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Home My WebLink About950689.tiff ,S t1 s11 a ,I� r `J iv r .4t soil survey ofvit t, yfi„x i,, !1r #t. , 0, r ! 1 „•�, rr� ,! for '*A��3{Q,FI + Weld Coun' Colo"r`rado ;5 ty ,wy . Southern Part ' x`„'. „=,,r.,, ,, ` f „ y ., ,� , tiIf1�T ✓_t A i,:? �rJYi AA�I Z! ! 1,1&',114\411.43,' iJ� h h f t �arr o- 4. n.: I 1t ! l '1 11yyttj` �1 SAc,`"4.4.);'' '',..-;:i',4. `4.I� ! r.' . RN j,�4 t /..,'('-,it;) X11 Ir''t v�ya�"Y� Affil n t �� 'c r4 u 1 !'f °'dgy,� Zit, JY > n14vUlN If Y yy'y��Yy �1rW MA ,...),,:i.,. .,,,;,. • fir s • )� .. )� S E°k t, �}r x�¢�WAI 4�6 ( r•h.•,:, '1 iM ,� iii;11'4:44 i. f r, ' r�, t d � ! ! e i t 1 j1 r$�Sy�^ vli 13 YI{! tra�11 { f ��4 �5y/+1 � t ( l iti. " C '1 i�r_ -,,,,,,•,..;:.:71;,,,=,-./,:,..,,i.: I r, M� .l t�1• p�Z rk ! i t ; t.;. A, . Yfyl M. r� r4y'''r t - 9 rii e r ,y f 1�, +f �1,' f ,rr 1 ,�. f _ )et l!, P '. r r ti t1 1 pr � }'F�� + nr r ^ ��. United States Department of Agriculture Soil Conservation Service in cooperotion with Colorado Agricultural Experiment Station 1;?cil i i WELD COUNTY, COLORADO, SOUTHERN PART 43 Iivustoulc and w11tBIfa Phnro Oa rantcv. I.IvasLooIc watering Mg. 'I'ho grans selected should meet the seasonal require- facilities also are utilized by various wildlife species. The month of livestock. IL cwt be seeded Into a clean, thin cropland areas provide favorable habitat for pheasant and sorghum stubble, or it can be drilled into a firm prepared mourning duvu, MunY nuugnmu 'mochas van by nttraulvd mootMod. Mutating early in spring has proven most success- by establishing areas for nesting and escape cover. The underlying shale is the most limiting feature of Windbreaks and environmental plantings of trees and this soil. Neither septic tank absorption fields nor sewage shrubs conunntonly grown in the area are generally well lagoons function properly. In places the underlying shale suited to this soil. Cultivation to control competing has high shrink-swell potential. Environmental and beau- vegetation should be continued for as many years as tification plantings of trees and shrubs can be difficult to possible following planting. Trees that are best suited and establish. Capability subclass IVe irrigated, Vle nonir- have good survival are Rocky Mountain juniper, eastern rigated; Loamy Plains range site. redeedar, ponderosa pine, Siberian elm, Russian-olive, and 66—Ulm clay loam, 11 to 3 percent slopes. This is a hackberry. The shrubs best suited are skunkbush sumac, deep, well drained soil on plains at elevations of 5,075 to lilac, Siberian peashrub, and American plum. 5,200 feet. It formed in alluvial and eolian sediments from Wildlife is an important secondary use of this soil. The shale. Included in mapping are small areas of soils that cropland areas provide favorable habitat for ring-necked have shale between 40 and 60 inches. Also included are pheasant and mooning dove. Many nongame species can small areas of soils where the surface layer and subsoil be attracted by establishing areas for nesting and escape have been recharged with lime from irrigation. cover. For pheasants, undisturbed nesting cover is essen- Typically the surface layer of this Ulm soil is brown tial and should be included in plans for habitat develop- clay loam about 5 inches thick. The subsoil is brown and mesa, especially in areas of intensive agriculture. Range- pale brown clay about 14 inches thick. The substratum to land wildlife, for example, the pronghorn antelope, can be a depth of 60 inches is clay and clay loam. attracted by developing livestock watering facilities, Permeability is slow. Available water capacity is high. managing livestock grazing, and reseeding where needed. The effective rooting depth is (30 inches or more. Surface This soil has poor potential for urban and recreational runoff is medium, and the erosion hazard is low. development. Slow permeability and high shrink swell In irrigated areas this soil is suited to all crops coin- cause problems in dwelling and road construction. Capa- monly grown in LI?e area, including corn, sugar beets, bility subclass Ile irrigated, IVe nonirrigated; Clayey beans, alfalfa, and small grain. An example of a suitable Plains range site. cropping system is 3 to 4 years of alfalfa followed by 07—Ilimn clay loam. 3 hi 5 percent slopes. This is a corn, corn for silage, sugar beets, small grain, or beans. deep, well drained soil on plains at elevations of 5,075 to Land leveling, ditch lining, anti installing pipelines are 5,200 feet. It formed in alluvial and eolian sediments from needed for proper water applications. shale. Included in mapping are small areas of soils that All methods of irrigation are suitable, but furrow ir- have shale between depths of 40 and 60 inches. Also in- rigation is the most. common. Barnyard manure and coin- chided are small areas of soils where the surface layer mercial fertilizer are needed for top yields. and subsoil have been recharged with lime from irriga- In nonirrigated areas this soil is suited to winter wheat, Lion. barley, and sorghum. Most of the acreage is planted to Typically the surface of this Ulm soil is brown clay winter wheat. The predicted average yield is 28 bushels loam about 5 inches trick. The subsoil is brown and pale per acre. The soil is summer fallowed in alternate years brown clay about 12 inches thick. The substratum to a es to allow moisture accumulation. Generally precipitation is depth of GoPermeab inc luis isslow.clay and lcclay y water capacity is high.too low for beneficial use of fertilizer. Stubble mulch farming, striperopping, and minimum til- 'The effective rooting depth is 60 inches or more. Surface lage are needed to control soil blowing and water erosion. runoff is medium, and the erosion hazard is moderate. Terracing also may be needed to control water erosion. In irrigated areas this soil is suited to the crops corn- The potential native vegetation is dominated by monly grown in the area. Perennial grasses and alfalfa or western wheatgrass and blue grama. 13u ffalograss is also close grown crops should be grown at least 50 percent of present. Potential production ranges from 1,000 pools the time. Contour ditches and corrugations can be used in per acre in favorable years to (300 pounds in unfavorable irrigating close grown crops and pasture. Furrows, eon- years. As range condition deteriorates, a blue grama-buf- Lour furrows, and cross slope furrows are suitable for row falograss sod forms. Undesirable weeds and annuals in- crops. Sprinkler irrigation is also desirable. Keeping til- vade the site as range condition becomes poorer. (age to a minimum and utilizing crop residue help to con- Management of vegetation on this soil should be based Ind erosion. Maintaining fertility is important. Crops on taking half and leaving half of the total annual produc- respond to applications of phosphorus and nitrogen. Lion. Range pitting can reduce runoff. Seeding is desirable In nonirrigated areas this soil is suited to winter wheat, if the range is in poor condition. Western wheatgrass, barley, and sorghum. Most of the acreage is planted to blue grama, sideoats grama, buffalograss, pubescent winter wheat. The predicted average yield is 28 bushels wheatgrass, and crested wheatgrass are suitable for seed- per acre. The soil is summer fallowed in alternate years 950689 44 SOIL SURVEY , allow moisture accumulation. Generally precipitation is Permeability is rapid. Available water capacity is low. too low to make beneficial use of fertilizer. The effective rooting depth is 60 inches or more. Surface Stubble mulch farming, striperopping, and minimum til- runoff is medium, and the erosion hazard is moderate. .ge are needed to control soil blowing and water erosion. The potential native vegetation is dominated by little .erracing also may be needed to control water erosion. bluestem, sideoats grama, sand reedgrass, blue grams, The potential native vegetation is dominated by hairy grama, switchgrass, and needleandthread. Potential esters wheatgrass and blue grama. Buffalograss is also production ranges from 700 pounds per acre in favorable resent. Potential production ranges from 1,000 pounds years to 200 pounds in unfavorable years. As range condi- per acre in favorable years to 600 pounds in unfavorable tion deteriorates, the tall and mid grasses decrease, blue years. As range condition deteriorates, a blue grama-buf- grama and hairy grama increase, and forage production dograss sod forms. Undesirable weeds and annuals in- drops. ade the site as range condition becomes poorer. Management of vegetation should be based on taking Management of vegetation on this soil should be based half or less of the total annual production. Deferred graz- n taking half and leaving half of the total annual produc- ing is practical in improving range condition. Seeding and on. Range pitting can reduce runoff. Seeding is desirable mechanical treatment are impractical. if the range is in poor condition. Western wheatgrass, Windbreaks and environmental plantings generally are blue grama, sideoats grama, buffalograss, pubescent not suited to these soils. Onsite investigation is needed to 'heatgrass, and crested wheatgrass are suitable for seed- determine if plantings are feasible. Wildlife populations are limited because the necessary ig. The grass selected should meet the seasonal require- habitat elements are lacking. Because most of the acreage ments of livestock. It can be seeded into a clean, firm is rangeland, only rangeland wildlife, for example scaled sorghum stubble, or it can be drilled into a firm prepared quail and antelope, are typical. Extreme care is needed in eedbed. Seeding early in spring has proven most success- managing livestock grazing in or to provide suitable ul. habitat on these soils. Windbreaks and environmental plantings of trees and Potential is poor for urban and recreational develop- limbs commonly grown in the area are generally well ment. The chief limiting soil features are the loose, coarse uited to this soil. Cultivation to control competing textured soil, steep slopes, and rapid permeability. Capa- vegetation should be continued for as many years as bility subclass VIIs irrigated, VIIs nonirrigated; Gravel possible following planting. Trees that are best suited and Breaks range site. ave good survival are Rocky Mountain juniper, eastern 69—Valent sand, 0 to 3 percent slopes. This is a deep, .edcedar, ponderosa pine, Siberian elm, Russian-olive, and excessively drained soil on plains at elevations of 4,650 to hackberry. The shrubs best suited are skunkbush sumac, 5,100 feet. It formed in eolian deposits. Included in -lac, Siberian peashrub, and American plum. mapping are small areas of soils that have lime within a Wildlife is an important secondary use of this soil. The depth of 40 inches. cropland areas provide favorable habitat for ring-necked Typically the surface layer is brown sand about 8 Pheasant and mourning clove. Many nongame species can inches thick. The underlying material to a depth of 60 e attracted by establishing areas for nesting and escape inches is brown sand. ..over. For pheasants, undisturbed nesting cover is essen- Permeability is rapid. Available water capacity is ti;d and should be included in plans for habitat develop- moderate. The effective rooting depth is 60 inches or rent, especially in areas of intensive agriculture. Range- more. Surface runoff is slow, and the erosion hazard is and wildlife, for example, the pronghorn antelope, can be low. attracted by developing livestock watering facilities, This soil is suited to limited cropping. Intensive managing livestock grazing, and reseeding where needed. cropping is hazardous because of erosion. The cropping This soil has poor potential for urban and recreational system should be limited to such close grown crops as al- Jevelopment. Slow permeability and high shrink swell falfa, wheat, and barley. The soil also is suited to ir- cause problems in dwelling and road construction. Capa- rigated pasture. A suitable cropping system is 3 to 4 'ulity subclass Ille irrigated, IVe nonirrigated; Clayey years of alfalfa followed by 2 years of corn and small 'lairs range site. grain and alfalfa seeded with a nurse crop. 68—Ustic Torriortheuts, moderately steep. These are Closely spaced contour ditches or sprinkers can be used deep, excessively drained soils on terrace breaks and in irrigating close grown crops. Contour furrows or sprin- !scarpments at elevations of 4,450 to 5,100 feet. They klers should be used for new crops. Applications of bar- 'ormed in gravelly alluvium and have slopes of 9 to 25 nyard manure and commercial fertilizer help to maintain percent. Included in mapping are small areas of soils that good production. have pockets of sandy loam and loam in the underlying The potential vegetation is dominated by sand material. bluestem, sand reedgrass, switchgrass, sideoats grama, Typically the surface layer In pale brown gravelly amid needleandthread, little blueetern, and blue grama. Poten- about 10 inches thick. The underlying material to a depth tial production ranges from 2,500 pounds per acre in )f 60 inches is pale brown gravelly sand. favorable years to 1,800 pounds in unfavorable years. As 950689 WELD „JUNTY, COLORADO, SOUTHERN PART 45 i ige condition deteriorates, the sand bluestem, The potential vegetation is dominated by sand s..itchgrass, sand reedgrass, sideoats grama, and little bluestem, sand reedgrass, switchgrass, sideoats grama, bluestem decrease, forage production drops, and sand needleandthread, little bluestem, and blue grama. Poten- „y re increases. Undesirable weeds and annuals invade tial production ranges from 2,500 pounds per acre in a 1 "blowout" conditions can occur as range condition favorable years to 1,800 pounds in unfavorable years. As becomes poorer. range condition deteriorates, the sand bluestem, Management of vegetation on this soil should be based switchgrass, sand reedgrass, sideoats grama, and little ( taking half and leaving half of the total annual produc- bluestem decrease, forage production drops, and sand t a. Seeding is desirable if the range is in poor condition. sage increases. Undesirable weeds and annuals invade Sand bluestem, sand reedgrass, indiangrass, switchgrass, and "blowout" conditions can occur as range condition sideoats grama, little bluestem, and blue grama are suita- becomes poorer. 1 for seeding. Because this soil is susceptible to soil Management of vegetation on this soil should be based L.dwing, it should be seeded using an interseeder, or the on taking half and leaving half of the total annual produc- seed should be drilled into a firm, clean sorghum stubble. tion. Seeding is desirable if the range is in poor condition. I� r eding early in spring has proven most successful. Brush Sand bluestem, sand reedgrass, indiangrass, switchgrass, u uagement also can help in improving deteriorated side-oats grama, little bluestem, and blue grama are suita- range. ble for seeding. Because this soil is susceptible to soil Windbreaks and environmental plantings are fairly well blowing, it should be seeded using an interseeder or the 999 iced to this soil. Blowing sand and the moderate availa- seed should be drilled into a firm, clean sorghum stubble. I a water capacity are the principal hazards in establish- Seeding early in spring has proven most successful. Brush ing trees and shrubs. The soil is so loose that trees should management can also help in improving deteriorated ,, h- planted in shallow furrows, maintaining vegetation range. I tween the rows. Supplemental irrigation is needed to Windbreaks and environmental plantings are generally L.aure survival. Trees that are best suited and have good not suited to this soil. Onsite investigation is needed to survival are Rocky Mountain juniper, eastern redcedar, determine if plantings are feasible. i. 1 nderosa pine, and Siberian elm. The shrubs best suited Wildlife is an important secondary use of this soil. Ran- . , skunkbush sumac, lilac, and Siberian peashrub. geland wildlife, for example, the pronghorn antelope, can Wildlife is an important secondary use of this soil. The be attracted by developing livestock watering facilities, cropland areas provide'favorable habitat for ring-necked managing livestock grazing, and reseeding where needed. I easant and mourning dove. Many nongaine species can This soil has fair potential for urban development. The I attracted by establishing areas for nesting and escape chief limiting soil features are the rapid permeability and . cover. For pheasants, undisturbed nesting cover is essen- the susceptibility to soil blowing. Septic tank absorption I' I and should be included in plans for habitat develop- fields function properly, but in places the sandy sub- u ant, especially in areas of intensive agriculture. Range- stratum does not properly filter the leachate. Sewage -' ' land wildlife, for example, the pronghorn antelope, can be lagoons must be sealed. Once established, lawns, shrubs, attracted by developing livestock watering facilities, and trees grow well. Capability subclass VIe irrigated, u imaging livestock grazing, and reseeding where needed. Vie nonirrigated; Deep Sand range site. This soil has fair potential for urban development. The 71—Valent-Loup complex, 0 to 9 percent slopes. This primary limiting soil features are the rapid permeability level to moderately sloping map unit occupies hills, ridges, and the susceptibility to soil blowing. Septic tank absorp- and depression or pothole-like areas in the sandhills at I .n fields function properly, but in places the sandy sub- elevations of 4,670 to 4,700 feet. The Valent soil makes up b..ratuIn does not properly filter the leachate. Sewage about 60 percent of the unit, the Loup soil about 35 per- t, lagoons must be sealed-. Once established, the lawns, cent. About 5 percent is dune sand. The Valent soil occu- r - nubs, and trees grow well. Capability subclass IVe ir- pies the hills and ridges and the Loup soil the depressions i ated, VIe nonirrigated; Deep Sand range site. or potholes. '.., 70—Valent sand, 3 to 9 percent slopes. This is a deep, The Valent soil is deep and excessively drained. It excessively drained soil on plains at elevations of 4,650 to formed in eolian deposits. Typically the surface layer is f, .00 feet. It formed in eolian deposits. Included in brown sand about 8 inches thick. The underlying material P ipping are small areas of soils that have lime within a to a depth of 60 inches is brown sand. 1. depth of 40 inches. Also included are small areas of soils Permeability is rapid. Available water capacity is y1 that have sandstone between 40 and 60 inches. moderate. The effective rooting depth is 60 inches or iI Typically the surface layer of the Valent soil is brown more. Surface runoff is slow, and the erosion hazard is ,t c,..nd about 6 inches thick. The underlying material to a low. depth of 60 inches is brown sand. The Loup soil is deep and poorly drained. It formed in Permeability is rapid. Available water capacity is sandy alluvium. Typically the surface layer is very dark { Aerate. The effective rooting depth is (i0 inches or grayish brown, mottled loamy sand about 16 inches thick. il more. Surface runoff is slow, and the erosion hazard is The underlying material to a depth of 60 inches is light low. brownish gray, mottled loamy sand and sandy loam. i 1 950689 46 SOIL SURVEY Permeability is rapid. Available water capacity is yellowish brown fine sandy loam about 16 inches thick. moderate. A water table is at or near the surface in The substratum to a depth of 60 inches is sandy loam. spring and about 36 inches below the surface in fall. Sur- Permeability is moderately rapid. Available water face runoff is slow, and the erosion hazard is low. capacity is moderate. The effective rooting depth is 60 This unit is used for rangeland and wildlife habitat. The inches or -more. Surface runoff is slow, and the erosion potential native vegetation on the Valent soil is hazard is low. dominated by sand reedgrass, sand bluestem, blue and In irrigated areas this soil is suited to the crops com- hairy grama, little bluestem, needleandthread, and moldy grown in the area. Perennial grasses and alfalfa or sideoats grains. Potential production ranges from 1,800 close grown crops should be grown at least 50 percent of pounds per acre in favorable years to 1,400 pounds in un- the time. Contour ditches and corrugations can be used in favorable years. As range condition deteriorates, the sand irrigating close grown crops and pasture. Furrows, con- bluestem, sand reedgrass, sideoats grans, and little tour furrows, and cross slope furrows are suitable for row bluestem decrease; sa dhill nmhly and blowout grass in- crops. Sprinkler irrigation is also desirable. Keeping til- crease, and forage production drops. "Blowouts" occur as lage to a minimum and utilizing crop residue help to con- range condition becomes poorer. trol erosion. Maintaining fertility is important. Crops The native vegetation on the Loup soil is dominated by respond to applications of phosphorus and nitrogen. switchgrass, little bluestem, sand reedgrass, and western In nonirrigated areas this soil is suited to winter wheat, wheatgrass. Indiangrass, sand bluestem, prairie cordgrass, barley, and sorghum. Most of the acreage is planted to slender wheatgrass, alkali sacaton, saltgrass, sedge, and winter wheat. The predicted average yield is 20 bushels rush are also present. Potential production ranges from per acre. The soil is summer fallowed in alternate years 4,000 pounds per acre in favorable years to 3,000 pounds to allow moisture accumulation. Generally precipitation is in unfavorable years. As range condition deteriorates, the too low for beneficial use of fertilizer. switchgrass, sand bluestem, indiangrass, little bluestem, Stubble mulch fanning, striperopping, and minimum bl- and prairie cordgrass decrease, and saltgrass, blue grama, lage are needed to control soil blowing and water erosion. sand dropseed, sedge, and rush increase. Undesirable Terracing also may be needed to control water erosion. weeds and annuals invade the site as range condition The potential native vegetation on this range site is becomes poorer. dominated by sand bluestem, sand reedgrass, and blue Seeding with an interseeder is advisable if the range is grains. Needleandthread, switchgrass, sideoats grama, in poor condition. Sand reedgrass, sand bluestem, sideoats and western wheatgrass are also prominent. Potential grama, switchgrass, little bluestem, indiangrass, and blue production ranges from 2,200 pounds per acre in favora- grama are suitable for seeding. Seeding early in spring ble years to 1,800 pounds in unfavorable years. As range has proven most successful. Grazing should be light to condition deteriorates, the sand bluestem, sand reedgrass, prevent range deterioration. and switchgrass decrease and blue grama, sand dropseed, Wildlife is an important secondary use of this unit. On and sand sage increase. Annual weeds and grasses invade the Valent soil, rangeland wildlife, for example, the the site as range condition becomes poorer. pronghorn antelope, can be attracted by developing Management of vegetation on this soil should be based livestock watering facilities, managing livestock grazing, on taking half and leaving half of the total annual produc- and reseeding where needed. tion. Seeding is desirable if the range is in poor condition. The Loup soil, which is typically wet and produces an Sand bluestem, sand reedgrass, switchgrass, sideoats abundance of wetland vegetation, attracts wetland wil- grama, blue grama, pubescent wheatgrass, and crested dlife species, such as mallard, teal, geese, and miscellane- wheatgrass are suitable for seeding. The grass selected ous shorebirds. Primary management of this soil for wet- should meet the seasonal requirements of livestock. It land wildlife includes managing livestock grazing, fencing should be drilled into a clean, firm sorghum stubble or a to control livestock, protecting from fire, and preventing prepared seedbed. Seeding early in spring has proven drainage. Natural wetland vegetation should be allowed most successful. to develop. Capability subclass VIe irrigated, Vie nonir- Windbreaks and environmental plantings are fairly well rigated; Valent soil in Choppy Sand Meadow range site, capacity tothis soil. e P it Bloc owing sand ripal sandraadi low available water water Loup soil in Sandy Meadow range site. I y are 72—Vona loamy sand, 0 to 3 percent slopes. This is a and shrubs. The soil is so loose that trees should be deep, somewhat excessively drained soil on plains and planted in shallow furrows and vegetation maintained high terraces at elevations of 4,600 to 5,200 feet. It between the rows. Supplemental irrigation is needed to formed in eolian or alluvial deposits. Included in mapping insure survival. Trees that are best suited and have good are some leveled areas. Also included are small areas of survival are Rocky Mountain juniper, eastern redcedar, soils that have a loamy substratum and some areas of ponderosa pine, and Siberian elm. The shrubs best suited soils that are noncalcareous to a depth of 60 inches. are skunkbush sumac, lilac, and Siberian peashrub. Typically the surface layer of this Vona soil is grayish Wildlife is an important secondary use of this soil. The r 6 and as e favorable inches es The my ler 6 oam.es is Theoamy subsoil sand i brown and light pheasant t and mourning dove. Many nongame specietat for s can 9506,42 Ii WELD COUNTY, COLORADO, SOUTHERN PART 47 2 .._tracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected aver. For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can a' and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be le ., especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in mu wildlife, for example, the pronghorn antelope, can be spring has proven most o and environmental successful. plantin s are fairly well 'I g gin iv developinggin livestock watering facilities, e u' aging livestock ont and reseeding where re Lion. capacity are a the priincipral low trees 11, Is soil has good potential for urban and recreational and shrubs. The soil is so loose that trees should be e es grow well. The established,flimitingthe lawns, shrubs, and h tees grow well. The chief soil feature is the planted in shallow furrows and vegetation maintained ae I permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed ma rd of ground water contamination from sewage to insure survival. Trees that are best suited and have agoons. In places recreational development is limited by good survival are Rocky Mountain juniper, western Ira susceptibility to soil blowing. Capability subclass IIIe redcedar, ponderosa pine, and Siberian elm. The shnibs n ated, IVe nonirrigated; Sandy Plains range site. best suited are skunkbush sumac, lilac, and Siberian ' —Vona loamy sand, 3 to 5 percent slopes. This is a peashrub. Wildlife is au important secondary use of this soil. The leep, somewhat excessively drained soil on plains and cropland areas provide favorable habitat for ring-necked ni d terraces n alluvial p its.4,6 Included0 to 5,200 in feet. gt pheasant and mourning dove. Many nongame species can { Fo led in eolian or alluvial deposits. in mapping be attracted by establishing areas for nesting and escape I. are some leveled areas. Also included are small areas of cover. For pheasants, undisturbed nesting cover is essen- soils that have a loamy substratum and some areas of 1 tial and should be included in plans for habitat develop- se s that are surface to a depth of 60 inches. meat, especially in areas of intensive agriculture. Range- �, ypically the surface layer of this Vona soil is grayish land wildlife, for example, the pronghorn antelope, can be brown. The upper 6 inches is loamy sand and the lower 5 attracted by developing livestock watering facilities, in-'•es is fine sandy loam. The subsoil is brown and light managing livestock grazing, and reseeding where needed.subs 1yr ou brown fine sandy loam about 14 inches thick. This soil has good potential for urban and recreational Toe s substratum to a depth of inches is sandy loam. development. Once established, the lawns, shrubs, and Permeability is moderately rapid. Available water trees grow well. The primary limiting soil feature is the ct salty is moderate. The effective rooting depth is 60 rapid permeability in the substratum, which causes a in ies or more. Surface runoff is slow, and the erosion hazard of ground water contamination from sewage i. hazard is low. lagoons. In places recreational development is limited by '. This soil is suited to limited cropping. Intensive the susceptibility to soil blowing. Capability subclass IVe et aping is hazardous because of soil blowing. The irrigated, Vle nonirrigated; Sandy Plains range site. ci.,pping system should be limited to such close grown 74—Vona loamy sand, 5 to 9 percent slopes. This is a crops as alfalfa, wheat, and barley. The soil is also suited deep, somewhat excessively drained soil on plains at t< lrigated pasture. A suitable cropping system is 3 to 4 elevations of 4,600 to 5,200 feet. It formed in eolian 1 yrs of alfalfa followed by 2 years of corn and small deposits. Included in mapping are small areas of soils that grain and alfalfa seeded with a nurse crop. have a loamy substratum and areas of soils that are non- Closely spaced contour ditches or sprinklers can be calcareous to a depth of 60 inches. u d in irrigating close grown crops. Contour furrows or Typically the surface layer is grayish brown. The upper s iklers should be used for new crops. Application of 6 inches is loamy sand and the lower 4 inches is fine barnyard manure and commercial fertilizer helps to main- sandy loam. The subsoil is brown and light yellowish tr^u good production. brown fine sandy loam about 12 inches thick. The sub- 'he potential native vegetation on this range site is stratum to a depth of 60 inches is loamy sand. dominated by sand bluestem, sand reedgrass, and blue Permeability is moderately rapid. Available water grama. Needleandthread, switchgrass, sideoats grama, capacity is moderate. The effective rooting depth is 60 , a I western wheatgrass are also prominent. Potential inches or more. Surface runoff is medium, and the erosion p uluction ranges from 2,200 pounds per acre in favora- hazard is low. ble years to 1,800 pounds in unfavorable years. As range The potential native vegetation on this range site is condition deteriorates, the sand bluestem, sand reedgrass, dominated by sand bluestem, sand reedgrass, and blue i' a 1 switchgrass decrease and blue grama, sand dropseed, grama. Needleandthread, switchgrass, sideoats grama, I,are o nt.a 1 sand sage increase. Annual weeds and grasses invade and rl westernranges whfreatgm rass palsods eminper ent in Potential a the site as range condition becomes poorer. p' Management of vegetation on this soil should be based ble years to 1,800 pounds in unfavorable years. As range ',g- o taking half and leaving half of the total annual produc- condition deteriorates, the sand bluestem, sand reedgrass, t..,n. Seeding is desirable if the range is in poor condition. and switchgrass decrease and blue grama, sand dropseed, l Mand bluestem, sand rsadgrals, rwltehgrufl, Mlduunte end sand no 1100000. Annual Woodhi Mid lOssaaM lands g••Tma, blue grams, pubescent wheatgrass, and crested the site as range condition becomes poorer. ii II l ' i 950689 SOIL SURVEY 48 Management of vegetation on this soil should be based Windbreaks and environmental plantings are generally on taking half and leaving half of the total annual produc- suited to this soil. Soil blowing, the principal hazard in tion. Seeding is desirable if the range is in poor condition. establishing trees and shrubs, can be controlled by cul- Sand bluestem, sand reedgrass, switchgrass, sideoats tivating i atiatiornly in bee tree row tween the rows. d by Supplementalarstrip of ion grains, blue grama, pubescent wheatgrass, and crested vemay be necessary betw at the time . planting a during the wheatgrass are suitable for seeding. The grass selected dry periods. Trees that are best of suited and have good should d clean fisoumrequirements ou bl livestock. can survival are Rocky Mountain juniper, eastern redcedar, be seeded intoa a clean, firm sorghum d. Seed or itcan be ponderosa pine, Siberian elm, Russian-olive, and hackber- spring into a firm most successful.ucc seedbed. Seeding early in ry. The shrubs best suited are skunkbush sumac, lilac, and sprinn has proven Siberian peashrub. Windbreaks this and environmental stdl nlow are fairly well Wildlife is an important secondary use of this soil. suited yo this soil. Blowing sand and low available water Ring-necked pheasant, mourning dove, and many capacity are. the principal hazards in establishing trees game species can be attracted by establishing areas for non- and shrubs. This soil is so loose that trees should be nesting and escape cover. For pheasants, undisturbed planted ew in shallow furrows and vegetation tion maintainednee nesting cover is essential and should be included in plans between the rows. Supplemental irrigation may be needed for habitat development, especially in areas of intensive to insure survival. Trees that are best suited and have agriculture. good survival are Rocky Mountain juniper, eastern gThis soil has good potential for urban and recreational redcedar, ponderosa pine, and Siberian elm. The shrubs development. Lawns, shrubs, and trees grow well. The best suited are skunkbush sumac, lilac, and Siberian only limiting feature is the rapid permeability in the sub- peashrub. stratum, which causes a hazard of ground water con- Wildlife is an important secondary use of this soil. Ran- tannination from sewage lagoons. Capability subclass Its geland wildlife, for example, the pronghorn antelope, can irrigated. be attracted by developing livestock watering facilities, 76—Vona sandy loam, 1 to 3 percent slopes. This is a managing livestock grazing, and reseeding where needed. deep, well drained soil on plains and high terraces at This soil has good potential for urban and recreational elevations of 4,600 to 5,200 feet. It formed in eolian and development. Once established, the lawns, shrubs, and alluvial deposits. Included in mapping are some leveled trees grow well. The primary limiting soil feature is the areas. Also included are small areas of soils that have a rapid permeability in the substratum, which causes a loamy substratum and areas of soils that are noncalcare- hazard of ground water contamination from sewage ous to a depth of 60 inches. lagoons. In places recreational development is limited by Typically the surface layer of this Vona soil is grayish the susceptibility to soil blowing. Capability subclass Vie brown sandy loam about 10 inches thick. The subsoil is irrigated, V Ie nonirrigated; Sandy Plains range site. brown fine sandy loam about 18 inches thick. The sub- 75—Vona sandy loam, 0 to 1 percent slopes. This is a stratum to a depth of 60 inches is sandy loam. deep, well drained soil on high terraces at elevations of Permeability is moderately rapid. Available water 4,650 to 4,950 feet. It formed in alluvial deposits. Included capacity is moderate. The effective rooting depth is 60 in mapping are some leveled areas and small areas of inches or more. Surface runoff is slow, and the erosion soils that have a loamy substratum. grayish a hazard is lows areas this soil is suited to all crops Typically the surface layer of this Vona soil is com- brown sandy loam about 10 inches thick. The subsoil is monly grown in the area, including corn, sugar beets, brown fine sandy loam about 20 inches thick. The sub- beans, alfalfa, small grain, and onions. An example of a stratum to a depth of GO inches is sandy loans. suitable cropping system is 3 to 4 years of alfalfa fol- Permeability is moderately rapid. Available water lowed by corn, corn for silage, sugar beets, small grain, or capacity is moderate. The effective rooting depth is 60 beans. Land leveling, ditch lining, and installing pipelines inches or more. Surface runoff is slow, and the erosion are„fen hods dedfor proper erigaLi a er applications. but furrow ir- hazard low. This soil is used almost entirely for irrigated crops. IL rigation is the most common. Barnyard and com- is suited to all crops commonly grown in the area, includ- mercial fertilizer are needed for top yields. ing corn, sugar beets, beans, alfalfa (fig. 7), small grain, Windbreaks and environmental plantings are generally potatoes, and onions. An example of a suitable cropping suited to this soil. Soil blowing, the principal hazard in system is 3 to 4 years of alfalfa followed by corn, corn for establishing trees and shrubs, can be controlled by vegetation between the rows. Supplemental irrigation cul- silage, sugar beets, small grain, or beans. The rapidly tivating only in the tree row and by leaving a strip of permeable substratum slightly restricts a some crops. All nis methods of irrigation are Proper but furrow n ir- mayd Trees at suited planting tdthave good ring dry surrvival rigation is the most nymmon. Propan irrigationomm manage- periods. pine, Siberian elm, Russian-olive, and hackberry. The meat is essential. Barnyard manure and commercial fertil- are Rocky Mountain juniper, eastern redcedar, ponderosa izer are needed for top yields. 950689 I __... _'• z.,, Land Treatment Facility - Weld County, Colorado ■ WHO: HS Resources, Inc. (formerly known as Elk Exploration), a 200 person, publicly held, independent oil and gas producer active in Weld County since 1985. ■ WHAT: A centralized, noncommercial, land treatment and recycling facility for nonhazardous oil and gas-related wastes. IN WHEN: Upon approval of USR by Weld County. COGCC Rule 907 permit already obtained. ■ WHERE: On a 160 acre parcel of undeveloped rangeland located 5 miles east of Platteville. IN WHY: To provide HS Resources with an environmentally-sensitive, cost-effective, proven means of minimizing drilling and production Cwastes through recycling. O Cn X CO 2. EXHIBIT i E i, Q.-, is4 /ail Why This Location was Selected ■ Reviewed over 15 available parcels in Weld County. • Absence of shallow, alluvial aquifers underlying the site. • Extensive oil and gas development in the area, centrally located. • Access to paved road (WCR 32). • Undeveloped rangeland with marginal agricultural value. ■ Limited residential development. • Lack of surface water features or other sensitive environmental areas (wetlands, recharge zones, etc...) CO cn O a) CO CO COGCC'S Rule 907 Permit r. Y, Requirements • HS Resources has obtained a permit from COGCC to perform land treatment under Rule 907. • Permit requirements are designed to protect the environment. ■ Site selection and hydrogeologic characterization of the site. • Waste characterization. • Operating plan. • Emergency contingency and response plan. ■ Inspections and maintenance, environmental monitoring. • Record keeping. • Closure plan. tin Ce co Hydrogeologic Conditions • HS Resources has conducted a subsurface investigation at the property. • Dry sand from the surface to a depth of 15 feet underlain by clay from 15 to 30. Claystone/shale bedrock at a depth of approximately 30 feet. • Confined ground water occurs in low permeability clay at a depth of approximately 20 feet. • Ground water is also present under confined conditions in a thin gravel bed beneath the clay at a depth of approximately 30 feet. • The ground water gradient is very low ( approximately 0.04 ft per foot) and flows to the east at an estimated rate of approximately 0.61 feet per year. co G1 0 Ce to N IA OPEN RANGE - FRESH WATER DRILLING MUD pv/ APPLICATION AREA 42/c, �pq- • !i ( • 1 r U MW-5 r 1 \ • PLANNED LAND \ TREATMENT AREA POSSIBLE FUTURE LAND TREATMENT AREA MW-4 • MW-3 MW-2 • MW--11 w ////:/// / WCR 32 EXPLANATION FIGURE 1 SITE PLAN EXISTING GROUNDWATER • HSR LAND TREATMENT FACILITY MONITORING WELL PROPOSED ADDITIONAL SE/4 SEC. 13. T3N-R66W O GROUNDWATER MONITORING WELL Prepared For: USR - 1067 WELD COUNTY DEPARTMENT 0 200 400 OF PLANNING SERVICES 1 SCALE IN FEET Prepared By: HS RESOURCES, INC. File No.: HSRES/H—I — DRAFTED BY: ODD — DATE:12/8/94 Denver. Colorado 95UtiS 3 DEPTH (FT) 0 - 5 •• • • • - ' • • • • • SAND 10 • • 15 - 20 - - - - v -- - - - - -- - - - - CLAY 25 - - - - -- - - - - 30 0 0 0 0 O 0 0 0 0 O O O O O 0 0 0 0 GRAVEL 0 0 0 0 0 0 0 0 0 O O 0 0 0 0 0 0 0 — _ - - — SHALE 35 40 COMPOSITE LOG & MONITORING WELL COMPLETION DIAGRAM Prepared For: WELD COUNTY DEPARTMENT OF PLANNING SERVICES Prepared By: HS RESOURCES, INC. File No.; HSRES/CL-1 — DRAFTED BY: 0DG - DATE:I/4/95 Denver, Colorado 9506539 S-SW E-NE A A ' 5040 MW-2 5030- MW 3 5020 MW-1 - (Projected) 5010 - _.�,. .. - - - - =�w__._ MW-6 5000— — — --..-.,__ -,-.........c. - TD=34' mot__ 4990— ---. ..Z__-_-------- _ - TD=31' - - TD=32' 4980— TD=32' 4970 IIIIIIIII IIII IIII II11 IIII 1111 1 I I 1 1111 111111111 1111 ' 1111 IIII IIII IIII 111111111 0 200 400 600 800 1000 1200 1400 1600 1800 CROSS SECTION A-A' CO EXPLANATION 10 - LAND TREATMENT FACILITY C]! i _ SW SW SEC. 18, T3N-R65W SAND C - _ Prepared For: C 0 iiIII WELD COUNTY DEPARTMENT Cel -_i SHALE 0 100 OF PLANNING SERVICES CD y WATER LEVEL Prepared By: HORIZONTAL SCALE: 1" = 200' HS RESOURCES, INC. VERTICAL SCALE: 1" = 20' File No.: HSRES/A—A DRAFTED BY: DDG — DATE:1/4/95 Denver, Colorado C:0,_ O ii °o 0 0 0 0 CZ)01 Cl) C:0 CPI Z; h h h h d. �. M • 5 4989.18 I h--- Pep �- - - - U 3 HSR MILSY 16-3 3 . MW-4 • Or MW-3 • 1997.00 µW-2 DIRECTION OF • IIIIPm- GROUNDWATER FLOW 5006./2 MW-1 I • 4989.3.T J � - - - - - - - - - - - - - - - - - }- - WCR 32 EXPLANATION FIGURE 2 MW-1 GROUNDWATER MONITORING WELL GROUNDWATER CONTOUR MAP • 5006.12 WATER TABLE ELEVATION (ft.) HSR LAND TREATMENT FACILITY SE/4 SEC. 13, T3N-R66W SOOO 00 WATER TABLE CONTOUR (H.) Prepared For: USR - 1067 - - - - OUTLINE OF LAND TREATMENT AREA WELD COUNTY DEPARTMENT OF PLANNING SERVICES L 100 ZOO Prepared By: SCALE IN FEET HS RESOURCES, INC. File No.: NSRES/N-2 — DRAFTED ST: DOG — DATE:12/8/94 Denver, Colorado 950689 MEASUREMENT OF GROUND WATER ELEVATIONS ITS Resources Land Treatment Facility SE/4 Section 13, Township 3 North Range 66 West Monitoring Date Ground Ground Water Depth to Well Measured Elevation (ft} Elevation (ft) Ground Water (ft) MW-1 10-03-94 5015.29 Dry -- 10-10-94 Dry -- 10-22-94 4987.99 24.33 11-22-94 4989.18 22.99 MW-2 10-03-94 5031.73 Dry -- 10-10-94 Dry -- 10-22-94 5006.50 25.23 11-22-94 5006.12 25.61 MW-3 10-03-94 5018.46 Dry -- 10-10-94 Dry -- 10-22-94 4995.56 22.90 11-22-94 4997.00 21.46 MW-4 10-03-94 5017.07 Dry -- 10-10-94 Dry -- 10-22-94 Dry -- 11-22-94 Dry -- MW-5 10-03-94 5004.03 Dry -- 10-10-94 Dry -- 10-22-94 4989.48 14.55 11-22-94 4989.18 14.85 Note: MW-4 was drilled and completed to a depth of 25 feet and did not penetrate water- bearing strata. Depth to ground water is measured in feet below the ground surface. 950699 Outline of the Land Treatment Operation • Centralized treatment and recycling of oil-bearing soil and frac sand. • Thin-spreading and composting techniques using naturally-occurring bacteria to degrade the hydrocarbons. • Tilling, addition of water and fertilizer. • Performance monitoring, sampling and analysis. • Removal of treated material for use as back fill, road base, berm construction material, etc., at other HS Resources well sites. • Pilot projects with Weld County Extension Office to demonstrate the most effective means of land treatment and beneficial uses of drilling mud, etc.... • With the exception of a perimeter fence, no above ground improvements will be made. Ct 0 cc co USE BY SPECIAL REVIEW _ R66 W, R65 W JOEL O.•'Jett .Ea.,O Y iBOftud il JIMpUf I•WODEt1 ORIJ v`, I daLL.M.:. WI.E.R.A,H. pa.dSnld,1O1. SE/4 - SECTION 13 - T 3 N - R 66 W ': . � -� - ..4- WELD COUNTY, COLORADO SOL TYPE I SCS,19.0) J" 4__ ) ,..v,.0 ran. e.omwui rs RpEDECIL I IAA 9NC1E--110.11 C01PlE}.f •per..*ow. -`'=4. --- - -- - -- �—— __ _3. 60 era...doge r--.In.d•.a. r . .... ..E• _ r la. «, per% ar�`-._— T IE!4 RAIL —t. ..�N •— Mfff�f* • • wsr.a.rr sp.o,a"a rer.a•a+veer.; r ` ) 1 � • • -, I ..t....7:..-7:4 y 69 dote r ew.n.s.. .r i+�* �:�: a� a w' e r N / • 170 \`.�,72 • / *( _ / / F1_ ii deep•r sae.,awal. 6 t•e 111 L• C EEETR! WfYL f .5\ ` / Rr10.OlEI� — \.dwt JOIEr011 lE7f, - -/ vow UO.ry snoaa s pert.,.doped dear'+.. w. •••.fre•. a Ley/ • r I . `1 i � / _ 72 tr....sr.d. .r. r'■e.. ,... - .a.a.w r."i°'- maven e , } 1 • \� /,' e...l.erne..n,..er•w ��.-.- \ ) \'�. - I""' pee. 1 •( % 1� lhC72 i / /// , ('%' ' - ' vow.r.ono.,e .a-..,-,- _ t1--- -~ -w•\' :. OW, ....e. . I :T\.1 ! c aaJswas\ d.r.«,ct deers J...4,nw e.v.,a+err .d,• \ nrla\ U.,..f,.y.... pen.VSO.re r..o ,_ j -IC I / // 72 I f • /l I !i 1 / 70 ' ��\ 11.x. I �' I14... ,I.y \�\ \ I ` a. ,..t tle y O.'a,'Fl...y...u..L. r rf l,Ww�...a..1. f if ra.yae.fu \ Yoo toolonyet no t nr�.w wt..l log.o .wd asn.a ui. -�. PROPOSED LAND FARM 60 r • � �.e-..W,,e�, e. .ere..,.. l1 i .flans, �a SE:4-SECTION 13-T 3 N-Fl 66 W �' . ...� .pw«m.«v i If ..ad n mum wwu.w.-1 ndm.u..« WELD COUNTY,COLOR r (- •.. 72 ,. eeo.q.so ow i I I I . 1•a.toms,o.,w re of f...,............were tom,.. ADO N.It.AMAMI E a.lJ. 70 1 •, . ! � I' I S M i OM .1h. Colorado. wtW Mllwr...toe o as.. aradd do3aiud"..t. IRS- • I .,y a-....,N— ..reed _ \, !s Oar _ '1 IIE30 OOIIMTY —a! AWED 0IC A.O.IY. � II 61.1....s.n a.Le., .eerie... 7 ufG o-4 —\. . \. .t I. rl•I 0 ...,,adeed,u..b as lea Mod E.443.' d,.., ...FA." �-I —— '—' — \'� '-- �. { `.i7 n HS RESOURCES, INC. PLAT SCALE : 1" = 200' -4 n.— ,.e..E,WOW�uy,lne4n« .,o-..,.,1.»I..a M.. .1.t .;..n...,ryl.a ny Yr.a�•W....ra.l.t 1'ANCti PROPOSED FOR THE CONTOUR INTERVAL:2' .i.,�ta`," w.y y.l.l ..re..`.a..a la..renew • Q tot Err SPECIAL PEAR REVIEW EIE14-SEC.is(COWMAN°M0 00 ... SEPTEMBER 29,1994 AGES,1101E OR.LESS) ......,t...., 1,0 CD N O / OPEN RANGE - FRESH WATER DRILLING MUD / APPLICATION AREA �P9%a• 1 5/ C° • \ M U r 7 \ • PLANNED LAND TREATMENT AREA J POSSIBLE FUTURE LAND / '\ TREATMENT AREA / MW-4 MW-3 MW-2 /71/ • MW 7 /21/ WCR 32 EXPLANATION FIGURE 1 MW-I SITE PLAN EXISTING GROUNDWATER HSR LAND TREATMENT FACILITY • MONITORING WELL SE/4 SEC. 13. T3N-R66W PROPOSEDADDITIONAL Prepared For: GROUNDWATER MONITORING WELL USR - 1067 WELD COUNTY DEPARTMENT 0 200 400 OF PLANNING SERVICES SCALE IN FEET Prepared By: EIS RESOURCES, INC. File No.: NSRES/H-1 — DRAFTED 8Y: DOG — DATE:12/8/94 Denver, Colorado 950699 7u lilliii Yr.+P > €1 e 1 ; ms ® 9 ,, + t �•l' i'C `' ,.}gyp y^ re Ysja• c iF su ,A 5 � Y x e '1-� �Fv S -.�w44� Surface Bioremediation (Land Farming) • Phosphorous And Nitrogen Phase II: Periodic• Bacteria Phase I: Soil Spreading Nutrient And Moisture Control Enhancers s T4r...',1----;: ..---- � , I '� Phase III: Periodic Disking For Oxygen Exposure • The basic principle of crudes. In the first step, slowly than more permeable landfarming, also called contaminated soils are spread soils. And, soils containing surface bioremediation, is to over the treatment area in a metals, salts or chlorinated enhance naturally-occurring layer, usually six to 24 inches organics may be toxic to the degradation. Often, areas used thick to allow as much oxygen added bacteria cultures. Some for on site surface as possible to reach the soil. pesticides and herbicides may bioremediation are usually The depth of the treatment also compromise the considered to be temporary zone should not exceed the performance of the bacteria. treatment areas which, after capacity of disking equipment One difficulty with the the treatment is completed, will to expose the deepest sections technique is that emissions be returned to original use. to oxygen and nutrients. After control is difficult in areas Depending on site conditions initial disking, phosphorous and where regulations restrict and regulatory requirements, it nitrogen nutrients are added emissions. In the right may be necessary to start with periodically. It is also possible situation, where permeable soil a liner beneath the to add bacteria enhancers to is contaminated with light bioremediation area. Treatment speed up the process. Then, hydrocarbons, and where a time can range from 60 days to periodic disking will increase suitable treatment site is six months, depending on soil exposure to oxygen and the conveniently located, land volume, contaminant and other nutrients. Sites located in farming has proven itself to be cleanup goal. Lighter higher ambient temperatures an effective and economical petroleum fractions (gasoline, degrade the hydrocarbons remediation technology. diesel and heating oils) faster. Soils with low degrade faster than the heavier permeability recover more 38 September-October 1991 Soils 950689 Environmental Monitoring ■ Soil and ground water conditions will be monitored to ensure that land treatment does not impact the environment. ■ Biannual soil sampling for BTEX and TPH. ■ Quarterly ground water monitoring, including ground water levels, BTEX, and TPH. ■ Quarterly, semiannual, and annual monitoring reports to the Weld County Health Department and COGCC. 4.1 0 cc co Record Keeping • All phases of the land treatment/recycling operation will be documented. ■ Dates, sources, volumes, and types of waste received. IN Waste characterization reports. • Treatment and operational information, including the final disposition of the treated material. ■ Inspection records and monitoring reports. • Incident reports, spill reports, or other emergency response information. • Records will be maintained during the facility's operational lifetime and for a minimum of three years after closure. 0 A Closure Plan Will be Submitted to Weld County Health and COGCC ■ A description of the site's history. ■ Site map showing areas utilized for land treatment. ■ Chemical analysis of soil and ground water. ■ An evaluation of the site's potential to impact waters of the state. ■ Reclamation plan, grading plan. ■ Corrective action plan for impacts to soil or ground water. ■ Ground water monitoring will continue for a period of one year after closure. 0 Ct The Proposed Landfarm is Consistent with Weld County's Comprehensive Plan • No net loss of productive agricultural land. • No above ground development, parcel is being left as open space that could easily be converted to another open space or agricultural use. • Preserves the area from scatter-type urban development. • Landfarm will be operated in a manner that preserves Weld County's natural resources, including air, soil, water and wildlife resources. • Reduces the volume of waste that might otherwise require landfill disposal. • Compatible with agricultural use, present and future. to 0 x : . The Benefits • Environmentally-sound, cost-effective method for dealing with drilling and production wastes. • Minimizes through recycling the volume of waste that would otherwise require disposal either at each individual well site or at a commercial landfill in the County. • Promotes communication and understanding between oil and gas, agricultural, and County government interests through a series of pilot programs to show beneficial reuse of E&P waste materials and the best methods for year-round land treatment. • Preserves 160 acres of open space from non-agricultural, scatter-type urban development. to Ul O CD I I DEPTH (FT) GROUND SURFACE 0 • • 5 - • . . ••• • • • • • - • SAND 10 - ,WATER LEVEL IN WELL• • • 15 • • • 20 _ - - - - - - - _ - - - CLAY 25 . - • • . • • .• - SAND • 30 - - - _ - - - 35 - _ - _ - - - CLAY 40 - - - - - - - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 GROUNDWATER — _ 0 0 0 0 0 0 0 0 0 0 0 • o0 0 o GRAVEL _ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 45 — SHALE WARDELL DOMESTIC WATER WELL SW SW SEC. 18, T3N-R65W Prepared For: WELD COUNTY DEPARTMENT OF PLANNING SERVICES Prepared By: HS RESOURCES, INC. File No.: HSRES/WW-1 — DRAFTED BY: DDG — DATE:1/4/95 Denver, Colorado 950689 Ja A Q5 11 :511 ji. _ x EXHIBIT T,OO AND HISTORY _s,�� WELL DATA _22._ WELL LOG evation Date Started Type Drilling—Rotary Date Completed-_Se Water Hole Diameter: From To Type of Material Ldc.' Perf. T2 —_.in. Irom 0 ft. to 344. ft. .irl. from 3/1 ft. to_ 5 ft. in, from ft. to ft. 0 3 Topsoil- " 3 18 Sand CASING BECUKtJ 1$.• 23 Clay n Cemented-from 23 •� z8 Sand Plain Casing 41 41 Clay X Size 1Q", kind_S�etkom._.4_ft. toOtt-- ft. � 44 Gravel g X 3b 415 Shale Sizes'-'.-, kind.3t:eeom--a-ft. to._ -ft• Size._, kind-from ft. to it. Perforated Casin Size— , kind from ft. to ft. Sizes_".' , kind t'iavfrom ft. to_!4- ft. Size, kind from ft. to—_ ft. TEST DATA Date Tested___ >..rltP-mb2 -l-t a - Type of Pamp Length of Test ----~- ~' Constant Yield Drawdown. Static water level 10 ft. PUMP DATA (To be filled in) Type of Pump Outlet Size Driven by florsepower_ Use additional paper if necessary to complete • �� 4fibTER �/� � log and attach. H Viii Ll, DRILLERS STATEMENT Dix DEPTHTOTAL State of Colorado ) s6 County of being duly sworn, deposes and and statement, knows the says: he is the driller of the above described well; he has g read the above em� 1011 Works content thereof, and the same is true of his own knowledge. License No._ 73 -•--- . Subscribed and sworn to before me this day of 19_.___ , 3.9— My Commission expixes Notary Public FORMIC) I-IriAi7£ OUT IN UADRUYLIGATE Leted. (both sides E Triplicate GREEN Copy must be filed with rhr_ Sure togineet within 30-days after well is comp Duplicate Original WHITE {b ) puplic,.0 PINK copy is for the Owns G YELLOW copy for the Driller. WHITE FORM MUST BE AN ORIGINAL COPY ON BOTH SIDES AND SIGNET). 950689 Hello