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Home My WebLink About1.2 ApplicationPVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 11- Sensitive Area Survey 9.07.04 (10) July 16, 2007 Mr. Fred Jarman Director Garfield County Building and Planning Department 108 8th Street, 4th floor Glenwood Springs, CO 81601 Dear Mr. Jarman, Please find below relevant sections of the Garfield County Zoning Resolution in regards to the Crawford Trail Gathering Pipeline. 9.07.04 (10) "Sensitive Area Survey: List the types and areas of concern along the pipeline right-of-way, such as: sensitive plant populations, cultural, archeological, paleontological resources and wetlands identified during preconstruction environmental surveys, if applicable." 9.07.06 (3) a. notes "Pipeline operations shall be located in a manner to minimize their visual impact and disturbance of the land surface. a. The location of right-of-way shall be away from prominent natural features and identified environmental resources." 9.07.06 (5) "In no case shall an operator engage in activities which threaten an endangered species." Bargath, Inc. has contracted with a respected environmental science firm, West Water Engineering from Grand Junction, CO. Page 1 of 3 West Water Engineering has prepared a review and analysis of the proposed right-of-way alignment in regards to identification of sensitive and rare plant species and federally listed threatened and endangered birds. 1. There were no sensitive and rare plant species identified within the proposed pipeline right-of-way. 2. There were no federally listed threatened and endangered birds or nests identified within the proposed pipeline right-of-way. Bargath, Inc. will comply with all applicable state and federal laws during construction of the pipeline in regards to sensitive and rare plant species and federally listed threatened and endangered birds. Cultural, archeological, paleontological resources Please note that we have designed the new pipeline largely within existing disturbed right-of-way areas, thus, there would not be any cultural, archeological or paleontological resources within this proposed right-of-way. The attached WestWater Engineering survey bears this fact out. Wetlands Please see Tab 7- Regulatory Permit Requirements. Wetland disturbance is permitted by the U.S. Army Corp of Engineers via the Nationwide Permit 12 for utility activities noted. Issues Regarding Studies on Private Property An area of concern is the preparation of the materials noted above on private property. As noted in Tab 2 and previous areas within the application, the proposed Crawford Trail Gathering Pipeline is on private property for the Garfield County portion of the pipeline and on federal property for the portion being applied for with the U.S. BLM. We believe that the studies required by Garfield County regarding sensitive and rare plant species, federally listed threatened and endangered birds and cultural, archeological and paleontological resources on private property can, and will, cause issues with private property owners. The studies noted are typically required for activities that occur on public property such as the U.S. Bureau of Land Management. These studies are typically not welcome and are many times not allowed on private property. Page 2 of 3 Bargath, Inc. has been proactive in this pipeline process by contracting West Water Engineering to review these issues and to guide Bargath, Inc. in the planning and construction of the pipeline. We have included a copy of the West Water Engineering report to this permit application, but do so in protest. We will follow the recommendations of the study and want to be respectful to both our private property owners and to the Garfield County permitting process. Please contact me with any questions. Sincerely, Philip B. aughan President PVCMI Page 3 of 3 Crawford Trail 20 Inch Gathering Pipeline System Sensitive Area Survey Report Garfield County, CO Prepared for: Bargath, Inc. C/O Williams Production RMT Parachute, CO Prepared by: WestWater Engineering 2516 Foresight Circle, #1 Grand Junction, CO 81505-1022 970-241-7076 June 2007 Crawford Trail 20 Inch Gathering Pipeline System Sensitive Area Survey Report Garfield County, CO June 2007 INTRODUCTION WestWater Engineering (W WE) in coordination with Grand River Institute (GRI) (cultural resources survey) conducted a sensitive area and biological survey along and adjacent to the proposed pipeline alignment for Williams Production RMT (Bargath, Inc). The objectives of the survey were to document the following natural resource characteristic and features. • Identify and map areas where sensitive and rare plant species occur, • Locate raptor (bird of prey) nest sites and identify potential raptor habitat and use areas, • Characterize and map habitats along the proposed pipeline alignment in regards to suitability for wildlife and in particular for Birds of Conservation Concern, • Identify and map areas of potential habitat for federally listed threatened and endangered wildlife species, • Identify sensitive mule deer habitat, • Identify potential aquatic resources (fisheries) in the project area, • Determine if any wetlands are present in the project area, • Identify the presence of any cultural, archeological or paleontological resources. All locations of survey observations were recorded using handheld Global Positioning System (GPS) units and locations were recorded as Universal Transverse Mercator (UTM) coordinates (Datum: NAD83, Zone: 12 S). Locations of observed raptor nests and other sensitive areas are depicted on attached Figures 1 and 2. GENERAL PROJECT AND HABITAT DESCRIPTION The Bargath Crawford Trail Project consists of a proposed 20 -inch natural gas gathering pipeline and related facilities installed along a corridor of approximately 16.8 miles and is generally located along the divide between Parachute Creek and Roan Creek northwest of Parachute, Colorado (Figures 1 and 2). The proposed pipeline will connect with a 30 -inch gathering pipeline near the Bargath Parachute Creek Gas Plant and terminates near the headwaters of the Wet Fork of the West Fork of Parachute Creek. The proposed pipeline is entirely within Garfield County, State of Colorado, and is located both on private and BLM lands. Approximately 0.72 miles of the alignment are on BLM land. Another short segment of the pipeline alignment is located approximately 200 yards west of BLM lands such that biological factors of concern to the BLM may be affected (Figure 2). The proposed pipeline parallels existing natural gas pipeline(s) right-of-ways on the Roan Creek - Parachute Creek Divide. The Crawford Trail portion of the alignment will be constructed along a new pipeline alignment through relatively undisturbed terrain and vegetation. WestWater Engineering Page 1 of 18 pages 6/29/2007 Vegetation communities along the pipeline route vary with elevation that ranges from 5400 feet at Parachute Creek to 8500 feet on the Roan Creek -Parachute Creek Divide. The Crawford Trail portion from Parachute Creek to the top of the Divide can be categorized as pifion-juniper woodlands with mixed sagebrush and greasewood shrublands. The pifion-juniper woodlands are dominated by Utah juniper (Juniperus utahensis) and are mixed with a sparse understory of forbs and grasses. No agricultural meadows are affected. As elevation increases the north facing slopes are vegetated by Gambel oak (Quercus gambelli) and serviceberry (Amelanchier alnifolia) with scattered Douglas -fir (Pseudotsuga menziesii)(Photo 1) . The north -facing slopes immediately below the rim are dominated by dense stands of Douglas -fir. Vegetation along the Divide portion of the pipeline is a mountain shrub community with aspen dominated draws (Photo 2). Common shrubs consist of serviceberry, Gambel oak, mountain -mahogany (Cercocarpus montanus), mountain big sagebrush (Artemesia tridentata vaseyana) and snowberry (Symphoricarpos rotundifolius). There are no major riparian communities directly affected by the project. Several wetland areas were noted near the Crawford Trail section of the pipeline and potential Army Corp of Engineer (ACOE) waterways were noted along the Divide portion of the pipeline. Photo 1. North and south facing slope of Crawford Trail. WestWater Engineering Page 2 of 18 pages 6/29/2007 Photo 2. Typical aspen stand on top of Roan Plateau. BIRDS OF CONSERVATION CONCERN; RAPTORS AND OTHER AVIAN SPECIES As part of the protection and management of avian species, the U.S. Fish and Wildlife Service (USFWS) in 2002 published a list of Bird Species of Conservation Concern (BOCC). In a Memorandum of Understanding (MOU), the BLM, USFWS and U.S. Forest Service placed the highest priority for conservation on birds included on the bird species of conservation concern list. A subset of this list includes a register of Birds of Concern for the Southern Rockies and the Colorado Plateau, including western Colorado. Not all of these BOCC bird species occur regularly in Colorado, and some are present only as seasonal migrants. Of those known to breed in Colorado, only a portion are known or suspected to breed within the vicinity of the proposed pipeline. After a thorough review of the literature (Andrews and Righter 1992, Kingery 1998), WWE biologists compiled a list of species likely to nest along or near the proposed pipeline. Habitat and nesting records for these Birds of Conservation Concern, as described in the Colorado Breeding Bird Atlas (Kingery 1998, and references therein) and Colorado Birds (Andrews and Righter 1992), in the vicinity of the pipeline are summarized below. Bird identification and taxonomic nomenclature are in accordance with that applied by the Colorado Breeding Bird Atlas Project (Kingery 1998). WestWater Engineering Page 3 of 18 pages 6/29/2007 RAPTORS (Including those that are Birds of Conservation Concern) Nine species of raptors appear on the Birds of Conservation Concern (BOCC) species list for the Southem Rockies and the Colorado Plateau. Four of the BOCC raptors, the Burrowing Owl, Ferruginous Hawk, Swainson's Hawk and the Short -eared Owl, are not likely to occur in the project area. In addition to the BOCC list, 8 other species of raptors could potentially be found nesting in the pipeline project area (Table 1). Table 1. Raptor species that may be present in the project area Common Name Scientific Name BOCC Habitat & Breeding Records Northern Harrier Circus cyaneus Y • Grassland, shrubland, agricultural areas, and marshes. Nests in areas with abundantcover (e.g.,tall reeds, cattails, grasses) in grasslands and marshes. Also known to nest in high -elevation sagebrush. Northern Goshawk Acciptergentiles N • Typically in high elevation coniferous or aspen forest. Can occur in pifion-juniper habitat. Cooper's Hawk Accipiter cooperii N • Cottonwood riparian to spruce/fir forests, including pifion/juniper woodlands. Nests most frequently in pines and aspen. Sharp -shinned Hawk Accipiter striatus N • High density young, or even -aged, stands of coniferous forest and deciduous forests of aspen or oak brush with small stands of conifers. Red-tailed Hawk ButeoN jamaicensis • Diverse habitats including grasslands, pinon juniper woodlands and deciduous, coniferous and riparian forests. Nests in mature trees (especially cottonwood, aspen, and pines) and on cliffs and utility poles. Golden Eagle Aquila chrysaetos Y • Grasslands, shrublands, agricultural areas, pifion juniper woodlands, and ponderosa forests. Prefers nest sites on cliffs and sometimes in trees in rugged areas. American Kestrel Falco sparverius N • Coniferous and deciduous forests and open terrain with suitable perches. Nests in cavities in trees, cliffs and buildings. Peregrine Falcon Falco peregrines Y • Pifion-juniper woodlands and coniferous and riparian forest near cliffs. Nests on ledges of high cliffs away from human disturbance. Prairie Falcon Falco mexicanus Y • Grasslands, shrublands, and alpine tundra. Nests on cliffs or bluffs in open areas. Great Horned Owl Bubo virginianus N • Occupies diverse habitats including riparian, deciduous and coniferous forests with adjacent open terrain for hunting. Northern Saw- whet Owl Aegolius acadicus N • Mountain and foothills forest and canyon country. Significant use of pifion juniper woodland and Douglas - fir. Long-eared Owl Asio otus N • Occupies mixed shrublands. Nests and roost in sites in dense cottonwoods, willows, scrub oak, junipers and dense forest of mixed conifers and aspens. WestWater Engineering Page 4 of 18 pages 6/29/2007 Survey Procedures WWE biologists surveyed and inventoried the project area for raptors on May 31, June 13, 15, and 18, 2007 by searching cliffs and walking all areas of suitable nesting habitat. All potentially suitable sites within 0.25 miles of the pipeline route were inspected for the presence of nests. Previously identified raptor nests in the survey area were checked to determine nesting activity. In this portion of Colorado, the raptor nesting season is generally considered to occur between mid-February and mid-August. Typically, owls and eagles are the first raptors to begin the annual nesting cycle followed by members of the Genus Accipiter, Buteo, Circus and Falco. Usually, by mid-August all young birds have fledged and left the nest. Observations WWE biologists observed a total of 25 raptor nest sites during the survey. Of the 25 nests observed 4 were active (Photo 3) and 21 were inactive. WWE biologists assigned nest sites to specific raptor species based on knowledge of raptor occurrence in this area, as well as design, location, materials, and configuration of nesting structures. Table 2 and Figures 1 and 2 depict the results of this survey. Photo 3. Active Red-tailed hawk nest WestWater Engineering Page 5 of 18 pages 6/29/2007 Table 2. Crawford Trail Pipeline — Raptor Nest Locations, June 2007 Number.:_.. . Zone , Smiting ; Northing Photo„ ,bi,. Status_ UNHA 12S 739942 4379115 yes Inactive UNHA 12S 740104 4379246 yes Inactive UNHA 12S 738212 4379511 yes Inactive UNHA 12S 738097 4379845 yes Inactive RTHA-13 12S 737500 4381320 no Inactive RTHA-15 12S 736887 4383409 no Inactive RTHA-16 12S 737510 4383691 no Inactive RTHA-26 12S 736017 4385457 no Inactive COHA-11 12S 736183 4386300 no Inactive UNHA 12S 736216 4386385 yes Inactive RTHA-24 12S 736509 4386766 yes Active UNHA 12S 736538 4386714 yes Inactive COHA-15 12S 735396 4387807 yes Active RTHA-5 12S 741533 4376976 no Inactive COHA-4 12S 739834 4378803 no Inactive COHA-12 12S 739166 4379153 no Inactive COHA 12S 744311 4376627 no Sighting CORA-17 12S 745184 4377217 no Inactive COHA-16 12S 737220 4382520 yes Active RTHA-26 12S 736998 4384689 no Inactive RTHA-25 12S 737237 4385890 no Inactive RTHA-35 12S 735060 4386413 yes Active RTHA-7 12S 740899 4377868 no Inactive RTHA-9 12S 740575 4378546 no Inactive Recommendations and Discussion for Raptors Activities associated with the proposed project have the potential to impact raptor populations. In order to reduce the potential for impacts, if any active nests are located, it will be important that the project proponent schedule construction activities such that they do not interfere with breeding, nesting and brood rearing activities. The Colorado Division of Wildlife (CDOW) recommended raptor nest site avoidance standards for the species observed in this survey are summarized below (Table 3). Table 3. Colorado Division of Wildlife raptor active nest avoidance standards. pecies Buffer Distance Avoidance Period (Seasonal Restirictions) Red-tailed Hawk 0.33 mile February 15 to July 15 Coopers Hawk 0.25 mile April 1 to August 15 Reference: Recommended Buffer Zones and Seasonal Restrictions For Colorado Raptors, Gerald Craig, Colorado Division of Wildlife, 2005. WestWater Engineering Page 6 of 18 pages 6/29/2007 BIRDS OF CONSERVATION CONCERN (other than raptors) Survey Procedures In addition to raptors presented above, WWE biologists surveyed the proposed pipeline route for the presence of sensitive or migratory BOCC that could potentially occur in the project area in order to help evaluate the potential impacts of this project. BOCC habitat and nesting records, as described in the Colorado Breeding Bird Atlas (Kingery 1998, and references therein) and Colorado Birds (Andrews and Righter 1992), in the vicinity of the pipeline are summarized in Table 4. Table 4. BLM sensitive & migratory bird species that may be present in the project area Common Name Scientific Name Habitat & Breeding Records Pinion Jay Gymnorhinus cyanocephalus • Pinon-juniper woodlands. Nests in pinons or junipers. • Confirmed breeder in Garfield County in the vicinity of the pipeline, including the Roan Plateau. Virginia's Warbler Vermivora virginiae • Dense shrublands and scrub forests of Gambel oak, pirion- juniper, mountain mahogany or ponderosa pine. Nests on the ground among dead leaves or on rock or log overhangs. • Nesting has been confirmed in Garfield County, including the Roan Plateau. Likely nester in the project area. Black -throated Gray Warbler Dendroica nigrescens • Mature pinon-juniper woodlands. Nests on horizontal branches in pifion or juniper. • Nesting has been confirmed in Garfield County in the vicinity of the pipeline, including on the Roan Plateau. Sage Sparrow Amphispiza belli • Large contiguous areas of low -elevation big sagebrush or sagebrush/greasewood shrublands. Nests in sagebrush. • Breeding has been confirmed in Garfield County west of Parachute. None in the pipeline area. Greater Sage- Grouse Centrocercus urophasianus • Large continuous areas of sagebrush on flat or gently rolling terrain with open areas in vicinity for leks. Nests in herbaceous areas within sagebrush. • Confirmed breeder in Rio Blanco and Garfield Counties. The Greater Sage -Grouse occurs in suitable habitat along the pipeline alignment and is recognized by the BLM and CDOW as a species of special concern. Greater Sage -Grouse (GrSG) occupy the higher elevations in the Greasewood Gulch area north of Piceance Creek and on the divides between the Parachute Creek, Piceance Creek and Roan Creek drainages. They require large, continuous areas of sagebrush habitat on flat on gently rolling terrain, with vegetation dominated by sagebrush (Artemesia tridentata spp.) and generally lacking an overstory of mountain shrub or woodland species. Their breeding occurs in the spring on leks or strutting grounds, where dominant males display to attract females to mate. Once bred, the females disperse to build a nest and lay eggs. Recent research by the Colorado Division of Wildlife reveals that approximately 80% of the females nest within a 4 -mile radius of the lek on which they were bred (CDOW 2005, Tony Apa, personal communication). Residual grass cover mixed with a quality herbaceous component in WestWater Engineering Page 7 of 18 pages 6/29/2007 the sagebrush understory results in increased survival of the nests and chicks through their early weeks after hatching. Self-sustaining sage -grouse populations require extensive patches of sagebrush dominated habitat for long-term viability. The patch size of sagebrush habitat necessary to support sage - grouse is not well known on the Roan Plateau. It is known that sage -grouse on the Roan Plateau prefer ridge tops and are thought to spend little time on steep hillsides and in the bottom of gulches and draws. Biologists walked the proposed pipeline route following transect routes through suitable habitat looking for grouse as well as grouse sign (droppings, feathers, tracks). All locations of grouse sign were recorded using handheld GPS units and locations are reported as UTM coordinates (Datum: NAD83, Zone: 12S). Special attention was focused on potential sage -grouse habitat on ridge -tops and other suspected habitat up to 0.25 miles from the ROW. Observations No BOCC species were observed during the survey. The songbird species most likely to nest in this project area include the Pinyon Jay, Black -throated Gray Warbler and Virginia's warbler. Both the Pinyon Jay and Black -throated Gray Warbler prefer mature pifion-juniper woodlands for nesting. The primary suitable habitat for nesting would be in the pifion-juniper woodlands in the segment of the pipeline running through the BLM lands on the old Crawford Trail portion of the pipeline. Virginia's Warblers have been confirmed nesting in a variety of shrublands in semi- arid environments including oakbrush, piton juniper and aspen. It nests primarily in the understory of these plant communities, all of which occur in this project area. The Sage Sparrow would not be expected to breed in the location of this project. No new observations of Greater Sage -Grouse or grouse sign were found during this survey. Special attention was focused on Greater Sage -Grouse habitat in areas where the Colorado Division of Wildlife (CDOW) had previously indicated the existence of occupied habitat and where grouse sign had been observed during earlier surveys (Figure 1 and 2). Two areas are identified and noted in Figure 1 and 2. Recommendations Impacts to migratory species which nest in sagebrush and pifion-juniper woodlands as well as oakbrush and aspen in this area can be minimized if surface disturbing construction activities take place outside the nesting season. This project will result in the loss of potential nesting sites when trees and shrubs are removed during construction. However, these vegetation types are generally abundant in the project area and the loss due to this project will represent a small portion of the habitat suitable for these birds. In order to reduce potential impacts on nesting birds, brush clearing in dense stands of sagebrush, pinon juniper woodlands, oakbrush and aspen habitats should take place outside of the nesting seasons. Nesting season is generally considered between May 15 and July 31 in this area. June 1 to July 15 is the peak period when most incubation and brood rearing takes place. If brush clearing can occur prior to May 1, most affected birds will relocate to alternate nesting sites. WestWater Engineering Page 8 of 18 pages 6/29/2007 After mid to late July, most fledging has occurred and brush clearing impacts would be minimized. Pinyon Jays are an exception to typical nesting periods in this area and are known as an early nester. Records show nests with eggs as early as March 23. Often young birds have fledged by mid-May each year. Construction occurring after May 31 will reduce the possibility of impacts to this species. Black-throated Gray Warblers almost always select mature pifion-juniper habitat for nesting and rarely select sites outside this habitat. Juniper woodlands within the project area are found mostly on the BLM lands. Minimizing the disturbance to existing mature juniper woodlands in these areas would reduce potential affects to this species. Virginia's warblers could nest in a variety of habitats, however minimizing disturbance to the vegetation communities found in the project area prior to May 1 and after July 15 would reduce potential affects on this species as well. Activities associated with the proposed project have the potential to impact Greater Sage-Grouse as well. The Piceance Basin and the Roan Plateau are historic sage-grouse range, and the birds in this area are considered to be one population. Construction activities associated with the proposed project have the potential to impact breeding and nesting sage-grouse (Holloran 2006). In order to reduce the potential for negative impacts, it is important that the project proponent schedule construction activities such that they do not interfere with breeding, nesting and brooding activities. If active nests are found near the pipeline or other facilities, it may be necessary to postpone activities until brood breakup occurs and young birds are considered to be independent of the adult hens. In the project area, sage-grouse populations have been declining in recent years with the core population now found mainly on the Roan Plateau and in the Cathedral Bluffs area. The number of active leks has decreased as the sage-grouse population has declined across the Piceance Basin/Roan Plateau. In order to reduce the likelihood that sage-grouse populations decline further, a number of mitigation practices should be implemented to protect leks, nesting habitat and crucial winter habitat. Construction timing restrictions and mitigation measurers should be implemented in identified habitats that include the following areas: Lek Sites: Sage-grouse breeding occurs each year from early March through approximately the end of May. WWE recommends prohibiting disruptive surface occupation or adverse habitat modification with 0.25 miles of active strutting grounds from April 15 through July 7 each year. There are three active leks within four miles of the project area but none affected by the 0.25 spatial or timing restrictions. Nest Habitat: Approximately 75-80% of sage-grouse nesting occurs within 4 miles of lek sites and 25-50% of nest sites occur within 0.5 miles of the lek (the 3 leks included in Figure 1 and 2 are within 4 miles of the pipeline ROW). Because grouse and grouse sign was detected along the pipeline ROW and adjacent areas during earlier surveys, it is reasonable to conclude that sage-grouse are potentially nesting where there is suitable habitat. The 4-mile buffers shown around active leks show where the majority of nesting is expected to occur in suitable habitat (Figure 1 and 2). WestWater Engineering Page 9 of 18 pages 6/29/2007 In order to reduce potential impacts, WWE biologists recommend that disruptive surface activities should be avoided in nesting habitats from April 15 through July 7. These dates are based on "typical" years and "typical" conditions. Chick fledging can be delayed by up to two weeks in some years. If there is evidence that fledging is late in a particular year, it may be desirable to delay construction activities within four miles of an active lek until after August I. Nesting is most likely to occur in the areas where grouse sign was observed during the previous field surveys. WWE recommend avoiding construction in these areas from April 15 to July 7 if surveys indicate the presence of nesting grouse. Winter Habitat: Certain sagebrush habitats are heavily used by sage -grouse during the winter. Often this represents the only suitable area available for use by these birds during periods of heavy snow pack. Winter habitat is often similar to nesting habitat on the Roan Plateau. WWE biologists recommend that disruptive surface activities should be avoided in winter concentration areas from December 16 through March 15 each year. Reclamation: Sage -grouse are considered sagebrush obligate species. They require extensive, sagebrush dominated habitats for survival. Sage -grouse in the project area appear to tolerate, to an unknown extent, mountain shrub vegetation that has invaded extensive stands of sagebrush. Revegetation of construction disturbances should be planned with sage -grouse habitat as a high priority. The removal of mountion shrub species (e.g., serviceberry and oakbrush) will likely benefit sage -grouse by encouraging sagebrush dominated habitats. Revegetation with native grasses, native forbs and sagebrush is recommended. Satisfactory seed mixes can be found in the Integrated Vegetation and Noxious Weed Management Plan prepared by WestWater Engineering for this project (WestWater 2007a). In areas where sufficient sagebrush occurs adjacent to the corridor, natural reseeding may be sufficient for sagebrush establishment. However, in areas where current sagebrush densities are low, it is recommended that seeds of sagebrush species and ecotypes native to the Piceance Basin and Roan Plateau be added to the seed mixes. SPECIAL STATUS SPECIES PLANT SURVEY Available literature and publications prepared by the Bureau of Land Management, Grand Junction Field Office were reviewed for a listing of rare plant species known to occur within the project area. In addition, the following information sources were reviewed for the most up to date status on the plant species that could possibly be expected within the inventory area. Species from these lists were included on the list of species sought during the field inventory. • Threatened or endangered species protected under the Federal Endangered Species Act and those which are candidates or proposed for listing (USFWS website: https://ecos.fws.gov/tess_public/servlet/gov.doi.tess public.servlets.EntrvPage). • Species listed by the BLM as Sensitive in northwest Colorado (BLM website: http://www.co.blm.gov/botanv/sens species.htm). WestWater Engineering Page 10 of 18 pages 6/29/2007 • Species included on lists prepared by the Colorado Natural Heritage Inventory (website: http://www.cnhp.colostate.edu/list.html) for Garfield County, Colorado. Special status species (SSS) of plants that may be present in the project area, and their habitats, are listed below in three categories: 1) federally -listed Threatened or Endangered (1 species, Table 5), 2) Federal Candidate Species (2 species, Table 5), and 3) BLM Sensitive Species (5 species, Table 6). Nomenclature and habitat descriptions are based on the Colorado Natural Heritage Program (CHNP) literature (Spackman et al. 1997, Spackman and Anderson 2002, and references therein). Table 5. Federally -listed Threatened, Endangered and Candidate plant species Scientific Name Common Name Statu s* Habitat Preference Penstemon debilis Parachute penstemon C Endemic to Garfield County with only five known occurrences; sparsely vegetated, south facing, steep, white shale talus in the Mahogany Zone of the Parachute Creek Member of the Green River Formation. Elev. 7,800-9,000 ft. Phacelia submutica DeBeque phacelia C Chocolate -brown or gray clay on Atwell Gulch and Shire members of the Wasatch Formation; sparsely vegetated steep slopes. Elev. 4,700-6,200 ft. Sclerocactus glaucus Uinta basin hookless cactus T Typically xeric and fine textured Quaternary and Tertiary alluvium soils overlain with cobbles and pebbles; cold desert shrub and pinon juniper communities along river benches, valley slopes, and rolling hills. * E= Federal Endangered, T= Federal Threatened, C= Federal Candidate Table 6. BLM sensitive plant species Scientific Name Common Name Habitat Preference Astragalus Ast dragalu eus Debeque milkvetch Varicolored, fine textured, seleniferous, saline soils of the Wasatch formation -Atwell Gulch member. Elev. 5,100- 6,400 ft. Astragalus naturitensis Naturita milkvetch Sandstone mesas, ledges, crevices and slopes in pifion- juniper woodlands. Elev. 5,000-7,000 ft. Cirsium perplexans Adobe thistle Barren clay outcrops derived from shales of the Mancos or Wasatch formations; open and disturbed sites in mixed shrubland and pifion-juniper woodland. Elev. 5,000-8,000 ft. Menzelia rhizomata Roan Cliffs blazingstar Steep eroding talus slopes of shale, Green River formation. Elev. 5,800-9,000 ft. Procedures WWE biologists surveyed and inventoried the project area for Threatened, Endangered and Sensitive plants in conjunction with other surveys by walking the proposed staked pipeline WestWater Engineering Page 11 of 18 pages 6/29/2007 alignment and visually surveying areas of suitable habitat and plant communities. In addition, the area within 50 feet of the staked pipeline alignment was surveyed. The survey was conducted at a period when phenological development of most plant species was in the flowering and/or seed production stage. Observations and Recommendations No T & E or sensitive plant species (TESS) were observed during the biological survey. The section of the pipeline alignment through BLM lands has terrain and soils that could potentially support TESS vegetation. This area was thoroughly surveyed for Parachute penstemon, and Roan Cliffs blazingstar and no plants were found. The closest known site supporting Parachute penstemon is the south side of Mt Callahan while the closest known site for Roan Cliffs blazingstar is in the Starkey Gulch area. Adobe thistle was not observed during this survey with the closest know observation south of Riley Gulch. No known groups of these plants will be affected by the proposed pipeline alignment or compressor stations. AQUATIC RESOURCES AND WETLANDS Procedures WWE biologists surveyed and recorded information relating to aquatic resources, wetlands and Army Corps of Engineers (ACOE) crossings in conjunction with other surveys that were conducted for this report. All locations were recorded using handheld GPS units and are reported in UTM coordinates (Datum NAD83, Zone 12S). Observations One wetland area south of an existing well pad where the lower Crawford trail begins was noted (Table 7, Figure 1). Table 7. Crawford Trail Pipeline Waterways and Wetlands Locations, June 2007 Number tong UTM ' Eaatlpg `. trim Northing Width (ft) _, bept6 (ftr; r , a bitlml�d(i- a '' c. .. R� COEI 12S 747433 4375044 1 0.5 Data from Parachute Express Pipeline COE2 12S 747408 4375077 5 1.5 Data from Parachute Express Pipeline COE3 12S 747122 4375409 2 0.5 Data from Parachute Express Pipeline COE4 12S 746524 4376563 3 1 Data from Parachute Express Pipeline (PEP) COES 12S 746475 4376612 4 1 Data from PEP COE6 12S 746322 4376952 NA NA Adjacent wetland COE7 I2S 739729 4379066 2 0.5 Previous pipeline crossing COE8 12S 739173 4379557 2 0.75 Cascade Creek Other potential ACOE waterway crossings near Parachute Creek and the Crawford trail portion of the pipeline have been identified in a recent report entitled " Parachute Express Pipeline, Garfield County Sensitive Areas Report, June 2007", prepared by WestWater Engineering (WestWater 2007b) . A potential waterway was observed in a drainage near an old cabin and another waterway was observed where the pipeline crosses Cascade Creek (Figure 1, Table 7, WestWater Engineering Page 12 of 18 pages 6/29/2007 Photo 4). No water was flowing near the cabin site, however, water was flowing in Cascade Creek. Water from a tributary to the northeast was also flowing into Cascade Creek near the pipeline crossing. No suitable habitat for fisheries was observed during this survey. Photo 4. Pipeline crossing at Cascade Creek Recommendations Due to the sensitive nature of wetlands and the diversity of plants found in wetlands care should be taken to avoid disturbing these areas during construction of the pipeline. To protect the integrity of waterways and associated habitats identified in this survey, precautions should be taken when crossing or intersecting them. Adequate barriers and filtration methods should be used to prevent and reduce soil from eroding into the water and adjacent riparian vegetation. The ACOE should be consulted to determine the applicability of any permits that might be required during the construction of the pipeline through the identified waterways. MULE DEER AND ELK Procedures WWE biologists surveyed and recorded information relating to mule deer and elk use in the area in conjunction with other surveys that were conducted for this report. Observations The native plant community along the pipeline alignment varies with changing elevation. The WestWater Engineering Page 13 of 18 pages 6/29/2007 lower elevation section of the pipeline is within Wyoming sagebrush, greasewood and juniper woodlands. The ridge tops and south facing slopes remain vegetated by this plant community to a point just below the rim of the Divide. As elevation increases, vegetation on the north facing slopes transitions to serviceberry and oak brush with a few scattered Douglas -fir. The north facing slopes immediately below the rims are dominated by dense stands of Douglas -fir. Heavy elk use was evidenced by the well worn trails though -out the stand. Once atop the Divide the vegetation consists of a mountain shrub community with aspen stands in the draws. Numerous deer and elk bedding areas, trails and signs of browsing were observed within the aspen stands during the surveys. Deer and elk were seen on a daily basis and several observations of fawns or calves were made during the survey. Recommendations Although construction of the proposed pipeline follows an existing disturbed pipeline ROW for the majority of its length, the Crawford Trail section and the final section of the pipeline will cross previously undisturbed areas. The disturbance to the heavy stand of Douglas -fir north of the pipeline below the rim should be minimized as much as possible to protect the habitat for deer, elk and nesting raptors. The aspen stands on top of the Divide should be protected as much as possible as they are important calving areas for elk and fawning areas for deer as well as providing a secure area for foraging. W W E recommends that reclamation of disturbed areas along the pipeline be done with native plant species. On BLM lands, in low elevations habitat similar to that encountered along the pipeline alignment, the Glenwood Springs BLM Energy Office has recently updated revegetation requirements for reclamation of natural gas disturbance and issued recommended seed mixes suitable for the potential natural community (BLM 2007). On private lands, Williams has developed a seed mix for reclamation that is suitable and acceptable to private landowners along the pipeline alignment. Both recommended seed mixes for BLM and private lands are presented in the Integrated Vegetation and Noxious Week Management Plan that WestWater prepared for Garfield County for this pipeline project (WestWater Engineering 2007c). WestWater does not recommend the addition of non-native grasses in reclamation seed mixes such as crested wheatgrass and smooth brome, which can out -compete and replace native plant communities. CULTURAL RESOURCES WestWater has conferred with Grand River Institute (GRI) regarding potential cultural resources that may be found along the proposed alignment. GRI consulted with the Colorado State Historical Society in order to identify potentially sensitive areas located along the proposed pipeline. GRI Archaeologists have reviewed the map showing the proposed Crawford Trail Gathering Pipeline, and have conducted a preliminary files search with the Office of Archaeology and Historic Preservation of the Colorado Historical Society. No known significant historic or prehistoric properties are recorded within the proposed impact corridor. However, an WestWater Engineering Page 14 of 18 pages 6/29/2007 intensive cultural resources inventory of those areas that have not been previously inspected must be completed. A BLM-GSFO Archaeologist has indicated that the Crawford Trail should be recorded as an historic property and evaluated as to its eligibility for listing on the National Register of Historic Places. REFERENCES Apa, T. June 2005. Avian Researcher, Colorado Division of Wildlife, Grand Junction, CO. Andrews, R. and R. Righter. 1992. Colorado Birds: A Reference to Their Distribution and Habitat. Denver Museum of Natural History, Denver. Bureau of Land Management. 2007. Revisions to BLM energy office revegetation requirements. Bureau of Land Management, Glenwood Springs, CO. Holloran, Matthew J., Greater Sage -Grouse (Centrocercus urophasianus) Population Response to Natural Gas Field Development in Western Wyoming. PhD, Department of Zoology and Physiology, December, 2005. Kingery, H.E. (Editor). 1998. Colorado Breeding Bird Atlas. Colorado Bird Atlas Partnership and Colorado Division of Wildlife, Denver. Natural Diversity Information Source (NDIS). 2005. Colorado Division of Wildlife. 6060 Broadway, Denver, CO. http://ndis.nrel.colostate.edu/index.html Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado Rare Plant Field Guide. Prepared for the Bureau of Land Management, the U.S. Forest Service and the U.S. Fish and Wildlife Service by the Colorado Natural Heritage Program. United States Bureau of Land Management. 1997. Record of Decision and Approved White River Resource Area, Resource Management Plan. Meeker, CO. U.S. Fish and Wildlife Service. 2002. Birds of conservation concern 2002. Division of Migratory Bird Management. Arlington, VA. WestWater Engineering. 2007a. Integrated vegetation and noxious weed management plan. Prepared for Bargath, Inc. as requested by Garfield County, CO. WestWater Engineering. 2007b. Parachute Express Pipeline Sensitive Areas Report. Prepared for Phil Vaughan Construction Management, Inc. as requested by Garfield County, CO. WestWater Engineering. 2007c. Integrated Vegetation and Noxious Weed Management Plan. Prepared for Bargath, Inc. as requested by Garfield County, CO. WestWater Engineering Page 15 of 18 pages 6/29/2007 Nm S � N PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 13- Rehabilitation Plan. Includes Revegetation Plan 9.07.04 (12) and Weed Management Plan 9.07.04 (13). Steve Anthony- Garfield County Vegetation Management - December 11, 2006- Steve Anthony and I discussed the project via phone. Steve indicated that he would review the application after receiving it and will comment. Please see attached the "Crawford Trail Gathering Pipeline 7/16/07." This rehabilitation plan includes the gathering pipeline and the Crawford Trail compressor station. Please also find attached an "Integrated Vegetation and Noxious Weed Management Plan" for the project prepared by WestWater Engineering. Steve Anthony noted that he will need a quantity of the acreage to be disturbed to set forth the revegetation bond for the project. It is anticipated that this bond would be released after 2 growing seasons. Page 1 of 2 The disturbed area is determined using the following method: Summary ROW Length and Acreage Totals For Federal and Fee Lands Crawford Trail Gathering Pipeline 20" Gathering Line Crawford Trail Compressor Station Bargath Inc. c/o Williams Production RMT Company Owner Length LF Permanent ROW Acres Construction ROW ACRES Extra Workspace at 9% Total Acres Total Surface Area Acres Federal Lands 3,820 4.38 6.58 0.60 7.17 Fee Lands Chevron 37,537.80 Chevron 30 ft.= 25.85 Chevron 50 ft.= 43.09 3.88 46.97 Fee Lands- Other 48,185.30 89, 543.10 50 ft.= 55.31 85.54 75 ft.= 82.96 132.63 7.47 11.95 90.43 144.57 Total Lands for Pipelines Lands for Crawford Trail Compressor Station — All Fee 14.46 Total Acreage Fee Lands: 137.40 acres. Total Acreage Fee lands for Crawford Trail compressor station: 14.46 Total Acreage: 151.86 acres We are prepared to post a reclamation/revegetation bond for the 151.86 acres disturbed. In 2007 Bargath, Inc. posted a reclamation/revegetation bond for the Cottonwood Compressor Station to Webster Hill 24" gathering line for $2,500 per acre and we are prepared to do the same for this project. Please contact me with any questions. Sincerely, Philip B. Vaughan President PVCMI Page 2 of 2 CRAWFORD TRAIL GATHERING PIPELINE REHABILITATION PLAN 7/1607 rhe Crawford Trail gathering pipeline will be located on rangeland owned by numerous owners. The length of the pipeline is approximately 16.95 miles in length. The soil should be stripped to a depth of approximately twelve (12) inches and stockpiled at the edge of the disturbed right-of-way. The maximum depth of stockpile shall be 24" or less to preserve soil viability. The expected duration of the project is 10 to 12 weeks. Topsoil stockpiles shall be preserved and water applied to prevent wind erosion. RECLAMATION Areas disturbed by construction will be reclaimed no later than May 15, 2008, following pipeline construction. The objectives of reclamation will be as follows: 1. Stabilization of the disturbed areas will be conducted by providing wind and water erosion control to reduce soil loss. The stormwater management plan for the project shall be adhered to. 2. Utilize the prescribed seed mixtures and additional vegetation practices as described below to establish a self- sustaining vegetative rangeland cover. PIPELINE ABANDONMENT The pipeline will be abandoned in accordance with Colorado Oil and Gas Conservation Commission regulations in place at the time of abandonment. BACKFILLING, GRADING, AND RE•CONTOURING Reclaimed areas will be sloped as per the project drawings and specifications. Page 1 of 8 TOPSOIL REPLACEMENT Soil salvaged during construction activities will be redistributed over the soil surface after subsoil has been replaced and .dditional backfilling; grading, and re -contouring steps have been completed as described below. Soil will be replaced by using front-end loaders, trackhoes, and dozers. Soil will not be replaced when it is excessively wet and/or frozen. SEEDBED PREPARATION / SOIL TILLAGE Seedbed preparation and soil tillage will be completed after the application of subsoil, topsoil, and any soil amendments. Soil tillage will be to a minimum depth of 4" utilizing a disk, chisel plow, or harrow. Seedbed preparation will also include removal of coarse fragments (rock material) that exceed 35% to 40% of the soil surface as well as rocks 8" in diameter that occupy more than 10% of the soil surface. SEEDING METHODS AND TIMES If seeding is performed in the spring, it will be accomplished by May 15; if fall seeding is performed it will be completed after August 30 and before the soil freezes. Seeding efforts will consist of drill seeding with a rangeland drill to a planting depth of A" to 1/2" on slopes 3:1 or flatter. Broadcast seeding followed by harrowing or hand raking to lightly cover the seed with soil will be used on slopes steeper than 3:1, or on areas inaccessible for drill seeding equipment. ,All areas to be reclaimed will be mulched no later than 24 hours after seeding with a certified weed -free straw or grass hay material. Grass hay mulch will be applied at 1 ''A tons per acre, or straw mulch will be applied at 2 tons per acre. Mulch material will be crimped into the soil surface with a commercial mulch crimper, a straight disc, or bulldozer tracks if too steep to otherwise crimp mulch in place. Seed tags shall be retained after planting and submitted to the Garfield County Vegetation Manager to verify the seed mixture and the quantity of seed planted. SEED MIXTURES Please see Table 1 for the seed mixtures. WEED CONTROL PLAN Prior to construction, a qualified person will inspect the proposed right-of-way and will inventory and map the proposed project area for any listed Garfield County noxious weeds. Based on this inventory and mapping, methods, materials, and timing of weed control measures will be specified. During the life of the pipeline operation, the operator will be obligated to regularly inspect the right-of-way and to inventory and treat any listed Garfield County noxious weeds. Page 2 of 8 TABLE 1 Lowland (valley floor): Common Name Scientific Name Seeds/lb Seeds/SQFT Seed Rate Lbs(pls)/acre Western Wheatgrass Agropyron smithii 125,000 6 2.09 Thickspice Wheatgrass Agropyron dasystachyum 160,000 8 2.18 Russian Wildrye Elymusjunceus 170,000 7 1.79 Galleta Hilaria jamesii 160,000 10 2.72 Indian Ricegrass Oryzopsis hymenoides 155,000 6 1.69 Small Burnet Sanguisorba minor 50,000 2 1.74 Big Sagebrush Artemesia tridentata 2,500,000 1 0.02 1 fOTALS 40 12.23 BLM: Common Name Scientific Name Season Form Seed Rate Lbs(pls)/acre Indian Ricegrass Oryzopsis hymenoides Cool Bunch 1.9 Galleta Hilaria jamesii Warm Bunch 2.5 Bluebunch Wheatgrass Agropyron spicatum Cool Bunch 2.8 Slender Wheatgrass Agropyron trachycaulum Cool Bunch 3.3 Muttongrass Poa fendleriana Cool Bunch 0.6 Sandberg Bluegrass Poa secunda Cool Bunch 0.6 Page 3 of 8 Highlands: Williams Wildlife Mix Fee - Species % Mix Orchard Grass (Dactylus glomerata 15 Alfafa 30 Slender wheatgrass (Agropyron trachycaulum) 15 small brunet 15 millet 10 Quickguard sterile triticale 15 Total 100 Page 4 of 8 SITE REHABILITATION PLAN CRAWFORD TRAIL COMPRESSOR STATION 7/16/07 The Crawford Trail Compressor Station will be located on rangeland owned by Puckett Land Company. The Crawford Trail Compressor Station area is 14.46 acres. The subject site appears to lie in the Parachute-Rhone-Irigul soil series as shown on the Garfield County Generalized Soils Types map dated 1/31/02. These soils are better classified as a sandy, silty clay (CL) under the Unified Classification System. The soil should be stripped to a depth of approximately twelve (12) inches and stockpiled at the facility margins. The maximum depth of stockpiled shall be 24" or less to preserve soil viability. Topsoil stockpiles will be seeded as described below in the section on seeding methods and times. RECLAMATION Two phases of reclamation are planned. Soil stockpiles and areas disturbed by construction that will not be utilized during the compressor station construction operation will be reclaimed immediately following construction. Final reclamation will be performed within one year of compressor station closure and removal. The objectives of reclamation will be as follows: 1. Stabilization of the disturbed areas will be conducted by providing wind and water erosion control to reduce soil loss. 2. Utilize the prescribed seed mixtures and additional vegetation practices as described below to establish a self- sustaining vegetative rangeland cover for cattle pasture use. FACILITY AND STRUCTURE REMOVAL The compressor stations will be abandoned in accordance with Colorado Oil and Gas Conservation Commission regulations in place at the time of facility abandonment. Equipment will be removed from the site. BACKFILLING, GRADING, AND RE -CONTOURING Reclaimed areas will be sloped to 3:1 or less. Page 5 of 8 TOPSOIL REPLACEMENT Soil salvaged during construction activities will be redistributed over the soil surface after subsoil has been replaced and additional backfilling; grading, and re -contouring steps have been completed as described below. Soil will be replaced by using front-end loaders, trackhoes, and dozers. Soil will not be replaced when it is excessively wet and frozen so as to jeopardize soil structure. SEEDBED PREPARATIONISOIL TILLAGE Seedbed preparation and soil tillage will be completed after the application of subsoil, topsoil, and any soil amendments. Soil tillage will be to a minimum depth of 4" utilizing a disk, chisel plow, or harrow. Seedbed preparation will also include removal of coarse fragments (rock material) that exceed 35% to 40% of the soil surface as well as rocks 8" in diameter that occupy more than 10% of the soil surface. SEEDING METHODS AND TIMES Soil stockpiles and areas disturbed by construction that will not be utilized during compressor station operation will be seeded. If seeding is performed in the spring, it will be accomplished by May 15; if fall seeding is performed it will be completed after August 30 and before the soil freezes. Seeding efforts will consist of drill seeding with a rangeland drill to a planting depth of Yd' to %2' on slopes 3:1 or flatter. Broadcast seeding followed by harrowing or hand raking to lightly .;over the seed with soil will be used on slopes steeper than 3:1, or on areas inaccessible for drill seeding equipment. All areas to be reclaimed will be mulched no later than 24 hours after seeding with a certified weed -free straw or grass hay material, Grass hay mulch will be applied at 1 Y tons per acre, or straw mulch will be applied at 2 tons per acre. Mulch material will be crimped into the soil surface with a commercial mulch crimper, a straight disc, or bulldozer tracks if too steep to otherwise crimp mulch in place. Seed tags shall be retained after planting and submitted to the Garfield County Vegetation Manager to verify the seed mixture and the quantity of seed planted. SEED MIXTURES Please see Table 1 and Table 2 for the seed mixtures. Page 6 of 8 WEED CONTROL PLAN A qualified person will inspect the compressor station sites and will inventory and map the proposed project area for any "sted Garfield County noxious weeds. Based on this inventory and mapping, methods, materials, and timing of weed control measures will be specified. The vast majority of compressor station area will be graveled and will be devoid of vegetation. Bargath, Inc. reserves the right to modify this plan based on Best Available Technology (BAT) at the time of compressor station closure. TABLE 1 Stockpile and Disturbed Areas Reclamation Common Name Scientific Name Pounds Pure Live Seed (PLS) per acre Western wheatgrass Pascopyrum smithii 8.0 TOTAL PLS 8.0 Page 7 of 8 Table 2- Final Reclamation Seed Mixture Williams Wildlife Mix Fee- Species % Mix Orchard Grass (Dactylus glomerata 15 Alfafa 30 Slender wheatgrass (Agropyron trachycaulum) 15 small brunet 15 millet 10 Quickguard sterile triticale 15 Total 100 Page 8 of 8 a Bargath, Inc. Crawford Trail 20 Inch Gathering Pipeline System Integrated Vegetation and Noxious Weed Management Plan Garfield County, Colorado Prepared for: Bargath, Inc. CIO Williams Production RMT Parachute, CO Prepared by: WestWater Engineering 2570 Foresight Circle #1 Grand Junction, CO 81505 June 2007 Bargath, Inc. Crawford Trail 20 Inch Gathering Pipeline Integrated Vegetation and Noxious Weed Management Plan June 2007 Introduction A field survey of the Bargath Crawford Trail pipeline alignment was conducted by WestWater Engineering (WWE) biologists to document noxious weed infestations and occurrence. The inspection identified appropriate topics for inclusion in an integrated vegetation and noxious weed management plan required by Garfield County Regulation 9.07.04 (13) (Board of County Commission 2006). Factors considered include soil type and texture, existing land management, absence or presence of listed noxious weeds and natural vegetation community. Pipeline Alignment and Landscape Setting The 20 inch pipeline will be constructed from the Williams Parachute Creek Gas Plant and terminate on the northern end along the Roan Creek -Parachute Creek Divide approximately 28 miles northwest of Parachute, Colorado (Figure 1 and 2). The pipeline's general alignment is in a southeast to northwest direction, with an assent of about 2,500 ft from the lowlands along Parachute Creek to the highlands of the Roan Plateau. The vegetation is diverse due to different elevational gradients encountered along the pipeline alignment. Generally, there are three main habitat types including pinon juniper woodlands, mountain shrublands, and dispersed aspen stands/groves (Figure 3 and 4). Along the upper portion of Crawford Trail west of Parachute Creek, dense stands of Douglas -fir occur, and are dominated by old-growth trees. Since the pipeline alignment is along ridge tops in most areas, only a few drainages are crossed (WWE 2007). Table 1 is a list of plant species observed along the pipeline alignment. Table 1. Plant species observed along the Crawford Trail pipeline alignment. Common Name Scientific Name Wyoming sagebrush Artemisia tridentata wyomingensis Aspen Populus tremuloides Basin sagebrush Artemisia tridentata tridentata Needle and thread Stipa comata Narrowleaf cottonwood Populus angustifolia Serviceberry Amelanchier alnifolia Gambel oak Quercus gambelii Utah Juniper Juniperus osteosperma Pinon pine Pinus edulis Chokecherry Padus virginiana Snakeweed Gutierrezia sarothrae Greasewood Sarcobatus vermiculatus Death camus Toxicoscordion venenosum WestWater Engineering Page 1ot 16 June 27, 2007 Table 1. Plant species observed along the Crawford Trail pipeline alignment. Common Name Scientific Name Douglas -fir Pseudotsuga menziesii Mountain mahogany Cercocarpus montanus Green rabbitbrush Chrysothamnus vicidijlorus Rubber rabbitbrush Chrysothamnus nauseosus Patterson's milkvetch Astragalus pattersonii Yucca Yucca harrimaniae Prickly -pear cactus Opuntia spp. Bur buttercup Ranunculus testiculatus Paintbrush Castilleja spp. Onion Allium spp. Greasewood Sarcobatus vermiculatus Shadscale Atriplex confertifolia Indian Rice Grass Oryzopsis hymenoides Crested wheatgrass Agopyron cristatum Sandberg bluegrass Poa sandbergii Double bladderpod Physaria rollinsii Slender Wheatgrass Agropyron paucijlorum Mormon tea Ephedra viridis Galletagrass Hilaria jamesii Thick spike Wheatgrass Thinopyrum ponticum Bottlebrush Squirreltail Sitanion hystrix Winterfat Krascheninnikovia lanata Basin wildrye Leymus cinereus Monument plant Gentianella heterosepala The terrain in the project area varies from flat to steep hillsides. The portion of the pipeline from Parachute Creek to the top of the Roan Creek -Parachute Creek divide is positioned along a narrow ridge line (Figure 5). The terrain on either side of this area drops steeply into drainages to the north and south of the alignment. Approximately 4.3% (0.72 of 16.8 miles) of the main pipeline will be constructed across Bureau of Land Management (BLM) lands with the remaining portions on private lands. Since the pipeline will be constructed along ridge tops for much of the alignment, only a few drainages will be affected by construction. The USDA (2003) soils map indicates the following general soils types on the pipeline route including: 1) Parachute -Rhone foams: Moderately deep to deep soil, well -drained. Found on ridge crests, mountainsides and upland slopes. The native vegetation is mainly shrubs and grasses. Found on slopes of 5 to 30%. Runoff is medium or rapid and the hazard of water erosion is moderate to severe. 2) Rock outcrop-Torriorthents: Camborthids, which are dominantly shallow to deep well drained, located on steep to extremely steep soils, and rock outcrop on fans and ridges. Soils and gravels are composed of mainly Green River shale. Surface runoff is rapid. WestWater Engineering Page 2 or 16 June 27, 2007 Survey Methods Surveys of the proposed pipeline alignment were conducted on May 31, June 13, 15, and 18, 2007. WWE surveyed the project area on foot and recorded pertinent information in field notebooks and locations were documented with handheld GPS receivers. Locations were recorded in Universal Transverse Mercator (UTM) units using NAD 83 map datum. Photographs were taken of terrain features and included in this report. Survey Results Eleven species of Colorado state listed weed species were observed along the pipeline alignment; six of those observed are on the Garfield County list (Table 2, Figures 1 and 2). Table 2. Crawford Trail 20 inch pipeline --list of noxious weeds Common Name* Scientific Name Type** Location, UTM coordinates Downy bromec (cheatgrass) BRTE Bromus tectorum A 12S 12S 12S 12S 12S 741786 741041 737083 735135 737917 4376557 4377501 4384946 4387400 4380586 Houndstonguen Cynoglossum Common throughout pipeline alignment: see CYOF offrcinale B Figure 1 and 2 for areas of concentration Bull thistle Circium vulgare CIVU B 12S 743186 4375999 12S 742887 4375756 Salt cedars Tamarix 12S 746058 4377155 TARA ramosissima P 12S 747393 4374937 Chicoryc Cichorium intybasP 125 746833 4376136 CIIN 125 748094 4374400 Field bindweeds COAR4 Convovulus arvensis P 125 745967 4377048 Hoary Cressn Cardaria draba P 12S 747792 4374689 CADR Perennial Lepedium latifolium pepperweedn P 12S 746705 4376588 LELA2 Common Arctium minus 12S 746977 4376048 burdocks B 12S 747611 4374900 ARMI2 12S 746321 4376995 12S 747911 4374866 WestWater Engineering Page 3 or 16 June 27, 2007 Table 2. Crawford Trail 20 inch pipeline --list of noxious weeds Common Name* Scientific Name Type** Location, UTM coordinates Redstem filareen ERCI6 Erodium cicutarium A -B 12S 746321 4376995 Canada thistleB CIAR4 Cirsium arvense P 12S 747911 4374866 * 8 CCR 1203-19, Colorado Department of Agriculture sta e listed, Bold type Garfield County isted, ° State of Colorado"B" list, c State of Colorado "C" list. (State of Colorado 2005) **A=annual, B=biennial, and P=perennial. The most common listed weed species observed in the study area was houndstongue. This species is found along a major portion of the pipeline along the Logan Mountain access road on the Roan Creek -Parachute Creek Divide. Ground disturbance from the construction of natural gas access roads, well pads and pipeline rights-of-way has provided abundant opportunity for this species to proliferate. However, this species is also commonly noted in undisturbed area, particularly in area of higher moisture conditions such as aspen groves, north facing slopes and around springs and stock ponds. Undoubtedly, this species is easily spread by domestic livestock and big game ungulates as they move about the area and seeds become attached to their coats. Downy brome (cheatgrass) appears to be gaining a larger presence at higher elevations where it is rapidly invading disturbed sites. It is seldom observed in undisturbed, native vegetation. Where observed, the stands of downy brome grow very aggressively and produce an abundant seed crop. Distribution of this species is not yet widespread throughout the project area, but appears in almost all terrain and soil types. On BLM lands in the project area, the vegetative community does not support extensive noxious weed infestations, except for field bindweed. In this area, the bindweed does not grow aggressively and appears somewhat stunted, most likely due to lack of optimum growing conditions for this species. Areas dominated by pinon-juniper woodlands at lower elevations along the descending Crawford Trail through the BLM lands does not support high densities of noxious weeds with downy brome the most common species observed. Along Parachute Creek the number of weed species increases due to disturbance and suitable growing conditions. Recommended Treatment WestWater recommends that project proponents working in the highland areas along the Logan Mountain access take an aggressive approach to controlling downy brome. This species is still limited enough in its distribution that control can have a favorable affect and could lead to potential elimination/control of this species. The maintenance of native plant communities has a high potential for favorably affecting wildlife populations and the natural ecosystem. Since multiple companies operate in this area, a cooperative integrated weed plan should be developed and implemented for the control/eradication of downy brome. WestWater Engineering Page 4 of 16 June 27, 2007 Recommended weed control strategies for annual, biannual and perennial weed species are outlined in Tables 3 and 4 below. 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. Chop roots with a spade below soil level. 3. Treat with herbicide in rosette or bolting stage, before flowering. Redstem filaree is most often controlled with herbicides. 2,4-D, or dicamba at 1 Ib. ai/acre can be applied to rosettes in the late fall or early spring. 4. Mow biennials after bolting stage, before seed set. Mowing annuals will not prevent flowering but can reduce total seed production. 5. Prevent the establishment of new infestations by minimizing disturbance and seed dispersal, eliminating seed production and maintaining healthy native communities. 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. 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 perennials. The resilience of some perennials 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. 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 1/2" - 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 WestWater Engineering Page 5 of 16 June 27, 2007 Table 4. Treatment strategies for perennials Target: Deplete nutrient reserves in root system, prevent seed production 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. Best Management Practices The following practices should be adopted for any construction project to reduce the costs of noxious weed control. The practices include: • Top soil, where present, should be segregated from deeper soils and replaced as top soil on the final grade, • In all cases temporary disturbance should be kept to an absolute minimum, • Equipment and materials handling should be done on established sites, • Disturbances should be immediately replanted with the recommended mix in the re - vegetation section. In areas with slopes greater than 3%, imprinting of the seedbed is recommended. Imprinting can be in the form of dozer tracks or furrows perpendicular to the direction of slope. When hydro - seeding or 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. Revegetation Restoration of the plant communities in this area can be positively affected by reintroduction of native plant species and suitable non-native species. Reclamation Seed Mixes During April 2007, the BLM Glenwood Springs Energy Office issued revisions to their re - vegetation requirements (BLM 2007). In pinon juniper woodlands and mountain shrub communities encountered on BLM lands along the pipeline alignment, the Glenwood Springs BLM Energy Office has provided a menu of seed mixes suitable for the potential natural community and requires the use of these species during reclamation. Companies can select from the menu of seed mixes to fit the specific needs of their project. On BLM lands, Williams has selected the seed mix presented in Table 5. On private lands, Williams has developed low elevation and high elevation seed mixes that are suitable and acceptable to private landowners along the pipeline alignment (Table 7). The seed mixes were developed by Williams with the approval of CDOW and the BLM. WestWater Engineering Page 6 or 16 June 27, 2007 Table 5. BLM seed mix for the Crawford Trail pipeline. Common Name Scientific Name Season Form Seed Rate Ibs(pls)/acre Indian Ricegrass Oryzopsis hymenoides Cool Bunch 1.9 Galleta Hilariajamesii Warm Bunch 2.5 Bluebunch Wheatgrass Agropyron spicatum Cool Bunch 2.8 Slender Wheatgrass Agropyron trachycaulum Cool Bunch 3.3 Muttongrass Poa fendleriana Cool Bunch 0.6 Sandberg Bluegrass Poa secunda Cool Bunch 0.6 TOTALS Artemesia tridentata 2,500,000 1 11.7 Table 6. Williams lowland (Valley floor) seed mix. Common Name Scientific Name Seeds/Ib Seeds/SQFT Seed Rate Ibs(pls /acre Western Wheatgrass Agropyron smithii 125,000 6 2.09 Thickspike Wheatgrass Agropyron dasystachyum 160,000 8 2.18 Russian Wildrye Elymus junceus 170,000 7 1.79 Galleta Hilariajamesii 160,000 10 2.72 Indian Ricegrass Oryzopsis hymenoides 155,000 6 1.69 Small Burnett Sanguisorba minor 50,000 2 1.74 Big Sagebrush Artemesia tridentata 2,500,000 1 0.02 TOTALS 40 12.23 Table 7. Williams highlands wildlife mix -fee lands Species % Mix Orchard Grass (Dactylus glomerata 15 Alfalfa 30 Slender Wheatgrass (Agropyron trachycaulum) 15 Small Burnett 15 Millet 10 Quick:uard Sterile Triticale 15 Total 100 WestWater Engineering Page 7 of 16 June 27, 2007 Preferred seeding method is a multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and waterbars. Seed should be bagged separately so each size group of seed can be metered at the appropriate rate. Applying a quarter pound over an acre with a species such as Sandberg bluegrass is difficult and may require use of wheat bran or rice hulls or some other adjuvant to assist metering the small seeds at the appropriate rate. 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. Upon successful control of target species and establishment of grasses, shrubs and forbs 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. Consideration should be given to reseeding disturbed areas with locally collected sagebrush seed, particularly in those areas where Greater Sage -Grouse may benefit (WWE 2007). Weed Control Techniques Herbicides Difficult species respond better to application of a combination of two or more chemical modes of action (biological reason for plant death) rather than one. Professionals or landowners using herbicides must use the concentration specified on product labels. 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 relocation process. Most herbicide applications should use a surfactant as directed on the herbicide label or other adjuvants as called for on the herbicide label. Downy Brome Treat following emergence of 20 to 30% of the seed heads on downy brome, but before seed set. This timing allows a second flush of downy brome to be controlled along with plants in early seed head. Follow-up applications may be necessary later in the spring and fall (September - November). It is imperative that downy brome be controlled to inhibit seed production. Sprayers and individual spray nozzles should be carefully calibrated before application as recommended on product labeling. Use enough water as a carrier for complete coverage, but not WestWater Engineering Page 8 or 16 June 27, 2007 to the point of runoff. Ground application can be accomplished using ATV or pick-up (boom and wand) to carefully control rate and coverage. Operate equipment at ground speeds no greater than five mph. Performance may be improved by reducing speed in areas of heavy weed infestations to ensure adequate coverage. Better results may be obtained if two applications are made in opposite directions. Treatments along the pipeline alignment could be efficiently and effectively addressed using a ATV mounted with a tank spray system. Redstem Filaree and Chicory Treat with herbicide in rosette or bolting stage, before flowering. Redstem filaree is most often controlled with herbicides. 2,4-D, or dicamba at 1 Ib. ai/acre can be applied to rosettes in the late fall or early spring. Houndstongue and Common Burdock Management objectives for houndstongue control should involve periodic monitoring of populations and preventing seed production. Houndstongue only reproduces through seed production, therefore monitoring infestations and being aware of seed dispersal where seeds can cling to animals, clothing, and vehicles are crucial when developing a management plan. Control methods should be combined into an integrated management system for the best long- term control of the plant. Several herbicides are available for houndstongue control. Picloram, dicamba, chlorsulfuron, metsulfuron, and 2,4-D amine can control these plants. Excellent long-term control can be achieved with picloram applied in spring, summer, or fall. Dicamba and chlorsulfuron can provide excellent control when applied in the spring or fall. 2,4-D amine applied in May can control up to 97 percent of the first year houndstongue plants and 77 percent of the plants when applied to second year plants that were flowering. Field Bindweed Long-term control of field bindweed from herbicides depends on movement of a sufficient amount of herbicide through the root system to kill the roots and root buds. This requires use of systemic (movement throughout the plant) herbicides. Examples of systemic herbicides include 2,4-D, dicamba (Banvel/Clarity), picloram (Tordon) and glyphosate (Roundup or equivalent). Contact herbicides such as paraquat kill only the tissue directly contacted by the herbicide, which results in only short-term control of topgrowth. Successful control of field bindweed requires a long-term management program. A herbicide applied once will never eliminate established stands; rather, several retreatments are required to control field bindweed and keep it suppressed. Because of long seed viability and tremendous food reserves stored in the roots, repeated chemical and/or mechanical control measures must be used. WestWater Engineering Page 9 of 16 June 27, 2007 For successful control, herbicides should be applied when field bindweed is actively growing and stems are at least 12 inches long. Herbicide performance can vary greatly due to environmental conditions. Plants growing under moisture or heat stress usually have smaller leaves with a thicker cuticle and slower biological processes than plants growing in more favorable conditions. As plant stress increases, herbicide uptake and translocation decreases, which in turn decreases herbicide performance. Hoary Cress Hoary cress can be controlled with herbicides but it is a difficult and expensive process. Successful control usually requires repeated applications with foliar herbicides applied during the rosette stage. Escort (chemical name: Metsulfuron) can be used on rosettes but it is ineffective after the plants start to bloom. 2,4-D is somewhat effective on mature plants. Tordon (chemical name: picloram) does not control hoary cress. Mechanical Salt Cedar (combined with chemical treatment) Management of non-native phreatophytes, such as salt cedar, consists of five components — planning with inventory/mapping, control, re -vegetation, monitoring, and maintenance. Without all five components, it is unlikely that tamarisk control projects will be successful over the long term. Successful management also depends on changing the approaches based on experience and newer technologies becoming available; i.e., adaptive management. In the past, Williams has elected to control salt cedar on the properties owned by the company by removal using chainsaws, which is probably the most widely used approach available. This approach requires trained chainsaw sawyers and herbicide applicators for cutting the tamarisk. Within approximately 15 minutes of cutting, a solution oftriclopyr systemic herbicide (Garton) mixed in a vegetable crop oil is applied to the cut stump. The Tamarisk Coalition (2006) indicates that the chainsaw method for the cut -stump approach is a successful method of controlling tamarisk with approximately 15 percent re -growth requiring re -treatment. Houndstongue and Common Burdock Hand pulling is considered to be effective when conducted on small infestations if the entire root crown of the plant is removed and if conducted prior to the reproductive growth stage to prevent seed production. Houndstongue plants in the rosette growth stage may be difficult to control as the prostrate rosette resists mowing. However, mowing and clipping flowering stems close to the ground before seeds are formed will reduce seed production. In one study, seed production was reduced after second year houndstongue plants were clipped 0 to 3 inches above ground in late June. Sixty percent of the clipped houndstongue plants did not regrow and plants that resumed growth produced approximately 25 seeds per plant compared to 364 seeds per plant produced in the unclipped controls (Houndstongue control 2007). WestWater Engineering Page 10 or 16 June 27, 2007 Cultivation may reduce houndstongue infestations but may not be feasible on wildlands and rangelands. Young rosettes or older plants that have not produced seeds can be controlled by cutting the root crowns 1 to 2 inches below the soil surface in autumn or early spring. Alternative Methods Downy Brome For downy brome (cheatgrass) infestations the application of vesicular-arbuscular mycorrhizal fungi (V/AMF) should be considered. 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 ecto-mycorrhizal fungi are associated mostly with trees and some shrubs. 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 reseeding and treating roots of live seedling trees and shrubs at time of planting come in powder and are available from many different sources. Some applicators, including a New Castle company, collect and grow local accessions of V/AMF. The latter are applied to weed patches and are reputed to greatly increase competition of native plants with Canada thistle in particular thereby affecting a non -chemical control of some noxious weeds. Commercial Applicator Recommendations A certified commercial applicator is a good choice for initial control efforts. An applicator has the full range of knowledge, skills, equipment and experience desired when dealing with downy brome, houndstongue and Canada thistle and other difficult plants. 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. Landowners using unrestricted products must obey all label warnings, cautions, and application concentrations. The author of this report is not responsible for inappropriate pesticide use by readers. References Barrow, J.R., and Bobby D. McCaslin, 1995. Role of microbes in resource management in arid ecosystems. In: Barrrow, J.R., E.D. McArthur, R.E. Sosebee, and Tausch, Robin J., comps. 1996. Proceedings: shrubland ecosystem dynamics in a changing environment. Gen. Tech. Rep. INT -GTR -338. Ogden, Utah: U.S. Department of Agriculture, Forest Service, Intermountain Res. Sta., 275 pp. WestWater Engineering Page 11 of 16 June 27, 2007 Bureau of Land Management. 2007. Revisions to BLM energy office revegetation requirements. Bureau of Land Management, Glenwood Springs, CO. Board of County Commissioners. 2006. Garfield County zoning resolution of 1978, amended October, 2006. Building and Planning Department, Glenwood Springs, CO, 78 pp. Houndstongue control methods. 2007.www.agdepartment.com/noxiousweeds/pdf/ Houndstongue.pdf 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. Tamarisk Coalition. 2006. Options for Non -Native Phreatophyte Control. Tamarisk Coalition, Grand Junction, Colorado. USDA. 2003. Soil Survey of Rifle Area, Colorado. U.S. Department of Agriculture, Soil Conservation Service. WestWater Engineering. 2007. Bargath Crawford Trail 20 inch pipeline, sensitive area report, Garfield County, Colorado. Grand Junction, CO. WestWater Engineering Page 12 of 16 June 27, 2007 Figure 3. Mountain shrub vegetation which dominates the upland areas of the pipeline alignment. Figure 4. Typical aspen grove usually found adjacent to the pipeline alignment immediately off ridge tops in many areas. WestWater Engineering Page 13 of 16 June 27, 2007 Figure 5. Crawford Trail vegetation and terrain, viewed to the east including the Parachute Creek Valley. WestWater Engineering Page 14 or 16 June 27, 2007 .4 • 40, ;`l^' lf� Jq .a. • 4 W lliams Production RMT WestWater Engineering 0 • f 9� 1 ,> 1 PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 15- Emergency Response Plan 9.07.04 (14). Please see attached the "Emergency Response Plan- Natural Gas Pipeline Gathering System". This document was submitted in June 2007 to David Blair with the Grand Valley Fire Protection District for his review and comment. The proposed 20" pipeline is wholly within the Grand Valley Fire Protection District and Garfield County Sheriffs office jurisdiction. Prior to start of pipeline construction, an on-site preconstruction meeting shall be held and David Blair shall be invited to attend and to speak regarding emergency response and the Grand Valley Fire Protection District. As per 9.07.04 (14), Williams Production RMT Co. agrees to reimburse the Grand Valley Fire Protection District for costs incurred in connection with emergency response for the operator's activities at the site. Please contact me with any questions. Sincerely, Philip B. Vaughan President PVCMI Page 1 of 1 EMERGENCY RESPONSE PLAN NATURAL GAS PIPELINE GATHERING SYSTEM GARFIELD COUNTY, COLORADO RIO BLANCO COUNTY, COLORADO I. PLAN INTRODUCTION 1. Purpose and Scope of Plan Coverage a. Plan Details This Emergency Response Plan (ERP) is specific to the Natural Gas Pipeline Gathering System, owned and operated by Williams Production RMT Company (WPC). This document is designed to provide for the safety and welfare of facility personnel, the community, the environment, and property by enabling a coordinated and efficient response by WPC personnel in the event of an emergency. When the words WPC personnel are used in this plan, they are intended to mean all WPC employees and contractors. This ERP includes details to: ■ make the facility and immediate surrounding area safe (people first, then property and environment); • isolate the area/facility; • notify appropriate public agencies; • identify fire extinguishing equipment, and meeting locations; • identify medical and rescue responsibilities for trained employees; ■ establish methods for reporting fires and other emergency events; • provide labor, materials, and equipment; • establish and maintain adequate communication with governmental agencies (fire, police, public officials, etc.) and clarify their responsibilities; • identify emergency shutdown procedures for affected equipment; ■ handle hazardous substances; • establish an off-site media center and return the facility to service b. Legal Authority The intent of this ERP is to comply with guidelines set forth by the Occupational Safety and Health Administration (OSHA). The Emergency Planning and Response Regulations of 29 CFR 1910.38 and Hazardous Waste Operations and Emergency Response (HAZWOPER) Standards of 29 CFR 1910.120 have been specifically followed when applicable. c. Assumptions and Situations The procedures outlined in this ERP were developed under the assumption that the local fire protection and emergency response agencies will respond to emergencies at the facility when notified and will assist to the extent of their respective capabilities. The procedures outlined in this document are to be followed when responding to any of a number of events. These events include, but are not limited to the following: Natural disasters and severe weather conditions including: • floods • damaging storms • earthquakes ■ weather extremes (cold, blizzards, heat) • lightning and wildfires Disruption to normal operations: • Hazardous material/chemical releases from stationary or mobile sources 2 • unscheduled valve closure or safety equipment shutdown, or any unscheduled emergency shutdown • major accidents involving WPC vehicles or equipment owned by contractors • bomb threats • threats against employees or WPC facilities • fatalities or multiple hospitalizations involving employees or members of the public • disturbances on WPC property • damage to WPC property which interferes with the performance of normal business • disruption of service to customers (scheduled and unscheduled) Catastrophic Failure and Damage: • major fires • major environmental release • significant destruction of facilities The ERP also provides procedures for communications with employees, governmental agencies, and the public during emergencies to assure an effective response during an emergency situation. d. Facility Health and Safety Policy This ERP is a reflection of the WPC health and safety policies and procedures. When the facility, or a portion of the facility, is involved in an emergency event, WPC personnel shall take the appropriate action to safeguard human life, protect WPC and surrounding property, and maintain or restore operations if possible. Field personnel must immediately communicate information about any emergency event to their immediate supervisor. The supervisor will immediately initiate the appropriate notification procedure. In the event that the supervisor cannot be reached immediately, field personnel will initiate necessary notifications. 2. TABLE OF CONTENTS Section Page No. Section I — Plan Introduction Elements 2 1. Purpose and scope of plan coverage 2 2. Table of contents 3 3. Current revision date 4 4. General Facility Identification Information 4 Section II — Core Plan Elements 4 1. Discovery 4 2. Initial response 7 3. Sustained actions 12 4. Termination and follow-up actions 12 Section III — Annexes 13 Annex 1. Facility and locality information 13 Annex 2. Notification 15 Annex 3. Response management system 15 Annex 4. Incident documentation 18 Annex 5. Training and exercises/drills 18 Annex 6. Response critique and plan review and modification process 20 Annex 7. Prevention 22 Annex 8. Regulatory compliance and cross-reference matrices 23 Annex 9. Document control 25 3 3. Current Revision Date: March 2006 4. General Facility Identification Information a. Facility Name — Natural Gas Pipeline Gathering System b. Williams Production, RMT 4289 County Rd 215, Parachute Co 81635 (970) 285-9377 c. Garfield County Rio Blanco County Directions to facility: Main Office- Take Interstate 70 to exit 75. Follow County Rd 215 North approximately 1 mile. Turn Right into office parking lot. d. NAICS CODE: 211111 e. Key contacts for plan development and maintenance: a. Safety Representative —Greg Anoia 263-2744 b. PSM Coordinator — Bruce Reese 263-5307 f. Phone number for key contact g. Facility phone number: 970-285-9377 - Main Office h. Facility fax number: 970-285-0121 - Main Office 970-263-5313 - Man Camp 4 Section II - - Core Plan Elements 1. Discovery — Shutdown of a facility is done manually when an emergency is detected. Natural gas pipelines are not equipped with an ESD device. When a problem is discovered the proper personal are notified to close the necessary valves and to possibly shut in the wells that feed that specific part of the gathering system. The first employee to detect or to be notified of an emergency event has the responsibility to: o notify emergency personnel o notify the Incident Commander. If the designated Incident Commander is not available, contact the Alternate Incident Commander. o initiate procedures outlined in the ERP o initiate defensive measures to control the emergency event. If these measures can be done safely, and then only if the employee has been trained in emergency response or has completed Hazardous Waste Operations and Emergency Response (HAZWOPER) operations level training, defensive measures can be initiated. Using appropriate HAZWOPER training, the employee will determine if a hazardous atmosphere exists where SCBA is required. If the first employee has not completed emergency response training, including appropriate HAZWOPER training he/she shall not initiate defensive measures, but shall complete notification procedures. This checklist should be used to assist the person discovering the incident in determining what steps to take NAME OF FACILITY: DATE OF INCIDENT: YOUR NAME: TIME 1ST AWARE: FIRST RESPONDER EMPLOYEE COLLECTS THE FACTS. Briefly describe the emergency: Was the ESD activated? Yes No N/A Time: Did you activate the siren? Yes No N/A Time: Can you isolate the problem area? Yes No Time: CAUTION: Do not risk your life or the life of others. Is rescue needed? Yes No Time: Is first aid needed? Yes No Time: If yes, can you move the victim? Yes No Time: 5 Are you in a hazardous environment? Yes No Time: Do you have the proper equipment to proceed without help? Yes No Time: Do you need to call 911? Yes No Time: Are you able to set up an emergency command center? Yes No Phone No. Who should you contact for assistance? LOCAL EMERGENCY RESPONSE AGENCIES Time: Name Ambulance Service: City: State: Phone No. Time: Name Hospital: City: State: Phone No. Time: Name Air Life: City: State: Phone No. Time: Name Alternate Hospital: City: State: Phone No. LAW ENFORCEMENT Time: Name City Police: City: State: Phone No. Time: Sheriff's Office County: City: State: Phone No. Time: State Patrol Name: City: State: Phone No. 6 FIRE DEPARTMENT Time: Fire Department Name: City: State: Phone No. COMPANY PERSONNEL Time: Name: City: State: Phone No. NOTE: Notify Primary Contact as soon as you have the emergency in primary control (e.g., ESD - evacuate - rescue - first aid - isolate fuel source if fire - spill containment to prevent environmental contamination). Time: Name Project Supervisor: Phone No. Time: Name Facility Operator: Phone No. Time: Name Other Technicians: Phone No. Phone No. Time: Name Other Operators: Work No. Home No. Time: Name Safety Engineer: Work No. Home No. If you have the problem under control, start your Emergency Response Plan. LOCAL RESIDENCES Time: Name of Resident: Location: Phone No. Time: Name of Resident: Location: Phone No. Time: Name of Resident: Location: Phone No. PIPELINE COMPANY(S) or OTHER AFFECTED COMPANY(S Time: Company: Phone No. Time: Company: Phone No. Time: Company: Phone No. UTILITIES Time: Company: Phone No. Time: Company: Phone No. Other Action(s) Taken - Attach extra sheets if necessa Time: Time: Time: Time: =�i u dei t�tM t( , Time: Date: Incident Commander's Initials: 7 2. Initial Response a.1 Discovery Upon discovery of an emergency by operations personnel, the Production Supervisor and Safety Representative should be notified � � . ��'•'�tr�� x' -rat. �k� cTITI.E ate � w� � ��'��; E�L�� ®y ^�`�'� s,€ Steve Soychak District Manager (970) 285-9377 (970) 216-0922 (cell) Brad Moss Production and facilities Superintendent (970) 285-2282 (970) 263-3683 (cell) Dan Hoover Production Supervisor (970) 263- 5303 (970) 210- 2288 (cell) Kevin McDermott Safety Engineer (970) 285-9377 (970) 309-1195 (cell) Dave Cesark Principal Environmental Specialist (970) 285-9377 (970) 216-9181 (cell) Tom Fiore Plant Engineer (970) 263- 2743 (970) 210-1641 (cell) Blake Roush Highlands Project Manager (970) 263- 5321 (970) 270-7028 (cell) Scott Brady Drilling and Completions Supervisor (970) 285-9377 (970) 270-9187 (cell) Greg Anoia Safety Coordinator (970) 285-9377 (970) 216-1387 (cell) a.2 Emergency Shutdown Procedures If an emergency necessitates that facility operation be terminated, an emergency shutdowr (ESD) should be performed by authorized personnel. Closure of all necessary valves will be done manually, by authorized field personnel. Next, account for all the personnel working at the site. If the operations personnel do not know where his partner is, he should make a quick sweep of the area to warn him. If a pre -work tailgate meeting was performed, use that sign in list to help account for all personnel. Any emergency shutdown should occur with the intent of maximizing safety and minimizing property or equipment damage. If performing an emergency shutdown will potentially cause injury or death, then personnel should evacuate the facility without completing shutdown procedures. a.3 Evacuation and Personnel Accountability Personnel shall evacuate in a safe, prompt manner, following an appropriate evacuation route. Upon evacuation of the location, personnel shall at least 500 feet from the hazard. Personnel and any visitors to the site at the time of the emergency will be accounted for when evacuation is complete. 8 a.4 Regulatory Notifications Reporting of incidents to regulatory agencies will be the responsibility of the Safety Engineer and the Principal Environmental Specialist. In the event of an emergency, the Safety Engineer and/or Principal Environmental Specialist will determine which agencies should be notified and provide information to the proper representatives. The Spill Prevention Control and Countermeasure Plan (SPCC) for the Parachute Creek Gas Plant should be referenced for reporting procedures and regulatory contacts related to shills and releases. . hJF.••i£<.„� a¢ S/sJf i -£^ 1mo' �C C -S .f - s 1 Any Emergency — Emergency Control Center 911 St. Mary's Air Life City: Grand Junction State: Colorado 1-800-322-4923 St. Mary's Hospital City: Grand Junction State: Colorado (970) 244-2273 Grand River Memorial Hospital City: Rifle State: Colorado (970) 625-1510 Garfield County Sheriff City: Rifle State: Colorado (970) 625-1899 State Highway Patrol City: State: Colorado (970) 248-7277 Colorado State Patrol HAZMAT Service City: Parachute State: Colorado (970) 248-7283 Rifle Fire Protection District City: Rifle State: Colorado (970) 625-1220 Other Agencies or Contacts (Customers, people living near the Facility, etc.) Garfield County Emergency Planning Committee City: Glenwood Springs State: Colorado (970) 945-8020 Colorado Department of Public Health and Environment City: Denver State: Colorado (303) 692-2035 Environmental Protection Agency City: State: 1-800-227-8917 Colorado Oil & Gas Conservation Commission Contact: Jaime Adkins State: Colorado (970) 285-9000 Garfield County Assist County Manager Contact: Jesse Smith State: Colorado (970) 309-5440 Garfield County Public Health Contact: Jim Rada State: Colorado (907) 625-5200 ext. 8113 Garfield County Oil & Gas Department Contact: Judy Jordan State: Colorado (907) 625-0973 ext. 2006 b. Establishment of a response management system b.1 Fires When responding to a fire or explosion, evaluate the situation upon discovery and alert the emergency control center (Fire Department & Sheriff Department) and appropriate WPC personnel immediately of the fire and its location. Give details of the fire to the Senior WPC 9 Representative as soon as possible. The fire could either be 1) limited to the immediate incident location 2) be limited to the confines of the incident location with the potential for migrating off- site or 3) extends beyond the incident location. In the first situation the incident can be mitigated with trained personnel. If the emergency will not necessitate the shutdown of equipment, secure the area, and proceed with containment and control procedures as necessary. Only attempt to extinguish incipient fires with portable extinguishers and by shutting off the flow of the gas to the fire. If the fire cannot be quickly controlled, evacuate the hazard area. Keep supervision aware of the conditions, and whether additional personnel or equipment will be needed. The second situation probably cannot be mitigated without outside assistance from local emergency response agencies. The Fire Department and the Sheriffs Department must be alerted via "911". The Senior On -Duty WPC Representative should take command of the incident until the Senior Officer from the emergency response organization arrives on the scene and assumes control. Provide follow-up information to the responding fire department units including the Property Damage/ Loss Report/ Near Miss Report (http://intranet.williams.com/eforms/forms/property loss near miss.doc) and any hazardous material release information. In the third situation, a fire beyond the confines of the incident location, the public could be affected within 60 minutes. The response cannot be mitigated without both WPC and local government resources. A more aggressive firefighting posture towards a fire may be attempted with the on-site approval and direction of a Williams Superintendent/Manager or their superiors. b.2 Hazardous Material Releases In the event of a hazardous material release, the primary concern and responsibility is the protection of life. The second responsibility is the protection of property and the surrounding environment. Notify the Senior WPC Representative of the emergency with a brief description of the incident, the location, product and specific equipment involved. Leave the area immediately if potentially harmful levels of flammable vapors/gas are present. Do not allow access to the area by unnecessary persons. If the hazardous material spill or leak is beyond the capability of the WPC personnel, evacuate the area. Personnel should rendezvous at least 500 feet from the Hazard. When possible evacuate up wind of the hazard. Refer to the Material Safety Data Sheets (MSDS's) for information on the specific materials released in order to evaluate the hazard. Contact CHEMTREC at 1-800-424-9300 if additional information is required. Attempt to defensively control the leak or reduce the spill size by remotely closing the appropriate valve, reducing operating pressure, or rotating a leaking container so that the hole is above the level of the liquid. Proceed within the guidelines of HAZWOPER and other appropriate emergency processes to control or contain the extent of the release as well as follow proper decontamination procedures. 10 b.3 Medical Emergency A medical emergency must be responded to immediately using available First Aid equipment. Personnel with current First Aid training should be called upon first to control the situation. Local medical emergency response agencies must be notified immediately. Emergency contacts are listed in Section II 2 a.4. Be ready with the following information: - Location of incident with directions to the scene. - Number of people injured. - Type(s) of injuries if known. - Condition of the patient if known. - Whether rescue equipment is needed to transport the victim. For example, is the victim trapped in machinery, in a confined space, etc? b.4 Severe Weather Incidents The facility operations personnel will rely on local weather forecasts and media broadcasts for warning of approaching severe weather. Upon notice or alert of severe weather, personnel should secure the facility and seek shelter. When it is safe to return to the facility, all systems and equipment should be checked for damage and any emergency situations handled in accordance with the ERP. b.5 Transportation Accidents Response to vehicle accidents at or near the facility should be appropriate to the extent of injury and property damage. Accidents involving WPC or contractor vehicles that cause or have the potential to cause an emergency at the facility shall be reported as soon as safely possible to the Project Supervisor and Safety Engineer. In the case of any accident follow the instructions listed on the back of the Accident Report Kit. If this packet is not located in the vehicle contact the Safety Engineer. b.6 Vandalism/Sabotage Upon discovery of evidence of vandalism or sabotage, an immediate assessment of all equipment and systems on location shall be performed. After the assessment is accomplished and a return to normal operations is possible, a thorough documentation of the vandalism should be completed and reported to the Project Supervisor and Safety Engineer. Local law enforcement should be contacted as necessary. b.7 Bomb Threats Any threat made toward personnel or WPC property should be taken seriously and considered dangerous. This threat could be received by phone, written or electronic message, through a third party such as the media, or by actual discovery of an explosive device. When a threat has been received promptly notify the Production and Facility Superintendent, the Safety Engineer and local law enforcement agencies. The Bomb Threat Checklist provided in this section is to help access the threat and to properly document the situation. Most prank calls involve very general information, which makes it difficult to develop an appropriate response. When the bomb threat contains specific information and has positively identified a target, the threat will be treated as very serious and immediate action should be taken to evacuate the threatened area. If Possible, obtain as much information as possible about the location of the bomb, when it is set to explode, etc. The caller might refuse to give any information, or may actually want to provide detailed information so those employees can be evacuated. 11 Whenever a specific location is included in a bomb threat, a search must be performed, but only a Military Explosive Ordinance Disposal Team, a Police Bomb Squad, or a Fire Department Bomb Squad should conduct the search. Williams personnel should not enter the facility during a bomb threat situation for any reason! 12 BOMB THREAT CHECKLIST Name of Facility: Report call immediately to: Telephone Bomb threat received by: Date Questions to ask Exact wording of threat 1. When is bomb going to explode? Child 2. Where is bomb right now? Teenage 3. What does bomb look like? 50+ 4. What kind of bomb is it? 5. What will cause it to explode? Heavy 6. Did you place the bomb? Spanish 7. Why? Other 8. What is your address? New England 9. What is your name? Calm THE FOLLOWING INFORMATION REQUIRES OPINION, PERCEPTION AND JUDGEMENT. PLEASE GIVE YOUR VERY FIRST IMPRESSIONS: CALLER WAS: Male Adult Female Child ESTIMATE AGE Pre Teen Teenage 20 — 40 40 — 50 50+ CALLER'S SPEECH: Accent Heavy Slight Foreign Spanish Asian German Other American Southern New England Other CALLER'S VOICE: Calm Soft Distinct Angry Loud Slurred Excited Ragged Laughing Crying Rapid Slow Normal Deep Nasal Lisp Stutter Deep Breathing Familiar Raspy Clearing Throat Cracking Voice BACKGROUND SOUNDS: Street Noises Office Machinery Animal Noises Tele Booth Kitchen Ware Voices Airplane Bus Factory Machinery Train Clear Music House Noises Local Weather Motor Long Distance Static Other THREAT LANGUAGE: Well Spoken Incoherent Foul Taped Irrational Message Read by Threat Maker 13 3. Sustained actions a. Facilities, Supplies, and Equipment Equipment and supplies to be used in the event of an emergency shall be stored at the facility or carried in field vehicles (if appropriate). Emergency fire equipment will be maintained and located as described in the Fire Prevention portion of the Safety Manual under section 2.5 (http://intranet.williams.com/epss/EHS/safetymanual.doc). Spill or release response materials should be stored in a protected location and replenished immediately after they are used. All emergency equipment should be inspected frequently and deficiencies corrected immediately. b. Facility Security Field personnel control general security during regular duties. Unauthorized personnel should be escorted off site. During an emergency, the Incident Commander will control security. Access to the site will be restricted to individuals involved in specific emergency response procedures. Local law enforcement may be contacted if needed to secure the facility and immediate surroundings. c. Media Relations Policy In the event of an emergency, a designated spokesperson (who receives periodic media training) at the site will handle initial communications with the public and the media. The designated spokesperson may give the media a brief outline of known facts at the scene; subsequent responses will be coordinated through the WPC Corporate Office. In addition, the designated supervisor, and only that person (usually the Production Superintendent or the District Manager) who has had media training shall speak to the media or the public about the emergency event. If reporters arrive, the designated supervisor should check their credentials to confirm that they are reporters, assign someone to escort them to the site and keep them within safe areas. 4. Termination and Follow -Up Activities a. Recovery of Operations Facility operations should commence as soon as safely possible following a facility or equipment shutdown event. An inspection and review of affected equipment or systems by safety and engineering staff members may be required before normal operations can be restored. b. Documentation The Incident Commander shall make certain all calls, conversations, pressures, quantities, or other information pertinent to an emergency event are documented per this ERP and the attachments herein. See Section II 1. c. Damage Assessment Personnel designated by the Incident Commander shall visually inspect all equipment and systems following an emergency incident. Any evidence of damage will be reported to the Incident Commander and properly documented. Any damaged equipment that presents an unsafe condition shall be repaired or replaced before returning affected systems to normal operation. 14 d. Post -Emergency Activities When the emergency has ended or as soon as practical, the following should be considered: • the extent of the damage; • an estimate of time required to repair the equipment/facility. • Call personnel and have them report to duty if and when they are needed: • locate pertinent material available from stock or suppliers; • arrange for contract equipment and personnel; • prepare plans for returning the facility to service; • assist in any other activities affected by the emergency; ■ dispatch work crews and equipment to the site as needed; • restore facility to service as soon as repairs can be made safely and in accordance with established procedure; ■ evaluate the cause of failure and provide a written plan to prevent a reoccurrence of the emergency event. Emergency events will be investigated per the requirements of WPC accident investigation procedures. The investigation will determine the root cause of the emergency event and recommend any needed changes in order to prevent recurrence. The investigation will assess the effectiveness of the response team and the ERP to determine whether improvements are needed. 15 SECTION III — Annexes Annex 1. Facility and Locality Information a. Facility maps (next page) 16 Gathering System Schematic 0 O 0 X 0 0 —bat WN 0 0 K tt RABBIT BRUSH COMPR. 0 -13 tt 0 0 U pare21- ] 25 3NIl3dId.0i 3&OII1d 3NO3dId.2l 319ON b. Facility hazard and risk analysis b.1 Overview of the Facility Williams processes its own gas, as a result of this Williams has an extensive natural gas gathering system in Garfield and Rio Blanco County. The Gathering system transports over 400 million cubic feet of gas a day. The facilities operate 24 hours per day, 365 days per year. b.2 Facility Risk Evaluation A natural gas gathering system is inherently vulnerable to risk due to the constant presence of flammable gas. Fire or explosions caused by accidents or improper procedures is a serious threat to life, property and the environment and is considered to be the greatest risk to the gathering system. Following proper safety guidelines and adhering to safe -work practices can mitigate this risk. b.3 Offsite Risk Evaluation Gathering system pipe runs within close proximity to Businesses, Homes, Ranches, Utilities, Roads and other gatherings systems. As such, there exists a risk of impact or influence to the facility from offsite sources. The greatest risk to the facility is when ground is being disturbed. Anytime excavating needs to be done a one call must be made. Performing a one call is required under Colorado state law. Annex 2. Notification — included at Initial Response under Section II Annex 3. Response Management System The response team is an organized management group established to respond to an emergency and should be comprised of personnel assigned to perform the following functions (an individual may perform multiple functions, due to the size of the facility and typical staffing levels): The Incident Commander is any employee with operational responsibility (a supervisor, foreman, manager, plant operator, etc.) who has received training in emergency response. The Incident Commander must: - have access to this ERP immediately initiate procedures in the ERP and notify the immediate supervisor. - gather information on the emergency event implement actions to mitigate the emergency and coordinate and document all telephone calls, conversations, pressures, etc. pertinent to the emergency event until relieved of the responsibility by a higher level of management. The Incident Commander is responsible for managing the emergency event, and will coordinate the following activities: Establish a command post, assemble the response team and assign team member responsibilities; Assess priorities - safety first, mitigation second; - Account for location of all personnel who were in the area/facility at the start of the emergency; - Implement the Emergency Response Plan; - Provide on-site supervision of response activities; Assess and deploy needed resources and coordinate activities; 18 - Serve as or provide for an emergency event safety officer, responsible to prevent injuries and/or death; - Maintain communications with the Plant Superintendent and the Safety Engineer throughout the response; - Coordinate activities of and respond to outside agencies; Coordinate response to initial contacts with local press and government agencies; - Return the facility back to normal service; - Complete all reports associated with the emergency event; Conduct an investigation to determine the root cause of the event and develop corrective actions to prevent recurrence. The Logistics Officer obtains necessary response equipment and material to support emergency and mitigation procedures. The Administration/Finance Coordinator arranges for humanitarian assistance, lodging, meals, etc. and manages purchase orders, contacts, etc. The On -Site Safety Officer ensures site, public, and employee safety, establishes the site safety plan, coordinates environmental response, maintains proper communication with local, state, and federal emergency response organizations, or other agencies as necessary. The On -Site Coordinator/Operations Chief is responsible for oversight and management of site activities. The Planning Officer coordinates contractors and additional company personnel as necessary. The Safety Engineer will communicate reportable incidents by telephone to appropriate regulatory agencies as soon as possible. If informed of an emergency event by a private citizen, WPC personnel will obtain as much detail as possible and call a designated field employee to investigate the status. Employees at or near the scene will respond to the emergency inunediately. Facility Personnel are responsible to provide initial response and containment of the emergency. They shall: take appropriate actions to guarantee public, employee, equipment and environmental safety have completed emergency response training, including a minimum HAZWOPER incident command and technician level training (if expected to respond offensively, e.g., to stop a hazardous materials release or perform as an incident commander). Incident Commander Logistics Officer Supervises the response activities and coordination of efforts, media contacts, and compliance contacts. Obtains necessary response equipment and material to support emergency and mitigation procedures. 19 Administration/Finance Coordinator Arranges for humanitarian assistance, lodging and meals as well as manages purchase orders, contacts, etc. Planning Officer Coordinates contractors and additional company personnel as necessary Safety Engineer Communicates reportable incidents, assists with safety equipment, & control efforts. On -Site Safety Officer Ensures site, public, and employee safety, establishes the site safety plan, coordinates environmental response, maintains proper communication with agencies as necessary. On -Site Coordinator/Operations Chief Control of emergency, isolation of facility. D• rc L3in� � e�i Technician Level Responder Set up incident command post & isolation of facility. Operations Level Responder Defensive response, contact appropriate personnel. Person in Charge Coordinate support efforts. Operations Manager Rescue Personnel (All area field personnel): Medical Personnel (All personnel trained in First Aid & CPR): Other Area/Facility/Region al Personnel: Annex 4. Incident Documentation a. Post accident investigation Once a practice drill or an emergency incident has occurred, and an investigation into that incident has begun, the use of this emergency response plan along with the procedures and policies listed in it should be critiqued bases on its use, effectiveness, and its completeness. This section establishes basic questions, which will assist in this follow-up evaluation and is intended to meet compliance with OSHA standard CFR 1910.120(q)(2)(x)). 20 b. Incident history annex 5. Training and Exercises/Drills a. Training Production Supervisors or a Safety Representative will make certain that this ERP is reviewed with all new employees during their orientation (or first week of employment), and with all employees on an annual basis. At the time of orientation it will be made clear that at a minimum, the Personal Protective Equipment (PPE) required at all production facilities includes a hard hat, steel -toe shoes, safety glasses and ear protection in posted areas. Documentation of the individual employee review is required for verification of training. All records of training should be kept up to date. Each employee identified in the ERP shall be current on emergency response training that shall include the appropriate level of HAZWOPER training. Training shall cover the following: - responses for specific roles in various ER scenarios; - the use of appropriate communication systems and alternate communication methods when the plant system is disabled; - organizing and actively taking part in a response team drill; - how to locate isolation valves/shutdown controls; - how to respond to specific failures; - how to respond to media questions; - how to interact with public officials; - where to meet in the event roads to the station are impassable and/ or communications are unavailable; - appropriate control, containment, and clean-up procedures; b. Drills and Exercises A Safety Representative will schedule an annual facility drill to assess the effectiveness of the ERP and associated procedures. The drill shall consist of an emergency scenario that exercises various procedures described in the ERP. At the completion of the drill, a review shall be performed and documented. If necessary, the ERP will be revised to correct any deficiencies noted during the review. The drills, activities and review comments should be recorded on the Facility Personnel Responsibilities form provided below, and kept on file for three years. 21 EMERGENCY DRILL FORM Date of Drill: Facility Name: Attendees: Drill Scenario: Emergency Equipment/Activities Involved/Topics Covered (check if yes): SCBA: Emergency Rescue: Portable Fire Extinguishers: Plant Shutdown: Wheeled Fire Extinguishers: Equipment Shutdown: Eye/Face Equipment: Lockout/Tagout: SPCC: CPR/First Aid: HAZWOPER: Hazard Communication: Others: Contacts Made: Safety Department: Operations Manager: Others: Discussion Points/Comments: Training Conducted/Accomplished: 22 Annex 6. Response Critique and Plan Review and Modification Process Questions: The following are the types of questions that should be answered, after an incident has been mitigated or after a practice drill has been completed, in order to evaluate this Emergency Response Plan. 1. Was the Emergency Response Plan implemented in a timely and efficient manner? 2. Were evacuation alarms activated, escape routes followed and personnel accounted for? 3. Were the proper authorities and agencies notified in a timely manner? 4. Were proper procedures/checklists followed and were they effective in resolving the incident? 5. Was the correct personal protective equipment used? 6. How could this emergency response plan be changed to increase its effectiveness? 7. Was the Emergency Response Plan implemented in a timely and efficient manner? 8. Were evacuation alarms activated, escape routes followed and personnel accounted for? 9. Were the proper authorities and agencies notified in a timely manner? 10. Were proper procedures/checklists followed and were they effective in resolving the incident? 11. Was the correct personal protective equipment used? 12. How could this emergency response plan be changed to increase its effectiveness? This emergency response plan should be revised if it is determined that its use, procedures or policies are not effective in mitigating the practice drill or emergency incident. 23 EMERGENCY RESPONSE PLAN REVIEW RECORD This ERP should be considered a controlled document and treated accordingly. A Safety Representative is responsible for revising and updating the ERP on a regular basis. Name of Facility: Williams Natural Gas Pipeline Gathering Systems (Parachute Co. E&P) Date of Initial Plan Development: 3/30/06 Date of Last Review for Plan Accuracy: March 06 Date of Last Revision: March 06 Production and Facility Superintendent Name: Brad Moss Plant Superintendent Signature: Date: DATE RESPONSIBLE PARTY ACTION August 2003 Cordilleran Original Documents Summer 2004 C. Hale/ K. McDermott Annual Revision March 2006 Greg Anoia Conversion to Integrated Contingency Plan format, Annual revision 24 Annex 7. Prevention a. General Prevention Policy Incidents at the facility will be minimized through personnel training, regular safety inspections, and implementation of the policies and procedures outlined in this ERP and the WPC safety program. The primary responsibility for prevention of emergency incidents is placed on facility operations personnel. Any substantial change or addition to facility equipment or process will necessitate a review of safety procedures and a revision of applicable procedures in this ERP. b. Fire Prevention Policy Please refer to the Safety Manual for information concerning fire prevention. This is available from the Safety Engineer or on the Intranet at http://intranet.williams.com/epss/EHS/safetymanual.doc. c. Facility Safety Inspections and Audits Periodic safety audits along with regular operations and maintenance routines will be carried out with the intent of identifying and minimizing potential safety hazards and poor housekeeping practices. 25 Annex REGULATORY SUBJECT REGULATORY CITATION LOCATION IN WPC PLAN OSHA Emergency Response Program Pre -emergency planning and coordination with outside parties. 29 CFR 1910.120 (p)(8)(ii)(A) Section I 1, 2a.2, 2a.3 Personnel roles, lines of authority, training, and communication. (p)(8)(ii)(B) Sections I 1, 3b, 3c, 2a.1 Annex ib, 3, 5 Emergency recognition and prevention. (p)(8)(ii)(C) Sections I lc, I Id Annex Ib Safe distances and places of refuge. (p)(8)(ii)(D) Section II 2a.3, II 2b Annex la Site security and control. (p)(8)(ii)(E) Section II 3.b Evacuation routes and procedures. (p)(8)(ii)(F) Section II 2a.2 Annex la Decontamination procedures. (p)(8)(ii)(G) Section II 4 Emergency medical treatment and first aid. (p)(8)(ii)(H) Section II 2b.3 Emergency alerting and response procedures. (p)(8)(ii)(I) Section II 2 Critique of response and follow- up. (p)(8)(ii)(J) Annex 6 PPE and emergency equipment. (p)(8)(ii)(K) Section II 3a Emergency Planning 1910.120(q)(2) Coordination (q)(2)(i) Section II 2 Lines of authority (q)(2)(ii) Annex 3 Emergency recognition (q)(2)(iii) Section II Safe distances (q)(2)(iv) Section II 2b Security and control (q)(2)(v) Section II 3b Evacuation (q)(2)(vi) Section II 2a.3 Decontamination (q)(2)(vii) Section II 2b Medical treatment (q)(2)(viii) Section II 2b.3 Alerting and response (q)(2)(ix) Section II 1, 2 Critique of response (q)(2)(x) Annex 6 PPE and equipment (q)(2)(xi) Section II 3a Incident Command 1910.120(q)(3) Senior officer (q)(3)(i) Annex 3 Size up of conditions (q)(3)(ii) Section II 1 Emergency operations (q)(3)(iii) Section II 26 Use of SCBA (q)(3)(iv) Section II 1 Limiting access (q)(3)(v) Section II 3b Back-up personnel (q)(3)(vi) Annex 3 Safety official (q)(3)(vii) Annex 3 Safety authority (q)(3)(viii) Annex 3 Decontamination (q)(3)(ix) Section II 2b SCBA (q)(3)(x) Section II 1 OSHA Emergency Action Plans 29 CFR 1910.38 Reporting an emergency (c)(1) Section II 2a Emergency evacuation, including exit routes (c)(2) Section II 2a.2 Aimex 1 a Critical operations procedures before evacuation (c)(3) Section II 2 Accounting for employees after evacuation (c)(4) Section II 2a.3 Procedures for employees performing rescue or medical duties (c)(5) Section II 2b.3 Contacts for further information (c)(6) Section II 2a. 1 Alarm system (d) Section II 2a.2 Training (e) Annex 5 Review of ERP (f) Annex 6 Annex 9. Document Control 27 a. Plan Distribution This document is the property of the Williams Production RMT Company (WPC). Controlled copies shall be distributed at a minimum to the WPC personnel in Section II 2 a.1 and to various government agencies for the response coordination. All recipients of this Plan must complete and return the Receipt Form (See below) to WPC. This action is necessary to acknowledge receipt of the Plan and to register the document for future updates and change distributions. b. Registration Form All Recipients of the Plan must complete and return this form to register it for distribution and future change/updates. If this form is not returned, the copy of the Plan will be recalled. This is to acknowledge receipt of the Williams Parachute Creek Emergency Response Plan: Name: Company: Division: Street / P.O. Box No.: Zip Code: Retum To: Williams Production RMT Company Safety Representative 1058 County RD #2l5 Parachute, CO 81635 28 PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 16- Traffic Impact 9.07.04 (15). The pipe materials will be stored in a staging area Northeast of the proposed pipeline near station 870. This staging area has access to County Road #215 and Garden Gulch Road. It is anticipated that all of the pipe will be hauled West of this area over the construction right- of-way and via County Road #215 to its point of installation. A. We are anticipating the following traffic for pipeline construction: Station 870 Staging Area: Personal vehicle trips per day- 70 Hayes Gulch Staging Area: Truck trips per day- 12 All of these trips access County Road 215 at "ManCamp Road", a private road located at 4289 County Road #215 Parachute, CO. Pipeline construction company employees will drive their personal vehicles to the staging area and will then be transported down the right-of-way to the pipeline installation location. Each piece of heavy equipment will be hauled to the nearest crossroad to the pipeline right-of-way work area. B. We are anticipating the following traffic for the Crawford Trail Compressor Station construction: Personal vehicle trips per day- 40 Truck trips per day- 5 All of these trips access Garfield County Road #215 Page 1 of 2 C. We are anticipating the following traffic for the Compressor Station operations: Personal vehicle trips per day with one employee reviewing maintenance operations, one additional service truck. Personal vehicle trips per day- 2 Truck trips per day- 2 Please contact me with any questions. Sincerely, Phhilipp B. . Vaughan President PVCMI Page 2 of 2 unmanned Crawford Trail the facility daily and, during PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 17- Staging Areas 9.07.04 (16). The pipe materials will be stored in a staging area Northeast of the proposed pipeline near station 870. This staging area has access to County Road #215 and Garden Gulch Road. It is anticipated that all of the pipe will be hauled West of this area over the construction right- of-way and via County Road #215 to its point of installation. The Crawford Trail Compressor station will be staged from within the compressor station boundaries. Access will be gained from Garden Gulch Road via Garfield County Road #215. Please contact me with any questions. Sincerely, hilip B. Vaughan President PVCMI Page 1 of 1 PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 19- Garfield County Assessor's Maps 9.07.05 (2). Please find attached the following Garfield County Assessor Maps that start from Mile Post 0 and extends to Mile Post 16.8 near the Williams Production RMT Co. Parachute Creek Gas Plant. 1. Map 2137 2. Map 2169 3. Map 2171 These maps are provided as per the Garfield County development code. A clearer representation of the alignment and property owners can be found in Submittal Item Tab 2- Vicinity Map 9.07.04 (1). These alignment sheets have all of assessor parcel number for the property that the pipeline will be constructed through and the adjacent parcels. Please contact me with any questions. Sincerely,� in Philip B. Vaughan President PVCMI Page 1 of I R. 97 T. 1 R. 99 M. Taxing Mee No. I6-BW2 Adjoining 2195 Adjoin.) 2197 1 99-11 T8Sing Area No.0 nt a aT ¢ n50+ a a m.eae 1 ir I eT' al e e'..'.,"..v BLY. ...1 e ® ww . a ro CD rr� a e CI* �e n re CD _ ze ra d e a . �, a r> y a,. ,e rr a rF a �o r � CID f ro .. �> i. �z a r re ,e �. .a .e ry �• r> r r e rr / CD CD r I xnn f r ze za 41 CD ED Ili 0 N x �• d r r r v n az r 9 T r r / 1 •r ry v J—T" r ( "w 1 �r ...r.1. 1 r 7.11 -ors r r r 241i-o15-eo-ar r 1 32 a eur..ra r y.1 1r 01 C n tart 114199 And 2.44$ Parcel Number geed APPROVED T 6. — R%Y!N. Garfield County, Colorado Office ,the Assessor 9 e!k St? ft mo. m). Gknuwd Springs, co 8. 92 e.94s wawfidyr„,nty.an Legend - Tv Exempt - BLM - US Forest Service - Subdivision ^/ Tax Distda Boundary ^, State. Federal Highway NInterstate ao ^/ county Road /hoe Private Road, Trail BLM 00011 Survey coordinates .QJ,mer tu....aM1 t'.reiaeeeew noneem. isvm star bane, Township Locator Map 2137 Township 5 South Range 97 West 0 prniertrnn. UTM Zone 0 nnm, w . .ncli equals ism feet rte. Garfield County, Colorado Assessor's Office tog 8th sues, Sulu dna Glm¢+d Springs. CO Mc Legend Tax [remise BLM - US Forest Service Subdivision ", To, Danks Boundary ^" Ave. Federil iiighw" ^/ Ime,naa>n /bs/ county Road • BLM GCDB coordinates 217r Township 6 South Range 96 West 0 Bureau.. lITM Zone NAM?. use se. inch equals 1.59) feet PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 20- Listing of Adjacent Property Owners adjacent to or within 200 feet of the proposed right-of-way 9.07.05 (2). The following is a list of landowners adjacent to or within 200' of the proposed right-of- way for the Crawford Trail Gathering Pipeline. Private landowners are identified by Assessor's Parcel Number and public lands are listed by address. This information is accurate as of 7/17/07. Garfield County planning staff has made a determination that only surface owners are to be identified and notified regarding the proposed right-of-way. 1. Parcel #2137-153-00-009 Chevron USA, Inc. c/o Chevron Texaco Property Tax PO Box 285 Houston, TX 77001 2. Parcel #2137-223-00-003 Chevron USA, Inc. c/o Chevron Texaco Property Tax PO Box 285 Houston, TX 77001 3. Parcel #2137-253-00-007 Chevron USA, Inc. c/o Chevron Texaco Property Tax PO Box 285 Houston, TX 77001 Page I of 3 4. Parcel #2137-362-00-952 Bureau of Land Management 50629 Highway 6 &24 Glenwood Springs, CO 81601 5. Parcel #2169-214-00-026 Oxy USA Inc. Attn. Prop. Tax Dept. PO Box 27570 Houston, TX 77227-7570 6. Parcel #2169-041-00-951 Bureau of Land Management 50629 Highway 6 &24 Glenwood Springs, CO 81601 7. Parcel #2169-044-00-003 Oxy USA WTP LP 5 Greenway Plaza Ste 110 Houston, TX 77046-0506 8. Parcel #2169-101-00-020 Oxy USA Inc. 1/3 Attn. Prop. Tax Dept. PO Box 27570 Houston, TX 77227-7570 9. Parcel #2411-013-00-001 Puckett Land Company 5460 Quebec St. Ste. 250 Greenwood Vlg, CO 80111-1917 10. Parcel #2171-311-00-006 Puckett Land Company 5460 Quebec St. Ste. 250 Greenwood Vlg, CO 80111-1917 Page 2 of 3 11. Parcel #2171-194-00-954 Bureau of Land Management 50629 Highway 6 &24 Glenwood Springs, CO 81601 12. Parcel #2171-182-00-008 Chevron USA, Inc. c/o Chevron Texaco Property Tax PO Box 285 Houston, TX 77001 13. Parcel #2171-291-00-005 Puckett Land Company 5460 Quebec St. Ste. 250 Greenwood Vlg, CO 80111-1917 14. Parcel #2171-332-00-019 Williams Production RMT Company c/o Logan & Firmin 3615 S Huron St, Ste 200 Englewood, CO 80110 Please contact me with any questions. Sincerely, Philip B. Vaughan President PVCMI Page 3 of 3 Williams, EXPLORATION & PRODUCTION Williams Production RMT Company Tower 3, Suite 1000 1515 Arapahoe Street Denver, CO 80202 303/572-3900 main 303/629-8281 fax June 17, 2007 Mr. Fred Jarman Director Garfield County Building and Planning Department 108 8`i' Street, 411) floor Glenwood Springs, CO 81601 Dear Mr. Jarman: By this letter Bargath, Inc. authorizes PVCMI- Land Planning Division to represent us in any and all natters related to the Development Plan Review for Right -of -Way application for the Crawford Trail Gathering Pipeline. This includes the preparation and submission of documents associated with the land use application and representation of this application before the applicable appointed and elected boards. Sincerely, ZA.te Mr. Joseph P. Barrett Assistant Secretary Bargath, Inc. cc: Tom Fiore-Williams/Parachute via pdf Eric Miller -Williams via pdf NOV.30.2206 13:4`JF11: Corporate Data Sheet Report As of 2/6/2003 Williams Production RMT Company Joseph P. Barrett Assistant Secretary * Tam& Black AssistantSecteh¢y Stamm H. Carlin Assistant Secretary Ctsig L. Rainey Assisamr Seerelary Patti B. Rives Assistant Secretary Deborah Viehdonfer Assistant Secretary Securities Equity Common Stock pate First Authorized: 5/411001 Bate First Issued: 5/4/10111 Authorized Capital: Exchange Listing: 'Frenetic Agent CUSIP: Symhol: Comment: Current Owner(s) Williams Production Holdings ILC Beneficial Ownership: Value of Consideration: Consideration: Comments: Certificate No. 3 Former Owner(s) Certificate No. The Williams Companies, Inc. Beneficial Ownership: Value of Consideration: 51,000.00 Consideration: Comments: Direct Subsidiaries Bargath Inc. Barrett 1997 Trust Barrett Fuels Corporation 2 8/2/2001 8/2/2001 8/1/2002. 8/2/2001 8/2/2001 8/1/1002 11/21/2002 11/212002 11/21/2002 8/2%2001 8/2/2001 8/1/2002 8/2/2001 8/2/2001 8/1/2002 8/2/2001 W/2001 8/1/2002 Date Cancelled: Par Value: II Authorized: 1,000 # Outstanding: 1,000 # Issued 1,000 # in Treasury: # Cancelled: %Ownership IF Units 100% 1,00040 Nadmitil ar %.Ownership # Units 100% 1,000.00 ' 8/2/2001 Registered in Colorado Delaware Delaware r 7/30/2002 7/30/2002 %Ownership Units Heid 100.000 % 1.000 % 100.000 % L &. 1,000 100 1ii NOV. 30.20E5 8:50611 WLLLLH'o rnvu ..... Corporate Data Sheet Report AS of 2I6/?.003 Wirligma Production RMT Company Bison Royalty LLC Picea:we Production Holdings LLC Plains PetmleumGrathaiu8 Company Mason Gas Company, ILC Robson Production Company LLC Direct Owners Delaware Delaware Delaware Colorado Delaware Registered In Williams Production Holdings LLC Delaware Realstrations Colorado Charter No. Tax iD No. 100.000 50.000 % 100.000 % 10,000 100.000 % 100.000 % %Ownership Units Held 100.000 % Date End Date Duration Qualification 7/16/2001 Perpetual Agent The Corporation Company Comments: Resources Action Corp. qualified 7/16/2001. Qualification was amended in the name of Williams Pmdnction RMT Company on 8/14/2001. Delaware incorporation Agent Tim Corporation Trust Company Comments: Qualifisation Agent 'The Corporation Company, Inc. Comments: Qualification Agent C T Corporation System Comments: Montana Qualification Agent CTCorporattonSystem Comments: New Mexico Qualification Agent CT Corporation System Comments: North Dakota Qualification Agent C T Corporation System Comments: Oklahoma Qualification Agent The Corporation Company Comments: Texas Qualification Agent C T Corporation System Comments: Utah Qualification Loriisiane 5/4/2001 7/18/2001 8/13/2001 8/29/2001 12/11/2001 8/1/2002 8/17/2001 8/13/2001 8/15/2001 ti3V.30.2005 8:50RM WILLIAMS PROD RMT - NO. '791 P.5i5 Corporate Data Sheet Report As of 2/012008. Williams Production RIC Company Agent: C T Corporation System Comments: Wyoming Qualification • 7/23/2001 Pupated Agent: C T Corporation System Comments: Resources Acquisition Corp. was qualified 01171234001. Qualification was amended in tim name of Mums ProdncionRMT Company on 8/14/2001. Dory V2001 Metered Mer• tler . On Febraazy2l, 2001 Plains Pcnmlemr Company, aDelaware evaporation, Plains Petroleum Operating Company, a l� _�D_�el�a"wt cosponTioa, merged with and So BareResources Commotion. Ra/2001 Oder Name elms Name changed Bans Resources Aoaoisition Corp. to Williams Production RMT Comtism hptiool . Mcnted Matter Barna Resources Corporation merged with and term Resources Aogmstlon Corp. under the name of Whams Production RMP Company. Generated: 202003 t--P.ww PM Peat 4 ate rape .*I.O rr, ut.a • Corporate Data Sheet Report W U.JI 5 114)0 WW1 ' N0.790 P2/3 As of 1/17/2005 Bargath Inc. Incorporation: Status: Eet1tY Type: Federal ID Corporate Comment Colorado (6/30/1986) Cumet Phone it: Corporation Fax d: 84-1032091 Internal* This entity mama be dissolved due to a restriction to the Williams Production RMT Company creditAgmement with Lehman. Employees: No Tax•Year End: Fiscal Year End: Annual Meeting Date: Canadian Entity- federal False Canadian Entity- Provincial Pelee Primary Address One Williams Ceder Tnlsa, Oklahoma 74172 (United States) Bylaws Information Purpose of Business: Location of Minute Books: Location of Seal: plrectorb Cunently Authorhed: Ralph A. BM Steven J. Malcolm Officers Ralph A Hill Neal A. Buck Bryan K Ouderien Mark W. Husband Joseph N. Jaggere 111 Travis 14, Campbell Brian K. Shore -- . Joseph P. Barrett Tom B. Black Landy L. Fullmer Craig L. Rainey Minimum: Title Director Director Ma:dmum: Quorum Classes. Effective First Elected Last Elected 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 Title Effective First Elected Last Elected Senior VioePresidest Vice President Vice President Vice President Vice President Treasurer Secretary Assistant Secretary *— Assistant Secretary Controller & Assistant Treasurer Assistant Secretary 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 812/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 11/20/2003 11/20/2003 11/20/2003 11/21/2002 11/21/2002 11/21/2002 8/2/2001. 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 8/2/2001 PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 22- Construction Management Plan Please find attached the following documents that comprise the Construction Management Plan for the project: 1. Construction Management Plan- D.R. Griffin & Associates, Inc. 2. Addenda to Construction Management plan- PVCMI Please contact me with any questions. Sincerely, (� Philip B. Vaughan President PVCMI Page 1 of 1 Last Revised 7/02/07 CSB CONSTRUCTION MANAGEMENT PLAN CRAWFORD TRAIL GATHERING PIPELINE PROJECT For BARGATH, INC. %WILLIAMS PRODUCTION RMT COMPANY PARACHUTE, COLORADO Prepared By D. R. Griffin & Associates, Inc. Rock Springs, Wyoming July 2, 2007 1.0 INTRODUCTION This Construction Management Plan (CMP) was prepared to support Bargath, Inc.'s (Bargath) application to the Garfield County to construct a natural gas pipeline gathering system consisting of 17.0 miles of new 20 -inch -diameter pipeline and ancillary facilities in Garfield County, Colorado. Bargath is a gathering pipeline operating company affiliated with Williams Production RMT Company. The proposed gathering system will begin with a central gathering point at the far North end of the project, tie into several field gas receipt points along the project route, connect to the inlet and outlet of a new compressor station (Crawford Trail Compressor Station) and finish at the far South end with a connection to the existing 30" Bargath Gathering Pipeline. Gathered gas delivered to the 30" Bargath Gathering Pipeline will be delivered to Parachute Creek Gas Plant I, II and 11I facilities for processing and eventual delivery to energy consumers. Pipeline construction will primarily consist of typical trench and bury installation methods. At special road, irrigation ditch and other crossings, alternate installation methods including horizontal boring, flumed ditch and other methods will likely be used. Above ground facilities contemplated for the project include pipe riser and valve assemblies for lateral connections, side tap valves, pig launcher/receivers and end tie-in facilities. Line markers and cathodic test lead risers will also be installed at regular intervals along the pipeline routes. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 1 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB This CMP was prepared to address items listed in the Garfield County Zoning Resolution Section 9.07 Development Plan Review for Pipelines. Subject items addressed in this CMP and accompanying documents include: • Construction schedule • Project survey and pre -construction staking • Project drawings, engineering specifications and standards • Construction phase o Clearing and grading o Extraordinary Terrain Construction o Trenching o Boring o Pipe installation o Backfilling o Pressure testing o Cleanup and restoration o Residential areas and private property o Livestock issues o Health and safety o Waste disposal and sanitation • List of Figures 2.0 CONSTRUCTION SCHEDULE Construction will begin upon the receipt of the necessary agency approvals and permits, acquisition of ROW grants from affected landowners, delivery of sufficient quantities of line pipe and other materials to start the work and retention of a qualified, available and economically viable contractor to perform the work. Estimated milestone dates for construction schedule events are as follows: Event Description Milestone Date Contractor solicitation/job showing: June 25, 2007 Receive final agency approvals and permits: August 27, 2007 Award pipeline construction contract: July 24, 2007 Receive start-up quantities of line pipe: June 18, 2007 Receive start-up quantities of equipment & materials: July 18, 2007 Commence pipeline construction: September 4, 2007 Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 2 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB Event Description Milestone Date Pipeline construction substantial completion (facilities ready for operation): November 26, 2007 Purge, pack and commissioning of pipeline service: October 22, 2007 ROW clean-up, restoration and mitigation work complete: October 29, 2007 Reseeding complete: November 9, 2007 Project close out and completion: December 14, 2007 3.0 PROJECT SURVEY AND PRECONSTRUCTION STAKING Prior to the construction of the proposed project, numerous preconstruction activities will be completed. These activities include, but are not necessarily limited to, land surveying, selection of final pipeline alignment and facility locations, coordination with land owners and other affected interests, coordination with users of existing utility corridors, procurement of ROW, acquisition of permits, finalization of engineering design, procurement of materials, and selection of construction contractors. Additional surveys will be conducted for construction staking purposes. Permission will be obtained, as necessary, prior to entering properties to conduct surveys. Preconstruction staking designates the centerline and outside ROW boundaries. These and the extra construction widths will be staked and flagged at 200 -foot nominal intervals or at other appropriate spacing required by conditions. Known existing utility locations will be flagged where the pipeline parallels or crosses existing utility corridors to avoid damage and disturbance. Additional staking will be provided as needed at meter stations, pigging facilities, side valves and other appurtenant facilities. The limits for all construction staging areas and the location of access road entry points will be suitably staked and flagged. 4.0 PROJECT DRAWINGS, ENGINEERING SPECIFICATIONS AND STANDARDS Project drawings will include the following: • Pipeline alignment sheets • Mechanical flow diagram • Fabrication drawings • Crossing and permit drawings • Construction and environmental detail sheets • Other special detail drawings as needed. Documents to describe and detail the work will be encompassed in the following: Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 3 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB • Pipeline Construction Contract • Information and Notice To Bidders • Attachment A — Specification for Pipeline Construction • Attachment B — Supplemental Specification for Pipeline Construction including Project Description, Scope Of Work And Special Provisions. • Attachment C — Materials Provided by Owner • Attachment D — Contract Price Schedule • Attachment D-1 Contract Price Schedule Description including payment item description and exclusions, basis of payment and method of measurement. The controlling standards for the design and construction of the work will be the U.S. Department of Transportation Pipeline Safety Regulations 49 CFR 192 Transportation of Natural Gas and Other Gas by Pipeline: Minimum Federal Safety Standards, latest edition. Where 49 CFR 192 does not address particular design, construction or operation requirements necessary for the work, the provisions of American Society of Mechanical Engineers ASME Code B31.8 Gas Transmission and Distribution System Piping System, latest edition, will be incorporated into the work. Other applicable codes, regulations and standards will be applied to the work when referenced by the controlling 49 CFR 192 regulation and ASME B31.8 Code and as otherwise determined by the normal and customary standard of practice for this type and nature of work. The provisions of any permit or license issued by controlling agencies providing a required approval for the project will also be considered a controlling standard for the project. 5.0 CONSTRUCTION PHASE 5.1 Clearing and grading Vegetation will be cleared and the construction ROW graded to provide for safe and efficient operation of construction equipment and to provide space for temporary storage of spoil material and salvaged topsoil. In general, the width of the ROW clearings will be kept to a practical minimum to avoid undue disturbance. Brush clearing will be limited to trimming and/or crushing to avoid disturbance of root systems. All brush and other materials that are cleared will be windrowed along the ROW. Where necessary, all brush and other debris cleared will be disposed of in accordance with instructions from the jurisdictional agency or landowner and all applicable laws and regulations Topsoil removed during the clearing and grading operations will be segregated from subsoils. At a minimum, the first 6 inches of surface soil would typically be separated. These topsoils will be preserved for subsequent restoration activities on the ROW. Grading of the construction area will be performed in order to create a suitable work surface for construction vehicles and heavy equipment. On flat terrain, the work surface Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 4 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB will be leveled across the entire ROW. A bi-level work surface may be necessary in sloped areas. Sidehill cuts will be kept to a minimum to ensure resource protection and a safe, stable surface for heavy equipment use. When required by controlling agency or the landowner, construction activities will not be conducted during conditions when the soil on the ROW or access roads are too wet to adequately support construction equipment. In such instances and where construction equipment creates excessively deep ruts, construction activities will be discontinued until soil conditions improve. All survey monuments located within the ROW will be protected during construction activities. Survey monuments include, but are not limited to, General Land Office and Bureau of Land Management (BLM) Cadastral survey corners, reference corners, witness points, U.S. Coastal and Geodetic benchmarks and triangulation stations, military control monuments, and recognizable civil survey monuments. In the event of obliteration or disturbance of any of the above, the incident will be duly reported. Where General Land Office or BLM ROW monuments or references are obliterated during construction, the services of a registered land surveyor will be employed to restore the monuments in accordance with established procedures. Each such survey would be duly recorded with the appropriate county and other jurisdictional agencies. 5.2 Extraordinary Terrain Construction Approximately 1.92 miles of the project route traverses some extraordinary terrain in the descent from atop the Roan Plateau, through the Roan Plateau rim rock area, down the Crawford Trail ridge line and into the Parachute Creek valley. This area will require supplemental construction procedures in addition to the previously described typical methods for pipeline ROW clearing and grading. The extraordinary terrain in order of descending elevation and a description of supplemental construction procedures are as follows: Moderate Side Hill Alluvium — Approximately 0.18 miles of the route in this area will traverse side hill topography varying in side slope from 20% to 40%. Road construction like methods will be used in this area to construct a pipeline ROW with a 50 -foot working width, a minus 5% out slope and minus19.7% to 25.0% (average 21.0%) profile grade. This will be achieved by more or less balanced grading of excavated "Cut" on the uphill side and compacted embankment "Fill" on the down hill side. Constructed "Cut" and "Fill" out slopes will be at a rate of 3:1 to 1:1 (H/V) depending up depths encountered and the material present. The pipeline trench will be dug into the "Cut" side of the ROW and the travel and working areas will be on the "Fill" side of the ROW. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 5 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB This area is moderately to heavily covered with brush, deciduous and coniferous trees. Many of the coniferous trees and some of the deciduous ones have sufficient enough diameter and height to be considered marketable. Supplemental construction effort will be required to: clear, grub, remove and stack brush; fall, limb and buck trees; and transport and stack wood products. With the amount of vegetation present, a significant depth of topsoil will likely be present. Supplemental work beyond typical pipeline construction will be needed to strip, salvage, windrow and preserve the increased quantity of topsoil. Excavation in this area is expected to be in topsoil, alluvial soil and weathered shale. Construction effort to grade, excavate and trench in this area should be light to moderate without the need for ripping or blasting. Upon completion of pipeline installation, the ROW will be left in its as -graded form to serve as improved access and cattle drive trail for the landowner. Salvaged topsoil and vegetative debris will be brought back onto the ROW to promote reclamation. When requested by the landowner, brush and woody debris will be chipped and spread over the ROW surface. The ROW will be reseeded and restored in a manner specified by the landowner. Steep Side Hill Rim Rock — Approximately 0.14 miles of the route will then enter into, cut through and pass out of 150 -foot to 200 -foot deep rim rock ledge zone with side slopes varying from 40% to 115%. Road construction like methods will be used in this area to construct a pipeline ROW with a 40 -foot to 50 -foot working width, a minus 5% out slope and minus 19.7% to 25.0% (average 21.0%) profile grade. This will be achieved by "Full Bench" construction in which the resulting pipeline ROW is carved "notch -like" into the sides of the alluvial side hill and rim rock ledge face. The excavation will "day -light" on the low side with no "Fill" present. "Cut" out slopes on the uphill side will be at a rate of 2:1 to 1:1 (HN) for alluvial and weathered shale soils. For "Cuts" is rim rock, slopes of 1/2:1 (HN) or steeper will be obtained depending upon depth and integrity of the rock present. The pipeline trench will be dug into the inside or uphill side of the "Full Bench" ROW surface. The travel and working areas will be on the outside or downhill side of the "Full Bench" ROW. Except for where rim rock ledges and faces are present, this area is heavily covered with brush, deciduous and coniferous trees. Many of the coniferous trees and some of the deciduous ones have sufficient enough diameter and height to be considered marketable. In locations with alluvial soils, this area will likewise have significant depth of topsoil. As required for the "Moderate Side Hill Alluvium" area above, supplemental construction effort in a some what similar manner will be required to waste, remove, salvage, store and reclaim brush, timber and topsoil. However, with the area being steeply sloped and without terrain suitable for temporary storage and stock piling, a certain initial quantity of Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 6 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB this material will be disposed of and wasted permanently over the down slope edge of the work. This will continue until an adequate width of continuous pioneer ROW (10 -foot to 15 -foot width) is constructed. When this is achieved, waste, spoil, salvage and marketable materials can be moved along the route to other select locations along the pipeline ROW. Excavation in this area will encounter a sedimentary shale rim rock ledge as well as lesser amounts of topsoil, alluvial soil and weathered shale. Although a surface layer of the rim rock may be able to be ripped or removed by vibratory equipment, systematic drilling and blasting will very likely be required for a large portion of this work. Except for a very minor length in alluvial soils and weathered shale, digging of the pipeline trench will require mechanical ripping, vibratory equipment, rock saws or systematic drilling and blasting. With the area being steeply sloped, a certain initial quantity of the excavation spoil material will be disposed and wasted over the down slope edge of the work. This will continue until an adequate width of continuous pioneer ROW (10 -foot to 15 -foot width) has been constructed. When this is achieved, waste, spoil, salvage and marketable materials can be moved to other select locations along the pipeline ROW. Upon completion of pipeline installation, the ROW will be left in its as -graded form to serve as improved access and cattle drive trail for the landowner. The ROW and inside uphill "Cut" slope in this area will be largely excavated face rim rock. Replacement of topsoil and reseeding will not be performed where pure rock surfaces are present. In locations where alluvial soils and weathered shale are present, topsoil (when available) replacement, reclamation and reseeding will be undertaken. Where vegetative debris has been preserved and stored, it will be brought back onto the ROW to promote reclamation. When requested by the landowner, brush and woody debris will be chipped and spread over the ROW surface. Where soil and surface conditions are appropriate, the ROW will be reseeded and restored in a manner specified by the landowner. Steep Side Hill Alluvium — Approximately the next 0.14 miles of the route will traverse side hill topography varying in side slope from 115% to 45%. This location more or less parallels and overlays the location of the existing Crawford Pack Trail in that trail's "straight line" approach to its switch back alignment to the top of Roan Plateau. Road construction like methods will be used in this area to construct a pipeline ROW with a 40 -foot to 50 -foot working width, a minus 5% out slope and minusl9.7% to 25.0% (average 21.0%) profile grade. This will be achieved by "Full Bench" construction in an identical manner as described for the Steep Side Hill Rim Rock area. The pipeline trench will be dug into the inside or uphill side of the "Full Bench" ROW surface. The travel and working areas will be on the outside or downhill side of the "Full Bench" ROW. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 7 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB This area is heavily covered with brush, deciduous and coniferous trees. Many of the coniferous trees and some of the deciduous ones have sufficient enough diameter and height to be considered marketable. This area will likewise have significant depth of topsoil. As required for the previous areas, supplemental construction effort in a some what similar manner will be required to waste, remove, salvage, store and reclaim brush, timber and topsoil. However, with the area being steeply sloped and without terrain suitable for temporary storage and stock piling, a certain initial quantity of this material will be disposed of and wasted permanently over the down slope edge of the work. This will continue until an adequate width of continuous pioneer ROW (10 -foot to 15 -foot width) is constructed. When this is achieved, waste, spoil, salvage and marketable materials can be moved along the route to other select locations along the pipeline ROW. Excavation in this area is expected to be in topsoil, alluvial soil and weathered shale. Some rim rock may be encountered in the uphill "Cut" slope area. When this occurs and sufficient ROW width below has been obtained, excavation will stop at the rim rock face. The rim rock is expected to be sufficiently firm and stable and able to safely hold the up hill slope. Other than for any rim rock encountered, construction effort to grade and excavate the ROW and dig the pipeline trench in this area should be light to moderate without the need for ripping or blasting. With the area being steeply sloped, a certain initial quantity of the excavation spoil material will be disposed and wasted over the down slope edge of the work. This will continue until an adequate width of continuous pioneer ROW (10 -foot to 15 -foot width) has been constructed. When this is achieved, waste, spoil, salvage and marketable materials can be moved to other select locations along the pipeline ROW. Upon completion of pipeline installation, the ROW will be left in its as -graded form to serve as improved access and cattle drive trail for the landowner. When available, salvaged topsoil and vegetative debris will be brought back onto the ROW to promote reclamation. When requested by the landowner, brush and woody debris will be chipped and spread over the ROW surface. The ROW will be reseeded and restored in a manner specified by the landowner. A segment of the existing Crawford Pack Trail and portion of its switch back ascent to the top of Roan Plateau will be entirely overlain and obliterated by the proposed pipeline construction. Upon construction completion, the pipeline ROW surface will remain in near the as -built condition and serve as a replacement and improved Crawford Pack Trail ascent to the top of the Roan Plateau. "Knife Edge" Ridge Line Construction — The final approximate 1.46 miles of the extraordinary terrain route will traverse a "knife-edge" ridgeline leaving the bottom of the Roan Plateau rim rock ledge and entering the Parachute Creek valley area. This area is a Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 8 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB "broke -back" ridge line descending in elevation by about 2,100 feet over a distance of about 7,700 feet or 1.46 miles. The ridge line is broken into about six (6) visually noticeable steps of changing profile grade ranging from the steepest grade of about minus 60% to a shallowest grade of about minus 4%. The overall grade from top to bottom is about minus 27%. The top of the ridge line has a rounded crown like cross section shape with a crown width varying from 54 feet to 101 feet and having an average width of about 72 feet. The side slopes of the ridge line fall away from the crown steeply. On the left (North) side of the ridgeline, the slopes descend at a rate of minus 22% to minus 84% with an average slope of about minus 60%. On the right (South) side of the ridgeline, the slopes descend at a rate of minus 35% to minus 92% with an average slope of about minus 73%. Except for about the last 750 feet or 0.14 miles of this route segment at the bottom of the descent, the ridge line is generally parallel or coincident with the Crawford Pack Trail. The area is lightly to moderately covered with brush and deciduous trees. Clusters of both dense and sparsely placed coniferous trees are also present along the ridgeline. Generally, neither the deciduous or coniferous trees in this area are of sufficient diameter, height or species to be considered marketable. The soils along the ridge line are variable. Soils observed are minor amounts of alluvium at the higher elevation forested area, several large patches of silty sand, large areas of thin surface rock dust "soil" and significant amounts exposed shale and sandstone. To develop a ROW for pipeline construction, the crown of the ridge line will be excavated and graded to form a general uniform surface with a minimum width of 40 feet and desired width of 50 feet. Depending up topography, the graded surface will be reverse V-shaped, entirely sloped to the right or entirely sloped to left. Flexibility in the slope direction will reduced excavation volumes and provide for surface drainage during and after construction. The minimum, desired and maximum graded pipeline ROW surface cross slopes are 2%, 5% and 15%, respectively. To develop the required pipeline ROW, the top of the ridge line will be excavated below its existing elevation through out the entire length of the work. The depth of required excavation will vary from 2 feet to 16 feet with the average depth being about 8 feet. The pipeline trench will be dug along the left (North) side of the ROW and the working and travel side will be along the right (South) side. Conditions for grading, excavating and trenching are expected to be variable. Some of the area will able to be graded and excavated with bull dozers, graders and track hoes. Other areas with exposed rock and hard rock below a shallow surface layer will require ripping and vibratory equipment. Rock saws and systematic drilling and blasting may be required for extensive hard rock areas along the route. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 9 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB Owing to overall limited width and the steepness of side slopes adjoining the ridgeline, very limited space is present for storage of vegetative debris, topsoil and excavation spoil. Where such storage is available, the areas will be used first for vegetative debris and then topsoil, if any is present. The remaining amounts of debris, topsoil and all excavation spoil will be disposed of and wasted by discharging it over the right hand (South) side of the ROW. The ridge line slopes are generally steeper and less vegetated on the right hand side (South) then on the left hand side (North). Upon completion of pipeline installation, the ROW will be left in its as -graded form to serve as improved access and cattle drive trail for the landowner. When available, salvaged topsoil and vegetative debris will be brought back onto the ROW to promote reclamation. When requested by the landowner, brush and woody debris will be chipped and spread over the ROW surface. Where appropriate for the soils and surface conditions present, the ROW will be reseeded in a manner specified by the landowner. 5.3 Trenching A typical ditch will be excavated 36 to 48 inches wide and approximately 74 inches deep. The depth of the ditch will vary with the conditions encountered. The cover from top of pipe to ground level will generally be 48 inches. In extensive rocky areas, this may be reduced to between 30 and 36 inches. In all instances, pipeline burial depths will be in conformance with the requirements of 49 CFR 192 Pipeline Safety Regulations. Occasionally, the ditch will be excavated to depths greater than the general values specified. The ditch will be excavated to pass deeper beneath railroads, roads, streams, drainages, other pipelines, and other obstructions. As a minimum, the ditch will be excavated to a depth to allow a clearance of 24 inches between the project pipeline and other pipelines or underground facilities. Machine excavation will not be performed closer than 5 feet from any existing pipeline encountered in the ROW. Existing pipeline locations will be marked in the field and 48- hour prior notification given to the pipeline or other underground utility operator. Construction methods employed to excavate a trench will vary depending on soils, terrain, and related factors. Self-propelled trenching machines will be used where possible. Conventional mechanical backhoes will be used on steep slope areas, unstable soils, high water table, and where deep or wide trenches are required. Where rock or rock formations are encountered, tractor -mounted mechanical rippers or rock trenching equipment may be used to facilitate excavation. In areas where rippers or trenchers are not practical or sufficient, blasting may be employed. Strict safety precautions will be taken when blasting. Backhoes will then be used to clean the ditch after ripping or blasting. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 10 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB Unless otherwise required and agreed upon, pipeline crossings of non -surfaced, gravel, lightly traveled, and rural roads will be made using open trench "cut and cover" methods with mechanical ditching machine or backhoe. Installation at these locations, including cleanup and restoration of road surfaces, will usually be completed within one day. Provisions will be made to detour or control passage of traffic during the construction. 5.4 Boring Pipeline crossings at more heavily traveled roads, hard -surface roads, railroads, highways and similar crossings will be made by boring. Boring methods may include horizontal slip or slick boring, horizontal directional drilling or both. The horizontal slip or slick boring method requires the excavation of boring pits at both the entry and exit points of the pipe installation. The depth of the bore pits is foot or more lower than the pipe installation. Pipe is installed on a straight horizontal and vertical grade line between the bore pit faces. The installation is accomplished by auger drilling a circular hole slightly larger than the pipe being installed. The boring proceeds through a pilot pipe which is advanced by mechanical jacking behind the auger head. Excavated material is discharged through the rear of the pilot pipe. After the pilot pipe has been advanced to the end, the carrier pipe is welded to its far end. The pilot pipe and carrier pipe pair is then drawn back through the drill excavated hole. When the carrier pipe is in place, the pilot pipe is cut off to be used again for the next bore crossing. Slip boring refers to "dry" drilling. Slick boring refers to the use of drilling fluids or muds to lubricate the process and provide circulation of bore cuttings from behind the auger and out the back of the pilot pipe. Horizontal directional drilling is typically performed with the entry point at the ground surface. The exit point for this method may or may not have a bore pit but typically does not. Directional drilling does require that small or moderate size mud pits be established at both ends of the drill span. Directional drilling uses a small diameter pilot drill and drill string to establish an initial hole along the bore path. Drilling mud is circulated through the head of the pilot drill and back through the drilled hole. Drilling mud drives, lubricates and cools the drilling head, circulates cuttings out of the hole and provides hydraulic support of the hole until the carrier pipe is installed. After the pilot hole has established, reaming heads are attached to the pilot string and passed through the hole to open it up to a diameter of about 1.5 times, or less, of the carrier pipe diameter. The hole may need to be reamed several times depending upon the size of pipe to be installed and earth conditions present. When the hole has been expanded to the required size, one end of a pull block is hooked to the pilot string and the other end is welded to the carrier pipe. The carrier pipe is then pulled back through the hole to complete the drill span. Within the limits of the carrier pipe material to be installed, the bore path is typically curved in Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 11 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB vertical alignment and some times in horizontal alignment as well. For steel pipe, the rate of installed curvature is about 100 foot of radius for each nominal inch of pipe size (i.e. R = 3,000 feet for 30 -inch carrier pipe, R = 800 feet for 8 -inch carrier pipe). Drilling methods typically minimize and often avoid the disruption of traffic at road, highway and railroad crossings. Drilling methods used at crossings of excluded and restricted areas, irrigation ditches, flowing streams, wetland areas and similar cultural and environmental sensitive locations can often thoroughly avoid occupation of land crossed by the pipe, the disruption of flowing water, surface disturbance and other like problems. Drilled pipe installations are significantly expensive to install and are accordingly used selectively. Drilling methods using pressurized muds are always subject to "frac-outs" and "blow -outs" (sudden, accidental escape of drilling fluids) which present a minor but typically acceptable construction risk and environmental hazard Pipe installed by drilled methods is typically of larger wall thickness and strength than the other project line pipe. This is required to address the additional extemal forces present as result of the installation method and the crossing itself. The carrier pipe in a drilled installation is almost always treated with a sacrificial coating or abrasion resistant overlay. This is present to absorb the wear and tear of the drilling work and to guard the under -laying corrosion protection coating on the pipe itself. 5.5 Pipe installation Pipe will be shipped directly from the manufacturer by rail and truck to storage sites and then hauled by truck to the pipeline ROW. Each individual joint of pipe will be unloaded by cranes or tractors equipped with side booms and slings, and strung parallel to the ditch. Sufficient pipe for road crossings will be stockpiled at staging areas near the crossing. Stringing operations will be coordinated with trenching and installation activities in order to properly manage the construction time at a particular tract of land. Gaps will be left at access points across the ditch to allow crossing of the ROW. As construction proceeds, some of the pipe and stringing equipment will be temporarily stored at approved staging areas along the ROW. After the joints of pipe are strung along the ditch but before the joints are welded together, individual joints of the pipe will be bent to accommodate horizontal or vertical changes in direction. Such bends will be made utilizing an approved cold, smooth bending machine having a hydraulically operated shoe that makes the bend. Where the deflection of a bend exceeds the allowable design limits for field -bent pipe, shop fabricated pieces (induction or "hot bends") or trimmed segment -able forged fittings will be installed. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 12 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB After the pipe joints are bent, the pipe is lined up end-to-end and clamped into position. The pipeline will then be welded in conformance with 49 CFR Part 192, Subpart E, "Welding of Steel in Pipelines" and API 1104, "Standard for Welding Pipelines and Related Facilities," latest edition. Welds will be visually inspected by a qualified inspector and will be subject to radiographic inspection in conformance with DOT requirements. A specialized contractor certified to perform radiographic inspection will be employed to perform this work. Any defects will be repaired or removed as required under the specified regulations and standards. Project specifications will require that the pipe be externally coated with fusion bonded epoxy coating prior to delivery. After welding, field joints will be coated with either a tape wrap or shrinkable sleeve wrap. Before the pipe is lowered into the ditch, the pipeline coating will be visually and electronically inspected and any detected faults or scratches will be repaired. 5.6 Backfilling Once the pipe coating operation has been completed, the pipeline will be lowered into the ditch. Side -boom tractors will be used to simultaneously lift the pipe, position it over the ditch, and lower it in place. Inspection will be conducted to verify that minimum cover is provided, the trench bottom is free of rocks/debris/etc., external pipe coating is not damaged, and the pipe is properly fitted and installed into the ditch. In rocky areas, padding material or a rock shield will be used to protect the pipe. Backfilling will begin after the pipeline has been successfully placed in the ditch and final inspection has been completed. Backfilling will be conducted using a bulldozer, rotary auger backfiller, or other suitable equipment. Backfill will generally consist of the material originally excavated. In some cases, backfill material from other areas (borrow material) may be needed. Backfill would be graded and compacted, where necessary for ground stability, by being tamped or walked in with a wheeled or track vehicle. The soils will be replaced in a sequence and density similar to preconstruction conditions. Subsoils will be backfilled first, followed by replacement of stockpiled topsoil. Once the excavation has been filled and compacted, the topsoil would typically be crowned in a berm, 12 -inches -high or less, and tapered outward from the center and/or spread uniformly over the disturbed ROW. The material in the berm is intended to compensate for normal settling of backfilled materials. Any excess excavated materials or materials unfit for backfill will be properly disposed of in conformance with applicable laws or regulations, and landowner or jurisdictional agency requirements. Where possible, these surplus materials will be spread out over the ROW to avoid off-site disposal. Where required by controlling agencies, landowners, other situations and good cause, controlled compacted backfill will be placed at road crossings and other such locations. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 13 of 19 Job #I4466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB Backfill material to be placed shall be inspected and determined suitable for use by a qualified person. The backfill shall be placed at a controlled water content range in level uniform layers not exceeding 8 -inches compacted thickness. The resulting backfill density shall not be less than 90% maximum density (or higher if prescribed by permit, agency or landowner) as determined by an established AASHTO or ASTM procedure. 5.7 Pressure Testing The entire pipeline will be tested in compliance with 49 CFR Part 192 Pipeline Safety Regulations. This will be accomplished through hydrostatic or pneumatic testing. Prior to filling the pipeline for a hydrostatic test, each section of the pipeline will be cleaned by passing reinforced poly pigs through the interior of the line. Incremental segments of the pipeline will then be filled with fluid, pressurized, and held for the duration of the test. The length of each segment tested will depend on local topography. Typically, the pressure tests of individual segments will be conducted in sequence and the test fluid will be transferred from one segment to another. When hydrostatic methods are used, test water intake and discharge will be done in conformance with all applicable local, state, and federal requirements. Performance of these operations shall avoid adverse impacts to aquatic, wildlife, and visual resources. Water for pipeline hydrotesting will be withdrawn from and disposed of into the Williams Parachute Evaporation Facility or from other Williams production water supply and storage facilities located on top of the Roan Plateau.. Upon completion of the pressure testing, the pipeline segments will be dried using compressed dry air, pigs, spheres, or other accepted means. Once dried and fully ready for service, including tie-ins to terminal and online facilities, the pipeline will be purged of air and charged with natural gas. Upon obtaining sufficient gas volume and pressure, the line is typically ready for gas gathering service. The event is typically called the moment of "Substantial Completion." 5.8 Cleanup and Restoration Upon completion of backfilling, construction work will commence to clean up, restore, and re -vegetate the ROW. Efforts will have been taken during the prior work to minimize erosion, restore the natural ground contour, account for trench settling, reestablish plant growth, and allow natural surface drainage. As agreed with the landowner or controlling agencies, all completed construction areas and temporary access roads will be returned as nearly as possible to their original condition and service. All restoration and re -vegetation will be completed to the satisfaction of the landowners, controlling agencies and other recognized parties. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 14 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB First, any trash, brush, surplus material, or other debris will be cleared from construction areas and disposed of in an appropriate manner. The ROW will then be graded and restored to nearly preconstruction grades. Final restoration of disturbed areas will be accomplished by whatever means are most suited for the particular soils, terrain, vegetation and climate at a specific site. In general, waterbars will be constructed to prevent erosion of unconsolidated soils and provide drainage away from the disturbed area and into existing washes or drainages. Where deemed appropriate, slash will be used to control erosion. Where necessary, terracing or other erosion control techniques may be employed. Reseeding will be accomplished using seed mix or plant species approved by the landowners or controlling agencies. Seedbed preparation and seeding operations will be conducted in accordance with accepted techniques for the particular area and task. In areas with difficult reclamation problems, restoration and re -vegetation will be considered a special management problem and will be resolved in coordination with the landowner and the respective authorities involved. Advice may be sought from specialty agencies or environmental consultants to fully determine the appropriate mitigation and reclamation measures needed. Throughout the life of the project, the pipeline ROW will be monitored during routine ground inspections to evaluate the success of erosion control and re -vegetation. Attention during inspections will be given to locating riles, gullies, washouts and observing the condition of vegetation. The purpose of the monitoring will be to identify problem areas so that suitable corrective action can be decided and initiated. 5.9 Residential Areas And Private Property The construction ROW will not be located within 50 feet of a place of residence or similar use. Where residential and private property are encountered, the following practices where reasonable, prudent and beneficial will be implemented: • If the trench is left open overnight within 250 feet of a residence, place of business or similar activity, it will be fenced or barricaded to mitigate safety concerns. • Owners of private roads along the route will be notified 24 hours in advance of planned road crossings. • Private road crossings will be completed within three hours and roads will be restored to pre -construction conditions or better. • Access to and from residences, place of business and similar areas will be maintained at all times unless express authorization to the contrary is obtained from the landowner, lessee or other authorized entity. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 15 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB • Construction activities, except for pressure testing, will only occur between 7 AM and 6 PM, six days a week (Monday through Saturday). • No trench within 250 feet of a residence, place of business or similar area will be left open for more than three days. • If blasting activities are required, matting will be used to prevent damage from flying debris. Landowners, lessees and others will be notified in advance to ensure that all persons, livestock and equipment are out of the danger zone. Where it is determined by a qualified person that there are still identifiable risks in proximity of the work area, blasting will not be used. • In residential and similar areas, topsoil replacement (topsoil import) may be used as alternate to topsoil segregation. 5.10 Livestock Issues Prior to construction, concerns and issues of landowners, lessees and controlling agencies in regard to pipeline construction and livestock will be solicited and considered. Stipulations, requirements and reasonable requests developed from such inquires will be incorporated in the work. As a minimum, the following will be established for the work: • Fences crossing the ROW will be braced, cut, and temporarily fitted with gates to permit passage. • During construction, the openings will be controlled as necessary to prevent the escape of livestock. • Existing fences will be replaced and braces left in place upon completion of construction activities. • During construction, no gates or cattle guards on established roads over public or private lands will be obstructed or damaged by construction activities. • Adequate precautions will be taken to ensure that livestock and wildlife will not be prevented from reaching water sources because of open ditches or pipe strung along the ditch. Such precautions will include contacting livestock operators, providing adequate crossing facilities, or other measures as needed. • All damaged livestock facilities will be repaired or replaced to a condition as good as or better than the pre -construction condition. The final facilities shall be acceptable to the landowner, lessee or other authorized person. Temporary fences shall be installed if original fences affected by the work do not provide adequate livestock control. • Temporary fences or other barriers shall be installed if pipeline construction destroys or eliminates natural barriers. Replacement of the natural barrier is desired upon the completion of construction if practical. Permanent fencing or artificial barriers shall be used if the natural barrier cannot be reasonably restored. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 16 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB 5.11 Health and Safety The following health and safety measures shall be made a requirement of the pipeline construction work: • Special precautions shall be taken when working on pipeline segments parallel to, crossing or near high voltage overhead electric power transmission lines. These precautions shall include: o Measuring the pipe -to -ground voltages on pipe sections each day at the commencement of work, prior to work involving pipe contact and when directed by a qualified person. o Rubber tired vehicles operating on a common pipeline and powerline ROW area shall be strap grounded to mitigate capacitive coupling. Grounding shall be made using a metal chain or conductive strap connected to the vehicle frame and contacting the ground. o Vehicles shall not be refueled on or near a electric powerline ROW. o The pipeline contractor shall coordinate with affected utilities to avoid utility disruptions. • A fire prevention and suppression plan shall be developed and implemented for the work. • When required, a job specific blasting plan shall be developed and implemented for the work. • Excluding pressure testing, nighttime construction will not be permitted. Work shall not commence prior to sunrise and work shall cease at sunset. Work in residential, business and similar areas shall be limited to 7 AM to 6 PM, Monday through Saturday. • No camping will be allowed on the pipeline ROW. • When required, watering and other means of dust control will be provided. Dust control within 500 feet of residences, public roads and other gathering places will be diligently implemented and maintained. Standards and regulations pertaining to air quality emissions including particles other than dust will be made requirements of the project work. • Trenches left open overnight and within 250 feet of a residence, office building, commercial or industrial business site or similar area shall be fenced or barricaded to mitigate safety concerns. • Should a well, spring or water supply facilities be adversely affected by construction, an emergency source of potable water will be provided until mitigation can be completed. Repairs and replacement of affected facilities shall be undertaken upon completion of pipeline work in the immediate area of the damage. • Dredge or fill material of any amount will not be discharged in or near the proximity of a public water supply intakes or municipal watersheds. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 17 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB • All equipment used in the work shall be properly equipped and maintained to ensure compliance with applicable health, safety and environmental regulations. 5.12 Waste Disposal and Sanitation The following measures will be implemented and enforced in the performance of the project work: • Littering of any kind will not be allowed on the ROW. A daily litter -policing program will be employed in the work. • Construction and operating sites will be maintained in a clean and sanitary condition at all times. Collected wastes will be disposed of promptly at an approved site. • "Waste" means all discarded matter, including but not limited to, human waste, trash, garbage, refuse, oil and fuel drums, petroleum products, blasting boxes, worn out parts, abandoned equipment, leftover materials, etc. • Excess or unsuitable materials will be returned to the supplier, sold to a commercial salvage yard, turned in at commercial recycling center or delivered to public or private disposal site approved for project use. • Special implementation plans prepared for and made part of the work will be maintained and followed for the duration of the work. Such plans may include Hazardous Materials Management Plan, Spill Prevention and Countermeasure Plan and others. • Portable chemical toilets will be provided and dispersed within the project area. Their number and location will vary with the length of the project, the number of workers present and the work phase of the project. Generally, a portable toilet will be provided at each contractor yard, pipe yard or permanent staging area. A portable toilet will be available for worker use within 7.5 miles of any point along the ROW (i.e. 15 mile spacing). Other criteria not withstanding, a portable toilet will be provided for each 40 people or fraction thereof employed on the work. • Human wastes stored in portable toilets will be removed from the ROW on a regular periodic basis according to the capacity of the units and their monitored usage. Such human waste will be disposed of at an approved location in accordance with applicable laws and regulations. Construction Management Plan Crawford Trail Gathering Pipeline Bargath, lnc./Williams Production RMT Page 18 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 Last Revised 7/02/07 CSB 6.0 List of Figures Drawing Number Descri •tion J14466-9125 Typical ROW Section With Full Width Topsoil Salvage J14466-9203 Construction Activities Sequence J14466-9204 ROW Section Extraordinary Terrain Construction Sheet 1 of 4 J14466-9205 ROW Section Extraordinary Terrain Construction Sheet 2 of 4 J14466-9206 ROW Section Extraordinary Terrain Construction Sheet 3 of 4 J14466-9207 ROW Section Extraordinary Terrain Construction Sheet 4 of 4 Construction Management Plan Crawford Trail Gathering Pipeline Bargath, Inc./Williams Production RMT Page 19 of 19 Job #14466 D. R. Griffin & Associates, Inc. Rock Springs, Wyoming 307-362-5028 ±25' TO ±50' o? K 0 TOPSOIL 25' TRENCH Q R. .W. TRENCH SPOIL 25' 15'± WORKING LANE CLEARING LIMIT ♦A.4 15'± TRAVEL LANE TOPSOIL CLEARING WIDTH ±65' 25' SPOIL SIDE 50' WORKING SIDE 75' CONSTRUCTION ROW NOT TO SCALE NOTES: 1. SALVAGE TOPSOIL FULL ROW WIDTH AT LOCATIONS AND DEPTHS IDENTIFIED ON THE CONSTRUCTION DRAWINGS OR AS DIRECTED BY THE COMPANY. 2. TOPSOIL SHALL BE STOCKPILED ON BOTH SIDES OF THE ROW (AS SHOWN), ON ONE SIDE OR IN ANY CONFIGURATION APPROVED BY THE ENVIRONMENTAL INSPECTOR. KEEP TOPSOIL PILE CLEAN OF ALL CONSTRUCTION DEBRIS. MAINTAIN SEPARATION BETWEEN TOPSOIL AND SUBSOIL SPOIL PILES. 3. LEAVE GAPS IN TOPSOIL AND SPOIL PILES AT OBVIOUS DRAINAGES. DO NOT PUSH TOPSOIL INTO CREEKS OR WETLAND. DO NOT USE TOPSOIL FOR PADDING. 4. STRIP AND STOCKPILE TOPSOIL FROM FULL ROW WHERE GRADING IS REQUIRED (i.e. FOR A SIDE—HILL CUT, etc.,) TO PRODUCE A STABLE WORK AREA. Wi//l S® TYPICAL R.O.W. SECTION WITH FULL WIDTH TOPSOIL SALVAGE rigRIFFIN & ASSOCIATES, INC. REVISIONS NO. DATE DESCRIPTION DRF CHK APR 0 06/29/07 ISSUED FOR CMP EXHIBIT, BID LOB WRS CSB 1414 ELK ST., SUITE 202 ROCK SPRINGS, WY82901 (307) 362-5028 SCALE: NONE DWG No. DRG -14466-9125 DATE.: 06/29/07 PIPELINE CONSTRUCTION SEQUENCE m co N N to 2m o lig o 41 ti 2 .4 1 z g Q O m i 0 y a n ti 0 y Q O 0 Lt_ od N O 2No 0 CC R4 a D I -l O } Ld Z NyN a Q 1 0 b �_ 0 O (1) J yyLA of Ci: Q O Q Z 0 frit JNn o a Z 0 w W , W_ 1 Z > V C W a O Z~ J F Q W O O Z a 0 >' ') J Li] Q W Z j W Zt J p Q00 �.,Q(QZE O a z W_ z Z N m L.. O I- I- a W 00E-00 W Q 5rz0E5.QQ CD Q 12 W W CO I- J Ci 1 CM J - U)�I ONO In<ww O Q X o z J Q o )- o - N N) d' to t0 r CO m O N CQUISITION AND SURVEY O 0 Z tl Z O W O 0 } W H ill IS 0 O 1 ro Y Y Q Ow O = Z O oO H Q W cc — O 0 O Z O O Z Z N J (7 O a- Q I Z i W Z Z 0 Z J Z S O Q~ O O O Z O W LJ O w w t Q E- w Z (3 00000. Nm 1� N Ni 4 to l0 r of m 6 STRINGER BEAD AND HOT PASS Fill Slope 3:1 to 1:1 (HN) Depending on Depth & Material a `111�1'•i/� 15.0' Pipeline Trench ±3.5' W x 6.2' Depth Topsoil & Vegetative Clearing Limits Varies 105'to 155' Excavation Limits Varies 75' to 125' 5% Slope ±31.0' Debris Storage Combined Travel & Work Lane Native Material: Topsoil, Alluvium, Talus & Weathered Shale (Typical) 8.0' 50.0' U t7 Approximate Original Ground Line Approximate Finished Grade Line Trench Spoil ±15.0' Williams ter - 15.0' \ \\\Toopsoii &Veg/atatw/e \// Debris Storage Trench Spoil Lane Cut Slope 2:1 to 1:1 (HN) Depending on Depth & Material DETAIL SECTION VIEW TYPICAL MODERATE SIDE HILL ALLUVIAL SOIL CONSTRUCTION WITH NEAR BALANCED LEFT & RIGHT CUT & FILL AREAS SCALE: 1" = 30' ± TYPICAL R.O.W. SECTION MODERATE SIDE HILL ALLUVIUM EXTRAORDINARY TERRAIN CONSTRUCTION 1:16RIFFIN & ASSOCIATES, INC. REVISIONS NO. DATE DESCRIPTION DRF CHK APR 0 06/29/07 Issued for CMP Exhibit Garfield Co Penni LGB WRS CSB 1414 ELK ST., SUITE 202 ROCK SPRINGS, WY 82901 (307) 362-5028 SCALE: NONE DWG No. DRG -14466-9204 DATE: 06/29/07 Approximate Original Ground Line Systematic Drilling & Blasting Likely Required For "Full Bench" Rim Rock "Notch" Construction Approximate Finished Grade Line Pipeline Trench t3.5' W x 4.2' Dep h "Day -Light" Catch Point No Fill "Full Bench" Construction Varies 21.0' to 41.0' Combined Travel & Work Lane Topsoil, Alluvium, Talus & Weathered Shale on Top of Shale Rim Rock Ledge Clea ing & Excavation Limits 88.0' Nominal Varies 80.0'to 115.0' 7 5/ Slope 1 30.0' Nominal .. 16.0' 8.0' 49.0' Nominal IJ i 2 0 Shale Rim Rock Ledge 1/2:1 (HN) or Steeper Cut Trench Spoil Slope for Rim Rock Ledge Area Shale Ledge Rim Rock Trench Spoil Lane Varies 40.0' to 60.0' Williams DETAIL SECTION VIEW TYPICAL STEEP SIDE HILL RIM ROCK CONSTRUCTION WITH FULL BENCH EXCAVATION SCALE: 1"= 30'± TYPICAL R.O.W. SECTION STEEP SIDE HILL RIM ROCK EXTRAORDINARY TERRAIN CONSTRUCTION iticRIFFIN & ASSOCIATES, INC. REVISIONS NO DATE DESCRIPTION 0 06/29/07 Issued for CMP Exhibit Garfield Co Permit DRF LOB CHK APR WRS CSB 1414 ELK ST., SUITE 202 ROCK SPRINGS, WY82901 (307) 362-5028 SCALE: NONE DWG No. DRG -14466-9205 DATE.: 06/29/07 Approximate Finished Grade Line Pipeline Trench ±3.5' W x 6.2' Depth Crawford Trai (Pack TraII Where Present "Day -Light" Catch Point No Fill "Full Bench" Construction Talus Slope Alluvial Soil Area Varies 24.0'to31.0 vakst Clearing & Excavation Limits 90.0' Nominal Varies 65.0' to 105.0' Talus Slope Alluvial Soil Area Natural or Excavated Rim Rock Wall Face 1/2:1 (HN) or Steeper as Required Approximate Original Ground Line Talus Alluvial Cut Slope t 1:1 (HN) Depending / on Depth & Material Talus Alluvial Soil Area Above Rim Rock Ledge Rim Rock Ledge Area Trench Spoil 5e/ Slope �\ 7. /21.0' Nominal Combined Travel & Work Lane 46.0' Nominal Varies 40.0' to 50.0' Trench Spoil Lane Williams Rim Rock Ledge Wall DETAIL SECTION VIEW TYPICAL STEEP SIDE HILL TALUS ALLUVIUM CONSTRUCTION WITH FULL BENCH EXCAVATION SCALE: 1"= 30' ± TYPICAL R.O.W. SECTION STEEP SIDE HILL TALUS ALLUVIUM EXTRAORDINARY TERRAIN CONSTRUCTION 11€ RIFFIN & ASSOCIATES, INC. REVISIONS NO. DATE DESCRIPTION DRF CHK APR 0 06/30/07 ued for CMP Exh/b/t Garfield Co Permit LGB WRS CSB 1414 ELK ST., SUITE 202 ROCK SPRINGS, WY82901 (307) 362-5028 SCALE: NONE DWG No. DRG -14466-9206 DATE: 06/30/07 sePeA |_ 0 Vitg )} .011 .02 colnA 600013 !. ! « Malta • j so ,olifffi: » y %: n PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 22- Addenda to Construction Management Plan prepared by D.R. Griffin & Associates, Inc. A. Soil Conservation, Sedimentation and Erosion Control Plan Please refer to the attached Construction Stormwater Management Plan. B. Hazardous Materials Management & Spill Prevention Please see the attached Construction Stormwater Management Plan noted in Section A above. The SWMP plan addresses these issues in sections 4.4.2 and 4.4.2.1. Please contact me with any questions. Sincerely, Philip B. Vaughan President PVCMI Page 1 of 1 Willi s,teoe Storm Water Management Plan Crawford Trail Gathering Pipeline Crawford Trail Compressor Station Garfield County, Colorado February 2007 Storm Water Management Plan Crawford Trail Gathering Pipeline Garfield County, Colorado Crawford Trail Compressor Station Prepared for: Williams Production RMT Company 1058 County Road 215 Parachute, CO 81635 February, 2007 TABLE OF CONTENTS 1.0 INTRODUCTION 1.1 PROJECT LANDOWNER/OPERATOR 2 3 2.0 CONSTRUCTION SITE DESCRIPTION 3 2.1 SITE LOCATION 2.2 SITE AREA CHARACTERISTICS 3 3 2.2.1 Runoff Characteristics and Coefficients 3 2.3 CONTSTRUCTION SITE CHARACTERISTICS 5 2.3.1 Construction Site Area Description 5 2.3.2 Schedule of Construction Activities 6 2.3.3 Materials Handling, Loading, and Storage Areas 6 2.3.4 Adjacent Property Descriptions 6 3.0 POTENTIAL POLLUTIONS SOURCES 7 4.0 STORM WATER MANAGEMENT CONTROLS 9 4.1 SOIL EROSION AND SEDIMENT CONTROLS 9 4.1.1 Land Grading 9 4.1.2 Straw Bale Check Dams 9 4.1.3 Rock Check Dams 9 4.1.4 Soils Berms 10 4.1.5 Uphill Topsoil Stockpile/Diversion Berm 10 4.1.6 Culvert Inlet and Outlet Protection 10 4.1.7 Right of Way (ROW) Drainage Relief 10 4.1.8 Silt Fence 11 4.1.9 Straw Wattles/Straw Roles 11 4.1.10 Seeding of Disturbed Areas 12 4.1.11 Mulching 12 4.1.12 Erosion Control Blankets 13 4.2 ADDITIONAL BMP REFERENCE 14 4.3 SWMP ADMINISTRATOR 15 4.4 OTHER CONTROLS 15 4.4.1 Waste Management and Disposal 15 4.4.2 Fuels and Materials Management 15 4.4.2.1 Spill Response/Clean-Up Procedures 15 4.4.3 Construction Site Housekeeping 17 4.4.4 Off -Site Soil Tracking 17 5.0 NON -STORM WATER DISCHARGES 18 6.0 FINAL STABILIZATION 19 7.0 INSPECTIONS AND MAINTENANCE PROCEDURES 20 7.1 RECORDS MANAGEMENT 21 8.0 CERTIFICATIONS 22 8.1 OWNER/APPLICANT CERTICATION 22 8.2 CONTRACTOR/SUBCONTRACTOR CERTIFICATION 23 Appendix A Appendix B Appendix C Appendix D Appendix E LIST OF APPENDICES Crawford Trail Pipeline Map Crawford Trail Pipeline Storm Water Application Form and Permit Storm Water Inspection Form SWMP Daily Log BMP Descriptions and Installation Details 1.0 INTRODUCTION The Crawford Trail Pipeline Storm Water Management Plan (SWMP) has been written to comply with the Colorado Department of Public Health and Environment's (CDPHE) General Permit No. COR -03000 and related U.S. Environmental Protection Agency (USEPA) National Pollutant Discharge Elimination System (NPDES) storm water regulations. This SWMP addresses construction activities associated with development of the natural gas resources in the Garfield County area. The Federal Clean Water Act [Section 402(p)] requires that discharges of pollutants to waters of the United States from any point source be regulated by NPDES permits. In November 1990, the USEPA published final regulations that established application requirements for storm water associated with construction activity for soil disturbances of 5 acres or more be regulated as an industrial activity and covered by an NPDES permit. In December 1999, the USEPA published final Phase II NPDES regulations that established application requirements for storm water associated with construction activity for soil disturbances to be regulated as an industrial activity and covered by an NPDES permit. These regulations became effective July 1, 2002. Construction permits are required for oil and gas activities that disturb one or more acres during the life of the project or are part of a larger common plan of development. The CDPHE considers a common plan of oil and gas development to mean development of several well pads and/or related infrastructure in a contiguous area either during the same time period or under a consistent plan for long-term development. This Crawford Trail Pipeline SWMP is intended to be periodically updated as is deemed necessary to address planned developments, new disturbances, and other changes needed to manage storm water and protect surface water quality. 1 1.1 Project Landowner/Operator The project Landowners (listed by company and last names): Williams Production RMT Company Chevron EnCana Oil and Gas Inc. Puckett Land Company BLM The project operator is Williams Production RMT Company (Williams). Address: Williams Production RMT Company 1058 County Road 215 Parachute, CO 81635 The Williams contact person(s) for the Crawford Trail Pipeline Project are Mr. Tom Fiore and Mr. Michael Gardner. Mr. Tom Fiore Plant Manger Williams Companies Office: (970) 285-9377 Mobile:(970) 210-1641 tom.fiore@williams.com Mr. Michael Gardner Storm Water Plan Administrator Williams Companies Office:(970) 263-2714 Mobile:(970) 640-1855 Michael.Gardner@Williams.com Williams will be in charge of all aspects of this project. Contractor(s) will do the actual construction and grading but all work will be supervised by Williams and all decisions will be made by Williams. 2 2.0 CONSTRUCTION SITE DESCRIPTION 2.1 Site Location(s) Crawford Trail Pipeline: The Crawford Trail Pipeline begins at the Parachute Creek Gas Plant, within Section 33 of Township 6 South, Range 96 West of the 6th PM, Garfield County, Colorado. Through the initial 1.76 miles of Right -of -Way (ROW), the pipeline will be 24" in diameter, falling within Sections 33, 28, and 29 of Township 6 South, Range 96 West of the 6'h P.M., Garfield County, Colorado. The 24" section of the pipeline will terminate at the Jangle Knob Compressor Station (S29, T6S, R96W). The remainder of the pipeline will be 20" in diameter, and will be constructed within Sections 19 and 20 of Township 6 South, Range 96 West; Sections 26, 25, 24, 23, 22, 15, 16, 9, 4, and 5 of Township 6 South, Range 97 West; and Sections 35, 26, 23, 22, 25, and 16 of Township 5 South, Range 97 West. The pipeline terminates at the Crawford Trail Central Gathering Point (Section 16, Township 5 South, Range 97 West). The pipeline will consist of approximately 16.8 miles of ROW. The ROW will average approximately 50 feet in width during and post construction, resulting in approximately 101.82 acres of land disturbance. The town of Parachute, Colorado is the nearest population center. The following receiving waters are associated with the Crawford Trail Pipeline: Conn Creek, Crystal Creek, Doe Creek, Pearl Creek, and Parachute Creek. The ultimate receiving water is the Colorado River. Crawford Trail Compressor Station: The Crawford Trail Compressor Station will be constructed in Section 23 of Township 6 South, Range 97 West, in Garfield County, Colorado. Construction of the Crawford Trail Compressor Station will disturb approximately 14.46 acres of land. 2.2 Site Area Characteristics 2.2.1 Runoff Characteristics and Coefficient Runoff characteristics are based on site topography, soil type, and soil/vegetative cover. Drainage across the pipeline will vary along the length of the pipeline. According to the Natural Resources Conservation Service (MRCS), the soil along the length of the Crawford Trail Pipeline consists of 3 general soil units: • Parachute -Rhone Loams (5-30 percent slopes): Moderately deep, well drained, moderate sloping to steep soils on fans and high terraces. Permeability is moderate, and available water holding capacity is low to moderate. Runoff is medium/rapid, and the hazard of water erosion is very severe. • Northwater-Adel Complex (5-50 percent slopes): Deep, well drained soil commonly found on mountainsides, footslopes, and in swales. Permeability is 3 moderate, and available water holding capacity is moderate to high. Runoff is medium to rapid. Water erosion hazard is very severe, and erosion is active • Parachute-Irigul Complex (5-30 percent slopes): Moderately deep, well drained, soils commonly found on mountain ridges and convex crests. Permeability is moderate, and available water holding capacity is low. Surface runoff is slow, and the erosion hazard for these soils is moderate. The native understory throughout the project area consists mainly of slender wheatgrass, nodding brome, mountain brome, Columbia needlegrass, mountain big sagebrush, and a variety of forbs (NRCS, 2000). The native overstory canopy consists mainly of the following: One seed juniper, Utah juniper, gamble oak, and quaking aspen in limited areas. Throughout the project area, the estimated runoff coefficient will range from 0.1 to 0.3 (CDOT Stormwater Training Program Manual, 2006). 4 2.3 CONSTRUCTION SITE CHARACTERISTICS 2.3.1 Construction Site Area Description The vast majority of ground disturbance will be due to pipeline construction. Pipeline corridors are linear features having widths up to 100 feet and lengths of less than a mile to more than several miles. The width of disturbance may vary depending on construction needs and other topographical factors. After a pipeline origin, destination, and preferred route have been identified, the following construction sequence is generally followed: 1. Surveys: topographic, vegetation, wildlife, and archeology, as necessary. 2. Vegetation clearing (as necessary): If conducted, cleared vegetation will be placed in a windrow at the edge of the work area, removed from the construction site, or burned depending on landowner requirements. 3. Topsoil stripping: Topsoil is removed from the work area and stockpiled in a windrow near the edge of the work area. 4. General grading: For pipeline segments that occur in relatively rough terrain, general grading will be conducted to create a safe and workable ground surface. This is generally done to form a relatively level work surface on steep cross slopes and to reduce slopes in undulating terrain (arroyo and wash crossings). 5. Trench excavation: The trench needed for pipeline installation is generally located near the center of the ROW and is created by track-mounted excavators. The trench depth and width will vary on the number of pipes to be installed and the pipe diameter. Generally, a 4-5 foot deep trench will be excavated. Trench spoils are cast into a windrow. 6. Pipe welding and placement: The pipe pieces are laid beside the trench and welded. Long segments of welded pipe are placed within the trench by sideboom dozers. 7. Pipe bedding: Trench spoils are handled by excavators equipped with bedding boxes. The bedding boxes remove larger rocks and the fine material is placed beside, and over, the pipe to prevent potential damage to the pipe. 8. Trench backfill: Bulldozers move soil from the trench spoils windrow to backfill the trench. 9. General grading: If general grading was conducted to facilitate pipeline construction, these materials will be replaced and graded to recreate the pre- construction topography. 10. Topsoil placement: Topsoil will be moved and redistributed across the surface of the disturbed area. 11. Vegetative material replacement/removal: Based upon landowner requirements, stripped vegetation may be hauled off-site or burned in the work area. At locations where it is required, vegetative material that was stripped and saved prior to topsoil removal will be distributed across the disturbed area. Depending on the type of vegetation and method of seeding, this may occur before or after the disturbed area is seeded. 5 12. Seeding: The reclaimed disturbed area is seeded. The seed mix will vary depending on location and surface ownership and will generally match the surrounding vegetation. 13. Application of erosion stabilization: Depending on terrain, (e.g. steep slopes and drainage crossings) additional measures may be applied to provide for erosion stability of the reclaimed area. Generally, rolled product will be placed on steep slopes and rolled product and/or rock will be placed at drainage crossings. Once the pipeline has been placed in the trench and backfilled, efforts will be taken to restore the pipeline ROW to its preconstruction conditions or to mitigate for any environmental or other impacts that may have occurred during the construction process. Final stabilization is considered complete when 70 percent of the pre -construction ground cover has been re-established. 2.3.2 Schedule of Construction Activities Construction of the necessary improvements and construction of the Crawford Trail Pipeline is scheduled from June 15, 2007 to TBD. Existing and future disturbances are included in this SWMP. BMPs will be installed prior to, during, and immediately following construction as practicable, with considerations given to construction staging, safety, access, and ground conditions at the time of construction. Soil and aggregate materials will be managed so that erosion and sediment transport are minimized. Nearby drainages and water courses will be protected in all cases by appropriate measures. 2.3.3 Materials Handling, Loading, and Storage Areas Fuels, pesticides or herbicides, paints or solvents, and other industrial materials associated with construction activities must be handled and stored in a manner as to prevent storm water impacts from occurring. All liquids shall be stored in appropriate containers and properly protected form adverse weather or storm events. By following good housekeeping and best management practices (BMPs), discharges of impacted storm water can be averted. Industrial wastewater shall be properly disposed and not allowed to be discharged to storm water conveyances. 2.3.4 Adjacent Property Descriptions Surrounding land use is primarily for oil and gas exploration and production and, to a lesser extent, for seasonal livestock grazing, farming, irrigation pasture, and undeveloped land. 6 3.0 POTENTIAL POLLUTION SOURCES Potential pollution sources associated with construction sites and natural gas development include: • Sediment resulting from erosion of soil stockpiles and other disturbed areas cleared of vegetation • Leakage of fuels and lubricants from equipment and spills from re -fueling • Trash and debris from clearing activities, construction materials, and workers The most common source of pollution from pipeline construction is sediment, which can be carried away from the work site with storm water runoff and impact the water quality of a receiving water body. Clearing, grading, and otherwise altering previously undisturbed land can increase the rate of soil erosion over pre -disturbance rates. Petroleum products can also be potential storm water pollutants. These products are used in construction activities to power or lubricate equipment and include: fuel, gear oil, anti- freeze, hydraulic oil, brake fluid, and grease. Debris from material staging areas, residue from equipment cleaning and maintenance, and solid waste generated from land clearing operations and human activity (trees, brush, trash, etc.) present other potential pollution sources within the construction site. 7 4.0 STORM WATER MANAGEMENT CONTROLS Structural BMPs will be installed, inspected, and maintained as required by law (refer to section 7.0 "Inspection and Maintenance"). This SWMP will be revised as needed to address new disturbances. Depending on the type and location of new infrastructure, there may be a need for inclusion of new and alternate BMPs. In general, new development should be planned with consideration for storm water quality (e.g. minimize disturbed area and maximize distance from surface water drainages, as practicable). Other developments on the property, primarily existing and/or improved roads, not currently or specifically addressed in the SWMP will be periodically checked for erosion and drainage problems. This is especially important for ROW located within 100 feet of surface drainages or creeks. If problems are noted, they should be reported to the Site Manager and/or SWMP administrator. Problem areas may be addressed through road maintenance activities, but will likely need to be addressed through BMPs, which will be installed promptly, and added to the storm water plan as needed. 4.1 Soil Erosion and Sediment Controls The objective of erosion and sediment controls is to mitigate the release of sediments in storm water runoff. This can be accomplished through the use of structural and/or nonstructural controls. This section describes erosion and sediment controls to be used before and during construction of the Crawford Trail Pipeline to minimize possible sediment impacts in storm water runoff. The proposed erosion control features include: • Placement of any topsoil stockpiles along the upstream edge of the ROW to divert run-on. • Installation of silt fence, straw wattles, or straw bales as needed below the top of disturbed slopes (depending on slope gradient, length, and proximity to sensitive areas). • Installation of straw bale/rock check dams as needed in areas of concentrated flow. • Construction of flumes at drainage crossings. • Placement of rolled products, as needed, depending on site-specific conditions. • Permanent seeding of reclaimed pipeline corridors and areas not needed for long- term work access. The types and location of structural BMPs for each disturbed area will be determined as development progresses and construction plans are prepared. BMPs generally function to control sediment through diverting run-on water away from disturbed areas, to control runoff water generated from disturbed areas, or to control erosion by stabilizing the soil surface. 8 • Run-on controls are those features that serve to collect and/or direct run-on water away from disturbed areas. Run-on controls typically include diversion berms, channels, and flumes. • Runoff controls are those features that serve to collect and/or direct runoff water that comes from disturbed areas. These features serve to collect and/or retain runoff water and remove sediment. Runoff controls may include straw bales, check dams, silt fence, straw wattles, diversion berm/channels, catch basins, and slope drains. • Erosion controls are those features that serve to retain soil in-place. Erosion controls may include gravel surfacing, rolled products, rock protection, and vegetation. 4.1.1 Land Grading Grading techniques are a non-structural practice implemented for temporary erosion control and will be used to minimize erosion and facilitate infiltration and plant growth. Techniques should include: surface roughening, terracing slopes, water bars to shorten slope length, embankment protection, diversion berms, etc. Steeper slopes can be terraced. Excavated material will be efficiently moved to areas needing fill or stockpiled. 4.1.2 Straw Bale Check Dams Straw bale check dams, at a minimum, will be installed in areas of concentrated flow. Straw bale check dams are temporary structural controls that should be installed at suitable locations along the pipeline ROW. Straw bale check dams will be installed at the following locations: Latitude 39.609810, Longitude -108.284818 Latitude 39.565098, Longitude -108.237681 Latitude 39.562609, Longitude -108.236315 Latitude 39.562451, Longitude -108.236184 Latitude 39.540094, Longitude -108.229218 Latitude 39.539991, Longitude -108.229117 Latitude 39.534530, Longitude -108.223247 Latitude 39.502515, Longitude -108.185512 Latitude 39.503752, Longitude -108.133244 Latitude 39.500236, Longitude -108.130471 Latitude 39.493295, Longitude -108.126336 Latitude 39.493217, Longitude -108.126272 4.1.3 Rock Check Dams Rock check dams are structural controls that will be installed in areas of concentrated flow. Rock check dams may be used instead of straw bale check dams in areas where 9 steep slopes, high flows, or long-term exposure are expected to result in failure or frequent maintenance of a straw bale structure. Rock check dams are permanent BMPs, which will be installed post pipeline construction. Specific locations of rock check dams will be updated into this SWMP as pipeline construction is complete and the ROW has been backfilled. 4.1.4 Soil Berms Soil berms are structural controls that may be used to divert drainage away from areas of concern or to direct flow toward sediment control structures. Where used, soil berms shall be constructed of soil with sufficient fines to minimize flow through the berm. Berms shall be at least 18 -inches tall and will be compacted in place by wheel rolling with suitable rubber -tired, heavy equipment. 4.1.5 Uphill Topsoil Stockpile/Diversion Berm In order to divert surface runoff from up gradient areas away from the pipeline, salvaged topsoil may be placed on the uphill side of the pipeline. The topsoil stockpile may be placed and graded to form a diversion berm that will direct surface water away from the pipeline. Uphill topsoil stockpile and diversion berms are recommended in all areas of steep slopes. 4.1.6 Culvert Inlet and Outlet Protection Installation of culverts is a structural control that may be needed in certain areas where the pipeline intersects ephemeral drainages. The culvert inlet area will include a sediment sump that is at least 4 feet by 4 feet by 1.5 feet deep. The culvert outlet area will include an energy dissipation feature. Acceptable energy dissipation will include rock lining or turf reinforcement matting (TRM). Rock lining will be 2 to 4 -inch diameter rock at least 6 inches deep and having plan dimensions of at least 4 feet wide by 10 feet long. The area of rock lining should be prepared by removing 6 to 8 -inches of soil. The shallow excavation should be filled with rock and the rock secured in-place by bucket tamping or wheel -rolling. The rock outlet should be installed to promote lateral spreading of water as it flows across the rock. Culvert inlet/outlet protection will be necessary at locations TBD. As specific locations are determined, they will be updated into this SWMP. 4.1.7 Right of Way (ROW) Drainage Relief Culverts, rolling dips, terraces, or water bars are structural controls that may be used to provide drainage of water from ROW surfaces as needed to drain low areas or to reduce the amount of water flowing on the ROW surface. ROW drainage relief should be 10 provided as needed and in accordance with generally accepted practices. Depending on the location and type of drainage relief installed, additional sediment control features may be needed such as sediment removal at the inlet and erosion protection at the outlet. BMPs associated with ROW drainage relief are permanent BMPs, which will be installed post pipeline construction. Specific locations of various drainage relief BMPs will be updated into this SWMP as pipeline construction is complete and the ROW is backfilled. 4.1.8 Silt Fence Silt fences are a structural control that will be installed at the down gradient edge of the ROW and other fill slopes located within 100 feet of a surface drainage. Silt fences may also be required in areas where steep slopes below the ROW will likely result in fast flow of water from the location to nearby drainages. 4.1.9 Straw Wattles/Straw Bale Barriers Straw wattles/bales are structural controls that upon implementation will capture and keep sediment on the slopes. Straw wattles/bales are useful to temporarily stabilize slopes by reducing soil creep and sheet and rill erosion until permanent vegetation can be established. Straw bale barriers will be installed at the following locations: Latitude 39.550296, Longitude -108.233746 Latitude 39.527208, Longitude -108.211262 Latitude 39.527142, Longitude -108.211112 Latitude 39.523576, Longitude -108.205484 Latitude 39.516782, Longitude -108.202979 Latitude 39.500880, Longitude -108.167044 Latitude 39.506771, Longitude -108.136113 Latitude 39.506185, Longitude -108.133748 Latitude 39.504858, Longitude -108.131071 Latitude 39.503718, Longitude -108.133748 Latitude 39.497713, Longitude -108.128166 Straw wattles will be installed at the following locations: Latitude 39.607829, Longitude -108.263811 Latitude 39.521535, Longitude -108.203925 Latitude 39.499497, Longitude -108.180451 Latitude 39.500549, Longitude -108.164129 11 Latitude 39.505404, Longitude -108.154220 Latitude 39.505870, Longitude -108.152399 Latitude 39.507918, Longitude -108.144847 Latitude 39.507719, Longitude -108.138335 Latitude 39.507474, Longitude -108.137950 Latitude 32.505338, Longitude -108.134071 Prior to construction of the Crawford Trail Compressor Station, it will be required to install two rows of straw wattles approximately 10' beyond the edges of the northwest and southeast clearing limits of the compressor pad site. 4.1.10 Seeding of Disturbed Areas Project areas disturbed by construction will be revegetated as a non-structural control as soon as practicable following construction. Areas that will be revegetated will primarily be cut and fill slopes associated with grading activities. The permanent mix, rate, application method, and supplemental materials will be selected by the reclamation contractor. It is anticipated that this will include suitable grass species supplemented by cereal crops. 4.1.11 Mulching Long-stemmed straw or hay mulch is a non-structural control that will be applied evenly at a rate of 1.5 to 2 tons per acre and crimped into the soil. Method of application will depend on the slopes to be mulched. A mechanical crimper is limited to slopes 3:1 and flatter. Hydraulic mulching may be necessary for steeper slopes, difficult installations, and in areas with limited access. All areas will be mulched where applicable. 12 4.1.12 Erosion Control Blanket Erosion control blankets are porous fabrics and are manufactured by weaving or bonding fibers from organic or synthetic materials. Erosion control blankets are a non-structural control that is installed on steep slopes or in channels to prevent erosion until final vegetation is established. However, blankets can also be used as separators or to aid in plant growth by holding seeds, fertilizers, and topsoil in place. Erosion control blankets are permanent BMPs, which will be installed post pipeline construction. Specific locations of erosion control blankets will be updated into this SWMP as pipeline construction is complete, and the ROW is backfilled. 13 4.2 Additional BMP Reference The structural and non-structural BMPs listed below are intended to include all BMPs that may be used for gas gathering projects. However, there may be situations where a BMP is needed but not included below or project personnel may need additional information on the use, specifications, and maintenance of BMPs. Additional BMP reference will be obtained using: • "Williams Storm Water and 404 Handbook of Best Management Practices (BMPs)". The RETEC Group, Inc., January 26, 2006. • For oil and gas operations, the Bureau of Land Management and U.S. Forest Service have developed "Surface Operating Standards and Guidelines for Oil and Gas Exploration and Development," "Gold Book." The most recent version (fourth edition) of this is available on the internet at: http://www.blm.gov./bmp/GoldBook Draft v12.pdf. • For Construction BMPs the Urban Drainage and Flood Control District, a Colorado Front Range group of city and county agencies has developed a BMP manual that is available on the internet at: http://swcc.state.al.us/pdf/ASWC June 2003 Alabama_ Handbook Construction E&S Control.pdf. • For construction BMPs and surface stabilization methods, the Alabama Soil and Water Conservation Committee has developed "Erosion Control, Sediment Control and Storm Water Management on Construction Sites and Urban Areas, Volume 1 Developing Plans and Designing Best Management Practices." This information is available on the internet at: http://www.blm. gov/bmp/field%20gu ide.htm • For access roads, the US Forest Service and Bureau of Land Management have developed "Low -Volume Roads Engineering, Best Management Practices Field Guide," which is available on the internet at: http://www.blm.gov/bmp/field%20guide.htm 14 4.3 SWMP Administrator The SWMP Administrator is responsible for: • Authority for dedicating the necessary financial and human resources to implement the SWMP • Implementing spill clean ups • Notifying local authorities and local residents in the event that a significant release of storm water occurs that leaves the location • Signatory authority • Coordinating various stages of plan development and implementation; • Conducting inspections • Coordinating employee training programs • Maintaining all records • Making certain that all appropriate reports are submitted as necessary • Coordinating the implementation of the preventive maintenance program • Supervising spill response and housekeeping measures 4.4 Other Controls 4.4.1 Waste Management and Disposal Pipeline construction and development will generate various other wastes. Other wastes may include the following: • Trees and shrubs from clearing operations • Trash and debris from construction materials and workers • Sanitary sewage Each of these wastes will be managed so as to not contribute to storm water pollution. Trees and shrubs will be stacked along the downgrading slope to provide additional sediment control. Construction trash and debris will be collected in containers and hauled off-site for disposal in suitable landfills. Sanitary waste will be contained in portable toilets or other storage tanks with waste materials and regularly pumped and transported off-site for disposal at approved facilities. 4.4.2 Fuels and Materials Management Fuels and materials management will comply with Williams' policy and procedures. 4.4.2.1 Spill Response/Clean-Up Procedures In the event a spill occurs during construction, immediate spill response will consist of the following procedures: • Stopping the spill • Stopping the spill from leaving the ROW • Contact a Williams Environmental Coordinator immediately 15 Petroleum Products Petroleum products which may be present at the construction site include: gasoline, diesel fuel, lubricant oils, hydraulic oils, used oils, and solvents. Gasoline and diesel fuel will be stored in portable storage tanks with secondary containment. Lubricant, hydraulic, and miscellaneous oils and solvents will be stored in 55 -gallon or smaller containers. Pollutants from petroleum products used during construction activities adhere easily to soil particles and other surfaces. In case of a spill or leak, soils contaminated with petroleum products will be contained and removed to a proper disposal site. Proposed soil erosion and sediment control practices will aid in retention of spills or leaks. Use of secondary containment and drip pans will reduce the likelihood of spills or leaks contacting the ground. Proposed maintenance and safe storage practices will reduce the chance of petroleum products contaminating the pipeline ROW. Oil wastes such as crankcase oil, cans, rags, and paper containing oils will be placed in proper receptacles and disposed of or recycled. An additional source of petroleum contamination is leaks from equipment and vehicles. Routine daily inspections will be conducted to identify leaks and initiate corrective actions, if needed. The following guidelines for storing petroleum products will be used: • All product containers will be clearly labeled. • Drums will be kept off the ground within secondary containment and stored under cover if needed. • Fuel tanks will be stored within secondary containment. • Lids of drummed materials will be securely fastened. • Emergency spill response procedures will be available on-site. Persons trained in handling spills will be on call at all times. • Spill clean up and containment materials (absorbent, shovels, etc.) will be easily accessible. Spills will be immediately cleaned up and contaminated materials will be properly stored on site until they can be disposed of in accordance with applicable regulations. • Storage areas and containers will be regularly monitored for leaks and repaired or replaced as necessary. Personnel should be reminded about proper storage and handling of materials during weekly subcontractor safety meetings. Other Chemicals Products Management Additional materials may be used and stored on site for use during construction of the pipeline. These materials will be stored appropriately and managed to minimize spills and leaks. Storage areas will be regularly inspected and any minor spills or leaks will be cleaned up immediately. Materials Management The construction contractor will maintain a lay -down or staging area for equipment and materials storage on site. These areas will be maintained with good housekeeping and will be inspected on a regular basis for spills, leaks, and potential contamination. 16 4.4.3 Construction Site Housekeeping Housekeeping will consist of neat and orderly storage of materials and containerized fluids. Wastes will be temporarily stored in sealed containers and regularly collected and disposed of at suitable off-site facilities. If spills occur, prompt cleanup is required to minimize any co-mingling of waste materials with storm water runoff. Routine maintenance will be limited to fueling and lubrication of equipment. Drip pans will be used during routine fueling and maintenance to contain spills or leaks. Any waste product from maintenance will be contained and transported off site for disposal or recycling. There will be no major equipment overhauls conducted on site. Equipment will be transported off site for major overhauls. Cleanup of trash and discarded materials will be conducted at the end of each work day. Cleanup will consist of patrolling the ROW, access areas, and other work areas to pickup trash, scrap debris, other discarded materials, and any contaminated soil. These materials will be disposed of appropriately. 4.4.4 Off -Site Soil Tracking Off-site soil tracking will be limited by installing a tracking pad at the point of beginning and the point of termination of the project. The tracking pad will consist of gravel/cobble stone with a 4" to 6" diameter average. The pads will be as wide as the ROW (approximately 100 feet), and 70 feet long. Maintenance of the tracking pads will occur as necessary and additional gravel will be applied. 17 5.0 NON -STORM WATER DISCHARGES No non -storm water discharges are anticipated from the project. This project intersects three perennial streams; however, these streams will be flumed briefly until construction surrounding them is completed. Possible exceptions include fire prevention/suppression and dust control activities. 18 6.0 FINAL STABILIZATION Areas which have been disturbed are considered to be stabilized when a uniform vegetative cover with a density of 70 percent of the pre -disturbance levels has been established or when an equivalent permanent, physical erosion reduction method is in place. Areas which are not used for facilities, access roads, material storages yards, or other work areas will be stabilized with vegetation. Areas that are stabilized with vegetation will be considered to have achieved final stabilization when a uniform stand of vegetation with a density of at least 70 percent of the pre -disturbance has been established. Other Areas that may include facilities, access roads, material storage yards, and other work areas will be stabilized with the use of permanent, physical erosion reduction methods. 19 7.0 INSPECTIONS AND MAINTENANCE PROCEDURES To meet requirements of the General Permit, inspection and maintenance of erosion and sediment controls must occur during the project. Continued inspection and maintenance is required for specific structures after construction is completed. The inspection program will include the following: 1. A qualified person familiar with the SWMP and control measures will conduct the inspections. 2. Inspections will cover these areas of the construction site: • Disturbed areas without stabilization • Material storage areas • Check dams • Silt fence • Surface water diversions • Down -gradient areas • New access roads • Locations where vehicles enter or exit the site. 3. Inspections will occur at least once every 14 calendar days and after a significant precipitation or snow melt event that could cause erosion. 4. Permanently stabilized areas will be inspected at least once per month. 5. A log of inspections will be maintained. 6. Disturbed areas and material storage areas that are exposed to precipitation will be inspected for evidence of pollutants entering nearby drainages. 7. Check dams, silt fences, and other BMPs will be inspected for evidence of deterioration, under -cutting, and build up of sediment. Sediment will be removed when it has built up one-third to one-half the height of the straw bales or silt fence. 8. Roads used for vehicle access will be inspected for evidence of off-site sediment transport. MAINTENANCE Maintenance will include prompt repairs and/or adjustments to any erosion and sediment control structures that are deteriorating or found to be performing inadequately. Repairs should be made as soon as possible and prior to the next anticipated storm event. Williams or designated contractor(s) will maintain, on-site, all materials necessary to make any reasonably expected repairs such as silt fence, straw bales, and stakes. 20 7.1 Records Management All inspection forms and revisions to the Crawford Trail Pipeline will be maintained and documented on the inspection log. The completed inspection forms will be placed into the SWMP upon inspection. The records management program will include the following: 1. Following each inspection, the SWMP will be modified as necessary to include additional controls designed to correct identified problems. 2. An inspection report summarizing the scope of the inspection, the name of the person conducting the inspection, date of inspection, and observations relating to the implementation will be prepared. Inspection reports will be retained for at least 3 years from the date that the site reaches final stabilization. 3. Actions taken to modify any storm water control measure will be recorded and maintained with the SWMP. 4. If no deficiencies are found during the inspection, the report will contain certification that the site is in compliance with the SWMP. Signatures will be in accordance with the General Permit Conditions, Part E. 1. 21 8.0 CERTIFICATIONS 8.1 Owner/Applicant Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Name: Mr. Tom Fiore Title: Plant Manager Date: Operator Name and Address: Williams Production RMT Company 1058 County Road 215 Parachute, CO 81635 Site Name and Location: SWMP Prepared by: Crawford Trail Pipeline Township(s) 5 &6 South Range(s) 96 and 97 West Garfield County, Colorado Crawford Trail Compressor Station Section 23 Township 6 South Range 97 West Garfield County, Colorado HRL Compliance Solutions, Inc. 216 North Avenue, Suite #1 Grand Junction, CO 81501 Phone: 970.243.3271 22 8.2 Contractor/Subcontractor Certification All contractors and subcontractors that will perform construction activities that could impact storm water will be familiar with the SWMP and will sign the following certification. Contractor Certification I certify under penalty of law that I understand the terms and conditions of the SWMP and associated CDPS General Permit that authorizes storm water discharges associated with construction activity identified as part of this certification. Signature: Name: Title: Date: Representing: Company: Address: Address: Phone: 23 APPENDIX A CRAWFORD TRAIL PIPELINE MAP APPENDIX B CRAWFORD TRAIL PIPELINE STORM WATER APPLICATION FORM AND PERMIT APPENDIX C STORM WATER INSPECTION FORM Williams Storm Water Inspection Checklist Project Name Project ID Unique ID Field Name Site Type Permit Name Permit Date Proposed Start Date Pipeline Description Latitude Longitude Township Range Section Description 2 Inspection Date Inspector Inspection Type Comments Comment 1 Acres Disturbed Acres Subject to Interim Reclamation Acres Restored Distance to Receiving Water Name of Receiving Water(s) Type Estimated Runoff Coefficient Comment 1 Best Management Practices B M P # Type Maintenance Required Date Maintenance Completed Comment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Processing Equipmen # of Tanks # of Separators Freeboard in Secondary Containment Storm Water in Secondary Containment Comment N/A N/A N/A N/A None Secondary Wells On Si None None None None None None None None None None Other Equipment Type of Equipment Comment None None None None None None Housekeeping/Site Trash Materials Handling Spills or Leaks Vegetation Seed Mix Date Planted 70% Revegetated Comment TBD TBD TBD TBD Files Type of File Location Site Complies With Storm Water Standards (Yes or No) Comments: APPENDIX D SWMP DAILY LOG Date: Storm Water Management Plan (SWMP) Daily Log Name of Person Completing Form: Project Activities Detailed Description Meetings: Date: Purpose: Attendees: Comments: Items Discussed: Instructions Given: Maintenance Activities Contractor: Phone: Comments Items Completed Spills and Discharge Record Description of Spill or Discharge (type, qty, etc) Describe Mitigation Activities Record of Reporting Describe nature of report and to whom it was made APPENDIX E BMP DESCRIPTIONS AND INSTALLATION DETAILS Silt Fence Description and Purpose A silt fence is made of a filter fabric that has been entrenched, attached to supporting poles, and sometimes backed by a plastic or wire mesh for support. The silt fence detains sediment -laden water, promoting sedimentation behind the fence Implementation A silt fence is a temporary sediment barrier consisting of filter fabric stretched across and attached to supporting posts, entrenched, and, depending upon the strength of fabric used, supported with plastic or wire mesh fence. Silt fences trap sediment by intercepting and detaining small amounts of sediment -laden runoff from disturbed areas in order to promote sedimentation behind the fence. Silt fences are preferable to straw bale barriers in many cases. Laboratory work at the Virginia Highway and Transportation Research Council has shown that silt fences can trap a much higher percentage of suspended sediments than can straw bales. While the failure rate of silt fences is lower than that of straw bale barriers, there are many instances where silt fences have been improperly installed. The following layout and installation guidance can improve performance and should be followed: • Use principally in areas where sheet flow occurs. • Don't use in streams, channels, or anywhere flow is concentrated. Don't use silt fences to divert flow. • Don't use below slopes subject to creep, slumping, or landslides. • Select filter fabric that retains 85% of soil by weight, based on sieve analysis, but that is not finer than an equivalent opening size of 70. • Install along a level contour, so water does not pond more than 1.5 ft at any point along the silt fence. • The maximum length of slope draining to any point along the silt fence should be 200 ft or less. The maximum slope perpendicular to the fence line should be 1:1. Silt Fence Implementation Continued • Provide sufficient room for runoff to pond behind the fence and to allow sediment removal equipment to pass between the silt fence and toes of slopes or other obstructions. About 1200 ft2 of ponding area should be provided for every acre draining to the fence. • Turn the ends of the filter fence uphill to prevent storm water from flowing around the fence. • Leave an undisturbed or stabilized area immediately down slope from the fence where feasible. • Silt fences should remain in place until the disturbed area is permanently stabilized. Materials • Silt fence fabric should be woven polypropylene with a minimum width of 36 in. and a minimum tensile strength of 100 Ib force. The fabric should conform to the requirements in ASTM designation D4632 and should have an integral reinforcement layer. The reinforcement layer should be a polypropylene, or equivalent, net provided by the manufacturer. The permittivity of the fabric should be between 0.1 sec -I and 0.15 sec -1 in conformance with the requirements in ASTM designation D4491. • Wood stakes should be commercial quality ]umber of the size and shape shown on the plans. Each stake should be free from decay, splits or cracks longer than the thickness of the stake or other defects that would weaken the stakes and cause the stakes to be structurally unsuitable. • Staples used to fasten the fence fabric to the stakes should be not less than 1.75 in. long and should be fabricated from 15 gauge or heavier wire. The wire used to fasten the tops of the stakes together when joining two sections of fence should be 9 -gauge or heavier wire. Galvanizing of the fastening wire will not be required. • There are new products that may use prefabricated plastic holders for the silt fence and use bar reinforcement instead of wood stakes. If bar reinforcement is used in lieu of wood stakes, use number four or greater bar. Provide end protection for any exposed bar reinforcement. Straw Bale Barrier Description and Purpose A straw bale barrier is a series of straw bales placed on a level contour to intercept sheet flows. Straw bale barriers pond sheet- flow runoff, allowing sediment to settle out. Implementation A straw bale barrier consists of a row of straw bales placed on a level contour. When appropriately placed, a straw bale barrier intercepts and slows sheet flow runoff, causing temporary ponding. The temporary ponding provides quiescent conditions allowing sediment to settle. Straw bale barriers also interrupt the slope length and thereby reduce erosion by reducing the tendency of sheet flows to concentrate into rivulets, which erode rills, and ultimately gullies, into disturbed, sloped soils. Straw bale barriers have not been as effective as expected due to improper use. These barriers have been placed in streams and drainage ways where runoff volumes and velocities have caused the barriers to wash out. In addition, failure to stake and entrench the straw bale has allowed undercutting and end flow. Materials • Straw Bale Size: Each straw bale should be a minimum of 14 in. wide, 18 in. in height, 36 in. in length and should have a minimum mass of 50 lbs. The straw bale should be composed entirely of vegetative matter, except for the binding material. • Bale Bindings: Bales should be bound by steel wire, nylon or polypropylene string placed horizontally. Jute and cotton binding should not be used. Baling wire should be a minimum diameter of 14 -gauge. Nylon or polypropylene string should be approximately 12 -gauge in diameter with a breaking strength of 80 lbs force. • Stakes: Wood stakes should be commercial quality lumber of the size and shape shown on the plans. Each stake should be free from decay, splits or cracks longer than the thickness of the stake, or other defects that would weaken the stakes and cause the stakes to be structurally unsuitable. Steel bar reinforcement should be equal to a #4 designation or greater. End protection should be provided for any exposed bar reinforcement. Check Dams Description and Purpose A check dam is a small barrier constructed of rock, gravel bags, sandbags, straw bales, fiber rolls, or reusable products, placed across a constructed swale or drainage ditch. Check dams reduce the effective slope of the channel, thereby reducing the velocity of flowing water, allowing sediment to settle and reducing erosion. Implementation General Check dams reduce the effective slope and create small pools in swales and ditches that drain 10 acres or less. Reduced slopes reduce the velocity of storm water flows, thus reducing erosion of the swale or ditch and promoting sedimentation. Use of check dams for sedimentation will likely result in little net removal of sediment because of the small detention time and probable scour during longer storms. Using a series of check dams will generally increase their effectiveness. A sediment trap may be placed immediately upstream of the check dam to increase sediment removal efficiency. Design and Layout Check dams work by decreasing the effective slope in ditches and swales. An important consequence of the reduced slope is a reduction in capacity of the ditch or swale. This reduction in capacity must be considered when using this BMP, as reduced capacity can result in overtopping of the ditch or swale and resultant consequences. In some cases, such as a "permanent" ditch or swale being constructed early and used as a "temporary" conveyance for construction flows, the ditch or swale may have sufficient capacity such that the temporary reduction in capacity due to check dams is acceptable. When check dams reduce capacities beyond acceptable limits, there are several options: • Don't use check dams. Consider alternative BMPs. • Increase the size of the ditch or swale to restore capacity. Maximum slope and velocity reduction is achieved when the toe of the upstream dam is at the same elevation as the top of the downstream dam. The center section of the dam should be lower than the edge sections so that the check dam will direct flows to the center of the ditch or swale. Check dams are usually constructed of rock, gravel bags, sandbags, and fiber rolls. A number of products manufactured specifically for use as check dams are also being used, and some of these products can be removed and reused. Check dams can also be constructed of logs or lumber, and have the advantage of a longer lifespan when compared to gravel bags, sandbags, and fiber rolls. Straw bales can also be used for check dams and can work if correctly installed; but in practice, straw bale check dams have a high failure rate. Check dams should not be constructed from straw bales or silt fences, since concentrated flows quickly wash out these materials. Rock check dams are usually constructed of 8 to 12 in. rock. The rock is placed either by hand or mechanically, but never just dumped into the channel. The dam must completely span the ditch or swale to prevent washout. The rock used must be large enough to stay in place given the expected design flow through the channel. Log check dams are usually constructed of 4 to 6 in. diameter logs. The logs should be embedded into the soil at least 18 in. Logs can be bolted or wired to vertical support logs that have been driven or buried into the soil. Gravel bag and sandbag check dams are constructed by stacking bags across the ditch or swale, shaped as shown in the drawings at the end of this fact sheet. Manufactured products should be installed in accordance with the manufacturer's instructions. If grass is planted to stabilize the ditch or swale, the check dam should be removed when the grass has matured (unless the slope of the swales is greater than 4%). The following guidance should be followed for the design and layout of check dams: • Install the first check dam approximately 16 ft from the outfall device and at regular intervals based on slope gradient and soil type. • Check dams should be placed at a distance and height to allow small pools to form between each check dam. • Backwater from a downstream check dam should reach the toes of the upstream check dam. • A sediment trap provided immediately upstream of the check dam will help capture sediment. Due to the potential for this sediment to be re -suspended in subsequent storms, the sediment trap must be cleaned following each storm event. • High flows (typically a 2 -year storm or larger) should safely flow over the check dam without an increase in upstream flooding or damage to the check dam. • Where grass is used to line ditches, check dams should be removed when grass has matured sufficiently to protect the ditch or swale. • Gravel bags may be used as check dams with the following specifications: Materials Gravel bags used for check dams should conform to the requirements of gravel bag berms. Sandbags used for check dams should conform to sandbag barrier guidelines. Fiber rolls used for check dams should conform to fiber roll requirements. Straw bales used for check dams should conform to straw bale barrier requirements. Fiber Rolls Description and Purpose A fiber roll consists of straw, flax, or other similar materials bound into a tight tubular roll. When fiber rolls are placed at the toe and on the face of slopes, they intercept runoff, reduce its flow velocity, release the runoff as sheet flow, and provide removal of sediment from the runoff. By interrupting the length of a slope, fiber rolls can also reduce erosion. Implementation Fiber Roll Materials • Fiber rolls should be either prefabricated rolls or rolled tubes of erosion control blanket. Assembly of Field Rolled Fiber Roll • Roll length of erosion control blanket into a tube of minimum 8 in. diameter. • Bind roll at each end and every 4 ft along length of roll with jute -type twine. Installation • Locate fiber rolls on level contours spaced as follows: o Slope inclination of 4:1 (H:V) or flatter: Fiber rolls should be placed at a maximum interval of 20 ft. o Slope inclination between 4:1 and 2:1 (H:V): Fiber Rolls should be placed at a maximum interval of 15 ft. (a closer spacing is more effective). o Slope inclination 2:1 (H:V) or greater: Fiber Rolls should be placed at a maximum interval of 10 ft. (a closer spacing is more effective). • Turn the ends of the fiber roll up slope to prevent runoff from going around the roll. • Stake fiber rolls into a 2 to 4 in. deep trench with a width equal to the diameter of the fiber roll. o Drive stakes at the end of each fiber roll and spaced 4 ft maximum on center. o Use wood stakes with a nominal classification of 0.75 by 0.75 in. and minimum length of 24 in. • If more than one fiber roll is placed in a row, the rolls should be overlapped, not abutted. Culvert Inlet/Outlet Protection /;. * i' Y 0_1p% Ile a. Normal metal culvert installation using riprap around the inlet and outlet of culverts. Also use geotextile (filter fabric) or gravel filter beneath the riprap for most Installations. (Adapted from Wisconsin's Foreshy Best Management Practice for Water Quati n 1995) Description and Purpose Culvert inlet/outlet protection typically consists of gravel riprap that act as energy dissipation features, thus allowing for the settling of sediments, while preventing piping form occurring at the inlet or outlet. Riprap should consist of small to medium gravels that layered to achieve uniform density. Inspection and Maintenance • Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two-week intervals during the non - rainy season. • Repair or fill any unnecessary gaps or holes in the inlet/outlet of culverts. 1' 'prang al stops' Erosion Control Blankets bury upper Moo of mattlnd M Imum IInIk of mulched ansa Meed m•ttbi!! war WS* all l tap d muldhnd area 1'twyra d•Lples 3 minlnum 4'minbNm / mash Sped a cater drvWSy even d mdnbnum Description and Purpose Made out of environmentally friendly, biodegradable material, erosion control blankets are installed on disturbed slopes that are requiring stability. They stabilize slopes, and provide for an increased water holding capacity, which ultimately increased the rate and establishment of desired vegetative cover. Implementation Erosion control blankets should installed smoothly on the surface of the soil, loose enough to allow for vegetation establishment. The blankets are to be in complete contact with the soil to prevent any tenting. The upslope end of the blanket should be buried in a trench with ideal dimensions of 6"x6". Where one blanket ends and another begins, there should be 4-6 inches of overlap. Inspection and Maintenance • Inspect blankets prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two-week intervals during the non - rainy season. • Repair any unnecessary gaps or holes in the blankets. • Inspect to make sure that there is uniform contact with the soil. PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 23- Response letter regarding Development Plan Review Standards and Criteria for Approval. 9.07.06 Please find below a response to each of the checklist items that are required to be reviewed by the Garfield County Building and Planning Department. A. Right-of-way locations related to perimeters of surface property ownerships. 9.07.06 (1) Please see Tab 2- Vicinity Map- 9.07.04 (1) B. Colorado Oil and Gas Conservation Commission Rules and Regulations, Section 802, Noise Abatement. 9.07.06 (2) Please see attached a "Computer Noise Model Prediction and COGCC Compliance Report for New Gas Compression Equipment at Crawford Trail Compressor Station". This report is dated 6/22/07 and was prepared by HFP Acoustical Consultants, Inc. The report accounts for the Phase 2 expansion of the compressor stations as well. In regards to the pipeline installation, we will follow the COGCC regulations in regards to rule 802 and maximum noise levels. Important Note: Via this application to Garfield County, we are applying for approval for the expansion of the compressor building at Crawford Trail Compressor Station to a maximum size of 75'-0" wide x 275'-0" long. This would allow for the building/compressor expansion to occur without further Garfield County land use approvals. A Garfield County building permit would, of course, need to be applied for and obtained. Page 1 of 3 C. Minimize visual impact and disturbance of the land surface. 9.07.06 (3) We have located the new 20" line in existing, disturbed right-of- way to limit surface disturbance to previously disturbed areas. All equipment, above -ground piping and exterior materials on the buildings will be painted in "Desert Brown" color. An 8 ft. chain link fence with three strands of barbwire at the top will be installed at the exterior of the compressor station for security purposes. The Crawford Trail Compressor Station is located on Puckett Land Co. property up Parachute Creek on the plateau ans should not be visible from the valley floor. D. Access Points to public roads. 9.07.06 (4) Please see Tab 16- Traffic Impact- 9.07.04 (15) E. Impact on endangered species. 9.07.06 (5) Please see Tab 11- Sensitive Area Survey- 9.07.04 (10) F. Air contaminant emissions. 9.07.06 (6) Bargath, Inc. agrees to meet the control provisions set forth by the Colorado Air Quality Control Program, Title 25, Article 7, C.R.S. Please see the APCDs and the Fugitive Dust Permit in Tab 7- 9.07.04 (6). G. Compliance with Colorado State Public Health and Environment, Water Quality Control standards. 9.07.06 (7) Please see Tab 7- Regulatory Permit Requirements- 9.07.04 (6). Bargath, Inc. has received a CDPS permit from the CDPHE for the proj ect. Page 2 of 3 H. Compliance with Garfield County Individual Sewage Disposal System regulations. 9.07.06 (8) There will not be ISDS installed at this project. Please see Tab 22 - Construction Management Plan- Page 23- Waste Disposal and sanitation to note the use of portable chemical toilets for human waste during the construction of the pipeline and for the Crawford Trail Compressor Station. I. Reclamation plan. 9.07.06 (9) Please see Tab 13- Revegetation Plan- 9.07.04 (12) J. Abandoned pipeline removal. 9.07.06 (10) Abandoned pipeline will be abandoned as per the most current Colorado Oil & Gas Conservation Commission regulations at the time of abandonment. Please contact me with any questions. Sincerely, Philip �au�� President PVCMI Page 3 of 3 HFP ACOUSTICAL CONSULTANTS INC. Submitted by: HFP Acoustical Consultants Inc. HFP File 6259-1 June 22, 2007 6001 Savoy Drive, Suite 115 Phone: 713.789.9400 #1140, 10201 Southport Road S.W. Phone: 403.259.6600 Houston, Texas 77036 Fax: 713.789.5493 Calgary, Alberta, Canada T2W 4X9 Fax: 403.259.661 1 Computer Noise Model Prediction and COGCC Compliance Report for New Gas Compression Equipment at Crawford Trail Compressor Station (Williams) Prepared for Enviro Noise Control Group Submitted by: HFP Acoustical Consultants Inc. HFP File 6259-1 June 22, 2007 6001 Savoy Drive, Suite 115 Phone: 713.789.9400 #1140, 10201 Southport Road S.W. Phone: 403.259.6600 Houston, Texas 77036 Fax: 713.789.5493 Calgary, Alberta, Canada T2W 4X9 Fax: 403.259.661 1 June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 2 1 INTRODUCTION Williams Production RMT Co. (Williams) plans to install several gas engine driven gas compressors at Crawford Trail Compressor Station (CS), a new facility in Garfield County, Colorado. Two configurations were considered: • Base Case: Two compressors in an acoustical building (main) • Build -out Case: Four compressors in an acoustical building (main) and two skid - mounted compressor packages, each in an acoustical enclosure The project goal is that the total sound level be less than or equal to 65 dB(A) at a distance of 350 feet from noise sources or at the property line, whichever is greater. This is in accordance with the Colorado Oil and Gas Conservation Commission (COGCC) nighttime noise limit for a light industrial zone. HFP Acoustical Consultants Inc. (HFP) was asked to create a computer noise model of the compressor station for both planned conditions. Based on data provided and using the noise mitigation treatments listed herein, results show that the sound level contribution from the planned equipment will be less than 65 dB(A) at a distance of 350 feet from the noise sources or at the property line, as applicable for each case. 2 COMPUTER NOISE MODELING A three-dimensional computer noise model was constructed in order to predict the sound level impact of the proposed equipment. The compressor station noise model was developed using CadnaA, version 3.6.119, a noise modeling package developed by DataKustik GmbH. The software takes into account spreading losses, ground and atmospheric effects, shielding from barriers and buildings, and reflections from surfaces. The computer noise model calculations are based on "ISO 9613-2: Acoustics — Attenuation of sound during propagation outdoors." Scheduled equipment includes: • CAT G3612, 3482 hp engines • Ariel JGZ-4 compressors • Air -X -Changer model 156-2Z lube oil coolers • Gas interstage cooler: Air -X -Changer model 120-2Z • Gas after cooler: Air -X -Changer model 1 32-2Z • Air -X -Changers model 144E11 coolers (skid -mounted units) One of two scheduled generators will be running at all times. The generators are driven by CAT 3516 gas engines and are housed in a room in the MCC/Control building. Generator equipment is discussed in section 2.3. HFP ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 3 The sound pressure level (SPL) at building interiors and sound power levels (PWL) for other compression equipment used in the calculations are shown in Table 1. These values were used for the Base Case and Build -out case; the former with 2 units, the latter with 4 units inside the main compressor building and two skid -mounted. Table 1: Compressor Building interior sound pressure level (SPL) and source sound power level (PWL) values assumed for planned equipment. Main Compressor Building Equipment Noise Source 31.5 63 125 250 500 1000 2000 4000 8000 dB(A) Engine Exhaust (Unsilenced) Compressor Drive, PWL 109 125 123 121 123 128 133 139 140 143 SPL in Compressor Building - 2 Units, Li 92 103 106 97 97 96 98 97 89 104 SPL in Compressor Building - 4 Units, Li 94 105 108 99 99 98 100 99 92 106 Compressor Building Ventilation Fan, PWL 97 97 98 98 97 93 89 84 80 98 Horizontal Lube Oil Cooler Fan, PWL 109 109 108 106 100 98 92 86 80 103 Horizontal Interstage Process Gas Cooler Fan, PWL 107 107 106 103 98 96 90 84 78 101 Horizontal Process Gas After Cooler Fan, PWL 109 109 108 105 100 98 92 86 80 102 2.1 Base Case — Two Compressors inside an Acoustical Building The engines and compressors will be inside an insulated metal building. The modeled octave band sound pressure levels (SPL) inside the building due to the two engines and compressors are shown in Table 1. Also shown are the sound power levels (PWL) of other modeled noise sources. The sound transmission loss (TL) values of the building walls, roof, doors and translucent panel are shown in Table 2. Also shown are the required minimum dynamic insertion loss (DIL) values for the engine exhaust silencer. The compressor building exterior is assumed to be constructed of 24 gage sheet metal. Higher TL values are required at the west wall of the compressor building because the compressor and engines are nearest the west wall inside the building and because the lube oil coolers are located on the west side. HFP ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 4 Table 2: Required noise control treatments to meet 65 dB(A) at 350 feet from noise sources or at the property line, as applicable for Base Case. Noise Source Treatment Required Dynamic Insertion Loss (DIL) or Transmission Loss (TL) by Octave Band (Hz) 31.5 63 125 250 500 11000 2000 4000 8000 Engine Exhaust Stack Outlets Engine Exhaust Silencer, DIL (GT Exhaust 7100 Series) 15 31 40 48 52 52 50 48 46 Compressor Building Walls and Roof Required Minimum TL 12 12 11 16 26 34 41 44 46 Compressor Building Ventilation Inlets Standard Louver, TL 0 0 0 2 5 1 6 9 10 Compressor Building Ridge Cap Ridge Cap DIL 2 6 9 10 10 11 13 13 12 Compressor Building Translucent Panel 1/4" Lexan, TL 0 17 21 22 26 32 37 41 41 Equipment Door STC -21 Roll -up Door, TL 2 7 12 17 18 19 22 30 35 Personnel Door TLC -32 Door, 20 17 23 27 32 32 31 41 41 Building ventilation was considered in the model, including wall inlet fans and roof ridge gravity relief vent. Standard louvers were modeled for the building air inlets. The gravity roof exhaust will require sound attenuation performance better than a typical ridge vent supplies, as noted herein. No special acoustical treatments are required on the lube oil or process gas coolers, which have cooling fans with relatively low sound power levels. Aboveground piping associated with metering, scrubbers, pig launchers, receivers, etc. will be minimized to the extent practical. Noise from these piping sources was not included in the noise analysis. It is possible that some aboveground piping will need to be acoustically lagged, but lagging can be installed after operations begin if necessary. The attached Figure 1 shows the results of the computer noise model for the Base Case with sound power levels and treatments referenced above. The sound level contribution due to all equipment for this case is shown to be less than 65 dB(A) at a distance of 350 feet from the noise sources in the east and south, and west directions, as well as at the north property line. HF P ACOUSTICA L CONSULTA NTS June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 5 2.2 Build -out Case — Four Compressors inside an Acoustical Building and Two Skid -mounted Compressors The planned build -out condition at the Crawford Trail Compressor Station is four units inside the main compressor building and two skid -mounted compressors located just south of the main building. The same source sound levels listed in Table 1 with the interior sound level listed for four units were used in the calculation for the main building. The corresponding noise control treatments listed in Table 2 were also used. The same engine and compressors will be used for the skid -mounted equipment. However, each skid will have its own cooler. The sound power level of the cooler fan used in the model is given in Table 3. Table 3: Sound Power Level of skid -mounted vertical cooler fans. Skid -mounted Compressors Equipment Noise Source 31.5 63 125 250 500 1000 2000 4000 8000 dB(A) Vertical Cooler Fan, PWL 119 119 118 115 110 108 102 96 90 113 The two skid -mounted compressor packages outside the main compressor building will require significant noise reduction. To meet the noise goal, it will be necessary for these two units to be mounted inside a temporary or permanent building or machinery enclosure. The coolers will also require silencers on the intake and discharge. The noise control treatments listed in Table 4 are necessary for the skid -mounted compressor packages. The attached Figure 2 shows the results of the computer noise model for the Build -out Case. The sound level contribution due to all equipment (six compressors total) for this case is shown to be less than 65 dB(A) at a distance of 350 feet from the noise sources in the east and south, and west directions, as well as at the north property line. HFP ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 6 Table 4: Required noise control treatments for SKID -MOUNTED compressor packages to meet 65 dB(A) at 350 feet from noise source or at the property line in combination with the four units in the main compressor building. Noise Source Treatment Required Dynamic Insertion Loss (DIL) or Transmission Loss (TL) by Octave Band (Hz) 31.5 63 125 250 500 1000 2000 4000 8000 CAT 3612 Engine Exhaust Engine Exhaust Silencer, DIL (GT Exhaust 7100 Series) 15 31 40 48 52 52 50 48 46 Enclosure Walls andTL Roof Required Minimum 12 18 21 27 37 48 54 54 54 Enclosure Ventilation Inlets Ventilation Hood Silencer, DIL 0 6 10 23 28 28 25 20 15 Enclosure Ridge Cap Ridge Cap DIL 2 6 9 10 10 11 13 13 12 Cooler Air Inlet Intake Silencer 0 10 15 28 40 40 30 28 25 Cooler Air Discharge Exhaust Silencer 0 8 10 20 25 25 25 19 13 2.3 Generator Building One of two scheduled generators will be running at all times. The generators are driven by CAT 3516 gas engines and are housed in a room in the MCC/Control building. This was modeled as a sound source. The sound power levels (PWL) and the sound pressure level (SPL) at building interiors used in the calculations are shown in Table 1. The sound transmission loss (TL) values of the building walls, roof, and doors are shown in Table 2. Also shown are the required minimum dynamic insertion loss (DIL) values for the engine exhaust silencer and generator building ventilation. Table 5: Generator Building interior sound pressure level (SPL) and source sound power level (PWL) values assumed for planned equipment (applies for all three cases). Equipment Noise Source 31.5 63 125 250 500 1000 2000 4000 8000 dB(A) Engine Exhaust (Unsilenced) Generator Drive, PWL 119 119 120 126 124 122 122 122 122 130 SPL in Generator Room Walls and Roof, Li 87 103 105 98 97 96 93 90 86 101 HF P ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS HFP File 6259-1 Page 7 Table 6: Required generator building noise control treatments to meet 65 dB(A) at 350 feet from noise sources or at the property line (applies for both cases). Noise Source Treatment Required Dynamic Insertion Loss (DIL) or Transmission Loss (TL) by Octave Band (Hz) 31.5 63 125 250 500 1000 2000 4000 8000 Engine Exhaust Stack Outlets Engine Exhaust Silencer, DIL (GT -5100) 10 21 32 38 35 30 25 22 24 Generator Building Walls and Roof 24 Gauge Sheet Metal 10 8 14 16 17 23 23 27 29 Generator Building Ventilation Inlets Standard Louver, TL 0 0 0 2 5 1 6 9 10 Generator Building Ventilation Roof Exhausts Ridge Cap DIL 2 6 9 10 10 11 13 13 12 Equipment Door STC -21 Roll -up Door, TL 2 7 12 17 18 19 22 30 35 Personnel Door TLC -32 Door, 20 17 23 27 32 32 31 41 41 Generator sources and treatments were used in both the Base Case and Build -out Case. 3 SUMMARY AND CONCLUSIONS A computer noise model of the Williams Crawford Trail Compressor Station was created to determine the noise contribution of the planned compression equipment in the Base and Build -out Cases. Based on data provided and using the noise mitigation treatments listed herein, sound level contributions from the planned equipment will be less than 65 dB(A) at a distance of 350 feet from the noise sources or at the property line, as applicable. HF P ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS I -IFP File 6259-1 Page 8 350 ft. • 57.4 G Lube 00 Coolers Compressor Building Process Gas Coolers O 62.9 €58.9 100 feet Property Line 350 ft. 60.6 Control Building & Generator Room Figure 1: 3-D Computer Noise Model Results, dB(A) Williams Crawford Trail Compressor Station: Base Case HFP ACOUSTICAL CONSULTANTS June 22, 2007 Williams — Crawford Trail CS 350 ft. 64.6 59.6 0 0 G O Lube Oil Coolers Compressor Building Process Gas Coolers G 8 Skid -mounted Compressors HFP File 6259-1 Page 9 100 feet Property Line 350 H. 62.5 64.2 ei 60.4 Control Building & Generator Room Figure 2: 3-D Computer Noise Model Results, dB(A) Williams Crawford Trail Compressor Station: Build -out Case H- F P ACOUSTICAL CONSULTANTS PVCMI Land Planning Division 1038 County Road 323 Rifle, CO 81650 Ph. 970-625-5350 Fax 970-625-4522 Email: pvcm@hughes.net Project: Crawford Trail Gathering Pipeline Submittal Item Tab 24. Contact person for Williams Production RMT Co. for Garfield County to contact for Garfield County inspection. 9.07.11 Bargath, Inc.- Authorized Representative and Project Manager Mr. Tom Fiore P.O. Box 370 Parachute, CO 81635 Phone: 970-263-2743 Cell Phone: 970-210-1641 Email: tom.tiore@williams.com Please contact me with any questions. Sincerely, a Philip B. Vaughan President PVCMI Page 1 of 1