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Document No.: R8FQPForm-2012 RO (v.201 70118) Title: Section 404 Compliance Determination Inspection Report Effective Date: 01/18/2017 Page 1 of3 EPA Region 8 Field Quality Procedures Clean Water Act Section 404 Inspection Report U.S. ENVIRONMENTAL PROTECTION AGENCY--REGION 8 INSPECTOR: Monica lleimdal DATE: 09/16/22 CASE IDENTIFICATION: Jahanbin (John) Gandomcar TIME: 2:15PM3:15PM INSPECTION PURPOSE/CASE INFORMATION: . Review of restoration and/or mitigation site I AO, AOC, and/or Consent Decree Docket #: CWA-08-2011-0018 ICIS ID #: 2600004396 _. Corps ID # and Permit Authorization Date: NWO-2013-72-DEN; 05/08/15 (see 06/23/15 email) I Annual Monitoring Year: Year 6 following implementation of remedial measures after 2016 damaging high-flow event. I Other: The current owner of the property is (b) (6) had no role in the work that led to the enforcement action (administrative order). (b) (6) gave prior written permission for the inspectors to enter the site and conduct the inspection. (b) (6) contact information is (b) (6) (b) (6) . State: CO Section: 4, 33 City: Louviers County: Douglas Township: 6 South, 7 South Range: 68 West Latitude: 39.476931 Longitude: -105.000885 Name of Water Body or Adjacent Water Body and Description of Work Location: Plum Creek; work location was within the creek and on its adjacent banks. Plum Creek is a tributary to Chatfield Reservoir, an impoundment of the South Platte River. OWNER Name: Jahanbin Gandomcar (at time of violation; property was later sold). Address: 10415 Roxborough Park Road City: Littleton State: CO Zip: 80125 Phone: (b) (6) Name: OPERATOR (Contractor) __________________________________________ Address: City: State: Phone: Zip: R8FQPForm-2012 RO (v.20170118) Document No.: R8FQPFor,n-2012 RO (v.201 70118) Title: Section 404 Compliance Determination Inspection Report Effective Date: 01/18/2017 NAME Jay Colingham Monica Heimdal PERSONS PRESENT AT INSPECTION AFFILIATION USEPA Region 8, Inspector-inTraining USEPA Region 8, Lead Inspector Page 2 of3 EPA Region 8 Field Quality Procedures PHONE 303-312-6372 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 303-312-6359 DESCRIPTION OF RESTORATION/MITIGATION Description of Required Wetland Restoration and/or Mitigation: N/A Description of Required Stream Restoration and/or Mitigation: Removal of earthen dike that was constructed within and across Plum Creek to divert water to an adjacent field to the northwest. Further downstream, removal often concrete box culverts and concrete rubble used to construct a single-lane stream crossing approximately 16 feet wide and 35 feet long. Restoration of stream banks to pre-impact conditions; revegetation with seed mix specified in approved restoration plan. Construction of low water crossing per specifications in approved restoration plan. Restoration/Mitigation Start Date: November 2015 Review of As-Built Report: Restoration/Mitigation Completion Date: Spring 2017 (remedial measures to address bank erosion) % Complete: 100% As-built survey was completed 01/29/16 and submitted to EPA 02/04/16 with photos of restoration site. Visual Observations Overall, the site was robustly vegetated, with significantly greater cover than was observed by EPA inspectors in 2018, when the site was characterized as well-vegetated. Previously eroded banks that were regraded and seeded/planted in the fall of 2016 and the spring of 2017 were observed to remain in good condition and have further stabilized with increased vegetation that has grown since 2018. The low-water crossing remains in good condition following removal of boulders prior to 2018 that were improperly placed along the eastern bank. Upstream, the restored area where the earthen dike had been constructed within and across Plum Creek to divert water remains in good condition. Owner/Operator Statement: In subsequent communication following inspection, current owner indicated green fence posts marking restoration area would be removed, as well as any remaining weathered "CAUTION" tape. R8FQPForin-2012 RO (v.20170118) Document No.: R8FQPForm-2012 RO (v.20170118) Title: Section 404 Compliance Determination Inspection Report Effective Date: 01/18/2017 Review of Required Success Criteria: Page 3 of3 EPA Region 8 Field Quality Procedures Vegetative cover in the seeded and planted areas is at least 80%. All other restoration activity requirements were met prior to 2018 compliance inspection including removal of the earthen diversion dike and associated concrete barriers; removal of concrete box culverts and associated concrete rubble, and replacement with low-water crossing and small amount of riprap; regrading of stream banks and reseeding/planting. Recommended Corrective Actions: N/A See Wetland Determination Data Sheets If Data Points Are Collected During Field Inspection. N/A - Maps and Sketches ...!.. Photographs and Locations - Additional Comments and Notes - Other - Specify ATTACHMENTS ADDITONAL NOTES AND/OR FIELD SKETCH (Include information regarding environmental conditions that may have an impact on the inspection findings or the interpretation of those findings.) There were no environmental conditions present at the time of the inspection that might have an impact on the findings or interpretation of those findings. Air temperature was approximately 80 F; sky was sunny to partly cloudy; calm. Camera did not task satellites for latflong readings. Camera did record field-ofview directions. Douglas County inspected the site 09/19/18 and found that "All previously disturbed areas are completely stabilized and/or meet the re-vegetation requirements. The temporary sediment controls have been removed. The GESC Permit is closed." GESC refers to grading, erosion, and sediment control. INSPECTION REPORT DRAFTER: Monica Heimdal IflVJlIl'CH A EL i i ri DU OEG LII '.1 SUPERVISOR SIGNATURE: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Digitally signed by MICHAEL BOEGLIN Date: 2022.11.221557:43 -0700 DATE: 11/21/22 DATE: 11/22/22 R8FQPForm-2012 RO (v.20170118)