Facility Audit: Deer Park, TX - Clean Harbors

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4. Summary Total of three (3) landfills onsite. South Landfill (Closed) Size Permitted Capacity Approximately 20 Acres 1,500,00 CY Date Material Last Deposited July 1993 Materials Deposited Ash, filter cake, hazardous and non-hazardous waste North Landfill (Active) Size Permitted Capacity Date material Last Deposited Materials Being Deposited Approximately 20 Acres 815,00 CY Current Ash, filter cake, RCRA empty drums, construction debris, hazardous and nonhazardous waste. East Landfill (Future) Size Approximately Permitted Capacity 45 Acres 658,00 CY Non-Commercial Waste Water Treatment Operations A. Recirculated Process Water Water utilized in the gas quenching operation is treated on-site in the water treatment plant prior to reuse in quench operations. Quench water is pumped to a primary neutralization tank for partial neutralization with a lime slurry. Final pH adjustment is accomplished in a secondary neutralization tank with caustic. The quench water then flows into two (2) clarifiers where metal hydroxides settle out as sludge. Treated water flows from the clarifiers to the cooling towers to be cooled and then recycled back to the gas quenching system for reuse. 30
B. Non-Recirculated Process Water All process water is eventually discharged (through NPDES permitted outfall) to Tucker's Bayou, which flows adjacent (northwest flow) to the facility and empties into the Houston Ship Channel. Every minute, approximately eight percent (8%) by volume blow-down water is taken from the cooling tower basin for heavy metals treatment. In addition, this 8% volume is replaced with "fresh" water, thus a mass balancing of water volume is accomplished with solids and metals loading kept to a minimum. This water is treated through pH adjustment (metal hydroxide precipitation) and the addition of a flocculent/coagulant to enhance metal precipitation through lamella separators. This water is then polished (pH adjustment if required) and piped to the check tank. Upon receipt of lab analysis showing that water meets NPDES and TCEQ Wastewater permit requirements, the water is discharged into Tucker’s Bayou. C. <strong>Facility</strong> Outfalls OUTFALL USEPA NPDES TCEQ WASTEWATER PERMIT 001 Process Water Process Water 002 Stormwater Stormwater 003 Stormwater 1 Stormwater 101 - Internal 2 1 - Stormwater; for undeveloped areas and capped landfills. 2 - Internal; outfall is regulated by TCEQ and serves as a point to sample/monitor water from organics unit (PACT - powder activated carbon treatment) prior to mixing in Outfall 001 check tanks. Should the facility find an exceedance in the internal outfall, this water can be recirculated back to the water treatment facility, herby preventing mixing in the check tanks. D. Process Water Residuals The resultant sludge generated from the flocculation and precipitation of metal hydroxides is pumped to a set of horizontal filter presses. Most of the remaining water is separated from the sludge producing a filter cake. This filter cake is stabilized and tested for all LDR treatment standards and placed in the on-site landfill. E. Storm Water Management Storm water is collected, inspected for potential contamination, and either transferred to one of three storm water storage tanks or incinerated. Under routine operations, this stormwater is treated in the water treatment facility using a PACT (activated carbon) system to remove any trace organics that may be present. The treated water is then discharged via our permitted NPDES Outfall 001. In the event of a large rainfall, the site may declare an emergency and 31
Page 1 and 2: Facility Audit: Deer Park, TX 1
Page 3 and 4: 1.0 General Company Information Int
Page 5 and 6: 2.0 Facility Information Facility O
Page 7 and 8: Facility Site Plan 5
Page 9 and 10: Security Access into the facility i
Page 11 and 12: 3.0 Operating Licenses and Permits
Page 13 and 14: Groundwater Inspector TSCA Authoriz
Page 15 and 16: A. Process Flow Diagrams 13
Page 18 and 19: B. Waste Feeds Waste port assignmen
Page 23 and 24: TABLE II SECONDARY CONTAINMENT DATA
Page 25: outine inspections as well as emerg
Page 28 and 29: B. Direct Burn Areas Clean Harbors
Page 31: Landfill The Deer Park landfills ar
Page 35 and 36: Analytical Laboratory The Laborator
Page 37 and 38: E. Laboratory Audits The Deer Park
Page 39 and 40: Figure 2. STRATIAGRAPHY AND UNIT DE
Page 41 and 42: Through implementation of the Inter
Page 43: For more detail concerning Clean Ha

Facility Audit: Deer Park, TX - Clean Harbors

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