2019-07-09_REVISION - M2004044 (35)

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WETLAND DETERMINATION DATA FORM—Great Plains Region Project/site. Tucson South Mine City/County: Brighton/Adams Sampling Date: 07/06/2017 Applicant/Owner: Aggregate Industries State. CO Sampling Point: TM-Al-UP01 Investigator(s)- C. Ansari, J. Heule Section,Township,Range: 1, T01S, R67W Landform(hdlslope,terrace,etc.): floodplain Local relief(concave,convex, none): None Slope(%): 0.5 Subregion(LRR): Western Great Plains (G) Lat 39.990680 Long: -104.829737 Datum: WGS 84 Soil Map Unit Name: Water NWI classification. N/A Are climatic/hydrologic conditions on the site typical for this time of year? Yes X No (If no,explain in Remarks.) Are Vegetation Soil or Hydrology significantly disturbed? Are"Normal Circumstances"present? Yes X No Are Vegetation Soil or Hydrology naturally problematic? (If needed,explain any answers in Remarks) SUMMARY OF FINDINGS— Attach site map showing sampling point locations,transects, important features,etc. Hydrophytic Vegetation Present? Yes X No Is the Sampled Area Hydric Soil Present? Yes No X within a Wetland? Yes No X Wetland Hydrology Present? Yes No X Remarks:Plot established in a mapped NWI wetland located within the floodplain of the S. Platte River outside the OHWM. This location was selected based on the lower topography and the hydrophytic vegetation. VEGETATION—Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 30' ) %Cover Species? Status Number of Dominant Species 1 Populus deltoides 5 Y FAC That Are OBL, FACW,or FAC 2 (excluding FAC-). 4 (A) 3 Total Number of Dominant 4 Species Across All Strata- 6 (B) 5 =Total Cover Percent of Dominant Species Sapling/Shrub Stratum (Plot size- 15' 1 That Are OBL, FACW,or FAC 67 (A/B) 1 Tamarix chinensis 10 Y FACW 2. Salix exigua 30 Y FACW Prevalence Index worksheet: 3. Total%Cover of Multiply by- 4. OBL species x 1 = 5 FACW species x 2= 40 =Total Cover FAC species x 3= Herb Stratum (Plot size: 5' 1 FACU species x 4= 1 Euphorbia escula 20 Y NL UPL species x 5= 2. Phalaris arundinaceae 20 Y FACW Column Totals, (A) (B) 3. Bromus inermis 20 Y UPL 4, Rumex crispus 5 N FAC Prevalence Index =B/A= 5. Bromus tectorum 15 N UPL Hydrophytic Vegetation Indicators: 6. Lactuca serriola 5 N FAC — 1 -Rapid Test for Hydrophytic Vegetation 7. Cardaria draba 5 N UPL — 2-Dominance Test is>50% 8. Chenopodium album 5 N FACU — 3-Prevalence Index is<-3.0' 9. Bassia scoparia 5 N FACU — 4-Morphological Adaptations'(Provide supporting data in Remarks or on a separate sheet) 10. _ Problematic Hydrophytic Vegetation' (Explain) 100 =Total Cover Woody Vine Stratum (Plot size. 30' ) 'Indicators of hydric soil and wetland hydrology must 1. None be present, unless disturbed or problematic. 2. Hydrophytic 0 =Total Cover Vegetation %Bare Ground in Herb Stratum Present? Yes X No Remarks: US Army Corps of Engineers Great Plains-Version 2.0