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1.1 Supplement to Application
Chevron — Tom Creek Integrated Vegetation and Noxious Weed Management Plan Garfield County, Colorado Looking north along Tom Creek drainage Prepared for: Chevron North America Exploration and Production Company Prepared by: WestWater Engineering 2516 Foresight Circle #1 Grand Junction, CO 81505 April 2008 1.0 INTRODUCTION 1.1 Project Description Chevron North America Exploration and Production Company (Chevron) is planning a series of projects in the Clear Creek / Tom Creek drainages in Garfield County, approximately 17 miles northwest of Parachute, Colorado. These projects include existing and proposed well pads, a central production facility site, fresh water and produced water ponds, and pipeline alignments. The project area referred to in this report is approximately 400 acres in size (Figure 1). 2.0 LANDSCAPE SETTING 2.1 Terrain and Vegetation Communities The terrain ranges from very steep mountain side -slopes to gently sloping valley bottoms (Appendix C. Photos 2 and 3). Elevations in the project area range from 6,850 feet in the Tom Creek drainage to 5,950 feet in the Clear Creek bottom land. The predominant vegetation community in the northern Tom Creek drainage bottom is mountain boxelder (Acer negundo), scattered Douglas -fir (Pseudotsuga menziesii), redosier dogwood (Cornus sericea), mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana), and oakbrush (Quercus gambelii). The mountain side -slope vegetation includes mountain big sage, Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis), Utah serviceberry (Amelanchier utahensis), oakbrush, and Indian ricegrass (Achnatherum hymenoides). The mountain side -slopes also contain barren areas of steep shale talus, which supports small populations of sun -loving meadowrue (Thalictrum heliophilum). Vegetation in the Potts Creek drainage and the Tom Creek drainage south of the Potts Creek confluence are similar. Mountain boxelder and narrowleaf cottonwood (Populus angusttfolia) are common trees. Shrubs are dominated by basin big sagebrush (Artemisia tridentata Nutt. ssp. tridentata) and Wyoming big sagebrush, although some mountain big sagebrush is also found. Vegetation on the steep side -slopes is mountain big sagebrush, oakbrush, Utah serviceberry, and often thick Indian ricegrass. The mountain side -slopes also contain barren areas of steep shale talus, which support small populations of sun -loving meadowrue and Roan Cliffs blazingstar (Mentzelia rhizomata). Along Clear Creek the dominant trees are boxelder, New Mexico locust (Robinia neomexicana) and narrow leaf cottonwood. Basin big sagebrush is the predominant shrub along with various (often weedy) forbs and grasses. The vegetation on the east -facing side -slope of Clear Creek drainage consists of very thick Utah serviceberry, scattered oakbrush, and abundant creeping barberry (Mahonia repens). Vegetation on the drier west -facing slope includes Utah juniper (Juniperus osteosperma), shadscale saltbush (Atriplex confertifolia), Osterhout's penstemon (Penstemon osterhoutii), rubber rabbitbrush (Ericameria nauseosa), basin big sagebrush and Indian ricegrass. 2.2 Soil Types The Chevron Clear Creek / Tom Creek Weed Survey project area includes just three main types of soil. The northerly portion of the project area includes part of the Tom Creek drainage and the WestWater Engineering Page 1 of 14 4/21/2008 o Weed Patches Infested Areas TARA VETH. CYOF • VETH. CYOF. BRTE • VETH. CYOF, CANU ® Weed Survey Area BLM Chevron Clear Creek Tom Creek IVNWMP Westwater Engineering March 2008 lower end of the Potts Creek drainage in Sections 24 and 25, T.5 S., R.98 W. This portion of the survey area lies entirely on Grobutte very channery loam, 30-60% slopes. The Grobutte soil formed on mountain sides and hills from mixed colluvium parent material. Characteristic native vegetation is Wyoming big sagebrush, bluebunch wheatgrass (Pseudoroegneria spicata), needle and thread grass (Hesperostipa comata), and Indian ricegrass. South of Section 25, the Tom Creek drainage broadens and the terrain becomes less steep along the creek. The soil here consists of Happle very channery sandy loam, 12-25% slopes. The Happle soil formed on toeslopes and alluvial fans from Green River formation alluvium or colluvium. Characteristic native vegetation on the Happle soil is Wyoming big sagebrush, bluebunch wheatgrass, needle and thread grass, and Indian ricegrass. The steeper areas on either side of Tom Creek are on Grobutte soil as described above. The southern portion of the project area includes short stretches of Clear Creek drainage both above and below the confluence with Tom Creek. The very steep areas lie on Grobutte soil. Gentler slopes near Clear Creek consist of the Happle soil. The almost level flood plain of Clear Creek lies on Cumulic Haploboroll, 1-3% slopes. The Cumulic Haploboroll formed from Wasatch shale or Green River shale alluvium and has a thickened surface horizon from material added during seasonal flooding. Vegetation observed on the Cumulic Haploboroll soil is primarily mountain boxelder and introduced and naturalized New Mexico locust. The New Mexico locust has crowded out most native shrubs one would expect such as skunkbush sumac (Rhus trilobata) and willows (Salix spp.), see Appendix C, Photo 4. 3.0 NOXIOUS WEEDS Noxious weeds are plants that are not native to an area. Most have come from Europe or Asia, either accidentally or as ornamentals that have escaped. Once established in a new environment they tend to spread quickly since insects, diseases and animals that normally control them are absent. Noxious weeds are spread by man, animals, water, and wind. Prime locations for the establishment of noxious weeds include roadsides, sites cleared for construction, areas that are overused by animals or humans, wetlands, and riparian corridors. Subsequent to soil disturbances, vegetation communities can be susceptible to infestations of invasive or exotic weed species. Vegetation removal and soil disturbance during construction can create optimal conditions for the establishment of invasive, non-native species. Construction equipment traveling from weed -infested areas into weed -free areas could disperse noxious or invasive weed seeds and propagates, resulting in the establishment of these weeds in previously weed -free areas (Photo 1). The Colorado Noxious Weed Act (State of Colorado 2005) requires local governing bodies to develop noxious weed management plans. Both the State of Colorado and Garfield County (Garfield County Vegetation Management and Garfield County Weed Advisory Board 2002)maintain a list of plants that are considered to be noxious weeds. The State of Colorado noxious weed list includes three categories. List A species must be eradicated whenever detected (none were found). List 13 species include weeds whose spread should be halted (4 species found). List C species are widespread, but the State will assist local jurisdictions which choose to manage those weeds (2 species found). WestWater Engineering Page 3 of 14 4/21/2008 Photo 1. Potential weed vector — accumulated soil on equipment The Garfield County Weed Advisory Board has compiled a list of 21 plants from the State list considered to be noxious weeds within the county (see Appendix A). Three of those weed species were found in, or near, the project area. The Garfield County Weed Advisory Board has duties to: 1) develop a noxious weed list; 2) develop a weed management plan for designated noxious weeds; and 3) recommend to the Board of County Commissioners (BOCC) that identified landowners submit an integrated weed management plan for their properties. 3.1 Survey Methods Mapped soil types, as published by the Natural Resources Conservation Service (NRCS), U.S. Department of Agriculture (USDA), were reviewed to determine the soil types and vegetation characteristics of the plant site and surrounding property (NRCS 2008). A field inspection of the project area was conducted by WestWater Engineering (WWE) biologists on April 1, 3, 11, and 15, 2008. WWE biologists surveyed the area to identify vegetation communities and to search for, identify, and map noxious weed species. Vegetation types were determined through field identification of plants, aerial photography, and on -the -ground assessments of plant abundance visible during the survey. Identification of plant species was aided by using pertinent published field guides (Whitson et al. 2001, CWMA 2007, Kershaw et al. 1998, Weber 2001). Photographs were taken of the general project location, vegetation, terrain, and other specific biological findings and can be found in Appendix C. Locations of weeds and other features included in this report were recorded with the aid of a handheld global positioning system instrument (GPS) using NAD83/WGS84 map datum, with all coordinate locations based on the Universal Transverse Mercator (UTM) coordinate system in Zone 12S. WestWater Engineering Page 4 of 14 4/21/2008 3.2 Observations The most prevalent listed weeds were common mullein, musk thistle, houndstongue, and downy brome. A problematic (but not listed) weed found in the project area was purple mustard (Chorispora tenella). It was found primarily in disturbed areas and abandoned fields. See Table 1 for the general location of listed weeds. Specific UTM coordinates of weeds can be found in Appendix B. Table 1. Observed Noxious Weed Locations in the Project Area Common Name* Scientific Name USDA Symbol General Location and Comments Bull Thistle" Cirsium vulgare CIVU Very thinly scattered in the Tom Creek drainage bottom. Common Mullein' Verbascum thapsus VETH Very common from dry hillsides to valley bottoms. Scattered thinly on dry mountainsides and occasionally found in thick infestations, especially along riparian areas. See Appendix C, Photo 5. Downy Brome Bromus tectorum BATE Also known as cheatgrass. Can be found throughout much of the project area. Scattered very thinly on steeper mountain side -slopes. Some bottomland in Clear Creek and near the mouth of Tom Creek has denser infestations. Houndstongue Cynog/osswn officinal¢ CYOF Thinly scattered on dry hillsides but can be found in consistently higher concentrations in drainage bottoms. See Appendix C, Photo 6. Musk Thistle" Carduus nutans CANU Scattered among common mullein in lower Tom Creek and in Clear Creek drainages. A few isolated small clusters were found in drier sites. TamariskB Tamarix sp. TARA Also called Salt Cedar. Common along Clear Creek. * Govemment weed listing: Bold - Garfield County, Colorado. Superscript - Colorado State B or C list. 3.3 Treatment and Control of Noxious Weed Infestations Invasive and noxious weeds commonly occur along ditches, creek corridors and adjacent drainages, especially along riparian areas, pipeline routes, disturbed areas such as well pads, and roadsides, and abandoned fields. Areas near Clear Creek and Tom Creek were frequently noted to have infestations of common mullein and houndstongue. Three weed species from the Garfield County list were found in the project area and are indicated by bold type in Table 2. Included in Table 2 are weed life cycle type, state listing category, and recommended control methods for each weed species. Those in regular type were also observed during the survey and are listed by the State of Colorado as noted (CWMA 2007). The locations of these weeds were plotted on the project map (Figure 1). Except for a dense infestation on the east side of Clear Creek, south of the confluence of Tom Creek, downy brome was not plotted as it is very widespread throughout the area. WestWater Engineering Page 5 of 14 4/21/2008 Table 2. Weed Control Methods Common Name* Scientific Name USDA Symbol Type** Control Methods Bull Thistle" Cirsium vulgare CIVU B/A Tilling or, because of the small number of plants, hand grubbing in the rosette stage. Mow at bolting or early flowering; Cut and bag mature seed heads. Herbicides in rosette stage. Common Mullein` Verbascum thapsus VETH B Cut and dig rosettes and bolting plants prior to seed set; re -seed with aggressive grasses. Herbicides may be necessary on dense infestations. Downy Brome Bromus tectorunr BRIE A Eliminate seed source; re -vegetate with native grasses; herbicide treatment in earlyspring and fall. Avoid overgrazing. Houndstongue" Cynoglossurn officinale CYOF B Re -seed with aggressive grasses, remove at flowering or early seed; dig or grub at pre -bud or rosette stage or apply herbicides prior to bud stage. Musk Thistle" Carduus nutans CANU B Tillage or hand grubbing in the rosette stage, mowing at bolting or early flowering; seed head & rosette weevils, leaf feeding beetles, herbicides in rosette stage. Tamarisk" Tamarix sp. TARA P Repeated flooding prevents seedling establishment. Herbicide treatment on basal portion of young plants; cut larger plants and treat with herbicide plus adjuvant within 30 minutes. Plant area with native species to shade out tamarisk. Biological with Diorhabda elongata deserticola, the tamarisk leaf beetle, if available (Tamarisk Coalition 2007). * Govemment weed listing: Bold — Garfield County, Colorado. Superscript - Colorado State B or C list. ** Type: A -annual, B -Biennial, P -Perennial 3.4 Recommended Treatment Strategies It is important to know whether the target is annual, biennial, or perennial to select strategies that effectively control and eliminate the target. Treatment strategies are different depending on plant type, which are summarized in Tables 3 and 4. Herbicides should not always be the first treatment of choice when other methods can be effectively employed. Table 3. Treatment Strategies for Annual and Biennial Noxious Weeds Target: Prevent Seed Production 1. Hand grub (pull), hoe, till, cultivate in rosette stage and before flowering or seed maturity. If seeds develop, cut and bag seed heads. 2. Cut roots with a spade just below soil level. 3. Treat with herbicide in rosette or bolting stage, before flowering. 4. Mow biennials after bolting stage, before seed set. Mowing annuals will not prevent flowering but can reduce total seed production. irota WestWater Engineering Page 6 of 14 4/21/2008 Table 4. Treatment Strategies for Perennials Target: Deplete nutrient reserves in root system, prevent seed production 1. Allow plants to expend as much energy from root system as possible, do not treat when first emerging in spring, but allow growth to bud/bloom stage. If seeds develop, cut and bag if possible. 2. Herbicide treatment at bud to bloom stage or in the fall (recommended, after August 15 when natural precipitation is present). In the fall, plants draw nutrients into the roots for winter storage. Herbicides will be drawn down to the roots more efficiently at this time due to translocation of nutrients to roots rather than leaves. If the weed patch has been present for a long period of time, another season of seed production is not as important as getting the herbicide into the root system. Spraying in fall (after middle August) will kill the following year's shoots, which are being formed on the roots at this time. 3. Mowing usually is not recommended because the plants will flower anyway; seed production should be reduced. Many studies have shown that mowing perennials and spraying the re -growth is not as effective as spraying without mowing. Effect of mowing is species dependent; therefore, it is imperative to know the species and its basic biology. Timing of application must be done when biologically appropriate, which is not necessarily convenient. 4. Tillage may or may not be effective. Most perennial roots can sprout from pieces only ''A" — 1" long. Clean machinery thoroughly before leaving the weed patch. 5. Hand pulling is generally not recommended for perennial species unless you know the plants are seedlings and not established plants. Hand pulling can be effective on small patches but is very labor intensive because it must be done repeatedly. (Sirota 2004) Herbicide treatment with two or more herbicide modes of action in fall (after approximately August 15 when natural precipitation is present) is the best method to control difficult species. Some weeds, particularly annuals and biennials, can develop resistance to herbicides. The ability to quickly develop immunity to herbicides, especially they are used incorrectly, makes it imperative to use the proper chemicals at the correct time in the specified concentration. Most misuse seems centered around excessive use either in frequency or concentration. This results in mostly top kill and an immune phenotype. 3.5 Life Cycle and Management Calendars Best results in the control of tamarisk, houndstongue, bull and milk thistles can be achieved by following the recommended timetable presented in Table 5. Species Houndstongue -B Thistle, Bull - 1st year Thistle, Bull '.B 2nd year Thistle, Musk B l st year , Thistle, Musk tB - 2 year Tamarisk* Table 5. Noxious Weed Biology Type' Jan Feb March 'April May June ''.July Aug,1Sept '',Oct 'Nov Dec rosettes; 4 iprebud • it• flowering, seed set 1 'germination.4 4 I3 ',germination 4 '4 osettes 4 4 bolting !flowering 'eeseed germination rosettes 3 ;rosettes 1+ I� .d' i bolting`Iflowering Semi - leaves flowering, dormancy ; H>, emerge' - seed Set Seed set growth 3 4 3 4 '4 rosettes 4 '4 !flowering, 1 Semi -dormancy ;seed set is A = annual; B = biennial; P = perennial Shaded areas indicate best control timing. * Tamarisk control can be done any time of the year, but is easier when leaves are absent and weather is cooler. (Sirota 2004) WestWater Engineering Page 7 of 14 4/21/2008 Figure 2 is an alternative schedule for life cycle and control of biennial thistles such as bull thistle and musk thistle. It is also appropriate to control common mullein. One column that should be added is cutting of rosettes, which can be done any time during growing. Figure 2. Life Cycle and Management strategies for biennial thistles Herbklde.' Application' ErfesprCe 1 •A -- i?05ktle Nett. AppI; Mowing Botts FWhws Dies Spring Surwner Fall Wirer 1 Year1 Year 2 (Hartzler 2006) 3.6 Commercial Applicator Recommendations A certified commercial applicator is a good choice for herbicide control efforts. Regulations may require a Colorado licensed applicator. An applicator has the full range of knowledge, skills, equipment and experience desired when dealing with tough noxious weeds. Reclamation farming services using multiple seed bin range drills and specialized related equipment is available and should be used for reclamation seeding projects. Common chemical and trade names may be used in this report. The use of trade names is for clarity by the reader. Inclusion of a trade name does not imply endorsement of that particular brand of herbicide and exclusion does not imply non -approval. Certified commercial applicators will decide which herbicide to use and at what concentration according to label directions. Landowners using unrestricted products must obey all label warnings, cautions, and application concentrations. The author of this report is not responsible for inappropriate herbicide use by readers. 3.7 Best Management Practices — Noxious Weeds The following practices should be adopted for any construction project to reduce the costs of noxious weed control. The practices include: WestWater Engineering Page 8 of 14 4/21/2008 • top soil, where present, should be segregated from deeper soils and replaced as top soil on the final grade, a process known as live topsoil handling; • wetland vegetation, if encountered, should be live handled like sod, temporarily watered if necessary, and placed over excavated sub -soil relative to the position from which the wetland sod was removed; • cut-off collars should be placed on all wetland and stream crossings to prevent back washing or draining of important aquatic resources; • in all cases, temporary disturbance should be kept to an absolute minimum; • equipment and materials handling should be done on established sites such as the northern point of origin to reduce area and extent of soil compaction; • disturbances should be immediately re -seeded with the recommended mix in the re - vegetation section; • topsoil stockpiles should be seeded with non-invasive sterile hybrid grasses, if stored longer than one growing season; • prior to delivery to the site, equipment should be cleaned of soils remaining from previous construction sites which may be contaminated with noxious weeds; and • if working in sites with weed -seed contaminated soil, equipment should be cleaned of potentially seed -bearing soils and vegetative debris prior to moving to uncontaminated terrain. In areas with slope greater than 3%, imprinting of the seed bed is recommended. Imprinting can be in the form of dozer tracks or furrows perpendicular to the direction of slope. When utilizing hydro -seeding followed by mulching, imprinting should be done prior to seeding unless the mulch is to be crimped into the soil surface. If broadcast seeding and harrowing, imprinting should be done as part of the harrowing. Furrowing can be done by several methods, the most simple of which is to drill seed perpendicular to the direction of slope in a prepared bed. Other simple imprinting methods include deep hand raking and harrowing, always perpendicular to the direction of slope. Herbicides: Difficult species respond better to an application of a combination of two or more chemical modes of action (biological reason for plant death) rather than one (Boerboom 1999). It has also been found that use of two different groups of chemicals in the same mode of action can increase effectiveness on difficult species, e.g., phenoxys and benzoic acids or carboxylic acids and benzoic acids in a mix. Some come commercially pre -mixed, e.g., Crossbow and Super Weed -be -Gone Max, which are available over the counter. However, some of the most effective herbicides are restricted use and available only for licensed applicators. Professionals or landowners using herbicides must use the concentration specified on the label of the container in hand. Herbicides generally do not work better at higher concentrations. Most herbicide failures observed by WWE are related to incomplete control caused by high concentrations killing top growth before the active ingredient can be transported to the roots through the nutrient translocation process. Most herbicide applications should use a surfactant if directed on the herbicide label or other adjuvants as called for on the herbicide label. WestWater Engineering Page 9 of 14 4/21/2008 Grazing: Grazing should be deferred, in reclaimed areas, until the desired grass species are established. Mechanical: Bull thistle was found in low density and is an example where control could be accomplished mechanically. Effectiveness can be increased by severing the root just below the crown of noxious weeds instead of at greater depths. Alternative Methods: An alternative method, particularly for downy brome infestations and poor or destroyed topsoil, is the application of vesicular-arbuscular mycorrhizal fungi typically referred to as AMF. These fungi, mostly of the genus Glomus are symbiotic with about 80% of all vegetation. Endo-mycorrhizal fungi are associated mostly with grasses and forbs and could be helpful when reclaiming this project. In symbiosis, the fungi increase water and nutrient transfer capacity of the host root system by as much as several orders of magnitude (Barrow and McCaslin 1995). Over-the-counter commercial products, which are better adapted to coating seeds when re- seeding and treating roots of live seedling trees and shrubs at time of planting, come in powder form and are available from many different sources. Some also come in granular form to be spread with seed from a broadcast spreader. The best AMF products should contain more than one species. All Colorado State Forest Salida District tree and shrub plantings include the application of AMF. According to District Forester Crystal Tischler, "AMF is worth it" (Tischler 2006). Most, if not all, Colorado Department of Transportation re-vegetation/re-seeding projects now require use of AMF and BioSol, a certified by-product of the penicillin manufacturing process composed primarily of mycelium. Compacted soils respond well to fossilized humic substances and by- products called humates. These humates, including humic and fulvic acids and humin were formed from pre -historic plant and animal deposits and work especially well on compacted soils when applied as directed. Biological control of widespread infestations, in the project area, using natural insect agents are available for tamarisk (see Table 2) and musk thistle. This later weed may be controlled by the musk and plumeless thistle rosette weevil, Trichosirocalus horridus, and the thistle defoliating beetle, Cassida rubiginosa, which feeds on the foliage of Canada, musk, and plumeless thistles (Sullivan 2004). 4.0 REVEGETATION — RECLAMATION 4.1 Project Area The project area includes a variety of terrain including steep mountain side -slopes, rolling hillsides, and gently sloping bottomland. Successful reclamation of the project area is dependent upon soil type and texture, aspect, slope, proper weed control and re -vegetation with suitable plant species. Based on the soil types, terrain, and the presence of noxious weeds in the project area, successful reclamation is most likely if a seed mix of grasses is used (Tables 6 and 7). This will allow control of noxious weeds while establishing vegetation in the disturbed areas. Two seed mixes WestWater Engineering Page 10 of 14 4/21/2008 x d *4 u a -i-,,-— .0 Plant the Following (10% Total) rn and Both of the Following (15% Each, 30% Total) 2.5 2.8 and One of the Following (20% Total) 3.4 m M and Two of the Following (40% Total) 0.6 0.6 2.7 Form Bunch Bunch U 0 Qa Sod -forming Bunch Bunch C qUq Qa Bunch Season 0 U Warm 0 U 0 U 0 U 000 U U U d S Nezpar, Paloma, Rimrock Viva florets Secar, P-7, Anatone C 3 vcistis� San Luis Scientific Names Achnatherum [Oryzopsisj hymenoides Pleuraphis [Hilariaj jamesii Pseudoroegneria spicata, Agropyron spicatum Elymus lanceolatus ssp. lanceolatus, Agropyron dasystachyum Elymus trachycaulus, Agropyron trachycaulum Poa fendleriana Poa sandbergii, Poa secunda Elymus elymoides, Sitanion hystrix Common Name Indian Ricegrass Bluebunch Wheatgrass Thickspike Wheatgrass Slender Wheatgrass Muttongrass Sandberg Bluegrass Bottlebrush Squirreltail 00 0 0 N N ti 2 d WestWater Engineering Form PLS lbs/acre* Plant Both of the Following (20% Each, 40% Total) 3.4 and One of the Following (20% Total) r M and One of the Following (20% Total) 0.6 and One of the Following (10% Total) r r and One of the Following (10% Total) 0 .-i 0 Sod -forming C Bunch Bunch Bunch 0 ea Bunch Bunch Bunch Bunch 0 0 R ril — 0 U _ 0 U _ 0 U _ 0 U 0 U 0 U 0 U 0 0 0 U 0 U Critana, Schwendimar Secar, P-7, Anatone San Luis Canbar Indian Ricegrass Achnatherum [Oryzopsis] hymenoides Nezpar, Paloma, f Rimrock Scientific Names Elymus lanceolatus ssp. lanceolatus, Agropyron dasystachyum Pseudoroegneria spicata, Agropyron spicatum Elymus elymoides, Sitanion hystrix Elymus trachycaulus, Agropyron trachycaulum Poa canbyi, P. secunda Poa fendleriana Achnatherum [Stipa] lettermanii Achnatherum [Stipa] nelsonii, Stipa columbiana Junegrass Koeleria macrantha, K cristata Common Name Thickspike Wheatgrass Bluebunch Wheatgrass Bottlebrush Squirreltail Slender Wheatgrass Canby Bluegrass Mutton Bluegrass Letterman Needlegrass Columbia Needlegrass 0 0 0 v` s `0 0 0 .0 0 0 0' a. a 0 0 M s 0 0 0 0 O 0 0 0 0 0 0 0 0 m n cr 00 0 0 N_ Page 12 of 14 WestWater Engineering are presented based on soil type and available moisture; one for the gentler, often drier, lower slopes and one for the higher altitude steeper sites. Note: Re -vegetation on very steep or west facing mountain side -slopes may be difficult due to thin soil and harsh climatic conditions. Surface disturbance should be minimized in those areas. For best results and success, the recommended grass mixture reseeding should be done in late autumn. The reseeding rate should be doubled for broadcast application (CNHP 1998). Preferred seeding method is multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and imprinting and waterbars, where applicable. Alternative seeding methods include, but are not limited to: • harrow with just enough soil moisture to create a rough surface, broadcast seed and re - harrow, preferably at a 90 degree angle to the first harrow; • hydro -seeding (most economical in terms of seed cost); and • hand raking and broadcast followed by re -raking at a 90 degree angle to the first raking. • These are not the only means of replanting the site. However, these methods have been observed to be effective in similar landscapes. After desired grasses are established and control of target weed species is successful, then shrubs, forbs and trees can be planted without concern for herbicide damage. Few native forb seeds are available commercially as cultivars. Most are collected from natural populations. Native shrubs and forbs often do not establish well from seed, particularly when mixed with grasses. Past experience has shown that stabilizing the soil with grasses, accomplishing weed control, and then coming back to plant live, containerized woody species in copses has been the most cost effective method for establishing the woody species component of the plant community. For sites where soil disturbance will be temporary, grasses should be drilled after construction activities cease and the equipment removed from the site. After two years of controlling weeds (with herbicides) and allowing the grasses to become established, forbs and woody species should be inter -seeded or hand -planted to increase the diversity and value of the reclamation plantings. 5.0 REFERENCES Barrow, J. R., and Bobby D. McCaslin. 1995. Role of microbes in resource management in arid ecosystems. In: Barrow, J. R., E. D. McArthur, R. E. Sosebee, and Tausch, R. J., comps. 1996. Proceedings: shrubland ecosystem dynamics in a changing environment. General Technical Report, INT -GTR -338, Ogden, Utah: U.S. Department of Agriculture, U.S. Forest Service, Intermountain Resource Station, 275 pp. Boerboom, C. 1999. Herbicide mode of action reference. Weed Science, University of Wisconsin, 5 pp. WestWater Engineering Page 13 of 14 4/21/2008 CNHP. 1998. Native Plant Re -vegetation Guide for Colorado. Colorado Natural Heritage Program, Caring for the Land Series, Vol. III, State of Colorado, Division of Parks and Outdoor Recreation, Department of Natural Resources, Denver, 258 pp. CWMA. 2007. S. Anthony, T. D'Amato, A. Doran, S. Elzinga, J. Powell, I. Schonle, K. Uhing. Noxious Weeds of Colorado, Ninth Edition. Colorado Weed Management Association, Centennial. Garfield County Vegetation Management and Garfield County Weed Advisory Board. 2002. Garfield County Noxious Weed Management Plan. Resolution #2002-94, October 21. Hartzler, B. 2006. Biennial thistles of Iowa. ISU Extension Agronomy. www.weeds.iastate.edu/mgmt/2006/iowathistles.shtml Kershaw, L., A. MacKinnon, and J. Pojar. 1998. Plants of the Rocky Mountains. Lone Pine Publishing, Auburn, Washington. NRCS. 2008. Web Soil Survey, U.S. Department of Agriculture, Natural Resource Conservation Service, URL: http://websoilsurvey.nrcs.usda.gov. Sirota, J. 2004. Best management practices for noxious weeds of Mesa County. Colorado State University Cooperative Extension Tri River Area, Grand Junction, Colorado. URL: http://www.coopext.colostate.edu/TRA/Weeds/weedmgmt.html State of Colorado. 2005. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act, 35-5-1-119, C.R.S. 2003. Department of Agriculture, Plant Industry Division, Denver, 78 pp. Sullivan, P.G. 2004. Thistle control alternatives. Appropriate Technology Transfer for Rural Areas, National Sustainable Agriculture Information Service, Fayetteville, Arkansas, 9 pp. Tamarisk Coalition. 2007. Grand Junction, CO. URL: http://www.tamariskcoalition.org/tamariskcoalition/index.php Tischler, C. 2006. District Forester, Colorado State Forest Service, Salida, Colorado. Personal communication with Bill Clark, WestWater Engineering, Grand Junction, Colorado. Weber, W. A. and R. C. Wittmann. 2001. Colorado Flora: Western Slope, Third Edition. University Press of Colorado, Boulder Colorado. Whitson, T. D. (editor), L. C. Burrill, S. A. Dewey, D. W. Cudney, B. E. Nelson, R. D. Lee, and R. Parker. 2001. Weeds of the West — 9th edition. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie WestWater Engineering Page 14 of 14 4/21/2008 me dw. `t N et J 0 X X X X X X X X X X X X X X X X X X X X X State "C" List X X X State "B" List X X X X X X x X X X X X X X X X Q y .N R J CO X X N d �' :� o J cn 2 LL Q m a a m m d a. a LL LL LL m LL LL LL LL d m LL LL I wLLLL LL 0 LL LL LL LL LL LL LL LL LL LL LL I- LL LL LL LL LL I- F- Species Code ACRE 3 AECY ARM 12 CADR CAAC CANU 4 CEDI 3 CEMA 4 CESO 3 CHLE 80 CIIN d - Q U CYOF ELAN EUES LIDA LIVU 2 LYSA 2 ONAC TAPA 4 TARA Common name Russian knapweed Jointed goatgrass Common (Lesser) burdock Hoary cress, Whitetop Spiny plumeless thistle Musk (Nodding plumeless) thistle Diffuse knapweed Spotted knapweed Yellow starthistle Oxeye daisy tsO U_ L 0 Canada thistle Houndstongue, Gypsyflower Russian olive Leafy spurge Dalmatian toadflax, broad-leaved Yellow toadflax Purple loosestrife Scotch thistle Smallflower tamarisk Salt cedar, Tamarisk Species Acroptilon repens Aegilops cylindrica Arctium minus Cardaria draba Carduus acanthoides Carduus nutans Centaurea diffusa Centaurea maculosa Centaurea solstitialis Chrysanthemum leucanthemum Cichorium intybus Cirsium arvense Cynoglossum officinale Elaeagnus angustifolia Euphorbia esula Linaria dalmatica Linaria vulgaris Lythrum salicaria Onopordum acanthium Tamarix parviflora Tamarix ramosissima c I I L E 0) I 0 4) C Q 0 e/shrub; F = F- C C9 WestWatcr Engineering APPENDIX B Noxious Weed Location UTM's (Garfield County listed weeds in bold) Weed UTM Easting UTM Northing Comments Bull Thistle 12S 0727952 4386277 4 plants 12S 0728221 4385607 1 plant 12S 0728098 4385829 2 plants Common Mullein 12S 0728303 4385550 100 ft long row along road. 12S 0727845 4383099 Few 12S 0727916 4383043 50 ft circle 12S 0727939 4383025 Moderate amount along old road bed. See Appendix D, Photo 7. 12S 0728088 4382934 Few 12S 0727933 4386123 Few 12S 0727954 4386138 Few 12S 0727977 4386089 30 plants. 12S 0728034 4385972 Few 12S 0728158 4385668 20 plants 12S 0728310 4385571 Dense; 100 plants. 12S 0728369 4385571 Dense; 100 plants. 12S 0728602 4385710 5 plants. I2S 0728623 4385739 Dense; 300 plants. Common Mullein / Houndstongue 12S 0727482 4383991 Polygon Start. These are west boundary points. Polygon goes east to Clear Creek 12S 0727479 4383930 12S 0727548 4383898 Cont. 12S 0727541 4383816 Cont. 12S 0727466 4383711 Cont. 12S 0727493 4383669 Polygon Stop 128 0727705 4383795 Polygon Start. North of access road to new pad 12S 0727490 4384050 Cont. 12S 0727580 4384025 Cont. 12S 0727750 4383865 Polygon Stop. 12S 0728145 4383105 Polygon Start. 12S 0728138 4383205 Very dense infestation. 12S 0728075 4383220 Cont. 12S 0728035 4383185 Polygon Stop WestWater Engineering Appendix B — Page 1 4/21/2008 Weed UTM Easting UTM Northing Comments Common Mullein / Houndstongue 12S 0727985 4383505 Polygon Start. 12S 0728181 4383740 Low density but continuous 12S 0728200 4384020 coverage. I2S 0728060 4383755 Polygon Stop. 12S 0728200 4384205 75 ft row on talus slope 12S 0727840 4383168 50 ft. circle Common Mullein / Musk Thistle 12S 0727764 4383251 Moderately thick musk thistle. 12S 0727981 4383020 Few musk thistle Common Mullein / Houndstongue / Musk Thistle 12S 0728266 4383771 Start row. 12S 0728260 4383794 End row. Downy Brome Scattered almost everywhere there is vegetation. Most dense in disturbed areas and in sagebrush. Little to none on talus slopes Houndstongue 12S 0727820 4383194 Few Musk Thistle 12S 0727663 4383827 4 plants 12S 0727679 4383344 Few plants. 12S 0727482 4383991 20 plants 12S 0727568 4384005 7 plants 12S 0728183 4383701 5 plants 12S 0728261 4383841 24 plants 12S 0728275 4383860 50 plants 12S 0728105 4383760 34 plants 12S 0728105 4383540 4 plants 12S 0728232 4385557 2 plants Tamarisk 12S 0727700 4383665 Polygon Start. 12S 0727745 4383635 Cont. 12S 0727710 4383590 Cont. 12S 0727708 4383625 Polygon Stop. 12S 0727695 4383845 10 ft. diameter clump. 12S 0727750 4383570 Linear feature Start. 12S 0727765 4383475 Cont. WestWater Engineering Appendix B — Page 2 4/21/2008 Weed EastMg UTM Northing Comments Tamarisk 12S 727805 4383425 Cont. 12S 727800 4383385 Cont. 12S 727815 4383350 Linear feature Stop. 12S 728340 4382895 Start row. 12S 728355 4382885 Stop row. WestWater Engineering Appendix B — Page 3 4/21/2008 APPENDIX C Additional Photos Photo 2. Clear Creek drainage near the Tom Creek confluence, looking north Photo 3. Steep side -slopes of Tom Creek drainage, looking south WestWater Engineering Appendix C — Page 1 4/21/2008 APPENDIX C Additional Photos Photo 4. New Mexico locust near Clear Creek; Common mullein in foreground Photo 5. Common mullein infestation near Clear Creek WestWater Engineering Appendix C — Page 2 4/21/2008 APPENDIX C Additional Photos Photo 6. First year houndstongue rosette Photo 7. Weeds, such as common mullein, often frequent disturbed areas such as this old roadbed WestWater Engineering Appendix C — Page 3 4/21/2008 Form No. GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg , 1313 Sherman St.. Denver. Colorado 80203 ;303) 8668.3581 CHEVRON USA INC ATTN KENNETH JACKSON PO BOX 36366 HOUSTON, TX 77236- (281) 5614991 PERMIT TO CONSTRUCT A WELL LIC WELL PERMIT NUMBER 67469 -F DIV, 5 WD70 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY SW 1/4 NW 1/4 Section 34 Township 6 S Range 98 W Sixth P M. DISTANCES FROM SECTION LINES 2287 Ft. from North Section Line 1103 Ft. from West Section Line UTM COORDINATES (Meters.Zone:13.NAD83) Easting: Northing: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not ensure that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2, unless approval of a variance. has beer graeted by the State Beard of Exam -Ars of WaterWell C ,rs, uc cr and Pump , sta,talu n Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-90-137(2) on the condition that this well is operated in accordance with the Skinner Ridge substitute water supply plan approved by the State Engineer on August 21, 2008. This well shall not be operated unless it is included in a substitute water supply plan approved by the State Engineer or a plan for augmentation approved by the water court. The subject water supply plan is currently valid through August 20, 2009, and if not extended or if a court approved plan for augmentation is not in operation, diversion of ground water from this well must cease immediately. The well is to be known as the Chevron Central Man Camp Well. 4) The use of ground water from this well is limited to domestic uses including potable water supply for personnel at the Chevron Central Man Camp and commercial uses in accordance with the substitute water supply plan. 5) The pumping rate of this well shall not exceed 50 GPM. 6) The average annual amount of ground water to be appropriated shall not exceed 3.53 acre-feet. 7) The owner shall maik the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 9) This well shall be constructed not more than 200 feet from the location specified on this permit and at least 600 feet from any existing well, completed in the same aquifer, that is not owned by the applicant. NOTE:Unless a completed' Welt Completion Report (GWS -31) and Pump Installation and Test Report (GWS -32) is received by the Division of Water Resources before the expiration date shown below. this permit will expire on the expiration date. An extension of the expiration date may be available. Contact DWR for additional information or refer to the extension request form (GWS -64) available at: http.l,www.waterstate co.usipubs;forms/gws-64 pol' -7' e/Ztytlwg A.PPROVED MJV Receipt No. 3630383A 6'2 State EngmeS7 - By DATE ISSUED 08-28-2008 EXPIRATION" ATE 08-28-2009 Form No GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg_ 1313 Sherman St... Denver. Colorado 80203 (3031 866-3581 CHEVRON USA INC ATTN KENNETH JACKSON PO BOX 36366 HOUSTON, TX 77236- (281) 561-4991 PERMIT TO CONSTRUCT A WELL LIC WELL PERMIT NUMBER 67471 -F DIV. 5 WD70 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY SW 1/4 SE 1/4 Section 22 Township 6 5 Range 98 W Sixth P.M. DISTANCES FROM SECTION LINES 1180 Ft. from South Section Line 2510 Ft from East Section Line UTM COORDINATES (Meters,Zone:13,NAD83) Easting: Northing: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not ensure that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2. unless approval 01 a variance has teen granted by the State Board of Examiners of Water We!f r n truc ton and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-90-137(2) on the condition that this well is operated in accordance with the Skinner Ridge substitute water supply plan approved by the State Engineer on August 21, 2008. This well shall not be operated unless it is included in a substitute water supply plan approved by the State Engineer or a plan for augmentation approved by the water court. The subject water supply plan is currently valid through August 20, 2009. and if not extended or if a court approved plan for augmentation is not in operation, diversion of ground water from this well must cease immediately. The well is to be known as the Chevron Office Complex Well, 4) The use of ground water from this well is limited 10 domestic uses including potable water supply for personnel at the Chevron Office Complex and commercial uses in accordance with the substitute water supply plan. 5) The pumping rate of this well shall not exceed 50 GPM. 6) The average annual amount of ground water to be appropriated shall not exceed 5.63 acre -feel. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate, The owner shall take necessary means and precautions to preserve these markings. 8) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 9) This well shall be constructed not more than 200 feet from the location specified on this permit and at least 600 feet from any existing well, completed in the same aquifer. that is not owned by the applicant. NOTE. Unless a completed Well Completion Report (GWS -31) and Pump Installation and Test Report (GWS -32) is received by the Division of Water Resources before the expiration date shown below, this permit will expire on the expiration date. An extension of the expiration date may be available. Contact DthR for additional information or refer to the extension request form (GWS -64) available at: htlp:r%wvnv water state.couslpubstformstgws-64 pdf,k7:14,4 .-.. e APPROVED MJV Receipt No. 36303838 State Eilgtne ,-- ` DATE DATE ISSUED 08-28-2008 ATE 08-28-2009 Form No. GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial BIdg , 1313 Sherman St., Denver, Colorado 80203 (303) 866-3581 CHEVRON USA INC ATTN KENNETH JACKSON PO BOX 36366 HOUSTON. TX 77236- (281) 561-4991 PERMIT TO CONSTRUCT A WELL LIC WELL PERMIT NUMBER 67473 -F DIV. 5 WD70 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY SW 1/4 NW 1/4 Section 36 Township 5 S Range 98 W Sixth P.M. DISTANCES FROM SECTION LINES 2280 Ft. from South 230 Ft from West Section Line Section Line UTM COORDINATES (Meters,Zone:13,NAD83) Easting: Northing: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not ensure that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action, 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2, unless approval a variance has bean granted by the State Board of Examiners of Water \A/ell Construction and Pump Installation Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-90-137(2) on the condition that this well is operated in accordance with the Skinner Ridge substitute water supply plan approved by the State Engineer on August 21. 2008. This well shall not be operated unless it is included in a substitute water supply plan approved by the State Engineer or a plan for augmentation approved by the water court. The subject water supply plan is currently valid through August 20, 2009. and if not extended or if a court approved plan for augmentation is not in operation, diversion of ground water from this well must cease immediately. The well is to be known as the Chevron Central Production Facility Well. 4) The use of ground water from this well is limited to domestic uses including potable water supply for personnel at the Chevron Central Production Facility and comrnerciat uses in accordance with the substitute water supply plan. 5) The pumping rate of this well shall not exceed 50 GPM. 6) The average annual amount of ground water to be appropriated shall not exceed 0.59 acre-feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 9) This well shall be constructed not more than 200 feet from the location specified on this permit and at (east 500 feet from any existing well, completed in the same aquifer. that is not owned by the applicant. NOTE'Untess a completed Well Completion Report (GWS -31) and Pump Installation and Test Report (GWS -32) is received by the Division of Water Resources before the expiration date shown below. this permit will expire on the expiration date. An extension of the expiration date may be available. Contact DWR for additional information or refer to the extension request form (GWS -64) available at: http.Uwww water state.couslpubstfonnsigws-64.pdt.-'y e, /zany r APPROVED MJV Receipt No 3630383C 7 State Enginee DATE ISSUED 08-28-2008 By EXPIRATION DATE 08-28-2009 Form No GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg_ 1313 Sherman St.. Denver, Colorado 80203 (303) 866-3581 CHEVRON USA INC ATTN KENNETH JACKSON PO BOX 36366 HOUSTON, TX 77236- (281) 561-4991 PERMIT TO CONSTRUCT A WELL LIC WELL PERMIT NUMBER 67475 -F DIV. 5 WD70 DES, BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY NE 1/4 NE 1/4 Section 16 Township 6 S Range 98 W Sixth P.M. DISTANCES FROM SECTION LINES 310 Ft. from North Section Line 230 Ft, from East Section Line UTM COORDINATES (Meters.Zone:13,NAD83) Easting: Northing: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not ensure that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2, unless approval of a aar=_ n.re has beer granted by the State Board of Examiners of Water !^-'e4 Construction and Pump tr•stailatirn Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-90-137(2) on the condition that this well is operated in accordance with the Skinner Ridge substitute water supply plan approved by the State Engineer on August 21, 2008. This well shall not be operated unless it is included in a substitute water supply plan approved by the State Engineer or a plan for augmentation approved by the water court. The subject water supply plan is currently valid through August 20, 2009, and if not extended or if a court approved plan for augmentation is not in operation, diversion of ground water from this well must cease immediately. The well is to be known as the Chevron Valley Man Camp Well. 4) The use of ground water from this well is limited to domestic uses including potable water supply for personnel at the Chevron Valley Man Camp and commercial uses in accordance with the substitute water supply plan, 5) The pumping rate of this well shall not exceed 50 GPM. 6) The average annual amount of ground water to be appropriated shall not exceed 10.71acre-feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer. and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request. 9) This well shall be constructed not rnore than 200 feet from the location specified on this permit and at least 600 feet from any existing well, completed in the same aquifer, that is not owned by the applicant. NOTEUnless a completed Well Completion Report (GWS -31) and Pump Installation and Test Report (GWS32) is received by the Division of Water Resources before the expiration date shown below, this permit will expire on the expiration date. An extension of the expiration date may be available. Contact DWR for additional information or refer to the extension request form (GWS -64) available at, http 'fwww.water state co usrpubstformstgws-64 pd APPROVED MJV State Eng.neer Receipt No 3630383D ,j I / r ✓%>' .- „'';" "Zi _ --may'' By / DATE ISSUED 08-28-2008 EXPIRATION DATE 08-28-2009 Form No. GWS -25 APPLICANT OFFICE OF THE STATE ENGINEER COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg , 1313 Sherman St.. Denver. Colorado 80203 (303) 866-3581 CHEVRON USA INC ATTN KENNETH JACKSON PO BOX 36366 HOUSTON, TX 77236- (281) 561-4991 PERMIT TO CONSTRUCT A WELL LIC WELL PERMIT NUMBER 67476 -F DIV. 5 WD70 DES. BASIN MD APPROVED WELL LOCATION GARFIELD COUNTY SW 1/4 NE 1/4 Section 22 Township 6 S Range 98 W Sixth P.M. DISTANCES FROM SECTION LINES 1860 Ft. from North Section Line 2340 Ft, from East Section Line UTM COORDINATES (Meters,Zone:13.NAD83) Easting: Northing: ISSUANCE OF THIS PERMIT DOES NOT CONFER A WATER RIGHT CONDITIONS OF APPROVAL 1) This well shall be used in such a way as to cause no material injury to existing water rights. The issuance of this permit does not ensure that no injury will occur to another vested water right or preclude another owner of a vested water right from seeking relief in a civil court action. 2) The construction of this well shall be in compliance with the Water Well Construction Rules 2 CCR 402-2, unless approval ef a variance has been granted by the State Beard of Examiners of Water ` ^le'I Crsr . cson end Pump Instaflatinn Contractors in accordance with Rule 18. 3) Approved pursuant to CRS 37-90-137(2) on the condition that this well is operated in accordance with the Skinner Ridge substitute water supply plan approved by the State Engineer on August 21, 2008, This well shall not be operated unless it is included in a substitute water supply plan approved by the State Engineer or a plan for augmentation approved by the water court. The subject water supply plan is currently valid through August 20, 2009. and if not extended or if a court approved plan for augmentation is not in operation, diversion of ground water from this well must cease immediately. The well is to be known as the Chevron Stage III Production Facility Well. 4) The use of ground water from this well is limited to domestic uses including potable water supply for personnel al the Chevron Stage III Production Facility and commercial uses in accordance with the substitute wafer supply plan. 5) The pumping rate of this well shall not exceed 50 GPM. 6) The average annual amount of ground water to be appropriated shall not exceed 0.59 acre-feet. 7) The owner shall mark the well in a conspicuous place with well permit number(s), name of the aquifer, and court case number(s) as appropriate. The owner shall take necessary means and precautions to preserve these markings. 8) A totalizing flow meter must be installed on this well and maintained in good working order. Permanent records of all diversions must be maintained by the well owner (recorded at least annually) and submitted to the Division Engineer upon request 9) This well shall be constructed not more than 200 feet from the location specified on this permit and at least 600 feet from any existing well, completed in the same aquifer. that is not owned by the applicant. NOTEUnless a completed Well Completion Report (GWS -31) and Pump Installation and Test Report (GWS -32) is received by the Division of Water Resources before the expiration dale shown below, this permit will expire on the expiration date An extension of the expiration date may be available. Contact DWR for additional information or refer to the extension request form (GWS -64) available at http ilww,w.water state co usipubs formsrgws-54 pdfd .�fv 'S/'2 te ,, { `I'2 APPROVED MJV Receipt No. 3630383E State Enginear-f DATE ISSUED By 08-28-2008 EXPIRATION DATE 08-28-2009 6/18/2008 Sent via e-mail and 1" Class Mail Colorado Division of Water Resources Attention: Craig Lis, P.E. 1313 Sherman St., Rm. 818 Denver, CO 80203 Re: Substitute Water Supply Plan for Chevron U.S.A. Inc. Water Court Application 08CW058 Dear Mr. Lis: The purpose of this letter report is to provide engineering background for and request approval of a Substitute Water Supply Plan submitted on behalf of Chevron U.S.A. Inc. (Chevron) concerning the water supply for five facilities associated with the Skinner Ridge natural gas development project. The facilities are located along Clear Creek, generally within Townships 5 and 6 South, Range 98 West of the 6th Principal Meridian, all within Garfield County, Colorado. On May 29, 2008 Chevron submitted a Water Court Application to the Colorado Garfield County District Court 9th Judicial District. The submittal was accepted and assigned Case No. 08CW058 (attached). Chevron desires to divert water in accordance with the plan outlined in Case No. 08CW058 prior to the issuance of a Decree. Total out -of -priority stream depletions attributable to the plan are estimated to total 2.1 acre-feet/year in a dry year. Chevron is currently in the process of obtaining a Special Use Permit (SUP) from Garfield County (County) associated with the Skinner Ridge project. The County will not issue the permit until "proof of adequate water supply" has been demonstrated. In order to fulfill this County SUP requirement and in the interest of proceeding with planned construction activities, Chevron requests approval from the State Engineer to operate under a Substitute Water Supply Plan pursuant to Colorado Revised Statute 37-92-308, subsection (4). PROJECT DESCRIPTION Refer to Figure 1 for the locations of the water diversion structures mentioned herein. The potable water supply for the Skinner Ridge facilities will be obtained from shallow wells completed in the Clear Creek alluvial aquifer at depths not to exceed 200 R. Clear Creek is tributary to Roan Creek which is tributary to the Colorado River. The five facilities, include the following: Central Man Camp, Valley Man Camp, Office Complex, Central Production Facility, and Stage III Production Facility. All facilities and wells will be located on lands owned by Chevron except for the Stage III Production URS Corporation 713 Cooper Avenue, Suite 100 Glenwood Springs, CO 81601 Tel: 970.384.4736 Fax: 970.945.9182 www.urscorp.corn Page 2 of 4 Facilities which will be on lands owned by Shell and made available for Chevron's use under a Surface Use Agreement (attached). Surface water availability in the Roan Creek basin varies widely from year to year. It is expected that in years of' average to below average availability that senior irrigation rights will place calls on Roan Creek. This can occur as early as April in a dry year. Chevron plans to augment out -of -priority diversions from the water supply wells with releases to Clear Creek from a pond located approximately 6 miles upstream along Clear Creek from the confluence with Roan Creek. The pond has already been constructed and has been lined. The appropriation date associated with all structures is March 13, 2007. WATER SUPPLY WELLS The maximum pumping rate from any of the wells will not exceed 50 gallons per minute (gpm). This is based on a pumping test performed on May 9, 2007 on an existing well located near the Office Complex where a yield was estimated at 50 gpm by Geotechnical Engineering Group, Inc. Treatment of raw water diverted from the wells is expected to be by individual reverse osmosis treatment systems installed at each well or by other systems capable of producing potable water that meets Colorado drinking water standards. The monthly diversion rate from the wells, on average, will be constant throughout the year. The wells are only intended to supply potable water needs which will remain constant. For this reason a delayed depletions analysis was not performed as the depletions to the stream system are expected to reach equilibrium within 1-2 years. Depletions are estimated to be 10% of diversions to account for losses attributable to a septic/leach field that will be installed at each facility. For the purposes of the augmentation plan the depletions are assumed to be instantaneous, i.e. depletions to the stream will begin as soon as groundwater withdrawals from the wells begin. The legal descriptions of the wells are provided below in Table 1. TABLE 1 Water Supply Wells - Legal Descriptions Supply Section Township, Range Dist. From Section Lines Central Man Camp SW Y., NW' , Sec. 34 T. 6S, R. 98W 2287' From the North Sec. Line 1,103' From the West Sec. Line Valley Man Camp NE %, NE %, Sec. 16 T. 6S, R. 98W 310' From the North Sec. Line 230' From the East Sec. Line Office Complex SW %, SE %, Sec. 22 T. 6S, R. 98W 1,180' From the South Sec. Line 2,510' From the East Sec. Line Central Production Facility SW Y., NW34, Sec. 36 T. 5S, R. 98W 2280' From the North Sec. Line 230' From the West Sec. Line Stage 01 Production Facility SW %, NE'/,, Sec. 22 T. 6S, R. 98W 1,860' From the North Sec. Line 2,340' From the East Sec. Line AUGMENTATION POND Page 3 of 4 Out of priority depletions caused by water consumption at the man camps, office complex, and production facilities will be offset by releases from a recently constructed pond. Chevron plans to utilize the pond for other commercial and industrial uses in addition to augmentation for the water supply wells. These additional uses will include construction (including gas well drilling and completion work) and dust suppression. The pond is located on the east bank of Clear Creek near the confluence of Clear Creek and Tom Creek on land owned by Chevron. The pond filling source is a pump and pipeline system also located on the east bank of Clear Creek with a maximum filling rate of 1.0 cfs. The pond will also be supplemented with water hauled by tank trucks from the Colorado River and/or Roan Creek when "free river" conditions allow. The locations of the pond and the point of diversion associated with the pond filling source are detailed below in Table 2. TABLE 2 Water Supply Pond - Legal Descriptions Feature Section Township, Range Dist. From Section Lines Point of Diversion SE 1/4, NE 1/4, Sec. 35 T. 5S, R. 98W 1,490' From the North Sec. Line 100' From the East Sec. Line Pond SW 1/4, NW 1/4, Sec. 36 T. 5S, R. 98W 1,785' From the North Sec. Line 250 From the West Sec. Line The pond has been lined to prevent infiltration of groundwater into the pond and/or osses due to seepage from the pond. Chevron has personnel on-site during normal business hours to make releases if so ordered by the Water Commissioner. Chevron anticipates working with the Water Commissioner to develop a scheduled time for the releases. Chevron will make releases and provide documentation to the Water Commissioner. The embankment length is 300 feet with a maximum height above natural grade of less than 10 feet corresponding to a maximum storage capacity of 15.2 acre-feet of active storage and a maximum surface area of 1.6 acres. Refer to Table 3 for the stage -volume and stage -area relationships for the pond. Figures 2 and 3 display the information summarized in Table 3. SUBSTITUTE WATER SUPPLY PLAN The estimated water demands for the five facilities are enumerated in Table 4. At full build out the combined occupancy total for the two man camp facilities will be 160. Personnel present at the remaining three operational facilities will total 120. The total annual diversions from the five wells is estimated to be 21 acre-feet. This represents a total average diversion rate of 13.1 gpm. All facilities will treat resulting wastewater with a septic tank and leach field system. The net depletions to the Page 4 of 4 stream system are estimated to be 10% for this type of use and wastewater treatment system for a total of 2.1 acre-feet per year. Table 5 presents the pond operation schedule. A dry year scenario was assumed. A 6% transit loss (1% per mile of stream) was used to account for stream losses between the pond and the furthest downstream well. In addition to these depletions evaporation from the augmentation pond surface will also take place, however these depletions do not need to be augmented since the pond is an off -channel structure. Refer to Table 6 for the monthly evaporation rate from the pond surface. Column 6 of Table 5 demonstrates that the pond is adequately sized to make releases to Clear Creek during a dry year call scenario in which a call is in place on Roan Creek in April and then from June through October. It is assumed that even in a dry year water will be available to divert from Clear Creek in May for a one-time filling of the pond. The information summarized in this letter report is consistent with Case No. 08CW058 and constitutes Chevron's formal request to operate under a Substitute Water Supply Plan. Sincerely, John Sikora, P.E. Enclosures Jared Walter, Project Engineer cc: Julie Justus Kenneth Jackson Sally Cuffin, P.E. Division 5 Substitute Water Supply Plan Notification List (52) -t: t''!" ✓{ t Jt�Zfia 6+`ivylt } ty ✓a', if f115 11 30i . Legend. xy'n `_ �S ; y it tF� 'liY e �'«. i 2y1, • Y qW{ ��v Y ','yy��k fc ✓t:/we ✓�{k 1 4QY% Y \ a,�tr,z 4}7 _ ✓nn•p nC. -a 1 Points of Diversion �on +' .� POW Fresh water n✓ .3 Feeder cer Pt ell a"sl �e. p r., )Z 'i 1 4 <)YFIHI'i ? ;1 .4. k, y.-47 ffE ; rt1t i✓ tOlk w +L �yF+ Y i 3 mo.'s 'fit Se �5 Fresh Water Pond 0 2 00Q 4 000 8 000 . Ifs y4v .� Feet Chev 1 .0,10- Vet I„ , lPr du�,tl n q, 2r :a A• IxE> 364, ,�7ly(t3 l t t'1 9t`` '{t A4 %d- � t,.;r'f SChevroniFr sly _. y i �� � , ' f c . 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FIGURE 1 Chevron Man Camp, Office Complex and Production Facility Water System URS Corporation 713 Coonue, Suite 100 Glenwood 713 SSprinprings, CO 81601 TEL: 970.384.4736 FAX: 970.945.9182 TABLE 3 Chevron Augmentation Pond Stage (ft) Elevation (ft) Area (Acres) Volume (Acre-feet) 12.5 6002.5 1.6 15.2 12.0 6002.0 1.6 14.4 11.0 6001.0 1.5 12.8 10.0 6000.0 1.5 11.3 9.0 5999.0 1.4 9.9 8.0 5998.0 1.3 8.6 7.0 5997.0 1.3 7.3 6.0 5996.0 1.2 6.1 5.0 5995.0 1.1 4.9 4.0 5994.0 1.1 3.8 3.0 5993.0 1.0 2.8 2.0 5992.0 0.9 1.8 1.0 5991.0 0.9 0.9 0.0 5990.0 0.8 0.0 Note: Stage -area relationship established based on Washington Group, International (WGI) plan view drawing (sheet 003-12-11-111-003) and subsequent volumes were calculated. URS Corporation 4/15/08 TABLE 4 Chevron Clear Creek Skinner Ridge Facilities Estimated Water Use Month Central Man Camp (1) Valley Man Camp (2) Diversions Office '- Complex (3) Central Production Facility (4) Stage III Production Facility (5) Total (6) Depletions (7) Jan 030 0.91 0.48 0.05 0.05 1.79 0.18 Feb 0.27. 0.82 0.43 0.04 0.04 1.80 0.16 Mar 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Apr 0.29 0.88 0.46 0.05 0.05 1.73 0.17 May 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Jun 0.29 0.88 0.46 0.05 0.05 1.73 0.17 Jul 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Aug 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Sep 0.29 0.88 0.46 0.05 0.05 1.73 0.17 Oct 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Nov 0.29 0.88 - 0.48 0.05 0.05 1.73 0.17 Dec 0.30 0.91 0.48 0.05 0.05 1.79 0.18 Total 3.53 10.71 5.63 0.59 0.59 21.05 2.10 Notes: (1) Estimated diversions required for the Central Man Camp located in Sec. 34, Twn. 6 South, Range 98 West of the 6th P.M. - Water Demand = 80 gal/person/day. Capacity = 40 personnel. - Average Diversion Rate = 2.2 gpm. Peak Diversion Rate = 50 gpm. (2) Estimated diversions required for the Valley Man Camp located in Sec. 16, Twn. 6 South, Range 98 West of the 6th P.M. - Water Demand = 80 gal/person/day. Capacity = 120 personnel. -Average Diversion Rate = 6.6 gpm. Peak Diversion Rate = 50 gpm. (3) Estimated diversions required for the Office Complex located in Sec. 22, Twn. 6 South, Range 98 West of the 6th P.M. - Water Demand = 50 gaVpersonlday. Capacity = 100 personnel. -Average Diversion Rate = 3.5 gpm. Peak Diversion Rate = 50 gpm. (4) Estimated diversions required for the Central Production Facility located in Sec. 36, Twn. 5 South, Range 98 West of the 6th P.M. - Water Demand = 50 galperson/day. Capacity = 10 personnel. - Average Diversion Rate = 0.4 gpm. Peak Diversion Rate = 50 gpm. (5) Estimated diversions required for the Stage III Facility located in Sea. 22, Twn. 6 South, Range 98 West of the 6th P.M. - Water Demand = 50 gal/person/day. Capacity = 10 personnel. - Average Diversion Rate = 0.4 gpm. Peak Diversion Rate = 50 gpm. (6) = Column (1) + Column(2) + Column (3) + Column (4)+Column (5) (7) = 10% of Column (6). The depletions are assumed to be constant to Clear Creek due to the constant nature of the potable water demand, therefore a delayed depletions schedule was not developed. URS Corporation 4115ro8 TABLE 5 Chevron Clear Creek Skinner Ridge Facilities Dry Year Augmentation Pond Operation Schedule Month Depletions (1) Gross Evaporation (2) Roan Creek Call (3) Reservoir Release (4) Reservoir Inflow (5) Reservoir Volume (6) Jan 0.18 0.14 No 0.00 0.00 7.50 Feb 0.16 0.16 No 0.00 0.00 7.34 Mar 0.18 0.26 No 0.00 0.0D 7.08 Apr 0.17 0.41 Yes 0.18 0.00 6.49 May 0.18 0.53 No 0.00 6.11 12.07 Jun 0.17 0.82 Yes 0.18 0.00 11.07 Jul 0.18 0.81 Yes 0.19 0.00 10.07 Aug 0.18 0.70 Yes 0.19 0.00 9.18 Sep 0.17 0.50 Yes 0.18 0.00 8.50 Oct 0.18 0.34 Yes 0.19 0.00 7.97 Nov 0.17 0.19 No 0.00 0.00 7.78 Dec 0.18 0.14 No 0.00 0.00 7.64 Total 2.10 5.00 - 1.11 6.11 • Notes: (1) = Column (7), Table 4 (2) = [Monthly Unit Evaporation Rate] x [Pond Surface Area] - Monthly Unit Evaporation Rate determined from Table 6, Column (2). - Pond Surface Area determined from Figure 2 using storage volume from previous month. (3) Assumes a dry year scenario for senior irrigation call on Roan Creek. (4) If Column (3) = Yes: = Column (2) + 6% (1% transit loss per mile for 6 miles) If Column (3) = No: =0 (5),Required inflow from Clear Creek. (6) = [Previous Month Pond Volume] - [Column (2) + Column (4)] + Column (5) In a dry year the reservoir is only filled in May during spring runoff. Either a call is place on Roan Creek of the filling source (Clear Creek) is dry during the rest of the year. URS Corporation 4/15/08 TABLE 6 Monthly Unit Evaporation Month Evaporation Distribution (1) Unit Evaporation (ft) (2) Jan 3.0% 0.11 Feb 3.5% 0.12 Mar 5.5% 0.20 Apr 9.0% 0.32 May 12.0% 0.43 Jun 14.5% 0.52 Jul 15.0% 0.53 Aug 13.5% 0.48 Sep 10.0% 0.36 Oct 7.0% 0.25 Nov 4.0% 0.14 Dec 3.0% 0.11 Total 100.0% 3.57 Notes: (1) Annual evaporation distribution for elevations below 6,500 ft based on Senate Bill 120 guidelines. (2) Evaporation in acre-feet/acre based on annual evaporation rate of 42.7 inches determined from NOAA NWS 33. URS Corporation 4/15/08 LL 0 Chevron Fresh Water Pond Water Level (ft) Meter Readings Chevron Central Man Camp Well E (gallons) Chevron Office Complex Well (gallons) Chevron Stage III Production Facility Well (gallons) Chevron Valley Man Camp Well (gallons) Chevron Central Production Facility Well (gallons) 2 n Bond No.: 6551701 RECLAMATION (REVEGETATION) BOND KNOW ALL MEN BY THESE PRESENTS, that the undersigned Chevron U.S.A. Inc. as Principal and Safeco Insurance Company of America as Surety are held and firmly bound unto Board of County Commissioners of Garfield County, Colorado, as Obligee in the penal sum of Thirty Four Thousand, and No /00 ($34,000.00) for the payment of which, well and truly to be made the said principal and the said Surety, bind themselves, their heirs, executors, administrators, successors and assigns, jointly and severally, firmly by these presents. WHEREAS, the Principal has applied for a Special Use Permit for an "Industrial Support Facility" for the Central Production Facility and the Garfield County Vegetation Director has required a Revegetation bond securing Principal's performance under the "Garfield County Weed Management Plan" and the Principal's "Special Use Pennit Application" as a condition of approval of the Special Use Permit for an Industrial Support Facility, all as more specifically set out in the Garfield County's Building and Planning Department report dated March 13, 2008. NOW, THEREFORE, if such permit is granted and if the Principal shall faithfully perform its duties under the terms of the permit, then this obligation shall be null and void, otherwise to remain in full force and effect. PROVIDED, that if Surety shall so elect, this bond may be cancelled as to subsequent liability by giving thirty (30) days notice in writing to both the Principal and Obligee. IN WITNESS WHEREOF, the Principal and Surety have hereunto set their hands and seals this 12th day of June, 2008. The effective date of this bond is June 12, 2008. (Seal) (Seal) ®p. Aneo SST sta4e TEUs 1.,rany Safeco Insurance Company of America Chevron U.S.A. Inc. Jul ijf Mo, Attomey-in-fact CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT State of California County of San Francisco On .T1iNF 1 z. zona before me, Marina Tapia, Notary Public, personally appeared Julia Mo who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in hie/her/their authorized capacity(tes), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. 1 certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS my hand and official seal. (seal) Is MARINATAPIA 1 o ?er COMM. #1728314 NOTARY PUBLIC- CALIFORNIA LOS ANGELES COUNTY w Comm. Eq�6es March ck zon Signature ` -)ta/, Marina Tapia, Notary Public Saloco Insurance Company of America POWER General Insurance Company of Amerfea Sakai Plaza OF ATTORNEY Seattle, WA 98185 KNOW ALL BY THESE PRESENTS: No. That SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA, cads a Washington corporation, does each hereby appoint ••"""""^TOM ORANIGAN; JOHN T.LETTIERI; JULIA MO; PATRICK T. MOUGHAN; San Francisco, California 12507 its true and lawful allomey(s)-in-fad, with full authority to execute on its behalf fidelity and surety bonds or undertakings and other documents of a similar character issued in the course of its business, and to bind the respective company thereby. IN WITNESS WIIEREOF, SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA have each executed and attested those presents APAr tem this 16th day of August STEPHANIE DALEY-WATSON SECRETARY 2007 TIM MIKOLAJEWSKI, SENIOR VICE-PRESIOENT, SURETY CERTIFICATE Extract from the By -Laws of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA: 'Article V, Section 13. - FIDELITY AND SURETY BONDS ... the President, any Vice President, the Secretary, and any Assistant Vice President appointed for that purpose by the officer in charge of surety operations, shall each have authority to appoint individuals as attomeys4o1act or under other appropriate Utes with authonty to execute an behalf of the company fidelity and surety bonds and other documents of similar character Issued by Iho company in the course of its business... On any instrument making or evidencing such appointment. the signatures may be affixed by facsimile. On any instrument conferring such authority or on any bond or undertaking of the company, the seal, or a facsimile thereof, may be impressed or affixed or in any other manner reproduced; provided, however, that the seal shall not be necessary to the validity of any such instrument or undertaking.' Extract from a Resolution of the Board of Directors of SAFECO INSURANCE COMPANY OF AMERICA and o1 GENERAL INSURANCE COMPANY OF AMERICA adopted July 28, 1970. to any certificate executed by the Secretary or an assistant secretary of the Company setting out, (i) The provisions of Article V, Section 13 of the By -Laws, and (u) A copy of the power-of-attomey appointment, executed pursuant thereto, and (iii) Certifying that said power-of-attomey appointment is in full force and effect, the signature of the certifying officer may be by facsimile, and the seal or the Company rnay be a facsimile thereof 1, Stephanie Daley -Watson , Secretary of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA, do hereby cedify that the foregoing extracts of the By -Laws and of a Resolution of the Board of Directors of these corporations. and of a Power of Attorney issued pursuant thereto, are true and correct, and that bosh the By -Laws. the Resolution and the Power of Attorney are still In full force and effect. IN WITNESS WHEREOF, I have hereunto set my hand and affixed the facsimile seal of said corporation This 12TH S-097409 0m5 COM' F COMM et, SEAL taxaemu*� day of JUNE • 200$_ STEPHANIE DALEY-WATSON, SECRETARY Salea>?t and the Safety logo aro regislerod trademarks of Safeco Comoralion. WED PDF CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT CCO<``46416Q6c6vrN4-0-66V.'F,OCCWOF.Onocz`r'. 4VeCazr..CCw�' :oeeere46e0eca. :r.FRen 6.66..e'C.Zflacdec State of California County of Co.,+r-A- (c)S 1 On b/(4(' J0-2 before me, Anotrew 7:: frei.et".rOM P Lt•b Oat personally appeared Here Insert Name and Title ol ma ()Neer Nane(s) of Signer(s) Yr2a c_Lza Ld ANDREW A. TOMERSON ;R� Commission* 1632640 z `a.,- t _ ;�r+.� Notary Public - California t r rr Contra Costa County MyComm. ExphesJan20,201 Place Notary Seal Above who proved to me on the basis of satisfactory evidence to be the persons) whose name(e) is/ere subscribed to the within instrument and acknowledged to me that ke/she/they executed the same in his/her/Their authorized capacity(ies), and that by his/her/their signatures) on the instrument the person(s)? or the entity upon behalf of which the person(s):acted, executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS my hand and official seal. Signature OPTIONAL .441' Signature of Notary Public Though the information below is not required by law, it may prove valuable to persons relying on the document and could prevent fraudulent removal and reattachment of this form to another document Description of Attached Document Title or Type of Document: p e C La pytO. t ' o _ !!S _ II Document Date: 6 /) 2.10"2:, Number of Pages: Signer(s) Other Than Named Above: Pr • Capacity(ies) Claimed by Signer(s) I�acka.d rI• Signers Name: —J -.J • 1 1 r Signer's Name: ❑ Individual j9 S ri r tir..c 0 Individual )Corporate Officer—Title(s):) r-e_gs.A—•❑CorporateOfficer—Title(s): ❑ Partner — 11 Limited ❑ General 0 Partner — 0 Limited 0 General ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator ❑ Other Signe Igt Representing havrz._ 1.4 jig- Tr,c- PIGHTTHUMBPRINT OFSINNER Top of Thumb here ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator ❑ Other: Signer Is Representing RIGHTTHUMBPRINT OF SIGNER Top of thumb here 457 IV Ai AT a/ ae 62007 National Notary Association. 0350 Do Soto Ave., P.D.eox 2402 •Chatsvcrth.CA 91313-2402. vwNWationalNolayorg Item #5907 Reorder,C II TollFree 1-800-876.6827 Bond No.: 6551651 RECLAMATION (REVEGETATION) BOND KNOW ALL MEN BY THESE PRESENTS, that the undersigned Chevron U.S.A. Inc. as Principal and Safeco Insurance Company of America as Surety are held and firmly bound unto Board of County Commissioners of Garfield County, Colorado, as Obligee in the penal sum of Thirty One Thousand Two Hundred Fifty and 00/00 ($31,250.00) for the payment of which, well and truly to be made the said principal and the said Surety, bind themselves, their heirs, executors, administrators, successors and assigns, jointly and severally, firmly by these presents. WHEREAS, the Principal has applied for a Special Use Permit for an "Industrial Support Facility" for the Central Production Facility and the Garfield County Vegetation Director has required a Revegetation bond securing Principal's performance under the "Garfield County Weed Management Plan" and the Principal's "Special Use Permit Application" as a condition of approval of the Special Use Permit for an Industrial Support Facility, all as more specifically set out in the Garfield County's Building and Planning Department report dated March 13, 2008. NOW, THEREFORE, if such permit is granted and if the Principal shall faithfully perform its duties under the terms of the permit, then this obligation shall be null and void, otherwise to remain in full force and effect. PROVIDED, that if Surety shall so elect, this bond may be cancelled as to subsequent liability by giving thirty (30) days notice in writing to both the Principal and Obligee. IN WITNESS WHEREOF, the Principal and Surety have hereunto set their hands and seals this 8'h day of April, 2008. The effective date of this bond is April 8, 2008. (Seal) (Seal) Chevron U.S.A. Inc. Ass; s M.vt Trews tl �rety Safeco Insurance Company of America Mo, Attorney -In -Fact CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT State of California County of San Francisco On APRIL 8, 2008 before me, Simone Gerhard, Notary Public, personally appeared Julia Mo who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS my hand and official seal. 1 SIMONE GERHARD [ Commission # 1784570 Notary Public - Callfornla Los Angeles County my Comm. E=Irrec 9,2011 3 Y � d KNOW ALL BY THESE PRESENTS: That SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA, each a Washington corporation, does each hereby appoint *********'****TOM BRANIGAN; JOHN T. LETTIERI; JULIA MO; PATRICK T. MOUGHAN; San Francisco, California************** POWER OF ATTORNEY No. Safeco Insurance Company of America General Insurance Company of America Safeco Plaza Seattle, WA 98185 12507 its true and lawful attorney(s)-in-fact, with full authority to execute on its behalf fidelity and surety bonds or undertakings and other documents of a similar character issued in the course of its business, and to bind the respective company thereby. IN WITNESS WHEREOF, SAFECO INSURANCE COMPANY OF AMERICA and GENERAL INSURANCE COMPANY OF AMERICA have each executed and attested these presents this 16th day of August STEPHANIE DALEY•WATSON,SECRETARY 2007 TIM MIKOLAJEWSKI, SENIOR VICE-PRESIDENT, SURETY CERTIFICATE Extract from the By -Laws of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA: "Article V, Section 13. - FIDELITY AND SURETY BONDS ... the President, any Vice President, the Secretary, and any Assistant Vice President appointed for that purpose by (he officer in charge of surety operations, shall each have authority to appoint individuals as attorneys -in -fad or under other appropriate titles with authority to execute on behalf of the company fidelity and surety bonds and other documents of similar character issued by the company in the course of its business... On any instrument making or evidencing such appointment, the signatures may be affixed by facsimile. On any instrument conferring such authority or on any bond or undertaking of the company, the seal, or a facsimile thereof, may be impressed or affixed or in any other manner reproduced; provided, however, that the seal shall not be necessary to the validity of any such instrument or undertaking." Extract from a Resolution of the Board of Directors of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA adopted July 28, 1970. "On any certificate executed by the Secretary or an assistant secretary of the Company setting out, (0 The provisions of Article V, Section 13 of the By -Laws, and (u) A copy of the power-of-attomey appointment. executed pursuant thereto, and (iii) Cedifying that said power-of-attorney appointment is in full force and effect. the signature of the certifying officer may be by facsimile, and the seal of the Company may be a facsimile thereof." I, Stephanie Daley -Watson , Secretary of SAFECO INSURANCE COMPANY OF AMERICA and of GENERAL INSURANCE COMPANY OF AMERICA do hereby certify that the foregoing extracts of the By -Laws and of a Resolution of the Board of Directors of these corporations, and of a Power of Attorney issued pursuant thereto, are true and correct, and that both the By -Laws, the Resolution and the Power of Attomey are still in full force and effect. IN WITNESS WHEREOF, I have hereunto set my hand and affixed the facsimile seal of said corporation this 8TH day of APRIL 5-0974/0S 4(05 2008 4t pAe u, J i f STEPHANIE DALEY-WATSON, SECRETARY Safeoaw and the Safeco logo are registered trademarks of Safeco Corporation. WEB PDF CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT •y•-<.;•• r -.<a< a< �s n :'s i<ri< aysa< a<�v. Wr ,nei aa� r' > - 4crk ' SCt mom• ave,< <r nnr,nyik,< State of California County of C0 t -= Ca s -t-d. On 11-/Q J32 before me, ate personally appeared i Art dr 1 c>rerso,� Here Insert Name and Title of the Officer 2�r n . Far ri rr Pt<.b III Name(s) of Signer(s) ANDREW A TOMERSON Commhgon # 1632640 [z Notary Public - California Contra Costa County My Comm. Explles Jan 20, 201 Place Notary Seal Above who proved to me on the basis of satisfactory evidence to be the person(s)-whose name(* is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacityfies), and that by his/her/their signature(e) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct. WITNESS my hand and official seal. SignaturekA2-'0'(n OPTIONAL Signature of Notary Public Though the information below is not required by law, it may prove valuable to persons relying on the document and could prevent fraudulent removal and reattachment of this form to another document. Description of Attached Document / /vrN/� /yam iI` e G y 6t i'h Ct e; o+--- C 1`e. v e e �C�,� r c, 1 Title or Type of Document: VI � ✓/ Document Date: Y -/g/ 6 .2 Number Number of Pages: Signer(s) Other Than Named Above: 1\3 -,S1 Capacity(les) Claimed by Signer(s) Signer's Name: -36 ^r. J • ma c l.a dd ❑ Individual Ass irit.-+1- g Corporate Officer — Title(s): / r k • ❑ Partner —0 Limited 0 General ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator ❑ Other: Si nerIs Representing: C' h g v ra.. U, C. , C . RIGHTTHUMBPRINT OF SIGNER Top of thumb here Signer's Name: ❑ Individual ❑ Corporate Officer—Title(s): ❑ Partner — ❑ Limited ❑ General ❑ Attorney in Fact ❑ Trustee ❑ Guardian or Conservator ❑ Other: Signer Is Representing: RIGHT THUMBPRINT OF SIGNER Top of thumb here vG�1V.Gv4�V.Gbh.h.Sv<�q.:Sv<a'gs&,<v✓✓C.a%.S VS`%p`%S`V1.G`V.h✓.S�V.G�{�V.�^�0.%4�=G V4vYuA✓#5907 eorder%q%SVG�e1-80 d.<V662 -'org Item #5907 Reorder:Call Toll -Free 1.800-8]6-662] ©2007 National Notary Association• 9350 De Solo Ave., P.O. Box 2402 •Chatsworth, CA 91313-2402• .NationalNota