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HomeMy WebLinkAbout1.0 Application_Part2"NIL OXY USA WTP LP OXY 760 Horizon Drive, Suite 101 Grand Junction, CO 81506 Cascade Creek Operation Area Updated: August 8, 2012 Garfield County, Colorado 0 0.250.5 1 1.5 2 2.5 3 3.5 Miles • Eemng Wer Ped ▪ Ptanaoa war Pad p Exiling Porn Fixates irD OXY Goad] Shad. ay Rospona Lie R4sd \, t UnYipmwd Put& Road �E3Ga+e' Pubic Road Payed Pubk. Road 1r Gar dad GWdi Rodd tmWd access} w.akgrse Cascade Creek Field Primary Muster Point cer.uodd Cascade Creek Field Secondary Muster Point LZ 609 L L1 14 Annex Note: See Appendix C: Z2 - Top of the Mountain Road , Designated Landing Zones for coordinates. Z3 Pond 10 NIS LZ = landing zone Jt. 7C.. �.�... _ ., __ '•11.a• Y 45: Yd T-1>rY t is `Y OXY USA Ines OXY 760 Horizon Drive, Suite 101 Grand Junction, CO 81506 Collbran Operations Map Updated July 14, 2011 Mesa County, Colorado 0 0.9 1.8 2.7 3.6 4.5. IM Milos Hell's Gulch Landing Zone and Muster Point akdIaeek Stake Brush Creek Landing Zone Muster Point (Field Office) East Plateau Landing Zone East Plateau Muster Point (Field Office) Note: See Appendix C: Designated Landing Zones for coordinates Oxy owned Pad Oxy Facilities \, Existing Gas Pipeline DI 0 CC lL tLc LL O 0 0 i_ '&)888 x0vc =888-a'Li cc* I LL. REACTIVITY TV5 `C 0 >s ›N a) 548 to° .0 I 7* g g h 0 li>..gyct4._ 84(izcip • CC E z E M I". 2VV28 ES ro6 Imi CILUIT)Z a 4 :t.J. , 2 z as ILI .tt co CV Aul' 0 ci.la ligN 05"( 43 472 08 D(13 rt; I CO 1 Revised: 1 Aug 12 Oxy Piceance Area ERP Page 47 OXY USA WTP LP Pond 10 Water Supply and Management Plan Section 4-203 M. Water Supply and Management Plan The Water Management Plan, Section 4-203(M) of the Garfield County Land Use and Development Code is not applicable to the proposed site. The proposed facility will not require water for personnel or water to be supplied to the site for daily operations. During operations, personnel will not be required to be manned at the site other than during completions activities. Drinking water will be provided in the form of bottled water. Due to the minimal presence of personnel onsite, water use will not be required onsite. The Pond 10 site stored produced water extracted during drilling activities. The Non -Tributary Groundwater Analysis is provided in the Impact Analysis tab. Water Supply and Management Plan Garfield County Limited Impact Review, 2014 Page 1 of 1 OXY USA WTP LP Pond 10 Wastewater Management and System Plan Section 4-203 N. Wastewater Management and System Plan The Wastewater Management and System Plan, Section 4-203(N) of the Garfield County Land Use and Development Code is not applicable to the proposed site. The subject use is not served by an existing public collection system or treatment facility nor is an on-site wastewater treatment systems proposed. During operations, personnel will not be required to be manned at the site other than during completions activities. Due to the minimal presence of personnel onsite, a wastewater use will not be required onsite. A portable toilet is located 120 feet to the west from the site perimeter. Wastewater Management and System Plan Garfield County Limited Impact Review, 2014 Page 1 of 1 OXY USA WTP LP Pond 10 Grading and Drainage Plan Table of Contents 1. Grading and Drainage Plan Narrative 2. Pond 10 Drainage and Grading Report 3. Appendix A Part 1 4. Appendix A Part 2 5. Grading Plan Figure 6. Pre -Disturbed and Native Grading Plan Figure 7. Surface Water Map 8. Monitoring Wells Figure 9. Floodplain Figure 10. Stormwater Management 11. Stormwater Extension Letter 12. Plan Stormwater Permit Grading and Drainage Plan - Table of Contents Garfield County Limited Impact Review, 2014 Page 1 of 1 OXY USA WTP LP Pond 10 Grading and Drainage Plan Section 4-203 (E) 1.0 Introduction The following section addresses the requirements for the Grading and Drainage Plan under Section 4-203 of the Garfield County Land Use and Development Code (LUDC). 2.0 Site Map. A site map showing locations of any existing structures, Waterbodies or hydrologic features on the site, including intermittent water features, Wetlands, and the 100 year Floodplain boundaries. The site map is located in the Maps and Plans Tab. Surface Water Figure is located in the Grading and Drainage Plan tab. 2.1 Drainage Structures. a. Locations of existing and proposed drainage structures or natural drainage features affecting site drainage on the parcel and within 10 feet adjacent to the site boundary, including street gutters, storm sewers, drainage channels, and other water conveyance structures; and Wetlands or other Waterbodies receiving storm runoff from the site. b. Preliminary engineering design and construction features for drainage structures to be constructed. Proposed and existing drainage plans and structures are detailed in the Drainage and Grading Report. Site plan is located in the Maps and Plans tab. 2.2 Topography. Existing topography at reasonable contour intervals to provide necessary detail of the site. The map should extend a minimum of 10 feet beyond the property line and show the location of the property line. Topographic figures are detailed in Appendix A, located in the Grading and Drainage Plan tab The site plan is located in the Maps and Plans Tab. 2.3 Grading Plan. A grading plan showing the proposed topography at reasonable contour intervals that provides necessary detail of the site. The plan shall show elevations, dimensions, location, extent and Slope of all proposed clearing, and Grading including building site and driveway grades. Grading figures for the proposed site are located in the Grading and Drainage Plan Tab. 2.4 Soil Stockpile and Snow Storage Areas. Probable locations of soil stockpiles and snow storage areas. Snow within the site perimeter will be stockpiled only as needed to allow operations. Plowed snow will be placed near the outer boundary of the pad allowing pad swales to collect the snow melt and route it to the retention pond. Details on snow storage are located in the Drainage and Grading Report and the snow storage area is depicted in the Site Plan located in the Maps and Plans tab. 2.5 Drainage Plan. Proposed drainage plan. OXY will utilize engineering and operational BMPs to limit runoff. Details for existing and proposed drainage plans and structures are located in the Drainage and Grading Report. Grading and Drainage Plan Narrative Garfield County Limited Impact Review, 2014 Page 1 of 4 OXY USA WTP LP Pond 10 2.6 Equipment Storage Areas. Location of storage areas designated for equipment, fuel, lubricants, chemical, and waste storage with an explanation ofspill containment structures. No liquids or semi-solid materials will be transported or stored on the three proposed storage areas. Treated produced water will be stored in the water impoundment. Oxy will install two leak detection site pipes between the primary 60 -mil HDPE and secondary 60 -mil HDPE liners to detect fluid accumulation between the liners. The SPCC is located in the Maps and Plans tab. Liners details are found in the COGCC Form 15 application, located in the Supporting Documents tab. 2.7 Temporary Roads. Location of temporary roads designed for use during the construction period. A temporary road will not be required for the construction duration. The access road was previously constructed for the former water impoundment site. Some access roads will be re- graded for the construction of the new water impoundment site. The Disturb and Native Grading Figure depicts the existing and new grading areas. The Total Grading Map displays the areas to be graded for the construction of the proposed site. Existing and proposed access roads will adhere to the Garfield County Roadway Standards, Section 7-107 in the Garfield County LUDC. Roadway standards are detailed in the Standards tab. 2.8 Areas of Steep Slope. Areas with Slope of 20% or greater shall be identified by location and percentage of SIope, both for the existing site conditions and within the developed area. Areas with slope of 20% or greater are identified in the Appendix A documents, located in the Grading and Drainage Plan tab, The subject area was previously disturbed and slopes indicated represent existing site conditions and the developed site. The eastern perimeter of the site contains a berm used for drainage control and a deterrent for rock fall and debris. Slopes with 20% or more are necessary for stormwater control and the proposed drainage plan. Slopes are detailed in the Drainage and Grading Report and identified in figures found in Appendix A. 2.9. Construction Schedule. Construction schedule indicating the anticipated starting and completion time periods of the site grading and/or construction sequence, including the installation and removal of erosion and sediment control measures, and the estimated duration of exposure of each area prior to the completion of temporary erosion and sediment control measures. While the site was previously developed, areas will need to be re -graded and developed for the proposed water impoundment. Construction for the proposed site will take approximately 10-12 weeks. A construction schedule table is located in the Drainage and Grading Plan. 2.10 Permanent Stabilization A brief description of how the site will be stabilized after construction is completed. The proposed site will be 9.835 acres. Approximately 95% of the site location was previously graded with some areas planned to be re -graded. Areas of disturbance around the site and access road will be revegetated (in accordance with the OXY Weed Management Plan and Reclamation Plan located in the Impact Analysis tab) for final stabilization. Site development details are located in the Drainage and Grading report. Grading and Drainage Plan Narrative Garfield County Limited Impact Review, 2014 Page 2 of 4 OXY USA WTP LP Pond 10 2.11 Erosion Control Measures. Plan view drawings of all erosion and sediment control measures showing approximate locations and site drainage patterns for construction phases and final design elements. Text may be necessary to accompany and explain the drawings. Typical erosion control measures should be depicted using standard map symbols. Erosion control measures are detailed in the Drainage and Grading Report, located in the Grading and Drainage Plan tab. 2.12 Estimated Cost. Estimated total Cost, including installation and maintenance. The cost of the proposed site, including grading installation, all equipment and the removal of previous ponds is estimated at $700,000. The annual maintenance cost for stormwater is estimated at $4000 and all inspections, additional maintenance, and operating costs is estimated at $10,000. 2.13 Calculations. Any calculations made for determining rainfall, runoff sizing any sediment basins, diversions, conveyance, or detention/retention facilities. Calculations are detailed in the Drainage and Grading Report. Calculation tables for the proposed site are located in Appendix B of the Drainage and Grading Plan. Site features are indicated in the grading figures and Appendix A, located in the Grading and Drainage Plan tab. 2.14 Neighboring Areas. A description of neighboring areas with regard to land use and existing pertinent features such as lakes, streams, structures, roads, etc. The subject and adjacent parcels are zoned resource lands and public lands. According to the Garfield County Assessor's Office, surrounding land uses are listed as energy development, public lands, and agricultural. 2.15 Stormwater Management. A description of the stormwater management planning concept for the site, including both structural and nonstructural best management practices. Stormwater management plans specific to the proposed site are detailed in the Drainage and Grading Report. OXY's SWMP and BMP's will be implemented for the proposed site. A copy of the Oxy's Stormwater plan, permit, and extension letter are located in the Grading and Drainage Plan tab. 2.16 Stormwater Management Plan. Copy of the stormwater management plan application to CDPHE with date of submittal. OXY's SWMP and BMP's will be implemented for the proposed site. A copy of the Oxy's Stormwater plan, permit, and extension letter are Located in the Grading and Drainage Plan tab. Stormwater management plans specific to the proposed site are detailed in the Drainage and Grading Report. 2.17 Reclamation Plan. A reclamation plan consistent with the standards in section 7-207. Oxy's Reclamation plan adheres to the standards in Section 7-207 of the Garfield County Land Use and Development Code. Proposed reclamation will be similar to or better than existing site conditions. Disturbed cut and fill slopes from the pad will be hydromulched and seeded with a seed mix consisting of a diversity of native or desirable nonnative species capable of supporting the post -disturbance land use. Vegetation will be established and growing within 2 growing seasons Grading and Drainage Plan Narrative Garfield County Limited Impact Review, 2014 Page 3 of 4 OXY USA WTP LP Pond 10 based on 70% coverage as compared to surrounding native vegetation coverage. The reclamation plan is located in the Impact Analysis tab. 2.18 Hydraulic Calculations, Hydrologic, hydraulic, and all other calculations used to size and design drainage facilities and/or structural BMPs. Hydrologic calculations were based on the proposed site size of approximately 9.835 acres. Calculations are detailed in the Drainage and Grading Report. Calculation tables for the proposed site are located in Appendix B of the Drainage and Grading Plan. 2.18 Maintenance Requirements. Maintenance requirements for all proposed BMPs should be discussed including access, schedules, costs, and designation of a responsible party. Stormwater management plans specific to the proposed site are detailed in the Drainage and Grading Report. A copy of the Oxy's Stormwater plan, permit, and extension letter are located in the Grading and Drainage Plan tab. 2.19 Spill Prevention Control and Countermeasures Plan, if Applicable. A SPCC Plan will be required for any facility with the potential to discharge oil of any kind or in any form including, but not limited to, petroleum, fuel oil, sludge, oil refuse and oil mixed with wastes, in quantities that may be harmful to navigable water and adjoining shoreline, per EPA regulations. Spill prevention details are provided in the SPCC plan, located in the Maps and Plans tab. Spills are discussed in the Drainage and Grading Report and in COGCC Form 15 application, located in the Supporting Documents tab. Grading and Drainage Plan Narrative Garfield County Limited Impact Review, 2014 Page 4 of 4 Drainage Report Pond 10 Upgrade Garfield County, Colorado Prepared for: OXY USA Inc. 760 Horizon Drive, Suite 101 Grand Junction, CO 81506 Office Phone: 970-263-3634 Prepared by: D.R. Griffin & Associates, Inc. 1414 Elk Street, Suite 202 Rock Springs, WY 82901 Office Phone: 307-362-5028 March 31, 2014 D.R. Griffin & Associates, Inc. Job #: 20347 TABLE OF CONTENTS 1) INTRODUCTION a) Background b) Project Location c) Property Description d) Previous Investigations 2) DRAINAGE SYSTEM DESCRIPTION a) Existing Drainage Conditions b) Offsite Drainage c) Proposed Drainage System Description d) Drainage Facility Maintenance 3) DRAINAGE ANALYSIS AND DESIGN CRITERIA a) Regulations b) Development Criteria c) Hydrologic Criteria d) Hydraulic Criteria 4) CONSTRUCTION a) Schedule b) Excess Soil 5) POST CONSTRUCTION a) Stormwater Quality Control Measures b) Calculations c) Reclamation 6) CONCLUSIONS a) Compliance b) Design Effectiveness c) Areas in Flood Hazard Zone 7) REFERENCES APPENDIX A: MAPS AND EXHIBITS APPENDIX B: HYDROLOGIC CALCULATIONS APPENDIX C: HYDRAULIC CALCULATIONS ENGINEER'S STATEMENT SIGNATURE BLOCKS LARRY G. BODYFELT STATES THAT I AM BY OCCUPATION A PROFESSIONAL ENGINEER (CIVIL) AND LAND SURVEYOR EMPLOYED BY OXY USA INC. TO PREPARE A DRAINAGE REPORT FOR THE POND 10 UPGRADE PROJECT IN ACCORDANCE WITH THE GARFIELD COUNTY LAND USE AND DEVELOPMENT CODE AND THE COLORADO OIL AND GAS COMMISSION (COGCC), AND THAT THE WORK WAS DONE UNDER MY AUTHORITY AND SUPERVISION COMMENCING JANUARY 6, 2014, I ALSO STATE THAT THE DESIGN IS COMPLIANT WITH THE NORMAL AND CUSTORMARY INDUSTRY STANDARD OF PRACTICE FOR THIS TYPE AND NATURE OF WORK. LARRY G. BODYFELT, WYOMING PROFESSIONAL ENGINEER {CIVIL) AND LAND SURVEYOR NO. 3507 OWNER'S STATEMENT REVIEWED AND APPROVED BY: MICHAE ENGINEER OFESSIONA OXY USA INC. HAS REVIEWED THE DRAINAGE REPORT FOR THE POND 10 UPGRADE PROJECT AND ACCEPTS THE RESPONSIBILITY FOR IMPLEMENTING AND MAINTAINING REQUIRED DRAINAGE MITIGATION PROCEDURES DURING AND AFTER CONSTRUCTION. GARY GROVE, OXY USA INC. 1) INTRODUCTION a) Background See Sheet A-11 in Appendix A for exhibit defining Pad Area Boundary and Project Area Boundary. The existing Pond 10 facility and associated storage areas (Project Area) is being upgraded to convert two smaller storage ponds into one larger pond. The pond will store produced and flowback water from Oxy USA, Inc. (Oxy) owned or operated natural gas wells in the Cascade Creek field. The pond may also be used to store produced water from other Piceance operators to support well stimulation by hydraulic fracturing. Water will be introduced to the pond from either pipeline or water trucks. The Project Area is also being designed to mitigate drainage deficiencies and bring the Pond 10 Pad Area into compliance with Garfield County Code 4-203.D., 4-203.E., 7-204 and the COGCC regulation that states, "Surface water diversion structures, including, but not limited to berms and ditches, shall be constructed to accommodate a one hundred (100) year, twenty-four (24) hour event. The facility shall be designed and constructed with a run-on control system to prevent flow onto the facility during peak discharge and a run-off control system to contain the water volume from a twenty-five (25) year, twenty-four (24) hour storm" This report analyzes up slope flow to be routed around the Pad Area, change in water quantity resulting from the proposed construction, and mitigation measures required to control Pad Area run-on and Pad Area run-off during expected flows for design storm events. b) Project Location The Project Area is located in Tract 83-B and Tract 39, in the SE 14 of the SW % and the SW % of the SE % of Section 5, Township 7 South, Range 97 West, 6th Principal Meridian, Garfield County, Colorado. Driving directions to the Project Area are described as follows: From De Beque, Colorado, head northwesterly on 45 Rd for 3.2 miles. Continue northerly onto County Road 204 into Garfield County for 4.0 miles. Turn right onto County Road 213/Conn Creek Road and continue easterly then northeasterly 3.9 miles. The Project Area is located about 300' east of County Road 213 at this location. See Sheet A-1 in Appendix A for surrounding area vicinity map. Center of Pond 10 coordinates are approximated in NAD 83 Datum as: Latitude: 39.468404' N Longitude: 108.244602° W c) Property Description Project Area is bounded on the west by toe of existing 2:1 (H:V) pad slope, bounded on the north by an existing and proposed swale S2, bounded on the east by an existing and proposed swale S1 and bounded on the south by existing and proposed swales SR1 and S1. Pad Area is bounded on the west by top of existing pad with a 2:1 slope, bounded on the north by proposed swale S3, bounded on the east by top of an existing and proposed berm expansion and bounded on the south by top of a proposed pad expansion in existing storage area 3 with a 2:1 slope. Existing ground conditions in undisturbed regions of the Project Area are lightly vegetated with grasses, weeds and sage. Travel surfaces on the pad and storage areas 1, 2 and 3 are mostly bare dirt with a small amount of gravel intermixed. Disturbed steep side slopes within the Project Area are mostly bare soil with sparse grasses and weeds. The Project Area is zoned as Resource Lands as indicated by the Garfield County Zone District Map. d) Previous Investigations To our understanding, no previous investigations of the Project Area drainage have been conducted or approved regarding this location. 2) DRAINAGE SYSTEM DESCRIPTION a) Existing Drainage Conditions Existing conditions consist of a relatively level pad area with projecting 2:1 slopes extending from the north and east pad edges up to daylight with historic contours and 2:1 slopes extending south and west from the pad edge down to meet with the access road and parking lot chain up area. Project Area soil conditions are mainly open ground with the entire Project Area having hydrologic soil group B designation which has "moderately low runoff potential when thoroughly wet" as defined by the Natural Resources Conservation Service (NRCS). See the hydrologic soil group maps produced by the NRCS in Appendix B. Pad Area has an effective runoff area of approximately 3.33 acres excluding the existing Pond 10 area. Storm water that falls on the Pad Area is either trapped in puddles on the pad area or drains off the west and south edge of the pad to Conn Creek by way of sheet flow, ditches, culverts, concrete vaults and existing swales. Project Area north of the Pad Area has limited runoff control or treatment. Water is prevented from flowing onto this area by protection from existing swale S2, but water falling on this area flows southwesterly across existing storage areas 1 and 2 and into the borrow ditch east of Oxy's private access road. The Project Area east of the Pad Area drains to an existing set of swales in the proposed swale S1 vicinity. Runoff is treated in a sediment trap prior to being discharged through a culvert in the vicinity of proposed cattle guard C3. In the Project Area south of the Pad Area, storm water currently runs down the steep slope from the pad fill and crosses the access road before being collected in the existing swale near proposed swale SR1 and routing to Conn Creek. The Project Area west of Pad Area drains down the steep 2:1 fill slope from the pad and sheet flows across the parking lot chain up area before being collected in the borrow ditch east of Oxy's private access road. b) Offsite Drainage The area that historically drained across the Pad Area is a steep sloping hillside that has an area of approximately 83.46 acres and is designated in this report as basin W1. Potential for development on this terrain is minimal to non-existent; accordingly, future development for areas upstream of the Pad Area was not taken into consideration for this report. C} Proposed Drainage System Description To meet COGCC regulations regarding Pad Area run-on and run-off, new proposed and upgraded existing swales were designed to direct flow around the Pad Area to prevent run-on. To capture, convey and store stormwater on the Pad Area to prevent run-off, the proposed pad was designed to gently slope from northwest to southeast as well as away from Pond 10. Storm water landing on the Pad Area was designed to be collected in swales SP1 and SP2 around the exterior of the pad and transported at a -1% slope to the proposed retention pond in the southeast corner of the Pad Area. Swales were sized to transport runoff from a 100 year, 24 hour storm event and the retention pond was sized to retain water from a 25 year, 24 hour storm event. See Appendix A for layout of delineated watersheds and proposed drainage plan. W1 is the 83.46 acre basin east of the Pad Area. Storm runoff from this basin will be collected in swale 51 and discharged into a sediment trap at design point (1). From the sediment trap, flow will pass under an access road through a cattle guard with concrete vault at C3 and discharge to open sage lands. W2 is the 3.74 acre basin north and northeast of storage area 1. Storm runoff from this basin will be collected in swale S2 and discharged to the borrow ditch on the east side of Oxy's private access road at design point (2). Flow will travel south and east through existing culverts to cross an approach and Oxy's private access road before finally discharging into Conn Creek. W3 is the 1.07 acre basin just north of the Pad Area. Storm runoff from this basin will be collected in swale S3, travel across pad access under a cattle guard at C1 and discharge to a sediment trap at design point (3). Sediment trap overflow will sheet flow across the parking lot and chain up area to the borrow ditch on the east side of Oxy's private access road and cross Oxy's private access road through a culvert discharging to Conn Creek. P1 is the 3.21 acre basin known as the Pad Area. Storm runoff from the hill and pad north and east of Pond 10 will be collected in swale SP1 and transported to the retention pond at design point (10). Storm runoff from the pad south and west of Pond 10 will be collected in swale SP2 and transported under a cattle guard at C2 to the retention pond at design point (11). The retention pond and portion of land that flows directly into the retention pond is included in P1 while Pond 10 is excluded from basin P1 for the purpose of this report. Snow falling on the Pad Area will be stockpiled only as needed to allow normal and necessary operations. Stockpiled snow will be directed toward BMPs when practical to allow treatment. Plowed snow will likely be placed near the outer boundary of the pad so pad swales will collect the snow melt and route it to the retention pond. PS1 is the 2.19 acre basin containing storage areas 1 and 2. All storm runoff from PS1 is collected by three swales S7, S8 and S9 and directed into a sediment trap at design point (5). More particularly, storm runoff from about the northwest half of storage area 1 is collected by swale 57 and discharged into the sediment trap at design point (7). Storm runoff from about the southeast half of storage area 1 is collected by swale S8 and discharged into the sediment trap at design point (8). Storm runoff from storage area 2 is collected by swale S9 and discharged into the sediment trap at design point (9). Sediment trap overflow will sheet flow to the borrow ditch on the east side of Oxy's private access road and pass through existing culverts to cross an approach and Oxy's private access road discharging into Conn Creek. The Pad Area retention pond at design point (4) was designed to retain all storm runoff from P1 during a 25 year 24 hour event. The pond has a volume at pool elevation 5843 of 0.59 acre-feet. The retention pond was located entirely in cut and has a depth of 8.0' at the designated pool elevation. Sediment trap 1 at design point (5) was intended to trap sediment and improve discharged water quality from P51. The trap has a volume of 0.038 acre-feet at pool elevation 5843.5'. This trap is entirely in cut and has a depth of 4.0' at the designated pool elevation. Sediment trap 2 at design point (3) was designed to trap sediment and improve discharged water quality from W3. The trap has a volume of 0.043 acre-feet at pool elevation 5832'. This trap is partially in cut and partially in fill and has a depth of 3.0'. Sediment trap 3 at design point (1) was planned to trap sediment and improve discharged water quality from W1. The trap has a volume of 0.056 acre-feet at pool elevation 5850'. This trap is partially in cut and partially in fill and has a depth of 5.0'. See proposed drainage ditches and concrete cattle guard vaults on sheets 3 Appendix A. d) Drainage Facility Maintenance Owner will be required to perform regular maintenance of swales, sediment traps, cattle guards, concrete vaults, rip rap and retention pond. Swales, cattle guards and concrete vaults should be graded or cleaned out every one to three years or as needed after all significant storm events. Sediment traps and retention pond should be dredged and re -graded as needed to maintain depth, dimensions and side slopes. Proper Best Management Practices (BMPs) shall be utilized by contractor during construction to prevent Project Area run-off of soil laden waters. Contractor shall utilize BMPs as needed to maintain water quality during construction using methods described in the Urban Storm Drainage Criteria Manual Volume 3. Silt fence, sediment control logs, straw bale barriers, rock socks or other mitigation measures shall be employed. Additional measures shall be added if determined necessary in the field by a qualified person. A majority of BMP elements are already in place and are maintained on a regular basis. Additional BMPs will expand and increase the effectiveness of the existing BMP system. An estimated cost for BMP installation and maintenance during the construction phase is $10,000. An estimated cost to maintain and keep the BMPs in effective working order is $4,000 annually. 3) DRAINAGE ANALYSIS AND DESIGN CRITERIA a) Regulations Production of this drainage report follows normal and customary engineering practices for this type and nature of work. The Stormwater Management Manual for Grand Junction and Mesa County and Garfield County Land Use and Development Codes 4- 203.D., 4-203.E., and 7-204 were used as a design and formatting guideline. b) Development Criteria No known drainage constraints have been previously placed on the Project Area due to drainage studies, floodplain studies or a master drainage plan. Location of retention pond in the southeast corner of the Pad Area was restrained to some degree by the land boundary to the south. A parking lot and chain up area is adjacent westerly of the Project Area limiting the dimensions of sediment trap 2. There are no developments adjacent to the north or east edges of the Project Area limiting drainage system components. Drainage systems were designed to eliminate flow onto the Pad Area during a 100 year, 24 hour event and retain the precipitation on the Pad Area during a 25 year, 24 hour event. C) Hydrologic Criteria Hydrologic calculations performed during design of the Project Area drainage systems were according to normal and customary engineering practices. The rational method was utilized in development of hydrologic design storms. See Appendix B for all hydrologic calculations. d) Hydraulic Criteria Hydraulic calculations performed during design of the Project Area drainage systems were according to normal and customary engineering practices. Hydraulic flow through each swale was estimated using Manning's Equation. See Appendix C for all hydraulic calculations. 4) CONSTRUCTION a) Schedule See Table 2 for the anticipated construction sequence, schedule and duration for each item of the Project Area. Approximate Pond 10 Construction Schedule Construction Item Date Duration Pond 10 Excavation Begin 5/1/14 14 days Pond 10 Excavation Completion 5/15/14 Pad Grading Begin 5/16/14 14 days Pad Grading Completion 5/31/14 Earthwork and BMP Installation Off Pad Begin 6/1/14 30 days Earthwork and BMP Installation Off Pad Completion 6/30/14 Complete Clean Up and Seed Required Areas 7/15/14 2 Growing Seasons Revegetation to 70% Cover of Surrounding Native 7/15/16 Table 2 b) Excess Soil The excess soil will be spread out to blend with existing contours and slopes will be kept to a minimum to promote vegetative regrowth and limit erosion. 5) POST CONSTRUCTION a) Stormwater Quality Control Measures After construction, stormwater falling on the Pad Area during a 25 year, 24 hour event will be retained in the retention pond. In extreme storm events, sediment will be trapped in the retention pond before water escapes over the emergency overflow. Offsite stormwater from a 100 year, 24 hour event will be routed around the Pad Area in proposed and upgraded swales to eliminate flow onto the Pad Area. Stormwater flowing around the Pad Area will be directed through sediment traps to prevent sediment laden waters from continuing downstream. Stormwater falling in Pond 10 will be retained within the Pond 10 containment. Safety containment systems for Pond 10 include a geosynthetic clay liner, a double 60 -mil HDPE liner system with sandwiched geonet and two site wells to check for seepage through the primary liner. The pump pad adjacent to the south edge of Pond 10 will consist of a concrete pad with an exterior lip to ensure containment in case of spills. Proposed construction will result in very little change to impervious regions on the Project Area. b) Calculations See Appendix B for hydrologic calculations regarding stormwater management. C) Reclamation Areas disturbed by construction activity not intended for long-term functioning of the Project Area will be reclaimed. Proposed reclamation will be similar to or better than existing Project Area conditions. Disturbed cut and fill slopes from the pad will be hydromulched and seeded with a seed mix consisting of a diversity of native or desirable nonnative species capable of supporting the post -disturbance land use. Vegetation will be established and growing within 2 growing seasons based on 70% coverage as compared to surrounding native vegetation coverage. 6) CONCLUSIONS a) Compliance This report has been prepared in accordance with normal and customary engineering practices for this type and nature of work. The Stormwater Management Manual was used as a baseline for design calculations and applicable items listed in Garfield County Codes 4-203.D., 4-203.E. and 7-204 were addressed. b) Design Effectiveness With proper application of the proposed drainage mitigation design presented in this report, runoff effects onto areas downstream of the Project Area will be alleviated. c) Areas in Flood Hazard Zones There are no flood hazard zones designated by FEMA for the Project Area. The Project Area is classified as Zone D. 7) REFERENCES 1.) Stormwater Management Manual Grand Junction Municipal Code Title 26, December 4, 2013 2.) Urban Storm Drainage Criteria Manual Volume 3, Stormwater Best management Practices, November 2010 3.) Hydrology National Engineering Handbook Hydrologic Soil Groups United States Department of Agriculture Natural Resources Conservation Service Part 630 Chapter 7, May 2007 4.) Zone District Map, Garfield County, CO, December 16, 2013 5.) FEMA Flood Insurance Rate Map, Garfield County Colorado, Map Number 080205IND0A, August 2, 2006 APPENDIX A: MAPS AND EXHIBITS APPENDIX B: HYDROLOGIC CALCULATIONS Design Storms N z 0 (71 Ce 00 J 0 ri L/1 5 0 z 2 0 cc LL 0 Lu z a 1- 00 0 J a 11. J z cc z N W z 0 H cc 0 x ri DEPTH (INCHES) Lnn O O 01 O N ,- 1.47 n .--1 RECURANCE INTERVAL (YEARS) cc a LL1 ›- NI 1 5 YEAR 10 YEAR 25 YEAR 50 YEAR 100 YEAR N z 0 cc W 00 Lu 2 J 0 ri 5 a 0 z 2 0 W11.. W z_ a 1- 00 0 J .J a L.. z z 0 N W z 0 H a cc 0 cc 0 tzrx N DEPTH (INCHES) 1.27 0 Tr Ln r-1 00 n ri M r1 N N Tr N N n N RECURANCE INTERVAL (YEARS) 2 YEAR 5 YEAR I 10 YEAR 25 YEAR 50 YEAR 100 YEAR D.R. Griffin Associates, Inc. 307-362-5028 Job # 20347 Composite Runoff Coefficients "C" Composite C Factors 100 YR 1 o 0.36 1 m o a o o � O a o t7 O 0.44 LOO o fi } 14 N 0 M O N N O IN N O IO M 0 N M 0 N Tr 0 Ln M 0 In M 0 Ln M 0 Ln M 0 N et 0 OC >- Ln000 O H co O 00 O O N 000 Ln H O M 0 N 00000 O N O N 0 N 0 M Runoff Coefficients ❑ 06 U O. >, I— l� cc >, O o 1-1 r -i Ln 6 Ln 6 Ln 6 Ln in O m Ln 0 CO Ln O Ln Ln 0 Ln Ln Ln Ln 6 Ln Ln 0 00 Ln 0 } N 00 rn O 00 rn C] 00 M C] Et 0 N 0 0 in 0 ct V 0 rt G4' 0 c4' 0 06 O Ln 0. >- Ln LO O LO O LD ,--I O ll? N O N N O in rn O LO N 0 LO N 0 LL) N 0 LO N 0 in rn 0 Soil Type B 0_ } 0 0606 LO rn LO M LO M ct 666 rl Ct O Ln d' [h 00006 St ct cr V cr 0 Ln 1L' % N N N d N N o N N 0 Ln CO 0 N CO 0 N CI' 0 Ln CO 6 Lf1 CO C] Lf) M O Lf) m O N [1' O cc >- Ln 00 O 6 00 0 6 CO O 6 0 N O Ln c-1 O 0 M O 0 N O 0 N 6 0 N 6 0 N O 0 CO O Impervious (%) 2.0% O N O N 0 N 0 N 0 OCt o 1-1 N 21.0% 0 N o N a Gravel Road (%) 0.0% 0.0 Z O o 0 ul e 0 N 0 g O O o 0 ao 0 0 0 0 o 0 0 SiC7 0 Undeveloped (%) 100.0% 0 O O o 0 O• O 0 0 Ln M1 00 0 O 0 0 0 Ln 0 0 � 0 0 d 0 0 0 0 0 a o o Vr ❑N _ o6N 5 u Ln cr; 0 i 0 0 C7 0 0 0 0 0 Z%.° 0 0 a 0 O o 0 Q 0 0 C? 0.0% 0 0 O a =g O` e. co 0 Ln N N 00 0' 1 1ao.o% 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 es 0 0 100.0% 1 C ma 333 a ce N 76 3 u) 1-4 V) N M M co, (SP1+SP2+ OTHER) 1 tdS 1 N L4/} 1(57+58+59+1 OTHER) IN N 00 N 1 6S 1 I -I y D.R. Griffin Assoicates, Inc. Hydrologic Analysis Rock Springs, WY Pond 10 Upgrade 307-362-5028 Job # 20347 Time of Concentration O H N 0) E H c w d 0 c ro 0 m J6 .} V H Ill Ni m Kt t0 -i r -I co Ni ci N Ln m ri N Lf1 r+i r-1 N LO m c -I r -I ft r ri N ‘1 c-1 N Ln Ni r -I C)1 r -I m ri I N o Ni ri Lgth. (Ft) 4058 Q1 r_i- rI 0 4O to tO ti' N Ln m C 12.42 N 0 VI 16.38 CO LO 0 ai 8.49 9.54 hM o 1.0 2 H 01 Ln rri Lll m M 1.48 ul O rl 10.53 10.40 00 rn e -i N CO r -i N N tO Cfl 00 n c I 2-- --' a m m 2.45 N m 0 1 r 1.00 0 r-I r 1-1 rJ Kt N c -I o e1 w N 0 Q O ul ' r, --1_i LO 14 ,1 r -I r -I m Lr1 N r -L N 4 c a -J V) tl n m at Tr m m m N m LO N m L0 tt N L0 1.0 O N 0 01 al 0 r~I N O N N N 00 N > L) 0 r -I 0 ri 0 r1 0 N 0 ri 0 r -i 0 ri 0 0 ri ri 0 r -I 0 ri Land Type LJJ COCC BARE W CC CO W CC CO W CC CO W CC CO W CC CO UJ UJ CC CC CO CO UJ CC CO W CC CO 0. --- I— M 00 00 Gf N t0 8.75 N 01 Ln in CO Ln 8.08 1 00 O N 7.08 7.08 11 CO O I-: m N .4 Slope 44 m rn-I NO N N rN-I -1 1-1r-IrN -i-i 0 0 D m o r-1 o c-1 0 r -I 0 0 0 In 0 r1 0 ,--4 r -I 0 .,-1-, 2 v 0 Q --co `s' M v N rrl Ir---- 0 r -i N cr; m 00 r -i N Ql o c l ri ry 0 0 ui n r c r -i +-1 Ln O Ln m 0 U 0 ri 0 00 o 0 00 o 0 0 N O Ln +-I O o m 6 0 N 0 0 0 N N 6 0 N 0 0 m 0 c VI CO Tq ,11 Tu. 43 VI t-1 VILN/1 I S3 1 {SP1+SP2+ OTHER) V7 I SP2 j (57+58+59 +OTHER) CO N VI 01 1.41 ce IV/ vi m n -0 cia E o -C L1 cc O Cro oN 4- -CS -C3 C1) O +' C 14 0 E u ' N • - M O L O a CO a -0 cu E ' Eoz 0 o rs L'l a 4- ---. .4-• 3 a L, a o a - 0) C a "O L71 0 `° 0. o O Ln vu Q7 O a O CO O ? to O c O a o 7 0 0EN u Q ± s H iti r -I Oy H_ � a C E 00 j J a) Lr) J L a E IfU 44 II > Li H> H 14 0 _.ii O I- D.R. Griffin Associates, Inc. 4 - en M a 00 fl3 0_ 307-362-5028 Job # 20347 '^ a a -D m (13 c a 0. u $ 43.0 o to CO X 2 a 0 Q. L p u U Q O L a w LA 4 C� N cc c ETo L QO C ea b0 CC '171CLI 71. L' i N 00 Ncfh, ^ ":f • M O011 •O O ni . L0 rt 0 O %4 rn N N 0.64 M ,-1 01 u 6 01 in C1 t +� CM M H N dr M 3.40 Ln N N LO N N 0 LD N LD LI) rn 111 CO M O1 d` M rn fri M C1 as rn O. in N • H 1.25 Ln N H In N H in N H Ln N r -i Lf) N r -I L!1 N H Lf) N H 1.25 Lf1 N ri Q * U cI • N H O H 01 N O N r-1 H 0.59 0.39 I N N O CO H O 01 M Q CO H O in r -t O CC I— 12.42 o N o O I 16.38 cd coo Q 01 8.49 LLnO Q, a Ln Lo Coeff. (C ) 0.30 N. 0 0.27 m Q 0.32 0.42 m 6 0.35 m 6 or O d- Q I mperv. O O O d O d N co H 0.40 N 0 N 0 N 0 N 0 d - 0 u GU Q I 83.46 'Zr Pry I 1.07 J N 000 re; Hi 6N'1 O H al N 0 O OH i -I LHf1 Q 0.35 I C m 7 0. o. ce i N (SP1+SP2+ OTHER) ZdS (57+58+59] +OTHER) Design Point H N r M Tr OH cH-1 Ln N 00 01 LD I=28.9*Pi/(10+Tc)^0.786 Pi = Point rainfall for one-hour duration. See Design Storms. D.R. Griffin Associates, Inc. 307-362-5028 .O N 4- 0 6 ¢ N 4l 4t fC O a Ei)ro C 1 a 0_ u S 110 O C T 0- 0 Rational Method Procedure Design Storm: 100 -Year Developed Travel Time (Min) Lo 00 O N r{ O r -I 000 d coNJ Ln 0 r1 r^-1 c -I o Ni 1.52 Velocity (fps) ri 00• m r -I N m Ln r -I Ln in LD ri Ni N Cr) ri tO r-1 m 00 01 N rN N r1 Cr, O m Length (Ft) VI ,-.1Om1 N cr M m m LD N LO C ri 0 N NN N oN0 N 0 6L ...4....3. N m N r7i N m LD cT r` ri ri m Lf! m 00 N m LD ri 0 N t 0 r -I H r-1 m0 Ni N r -I Ln 01 O 01 ca.e O \ d OLn oa rn c• 4i 0 ei 0 ri Ln 4 d N o ,-i m r` vi `U a MIN ty H N m t N .4Lfl ri moO m N m LD Ti o r• 4 o ei ri r -E m N N o ri 4n 01 o I. - i C O1 N d• N 4.0. 4 Ln LD 4 LD N m 3.77 3.55 N CO 4 IT 01 4 00 N 4 LO Ln 4 LD di- Ln LL ri N -1 ri N• -1 rI N ri rt N r i ri N ri ri r•••• -1 ri N ri rI r` ri rI r. ri rI N. r -i rt n Q umrio r�-I m m •/- rioo r --t O7 00000 N d' N C H d- H d O N Ot-i 0 lct to 00 00 Ol 00 et Ln Ol O 0u Ln LD ,� ov O d• 0 LD M 0 Lfl m 0 d' d' 0 - d: 0 0 Ln 0 d' cr 0 d- d: 0 d' d: o d' d; O O u'1 0 Imperv. (dec) N O O 0.02 N O O ,- ' N O 0.40 I ri N 0 r-1 N 0 -1 N 0 ri N [] O d' O Area (AC) tt) d. m 00 3.74 1.07 H N m 1.83 N O'1 O 61 r -I Ni 00 Ln O- r1 r I Ln 0 Ln m 6 co Swale(s) (SP1+SP2+ OTHER) LdS zds (S7+58+59I +OTHER) ri VI Design Point r1 NI m d' O c�-I Ln N CO O1 LD to to E O LL =28.9 * P1/(10+Tc)^0.786 Q U Z Pi = Point rainfall for one-hour duration. See Design Storms. 307-362-5028 Job # 20347 Required Retention Pond Volume Required Volume for Retention Pond H LL U U ri N m .47 03 Volume for Retention Pond -0 0 JEQJ 2 O E 'L CL IAccum. Vol. I -L-i- 03 m m O 0 00 V Cn M O ,-I N 00 LO ed ^:t t -i .1 ru ri N m 00 LD r -I 0 0 N ii IAccum. Vol. co w o m c-1 o N 43,6411 m tmo Ci N tD m ,-i 0 ,-i m o,--1 ui m r-11 ,-i 0 Lri r• r-1 218,420 IAccum. Vol. +., LL u Q O o O 0 N LD O 0 ct m r-1 0 N ri N 0 r -I r-1 m 0 00 ,-I dr 0 r m Lt 0 0 N LO 0 Accum. Vol. ri LL O 61 t0 N m 00 Lfl 9,442 Lfl Lrl rr ri dl r -I DO r -I 23,400 29,198 Volume r+� LLL O 601 lD N. m o ,� m l.D m -03 0 ri tD 5,205 tT r• Lrl f0 Q- rsi 0 00 .1 Nv N e-1 61 rLrl 00 tD m m 6* Ltl 00 m rI r• m a1 e -i .4' N 01 dr LD Q ,-I t0 � LU Y Li tD 0Q Ln 58371 00 0000 Ln 61 000 Lf) 58401 ri 000 Lfl N 0`30 Lfl m 0000 Lrl 39° 28'38"N 39° 27 SS 8 8 N rn a- ..+' L r L -may.+ n 3 '}.1 - t:a `: +:. rn rnN in7 3 8 737000 737100 737200 737300 Custom Soil Resource Report Map ----Hydrologic Soil Group 7371400 737500 737680 737700 737800 737900 39° 28'38'N a rn � a 8 8 a N 4 4 O 4 0 N Q 8 E 1a8 14' 41" W 1 1 1 1 1 1 737100 737200 737300 737400 737500 737600 Map Scale: 14470 iP printed on A portrait (8.5' x11") sheet. Meters 0 50 100 200 300 O .rt rn M 8 N 737700 7371300 737900 738000 Feet 0 300 600 1200 1800 Map projecbon: Web Mercator Comer coordinates: WGS84 Edge tie: UTM Zone 12N WGS84 7 8 39° 27 57N Custom Soil Fv. _Jurce Report MAP INFORMATION MAP LEGEND The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. To aro E 0 al .C- N E n 0 C O 0 C yR 0 = O 0 a) U_ O . a) O- ? (0 0E (e'nN 7 O o O (AC) r a) a) 0 N N (f) m o 0 a E O N w 0 y 10 O co ` a) U a) N N o ro ag Q7 an 0 ro 7 N 2 . 49 z , E a 0 0 C 0 U C S N ro R7 O z m w K `O v U U 0 d [%1 O 2 1 001 2 \/ H N 0 n . c) CC a. I 0 0 0 ❑ m Q 01< < CO (0 U P. 0 `) c c 4 l (0 Local Roads Not rated or not available a Q N (0 +• U L N U N N (0 M 0 UN 0 N.0 2'6 .L.., a) (3 N N N g1 O `) Ol 0 0)a .- 0 C 9 Q L `) 2 O O) N N 7 O a) 9 c ro E.m m 7 N t `i (`a u O •,-.7 Q O — Z (1) N Q C V v U N L ro 0 O C ro N E d m a.o O O w a) ._ N 0 N10 a..� w N 7 (0O _N .0 M a S7 Q U L 2 O O L 0 0 O O) m Soil Rating Lines ❑ d ❑ Q m m U 0 0 Not rated or not available Soil Rating Points 0 0 0 0 en a) U N 0. ro a 3 To0 a) (0 n. N N (0 a) a) .Q (0 co fl) .co Q co E 16 (1) O Jun 22, 2010—Sep 2, Q tla m' a) b 5 a) a) (a enE 0) .0 'O e 0 O n a ro E Custom Soil Resource Report Table—Hydrologic Soil Group Hydrologic Soil Group— Summary by Map Unit — Douglas•Plateau Area, Colorado, Parts of Garfield and Mesa Counties (C0682) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI Biedsaw-Sunup gravelly C 18.3 22.0% loams, 10 to 40 percent slopes 44 Happle very channery sandy loam, 3 to 12 percent slopes 46 56 B Happle-Rock outcrop B association, 25 to 65 4.2 58.3 5.1% 70.1 % percent slopes Parachute-Irigul-Rhone ; C 1 1 2.4 2.9% association, 25 to 50 percent slopes Totals for Area of Interest 83.2 100.0% Rating Options—Hydrologic Soil Group Aggregation Method: Dominant Condition Component Percent Cutoff. None Specified Tie-break Rule: Higher 9 97,01 all OL9ZLE4 O49ZLE4 OT9ZLE4 M .T£3,1 ..80 Map Scale: 1:1520 if printed on A landscape (11" x 8S') sheet. I I I OL9ZLE4 O69ZL£4 OT9ZL£4 O z M,54 PT ,901 08SZL£4 OSSZL£6 OZSZLE4 064ZLE4 z Custom Soil R .Jurce Report MAP INFORMATION MAP LEGEND The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. -0) c N 0 7E4 U O C O 0 C U CO U) 0 D C) o u' a) '3. 0 0)) a/ 0 17SO0 E roC y 0 ) E E Q cu m U N E 3 m a)4 -0C .. O 0 0 O U) 0 c .0 r A a_Qw0- a) fa O 0 > E mE •ca c +>z' 7 C ` U aaa)6 rnE C t6 7 U U) C N I1) W E 0. N a 0 C 0 CJ -@ N to N rt E° o IrPo m 0 a ❑ a V) E c •F3 w al 0 0 0 Z E U) 2 C 5 ❑ 2 D • • 0 L31.. ' RI C H a) o ' tv L 7 U 3 en a1 p N N I9 R U 67 2 0 L 2[1 U E tco o 0 7 aa))'ElE > c= v--. O 9 u) a n y r a) is `c c @ L m5-,,,5'. 0.> 0 N 7a NUN (/7 -U .' 0. E Ura .�'w ro m a o 8 L y 0 .0 ❑- L a) 4) .0 U t. 0 of la I53 U 16 U Ili t 0. C 0` a) v N c 'V I6 O 41 O.-0 .- 0 a) a) Q'= sn 7 0 t .p t6 To 0 7,:2L 7 � a') ❑- O N r _Uca t9 @ J Go 0 cC N Q L U 5 Z O yT L CO t6 Ali CC C td L ?' a) L N l4 O a) � ' � L-' 3 C o o 7 c al 7 a) ) C y_ O U eU nY O co ` U N U C L 7 a) a) CO C6 o a) CI 0 0) 0 m .fl V n. E (nU m `G.`oQ U -6-- < Q N ill e C O z to Q O T a O ❑ ❑ ❑ .) E b < or 4 d m m U U ❑ `m c C j0 dLJ.gO❑FI1000 we 4 0 Local Roads Not rated or not available L 0. 0 a a � m Soil Rating Lines 0 t N a 0 a f° 0 0 0 ao co o a1 O N 7 v (i N a Lri c o O o O a1 N ya)no CO C N` moa u) CD in A available C ❑ 0 ❑ o a 0 0 4 m m U 0 ❑ Z p) Q m m C 1 try Y {ry l ■y] Y \y(y . 1 i .a g•••• .■■ Jun 22, 2010—Sep 2, Custom Soil Resource Report Table—Hydrologic Soil Group Hydrologic Soil Group— Summary by Map Unit — Douglas -Plateau Area, Colorado, Parts of Garfield and Mesa Counties (C0882) Map unit symbol Map unit name Rating Acres in AOI Percent of A0l 44 Biedsaw-Sunup gravelly C loams, 10 to 40 percent slopes Happle very channery sandy loam, 3 to 12 percent slopes Totals for Area of Interest 0.0. Rating Options—Hydrologic Soil Group Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher 9 3.5 1.2% 98.8% 3.5 100.0%� 39° 28' 14" N 39° 28'0"N 736890 Custom Soil Resource Report Map—Hydrologic Soil Group (Pad Area) 736990 737040 737090 39° 29'14"N i `•fit "i A a 4t..i . f:.`'.\ �; . '�t �fl_` m 1 � � T - � a 39°1e'0•N 736940 736990 737040 737090 737140 737190 Map Scale: 1:2,000 if printed on A paint (8.5" x 11") sheet. 25 50 100 Feet 0 50 100 200 300 Map projection: Web Mercator Corner coordinates: WGS84 Edge Its: UR! Zone 12N WG584 Meters 150 IMP 14 33"W 15 Custom Soil R _.ource Report MAP INFORMATION MAP LEGEND The soil surveys that comprise your AOI were mapped at 1:24,000. Waming: Soil Map may not be valid at this scale. a) o O N N N !V i U ca U N U c o O U O en 0 C N@ '6 C al y'0 A .'6 0 7 0 a) d E cn3 NE O @ a) @ O 0 ) a) S] N N U N lt3 C M .c N@ N c R M [2 O L of a> 0 4_c O co zi EC C7 M E U CL N 111 m p a ❑ Q co N O .0 O_ r W CO ] N O N U = D 0 U C N 1 a) O ,= C t a' d (6 o a) Q '2 C .. a) 2 E O N C a) cc L A 5 N QO 'Dp 0 O o @ N O 0 Cf) a1 'LI 0vW.� 0 a) 0] O a) � O @ _()0�C @ N I2. fZ 7CI E 10 N U 0 ORC N N Nr ` L N , U N al @ OEri N ii°CO 0 C a N 2a@QL❑ 1-3 13 N�"E fi cE m as c c O O @ O O_@OR0 Q LiS) o) U C ii) -% N 0 Q a) ON N 0N N=a N> —f!LC5 rj 0 (33 a E c,) 0 2 Q s¢ o 1-y w00) 0) m m U c c m w E Ea m � U U 0 Z E v) o � R O 4 w 41 412 wc Q 0) N < 0 }, 49 y do a. 0 0 ❑7O J 0 0 4 o 4 a m m U U❑ Z o< 0)0)000 a) c c c or oyI0®®0E0Eco t z 1 z 1 z 02'4 0) Interstate Highways US Routes Local Roads 0 C O Y 03 Aerial Photography Not rated or not available Soil Rating Points Jun 22, 2010—Sep 2, 0 0 4 m m ■ ® • • Custom Soil Resource Report Table—Hydrologic Soil Group (Pad Area) Hydrologic Soil Group— Summary by Map Unit — Douglas -Plateau Area, Colorado, Parts of Garfield and Mesa Counties (C0682) Map unit symbol Map unit name Rating Acres in A0l Percent of AOI 44 Happle very channery sandy loam, 3 to 12 percent slopes Totals for Area of Interest 13.2 13.2' Rating Options—Hydrologic Soil Group (Pad Area) Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher 17 100.O% 100.0% APPENDIX C: HYDRAULIC CALCULATIONS Channel Report Hvdraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 SI Triangular Highlighted Side Slopes (z:1) = 2.00, 2.00 Depth (ft) Total Depth (ft) = 3.00 Q (cfs) Area (sqft) Invert Elev (ft) = 50.00 Velocity (ftls) Slope (%) = 10.40 Wetted Perim (ft) N -Value = 0.035 Crit Depth, Yc (ft) Top Width (ft) EGL (ft) Calculations Compute by: Known Q (cfs) Known Q = 142.32 = 2.27 142.32 = 10.31 = 13.81 = 10.15 = 3.00 = 9.08 = 5.23 Elevft Depth (ft) p Section 30 53.00 52.00 51.00 50.00 49.00 v 0 2 4 6 8 Reach (ft) 10 12 14 4.00 3.00 2.00 1.00 0.00 -1.00 16 Channel Report Hvdraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 S2 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) = 1.09 Total Depth (ft) = 1.50 Q (cfs) = 6.320 Area (sgft) = 1.19 Invert Elev (ft) = 50.00 Velocity (ftls) = 5.32 Slope (%) = 5.80 Wetted Perim (ft) = 3.08 N -Value = 0.035 Crit Depth, Yc (ft) = 1.20 Top Width (ft) = 2.18 Calculations EGL (ft) = 1.53 Compute by: Known Q Known Q (cfs) = 6.32 Elev (ft) Section Depth (ft) 00 51.50 51.00 50.50 50.00 49.50 0 2.00 1.50 1.00 0.50 0.00 0.50 .5 1 1.5 2 2.5 3 3.5 4 Reach (ft) Channel Report Hvdraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 S3 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) = 0.57 Total Depth (ft) = 1.00 Q (cfs) _ 1.790 Area (sqft) = 0.32 Invert Elev (ft) = 50.00 Velocity (ft/s) = 5.51 Slope (%) = 14.30 Wetted Perim (ft) = 1.61 N -Value = 0.035 Crit Depth, Ye (ft) = 0.73 Top Width (ft) = 1.14 Calculations EGL (ft) = 1.04 Compute by: Known Q Known Q (cfs) = 1.79 Elev (ft) Section Depth (ft) 00 51.50 51.00 50.50 50.00 2.00 1.50 1.00 0.50 0.00 49.50 0.50 0 .5 1 1.5 2 2.5 3 Reach (ft) Channel Report Hvdrafow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 S7 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) = 0.59 Total Depth (ft) = 1.00 0 (cfs) = 1.100 Area (sqft) = 0.35 Invert Elev (ft) = 50.00 Velocity (ftls) = 3.16 Slope (%) = 4.50 Wetted Perim (ft) = 1.67 N -Value = 0.035 Crit Depth, Yc (ft) = 0.60 Top Width (ft) = 1.18 Calculations EGL (ft) = 0.75 Compute by: Known Q Known Q (cfs) = 1.10 Elev (ft) Section Depth (ft) 00 51.50 51.00 50.50 50.00 2.00 1.50 1.00 0.50 0.00 49.50 -0.50 0 .5 1 1.5 2 2.5 3 Reach (ft) Channel Report Hvdraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 58 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) = 0.88 Total Depth (ft) = 1.00 Q (cfs) = 2.310 Area (sqft) = 0.77 Invert Elev (ft) = 50.00 Velocity (ftls) = 2.98 Slope (%) = 2.40 Wetted Perim (ft) = 2.49 N -Value = 0.035 Crit Depth, Yc (ft) = 0.81 Top Width (ft) = 1.76 Calculations EGL (ft) = 1.02 Compute by: Known Q Known Q (cfs) = 2.31 Elev( ft) Depth ft ( ) Section 00 51.50 51.00 50.50 50.00 49.50 0 5 1 1.5 Reach (ft) 2 2.5 3 2.00 1.50 1.00 0.50 0.00 -0.50 Channel Report Hvdraflow Express Extension for Autodesk®AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 89 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) = 0.76 Total Depth (ft) = 1.00 Q (cfs) = 1.020 Area (soft) = 0.58 invert Elev (ft) = 50.00 Velocity (ftls) = 1.77 Slope (%) = 1.00 Wetted Perim (ft) = 2.15 N -Value = 0.035 Crit Depth, Yc (ft) = 0.58 Top Width (ft) = 1.52 Calculations EGL (ft) = 0.81 Compute by: Known Q Known Q (cfs) = 1.02 Elev(ft) Depth p (ft) Section 00 51.50 51.00 50.50 50.00 49.50 v .5 1 1.5 Reach (ft) 2 2.5 3 2.00 1.50 1.00 0.50 0.00 0.50 Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 SP1 Triangular Highlighted Side Slopes (z:1) = 2.00, 2.00 Depth (ft) = 0.81 Total Depth (ft) = 1.25 Q (cfs) = 2.830 Area (sqft) = 1.31 Invert Elev (ft) = 50.00 Velocity (ft/s) = 2.16 Slope (%) = 1.00 Wetted Perim (ft) = 3.62 N -Value = 0.035 Crit Depth, Yc (ft) = 0.66 Top Width (ft) = 3.24 Calculations EGL (ft) = 0.88 Compute by: Known Q Known 0 (cfs) = 2.83 Elev (ft) Section Depth (ft) 00 51.50 51.00 50.50 50.00 49.50 0 1 2 3 4 5 6 7 Reach (ft) 2.00 1.50 1.00 0.50 0.00 -0.50 Channel Report Hydra.llow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Friday, Feb 14 2014 SP2 Triangular Highlighted Side Slopes (z:1) = 1.00, 1.00 Depth (ft) Total Depth (ft) = 1.00 Q (cfs) Area (sqft) Invert Elev (ft) = 50.00 Velocity (ftls) Slope (%) = 1.00 Wetted Perim (ft) N -Value = 0.035 Crit Depth, Yc (ft) Top Width (ft) EGL (ft) Calculations Compute by: Known Q (cfs) Known Q = 1.63 = 0.91 = 1.630 = 0.83 = 1.97 = 2.57 = 0.70 = 1.82 = 0.97 E'lev (ft) Depth (ft) Section 00 51.50 51.00 50.50 - 50.00 49.50 0 .5 1 1.5 Reach (ft) 2 2.5 3 2.00 1.50 1.00 0.50 0.00 -0.50 Channel Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Tuesday, Mar 4 2014 SRI Triangular Highlighted Side Slopes (z:1) = 3.00, 3.00 Depth (ft) = 0.32 Total Depth (ft) = 0.33 Q (cfs) = 0.950 Area (sqft) = 0.31 Invert Elev (ft) = 50.00 Velocity (ftls) = 3.09 Slope (%) = 7.30 Wetted Perim (ft) = 2.02 N -Value = 0.035 Crit Depth, Yc (ft) = 0.33 Top Width (ft) = 1.92 Calculations EGL (ft) = 0.47 Compute by: Known Q Known Q (cfs) = 0.95 Elev(ft) Depth p ( ft ) Section 00 50.75 50.50 50.25 50.00 49.75 0 .5 1 1.5 Reach (ft) 2 2.5 3 1.00 0.75 0.50 0.25 0.00 -0.25 Channel Report Fiydrafow Express Extension for Autodesk®AutoCAD+® Civil 3D® by Autodesk, Inc. Thursday, Mar 6 2014 C3 Rectangular Highlighted Bottom Width (ft) = 6.17 Depth (ft) = 1.60 Total Depth (ft) = 2.00 Q (cfs) = 142.32 Area (sgft) = 9.87 Invert Elev (ft) = 50.00 Velocity (ftls) = 14.42 Slope (%) = 2.00 Wetted Perim (ft) = 9.37 N -Value = 0.015 Crit Depth, Yc (ft) = 2.00 Top Width (ft) = 6.17 Calculations EGL (ft) = 4.83 Compute by: Known Q Known Q (cfs) = 142.32 Elev(ft) De Depth p (ft) Section 00 52.50 52.00 51.50 51.00 50.50 50.00 49.50 0 1 2 3 4 5 6 7 5 9 Reach (ft) 3.00 2.50 2.00 1.50 1.00 0.50 0.00 -0.50 co 1 a JOJO PROPERTY b a 3 5 8 JOJO PROPERTY TRACT 38 OXY USA INC. TRACT 83.8 EXISTING OXY LEASE ROAO r.� • • w + • a '0l 4•l •.s.NL ` • M 4S1 • `{j m�z I C o 0 e -- It, m O'g (x) it/VP IIsi JOANSAVAGE--' v c O A X' a n41 t1 tb 0.1 1 g it _ p is m d E z -eve -, b f f sxiaiiiase sE "I, '6 �2 a ea8 asa i8' o t a2 b a 3 5 8 JOJO PROPERTY TRACT 38 OXY USA INC. 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DLL 3111 fss SRO 5.21 MAO SpRoposELI Soso. 28651x5 P+T 5ORFA56 ti LAMM. WATER RFACE fL€v a43.a spl poo R pme MAO Lops MAp� LEVEL Y me Kr BUFFER D+tMLL uLOw. CPACT i SLOPE DIRCALI -- 2,522 - 3b0 C BIRD 125549 P3aT SPARED sn,L KUMLP.P€ AA.Y 6NEA TExTUIEO w LPL LOPE MOTET sLoccoNav UHER SMOOTH® MIL ICP* LLAT LIVER 814 111 FIRE VN€JACCEss RO w MONTE FENCE POSTS ARE InsTALLED AT A1111.2.111 FROM LNOERGROPLO UTILITIES ANCHOR TRENCH DETAIL NOT TO SCALE ODE OF RAD 30 HDRIZON� E 6 0 VERTICAL SCALE VERTICAL EXAGGERATION: 5 [ = HORNERT SCALEI YZ Seas } ass SSC aro E MAS saw NOTES: PRIMARY AND SE404OPRT 0E001400&NE PF 1PERS SHALL BE 50 MEL Twos. LOPE CR 51110 AS E OF W,1125m Dm GAS eCTSERTATI wow 505 2 652 ASST 0R 111mL *0 PIACED 4NOER RECOMMIT Fal cFaRS ifiSCRLATORCLAY LITER SPAM. BE IN ACOOROAVH VM1T1-1 I ACCTURER6 N5TR RIX, LT 3 BE IS AL co PM PAALAPADTuRERSPLETRUCTIONS. BEDDING FOR LAZA%MNL MM111*2.uF LURE CI ® SEDPHG SPECIRCAN Earuss.DE0IXN6 Pa1Nan. LESS TPAN1S% 56.2%D PROCTOR DENSTVAB COOL DV ASTM owe AlAY A uoisTLE STALL FROM23%TO.3%OF5PRMUM4D b M ON DEN1TY 6E4TAG 0ALL P.* SED TO VER 50 P£L00CYS10 A4 DETERMINED DY ASTM 01556 °RASTA DOM PRO1OEDo't KOLL DAS ARE EEASOHABLV am* To TIE'STANDARD PA.T0TOR DEWITT SPEDMENA5 DETERM AE00T 0 LI EDSERSWNEL TESTS➢ SFECIMENO ARE MT REASOLAAY CLOSE To IME 5Tb1OARQ PROCTOR DENS, sPEGV EN. ILCOLI5CL M.I EL PR5TCR CENTry TESTS SW, BE 1 W 15TED 4 SOIL dE0T,LRLDERi3EO1O6TNTIETC AY LINEA S-24.1.1 3 0 EE A ELEAIA REeuL stIFFACE 211517TAGORESSNE ANTE ORDRES. ADIS CRATES. LOO.5E ROCKS CR STONES W EACESSOF 9355.10LARGEST Do040005540 44141 ALLW.TE4545ED PC% BECux02145 SE FREE OF FRACTURED FACTS CAPABLECF PLRNCTURIW n1ELRTR SALEM 041GANC RATER.AL WILL NOT RE 4.1005100 UDDER PT CINTOO LAS GEOTE%TLEFABRIC MAT DE USED FOR SEND TO MATER, IF ALLd5E15 ¢Y MA.T0011,3MAc1542 ER 5 SUBORADE **LOW PROPOSED NMP PAD MA PLTWE TAWS S4LL RE C/-vePACTED PER FRONT. BPEO Coo.. GNEN ABOVE 6. ALL BERM N00AOEMAtERL4L OAS DECOVDPACIETO NOTIEES THAN 50%5TANDARD PRICTO1 DENSITYIAS 511DELER4:IED BY ASRAAT A.IM0111RE CORTERT FROM -1% TO LE% oF (Kelm, IN COMPACTED L0F15M5110E%OE404 EDS' 24 STU DEASITTTES0NG TALL RE USED 10 VERIFY FIELD 4406110 AS140 0TR'R5CRv ASTM 015YGN ASTM RATA PRWCEDI11 OTU SOILS ARE ROMP/Eel CLOSE TO THE S.TNALARD PADCT 2 LENSITV 10011410 A5 CETfRMIDED Dr QUALIFIED PERsorTLEL 1F FIELG TESTEDSPEOME.2SAKE HOT R€ASONAR1V 510500 TIE STAND ARD PROCTOR DENSITY DPE5MER ICOIT5N4E 51..mo PROCTOR CERRTY TESTS11T24 DE CONDUC5ED. IF ACOOT,4N0A 52ELLTEc 005 BE MET VAMS- LIFTS LIFT TACK1ESs SMALL B€ RE'{ACED1.MILOWP54445 RE05*55 N1s GHEE%ET. T DR4R ROCK RACES EL EA4R 4UW OTt TIE%TRT% AIA SWT" ENCS OF THE P06D%MALL SE RCMAED TO PREVENT LI4542411 AE GRADING OF THE CRAIN ROCK DWL BE NCR PA.,* LME 1 1221SIEVE AVD O% P0SDW TIE t? DEA€ REVISIONS NO. DATE DESCRIPTION D 44014 ISSUED FOR PERMIT BY CSW CHK LT30 APAR 1414 ELK 6T, SUITE 202 REFFIN6 ASSCCIATFF, INC. 4..,5. KlNca, W4... IaeTl34x-wx5 ISSUED FOR PERMIT 04/01/1014 CIXY v FONT' IOUPGRADE 1ROFl1E STEWS STALE:AS5RDYfN JCD NO.: 2031T A-5 GARS IEL000II ORADO REV D *HEST 304 11 ffe ¢TAME 445 \5 ,— E PROPO IA OR 4 1102.9119L11102.9119L1WA LER SuRFACE fj1/ /// /71/Y7 / -- \ } FILL I 1 .K. � \ \ fLEVAT1oV.aeLIB //• .e\ fs�aTwal c NT SFAGE FAISTIN¢PIT frukF4cE \ \g, ��'\\.\ _. ,\. \. c4T \ > 27 PROPOSED 655P000 595 _.. \ \_ ELEWAION=51]5.3' 1 1 // \ \�-VY-' / • ,L GRAUL _ _ _}_ \ _ _- t h. GRnOE v_ � '-- ,S} �. --`. //FLE4AT ... _ DR 929 3' .. .. .... .-- _ - .811 \ FILL _ — ELEVATION 5216.6 ... _ ... MAp� LEVEL Y me Kr BUFFER D+tMLL uLOw. CPACT i SLOPE DIRCALI -- 2,522 - 3b0 C BIRD 125549 P3aT SPARED sn,L KUMLP.P€ AA.Y 6NEA TExTUIEO w LPL LOPE MOTET sLoccoNav UHER SMOOTH® MIL ICP* LLAT LIVER 814 111 FIRE VN€JACCEss RO w MONTE FENCE POSTS ARE InsTALLED AT A1111.2.111 FROM LNOERGROPLO UTILITIES ANCHOR TRENCH DETAIL NOT TO SCALE ODE OF RAD 30 HDRIZON� E 6 0 VERTICAL SCALE VERTICAL EXAGGERATION: 5 [ = HORNERT SCALEI YZ Seas } ass SSC aro E MAS saw NOTES: PRIMARY AND SE404OPRT 0E001400&NE PF 1PERS SHALL BE 50 MEL Twos. LOPE CR 51110 AS E OF W,1125m Dm GAS eCTSERTATI wow 505 2 652 ASST 0R 111mL *0 PIACED 4NOER RECOMMIT Fal cFaRS ifiSCRLATORCLAY LITER SPAM. BE IN ACOOROAVH VM1T1-1 I ACCTURER6 N5TR RIX, LT 3 BE IS AL co PM PAALAPADTuRERSPLETRUCTIONS. BEDDING FOR LAZA%MNL MM111*2.uF LURE CI ® SEDPHG SPECIRCAN Earuss.DE0IXN6 Pa1Nan. LESS TPAN1S% 56.2%D PROCTOR DENSTVAB COOL DV ASTM owe AlAY A uoisTLE STALL FROM23%TO.3%OF5PRMUM4D b M ON DEN1TY 6E4TAG 0ALL P.* SED TO VER 50 P£L00CYS10 A4 DETERMINED DY ASTM 01556 °RASTA DOM PRO1OEDo't KOLL DAS ARE EEASOHABLV am* To TIE'STANDARD PA.T0TOR DEWITT SPEDMENA5 DETERM AE00T 0 LI EDSERSWNEL TESTS➢ SFECIMENO ARE MT REASOLAAY CLOSE To IME 5Tb1OARQ PROCTOR DENS, sPEGV EN. ILCOLI5CL M.I EL PR5TCR CENTry TESTS SW, BE 1 W 15TED 4 SOIL dE0T,LRLDERi3EO1O6TNTIETC AY LINEA S-24.1.1 3 0 EE A ELEAIA REeuL stIFFACE 211517TAGORESSNE ANTE ORDRES. ADIS CRATES. LOO.5E ROCKS CR STONES W EACESSOF 9355.10LARGEST Do040005540 44141 ALLW.TE4545ED PC% BECux02145 SE FREE OF FRACTURED FACTS CAPABLECF PLRNCTURIW n1ELRTR SALEM 041GANC RATER.AL WILL NOT RE 4.1005100 UDDER PT CINTOO LAS GEOTE%TLEFABRIC MAT DE USED FOR SEND TO MATER, IF ALLd5E15 ¢Y MA.T0011,3MAc1542 ER 5 SUBORADE **LOW PROPOSED NMP PAD MA PLTWE TAWS S4LL RE C/-vePACTED PER FRONT. BPEO Coo.. GNEN ABOVE 6. ALL BERM N00AOEMAtERL4L OAS DECOVDPACIETO NOTIEES THAN 50%5TANDARD PRICTO1 DENSITYIAS 511DELER4:IED BY ASRAAT A.IM0111RE CORTERT FROM -1% TO LE% oF (Kelm, IN COMPACTED L0F15M5110E%OE404 EDS' 24 STU DEASITTTES0NG TALL RE USED 10 VERIFY FIELD 4406110 AS140 0TR'R5CRv ASTM 015YGN ASTM RATA PRWCEDI11 OTU SOILS ARE ROMP/Eel CLOSE TO THE S.TNALARD PADCT 2 LENSITV 10011410 A5 CETfRMIDED Dr QUALIFIED PERsorTLEL 1F FIELG TESTEDSPEOME.2SAKE HOT R€ASONAR1V 510500 TIE STAND ARD PROCTOR DENSITY DPE5MER ICOIT5N4E 51..mo PROCTOR CERRTY TESTS11T24 DE CONDUC5ED. IF ACOOT,4N0A 52ELLTEc 005 BE MET VAMS- LIFTS LIFT TACK1ESs SMALL B€ RE'{ACED1.MILOWP54445 RE05*55 N1s GHEE%ET. T DR4R ROCK RACES EL EA4R 4UW OTt TIE%TRT% AIA SWT" ENCS OF THE P06D%MALL SE RCMAED TO PREVENT LI4542411 AE GRADING OF THE CRAIN ROCK DWL BE NCR PA.,* LME 1 1221SIEVE AVD O% P0SDW TIE t? DEA€ REVISIONS NO. DATE DESCRIPTION D 44014 ISSUED FOR PERMIT BY CSW CHK LT30 APAR 1414 ELK 6T, SUITE 202 REFFIN6 ASSCCIATFF, INC. 4..,5. KlNca, W4... IaeTl34x-wx5 ISSUED FOR PERMIT 04/01/1014 CIXY v FONT' IOUPGRADE 1ROFl1E STEWS STALE:AS5RDYfN JCD NO.: 2031T A-5 GARS IEL000II ORADO REV D *HEST 304 11 74.4'~ LEAK OERECT,OE I' a 1' LIAR of -MOTION SUMP WITH ORA! PP ROC IC 121 0110E ENEROSROY ESCAPE LADDER CPOLY BITE WEIL — LEAK DETECTION SITE PLAN NOTE: SCALE 1'• 2ff EMERGENCY ESCAPE LADDER SYSTEM SM&SL EE INSTALLED ON THE SLBIOE ROPES OF THE PP THEY SHALL CONSIST H ASNAIL 'Tµ4Y TA THEMARY RDN. DNNUN,. ROADS FACING 00SAADNS BE KEEN RUNGS DULL BE 2C PAO A. A. O E LADDER SRE NISTALLED RI EACH ENO OF POND It S1 MTOOPP:LE EXCESS SWALE SPOIL EISEAMISIE pi S1OA<RLE EXCESS SWALE EPOS CN DOEXPALL MOEAD AELMLE DENSITYSO,OMW 33, SP2, S7, SB 8 89 POO -SPIED EXCESS SHALE SPC. DN[ D OMINLL SIDE AND =NAACP TO APPA XP ATE DENS, SFS:AROUND,. NATNE BDL SR1 2 LP AO DAD=PPILE ESSE. S.N.E SPOIL ON WMPILL SDE Are ecHPACT TO APPROYIMATE DENSTY OF MARROW. WI NATIVE sal CESS AV ALE SPCA ELSEYMERE HOPE MAPPERA CE ACD LYEAW NG OF ALL SMGES HILL BE REOGRED AN A REGULAR BARE AND AFTER EAU, SDMPCON STORM SWALE DETAIL SCALE: I' T EXD+UScN NEED -ALL 1. HAY AROWD PRIMARY LAMER N MIL OPE NO ES 1 vspor FMEswu.6 FNETPACE PREPAY IAEA CA, VENTS SHALL RE DAMPED AT sr PC ALCMS YME IOP 1. DE PExMETER OF NEE Pt USER VENT DETAIL NOT TO SCALE TOP M -a SSE GEONEI ORA.PPROY DEOPP. ENMIL MUNE SESSAUARYLINEA INSCALL ECNER CN MUTE T. PRDARYLPER HALL BE PUBED DRECTLY TO THE SH OPE PIPE ACCURATE PESETRAn>. METHODS MAY BE LAA, If APPROVED -EY IRE OPER MAMFACIURER PRIMARY LINER PIPE PENETRATION NOT TO SCALE SO MIL 1-01. PR MARY C, ER E ETIT caL70 7144ORA:x IGIFN 1.GEOSYNrHETIE CLAYLI.11 NOTE CDLLECTICNDLVR ROCS SAIM. BE RD... TO SRUENN USER PUNCTURE GRADNG1 AEE DRAM ROCK SHALL BE PIA PASSING TAE 1 t? SIVE AID CR PAR9Np TME IR' 9EVE LEAK DETECTION COLLECTION TRENCH DETAIL NOT TO SCALE ISbrALL OEOTEXTLE FABRIC AS UNEAMLVIAACRKIFR. APDUND DRAPE ROCK NO. DATE REVISIONS DESCRIPTION D 402114 ISSUED FOR PERMIT BY csw CHX LCD APPR ISSUED FOR PERMIT 04/0212014 /1 OXY 16, ROCAii MOS,, WYIli9G', RKFiNd AS%AC4,lE& mc. 17071 x03011 POND IO UPGRADE LFAR, DETECTION, LINER, AND SWALE DETAIL SCALE: AS SHOWN 400 No 20147 A.9 Rev13 OARFIE CO COUNTY, COLORADO 1 SNEET M Of 1A rt ler Y 0NDEOCATTLE CATTLE GUAM 00000 TO 4LLOWBW4LE M W NTE1.'AAVYE M000Ewall 111P711""010110.E svuE 6ViCEN 9 CATTLE CATTLE GUARD DETAIL END VIEW (CI & C2) NOT TO SCALE MIN 010,01N00141.4ETER TTP 3-1,2 rfP 8E4.44E° SP LAP P4 NMUM T' .. s21119,8 17 IF 4,0E0 ARE NEEDED FOOTING DETAIL END VIEW (CI & C2) SCALE1'- 1' CATTLE GUARD PIAN VIEW (CI & C2) SCALE MOTES cacRETEP00DNCS SHALL E01110 Y 9E4.0 RC CATTLE GUARD FRAME ON E4Oi END 3 0122314E0000.0 s9SF SLIGHTLY LONW ER TWTOP DE CATTLEGWFO a 4 I.04ERU2 SELOW PECTIN00PM SNM;L BE CO41P4CTEP.TO NOT LESS 90 12141434.41012141434.410 PROCTORCEN1TT As 11ETEAMIEc0YASDF04AT A LWISTUN.EOCNTENT 4104L.% 4405 IL TO OPPMUMIN tIETS NOT ERCEET001 S' comP4c1ED 0EPTN IN Ma DENSITY IES%NGGIMLL DE4041910 NENIFYFl ELDGE555045 DETERMINED SY/.STM DI410T'4 00 * P:ON'ID4IN SITU s0LE ARE REAS.:744 v cFFSE 10 TEESTMWR0 PROCTOR DENSON EPEOMFNAS DETERv240 DY 0Ux41I4 PEAsO*14 IEI IF FIELD TESTED SPECIMENS ANIDI REAWIv3Lr 405E TO TIE 4 CR DENSITY s•10 MEN. ACOTILXPL SrNAYRO PROCTOR OENSTY TESTS Sn4LL DE COI5UCSEO tF COMPACTION REO0R0EEW0SCNma0BE MET YATM r VETS. UFT TMIXIESS sw,L EE REDUCED 01010194C140141100!1940411014 CAH EE MET R0A0 SURFACE ESTIMATED MATERIALS FOR CATTLE GUARDS ITEM DETAII miouNS Ep 5(01 cNVt.4 WN ICI8 cRl 9O 4 OVXT F4SEM.x31 AMDUN39 coNCRETE 3540 F910.03 CV n 4X.09 -DOLT 34. F IYWr&2Tc4N0 W45NFA MON. 4E4, 4 EA 20 El *915(0164X01MI1 WORA4E 40 ETEEL REBAN 240LR1 1X9 LR c4TTLf509110 r FLO'NE.4w DUTYWINGED 1E4 1 EA 010 .12-104.09 DOLT 4 EAO1I2 004 DJrl rls110LIC1TnE CAME GUM J/' GUARD TO ALLOW MALE 1.047.414. NVD0.EN4ar1 nnnnn,nnnn nnr f_ f `RDW 5uRF4CE -l1 3 CATTLE GUARD DETAIL END VIEW(C3) MOTTO SCALE 1..4.4 EO SP f 1411 0C l LAP 14 E.93 4 4NbUUM 3T IF SPICES ARE IEEOEO FOOTINGDETAIL END VIEW (CI) SCALE 1" • I' 7 1 CATTLE GUARD PLAN VIEW (C3) SCALE: 1' • IP REVISIONS GATE 42114 ISSUED FOR PERMIT DESCRIPTIO BY CSN 010( LOB APPR 1414 ELM ST., 5MITE315 RIFFIW8 ASSOCAATES INC. AM%I�SI3653031T9ib1 POND 10 UPGRADE ISSUED FOR PERMIT 04/02/1014 OXY `! SCALE: ASSN 00DNP.: MUT CATTLE GUARD DETAILS A.10 REV D 0LNE4LDCOUNrv,C0L0RA90 I0029T 100F11 EXISTING ONV LEASE ROAO k LJ P1101.GEG1CIVIN UP AREA S9 u� 0.`u PFR .AC-]. ig g4 a Si ; •• • • g CNVNrN f106.21 Qtld ♦♦ ,o,P.z.. 8 E \X 0 0 n �a • ■ ,0m fdal JO SNAG 0 z z 1 e • ■ • ••ry% •~�•• • i 74,JEc7AREq�..r H6UWDARY • .4 gith iggg J — JOJO PROPERTY a S Z VX E 1.1 1 EXISTING OXY LEASE ROAD J 3 a 0 n •� 7k► L- ♦. •• 1 •. Y� a • • SAVAGE LIMITEO PARTNERSHIP I & GEORGE M. ANDERSON REVOCABLE TRUST — JOANSAVAGE O • •ti..1. I`r mmit •• rt rr.•1�• •aa... 0 - • r r 4 I� • 2 JOJO PROPERTY EXISTING OXY LEASE ROAD ti 4r le. • til 3'1 uil 11 .i }? 1`I }'} I+ Il 4 7l';yfi J}I Og (R) II 0 CZ ='a n" [ 9 SAVAGE LIMITED PARTNERSHIP 1 e, GEORGE M. ANDERSON REVOCABLE TRUST JOANSAVAGE--- • 0 OXY USA WTP LP OXY 760 Horizon Drive, Suite 101 `e/ Grand Junction, CO 81506 rC") Pond 10 - Surface Water Map Revised: February 26, 2014 Garfield County, Colorado 0 0.05 0.1 0.15 Miles Zrr /1-3 aer Age ,mate distances in feet from Pond 10 to: Conn Creek = 330' Unnamed Intermittent Drainage A = 10' Unnamed Intermittent Drainage B = 928' Unnamed intermittent Drainage C = 511' ti gm Pond 10 C) 1,000 ft buffer around Pond 10 Perennial Stream ""s.... Unnamed Intermittent Stream 0%0 Pond 10 Access Road Oxy Responsible Road 6A.:51 Unimproved Public Road Gravel Public Road 4%/ Paved Public Road "111146, OXY USA WTP LP OXY 760 Horizon Drive, Suite 101 Grand Junction, CO 81506 Pond 10 - Monitoring Well Map Revised: January 21, 2014 Garfield County, Colorado 0 0.02 0.04 0.06 0.08 0.1 Miles Upgradient monitoring well Downgradient monitoring well lQ Pond 10 Pond 10 Access Road 1-Nt1/4,.# Oxy Responsible Road I%. Unimproved Public Road 0/ Gravel Public Road 0%I Paved Public Road r. ".111111k OXY USA WTP LP OXY 760 Horizon Drive, Suite 101 %mof Grand Junction, CO 81506 Pond 10 Floodplain Map Revised: January 21, 2014 Garfield County, Colorado 0 0.4 0.8 1.2 1.6 2 Miles ji; Pond 10 Floodplain (Mesa County GIS) 1.-\r Pond 10 Access Road Oxy Responsible Road ' '% , Unimproved Public Road Gravel Public Road 4/ Paved Public Road STORMWATER MANAGEMENT PLAN FOR CONSTRUCTION ACTIVITIES Cascade Creek Common Plan of Development Garfield County, Colorado Prepared For: /1 OXY OXY USA WTP LP 760 Horizon Drive, Suite 101 Grand Junction, Colorado 81506 Prepared by: \ OLSSON ASSOCIATES Olsson Associates 760 Horizon Drive, Suite 102 Grand Junction, Colorado 81506 Project # 011-2824 Cascade Creek CPD SWMP in effect as of March 2009 Revision: Dec 2013 Administrative Log Cascade Creek Common Plan of Development OXY USA WTP LP Date: Editor: Edited Section and Page No: Change (s) to Stormwater Management Plan: 3/30/2010 Olsson 3.0a Update to legal and local contacts. 4/8/2010 Olsson 1.0 Combinin• permits. 5/21/2010 Olsson 3.0a Update to administrator, legal and local contact. 7/2010 Olsson 3.0a Update to stormwater administrator. 12/13/2010 Stormwater Administrator (C.Gudort) Throughout Updates to SWMP. 4/20/2011 Stormwater Administrator (C.Gudorf) Sections: 1.0, 2.0, 3.0, 5.0 Updates to SWMP. 5/2/2011 Stormwater Administrator (C.Gudorf) Sections: 1.0, 2.0, 3.0, 5.0 Updates to SWMP. 06/06/2011 Stormwater Administrator (C.Gudorf) Table 3-7 06/28/2011 Stormwater Administrator (C.Gudorf) Pg. 2, 3, 24, 26, 30 Changes per Doug Weaver 10/062011 Stormwater Administrator (C.Gudort) Site Maps in Section 2.0; Appendix A; 5.0.8; 1.0b Stormwater Site Maps; update to construction site boundary; CDPHE Modification form construction site boundary; update to SPCC inspection schedule; update to access roads. 10/21/2011 Stormwater Administrator (C.Gudorf) Site Maps in Section 2.0; Table 3 and Table 5. Updated site map to include new pipelines, updated table 3 and 5 to include new pipelines. 12/19/2011 Stormwater Administrator (C.Gudorf) Site Maps in Section 2.0; Updated site map to include new pipelines and well pads 2/29/2012 Stormwater Administrator (C.Gudorf) Tables 3, 4 & 5 Updated vegetation and receiving waters 3/6/2012 Stormwater Administrator (C.Gudorf) Tables 3 & 4 Updated vegetation and receiving waters 5/21/2012 Olsson Section 1.c Section 2.0 Tables 3, 5, 6 Removed Logan Wash Rd (/Trail Ridge Rd) from SWMP (Rec Waters Table, Veg Table, Seed Mixes, overall site maps); updated disturbed acreage. 6-2013 Olsson Al! SWMP updated/ re -written into new template, new overview maps 12-2013 Olsson 1.A, 1.C, Project Site Overview Map, NRCS Soils Units Map Disturbed acreage and overview maps updated to reflect sites added back into inspections after damage from July storm. OXY USA WTP LP, Certification Stormwater Management Plan for Cascade Creek Common Plan of Development Garfield County, Colorado Olsson Associates has prepared this Stormwater Management Plan for Construction Activities for OXY USA WTP LP for the Cascade Creek Common Plan of Development located in unincorporated Garfield County, Colorado. "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: Chris Clark Title: Operations Manager Date: TABLE OF CONTENTS INTRODUCTION 1 Stormwater Runoff Permitting Requirements 1 Project Description 1 1. CONSTRUCTION SITE DESCRIPTION 2 1.A Nature of Construction Activity 2 1.6 Sequence of Construction Activities 2 1.0 Estimate of Total Area of Site and Area to be Disturbed 5 1.D Soil Data and Erosion Potential 5 1.E Vegetation Description and Estimate 6 1.F Potential Pollution Sources and Locations 7 1.G Non-Stormwater Discharges 7 1.H Receiving Waters 7 2. SITE MANS) 7 2. A Construction Site Boundaries 7 2. B Areas of Ground Disturbance 7 2. C Areas of Cut and Fill 7 2. D Storage Areas 7 2. E Location of Asphalt and Concrete Batch Plants 7 2. F Locations of Structural BMPs 7 2. G Locations of Non -Structural BMPs 7 2. H Locations of Springs, Streams, Wetlands and Other Surface Waters 7 3. STORMWATER MANAGEMENT CONTROLS 8 3.A Stormwater Administrator 8 3.6 Potential Pollutant Sources 8 3.0 BMPs for Stormwater Pollution Prevention 9 3.C.1 Structural Practices for Erosion and Sediment Control 9 3.C.2 Non -Structural Practices for Erosion and Sediment Control 9 3.C.3 Phased BMP Installation 9 3.C.4 Materials Handling and Spill Prevention 10 3.C.5 Dedicated Asphalt or Concrete Batch Plants 11 3.C.6 Vehicle Tracking 11 3.C.7 Waste Management and Disposal, Concrete Washout, and Contaminated Soils 12 3.C.8 Ground Water and Stormwater Dewatering 12 4. FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT 12 5. INSPECTIONS AND MAINTENANCE PROCEDURES 13 OXY USA WTP LP i Olsson Associates Cascade Creek SWMP LIST OF TABLES Table 1 Table 2 Table 3 Table 1-1 Table 3-1 Vegetation Descriptions Typical Seed Mixture Down -Hole Chemicals/MSDS Inventory Soils Data and Erosion Potential BMP Phasing LIST OF FIGURES Figure 1 Project Site Overview (/Receiving Waters) Map LIST OF APPENDICES Appendix A Certification: COR -038414, General Permit: COR -030000, and Related Docs Appendix B NRCS Soil Unit Map & Soil Descriptions Appendix C Inspection Report Form and Example Site Map Appendix D Best Management Practice (BMP) Manual Appendix E BLM Gold Book, Chapters 4 and 6 OXY USA WTP LP ii Olsson Associates Cascade Creek SWMP INTRODUCTION This Stormwater Management Plan (SWMP) for Construction Activities is written to comply with the Colorado Department of Public Health and Environment (CDPHE)'s General Permit No. COR -030000, issued on July 1, 2007 and administratively continued on June 30, 2012 to remain in effect until the new permit being developed by the Water Quality Control Division is issued and effective, and with related U.S. Environmental Protection Agency (USEPA) National Pollutant Discharge Elimination System (NPDES) stormwater regulations. This SWMP addresses construction activities associated with OXY USA WTP LP (Oxy)'s oil and gas exploration and production activities at the Cascade Creek Common Plan of Development (Cascade Creek), in Garfield County, Colorado. A copy of the certification to discharge (COR - 038414), the Colorado Discharge Permit System (CDPS) general permit (COR -030000), and related documentation can be found in Appendix A. This SWMP is intended to be revised as necessary to address planned developments, new disturbances, and other changes required to manage stormwater and protect surface water quality. These changes shall be documented in the Administrative Log located at the front of this document. Stormwater Runoff Perm itting Requirements The Federal Clean Water Act [Section 402(p)] requires that discharges of pollutants to waters of the U.S. from any point source be regulated by NPDES permits. In November 1990 the EPA published final regulations that established application requirements for stormwater 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 EPA published final Phase II NPDES regulations that established application requirements for stormwater 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. On June 30, 2005, Colorado stormwater regulations went into effect to require CDPS permits for stormwater discharges from construction activities for oil and gas activities (1 acre or greater). Federal permit coverage for these discharges was conditionally exempted from the Federal Clean Water Act by the 2005 Federal Energy Bill. On February 1, 2006, the CDPHE issued a letter clarifying that the CDPHE Water Quality Control Commission decided to maintain the existing requirements for stormwater permitting for oil and gas construction sites greater than 1 acre. Project Description Oxy's Cascade Creek area is located in Garfield County, Colorado, north of the town of De Beque. The project site is divided into three smaller well fields: Mesa, Valley, and Logan Wash. The three fields are located within Township 5 through 8 South, Range 96 and 97 West, of the 6th PM. See Figure 1 for an overview map of the project site. The current drilling and development plan includes well pad, access road, and pipeline construction, well drilling, well testing, well completion, and installation of associated facilities. OXY USA WTP LP 1 Olsson Associates Cascade Creek SWMP 1. CONSTRUCTION SITE DESCRIPTION The following section provides a description of the construction activities. 1.A Nature of Construction Activity Construction at Cascade Creek will be performed using conventional cut and fill earthmoving techniques and trenching. The total estimated disturbance for all current and planned pads, pipelines, and access roads is approximately 800 acres. Reserve pits may be constructed for use during operations to contain drilling fluids and cuttings. The pits will be designed, constructed, and reclaimed according to COGCC requirements. In areas that are disturbed by construction, topsoil will be stripped and stockpiled near the site. All brush, limbs, and other woody material will be stockpiled separately from the topsoil. Soil materials will be managed so that erosion and sediment transport are minimized. Nearby drainages will be protected by appropriate measures. If a well is not productive, it will be plugged and abandoned in accordance with COGCC rules and the pad area will be reclaimed to approximate pre-construction contours and seeded. Construction and reclamation activities will also be completed, if and where appropriate, in accordance with BLM Gold Book Chapters 4 and 6, which are included as Appendix E. 1.B Sequence of Construction Activities The development of a natural gas well is generally accomplished in six work phases. They include: access road and pad construction, well drilling, well completion, production, interim reclamation, and final reclamation. Each work phase is briefly discussed below and the BMPs are discussed in Section 3.C. Access road and pad construction Pad and access road construction will be performed using traditional cut and fill construction. Blasting is also used in some areas. Size and maintenance requirements for each access road are based on road location and traffic level. Reserve pits may be constructed on the pads at this time to store certain fluids and solids during drilling and completion operations. No fluids or solids, excluding any accumulated stormwater, will be stored in the reserve pits during this phase. Basic construction activities that are conducted during this phase include clearing and grubbing, segregation of topsoil for use in reclamation, grading and excavation, compaction, final grading and contouring, and installation of surfacing materials such as gravel. To the extent possible, BMPs that will be utilized to control stormwater throughout the life of the facility will be constructed during this phase. Sediment discharge is the main potential pollutant of concern during access road and pad construction. No chemicals or fuels will be stored on site during this phase; however, attention will be paid to the potential for leaks that might occur during the use of construction equipment. Well drilling The well drilling phase includes the drilling of one or more wells at each location. Activities associated with the drilling phase may include: • Mobilization of the drilling rig and associated equipment, including generators and drilling-mud handling equipment. In some instances a smaller drilling rig may be used to drill the initial stages of each well prior to the larger drilling rig mobilizing to the location Installation of storage, office and housing trailers OXY USA WTP LP 2 Olsson Associates Cascade Creek SWMP • Storage of down hole chemicals, fuels and lubricants • Installation of potable water tanks and sewage -handling equipment (e.g., portable toilets or sewage vaults) • Well drilling activities including the installation and cementing of well casing • Demobilization of the drilling rig and all other equipment at the completion of this phase Drilling mud and water will be used to maintain appropriate down hole pressures and lubrication. Unused fresh water and mud chemicals will be stored on the pad. Used materials will be discharged to the reserve pit, or captured in tanks during closed-loop drilling processes. Petroleum products are used for the duration of the drilling process to fuel or lubricate equipment and include: fuel, gear oil, hydraulic oil, brake fluid, and grease. Materials to be used to cement casing placed in the well may also be stored and prepared on location or may be transported to the site. Sediment discharge, unused mud chemicals and/or well casing materials, used drilling water/mud, and petroleum products are potential pollutants of concern during this phase of construction. Procedures will also be implemented for prompt containment and remediation of any spills that may occur during the drilling phase. These procedures are outlined in Oxy's Cascade Creek Spill Prevention, Control and Countermeasures (SPCC) plan. As equipment is demobilized at the completion of this phase, the well pad and surrounding areas will be carefully inspected to identify any spills or leaks that may have occurred so that those areas can be remediated prior to initiation of the well completion phase. Well completion The well completion phase may include hydraulic fracturing (fracking), cementing, and other processes that stimulate the well and prepare it for production. The basic activities that are conducted during this phase include: • Mobilization of equipment required for well completion • Storage of down hole chemicals, fuels and lubricants Installation of potable water tanks and sewage -handling equipment (e.g., portable toilets or sewage vaults) or continued maintenance of such equipment installed during the drilling phase • Fracking and other well -stimulation processes Drill out of any plugs placed during well completion with a work -over rig • Flowback of the well to remove frac water, sand and other impurities • Demobilization of equipment when this phase has been completed Several temporary facilities/structures will be placed on site during this phase. These will include: frac trucks, storage and office trailers, generators, and frac tanks. During completions, certain chemicals may be used to stimulate the formation for the extraction of natural gas. Unused water and chemicals will be stored on the pad. Used water will be stored in the reserve pit, recycled, or used in other operations. OXY USA WTP LP 3 Olsson Associates Cascade Creek SWMP Sediment discharge, unused and used chemicals, frac water, and small amounts of equipment lubricant or fuel are potential pollutants of concern during this phase of construction. Procedures outlined in the SPCC plan will also be implemented for prompt containment and remediation of any spills that may occur. As equipment is demobilized at the completion of this phase, the well pad and surrounding areas will be carefully inspected to identify any spills or leaks that may have occurred so that those areas can be remediated prior to initiation of the production phase. Production The production phase includes the installation of long-term facilities such as permanent well heads, storage tanks, oil and natural gas processing equipment, flow measurement equipment, and any associated flow lines needed to produce gas from the formation. Pipeline installation or any required maintenance work is generally accomplished by trenching. The area of disturbance for each pipeline project is determined by location, pipeline size, and the scope of the work being done. Sediment discharge, produced fluids, and small amounts of equipment lubricant, fuel, corrosion inhibitors or other chemicals are potential pollutants of concern during this phase. Procedures outlined in the SPCC plan will also be implemented for prompt containment and remediation of any spills that may occur. Interim reclamation The interim reclamation phase includes the contouring of the majority of the pad to a smaller area. The reduced area will be utilized for long-term production and ongoing routine maintenance of the well(s). In general, this phase includes contouring of the site, spreading of topsoil on contoured areas and seeding those areas. Sediment discharge, produced fluids, and small amounts of equipment lubricant, fuel, corrosion inhibitors or other chemicals are potential pollutants of concern during this phase of construction. Procedures outlined in the SPCC plan will also be implemented for prompt containment and remediation of any spills that may occur. Permit coverage may be inactivated for oil and gas construction sites even if stabilized unpaved surfaces exist and/or disturbed land that has been restored to cropland remains non -vegetated, as long as construction activities have been completed and all other disturbed areas are re - vegetated. Final reclamation When the production of a well is exhausted, it will be abandoned. Upon well abandonment each borehole will be plugged, capped, and all surface equipment will be removed. Subsurface pipelines will be removed to specified locations or abandoned in place as per COGCC Rule 1103. The pad area will be reclaimed by contouring disturbed soils to conform to the surrounding terrain, by redistributing the stockpiled topsoil, seeding of disturbed soil areas in order to reestablish cover vegetation, and by construction of any permanent erosion and sediment control structures as needed. Sediment discharge is the main potential pollutant of concern during this phase. No chemicals or fuels will be stored on site during this phase; however, attention will be paid to the potential for leaks that might occur during the use of construction equipment. OXY USA WTP LP 4 Olsson Associates Cascade Creek SWMP 1.0 Estimate of Total Area of Site and Area to be Disturbed The total project site encompasses approximately 29,800 acres. The total disturbed acreage for the project is approximately 800 acres. As new sites are added to the project site, or as sites reach final stabilization and are removed from the permit, the SWMP will be updated to reflect the changes. 1.D Soil Data and Erosion Potential Runoff characteristics are based primarily on site topography, soil type, and vegetative cover. The major soil types for the areas of disturbance are: Biedsaw-Sunup gravelly loams, 10 to 40 percent slopes; Debeque very channery loam, 5 to 20 percent slopes; Grobutte very channery loam, 30 to 60 percent slopes; Happle very channery sandy loam, 3 to 12 percent slopes; Happle-Rock outcrop association, 25 to 65 percent slopes; Northwater loam, 15 to 65 percent slopes; Northwater-Adel complex, 5 to 50 percent slopes; Parachute-Irigul complex, 5 to 30 percent slopes; Parachute-Irigul-Rhone association, 25 to 50 percent slopes; Parachute -Rhone foams, 5 to 30 percent slopes; Silas loam, 1 to 12 percent slopes; Tosca channery loam, 25 to 80 percent slopes; and Utso-Rock outcrop complex, 40 to 90 percent slopes. The major soil types are moderately well to well drained soils with a very low to very high (-2.7 inches to -26.7 inches) water holding capacity. A Natural Resources Conservation Services (NRCS) unit map and soils descriptions for the dominant soils in the construction areas are provided in Appendix B. The K -factor approximates soil detachment due to runoff and raindrop impact. Lower k -Factor values (0.1 - 0.17) indicate less susceptibility to sheet and rill erosion, while higher k -Factor values (>0.30) indicate greater susceptibility to erosion. The Hydrologic Group describes soil and soil units with the potential for runoff under similar storm and cover conditions. Group A has a high infiltration rate and a corresponding lower potential for runoff, while Group D has low infiltration rates due to finer soil texture or a high water table, giving them a high potential for runoff. The average annual precipitation for Cascade Creek is approximately 25 to 30 inches (Western Regional Climate Center map - http://www.wrcc.dri.edu/pcpn/co.gif). Table 1-1 shows the soils data and erosion potential for each major soil within the areas that will undergo construction. OXY USA WTP LP 5 Olsson Associates Cascade Creek SWMP Table 1-1 Soils Data and Erosion Potential Representative Value Soil Name Hydrologic Group K -factor % Sand % Silt % Clay Biedsaw-Sunup gravelly loams Biedsaw C 0.37 39.2 37.3 23.5 Sunup D 0.37 39.8 37.7 22.5 Debeque very channery loam Debeque ' B 0.28 42.1 37.9 ' 20 Grobutte very channery loam Grobutte B 0.28 38.5 36.5 25 Happle very channery sandy loam Happle B 0.28 65.1 18.9 16 Happle-Rock outcrop association Happle B 0.28 65.1 18.9 16 Rock Outcrop D - - - - Northwater loam Northwater B 0.2 39.2 37.3 23.5 Northwater-Adel complex Northwater B 0.2 43 38.5 18.5 Adel B 0.15 35.4 33.6 31 Parachute-Irigul complex Parachute B 0.2 42.1 37.9 20 Irigul D 0.28 39.8 37.7 22.5 Parachute-Irigul-Rhone association Parachute B 0.2 42.1 37.9 20 Irigul D 0.28 39.8 37.7 22.5 Rhone B 0.2 39.2 37.3 23.5 Parachute -Rhone roams Parachute B 0.2 42.1 37.9 20 Rhone B 0.2 39.2 37.3 23.5 Silas loam Silas B 0.2 39.2 37.3 23.5 Tosca channery loam Tosca B 0.28 44.3 40.7 15 Utso-Rock outcrop complex Utso B 0.28 44.3 40.7 15 Rock Outcrop D - - - - 1.E Vegetation Description and Estimate Existing vegetation surrounding the areas of disturbance includes but is not limited to: grasses, sagebrush, aspen, serviceberry, and scrub oak. Percent ground cover ranges from 50 to 90 percent. Specific existing vegetation descriptions and percents ground cover for each site are listed in Table 1. OXY USA WTP LP Cascade Creek SWMP 6 Olsson Associates 1.F Potential Pollution Sources and Locations The potential pollution sources for each phase of construction are discussed in Sections 1.B Sequence of Construction Activities and 3.B Potential Pollutant Sources. The locations of the potential pollution sources are shown on the site maps. 1.G Non-Stormwater Discharges Non-stormwater discharges are not expected from the construction project. 1.H Receiving Waters Oxy's Cascade Creek area lies within the Colorado River watershed. The majority of the project site drains to the southwest via numerous named and unnamed tributaries of Roan Creek. The north and east edges of the project site drain to numerous named and unnamed tributaries of Parachute Creek. Roan Creek and Parachute Creek terminate at the Colorado River. Mount Callahan Road, which is the eastern portion of the Oxy's Logan Wash area, drains partly to unnamed tributaries of Smith Gulch and Kelly Gulch, which are direct tributaries of the Colorado River. For more detail, refer to Figure 1, the overview map and/or to the individual site maps. 2. SITE MANS) The site maps for Cascade Creek will be maintained within Oxy's stormwater database. The maps will be regularly updated to reflect all changes to the sites, and additional maps will be created in response to planned field activities. An example site map is included in Appendix C. 2. A Construction Site Boundaries For an accurate representation of the construction site boundaries, refer to the site maps. 2. B Areas of Ground Disturbance For an accurate representation of the areas of ground disturbance, refer to the site maps. 2. C Areas of Cut and Fill For an accurate representation of the areas of cut and fill, refer to the site maps. 2. D Storage Areas For an accurate representation of the storage areas, refer to the site maps. 2. E Location of Asphalt and Concrete Batch Plants Asphalt or concrete batch plants are not anticipated within the project site, but, if used, will be included on the site maps. 2. F Locations of Structural BMPs For an accurate representation of the location of structural BMPs, refer to the site maps. 2. G Locations of Non -Structural BMPs For an accurate representation of the location of non-structural BMPs, refer to the site maps. 2. H Locations of Springs, Streams, Wetlands and Other Surface Waters For an accurate representation of the location of springs, streams, wetlands, and other surface waters, refer to the overview map, Figure 1 and/or to the site maps. OXY USA WTP LP 7 Olsson Associates Cascade Creek SWMP 3. STORMWATER MANAGEMENT CONTROLS 3.A Stormwater Administrator The SWMP Administrator for Cascade Creek is Oxy's HES Advisor. The SWMP Administrator is responsible for developing, implementing, maintaining and revising the SWMP as necessary. The administrator may delegate the SWMP inspections and maintenance of records to qualified personnel. 3.B Potential Pollutant Sources Disturbed and stored soils: The construction activities will involve soil disturbances and stockpiling. Clearing, grading, and otherwise altering previously undisturbed land can greatly increase the rate of soil erosion over pre -disturbance rates. The resulting sediment can impact the water quality of receiving streams. Vehicle tracking of sediments: Vehicles will be accessing the sites up until the Final Reclamation phase. This also has the potential to facilitate the movement of sediment off site. Management of contaminated soils: if a spill of any type were to occur, the impacted soil would become a potential stormwater pollutant. Loading and unloading operations: The sites may have tanks for the storage of fuels or production -related liquids. The presence of such tanks would require loading and unloading of the tanks. Outdoor storage activities: The construction contractor will maintain a laydown or staging area for equipment and material storage on site. Depending on the work phase of the site, chemicals and/or other drilling materials may be stored on site, and tanks used to store fuels or production - related liquids may be present. These storage activities are discussed in more detail in 1.B Sequence of Construction Activities. An inventory of down -hole chemicals used for Oxy wells is included as Table 3. Vehicle and equipment maintenance and fueling: During construction, it is possible that equipment will be maintained or fueled on site. On-site maintenance and fueling could potentially result in leaks or spills of fuel, gear oil, hydraulic oil, brake fluid, or grease. Significant dust or particulate generating processes: Construction activities and vehicle traffic to and from the sites could potentially generate dust. Routine maintenance activities: The use of fertilizers or weed killers is a possible at the sites in order to achieve successful revegetation of disturbed areas. See also "vehicle and equipment maintenance and fueling" above. On-site waste management practices: Trash receptacles will be located on site to contain construction -related or other trash or debris. Used drilling mud and water will be discharged to the reserve pit, or captured in tanks during closed-loop drilling processes. Portable toilets may be utilized on site. Concrete truck/equipment washing: Concrete truck or equipment washing is not anticipated. Dedicated asphalt and concrete batch plants: Dedicated asphalt and concrete batch plants are not anticipated. Non -industrial waste sources: All project phases involve people working on site. This can generate personal and work-related trash and debris, and may also necessitate the use of OXY USA WTP LP 8 Olsson Associates Cascade Creek SWMP portable toilets. Clearing operations may also generate waste in the form of slash (trees, brush, etc.). Other areas or procedures: No other areas or procedures where spills can occur are anticipated at this time. Spills or leaks from potential sources are described in the SPCC plan. Response to certain events may require specialized training due to health and safety concerns. The locations of potential pollutant sources are shown on the site maps. BMPs utilized to address potential pollutant sources are described in Section 3. 3.0 BMPs for Stormwater Pollution Prevention This section describes the BMPs that will be used at Cascade Creek for stormwater pollution prevention. Oxy's BMP Manual containing the BMPs which may be implemented is included in Appendix D. BMPs may be added or removed from the manual to accommodate changes in site conditions and activities at Cascade Creek. Run-on protection and run-off controls will be installed prior to the beginning of construction activities, as practicable, with consideration given to worker safety and site access. Additional structural and non-structural Best Management Practices (BMPs) will likely need to be installed during and following construction. 3.C.1 Structural Practices for Erosion and Sediment Control Descriptions, design and installation practices, and maintenance and removal considerations for the structural BMPs available for use can be found in the BMP Manual. The location of all structural BMPs will be found on the site maps. 3.C.2 Non -Structural Practices for Erosion and Sediment Control Descriptions, design and installation practices, and maintenance and removal considerations for the non-structural BMPs available for use can be found in the BMP manual. The location of all non-structural practices will be found on the site maps. 3.C.3 Phased BMP Installation The project will be phased to the extent practical to limit the amount of disturbed area that is exposed at any given time. BMP implementation will be coordinated with the various stages of construction. BMPs to control erosion and sediment transport will be installed prior to earth disturbing activities. If additional areas are disturbed, BMPs will be implemented prior to the start of ground disturbing activities in those areas. As portions of the site are completed and previously disturbed areas are stabilized or the BMP is no longer needed, they will be removed. Permanent or temporary erosion control measures for all slopes, channels, ditches, disturbed land area, and soil stockpiles will be implemented as soon as practicable after final grading or the final ground disturbance has been completed. When it is not possible to permanently stabilize a disturbed area after a disturbance has been completed or where significant ground disturbance activity ceases, temporary erosion control measures will be implemented as soon as practicable. Table 3-1 below outlines the BMPs to be implemented during each phase of the project. OXY USA WTP LP 9 Olsson Associates Cascade Creek SWMP Table 3-1 BMP Phasing Project Phase BMPs to be implemented during each phase Pre-Disturbance/Site Preparation • Prepare stabilized staging area. • Install vehicle tracking pad, geotextile, or mud mats where applicable to provide designated access into the ROW. • Installation of perimeter control BMPs • Limit access to areas that are not to be disturbed protecting the existing vegetation. Construction • Locate stockpiles in work areas with perimeter BMPs. • Install BMPs per details in the BMP manual. • Leave disturbed area of site in a surface roughened condition when feasible. • Protect, inspect and repair BMPs as necessary. Post -construction • Maintenance and repair of BMPs installed during previous phases. • Stabilize surface with gravel when feasible • Inspection of BMPs Final Stabilization • Perform seeding and mulching or the installation of erosion control blankets where applicable. • Remove all non -biodegradable temporary BMPs when applicable. 3.C.4 Materials Handling and Spill Prevention Spills or leaks from potential pollution sources will be handled as described in Oxy's SPCC plan. Petroleum Product Management Pollutants from petroleum products used during construction activities adhere easily to soil particles and other surfaces. In the case of a spill or leak, soils contaminated with petroleum products will be contained, and remediated onsite or removed to a proper disposal site. Use of secondary containment will reduce the risk of spills or leaks contacting the ground, including during loading and unloading operations. The use of drip pans will reduce the likelihood of spills or leaks contacting the ground during vehicle or equipment maintenance or fueling. Proposed soil erosion and sediment control practices will also aid in the retention of spills or leaks. Proposed maintenance and safe storage practices will reduce the chance of petroleum products contaminating the site. Oily wastes such as crankcase oil, cans, rags, and paper containing oils will be placed in proper receptacles and disposed of or recycled. Routine daily inspections will be conducted to identify leaks form equipment and vehicles and if needed corrective actions will be implemented. The following guidelines for storing and managing petroleum products will be implemented: • All product containers will be clearly labeled OXY USA WTP LP 10 Olsson Associates Cascade Creek SWMP Drums (if present) will be kept off the ground, within secondary containment. Lids for drummed materials will be securely fastened. • Fuel tanks will be stored within secondary containment • Emergency spill response procedures will be available on site. Persons trained in handling spills will be on call at all times • Spill response equipment and 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. Contractors and subcontractors should be reminded about proper storage, handling and transferring of petroleum products or other hazardous materials during safety meetings. Other Material/Chemical Product Management Any other chemicals or materials stored on site that could contribute pollutants to runoff will be kept off the ground, and stored in original packaging and/or otherwise covered, to ensure that the material does not interact with stormwater. Storage or Iaydown areas will be maintained with good housekeeping, and regularly inspected for spills, leaks, and the potential of materials commingling with stormwater. Any minor spills or leaks will be cleaned up immediately. Spill Response All spills and releases of exploration and production waste or produced fluid exceeding 5 barrels (210 gallons) including those contained within unlined berms, shall be reported in writing on the COGCC Spill/Release Report Form 19 within 10 days of discovery of the spill. All spills/releases that exceed 20 barrels (840 gallons) of exploration and production liquids/waste shall be verbally reported to the COGCC at (303) 894-2100 within 24 hours of discovery. Spills or releases of any size that impact or threaten to impact any waters of the state, residence or occupied structure, livestock or public byway, shall be verbally reported to the COGCC as soon as practical after discovery (COGCC Rule 906). If the spill may potentially reach waters of the state (which includes surface water, ground water and dry gullies or storm sewers leading to surface water), it must also be reported immediately to the CDPHE at 1-877-518-5608. Spills or releases of more than 25 gallons of refined petroleum crude oil products such as gasoline, diesel fuel, oil, or derivatives of mineral, animal or vegetable oil shall be reported to the CDPHE at 1-877-518-5608, within 24 hours. A hazardous substance release in any amount which enters or threatens to enter waters of the state shall be reported to the CDPHE. 3.C.5 Dedicated Asphalt or Concrete Batch Plants Dedicated asphalt or concrete batch plants are not anticipated within the project site. 3.C.6 Vehicle Tracking In order to limit vehicle tracking of sediment, vehicles will use designated entry points into construction areas. Access roads and drive paths on pads will be sloped and maintained such that stormwater exits quickly, limiting the potential for excessive mud and rutting. Stabilization OXY USA WTP LP Cascade Creek SWMP 11 Olsson Associates methods, such as road base and chemical stabilizers and stabilized construction entrances will be used where practicable. The location of vehicle tracking controls will be shown on the site map. 3.C.7 Waste Management and Disposal, Concrete Washout, and Contaminated Soils Waste Management and Disposal Construction -related and other trash will be collected in covered containers and hauled off-site for disposal in suitable landfills. Used drilling water and mud will be remediated or disposed of in accordance with COGCC rules. Portable toilets may be used to contain sanitary waste, with waste materials regularly pumped and transported off-site for disposal at approved facilities. If portable toilets are used, they will be staked or weighted to prevent tipping. Any slash from clearing activities will, if possible, be chipped and used on site for mulch, or utilized as a brush barrier at the site perimeter. The locations of any waste containments on site are shown on the site maps. Concrete Washout Concrete washout is not anticipated within the project site. 3.C.8 Ground Water and Stormwater Dewatering No groundwater dewatering is anticipated at this time. If groundwater is encountered, the dewatering of the site will be regulated by a dewatering permit issued through CDPHE. All stormwater will be diverted by berms and/or diversion ditches to avoid contact with the groundwater. If the need for stormwater dewatering is encountered, appropriate erosion and sediment control BMPs, as described in the BMP manual, will be utilized to minimize erosion and trap sediment. 4. FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT A site is considered finally stabilized when all ground surface disturbing activities at the site have been completed, and all disturbed areas have been either built on, compacted, covered, paved, or otherwise stabilized in such a way as to minimize erosion to the extent practicable, or a uniform vegetative cover has been established that reflects a total percent plant cover of at least seventy percent (70%) of pre -disturbance levels or reference areas. The approved seed mix and application rates for Cascade Creek are presented in Table 2. Specific BMPs for soil preparation and amendment, soil stabilization, and sediment control during final stabilization will be chosen on a site by site basis, based on soil condition and slope. The BMPs chosen will be shown on the individual site maps. Sites are considered finally stabilized once site preparation and interim reclamation (COGCC Rule 1003) are complete and the above stabilization criteria have been met, even though the site will be disturbed again in the future for final reclamation. Once stabilized, the site will be removed from this SWMP for sediment controls. However, if petroleum hydrocarbons or other chemicals affect stormwater as a result of industrial activities on-site, the site will maintain permit coverage. Permanent BMPs may be left in place if it is deemed necessary to maintain site stability. OXY USA WTP LP 12 Olsson Associates Cascade Creek SWMP 5. INSPECTIONS AND MAINTENANCE PROCEDURES Site inspections will be conducted with the requirements and minimum schedule as outlined in Part I.D.6 of the CDPS general permit (COR -030000). The requirements are as follows: • All active construction sites will be inspected at a minimum of at least once every 14 calendar days, and within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. • If a site is considered temporarily idle, that is, no construction activities will occur following a storm event, than a post -storm inspection will be conducted prior to re- commencing constructing activities, but no later than 72 hours following the storm event. Routine inspections must still be conducted at least every 14 calendar days. For sites or portions of sites in which all construction activities that will result in ground disturbance are completed, and all activities for final stabilization, as outlined above in section 4, with the exception of vegetative coverage are completed, inspections will be conducted at least once every month, and post -storm inspections are not required. • Inspections are not required at sites where snow cover exists over the entire site for an extended period of time as long as melting conditions do not exist. The following information must be documented in the inspection record for the use of this exclusion: dates when snow cover occurred, date when construction activities ceased, and date melting conditions began. A trained and qualified person familiar with the SWMP and stormwater controls will conduct all inspections. The scope of the inspection will cover the construction site perimeter, all disturbed areas, material and/or waste storage areas that are exposed to precipitation, discharge locations, and locations where vehicles access the site. These areas will be inspected for evidence of, or the potential for, pollutants leaving the construction site boundaries entering the stormwater drainage system, or discharging to waters of the state. Also, all erosion and sediment control practices identified in this SWMP will be evaluated to ensure that they are maintained and operating correctly. Personnel performing site inspections will record the information as outlined below on the inspection report. This inspection report will identify any incidents of non-compliance with the terms and conditions of the general permit. The inspection report will include: i. The inspection date ii. Name(s) and title(s) of personnel making the inspection iii. Location(s) of discharges of sediment or other pollutants from the site iv. Location(s) of BMPs that need to be maintained v. Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular location vi. Location(s) where additional BMPs are needed that were not in place at the time of inspection vii. Deviations from the minimum inspection schedule as outlined above viii. Description of corrective action for items iii, iv, v, and vi, above, dates corrective action(s) taken, and measures taken to prevent future violations, including requisite changes to the SWMP, as necessary OXY USA WTP LP 13 Olsson Associates Cascade Creek SWMP ix. After adequate corrective action(s) have been taken, or where a report does not identify any incidents requiring corrective action(s), the report shall contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. If deficiencies or maintenance issues are noted on the inspection form, or additional BMPs are needed, then the Stormwater Administrator for Oxy will be contacted and they will direct a subcontractor to perform the proper actions. BMPs that have failed, or have the potential to fail without maintenance or modification, will be addressed as soon as possible, immediately in many cases, to prevent the discharge of pollutants. All BMPs will be adequately maintained in accordance with good engineering, hydrologic and pollution control practices, including removal of collected sediment outside the acceptable tolerances of the BMPs. All inspection records will be kept and maintained in Oxy's stormwater database for a minimum of three years from expiration or inactivation of permit coverage. An example report is included in Appendix C. OXY USA WTP LP 14 Olsson Associates Cascade Creek SWMP Tables Figures Appendix A Certification, General Permit, and Related Documents Site Termination Forms Appendix B NRCS Soil Unit Map Soil Descriptions Appendix C Inspection Report Form Example Site Map Appendix D BMP Manual Appendix E BLM Gold Book, Chapters 4 and 6 STATE OF COLORADO John W, Hickenlooper, Governor Christopher E. Urbina, MD, MPH Executive Director and Chief Medical Officer Dedicated to protecting and Improving the health and environment of the people of Colorado 4300 Cherry Creek Dr. S. Laboratory Services Division Denver, Colorado 80246-1530 8100 Lowry Blvd. Phone (303) 692-2000 Denver, Colorado 80230-6928 Located in Glendale, Colorado (303) 692-3090 http://www.cdphe.state,co.us June 21, 2012 Doug Weaver, Ops Mgr & Attorney -in -Fact Oxy USA WTP LP 760 Horizon Dr Ste 101 Grand Junction, CO 81506 Colorado Department of Public Health and Environment RE: Renewal of Permit/Certification Administrative Continuation For: Cascade Creek Common Plan of Development Located at: 13 Mi N of Debeque (See map in file), Debeque, Garfield County Permit No.: COR038414 Dear Mr. Weaver; The Division has received an application to renew the above permit/certification. It has been determined that there is sufficient information to make this permit/certification eligible for renewal. More information may be requested by the Division as progress is made in developing a new permit/certification for the above listed facility. This information must be made available to the Division when requested to complete the permit process. The Division is currently in the process of developing a new permit or master general permit and associated certification for the above permitted facility. The development and review procedures required by law have not yet been completed. When the discharge permit issued to you for your facility expired on June 30, 2012 your permit is administratively continued and remains in effect under Section 104(7) of the Administrative Procedures Act, C.R.S. 1973, 24-4-101, et seg (1982 rept. vol. 10) until the new permit/certification is issued and effective. All effluent permit terms and conditions in your current permit will remain in effect until your new permit/certification is issued and effective. PLEASE KEEP THIS LETTER WITH YOUR PERMIT AND SWMP TO SHOW CONTINUATION OF PERMIT COVERAGE. Sincerely, Debbie Jessop Permits Section WATER QUALITY CONTROL DIVISION xc: Permit File i STATE OF COLOPADO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT WATER QUALITY CONTROL DIVISION TELEPHONE; (303) 692-3500 CERTIFICATION TO DISCHARGE UNDER CDPS GENERAL PERMIT COR -030000 STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION Certification Number COR038414 This Certification to Discharge specifically authorizes: Oxy USA WTP LP LEGAL CONTACT: Heidi Reed, Sr. EHS Advisor Oxy USA WTP LP 2754 Compass Drive Ste. 170 Grand Junction, CO 81506 Phone # 970/263-3609 ffrey@cordcomp.com LOCAL CONTACT: Joanna Fry„ Phone # 970/263-7800 heidi reed@oxy.com During the Construction Activity: Gas/Oil Field Exploration and/or Development to discharge stormwater from the facility identified as Cascade Creek dit Development which is located at: 13 miles north of Debeque, map in file Debeque, Co 81630 Latitude 39/30/45, Longitude 108/14/10 In Garfield County to: Cascade Creek -- Colorado River Anticipated Activity begins 07/01/2005 continuing through 05/17/2007 On 5 acres (5 acres disturbed) Certification is effective: 07/01/2007 Certification Expires: 06/30/2012 Annual Fee: $245.00 (DO NOT PAY NOW — A prorated bill will be sent shortly.) Page 1 of 22 OXY USA WTP LP Pond 10 Impact Analysis Tab Table of Contents 1. Impact Analysis Narrative 2. List of Adjacent Parcel Owners 3. Adjacent Parcel Owners Map 4. Mineral Rights Owners 5. Parcel Deed 6. Savage SUA 7. Special Warranty Deed 8. Savage DOJO SOA 9. Tract Locations Figure 10. Biological Survey 11. Sensitive Wildlife Habit Figure 12. Weed Management and Reclamation Plan 13. Non -Tributary Water 14. CDPHE Air Permit Exemption Document for Generator 15. Noise Analysis Report 16. Natural and Geologic Hazardous Report 17. Rockslide and Landslide Assessment 18. Traffic Analysis Report 19. Route Map 20. Basic Access Map 21. Road Management Plan 22. Access Road Figure 23. Site Photos Impact Analysis Tab — Table of Contents Garfield County Limited Impact Review, 2014 Impact Analysis Narrative Section 4-203 (G) TABLE OF CONTENTS OXY USA WTP LP Pond 10 1.0 Introduction The following section addresses the requirements for the Impact Analysis under Section 4-203 of the Garfield County Land Use and Development Code (LUDC). 2.0 Required Exhibits The Impact Analysis shall provide a description of the impacts that this proposed Iand use change may cause, based upon the standards that the proposed use must satisfy. This section includes exhibits and descriptions of how OXY USA WTP LP (OXY) will ensure that impacts will be mitigated and standards will be satisfied. 2.1 Adjacent Property Landowners An address list of real property adjacent to parcel 2169-214-00-026, the mailing address for each of the property owners and the appropriate portion of a Garfield County Assessor's Map showing the project site location and all public and private landowners adjacent to the subject parcel are provided in the Impact Analysis Tab. Also, in accordance with Garfield County's §24-65.5-101, a copy of the mineral interest owner of the subject property is located in the Impact Analysis Tab. OXY USA is the sole mineral owner for the subject parcel. 2.2 Adjacent Land Use Existing use of adjacent property and neighboring properties are natural resources extraction, public lands, and agricultural. Adjacent parcels are zoned resource lands or public lands. No additional impact would occur to the abutting property owners from the construction and/or operation of the Pond 10. The proposed site is located on a 7732 acre parcel. 2.3 Site Features There are no streams, areas subject to flooding, high ground water areas, and lakes within the perimeter of the site. Conn Creek is located 300 feet west of the proposed site location. Ditches exist outside the perimeter of the site and will not be impacted by the development of the site. The Surface Water figure is located in the Grading and Drainage Plan tab. Groundwater is expected to be 40 feet below ground surface based on area water well records from the Colorado Division of Water Resources for nearby wells. Three monitoring wells will be installed to monitor groundwater. The location of the monitoring wells and sampling plan will be determined by the COGCC once the Form 28 is approved. A figure showing possible monitoring wells locations is provided in the Grading and Drainage Plan tab. A retention pond and sediment traps will be constructed at the site for Stormwater controls. 95% of the site was previously graded and the site was designed to minimize impacts. Grading plans are located in the Grading and Drainage Plan tab. The area consists of grasslands and sagebrush vegetation. The project area is mostly disturbed and no evidence of use by wildlife was observed. The Environmental Impact Assessment can be located in the Impact Analysis tab. Descriptions of existing flora and fauna habitat, and migration routes present in the vicinity of the project site can be found in the report. Impact Analysis Narrative Garfield County Limited Impact Land Use Application, 2014 Page 1 of 4 OXY USA WTP LP Pond 10 Climate of the area is arid with an average annual precipitation of 11.58 inches according to the Western Regional Climate Center. Site photos are provided in the Impact Analysis Tab. 2.4 Soil Characteristics The proposed site is underlain by soils mapped by the U.S. Natural Resources Conservation Service as the Happle very channery sandy loam, which is a deep, well -drained soil found on alluvial fans occupying 3 percent to 12 percent slopes, at elevations of 5,200 to 6,000 feet. It is formed in alluvium derived dominantly from the Tertiary Green River Formation. The surface layer is typically light gray very channery sandy loam in the upper 7 inches and grades into a very pale brown. Permeability is moderate, and the available water capacity is low in the Happle soil. The effective rooting depth is 60 inches or more. Soil details and maps are located in the Natural and Geologic Hazard Report, provided in the Impact Analysis tab. 2.5 Geology and Hazard The bedrock underlying the proposed Site is composed of the lower part of the Green River Formation. These units are composed of claystone, siltstone, shale, and marlstone. Geologic hazards were identified outside the perimeter of the Oxy Pond 10 Site. These include steep slopes and potential landslides, debris flow, and rock fall. The site has been designed to mitigate these potential hazards. Berms are located on the eastern perimeter of the site. The Geologic Hazard report is located in the Impact Analysis tab. The Grading and Drainage Plan is located in the Grading and Drainage Plan tab. Photos and constructed mitigation features are detailed in the Rockslide and Landslide Assessment prepared by Jon Hilton, Oxy Operations Engineer, located in the Impact Analysis tab. 2.6 Groundwater and Aquifer Recharge Areas The 100 -year floodplain boundaries are well outside the immediate vicinity of the Pond 10 site. Floodplain and flood fringe delineations are depicted in the Floodplain Figure located in the Grading and Drainage tab. OXY has prepared and utilizes the state approved Cascade Creek Stormwater Management Plan (SWMP). Implementation of the SWMP ensures that activities comply with stormwater management as required by Garfield County, the State of Colorado, and the EPA. Implementation of the plan also mitigates the potential for OXY to pollute surface runoff, stream flow, or groundwater. The Cascade Creek Development Stormwater Plan, Permit, and extension letter are provided in the Grading and Drainage tab. Three monitoring wells will be installed to monitor groundwater. The location of the monitoring wells and sampling plan will be determined by the COGCC upon Form 28 approval. Approved form 28 will be provided to Garfield County. A figure showing possible monitoring well locations is provided in the Grading and Drainage Plan tab. 2.7 Environmental Effects Determination of the existing environmental conditions on the parcel to be developed and the effects of development on those conditions, including: a. Determination of the long-term and short-term effect on flora and fauna; b. Determination of the effect on designated environmental resources, including critical Wildlife Habitat; Impact Analysis Narrative Garfield County Limited Impact Land Use Application, 2014 Page 2 of 4 OXY USA WTP LP Pond 10 c. Impacts on Wildlife and domestic animals through creation of hazardous attractions, alteration of existing native vegetation, blockade of migration routes, use patterns, or other disruptions; Oxy contracted ERO Resources Corporation (ERO) to prepare an Environmental Impact Assessment for the Pond 10 site. The assessment determined the location of the water impoundment site will not cause significant disturbance to flora or fauna since majority of the site location has been previously graded. The proposed site location will be constructed on previously disturbed ground and is located within an area of similar development. The Environmental Impact Assessment, prepared by ERO, can be located in the Impact Analysis tab. Descriptions of existing flora and fauna habitat, wildlife and migration routes present in the vicinity of the project site can be found in the report. d. Evaluation of any potential radiation hazard that may have been identified by the State or County Health Departments; and No potential radiation hazard has been identified by the state or County Health Department. 2.8 Nuisance Nuisance from noise, lighting, and dust is not anticipated. No lighting or utilities will be installed at the proposed site. Temporary lighting will be used during completions activities, approximately 5 days. All temporary lighting will be directed inward, towards the interior of the proposed site. All lighting will adhere to the Lighting Standards stated in Article 7 of the Garfield County LUDC. A natural gas powered generator will provide electricity to the site. The generator will be located within a sound minimizing building. The generator engineering design is located in the Maps and Plans tab. A Noise Analysis was conducted for the site and determined the noise created by the operation of the generator is in compliance with the applicable COGCC standards. Per COGCC Rule 802.c.(1), noise measurements shall be measured at 350 feet or the property line, whichever is greater. Therefore, the expected noise levels were analyzed at 570 feet (nearest property boundary) from the generator. Noise levels were calculated to be within the permissible level. The Noise Analysis is provided in the Impact Analysis tab. A building permit will be submitted to the Garfield County Building Department in tandem with the subject Limited Impact Review application. An air permit exemption was issued by the Colorado Department of Public Health and Environment (CDPHE) for the natural gas generator. The exemption is valid through June 2016. The CDPHE exemption letter is located in the Impact Analysis tab. OXY assessed and determined the proposed Pond 10 does not qualify for an Air Quality permit. OXY conducted quarterly sampling of the previous ponds and analytical results concluded the hydrocarbons were less than 1%. Pond 10 operations are not considered commercial facilities since Oxy will be the sole user of the pond. The proposed pond qualifies for the CDPHE Reg 3, II.D.1.uuu exemption, which states: Surface water storage impoundment of non -potable water and storm water evaporation ponds, with the exceptions of oil and gas production water impoundments (including produced water tanks) Impact Analysis Narrative Garfield County Limited Impact Land Use Application, 2014 Page 3 of 4 OXY USA WTP LP Pond 10 containing equal to or more than one percent by volume crude oil on an annual average and commercial facilities that accept oil and gas production wastewater for processing. Oxy will continue to perform quarterly sampling of Pond 10 to monitor compliance with the CDPHE Air Permit exemption. The site will be accessed by a private lease road currently owned and maintained by OXY. The site is located on a 7732 acre parcel, surrounding by public land and other resource lands parcels. The construction phase will be approximately 13 weeks. Average daily traffic during this construction period will be eight vehicles. Approximately 5 percent of these vehicles will consist of large trucks. The traffic report, located in the Impact Analysis tab, determined that the increase in traffic is negligible and no significant improvements to the county roads are warranted. The site will generate 4-14 vehicles on average per daily, 33% of vehicles are classified as trucks. 2.9 Hours of Operation The Pond 10 will not have personnel staffed at the site on a regular continuous basis. During completions activities, personnel will access and operate the facility full time until completion activities are finalized. The anticipated completion activities take approximately 5 days to complete. Completion activities occur and are not a daily event at the site. The proposed storage areas will not be manned on a continuous basis with personnel only being present during unloading and loading of equipment and supplies. Access to the site will be infrequent, but allow access full time to accommodate other facilities. The site is not located in close proximity to any residences and is located in and adjacent to the Resource Lands zone district. Adjacent land uses include natural resource activities and public lands. Impact Analysis Narrative Garfield County Limited Impact Land Use Application, 2014 Page 4 of 4 OXY USA WTP LP Pond 10 Adjacent Landowners for Parcel # 2169-214-00-026 Parcel 213725300007 Chevron USA, Inc. ATTN: CHEVRON TEXACO PROPERTY TAX PO BOX 285 HOUSTON, TX, 77001 Zone District: Resource Lands Parcel 213736200952 Parcel 216904100951 Parcel 241311200951 Parcel 241108200954 Parcel 241108100953 Bureau of Land Management COLORADO RIVER VALLEY FIELD OFFICE 2300 RIVER FRONTAGE ROAD SILT, CO, 81652 Zone District: Public Lands Parcel 216904400003 OXY USA WTP LP 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX, 77046-0506 Zone District: Resource Lands Parcel 241108200011 JOJO PROPERTIES LLC PO BOX 1926 RIFLE, CO, 81650 Zone District: Resource Lands Parcel 216910100020 JOJO PROPERTIES LLC PO BOX 1926 RIFLE, CO, 81650 KOEHLER, DONNA J PO BOX 300 DEBEQUE, CO, 81630 OXY USA INC PROP TAX DEPARTMENT PO BOX 27570 HOUSTON, TX, 77227-7570 Zone District: Resource Lands Adjacent Landowners Parcel 2169-214-00-026 Garfield County Limited Impact Review, 2014 Page 1 of 2 OXY USA WTP LP Pond 10 Parcel 216911400011 PETROLEUM DEVELOPMENT CORP 1775 SHERMAN STREET SUITE 3000, DENVER, CO, 80203 Zone District: Resource Lands Parcel 216914100022 JOJO PROPERTIES LLC PO BOX 1926 RIFLE, CO, 81650 PRATHER, RICHARD L, LYLE & NED PO BOX 165 DE BEQUE, CO, 81630-0165 KOEHLER, DONNA J PO BOX 300 DEBEQUE, CO, 81630 Zone District: Resource Lands Parcel 216927200017 #15 ENTERPRISES LLC 1218 WEBSTER STREET HOUSTON, TX, 77002 Zone District: Resource Lands Parcel 241101300001 Parcel 241104100002 PUCKETT LAND COMPANY 5460 S QUEBEC STREET, SUITE 25 GREENWOOD VILLAGE, CO, 80111-1917 Zone District: Resource Lands Parcel 241108200019 Parcel 241108200012 SAVAGE LIMITED PARTNERSHIP 1 &ANDERSON PO BOX 1926 RIFLE, CO, 81650-1926 Zone District: Resource Lands Parcel 216736200023 SHELL FRONTIER OIL & GAS INC SHELL OIL COMPANY PO BOX 4854 HOUSTON, TX, 77010 Zone District: Resource Lands Adjacent Landowners Parcel 2169-214-00-026 Garfield County Limited Impact Review, 2014 Page 2 of 2 / OXY USA WTP LP OXY 760 Horizon Drive, Suite 101 116.00/ Grand Junction, CO 81506 213736200952 CHEVRON USA INC 213725300007 Pond 10 Adjacent Parcels Revised: 4/2/2014 Garfield County, Colorado 0 0.75 1.5 2.25 3 3.75 Miles J SHELL FRONTIER.OIL & GAS INC 2167336200023 CHEVRONLUSAINC 213725300007 216904100951 6S 97 JOJQ?ROPERTIES LLC 216910100020 PDC 216911400011 JO J O{PROPERTIES LLC 216914100022 SHELL ER, ONTIER-OIL & GAS INC 21673620023 #15 ENTERPRISES LLC 216927200017 J0J9L,PROXEREIES LLC 241108200011 o y s i s c aunts' r Pond 10 Enlarged Below 241311200951 { tong Point 241108200954 OXY USA INC Bloat .Lurch )xy Responsible Road Public Road 1101 Subject Parcel AjacenParcel 4JOJO PROPERTIES LL`Cj2.11108200011 • SAVAGE LIMITED PARTNERSHIP,I & ANDERSON; GEORGE M REVOCABLE TRUST241108200018! OXY USA WTP LP Pond 10 Mineral Owners for Parcel # 2169-214-00-026 OXY USA WTP LP 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX, 77046-0506 Mineral Owners for Parcel 2169-214-00-026 Garfield County Limited Impact Review, 2014 Page 1 of 1 Nf fIRNi~ ill MwgUleraFfW Yd 11111 i of t G i l t Gee F. DOS Imw mum co DEED This Deed ("Deed'), dated effective as of January 1, 2001 is between OXY USA Inc., a Delaware corporation, whose address Is 5 Greenway Plaza, Suite 110, Houston, Texas 77046-0504 ("Grantor') and OXY USA WTP LP, a Delaware limited partnership, 5 Greenway Plaza, Suite 110, Houston, Texes 77046.0506, ('Grantee"). WHEREAS, by that certain Assignment, Conveyance and Bill of Sale effective as of January 1, 2001, recorded in Book 1235 at Page 192 of the records of Garfield County. Colorado ('Assignment'). Grantor Intended to assign and convey certain personal and real property to Grantee; and WHEREAS, by this instrument, Grantor desires to clarify Its Intention to convey and deed the real property described in gxhibit A attached hereto to Grantee. NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which were acknowledged by Grantee in the Assignment, Grantor does hereby sell, assign, transfer, convey, deed and set over unto Grantee, and rte successors and assigns, ail of Grantofe rights, title and Interests in and to the following, collectively referred to in this Deed as the "Real Property'. All of Grantors right, title and interest In and to the Real Property described in Exhibit A including, but not limited to, allot Grantor's right, title and Interest In: (I) any oil, gas, and/or other minerals; (Ii) any surface and subsurface water and water rights belonging to, utilized for, or appurtenant to the Real Property, whether adjudicated or not adjudicated; (Ili) eurface and subsurface sand and gravel; (iv) rights-of-way, easements, road use agreements, rights of access, surface agreements, servitudes and similar Interests acquired or used In connection with the surface end subsurface of the Real Property; (v) timber, (vi) any contracts affecting the Real Property; (vii) any permits, authorizations, and licenses of any nature owned, held or operated in connection with the surface and mineral estate of the Real Property, and (viil) all rights and privileges appurtenant to the Real Property, regardless of whether those rights and privileges appurtenant to Real Property are specifically identified herein. It is the Intent of the Grantor to sell, assign, transfer and convey, and Grantee to accept and acquire, all of the Grantor's right, title and Interest In the Real Property. TO HAVE AND TO HOLD the Real Property, with all its appurtenances, unto Grantee, Its successors and assigns. forever, subject to the following terms, covenants and conditions: 1. No Warranty. This conveyance is made by Grantor and accepted by Grantee without any warranty whatsoever and without warranty of tile, either express or implied. This conveyance Is made with full substitution and 11 FAMMILIPIrWI LIE1PO1 MiIhhUIII Ruc. OnI 781 1p9� Iarte;*Cee 0 t1 00 tel Akerr�a7 __1R0 COUNTY CO of eb nib 000 F.. 0. GWIf subrogation of Grantee in and to all covenants and warranties heretofore made or given by others. 2. Successors ar}d Assigns. The terms and conditions of this Deed shall extend to and be binding upon the successors of, or assigns of the respective parties hereto, and shati be covenants that run with tha land, 3. Further Assurances. Grantor and Grantee agree to execute and deliver from time to time such further Instruments and do such other acts as may be reasonably necessary to effectuate the Intents and purposes of this Deed. 4. Govemina Law. This Deed is governed by and must be construed In accordance with the laws of the State of Colorado excluding any conflicts-of- law onflicts-oflaw rule or principle that might apply the law of another Jurisdiction. IN WITNESS WHEREOF, Grantor has executed this Deed on the date of the acknowledgment contained herein, but effective as of January 1, 200t. OXY USA Inc. By: Name: /11441_3ckwtgt Title: iM -fit-13L4 STATE OF TEXAS COUNTY OF HARRIS ) )se The foregoing Deed was executed before me on this 4 day of December, 2008, by Alan Schwartz, Attorneyin-Fact of OXY USA Inc., a Delaware Corporation, Grantor. WITNESS my hand and official seal. My commission expires: 41--413-iota g 4146f:14 otary Public 1 Os P111F �l�9i��,I�1itliY'W.I1 N' 11 KENO k�1 BPI 7 o. 1' Vi'w WI.00 poo iahetwitID COmi„0 a Mg; F �I ti�p{r�IlY/1@�lfl�k�L�rg 1��4r1�b#.� pl�atiritiV J II II R D,o�o ii 6.04 6ANFIt1A comy CO { p 1 Rio •a; i I! ; i i 0f+ 4 O w .e J11 1ii Lli II i il gi ail Na Eil 0s li h h 11 1. iii 81 81 81 8 6 s 1 6 g g g i P q til 11 11 i ii ill 1,1 1 1 1 1 1! 1 1mirdia 1lI�I�h�liknaht��I'i�41 fP1461411111 Raa t1ozil 7a9939 L7l? �0�0 0}� 41 PN H.r� Al6arlee a 0o FN: 6d 0D Doo iosiO.00 PRC1ELO GOIHTY C0 ZS viv,���-2-2 SLe-r, . d Na letttttttt Niitttt 11 8� Nt 8 } 11111 /11711�7�1'Xpilli�1�il11�r 1 111011 1 H sa?fungi 69939 1711 !i 0�11•as PK DoJc Fcu��:Altrtfo of li m N:3S4.94 io6PRF[ELO co.„ W I i ii 1 1 li ilagli g Iiipil lin i ii IiidiIli tliiso 4 g1 Ibligiiiiiit Igjl I • Q - o v 11 gi 85 Limumumminiqg 111111QQ1I01.111311E �• it1;+GSIRMIIh� ��ll.p 111iii 7�0 F''s $56 oO 0"F.:°$o0 CARFIEI.o cower CO [14 Y1 11 ale - 46 0.4 J111 1p8t nill/t ; t25,1 Np3gpig pp 0 p At! /5g1 h RI V I 1 $ 01 3a2.0e1.1 jor 7oa) 0o F.sp V0aR? CLO COUNTY CO 111 4 i gteR ,f$l 11. §le R4 NOA' 1 02. gig Pleit 1 I 8 ptip U• Die 11 1 1 RICIPMAPHAVill OWN Mil 17514111501311 ,1.111 Alb.rle ovo F:�=a.00 ma tom Y co II" �.�.�N/1Y„ MIRIF ; MIA , li blA1141 �� IIIA im :112 hi k 8# i il 1 111 MINA1141111,1111i 11 111 Rimpt MI6* _ r n yril.21111111 Args:4.48 CMCIELO Catlin CO SURFACE USE AGREEMENT THIS SURFACE USE AGREEMENT (the "Agreement"), is made and entered into as of June 1, 2006 (the 'Effective Date"), by and among Savage Limited Parinershipl, a Colorado limited partnership, 5953 County Road 320, Rifle, Colorado 81650 ("Savage LP" or "Surface Owners Representative"), Joan L. Savage, c/o Savage LP, Daniel W. Stroock, c/o Savage LP and Sue van de Bovenkamp, c/o Savage LP (each, a "Surface Owner" and together, "Surface Owners"), and Surface Owners do hereby agree to designate Savage LP as their Surface Owners Representative, and OXY USA WTP LP, P.O. Box 27757, Houston, Texas 77046-0506 ("Operator"). RECITALS WHEREAS, the property (the "Property") is located in Garfield County, Colorado and described as: Township 7 South Range 97 West 6t" PM Acres Tract 38 159.99 West 20 acres of Tract 39, Except 1.26 acres (as described in Deed at Book 144 at Page 66) 18.74 Tract 40 160.00 Tract 41 40.00 Tract 42 120,00 Tract 48 160.00 Tract 49 160.00 Being parts of Sections 5, 8, 9, 17 and 18 818.73 Garfield County, Colorado and WHEREAS, Surface Owners desire to grant Operator certain rights to use of the surface and subsurface of the Property for Operator's oil and gas exploration and production operations; and WHEREAS, subject to the terms and conditions of any oil and gas leases that affect the Property and in which Operator is a lessee, Operator proposes to (i) construct and operate one or more well sites on the Property for the purposes of drilling and producing one or more oil and gas wells to bottom hole locations on and/or off the Property and (ii) construct and/or place roads and pipelines and other structures and facilities on the surface of the Property as the Operator may deem necessary. NOW, THEREFORE, in consideration of the mutual promises and covenants set forth herein. the parties hereto agree as follows: Page 1 of 27 5/30/2006 1. SURFACE tJSE A. GRANT BY SURFACE OWNERS: Surface Owners hereby grant Operator the right to use of the surface and subsurface of the Property for Operator's oil and gas exploration and production operations. This grant by Surface Owners shall be in addition to the rights granted to Operator under any oil and gas leases it may own that affect the Property, and includes, but is not limited to (i) the right to use the surface and subsurface of the Property to drill, produce and operate one or more well sites on the Property with bottom hole locations off the Property, (ii) the right to construct and/or place roads and pipelines and other structures and facilities on the surface of the Property as the Operator may deem necessary for its operations, (iii) the right to construct buildings, treatment facilities, individual well compressors, fresh water storage and / or produced water evaporation pits on the Property to be used in connection with conventional oil and gas drilling operations, (iv) the right of ingress to and egress from the Property, and (v) the right to transport water over and across the Property. Operator's rights with respect to wells with bottom hole locations on the Property shalt be governed by Operator's oil and gas lease(s) that affect the Property, but surface operations conducted on the Property shall be subject to the provisions of Section I.B. through I.F. and Sections fl, ill and IV hereof. Attached to this Agreement as Exhibit A are the oil and gas leases owned by Operator underlying all or a portion of the Property as of the Effective Date. During the tern of this Agreement, Operator shall provide to the Surface Owners Representative any other oil and gas leases that underlie the Property that are entered into by Operator after the Effective Date. B. TERM: 1. The initial term of this Agreement shall commence as of the Effective Date and shall continue for five years (the "initial Five Year Term"). Thereafter, this Agreement shall automatically renew for one or more additional five year terms ("Additional Five Year Term") without any action on the part of either party, unless Operator elects to terminate this Agreement at the end of the Initial Five Year Term or any Additional Five Page 2 of 27 5/30!2006 Agreement to any governmental entity to the extent required by law, or to the parties' contractors, employees, attorneys and bankers, as necessary, subject to execution of a confidentiality agreement by any of Surface Owners' contractors, employees, attomeys or bankers. Y. NO RECORDING OF THIS AGREEMENT This Agreement shall not be recorded in the real estate records of Garfield County; however, upon request of any party hereto, the other parties hereto agree to execute a short form agreement, in the form attached hereto as Exhibit C, for recording. Z. DEEMED RESPONSE TO REQUEST FOR APPROVAL OR AGREEMENT Any time approval or agreement of the Surface Owners or Surface Owners Representative is required under this Agreement, if Operator does not receive a response within fifteen (15) days of providing its request for approval or agreement to the Surface Owners or Surface Owners Representative, approval or agreement shall be deemed to have been received by Operator. AA. PERMITS AND APPLICATIONS; COOPERATION Upon request by Operator, Surface Owners shall cooperate with, provide reasonable assistance to, and shall not hinder, Operator with regard to obtaining permits and filing applications in connection with Operator's operations pursuant to this Agreement IN WITNESS WHEREOF, the parties have executed this Agreement on the date set forth by their signature, but it shall be effective as of the Effective Date. SURFACE OWNERS: SAVAGE LIMITED PARTNERSHIP 1, a Colorado Limited Partnership AN L SAVA JC. O DANIEL W. STROOCK SUE VAN DE BOVENKAMP Dorm 1.11 .477 Date: Date: Date: -5—) 3 ) 0 Date: Agreement to any governmental entity to the extent required by law, or to the parties' contractors, employees, attorneys and bankers, as necessary, subject to execution of a confidentiality agreement by any of Surface Owners' contractors, employees, attorneys or bankers. V. NO RECORDING OF THIS AGREEMENT This Agreement shall not be recorded in the real estate records of Garfield County; however, upon request of any party hereto, the other parties hereto agree to execute a short form agreement, in the form attached hereto as Exhibit C, for recording. Z. DEEMED RESPONSE TO REQUEST FOR APPROVAL OR AGREEMENT Any time approval or agreement of the Surface Owners or Surface Owners Representative is required under this Agreement, if Operator does not receive a response within fifteen (15) days of providing its request for approval or agreement to the Surface Owners or Surface Owners Representative, approval or agreement shall be deemed to have been received by Operator. AA. PERMITS AND APPLICATIONS; COOPERATION Upon request by Operator, Surface Owners shall cooperate with, provide reasonable assistance to, and shall not hinder, Operator with regard to obtaining permits and filing applications in connection with Operator's operations pursuant to this Agreement. IN WITNESS WHEREOF, the parties have executed this Agreement on the date set forth by their signature, but it shall be effective as of the Effective Date. SURFACE OWNERS: SAVAGE MITED PARTNERSHIP , a Colorado Limited Partnership Of AN L. SAVAGE Date: -5-- 30 -0 Date: ,5= 30-0 Date: DANIEL W. STROOCK VA6 VCM IC dyer► Date: 6/i % Cv Page 18 of 27 5/3012006 OPERATOR: By: 1J d ti t 040 ATTORNEY-IN-FACT OXY USA WTP LP /s X30 --e* s G/1/o6 Page 19 of 27 5/30/2006 °iV Date: 6/3,1/06 ACKNOWLEDGEMENTS: STATE OF COLORADO )§ COUNTY OF GARFIELD The foregoing instrument was acknowledged before me this 31,5 day of ,cx+ r1 L . SrA, ncie, Partnershipl. WitnesJ my hand and official seal. My commission expires: STATE OF COLORADO COUNTY OF GARFIELD 2006, by as General Partner of Savage Limited The foregoing instrument was acknowledged before me this L. Savage. Witness my hand and official seal. My commission expires: STATE OF MASSACHUSETTS COUNTY OF 5 LS -day of ijk pry 2006, by Joan ) )§ ) On this day of 2006, before me, the undersigned notary public, personally appeared Daniel W. Stroock, proved to me through satisfactory evidence of identification, which were , to be the person whose name is signed on the preceding or attached document and acknowledged to me That he signed it voluntarily for its stated purpose. Witness my hand and official seal. My commission expires: STATE OF NEW YORK COUNTY OF Page 20 of 27 5/30/2006 Notary Public ACKNOWLEDGEMENTS: STATE OF COLORADO COUNTY OF GARFIELD 1 )§ The foregoing instrument was acknowledged before me this day of , 2006, by as General Partner of Savage Limited Partnershipl, Witness my hand and official seal. Notary Public My commission expires: STATE OF COLORADO ) )§ COUNTY OF GARFIELD ) The foregoing instrument was acknowledged before me this day of , 2006, by Joan L. Savage. Witness my hand and official seal. My commission expires: STATE OF MASSACfttlSE S Co WtU ) COUNTY OF f .4.t^ Notary Public ) )§ ) On this ?)111- day of iYlfx.4 j 2006, before me, the undersigned notary public, personally appeared Daniel W. Stroock, proved to me through satisfactory evidence of identification, which were triFl Dl. S t5 fIto be the person whose name is signed on the preceding or attached document acknowledged to me that he signed it voluntarily for its stated purpose. Witness my hand and official seal. My commission expires: 40-2y-?_ ..Cf1 STATE OF NEW YORK COUNTY OF Dana 7f1 .4 77 Notary Pub On thistleday of 11,►1+6- 2006, before me carne Sue Van de Bovenkamp to me known to be the individual described in and who executed the foregoing instrument, and acknowledged to me that she executed the same. Witness my hand and official seal. My commission expires: Elks( 53/20,(a STATE OF TEXAS } COUNTY OF HARRIS } § } The foregoing instrument was acknowledged before me this 4�I'c i -t .lht6 USA WTP LP, a Delaware limited partnership. Witness my hand and official seal, My commission expires; e_r_A4,7 pA)*"1. Page 21 of 27 5/30/2006 Notary Public' Bonnie Johnson Notary Public, Slate of New Tor. No. O1J06106862 Qualified In New York ComiVi Commission Expires MN 3S UM ` 14 day of 1ti1 2006, by as Attorney in Fact on behalf of OXY IAARYJ. LAAIOREA.61 MY COMMISSION EXPIRES Oecember16,? 7 EXHIBIT A [ail and Gas Leases] Page 22 of 27 5/30/2008 EXHIBIT C Recording Requested By and When Recorded Mail To: OXY USA WTP LP P. O_ Box 27757 Houston, Texas 77227.7757 Attn Colorado Landman MEMORANDUM OF SURFACE USE AGREEMENT State of Colorado County of Garfield Grantors: Savage Limited Partnership Joan L. Savage Daniel W. Stroock Sue van de Bovenkamp Grantors' Address: 5953 County Road 320 Rifle, Colorado 81650 Grantee: OXY USA WTP LP Grantee's Address: P.O. Box 277257 Houston, Texas 77046-0506 Effective Date of Agreement: For adequate consideration, Grantors, named above, have granted Grantee, named above certain rights to use the surface of the below described land located in Garfield County, Colorado for the drilling of oil and gas wells, the laying of pipelines, the building of roads, tanks and other structures associated with Grantee's oil and gas operations in accordance with the terms and conditions of the Surface Use Agreement. The following lands located in Garfield County, Colorado are subject to the Surface Use Agreement: Township 7 South Range 97 West 6t" PM Acres Tract 38 West 20 acres of Tract 39, Except 1.26 acres (as described in Deed at Book 144 at Page 66) 159.99 Tract 40 Tract 41 18.74 160.00 Tract 42 Tract 48 Page 24 of 27 5/30/2006 40.00 120.00 160.00 The Surface Use Agreement, with all of its terms and provisions, is referred to and incorporated into this Memorandum for all purposes. This Memorandum is placed of record for the purpose of giving notice of the Surface Use Agreement. IN WITNESS WHEREOF, the parties have executed this Agreement on the date set forth by their signature, but it shall be effective as of the Effective Date. SURFACE OWNERS: SAVAGE LIMITED PARTNERSHIP 1, a Colorado Limited Partnership JOAN L. SAVAGE DANIEL W. STROOCK SUE VAN DE BOVENKAMP OPERATOR: By: ATTORNEY-IN-FACT OXY USA WTP LP Page 25 of 27 5/24/2408 Date: Date: Date: Date: Date: Tract 49 160.00 Being parts of Sections 5, 8, 9, 17 and 18 818.73 Garfield County, Colorado The Surface Use Agreement, with all of its terms and provisions, is referred to and incorporated into this Memorandum for all purposes. This Memorandum is placed of record for the purpose of giving notice of the Surface Use Agreement. IN WITNESS WHEREOF, the parties have executed this Agreement on the date set forth by their signature, but it shall be effective as of the Effective Date. SURFACE OWNERS: SAVAGE LIMITED PARTNERSHIP 1, a Colorado Limited Partnership JOAN L. SAVAGE DANIEL W. STROOCK SUE VAN DE BOVENKAMP OPERATOR: By: ATTORNEY-IN-FACT OXY USA WTP LP Page 25 of 27 5/24/2408 Date: Date: Date: Date: Date: Tract 49 160.00 Being parts of Sections 5, 8, 9, 17 and 18 818.73 Garfield County, Colorado The Surface Use Agreement, with all of its terms and provisions, is referred to and incorporated into this Memorandum for all purposes. This Memorandum is placed of record for the purpose of giving notice of the Surface Use Agreement. IN WITNESS WHEREOF, the parties have executed this Agreement on the date set forth by their signature, but it shall be effective as of the Effective Date. SURFACE OWNERS: SAVAGE IMITED PARTNERSHIP 1, a C oracle Limited Partnership JAN� L. SAVAGE DANIEL W. STR OCK JE VAN' a*VENKAMP 4-Y ItP OPERATOR; By: Vice; tMittyj ATTORNEY-IN-FACT OXY USA WTP LP Page 25 '31'27 5/30/2006 Date: r -3a -4G Dale: 5--3o--0 Date: Date: � ! o b Date: -5/3%6 ACKNOWLEDGMENTS STATE OF COLORADO COUNTY OF GARFIELD The foregoing instrument was acknowledged before me this 3MJr day of .A1 A -u , 2006, by sSoa. n L . Sp./vane- as General Partner of Savage Limited Partnershipl. Witness rhand and official seal. My commission expires: A 1 1 Kid STATE OF COLORADO COUNTY OF GARFIELD Not ry p lic )§ The foregoing instrument was acknowledged before me this alar day of tM. Pry/ 2006, by Joan L. Savage. Witness my hand and official seal. I My commission expires: STATE OF MASSACHUSETTS COUNTY OF On this day of 2006, before me, the undersigned notary public, personalty appeared Daniel W. Strocck, proved to me through satisfactory evidence of identification, which were to be the person whose name is signed on the preceding or attached document and acknowledged to me that he signed it voluntarily for its stated purpose. Witness my hand and official seal. My commission expires: Page 26 of 27 5130/2006 Notary Public ACKNOWLEDGMENTS STATE OF COLORADO COUNTY OF GARFIELD )§ The foregoing Instrument was acknowledged before me this day of , 2006, by as General Partner of Savage Limited Partnerships. Witness my hand and official seal. My commission expires' STATE OF COLORADO COUNTY OF GARFIELD Notary Public The foregoing instrument was acknowledged before me this day of , 2006, by Joan L. Savage. Witness my hand and official seal. My commission expires: STATE OF C_IDL0121400. COUNTY OF I?xY Notary Public )§ On this 3� day of WYlCL4) 2006, before me, the undersigned notary public, personally appeared Daniel W. Stroock, proved to me through satisfactory evidence of identification, which weretrA 1;6537,0)5V/to be the person whose name is signed on the preceding or attached document and acknowledged to me that he signed it voluntarily for its stated purpose. Witness my hand and official seal. My commission expires: L0-2 -l- 2Y1. Page 26 of 27 5/24/2006 No ary Public 14toa�&p�� Z'i-Z �if'i STATE OF NEW YORK COUNTY OF p„) l�'"Ia1 YoiL ) )§ On this ltiay of �.U' 2006, before me carne Sue Van de Bovenkamp to me known to be the individual described in and who executed the foregoing instrument, and acknowledged to me thal she executed the same. Witness my hand and official seal. My commission expires: M,M Z° ( d STATE OF TEXAS COUNTY OF HARRIS ) )§ The foregoing instrument was acknowledged before me this L'cc. Nota rbc(2."--FL Public Bonnie Mime notary Public, State of New York No. 0110614611112 Qualified la New York Comely Commission Expires May A nidi 30+say of k"140.(..1 2006, by WTP LP, a Delaware limited partnership, Witness my hand and official seal. My commission expires. Page 27 of 27 5/30/2006 as Attorney in Fact on behalf of OXY USA MAHYJ. [MiO REAufc MY COMPASSION EXPIRES Dember 1q, x1107 IIII 141151V ifi 11111 Receptianit: 784947 04/21/2010 11:23:66 p11 dean Marko I o1 6 Rso Fee:$36.00 Dco Fea:0.00 GARFIELD COUNTY CO SPECIAL WARRANTY DEED Savage Limited Partnership 1, Daniel W. Stroock and Sue Stuart Mortimore Erpf Van de 1 ovenkamp (together, "Grantors"), for no consideration, sell and.convey to JOJO Properties • LLC, whose address is P.O. Box 1926, Rifle, Colorado 81650, the property ("Property") in Garfield County, Colorado, legally described in the attached and incorporated Exhibit A (the "Property"), together with all its appurtenances, including but not limited to all ditches and ditch rights, water and water rights (whether direct flow, storage or underground water rights) appurtenant to or presently or historically used in connection with or adjudicated for use on all or any part of the Property. . Grantors warrant title to the Property only against those persons or entities claiming under Grantors, subject to general property taxes and assessments for 2010 and all subsequent years, and • any and all leases, easements, rights-of-way and other encumbrances of record. EFFECTIVE the l �1 clay of 1/2/2,) I , 2010. GRANTORS: SAVAGE LIMITED PARTNERSHIP I !Hun �'• 3o L. Savage, General P tnerr Daniel W. Stroock 54 Sue Stuart Mortimore tjrf Van de Bovenkam Dec ree 9'0/00 ,f/ ini a.I &i1s 1dfh&4.'C Oat/y ! / el %+P 6oi'po 4 ? f err ri J. Suv1rry� /cl4, fQ1 F/rte err. evcsd 3 8 uiir 04121)2010 11178595 47N Jean Rlboriao 2 of 5 Roo Fee:$36.00'Doo Foo.O.00 GARFlELD COUNTY CO STATE OF COLORADO COUNTY OF GARFIELD ) ) ss, The foregoing instnirnent was acknowledged before me this day of 2010, by Joan L. Savage, General Partner of Savage Limited Partnership 1. Witness my hand'and official seal. My commission expires: Notary Public STATE OF ) ss. COUNTY OF } The foregoing instrument was acknowledged before me this . day of 2010, by Daniel W. Stroock. Witness my hand and official seal. My commission expires: STATE OF v3 O (2-1C...) } ss. COUNTY OF �Ur< 1 Notary Public' • The foregoing instrument was acknowledged before me this day of f v 4: L - 2010, by Sue. Stuart Mortimore Erpf Van de Bovenkamp. „..,,i.:..1%...,1„, Bonnie Jahnst# i' -' c:i, �' Witness niy hand and official seal. Notary iPublic Ste �` ''t My commis p i (0 'S o 'Zs) (� Qualified In New ' , ` commission expires: '11(00,4 -linty, <• Comm n Ex lretAliy.'50, fit... •'*f: ; Notary Public 1111 'a 171irditlii.141.1WIP PCII IN 1 11 1 Racaptton#: 784947 04(2112010 11:23:66 RN Jean Rlberlco 3 of 6 Reo Fee:$3B.00 Doo Fee:0,00 GARFIELD COUNTY CO SPECIAL WARRANTY DEED Savage Limited Partnership I, Daniel W. Stroock and Sue Stuart Mortimore Erpf Van de Bovenkamp (together, "Grantors"), for no consideration, sell and convey to JOJO Properties LLC, whose address is P.O. Box 1926, Rifle, Colorado 81650, the property ("Property") in Garfield . County, Colorado, legally described in the attached and incorporated Exhibit A (the "Property"), together with ail its appurtenances, including but not limited to all ditches and ditch rights, water and water rights (whether direct flow, storage or underground water rights) appurtenant to or presently or historically used in connection with or adjudicated for use on all or any pact of the Property. Grantors warrant title to the Property only against those persons or entities claiming under Grantors, subject to general property taxes and assessments for 2010 and all subsequent years, and any and all leases, easements, rights-of-way and other encumbrances of record. EFFECTIVE the 5 day of , 2010, GRANTORS: SAVAGE LIIVIITED PARTNERSHIP I Joan L. Savage, General Partner Daniel W. Stroock Sue Stuart Mortimore Erpf Van de Bovenkamp 1111 ! "� MAW ICIANPRlVr Ntiiik 11111 0412420}0 Ii:23 55 AM 4 of 6 Rao Foo:$36.00 Doo 0.00 GARFIELD COUNTY CO STATE OF COLORADO COUNTY OF GARFIELD ) ) ss. ) The foregoing instrument was acknowledged before me this day of 2010, by Joan L. Savage, General Partner of Savage Limited Partnership I. Witness my hand and official seal, My commission expires: STATE OF /t/l(ej COUNTY OF *LI ieff ) ) ss. )' Notary Public The foregoing instniment was acknowledged before me thisay of 2010, by Daniel W. Stroock. Witness my hand and official seal.1 My commission expires: aG`61P,v J4 13011.0 STATE OF ) ) ss. COUNTY OF ) The foregoing instrument was acknowledged before me this day of 2010, by Sue Stuart Mortimore Erpf Van de Bovenkamp. Witness my hand and official seal. My commission expires: Nota lic Notary Public ®III �1pt �YiiI��� N�i1 ehmhil .h�,•I***:I�?I4 RN 11 Ill Racepi.ionii: 784947 04/21/2010 11:23:55 AN Jean Aiberioo 6 of 6 Reo Fee:$36.00 D°° fee:0.00 GARFIELD COUNTY CO EXHIBIT A T, 7 S.. R.97 W.. 66 P.M. (Conn Creek Ranch) Tracts: 38, 39 (West 20 acres only and excepting 1.26 acres therefrom); 40, 41, 42, 48, and 49 Also known as: Assessor Parcel No. 2411.082-00-011 T. 6 S... R. 97 W. 6`1' P.M. (Mount Logan Steer (Gus) Pasture) Sec. 1: Lots 20 and 21 Sec. 2: S1/2SE1/4, W1/2, Lots 17-24 Sec. 3; SE1/4, Lot 5, 12, and 13 Sec. 10: Ail Sec. 11:N1/2 Sec. 14: Ali Also known as: Assessor Parcel Nos, 2169-022-019, 2169-101=00-020, and 2169141-00-022 T.6S..R99W.,61h P.M. (Powell/Stahl Ranch) Tract 59, EXCEPT a parcel described as follows: Beginning al a point whence the WI/, corner of Section 25 bears N.86°50' W. 1323 feet; THENCE: W. 493 feet; THENCE: S.46°46' W. 165.92 feet; THENCE: S.8°59' W. 86.92 feet; THENCE: S.2°59' W. 838.15 feet; TI-IENCE: E. 671.09 feet; THENCE: N. 1036.44 feet, lo the point of beginning. Tract 60, Tract 61 Sec. 26: S'4SW''A, SW'/4SE%4, Lot 1 Sec. 27; Lot,1 Sec. 34: NE'ANW %4NEA Sec. 35: N'ANE1/4NW'/4, SW%NE'/4NWIA Also known as; Assessor Parcel Nos. 2165-261-00-008 and 2165-263-00-009 T.6S„R.99W,,6lh P.M, (Carr Creek Ranch) Tract 39 and. South 40 acres of Tract 38 Also known as: Assessor Parcel No. 2165-074-00-003 T. 5 S.. R. 99 W., 6th P.M. (BRUSH CREEK TIMBER AND STONE) Sec. 7: E1/2E1/2NEI/4SE1/4, E1/2E1/2SE1/4SE1/4, W1/2E112NE114SE1/4, W112NE114SE114, E1/2E1/2N W I/4SE114 Sec. 8: WI/2E1/2SEI/4SWI/4, W1/2SE1/4SW1/4, SWI/4SWI/4, W1/2E1/2NWI/4SW1/4, W 1/2NW1/4SW I/4 Sec. 17: W1/2E l/2NEl14NW 114, W 1/2NE1/4NW 1/4, E1/2E1/2NW 1/4NW 1/4, W1/2E1/2NW1/4NE1/4, W1/2NW1/4NEI/4, El/2E1/2NE1/4NW1/4 Also known as: Assessor Parcel No. 2141-083-00-003 T. 7 S.. R. 98 W.. 6th P.M. (BARBER TIMBER & STONE MINERAL RIGHTS) Sec. 27: NE IRS W1/4, SE1/4NW L/4 Also known as: Assessor Parcel No. 8029-201-07-000 All in Garfield County, Colorado ®XV Vendor Number: 9397801 Vendor Name: (OLD) Savage Limited Partnership I New: 3030 Properties, LLC Remit Address: P0. Box 1926 Rifle, Co 81650 Please provide the information needed below to complete the conversion to ACH payments. Name of individual completing this form: John W. Savage Phone Number: 970-625-1470 Remit Advice (choose one): • Email address:. savagejws©msn.com (Please provide if you have selected CCD) • Email (CCD) xx_ or transmitted to bank with payment (CTX) Beneficiary Bank (Bank Name): Wells Fargo N.A. Bank Address: 1542 Railroad Ave., Rifle, CO 81650 Bank Contact: Lillian. Dahlin Bank Phone: 970-625-6310 ABA/Routing #:. 102000076 Bank Account#:8633777365 (For ACH payments) OXY Inc. Occidental Tower 5005 LB] Freeway Dallas, TX 75244-6119 Fax: E -Mall: (Shared Services for the companies of Occidental Petroleum Corporation..... CHEMICALS: Occidental Chemical Corporation — Oxy Vinyls, LP — OxyMar — Ingleside Cogen - Inspec OIL & GAS: Oxy USA Inc. - Oxy USA WIT - Occidental Permian Ltd • Occidental of Elk Hills - DEMI - Centurion Pipeline -Vintage Production California LLC — Glenn Springs Holdings, Inc.) PAY TO THE ORDER OF MEMO JOJO PROPERTIES LLC PO SOX 1928 RIFLE, CO 81850 970.825.1470 WELLS FARGO BANK, M.A. www.Wollsfargo,com 23.7/1020 POO OOOO 100411' i:1020000 7 6: 8633???36511' AUTHORI2E0 SIGNATl1.iE 1004 1 a a DOLLARS 121 1 hp JOJO PROPERTIES LLC JOJO PROPERTIES LLC IMP 'CO NVPC{ECK 1004 1004 51N315739214 (4:Ig1 5114790 Form W-9 (Rev. October 2007) Department of the Treasury Internal Revenue Service Request for Taxpayer Identification Number and Certification Give form to the requester. Do not send to the IRS. 0 P W2 coag E a2 Name (as shown on your income tax return) JDJD Properties LLC Business name, if different from above Check appropriate box: ❑ Individual/Sole proprietor ❑ Corporation 0 Partnership m Limited liability company. Enter the tax classification (0=disregarded entity, C corporation, P=partnership) ► P 0 Other (see instructions) ► Exempt payee Address (number, street, and apt. or suite no.) PO Box 1926 City, state, and ZIP code Rifle, CO 81650 Requester's name and address (optional) Oxy USA List account number(s) here (optional) Payee ID: 9397801; Land Red: 9926404; Agrment No.: 14872800 Part I Taxpayer Identification Number (TIN) Enter your TIN in the appropriate box. The TIN provided must match the name given on Line 1 to avoid backup withholding. For individuals, this Is your social security number (SSN). However, for a resident alien, sole proprietor, or disregarded entity, see the Part I instructions on page 3. For other entities, it is your employer identification number (EIN). 11 you do not have a number, see How to get a TIN on page 3. Note. If the account is in more than one name, see the chart on page 4 for guidelines on whose number to enter. Part 11 Certification Social security number or Employer Identification number 27 2389987 Under penalties of perjury, I certify that: 1. The number shown on this form is my correct taxpayer identification number (or I am waiting for a number to be issued to me), and 2. 1 am not subject to backup withholding because: (a) ! am exempt from backup withholding, or (b) I have not been notified by the Internal Revenue Service (IRS) that I am subject to backup withholding as a result of a failure to report all Interest or dividends, or (0) the IRS has notified me that I am no longer subject to backup withholding, and 3. I am a U.S. citizen or other U.S. person,(defined below). Certification Instructions. You must cross out item 2 above if you have been notified by the IRS that you are currently subject to backup withholding because you have failed to report all interest and dividends on your tax return. For real estate transactions. item 2 does not apply. For mortgage interest paid, acquisition or abandonment of secured property, cancellation of debt, contributions to an individual retirement arrangement (IRA), and generally, payments other than interest and dividends, you are not required to sign the Certification, but you must provide your correct TIN. See the instructions on page 4. Sign Here Signature 01 U.S. person ► JOJO Properties LLC, John W. Savage i Dignaltysigned byIWOPrapereesLLClohnVCSavage Authorized Agent 9 ti DN: cn=i010 Properties LLC, John W. Savage Authorized Agent. x1010 AuthorizedAgPnt __EReweiAL LC, ow, eAmeall vagejw®msn.comr-uS General instructions Section references are to the Internal Revenue Code unless otherwise noted. Purpose of Form A person who is required to file an information retum with the IRS must obtain your correct taxpayer identification number (TIN) to report, for example, income paid to you, real estate transactions. mortgage interest you paid, acquisition or abandonment of secured property, cancellation of debt, or contributions you made to an IRA. Use Form W-9 only if you are a U.S. person (including a resident alien), to provide your correct TIN to the person requesting it (the requester) and, when applicable, to: 1. Certify that the TIN you are giving is correct (or you are waiting for a number to be issued), 2. Certify that you are not subject to backup withholding, or 3. Claim exemption from backup withholding if you are a U.S. exempt payee, If applicable, you are also certifying that as a U.S.' person, your allocable share of any partnership income from a U.S. trade or business is not subject to the withholding tax.on foreign partners' share of effectively connected Income. Note. If a requester gives you a form other than Form W-9 to request your TIN, you must use the requester's form if it is substantially similar to this Form W-9. Definition of a U.S. person. For federal tax purposes, you are considered a U.S. person if you are: • An individual who Is a U.S. citizen or U.S. resident alien, • A partnership, corporation, company, or association created or organized In the United States or under the laws of the United States, • An estate (other than a foreign estate), or • A domestic trust (as defined in Regulations section 301.7701-7). Special rules for partnerships. Partnerships that conduct a trade or business In the United States are generally required to pay a withholding tax on any foreign partners' share of income From such business. Further, in certain cases where a' Form W-9 has not been received, a partnership is required to presume that a partner i5 a foreign person, and pay the withholding tax. Therefore, if you are a U.S. person that is a partner in a partnership conducting a trade or business in the United States, provide Form W-9 to the partnership to establish your U.S. status and avoid withholding on your share of partnership income. The person who gives Form W-9 to the partnership for purposes of establishing Its U.S. status and avoiding withholding on its allocable share of net income from the partnership conducting a trade or business in the United States is in the following cases: • The U.S. owner of a disregarded entity and not the entity, Cat. No. 10231X Fom, VWI -9 (Rev. 10-2007) 11111 rkkriIi'`�M[� MILIIIIIIIiM'11+41 1I111tle /Hi 11111 Recoptiontl: 784285 04/06/2010 11:07:34 AIT Jean A1berloo • ' 1 of 1 Rec Fee:$6,00 Doo Fee:0.00 GARFIELD COUNTY CO • 2.. STATEMENT OF AUTHORITY § 38-30-172) This Statement of Authority relates to an entity named JOJO Properties LLC. The type of entity is a limited liability company. 3. The entity is formed under the laws of Colorado. 4. The mailing address of the entity is P.O. Box 1926, Rifle, Colorado 81650. . 5. The name and position of the person authorized to execute instruments conveying, encumbering, or otherwise affecting title to real property on behalf of the entity are John W. Savage, Manager of the entity. 6. The authority of the foregoing person to bind the entity is unlimited. 7. This Statement of Authority is executed on behalf of the entity pursuant to the provisions of C.R.S. § 38-30-172. 8. This Statement of Authority amends and supersedes in all respects any prior statement of authority executed on behalf of the entity. EXECUTED the 5-I4 day of 49)/2. , 2010. JOJO. ' ' OPERTIES LLC r :r, r STATE OF COLO' • •O COUNTY OF GARFIELD Savage, Man )ss. The foregoing instrument was acknowledged before me the John W. Savage, Manager of JOJO Properties LLC. Witness my hand and official seal. My commission expires: 6 9611 day of 2010, by % } z � N N w ma,V »< \f & d ! % a . y \ - 2 m: »¥zz« \ &. ERQ _r 0 Resources Corp. Denver 1842 Clarkson St. Denver, CO 80218 303.830.1188 Boise 3314 Grace St. Boise, ID 83703 208.373.7983 Durango 1015 1/2 Main Avenue Durango, CO 81301 970.422.2136 ;tern Slope ,-.0. Box 932 161 South 2"d St. Hotchkiss, CO 81419 970.872.3020 www.eroresources.com March 20, 2014 Katy Middleton Blue Sky Permitting and Planning, LLC 9321 54 Road Mesa, CO 81643 (Email -delivered) RE: Environmental Impact Report OXY USA WTP LP Pond 10 Dear Ms. Middleton, On April 24, 2013, ERO Resources Corporation (ERO) conducted a biological resource survey for Pond 10 in the Grand Valley Field on behalf of OXY USA WTP LP (Oxy). The pond is located approximately 10 miles north of DeBeque in Garfield County, Colorado. This document is intended to supplement a Land Use application to Garfield County. Location and Existing Conditions For the purposes of the proposed project, the survey area was defined as a uniform 0.5 mile surrounding the existing project envelope (Figure 1). The Iegal description of the approximate center of the project area is Sections 5 and 8, T7S, R97W of the 6th PM; UTM NAD 83 Zone 12N, 737050m Easting, 4372373m Northing; Latitude, Longitude: 39.468305°N, -108.244193°W; USGS Red Pinnacle, CO Quadrangle. Oxy is the surface owner. Currently, the Pond 10 project area contains an existing produced water storage pond fenced for site security purposes and wildlife exclusion. Flagging deterrents are installed over the pond to discourage birds from accessing the water. Photo 1. Looking southeast from northwest corner of Oxy Pond 10 project area (4.24.13). Consultants in Natural Resources and the Environment Page 2 The site also supports three storage areas in the vicinity of the existing produced water storage pond. Construction materials, construction equipment, assorted production equipment including separators, tanks, piping, and valves, and shipping containers are stored onsite. No liquids currently are stored in the storage sites. Photo 2. Looking south from northwest corner of Oxy Pond 10 project area (4.24.13). Photo 3. Looking west; Storage Area 3 at photo center and existing disturbed vegetation community in foreground (4.24.13). Proposed Project Oxy proposes to upgrade the existing site with the following modifications to the existing produced water storage pond: 1. Regrade existing two -pond layout into a single pond; 2. Install Pond liner system; 3. Upgrade sediment control along east edge of site; 4. Grade new access ramp to pond from west (existing disturbed areas); 5. Improve existing access road from south to include adequate traffic patterns/turning radius, grade, cattleguards, and drainage improvenwts; Resources Corporation Page 3 6. Re -install improved 8 -foot tall wildlife fence incorporating buried portions for deterring both large and small mammals (Chain link fence, with 1 foot below grade and 2 feet above grade mesh; see attached detail); 7. Replace flagging with bird netting to exclude birds from entering pond; and 8. Drill 3 new groundwater monitoring wells. Oxy proposes to upgrade the existing site with the following modifications to the existing storage areas: 1. Storage Area 1, install swale and sediment trap; 2. Storage Area 2, install swale and sediment trap and minor regrading; and 3. Storage Area 3, raise grade to level of existing pond access; improve access ramp and incorporate with new grade; and install retention pond. Oxy plans to beginning grading on or about May 1, with about 10 to 12 weeks required for construction and an additional 2 weeks for site clean-up. Changes to truck traffic for purposes of storage would be minimal. Construction materials, construction equipment, assorted production equipment to include separators, tanks, piping, and valves, and shipping containers would be stored onsite. No liquids would be stored in the storage sites. Environmental Setting ERO Natural Resources Specialist completed a visual site review of the proposed project areas (April 24, 2013). ERO walked the entire site, and reviewed the proposed project area for environmental issues requiring permitting or clearance, including wetlands, waters of the U.S., Threatened and Endangered species habitat, and noxious weeds. Colorado Parks and Wildlife (CPW) habitat and species/nest occurrence maps were referenced prior to and during field surveys. ERO also reviewed the most recent aerial photography (2011), U.S. Fish and Wildlife Service Information, Planning, and Conservation documents (USFWS 2013), State of Colorado (Colorado Department of Agriculture 2013) and the Garfield County Noxious Weed Lists (Garfield County 2013). National Resource Conservation Service (NRCS 2013) soil maps and National Wetland Indicator (USFWS NWI) maps were also referenced prior to site review. During the field review, Pond 10 was observed to be in a valley bottom at an approximate elevation of 5,800 feet above sea level (Figure 2). The existing pond location and parking, storage, and access areas consist of graveled and maintained surfaces with minimal to no vegetation. East of the pond location is a previously graded area that was disturbed during pad construction and has partially revegetated. These developed areas are immediately surrounded by sagebrush -steppe habitat. Cliff and cottonwood riparian habitat occur within 0.25 mile of the project area. The sagebrush -steppe habitat is dominated by sagebrush (Artemesia tridentata sp.), primarily along the eastern project area boundary. Dominant vegetation in the Pond 10 project area is listed in Table 1. ERO Resources Corporation Table 1. Vegetation observed near Pond 10. Page 4 Common Name Sagebrush Saltbush Cheat grass Gambel's oak Wheatgrasses Rye Crested wheatgrass Rabbitbrush Scientific Name Artemisia tridentata sp. Atriplex spp. Bromus tectorum Quercus gambelii Thinopyrum spp. Elymus spp. Agropyron cristatum Ericameria nauseosa Photo 4. Looking east from approximate center of Oxy Pond 10 project area showing disturbed areas (road and brighter green) and relatively undisturbed low sagebrush slopes (grey -green) (4.24.13). Photo 5. Looking south from near the eastern edge of Oxy Pond 10 project area; disturbed areas and sagebrush shrublands visible in photo (4.24.13). ERO Resources Corporation Photo 6. Looking northeast from Conn Creek Road toward Storage Areas 1 and 2 from Conn Creek Riparian area (Riparian area would not be disturbed) (4.24.13). Noxious Weeds No noxious weeds were observed at the time of the site visit (Colorado Department of Agriculture 2014, Garfield County 2014). However, the site visit was performed early in the season and germination and emergence was minimal. Federally threatened, endangered, proposed, and candidate Species Table 2 lists the federally threatened, endangered, proposed, and candidate (TEPC) species with the potential to occur in the project area, as defined by the U.S. Fish and Wildlife Service (USFWS) Information, Planning, and Conservation (IPaC) mapper. Table 2. TEPC species with the potential to occur in the project area. Common Name Mammals North American wolverine Birds Greater sage -grouse Mexican spotted owl Scientific Name Gulo gulo luscus Centrocercus minimus Strix occidentalis lucida USFWS Status PT C 1' Yellow -billed cuckoo Coccyzus americanus C CPW Status SE SC ST SC Potential to Occur? No No No No Page 5 Fish Bonytail chub Gila elegans E SE No Colorado pikeminnow Greenback cutthroat trout Humpback chub Razorback sucker Ptychocheilus lucius Oncorhynchus clarki stomias Gila cypha Xyrauchen texanus E T E ST ST ST SE No No No No ERO Resources Corporation Page 6 Common Name Scientific Name USFWS Status CPW Status Potential to Occur? Plants Ute ladies' -tresses Spiranthes diluvialis T - No DeBeque phacelia Phacelia submutica T- Hawks No Parachute beardtongue Penstemon debilis T - No E = Federal Endangered; T = Federal Threatened; C = Federal Candidate; P = Federal Proposed; PE = Federal Proposed Endangered; PT = Federal Proposed Threatened; SE = State Endangered; ST = State Threatened; SC = State Special Concern. Sources: USFWS 2014 There is potential for one species with ESA "candidate status" — greater sage - grouse (Centrocercus minimus) — to occur near the project area. According to the Colorado Oil and Gas Conservation Commission (COGCC) maps developed by Colorado Parks and Wildlife (CPW), the project area is 0.8 mile from a greater sage grouse production area (COGCC 2014a, CPW 2013; ERO Figure 3). However, the project area is outside of any sage -grouse habitat; no designated sage -grouse habitat would be impacted. The site was carefully reviewed and no visible evidence — scat, secal dropping, tracks, or feathers -- was observed during the site visit. General Wildlife A majority of the Pond 10 project envelope is disturbed or developed. However, many wildlife species are known to occur in the area. Most are adapted to human - caused disturbances in the region. Species may include coyote, mice, rats, raccoon, fox, various snakes, hawks, ground squirrels, and lizards. Table 3. Wildlife Species Known to Species Potential to Occur? Coyote Yes Mice Yes Rats Yes Raccoon Yes Fox Yes Snakes Yes Hawks Yes Ground squirrels Yes Lizards Yes A review of the COGCC CPW data identified the project area as entirely contained within mule deer critical winter range and within 1 mile of an elk winter concentration area (Figure 3). However, the project area is mostly disturbed and no evidence of use by mule deer was observed. ERO Resources Corporation No raptor nests or substrates were observed within the project area at the time of the site visit. There also were no visual or auditory observations of raptors during the survey. Black -billed magpie nests were observed in the cottonwood riparian drainage of Conn Creek west of the project area, and cliff nesting habitat is also present east of the project area. Migratory Birds Most birds in Colorado — with the exception of grouse and the non-native house sparrows, starlings, and rock pigeons — are protected by the MBTA. The regulatory definition of the MBTA prohibits, among other things, the act [or attempt] to pursue, hunt, shoot, wound, kill, trap, capture, or collect migratory birds, and applies to both live and dead birds as well as any part of their anatomy, nests, or eggs. However, the MBTA does not contain a prohibition that applies to the destruction of a migratory bird's habitat or the destruction of an inactive nest, as long as the nest or its contents are not collected. Nest destruction that results in the unpermitted take of migratory birds or their eggs is illegal and fully prosecutable under the rules of the MBTA (Migratory Bird Permit Memorandum, USFWS, April 15, 2003). The active nesting season for most migratory bird species in Colorado occurs between April 1 and August 31, which coincides with the peak construction season. Several state and federal agencies have adopted general species avoidance strategies, including vegetation removal outside of the breeding season, to preclude a violation of the MBTA. Impact Analysis The following sections evaluate the potential impacts of project implementation. ERO believes that the proposed impacts can be completely mitigated. The approach to mitigate impacts is summarized in the following "Recommendations" section. Noxious Weeds No noxious weeds were observed during the site review; however, based on previous surveys, weeds likely are present (see Table 4 for list of noxious weeds with the potential to occur in Garfield County). Proposed activities can increase the distribution of noxious weeds via seeds trapped in equipment tires and crevices or personnel shoes and clothing. The Colorado Noxious Weed Act designates undesirable plants that are considered threats to Colorado's natural resources. The Colorado Noxious Weed Act contains three lists of noxious weeds: List A, List B and List C. List A and B weeds are targeted for eradication. List C species are not considered major threats at this time and are not currently subject to eradication (see Appendix A for the Colorado Noxious Weed List). Garfield County has designated 19 species as noxious weeds (Garfield County 2013) (Table 4). Table 4. Garfield County Noxious Weed List. Common Name Canada thistle Chicory Scientific Name Cirsium (Breea) arvense Cichorium intybus Documented in Project area no no FRO Resources Corporation Page 7