OPPORTUNITY PONDS A CELLS (PCMA_008)

OPPORTUNITY PONDS A CELLS (PCMA_008) For the purposes of Long Term Monitoring, a small number of Post Compliance Monitoring Areas (PCMAs) were created in 2014. These PCMAs are comprised of a number of smaller Vegetation Monitoring (VM) areas where compliance standards have been met and agreed to by the EPA. Annual monitoring of these VM areas will continue in the following format. This PCMA area includes the A Cells portion of the surface cells of the Opportunity Ponds. The area includes the old A Cell Areas A1 Cells (VM_067), A2 Cells (VM_068), A3 Cells (VM_069), A4 Cells (VM_070), A5 Cells (VM_072), A6 Cells (VM_071), A7 Cells (VM_073), and A8 Cell (VM_074). All of these VM areas were sampled for compliance for two years (2009, 2010). Performance standards were met in both years. These VM areas were combined into one Post Compliance Monitoring Area (PCMA_008) in 2014 and these areas will be monitored as PCMA_008 into the future.

Annual Monitoring and Maintenance Data Summary Opportunity Ponds A Cells (PCMA_008) Opportunity Ponds A Cells (PCMA_008) 2014-2017 Year 2014 2015 2016 2017 Area (acres) 158.4 158.4 158.4 158.4 Current Land Use Open Open Open Open Space Space Space Space Land Owner AR AR AR AR Inspection Date 6/14/14 7/7/15 7/26/16 7/18/17 RDU 8 8 8 8 Evaluators: Warren Keammerer (WK) Holly Keammerer (HK) Cindy Hoschouer (CH) Cathy Seibert (CS) Sarah Cusser (SC) WK, HK, CH, CS WK, HK, SC HK, CH Evaluation Procedure for moving to Long Term Monitoring. WMA = Waste Management Area Procedure WMA WMA WMA WMA LRES = Upland Non-steep slope LRES Method SS = Upland Steep Slope Procedure Long Term Monitoring Category 6 6 6 6 Evaluation Area Photos Follow the Site Aerial Photo Site Aerial Photo Follows the Comments Section INSPECTION SUMMARY Vegetation Inspection 0 0 0 0 Erosion Inspection 0 0 0 0 Stormwater BMP Inspection 0 0 0 0 VEGETATION INSPECTION Overall Recommendation 0 0 0 0 Estimated Canopy Coverage 30-39% 30-39% 30-39% 30-39% Uniformity of Vegetation Cover Varies Varies Varies Varies Litter Accumulation Moderate Moderate Moderate Moderate Evidence of Reproduction Yes Yes Yes Yes Species Richness (Total Number of Species - See List) 24 37 22 26 Total Number of Acceptable Species 14 27 18 17 Ocular Estimate of Extent of Bare Areas <1-5% <1-5% <1-5% <1-5% Weed Species Present White Top (Cardaria draba) Infrequent Infrequent Infrequent Infrequent Musk Thistle (Carduus nutans) Infrequent Spotted Knapweed (Centaurea maculosa) Infrequent Infrequent Infrequent Infrequent Canada Thistle (Cirsium arvense) Tall Whitetop (Lepidium latifolium) Infrequent Infrequent Infrequent Infrequent Dalmatian Toadflax (Linaria dalmatica) Curly Dock (Rumex crispus) Vegetation Comments (See Comments Section) HK

Annual Monitoring and Maintenance Data Summary Opportunity Ponds A Cells (PCMA_008) Opportunity Ponds A Cells (PCMA_008) 2014-2017 Year 2014 2015 2016 2017 EROSION INSPECTION Average Slope (percent) 0% 0% 0% 0% Aspect Flat Flat Flat Flat Overall Recommendation 0 0 0 0 Evidence of Soil Movement None None None None Evidence of Surface Litter Movement None None None None Evidence of Coarse Fragment Movement None None None None Presence of Rills None None None None Potential Instability None None None None Presence of Gullies None None None None Erosion Comments (See Comments Section) BMP INSPECTION Overall Recommendation 0 0 0 0 Evidence of Check Dam Failure None None None None Evidence of Sediment Accumulation in Check Dams None None None None Condition of Dozer Basins None None None None Condition of Grade Control Structures None None None None Evidence of Brush Barrier Failure or Movement None None None None Condition of Mulch None None None None BMP Comments (See Comments Section) PERFORMANCE STANDARDS FOR WASTE MANAGEMENT AREAS Is acceptable, live, herbaceous vegetation cover > or equal to 30% canopy cover? (Yes or No) Is the herbaceous vegetation cover value based on an estimate (EST) or on transect (TRAN) data? Are noxious weeds widely spaced and infrequently encountered and contribute <5% of the total live vegetation cover within the area? (Yes or No). Note: This is a goal without a numeric standard. Is the bare ground less than or equal to 10% of the monitoring area? (Yes or No) Do any bare areas greater than 1000 square feet occur in the monitoring area? (Yes or No) Bare areas are defined as having <10% live vegetation cover. Erosion - BLM Score must be less than or equal to 45. Enter BLM score. Erosion - Do any actively eroding gullies deeper than 6 inches occur in the evaluation area? (Yes or No). Erosion - Do any rills deeper than 1 inch and spaced at intervals over 10 feet occur in the evaluation area? (Yes or No). Yes Yes Yes Yes EST EST EST EST Yes Yes Yes Yes Yes Yes Yes Yes No No No No 0 0 0 0 No No No No No No No No

Observed Species in Opportunity Ponds A Cells (PCMA_008) 2014-2017 Opportunity Ponds A Cells m = major species; x = other species Common Name Scientific Name YEAR 2014 2015 2016 2017 ACCEPTABLE SPECIES Western Yarrow Achillea lanulosa x Macoon s Wildrye Agrohordeum X Macounii x Crested Wheatgrass Agropyron cristatum x x x x Thickspike Wheatgrass Agropyron dasystachyum m m m m Tall Wheatgrass Agropyron elongatum x x Intermediate Wheatgrass Agropyron intermedium m x x x Western Wheatgrass Agropyron smithii x x Bluebunch Wheatgrass Agropyron spicatum x x Slender Wheatgrass Agropyron trachycaulum x x x Red Top Agrostis alba x x x x Pussytoes Antennaria rosea Rockcress Arabis sp. x x Fringed Sagewort Artemisia frigida x x x x Smooth Brome Bromus inermis x/m x/m x/m x/m Great Basin Wildrye Elymus cinereus m m m m Russian Wildrye Elymus junceus x x x x Sheep Fescue Festuca ovina x x x x Foxtail Barley Hordeum jubatum x x x Poverty Sumpweed Iva axillaris x Lewis s Flax Linum lewisii Alfalfa Medicago sativa x/m x x x Yellow Sweetclover Melilotus officinalis White Evening Star Mentzelia decapetala Yellow Evening Star Mentzelia laevicaulis x Indian Ricegrass Oryzopsis hymenoides x x x Phacelia Phacelia hastata x Big Bluegrass Poa ampla m m m m Canada Bluegrass Poa compressa Inland Bluegrass Poa interior x x x Nuttall Alkali Grass Puccinellia nuttalliana Coyote Willow Salix exigua x x x Scarlet Globemallow Sphaeralcea coccinea x Green Needlegrass Stipa viridula x x

Common Name Observed Species in Opportunity Ponds A Cells (PCMA_008) 2014-2017 UNDESIRABLE WEEDY SPECIES Opportunity Ponds A Cells m = major species; x = other species YEAR Scientific Name 2014 2015 2016 2017 Japanese Brome Bromus japonicus x Annual Brome Bromus secalinus x Cheatgrass Bromus tectorum x x x x Littleseed Falseflax Camelina microcarpa Tansy Mustard Descurainia richardsonii x Filago Filago arvensis x Prickly Lettuce Lactuca serriola x x Tumbling Hedge Mustard Sisymbrium altissimum x x Hedge Mustard Sisymbrium loeselii x x Common Dandelion Taraxacum officinale x x Salsify Tragopogon dubius x x x x NOXIOUS WEEDS White Top Cardaria draba I I I I Musk Thistle Carduus nutans I Spotted Knapweed Centaurea maculosa I I I I Kochia Kochia scoparia I I I I Tall Whitetop Lepidium latifolium I I I I I=Infrequent; F=Frequent; C=Common; D=Dominant Total Number of Acceptable Species 14 27 18 17 Total Number of Species 24 37 22 26

Annual Monitoring and Maintenance COMMENTS for Opportunity Ponds A Cells (PCMA_008) 2014-2017 YEAR 2014 2015 VEGETATION COMMENTS This area comprises the A Cells portion of the surface cells of the Opportunity Ponds. The area includes the old A Cell Areas A1 Cells (VM_067), A2 Cells (VM_068), A3 Cells (VM_069), A4 Cells (VM_070), A5 Cells (VM_072), A6 Cells (VM_071), A7 Cells (VM_073), and A8 Cell (VM_074). All of these VM areas were sampled for compliance for two years (2009, 2010). Performance standards were met in both years. These VM areas were combined into one Post Compliance Monitoring Area (PCMA_008) in 2014. In 2014, performance standards are still being met. Compliance Status: LTIM. Good vegetation development throughout most of this area. The area was fertilized in 2014. There are a few small bare spots that should be checked: in Cell 6.2 in the vicinity of N46 07 46.2 W112 52 04.6, in Cell 7.1 at N46 07 46.1 ; W112 52 03.1 and N46 07 44.8 ; W112 52 02.7 and in the southeast corner of the A8 cell. The portion of the A8 cell that was treated with 60T per acre of lime is still sparsely vegetated in 2014, but the density and cover of perennial grasses and alfalfa is increasing. Small amounts of pocket gopher activity throughout most of the cells in this area. The willows were sprayed; most have died. There are a few with living sprouts at the base. There is some spotted knapweed on the road between the A1.1 and A1.2 cells that should be sprayed in the next few years. This area comprises the A Cells portion of the surface cells of the Opportunity Ponds. The area includes the old A Cell Areas A1 Cells (VM_067), A2 Cells (VM_068), A3 Cells (VM_069), A4 Cells (VM_070), A5 Cells (VM_072), A6 Cells (VM_071), A7 Cells (VM_073), and A8 Cell (VM_074). All of these VM areas were sampled for compliance for two years (2009, 2010). Performance standards were met in both years. These VM areas were combined into one Post Compliance Monitoring Area (PCMA_008) in 2014. In 2015, performance standards are still being met. Compliance Status: LTIM. Good vegetation development throughout most of this area. The area was fertilized in 2014. There are a few small bare spots that should be checked: in Cell 6.2 in the vicinity of N46 07 46.2 W112 52 04.6, in Cell 7.1 at N46 07 46.1 ; W112 52 03.1 and N46 07 44.8 ; W112 52 02.7 and in the southeast corner of the A8 cell. The portion of the A8 cell that was treated with 60T per acre of lime is still sparsely vegetated in 2015, but the density and cover of perennial grasses and alfalfa is increasing. Small amounts of pocket gopher activity throughout most of the cells in this area. The willows have been sprayed throughout this area and are mostly dead. There are a few with living sprouts at the base. There is some spotted knapweed on the road between the A1.1 and A1.2 cells that should be sprayed in the next few years. EROSION COMMENTS No obvious signs of erosion. BLM score is essentially 0. No obvious signs of erosion. BLM score is essentially 0. BMP COMMENTS Micro pits still present. No other BMPs installed in this area. Micro pits still present. No other BMPs installed in this area. MANAGEMENT ACTIVITIES

Annual Monitoring and Maintenance COMMENTS for Opportunity Ponds A Cells (PCMA_008) 2014-2017 YEAR 2016 2017 VEGETATION COMMENTS This area comprises the A Cells portion of the surface cells of the Opportunity Ponds. The area includes the old A Cell Areas A1 Cells (VM_067), A2 Cells (VM_068), A3 Cells (VM_069), A4 Cells (VM_070), A5 Cells (VM_072), A6 Cells (VM_071), A7 Cells (VM_073), and A8 Cell (VM_074). All of these VM areas were sampled for compliance for two years (2009, 2010). Performance standards were met in both years. These VM areas were combined into one Post Compliance Monitoring Area (PCMA_008) in 2014. In 2016, performance standards are still being met. Compliance Status: LTIM. Good vegetation development throughout most of this area. The area was fertilized in 2014. There are a few small bare spots that should be checked: in Cell 6.2 in the vicinity of N46 07 46.2 W112 52 04.6, in Cell 7.1 at N46 07 46.1 ; W112 52 03.1 and N46 07 44.8 ; W112 52 02.7 and in the southeast corner of the A8 cell. The portion of the A8 cell that was treated with 60T per acre of lime is still sparsely vegetated in 2016, but the density and cover of perennial grasses and alfalfa are increasing. Small amounts of pocket gopher activity throughout most of the cells in this area. The willows have been sprayed in the past. There are still a few some living sprouts. Most of the spotted knapweed has been sprayed. The cells look good overall; most of the spotted knapweed occurs along the old roads, but the cells should be carefully checked in the next few years. Some of the roads were sprayed for control of spotted knapweed after the evaluation date in 2016. Evaluate weed status in 2017. This area comprises the A Cells portion of the surface cells of the Opportunity Ponds. The area includes the old A Cell Areas A1 Cells (VM_067), A2 Cells (VM_068), A3 Cells (VM_069), A4 Cells (VM_070), A5 Cells (VM_072), A6 Cells (VM_071), A7 Cells (VM_073), and A8 Cell (VM_074). All of these VM areas were sampled for compliance for two years (2009, 2010). Performance standards were met in both years. These VM areas were combined into one Post Compliance Monitoring Area (PCMA_008) in 2014. In 2017, performance standards are still being met. Compliance Status: LTIM. Good vegetation development throughout most of this area. The area was fertilized in 2014. There are a few small bare spots that should be checked: in Cell 6.2 in the vicinity of N46 07 46.2 W112 52 04.6, in Cell 7.1 at N46 07 46.1 ; W112 52 03.1 and N46 07 44.8 ; W112 52 02.7 and in the southeast corner of the A8 cell. The portion of the A8 cell that was treated with 60T per acre of lime is still sparsely vegetated in 2017, but the density and cover of perennial grasses and alfalfa are slowly increasing. There is some minor pocket gopher activity throughout most of this area. The willows have been sprayed in the past. There are still a few some living sprouts. Weed control efforts in the past have been successful. Weed control was conducted along the roads in 2017. There is tall whitetop on both sides of the road between cells A1.1 and A1.2 that will need control in the next few years. There is still some spotted knapweed at the end of the A1.2 cell that will need additional control. EROSION COMMENTS No obvious signs of erosion. BLM score is essentially 0. No obvious signs of erosion. BLM score is essentially 0. BMP COMMENTS Micro pits still present. No other BMPs installed in this area. Micro pits still present. No other BMPs installed in this area. MANAGEMENT ACTIVITIES

Site Aerial Photo for Opportunity Ponds A Cells (PCMA_008) 4 3 2 1 1 Photo Location Point Opportunity Ponds A Cells (PCMA_008)

Opportunity Ponds A Cells (PCMA_008) 2014-2017 PHOTO LOCATION 1 - Opportunity Ponds A Cells PHOTO LOCATION 2 - Opportunity Ponds A Cells N46 07 20.9, W112 52 34.8, looking east N46 07 31.6, W112 51 46.2, looking west June 14, 2014 June 14, 2014 July 7, 2015 July 7, 2015

Opportunity Ponds A Cells (PCMA_008) 2014-2017 PHOTO LOCATION 1 - Opportunity Ponds A Cells PHOTO LOCATION 2 - Opportunity Ponds A Cells N46 07 20.9, W112 52 34.8, looking east N46 07 31.6, W112 51 46.2, looking west July 26, 2016 July 26, 2016 July 18, 2017 July 18, 2017

Opportunity Ponds A Cells (PCMA_008) 2014-2017 PHOTO LOCATION 3 - Opportunity Ponds A Cells PHOTO LOCATION 4 - Opportunity Ponds A Cells N46 07 32.4, W112 51 45.1, looking northwest N46 07 47.2, W112 51 57.7, looking south June 14, 2014 June 14, 2014 July 7, 2015 July 7, 2015

Opportunity Ponds A Cells (PCMA_008) 2014-2017 PHOTO LOCATION 3 - Opportunity Ponds A Cells PHOTO LOCATION 4 - Opportunity Ponds A Cells N46 07 32.4, W112 51 45.1, looking northwest N46 07 47.2, W112 51 57.7, looking south July 26, 2016 July 26, 2016 July 18, 2017 July 18, 2017