CODE capped a 9.4 acre lagoon and industrial debris fill area in Hazleton, PA containing by-products of a metal refining process (i.e., beryllium, ore residue, sulfates, hydroxides, sodium, magnesium, ammonium, soluble fluorides, lead oxides, calcium oxides, dust collector filter bags, old plant equipment, spent graphite, and laboratory chemicals).

CODE initiated site operations by backfilling and regrading the existing lagoons to provide an adequate sub-base for the synthetic cap. CODE then surcharged the lagoons for a period of four months. The berm was reconstructed and the slopes of the existing berm regraded to provide a more stable area for a cap anchor system and vegetation. A new impermeable, synthetic membrane was placed over the lagoons to reduce infiltration. Once the synthetic cap was in place, CODE installed an 18 inch surface soil layer to cover the cap regrade portions of the site. CODE then seeded and fertilized the entire area. Finally, CODE installed a surface water drainage system that included trenches, swales, rend mattresses, gabions, rip-rap and 15 inch reinforced concrete pipe to collect storm water.