupled to the auger driveshaft; (g) a motor coupled to the auger driveshaft; and (h) a discharge opening; wherein the motor rotates the auger to blend the organic adsorption ingredient, the organic polymer delivery ingredient, and the non-organic silica carrier ingredient to form a capping composition layer mixture output via the discharge opening, where the capping composition layer mixture used to make a capping composition layer.

Disclosed is a novel blending and delivery apparatus comprising: (a) a housing; (b) a first input port configured to receive an organic adsorption ingredient; (c) a second input port configured to receive an organic polymer delivery ingredient; (d) an intake chute configured to receive a non-organic silica carrier ingredient; (e) an auger driveshaft; (f) an auger coupled to the auger driveshaft; (g) a motor coupled to the auger driveshaft; and (h) a discharge opening; wherein the motor rotates the auger to blend the organic adsorption ingredient, the organic polymer delivery ingredient, and the non-organic silica carrier ingredient to form a capping composition layer mixture output via the discharge opening, where the capping composition layer mixture used to make a capping composition layer.

A waterborne facility on a body of water includes a primary spoolable pipe and a pump. The end of the primary spoolable pipe may be guided from the waterborne facility to a location proximate to a selected site. The pump may be used to discharge a flowable material through the primary spoolable pipe. The waterborne facility may include a ready-mix concrete preparation system. However, the waterborne facility may deliver any flowable material to a selected site, which may be a land surface, underground, on a water surface, or underwater. Illustrative flowable materials include seawater, grout, cement, and sediment/mud.

A waterborne facility on a body of water includes a primary spoolable pipe and a pump. The end of the primary spoolable pipe may be guided from the waterborne facility to a location proximate to a selected site. The pump may be used to discharge a flowable material through the primary spoolable pipe. The waterborne facility may include a ready-mix concrete preparation system. However, the waterborne facility may deliver any flowable material to a selected site, which may be a land surface, underground, on a water surface, or underwater. Illustrative flowable materials include seawater, grout, cement, and sediment/mud.

Disclosed are novel solutions in which a preexisting sediment capping system is integrated with improvements such as a cap ingredient processing and delivery apparatus, cap processing method and novel compositional cap product, whereby a hazardous site is remediated by delivering at least one novel cap composition layer over the contaminated subaqueous waterway or terrestrial substrate floor. One embodiment includes a powdered activated carbon (PAC) based cap layer produced by the system and methodology disclosed, the cap layer ingredients comprising predetermined ratio amounts of dry PAC and dry powdered 2-Hydroxypropyl guar gum (HGG) used as a safe and effective delivery ingredient, blended in a cap processing and delivering apparatus with a dewatered sand semi-slurry, the processed resulting capping composition being delivered in a manner such that a novel PAC cap layer is provided to a cap placement area in need of remediation.