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400795993 19 2015-02-20T08:40:45.187-07:00 69175 PDC ENERGY INC

1775 SHERMAN STREET - STE 3000

DENVER CO 80203 Brandon Bruns 303 860-5800 Brandon Bruns EHS Supervisor 2015-02-20T08:40:45.187-07:00 2015-02-20T08:40:45.173-07:00 440856 in process Cwasko 2015-02-19T15:35:09.377-07:00 Cwasko brandon.bruns@pdce.com 0.00000 brandon.bruns@pdce.com bbruns bbruns 2015-02-20T08:40:42.813-07:00 400791362 400795993 ALLISON, RICK 2015-02-11T00:00:00-07:00 TANK BATTERY WELD SWSE 24 5N 65W 6 Y CROP LAND sunny, 60 degrees 0 0 While completing construction activities at the Maxey 2, 33, 43, 44-24, 24D facility, historical impacts were encountered in the area of a flowline. Based on field interpretations, it appears that groundwater impacts are present. Confirmation soil and groundwater samples will be collected. 322874 400791362 false 2015-02-11T00:00:00-07:00 40.378526 -104.604995 FEE 0 0 0 false <_x0032_7_approved>false S false Unknown 0 0 0 0 false false false true false 0 2015-02-12T14:11:15.327-07:00 400795993 PDC will submit a subsequent Form 27 detailing planned remediation efforts for this project. 400795993 400795993 FORM 19 SUBMITTED 400795993.pdf 400795993 400796062 TOPOGRAPHIC MAP Maxey 2, 33, 43, 44-24, 24D Figure 1.pdf 1251375 400795993 400796063 SITE MAP Maxey 2,33,43,44-24,24D Figure 2.pdf 256985 400795993 400796064 ANALYTICAL RESULTS Maxey 2, 33, 43, 44-24, 24D Analytical Tables and Reports.pdf 631272 400795993 1 SPILL 2015-02-12T00:00:00-07:00 Landowner

PDC land department left a voice message for the landowner

400795993 2 SPILL 2015-02-12T00:00:00-07:00 Weld County Roy Rudisill

email notification

400795993 1 2015-02-20T00:00:00-07:00 0 0 true true false false false false 7 false On February 11, 2015, historic impacts were discovered below the flowline at the Maxey 2, 33, 43, 44-24, 24D production facility. Approximately 20 cubic yards of impacted material were removed and transported to the Waste Management Facility in Ault, Colorado for disposal under PDC waste manifests. Soil was field screened for volatile organic compound (VOC) concentrations using a photoionization detector (PID). Four soil samples (SS01 - SS04) were collected from the sidewalls of the excavation area at approximately 5 feet below ground surface (bgs). Soil samples were submitted to Summit Scientific Laboratories in Denver, Colorado for analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX), naphthalene, and total petroleum hydrocarbons (TPH) – gasoline range organics (GRO) by USEPA Method 8260B. Samples were also submitted for analysis of TPH – diesel range organics (DRO) by USEPA Method 8015. Analytical results indicated benzene and TPH concentrations were in exceedance of COGCC Table 910-1 standards in the soil sample (SS01) collected from the east sidewall of the excavation area. Consequently, a soil sample (LD-SS01) was collected from the embankment of the adjacent Latham Ditch to confirm hydrocarbon impacts did not extend further than the immediate excavation extent. Analytical results indicated constituent concentrations were below regulatory standards. Groundwater was encountered in the excavation area at approximately 7 feet bgs. A groundwater sample (S-GW01) was collected and submitted for laboratory analysis of BTEX. Analytical results indicated benzene and total xylenes concentrations were in exceedance of COGCC Table 910-1. Soil analytical results are summarized in Table 1 and groundwater analytical results are summarized in Table 2. The excavation extent and sample locations are illustrated on Figure 2. A subsequent Form 27 outlining a remedial approach to address remaining hydrocarbon impacts in soil and groundwater will be submitted. Nunn clay loam, 0 to 1 percent slopes 7 25 1125 15 875 965 0 0 0 0 0 0 0 0 false false 0 0 true false false false false false false false true false false true 15 10 400795993 1 2015-02-20T00:00:00-07:00 false false true false Historic impacts were discovered during construction activities. The flow line was replaced and will be routinely pressure tested. 20 true false false 5 0 Thread was being aborted.