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Home My WebLink About970386.tiffDEPARTMENT OF PLANNING SERVICES Weld County Administrative Offices, 1400 N. 17th Avenue, Greeley, Colorado 80631 Phone: (970) 353-6100, Ext. 3540 Fax (970) 352-6312 PLANNED UNIT DEVELOPMENT DISTRICT CHANGE OF ZONE APPLICATION FOR PLANNING DEPARTMENT USE ONLY: Case Number Application Fee: l gyp.rw Zoning District Receipt Number lD ca (O9 Date Application Checked By: Planner Assigned to Case: TO BE COMPLETED BY APPLICANT: (Print or type only except for required signatures). I (we), the undersigned, hereby request hearings before the Weld County Planning Commission and the Board of County Commissioners concerning the proposed PUD rezoning of the following described unincorporated area of Weld County,. Colorado: LEGAL DESCRIPTION SEE ATTACHED (If additional space is required, attach an additional sheet) PARCEL NUMBER: 1 3 0 7 3 0 0 0 0 0 3 1 (12 digit number found on Tax I.D. Information or obtained at the Assessor's Office. Property Address (if available): PRESENT ZONE AGR. PROPOSED ZONE PUD TOTAL ACREAGE 240 Acres OVERLAY ZONES Agricultural SURFACE FEE (PROPERTY OWNERS) OF AREA PROPOSED FOR PUD REZONING: NAME: Marilyn Taylor HOME TELEPHONE: 536-0839 ADDRESS: 7505 Weld Co. Rd. 39 NAME: ADDRESS: Ft. Lupton, Co. 80624 APPLICANT OR AUTHORIZED AGENT (if different than above): NAME: Acklam Associates, Inc. ADDRESS: 1001 E. Bridge St. P.O. Box 795 Brighton, Co. 80601 BUS.TELEPHONE: HOME TELEPHONE: BUS.TELEPHONE: HOME TELEPHONE: BUS.TELEPHONE. 659-8546 OWNER(S) AND LESSEES OF MINERAL RIGHTS ON OR UNDER THE SUBJECT PROPERTIES OF RECORD IN THE WELD COUNTY ASSESSOR'S OFFICE: NAME: See Attached ADDRESS: NAME: ADDRESS: Revised: 3-28-96 Weld County Planning Dept. SEP 1 6 1996 RECEIVED Signature: Owner or Authorized Agent 970386 �I 7 I LEGAL DESCRIPTION: A parcel of land in the West one-half of the Northeast one - quarter of Section 31, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado described as: Beginning at the Northeast corner of said West one-half Northeast one -quarter; thence S00°40'00"W on an assumed bearing along the East line of said West one-half Northeast one -quarter a distance of 941.26 feet; thence N13°37'00"W a distance of 968.42 feet to a point on the north line of said West one-half Northeast one - quarter; thence N90°00'00"E along said north line a distance of 238.94 feet to the Point of Beginning. The East one-half of the Northeast one -quarter of Section 31, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado. The East one-half of the Southeast one -quarter of Section 31, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado. The Southeast one -quarter of Section 30, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado. EXCEPTING THEREFROM: Parts of the Southeast one -quarter of Section 30 and the East one-half of the East one-half of Section 31, in Township 2 North, Range 65 West of the 6th Principal Meridian, described as follows: Beginning at the Northeast corner of the said Southeast one -quarter of Section 30; thence S00°00'00"W on an assumed bearing along the East line of the said Southeast one -quarter a distance of 1197.50 feet to the True Point of Beginning; thence S90°00'00"W a distance of 1008.26 feet; thence S26°38'00"W a distance of 623.54 feet; thence 515°11'50"E a distance of 925.34 feet to a point on the North line of said East one-half of Section 31; thence N89°45'10"E along said North line a distance of 360.22 feet; thence 526°23'40"E a distance of 1077.99 feet to a point 200.00 feet West of the East line of said East one-half of the East one-half of Section 31; thence S00°20'30"W parallel with the said East line a distance of 3722.86 feet to a point 650.00 feet north of the South line of said East one-half of the East one-half of Section 31; thence 389°57'35"W parallel with the said South line a distance of 1125.65 feet to a point on the West line of said East one-half of the East one-half of Section 31; thence S00°23'20"W along said West line a distance of 650.00 feet to the Southwest corner of the said East one-half of the East one-half of Section 31; thence N89°57'35"E along the South line of the said East one-half of the East one-half of Section 31 a distance of 1326.18 feet to the Southeast corner of the said East one-half of Section 31; thence N00°20'30"E along the East line of the said East one-half of the East one-half of Section 31 a distance of 5341.31 feet to the Southeast corner of Section 30; 0°00'00"E along the East line of said Section 30 a distance of 1445.85 feet to the True Point of Beginning. 970386 The Platte Valley Airpark P.U.D. will allow for the sale of 39 lots (in the area designated as "Area B" on Airpark P.U.D. Plats) for the sole purpose of the construction of aircraft hangers and/or the storage of aircraft. The only residential dwelling in the P.U.D. district will be that of the airpark manager (a house already existing in Area A), no other residential dwellings will be permitted in this P.U.D. district. The area designated as "Area A" shall consist of the existing structures, runways, taxiways, the erection of portable hangers, the construction of an aircraft wash bay and the construction of a Fixed Base Operations facility, the exact location of which is yet to be determined. This airpark has existed for quite some time and is in a rural (agricultural) area, therefor the creation of a P.U.D. district of this configuration should have no more impact on the surrounding area then the airpark has in it's present form. In fact, Area "A" will have an overlay zoning for agriculture and open areas may by used for this purpose as long as it does not interfere with Airpark operations or safety. The following is a more in-depth description of the Airpark P.U.D. concept: AREA "A" will consist of 227.57 acres more or less and the following uses: 1) Runways and taxiways for the sole use of airplanes (existing). 2) Airplane maintenance facility (existing). 3) Future fixed base operation facility (proposed). 4) Portable Hangars (proposed). 5) Above ground fuel storage (existing). 6) Public parking area (existing). 7) One residential facility for airpark manager (existing). 8) Airpark registration and tower facility (existing). 9) Airplane wash bay (proposed). 10) Remaining unimproved areas may be used for agricultural purposes as allowed in the A-3 Zone district as long as it does not hinder the operation of the Airpark. 11) All improvements are to conform with the Weld County Standards and Regulations for the construction of buildings. 12) Identification Signs: A. One permanent identification sign will be provided at the point of ingress. 13) Area "A" complies with the CDPS Storm Water Management Plan and has been approved by the Colorado Division of Aeronautics. 970386 14) Wash bay waste water will be received by a grease trap, septic tank and leach field. AREA "B" will consist of 12.58 acres more or less and the following uses: Thirty-nine Lots ranging in size from 2025 square feet to 14,750 square feet in eight Blocks for the sole purpose of the construction of aircraft hangers and/or the storage of aircraft. 1) Private Airplane Hangars - (The following standards shall be used as guidelines for the construction of buildings on the Airpark P.U.D. by the owners of individual lots in Area "B". These standards are intended to provide a minimum criteria to assure that all structures reasonably conform with others structures in the Airpark. It is the intent of the Hangars Owners Association for Area "B" to avoid a haphazard appearance or unsound structures that will detract from the Airparks integrity.) A. EXTERIOR - All hangars shall have exterior walls constructed with metal siding with vertical corrugations. The metal shall be treated with a white protective surface. (Baked enamel is preferable). Roofs shall also be covered with metal roofing material similar to the siding. Aluminum roofing and siding is acceptable but must be of a heavy gauge to withstand high winds and hail. Aluminum material should have a baked enamel finish, for traditional paints do not adhere well to aluminum and will require excessive maintenance. B. ROOFS - All roofs shall be of the hip type. A one -in -twelve pitch is required. Roof run-off shall not affect adjacent buildings. Skylights are acceptable, provided that they adequately fastened to the roof so as not to be separated from the building by gusty winds. C. PERMITS - Any buildings shall be approved by the Weld • County Planning Office and appropriate permits shall be obtained prior to beginning construction. D. FOUNDATIONS - All hangars shall have an adequate foundation. Pole barn type building shall have at least four feet of pole below the grade and be set in a concrete caisson which is at least three times the diameter or thickness of the pole. All hangars shall have a floor that is built up from the surrounding grade. All slab foundations shall be constructed on compacted soil and meet with the approval of the Weld County Building Department prier to construction. 2 970386 E. ELECTRICAL - Any electrical service, unless otherwise agreed upon with Airpark management shall be provided by the owner. Such installations shall be buried outside of the building and shall be capable of meeting local codes.. F. FUEL STORAGE - Storage of automotive fuel or aviation fuel is discouraged. Should it be necessary to do so adequate containers shall be used by the tenant and adequate fire extinguishers will be required. Propane or other bottled gas may be used in the building, but also must be stored and handled properly. G. PAVING - Paving will be as shown on the Airpark P.U.D. Plat. Any damage to the existing pavement caused by the owners actions shall be repaired immediately by the owner, at their expense. Any pavement installed by the owner shall be of equivalent quality of that provided by the Airpark (two inch compacted hot mix asphalt or four to six inches of concrete with reinforcement). Waste oil shall not be applied on the ground of the Airpark under any circumstances. H. PORTABLE HANGARS - Portable hangars are not allowed in this area. I. HEIGHT - No building shall exceed twenty (20) feet in overall height. Any structures or objects that exceed this limitation construction. J. DRAINAGE - All hangars shall have adequate drainage around them to allow the roof drainage to flow away from the building into drainage provided by the Airpark. Such drainage shall not enter into other hangars or cause erosion around the hangar shall be approved by the Airpark Management prior to itself. K. PARKING - Automobile parking is not permitted around the hangar. Short term parking for unloading or "in -and -out" access to the hangar is permitted. Long term parking shall be either inside the hangar itself or in the Airpark parking lot. Short term aircraft parking is permitted immediately in front of the hangar, provided it does not interfere with other tenants use of the facility. All taxiways are for the primary use of the aircraft. Automobiles traveling to and from hangers should use uppmost caution when traveling on the taxiways as no signs will be posted. L. QUARTERS - No living quarters will be allowed. M. DOORS - All hangars will have bi-fold doors. 3 970386 N. HEAT - Individual lot owners are responsible for the heating of their hangars if so desired. All heating units shall conform with Weld County Standards. O. FIRE PROTECTION - Individual lot owners are responsible to provide adequate fire extinguishers for their hangars per Weld County Standards. P. STORAGE - No outside storage will be allowed. The hangars are to be used for Airplane storage only along with any associated appurtenances. Maintenance of the airplanes will be allowed in the hangars. Q. MINIMUM BUILDING SETBACKS - BLOCKS 3,4,5 and 6 Front - 0' Rear - 5' Side - 5' Corner - 0' BLOCKS 2 and 9 Front - 0' Rear - 0' Side - 5' (Except when contiguous lots are owned by same Person) Corner - 0' BLOCKS 7 and 8 Front - 0' Rear - 0' Side - 0' Corner - 0' R. OWNERSHIP AND MAINTENANCE - All lots are to be individually owned and maintained. OUTLOT "A" is to be owned and maintained by the Hangars Owners Association. S. WATER SOURCE - The existing home and aircraft maintenance facility have an existing water source. The aircraft wash bay will be supplied by ether an existing source or a new well will be needed to supply the necessary water. T. SEWAGE DISPOSAL FACILITIES - The existing home and aircraft maintenance facility have existing sewage disposal facilities. No other facilities are planned U. ACCESS - The Site can be accessed via Weld County Road 39, which intersects Weld County Road 18 at one end and dead ends at the south. 4 970386 V. HAZARD AREA - The Site does not fall within a flood hazard area or a geologic hazard area. 5 970386 AFFIDAVIT OF INTEREST OWNERS SURFACE ESTATE THE UNDERSIGNED, being first duly sworn, states that to the best of his or her knowledge the attached list is a true and accurate list of the names, addresses, and the corresponding Parcel Identification Number assigned by the Weld County Assessor of the owners' of property (the surface estate) within live hundred feet of the property under consideration This list was compiled from the records of the Weld County Assessor, or an ownership update from a title or abstract company or attorney derived from such records, or from the records of the Weld County Clerk and Recorder The list compiled from the records of the Weld County Assessor shall have been assembled within thirty days of the application's submission date. signature 970386 PLATTE VALLEY AIRPARK, LTD. SURROUNDING PROPERTY OWNERS 1307-30-0-00-024 1473-06-0-00-017 Hobday, Charles 140 So. Wood Dale Road #106 Wood Dale, I1. 60191 1307-30-0-00-017 Roland, W.L. & Arndt, Mary Angela & Anthony, Edward c/o Opdyke Agency 1603 9th St. Greeley, Co. 90631 1307-29-0-00-035 Waldbaum, Milton G. Co. of Colo. 501 No. Main St. Wakefield, Ne. 68784 1307-32-0-00-011 Riley, Earl R. & Margaret H. 19462 Weld Co. Rd. #16 Ft. Lupton, Co. 80621 1307-32-0-00-033 Aigaki Family, LLC 12511 E. 112th Ave. Henderson, Co. 80640 1307-31-0-00-003 1307-31-0-00-028 1307-31-0-00-027 1307-31-0-00-025 Miller Partners, Ltd. 6854 Weld Co. Rd. 37 Ft. Lupton, Co. 80621 1307-31-0-00-026 Miller, Mary 6854 Weld Co. Rd. 37 Ft. Lupton, Co. 80621 1307-31-0-00-029 1307-31-0-00-030 Laskoski, Robert & Shirley R. 6174 Weld Co. Rd. 37 Ft. Lupton, Co. 80621 970386 1473-06-0-00-016 Artese, Philip L. Trust 18527 Colo. Hwy. 52 Ft. Lupton, Co. 80621 1473-06-0-00-001 Thomason, Lela Fern 209 Harrison Ave. Ft. Lupton, Co. 80621 1473-05-0-00-015 Ziemer Trust Box 195 Hudson, Co. 80642 970386 AFFIDAVIT OF INTEREST OWNERS MINERALS AND SURFACE ESTATE Legal Description: STATE OF COLORADO COUNTY OF WELD ss. THE UNDERSIGNED, being first duly sworn, states that to the best of his or her knowledge the attached list is a true and accurate list of the names, addresses. and the corresponding Parcel Identification Number assigned by the Weld County Assessor of the owners' of property (the surface estate) within five hundred feet of he property under consideration. This list was compiled from the records of the Weld County Assessor or an ownership update from a title or abstract company or attorney, derived from such records. or from :he records of the Weld County Clerk and Recorder The list compiled from the records of the Weld County Assessor shall nave been assembled within thirty days of the application's submission date. SIC72t-7.e. to 970386 AIRPARK POD MINERAL OWNERS AND LESSEES OF MINERAL OWNERS OWNERS 1) PLATTE VALLEY AIRPARK, LTD. (A Limited Partnership) 7507 WCR 39 Ft. Lupton, Co. 80621 2) DALLAS A. CROSS 392 Central Brighton, Co. 80601 3) ALFRED AND LORRAINE SATER 7728 WCR 24 Longmont, Co. 80501 LESSEES 1) SOCO (Snyder Oil & Gas Co.) 1625 Broadway Suite 2200 Denver, Co. 80202 970386 SURVEYING - ENGINEERING Soils classification for Airpark P.U.D. in Sections 30 and 31, Township 2 North, Range 65 West of the 6thPr`in5cipial Meridian. vs A #6�ti4 • 44_t I 44 - Olney fine sandy loam. 1 to 3 percent slopes 45 - Olney fine sandy loam. 3 to 5 percent slopes 69 - Valent sand, 0 tc 3 percent slopes 70 - Valent sand, 3 to 9 percent slopes Olney series The Olney series consists of deep, well drained soils that formed in alluvium. Olney soils are on plains. Slopes are 0 to 5 percent. Olney soils are similar to the Fort Collins and Vona soils and are near the Kim, Nelson, Otero, and Thedalund soils. Fort Collins soils are less than 35 percent fine and coarser sand in the B horizon. Vona soils are less than 18 percent clay in the B horizon. Nelson and Thedalund soils have sandstone and shale between 20 and 40 inches. Typical pedon of Olney fine sandy loam. 0 to 1 percent slopes, 1,320 feet north and 284 feet east of southwest corner sec. 28, T. 6 N., R. 66 W. dp-0 to 10 inches; grayish brown (10YR 5i2) fine sandy loam, dark grayish brown (10YR 4/2) moist; weak fine granular structure; slightly hard, very friable; noncalcareous; mildly alkaline; abrupt smooth boundary. B2t-10 to 20 inches: yellowish brown (10YR 5/4) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium prismatic structure parting to moderate fine subangular blocky; hard, friable; common moderately thick clay films on faces of peds: noncalcareous; mildly alkaline; clear wavy boundary. 63ca-20 to 25 inches; very pale brown (10YR 7/3) sandy clay loam, brown (10YR 5/3) moist; moderate coarse prismatic structure: slightly hard, very friable: some visible lime oceuring in fine to medium seams and soft masts; calcareous; moderately alkaline; gradual smooth boundary. Cca-25 to 60 inches: very pale brown (10YR 7/3) fine sandy loam, pale brown (10YR 6/3) moist: weak coarse subangular blocky structure; slightly hard, very friable; some visible lime in fine to medium threads and seams; calcareous; moderately alkaline. Thickness of the solum ranges from 17 to 30 inches. Coarse fragments make up as much as 15 percent of the solum. Depth to tree carbonates ranges from 10 to 24 inches. The A horizon has hue of 10YR or 25Y, value of 5 or 6 dry and 3 to 5 moist, and chroma of 2 or 3. It is fine sandy loam or loamy sand. The 82t horizon is commonly sandy clay loam, but clay content ranges from '8 to 30 percent. Valent series The Valent series consists of deep, excessively drained soils that formed in eoiian deposits. Valent soils are on plains. Slopes are 0 to 9 percent. Valent soils are near the Loup, Bee], Osgood, and Vona soils. Loup and Boel soils are poorly drained. Osgood and Vona soils have a B horizon. Typical pedon of Valent sand, 0 to 3 percent slopes, 2,220 feet north and 132 feet west of southeast corner sec. 8, T. 4 N., R. 62 W. Al -0 to 3 inches; brown (10YR 5/3) sand, dark grayish brown (10YR 4/2) moist: single grained; loose; neutral; clear smooth boundary. Cl-3 to 60 inches; brown (10YR 5/3) sand, dark grayish brown (10YR 4/2) moist: single grained: loose; neutral. Coarse fragments make up 0 to LO percent of the soium and are mainly scattered gravel. Depth to free carbonates is more than 40 inches. The .1 horizon has hue of 10YR :and I5Y "aiue of 5 or O Or: and 4 to 5 moist. and chroma of 2 or 3. 970286 0286 44 —Olney -loamy sand, 1 to 3 percent slopes. This is a deep, well drained soil on smooth plains at elevations of 4,600 to 5,200 feet. It formed in mixed outwash deposits. Included in mapping are some small leveled areas. Typically the surface layer is grayish brown loamy sand about 9 inches thick. The subsoil is yellowish brown and very pale brown sandy clay loam about 15 inches thick. The substratum to a depth of 60 inches is very pale brown, calcareous fine sandy loam. Permeability and available water capacity are moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. In irrigated areas this soil is suited to the crops com- monly grown in the area. Perennial grasses and alfalfa or close grown crops should be grown at least 50 percent of the time. Contour ditches and corrugations can be used in irrigating crops and pasture. Furrows, contour furrows, and cross slope furrows are suitable for row crops. Sprin- kler irrigation is also desirable. Keeping tillage to a minimum and utilizing crop residue help to control ero- sion. Maintaining fertility is important. Crops respond to applications of phosphorus and nitrogen. In nonirrigated areas this soil is suited to winter wheat, barley, and sorghum. Most of the the acreage is planted to winter wheat. The predicted average yield is 20 bushels per acre. The soil is usually summer fallowed in alternate years to allow moisture accumulation. Generally precipitation is too low for beneficial use of fertilizer. Stubble mulch farming, striperopping, and minimum til- lage are needed to control soil blowing and water erosion. Terracing also may be needed to control water erosion. The potential native vegetation on this range site is dominated by sand bluestem. sand reedgrass, and blue grama. Needleandthread, switchgrass. sideoats grama. and western wheatgrass are also prominent. Potential production ranges from 2.200 pounds per acre in favora- ble years to 1...S00 pounds in unfavorable years. As range condition deteriorates. the sand bluestem, sand reedgrass. and switchgrass decrease and blue grama. sand dropseed. and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, switchgrass, sideoats grama, blue grama, pubescent wheatgrass, and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock. It can be seeded into a clean, firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. Windbreaks and environmental plantings are generally suited to this soil. Soil blowing, the principal hazard in establishing trees and shrubs, can be controlled by cul- tivating only in the tree row and by leaving a strip of vegetation between the rows. Supplemental irrigation may be needed at the time of planting and during dry periods. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, Siberian elm, Russian -olive, and hackberry. The shrubs best suited are skunkbush sumac, lilac, and Siberi- an peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species can be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- tial and should be included in plans for habitat develop- ment, especially in areas of intensive agriculture. Range- land wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing and reseeding where needed. This soil has good potential for urban development. The only limiting feature is the moderately rapid permeability in the substratum, which causes a hazard of ground water contamination from sewage lagoons. The loamy sand sur- face layer is a limitation for recreational development. Once established, the lawns, shrubs, and trees grow well. Capability subclass IIIe irrigated, IVe nonirrigated; Sandy Plains range site. 970386 45 —Olney loamy sand. 3 to 5 percent slopes. This is a deep, well drained soil on plains at elevations of 4,600 to 5,200 feet. It formed in mixed outwash deposits. Included in mapping are small areas of soils that have sandstone and shale within a depth of 60 inches and some small leveled areas. Typically the surface layer of this Olney soil is grayish brown loamy sand about 7 inches thick. The subsoil is yel- lowish brown and very pale brown sandy clay loam about 14 inches thick. The substratum to a depth of 60 inches is very pale brown, calcareous fine sandy loam. Permeability and available water capacity are moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard if low. In irrigated areas this soil is suited to the crops com- monly grown in the area. Perennial grasses and alfalfa or close grown crops should be grown at least 50 percent of the time. Close grown crops and pasture can be irrigated with contour ditches and corrugations. Furrows, contour furrows, and cross slope furrows are suitable for row crops. Sprinkler irrigation is also desirable. Keeping til- lage to a minimum and utilizing crop residue help to con- trol erosion. Maintaining fertility and organic matter con- tent is important. Crops respond to barnyard manure and commercial fertilizer. The potential native vegetation on this range site is dominated by sand bluestem, sand reedgrass. and blue grama. Needleandthread, switch,grass, sideoats grama and western wheatgrass are also prominent. Potential production ranges from 2.20!) pounds per acre in favora- ble years to 1,300 pounds '.n unfavorable years. As range condition deteriorates, the sand bluestem, sand reedgrass, and switchgrass decrease and blue grama, sand dropseed. and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, switchgrass, sideoats grama, blue grama, pubescent wheatgrass. and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock. It can be seeded into clean, firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. Windbreaks and environmental plantings are generally suited to this soil. Soil blowing, the principal hazard in establishing trees and shrubs, can be controlled by cul- tivating only in the tree row and by leaving a strip of vegetation between the rows. Supplemental irrigation may be needed at the time of planting and during dry periods. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, Siberian elm, Russian -olive, and hackberry. The shrubs best suited are skunkbush sumac, lilac, and Siberi- an peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species can be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- tial and should be included in plans for habitat develop- ment, especially in areas of intensive agriculture. Range- land wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. This soil has good potential for urban development. The only limiting feature is the moderately rapid permeability in the substratum, which causes a hazard of ground water contamination from sewage lagoons. The loamy sand sur- face layer is a limitation for recreational development. Once established, the lawns, shrubs, and trees grow well. Capability subclass IIIe irrigated, VI nonirrigated; Sandy Plains range site. 970386 69—Valent sand. 0 to 3 percent slopes. This is a deep, excessively drained soil on plains at elevations of 4,650 to 5.100 feet. It formed in eolian deposits. Included in mapping are small areas of soils that have lime within a depth of 40 inches. Typically the surface layer is brown sand about E inches thick. The underlying material to a depth of 60 inches is brown sand. Permeability is rapid. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. This soil is suited to limited cropping. Intensive cropping is hazardous because of erosion. The cropping system should be limited to such close grown crops as al- falfa, wheat, and barley. The soil also is suited to ir- rigated pasture. A suitable cropping system is 3 to 4 years of alfalfa followed by 2 years of corn and small grain and alfalfa seeded with a nurse crop. Closely spaced contour ditches or sprinkers can be used in irrigating close grown crops. Contour furrows or sprin- klers should be used for new crops. Applications of bar- nyard manure and commercial fertilizer help to maintain good production. The potential vegetation is dominated by sand bluestem, sand reedgrass, switchgrass, sideoats grama, needleandthread, little bluestem, and blue grama. Poten- tial production ranges from 2,500 pounds per acre in favorable years to 1,800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem, switchgrass, sand reedgrass, sideoats grama, and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, indiangrass, switchgrass, sideoats grama, little bluestem, and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder, or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management also can help in improving deteriorated range. Windbreaks and environmental plantings are fairly well suited to this soil. Blowing sand and the moderate availa- ble water capacity are the principal hazards in establish- ing trees and shrubs. The soil is so loose that trees should be planted in shallow furrows, maintaining vegetation between the rows. Supplemental irrigation is needed to insure survival. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, and Siberian elm. The shrubs best suited are skunkbush sumac, lilac, and Siberian peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species can be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- tial and should be included in plans for habitat develop- ment. especially in areas of intensive agriculture. Range- land wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. This soil has fair potential for urban development. The primary limiting soil features are the rapid permeabilit,- and the susceptibility to soil blowing. Septic tank absorp- tion fields function properly. but in places the sandy sub- stratum does not properly filter the leachate. Sewage lagoons must be sealed. Once established, the iawnr- shrubs. and trees grow well. Capability subclass IVe ir- rigated, Vie nonirrigated: Deep Sand range site. 970386 70—Valent sand. 3 to 9 percent slopes. This is a deep. excessively drained soil on plains at elevations of 4,650 to 5.100 feet. It formed in eolian deposits. Included in mapping are small areas of soils that have lime within a depth of 40 inches. Also included are small areas of soils that have sandstone between 40 and 60 inches. Typically the surface layer of the Valent soil is brown sand about 6 inches thick. The underlying material to a depth of 60 inches is brown sand. Permeability is rapid. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. The potential vegetation is dominated by sand bluestem, sand reedgrass, switchgrass, sideoats grama, needleandthread, little bluestem, and blue grama. Poten- tial production ranges from 2,500 pounds per acre in favorable years to 1,800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem, switchgrass, sand reedgrass, sideoats grama, and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, indiangrass, switchgrass, side -oats grama, little bluestem. and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management can also help in improving deteriorated range. Windbreaks and environmental plantings are generally not suited to this soil. Onsite investigation is needed to determine if plantings are feasible. Wildlife is an important secondary use of this soil. Ran- geland wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. This soil has fair potential for urban development. The chief limiting soil features are the rapid permeability and the susceptibility to soil blowing. Septic tank absorption fields function properly, but in places the sandy sub- stratum does not properly filter the leachate. Sewage lagoons must be sealed. Once established, lawns, shrubs, and trees grow well. Capability subclass V Ie irrigated, VIe nonirrigated: Deep Sand range site. 970386 set .$R. COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St., Denver. Colorado 90203 PERMIT APPLICATION FOAM Aeplieatton must complete where ( I A PERMIT TO USE GROUND WATER ..plicable. Type or ( I A PERMIT TO CONSTRUCT A WELL print in BLACK FOR: t I A PERMIT TO INSTALL A PUMP K. No overstrikes or erasures unless I REPLACEMENT FOR N0, 3d/O2 :nr traied. : OTHER Change from domestic to Comtner^ial designation WATER COURT CASE NO. (1) APPLICANT S mailing address jFQR OFFICE USE ONLY: DO NOT WRITE IN THIS COLUMN NAME ,Platte Valley Airaark, Ltd, STREET 7505 Weld County `cad ' Fort Lupton Co. 80621 i$tatei ;LID; rEL:"tlGiii: NO. OM) 659'7265 (2) LOCATION OF PROPOSED WELL - my Nerd NE ;•: cif tht - ._.S :/a, Sec;icn Rnq. 6 P M., WATER USE AND WELL DATA Proposed maximum pumping rate (gpm) 14 gpm Average •tnnual arnnunt of ground water to be appropriated (acre-feet!' 3 acre --fee. Number of acres to be irrigated: none or000sea :atai deotn :feet) :Aquifer grourd water is to be obtained from: Owner's well designation Q . .AVER TO BE USEQ FOR: HOUSEHOLD USE ONLY I DOMESTIC (1) c I LIVESTOCK (2) (X ) COMMERCIAL (d) rip :rrigatinn (p) i ) INDUSTRIAL ;5) IRRIGATION (8i ( I MUNICIPAL (8) Pr} OTHER (9) _4(L /3Qit9'CI CrQG DETAIL THE USE ON BAC:i (4) DRILLER N. Street (aty _ /A ;statr Telephone No Lic.. No. Receipt No �6; Basle Dist CONDITIONS QFAPPROvAL This Ur uaud in such a way as 'o cause no material injury to existing water rights. The issuance of the permit does not assure the applicant flick Iry injury will occur to another vested water right or preclude another owner of a vested vvaEcr right from seeking relief in a civil court action. APPLICATION APPROVED PERMIT NUMBER .. DATE ISSUED _ EXPIRATION DATE STATE ENGINEER! COUNTY 'S7038tr -- E5) ;_,I_t '"1 "771,, (.7 5• } THE LOCATION OF THE PROPOSED WELL ari the area on which the water will be used must be indicated c,n 'he diagram below. Use the CENTER SECTION 11 section, 640 acres) for the well location. - — —r NORTH ^ z. Jl 2 0 1 MILE, 5290 FEET - — NQAri-. SECTION L!,'vc .r--_— —* L -I Cn SOUTH SECTION LINE — m r1 -.- The scale of tne O Lgram is 2 :rtahes = I ?rile E;1r;n small square represents 40 acres. MITE:I i= QuiVAI.ENrs rAI LE 'Ro„ears( f=igures: An acre -(not ;Inver, 1 tore of Inner 1 r,ot dean I tunic foot tier Second ICfC 449 gailons Der ,n.nute •goat; A family of 5 w,+I rwtNrra 0001.A.n5551raiy ' ncrepfcut or ware per rear 1 acre•fuat . 43.660 viitilc teat :725.900 ge!Iw-s 1.000 aorr Dumped nont,nooLisry int are rtay .^,rorjucos 4 42 .;r -p !!et (10) LAND ON WHICH GROUND WATER WILL BE VSED; Owntirfsl: N/A • et err ,. s Legal desorption- A 1 `*1 - ft, frQn'1 ""0e)Gf ,'n7`w (?Orin or IAuthf SA! line (± ft from Leg '1 sec line (sae pr west) LC' --- BLOCK _FILING a SUf)UoiIu'N, (6) H WELL MUST 8 LO ATED_SELOW yrdistances from section lines. (7) TRALT_Qk WHICH WELL WILL Ill LOCATED Owner: A -M to As r - No. of seras a.? Will this oe zt'e only well on this tract? ye S (8) PROPOSED CASING, PROGRAM P1ai,, Casing reitc 4.4/e (C 9 sr<c(/ J �- � _ rn. from �� ft. to. ft In. from eft, to. ft, Pri'JraLed casing 7 71 rn. from g/ ft. to � 7d ft. m. from _ ^._ ft. to ft. (9) FOR REPLACEMENT WELLS giveaistance Ina direction from ola well and plans for plugging it; N1� No. of rcresf .3 '7 (11) DL TAILED_ DESCRIPTION of the use of ;round ':rater; Household use ind domestic wells mutt indicate s�rrtem to be used.type of disposal hens household with sec and airport operations offices it; main hang r rath septic system and flight school (trailer house) with seperste septic system. Other than household, usage is for sanitary facilities in office areas, (12) OTHER WATEfi f1ICFlTF i„rr.l WI tics land. nriuo.ng NOM. C Iv'tl end 4Vatcr Cuurt Case Numbers. Type or no( 11 ( tJceri far +0t.rr1 Ose) Desorption of land on which used /YQN ( I;i) t Pit Aret, II:HIV 1 ii) tit A 1 htS) THAT THE INFORMATION SET FORTH HEREON IS TRUE TO THE BEST OF Hj KNOWLEDGE. Vice Pre.4kiietnt, Colorado Airparlc Asscciate� Genera axtner or Platte Valley _Airpark Ltd, C v A 2 vJ' PctA...7` P f1 Use additional il,r+,.ets of ,paper if more space is required. 970386 PLATTE VALLEY AIRPARK DECLARATION OF COVENANTS, CONDITIONS AND RESTRICTIONS COUNTY OF WELD, STATE OF COLORADO KNOW ALL MEN BY THESE PRESENTS, that as of this day of , 1996 Platte Valley Airpark, Ltd., a Colorado Limited Partnership, ("Declarant") is the owner of the following described property ("the Property"), to -wit: Airpark PUD, a part of the East 1/2 of Sections 30 and 31, Township 2 North, Range 65 West of the 6th P.M., Weld County, Colorado WHEREAS, Declarant desires to place covenants, conditions and restrictions on the lots shown on the PUD Plat of said Airpark PUD for the use and benefit of the owners and their grantees in order to establish, develop and maintain an airpark with hangars, taxiways, runways and amenities for the use and benefit of the owners and users thereof. NOW, THEREFORE, in consideration of the premises, the Declarant for itself, its successors, grantees and assigns, does hereby declare that the Property shall henceforth be owned, held, conveyed, encumbered, leased, improved, used, occupied and enjoyed subject to the following restrictions, covenants and conditions, all of which shall be deemed to run with the land and to inure to the benefit and be binding upon the owners and users of the lots located within the Property, their heirs, personal representatives, successors, grantees and assigns: 1. Use of Property. 1.1 No further Subdividing. Except for initial subdivision, no lot, outlot, common area or any other property located within the Property shall be further divided or subdivided nor may any easement or other interest therein less that the whole be conveyed by the owner thereof without the prior written approval of the Board of Directors of the Platte Valley Airpark Hangar Owners Association ("Board of Directors") provided that nothing herein shall be deemed to require the approval of the Board of Directors for the transfer or sale of any lot including improvements thereon to more than one person to be held by them as tenants in common or joint tenants or for the granting of any mortgage or deed of trust. 1.2 Building Restrictions. No building of any kind whatsoever shall be erected or maintained on the Property except for a hangar as herein defined and except as complies with the covenants, conditions and restrictions herein set forth. 970386 1.2.1 Hangar Defined. A hangar as used herein is a building to house and park aircraft of the owners of lots located on the Property. 1.2.2 Restriction on Used Building. No used buildings may be moved into or placed upon the Property without the prior written consent of the Architectural Control Committee. 1.3 Building Standards. To provide guidelines for construction of buildings on the Property, standards are hereby set forth as a,minimum criteria to assure that all structures reasonably conform with other structures on the Property in order to avoid a haphazard appearance or unsafe structures that will detract from the integrity and safety of the facilities located on the Property. 1.3.1 Construction. All hangars shall have exterior walls constructed with metal siding with vertical corrugations. The metal shall be treated with a white protective surface (baked enamel is preferable). Roofs shall also be covered with metal roofing material similar to the siding. Side wall height requirement for 60 X 80 feet and 60 X 100 feet hangar sizes will be 17 feet. Side wall height requirements for 40 X 40 feet and 50 X 50 feet hangar sizes will be 14 feet. 26 gauge roof and walls will be standard with white color with white trim. 1.3.2 Prior Approval. All structures must first be approved by the Architectural Control Committee prior to construction and must be harmonious with the surroundings and conducive to the atmosphere of the facilities located on the Property. All structures are to engineered and fabricated with similar quality in construction and appearance and must meet all requirements of applicable codes and laws. 1.4 Roofs. All roofs shall be of the hip type and a 1 in 12 pitch is required. Gutters and downspouts shall be required. 1.5 Insurance Rates. Nothing shall be done or kept in or on the Property which will increase the rate of insurance for any other owner of assets located on or within the Property including the Platte Valley Airpark Hangar Owners Association (the "Association"); nor shall anything be done or kept in or on the Property which would result in the cancellation of insurance of any other owner or of the Association or which would be in violation of any law. 2 910386 1.6 Antennas. No exterior radio, television antenna or other aerial or antenna shall be erected or maintained on the Property without the prior written approval of the Architectural Control Committee. 2. Signs. No sign of any kind shall be displayed to public view without the prior written approval the Architectural Control Committee. 3. Nuisances. No noxious or offensive activities shall be permitted on the Property nor shall anything be done thereon which constitutes an annoyance or a nuisance to the other owners of lots on the Property. No rubbish or debris of any kind shall be placed or permitted to accumulate upon the Property and no odors shall be permitted to arise therefrom so as to render the Property or any portion thereof unsanitary, unsightly, offensive or detrimental. 4. Temporary Structure. No mobile home or any other structure of a temporary nature may be used for storage or otherwise on the Property. 5. Maintenance of Property. No lot shall be used for storage or trailers, junk, automobiles, trash or scrap materials except for the storage of lumber or other building materials during the course of construction of a hangar. Each lot shall be kept in a sanitary and sightly condition at all times. Weeds shall be kept mowed and the premises of each lot kept in a clean and sanitary condition. 6. Architectural Control Committee. A committee consisting of persons as determined by the Board of Directors is hereby constituted to exercise certain functions as provided in this Declaration. A majority of the committee may designate a representative or representatives to act for the committee. Any vacancies in the committee created by a resignation, death or any other cause shall be filled by the Board of Directors. The members of the committee shall receive no compensation for services rendered. Until changed by the Board of Directors, the initial Architectural Control Committee shall consist of the following: Leonard Adler Marilyn Taylor Kevin T. Kennelly Lloyd L. Land 7. Approval of Plans. No building, fence or other structure shall be erected, placed or altered on any lot on the Property until the building plans, specifications and plot plans thereof have been submitted in writing and approved by the Architectural Control Committee in writing as to the general plan, exterior design and location. Provided, however, such approval shall be considered withdrawn for all structures not completed within twelve 3 970386 (12) months from the date the construction is commenced and upon withdrawal of such approval, all partial construction shall be removed from the Property. 8. Animals. No animals shall be allowed to run at large on the Property and all animals shall be controlled by a lease under the control of a person when not confined within a building on the Property. 9. Rules and Regulations of Board of Directors. The Board of Directors may, from time to time, adopt rules and regulations governing the Property and once adopted by the Board of Directors, such rules and regulations shall be made available to the owners of the Property and thereafter there shall be no violation of such rules and regulations. In the event any owner, guest, lessee or invitee of such owner violates any rules or regulation adopted by the Board of Directors, the Board of Directors may (a) suspend voting rights of the owner; (b) suspend the right of such owner and the right of the guests, lessees or invitees of such owner to use the Property under such conditions as the Board of Directors may specify; (c) cause the violation to be cured and charge the cost thereof to such owner as an assessment; (d) obtain injunctive relief against the continuance of such violation, and (e) all of any number of the foregoing. Before invoking any remedy, the Board of Directors shall give such owner notice and give the owner an opportunity to present any evidence such owner may have except that the Board of Directors may suspend the voting rights of any owner, and the right of use of any owner, his lessees, guests and invitees without notice for any period during which any assessment owed by such owner is past due and unpaid. 10. Drainage. There shall be no interference with the established drainage patterns or within designated drainage easements within the Property unless adequate provision is made for proper drainage and approved by the Architectural Control Committee. 11. Hangar Usage. Usage of all hangars on the Property shall be specifically for aircraft storage only along with any necessary aircraft ground handling equipment associated with said aircraft. Such aircraft must be owned or leased by the owner of a lot on the Property and the aircraft must be kept airworthy. No storage of gasoline, solvents, explosives, flammable paints or other flammables shall be allowed in the hangar. Provided, however, temporary parking is permitted for automobiles owned by the aircraft owner on the ramp area of each specific hangar providing it does not interfere with taxiway access and furthermore parking of automobiles owned by the owner of the hangar is permitted in the hangar while the aircraft customarily kept in such hangar is in use. 4 970386 11.1 Repair. The hangar shall not be used for major repair or overhauling of any aircraft of other equipment. The owner shall not permit any spillage on the Property nor shall allow any maintenance tools or repair equipment to be placed upon areas on the Property not a part of the lot owned by such owner. 11.2 Preventive Maintenance. The following are examples of preventive maintenance services which an owner can perform on the aircraft within the hangar: 1. Interior cleaning 2. Waxing/polishing 3. oil change 4. Tire and wheel replacement 5. Servicing landing gear shock struts 6. Servicing wheel bearings 7. Replacing defective safety wire and cotter keys 8. Lubrication not requiring disassembly of complex parts 9. Servicing hydraulic fluid reservoirs 10. Minor upholstery and decorative panel repairs 11. Replacing side windows 12. Replacing seat belts 13. Replacing seat parts 14. Troubleshooting electrical/avionics systems 15. Replacing bulbs and lenses 16. Replacing/cleaning spark plugs 17. Annual maintenance and inspection 12. Hangar Doors. Hangar doors shall be kept closed when the hangar premises are not occupied. 13. Appearance of Hangar. The owner shall not paint, remove, deface, modify, bend, drill or otherwise alter or modify any part of the hangar to a condition other than that originally approved by the Architectural Control Committee without the prior written permission of the Architectural Control Committee. 14. Compliance with Law. The owner of any lot on the Property shall comply with all laws, ordinances and directives of any governmental agency having jurisdiction over the Property and operation of the airport on the Property. 15. Parking of Aircraft. The owner of any lot on the Property shall not park or leave aircraft or other equipment or vehicles on the taxiways or anyplace on the Property which interferes with the movement of traffic or obstructs access to other areas of the Property. 16. Utilities. The owner of any lot on the Property shall pay for all charges and fees for providing utility service to the lot of such owner. No portable utility or heating devices shall be 5 970386 used on the Property unless authorized in writing by the Architectural Control Committee. 17. No Commercial Activity. The Property shall not be used for any commercial aircraft activity. 18. Fire Protection. A fire extinguisher as approved by the Architectural Control Committee shall be kept within each hangar on the Property as a safety measure to assist in fire protection. 19. Damage to Improvements. In the event improvements on the Property are damaged by the owner of any lot on the Property, such owner shall repair, rebuild or remove the damaged improvements immediately and failure to do so shall constitute a violation of this Declaration. 20. No Lease Allowed. The owner of any lot on the Property shall not lease any portion of the Property including any right to occupy or use a hangar on the Property without the prior written consent of the Board of Directors. 21. Property Taxes. The owner of any lot on the Property shall be responsible for payment of the property taxes assessed on such lot. 22. Insurance. The owner of a lot on the Property shall maintain and keep in force public liability insurance to insure against liability arising out of use of the Property. Such policy shall be in an amount not less than $250,000 per occurrence. Each owner shall provide the Board of Directors with a certificate of insurance from the company issuing such policy. The Association shall be named as an additional insured on said insurance policy. Furthermore, the owner of each hangar shall provide casualty insurance in an amount approved by the Board of Directors and such owner shall provide the Board of Directors with a certificate of insurance from the company issuing such policy. 23. Indemnification. The owner of any lot on the Property acknowledges that the aircraft and the property of such owner shall be located or stored on the Property, including in the hangar, at such owner's risk. Such owner covenants by purchase of the lot on the Property that it will not hold the Association or any of its agents, employees or members responsible for any loss occasioned by fire, theft, rain, windstorm or hail nor for loss to any aircraft, automobile, or personal property of such owner in the absence of gross neglect or willful or wanton misconduct by the Association, its agents, employees or members. Furthermore, the owner of a lot on the Property agrees to indemnify, defend and save the Association, its agents, employees and members harmless from and against any and all liability or loss resulting from any claim including legal fees arising directly or indirectly out of the activities in regards to the Property or by reason of any act or 6 970386 omission of such owner, its agents, employees, guests or invitees in regards to the Property. 24. Membership in Platte Valley Hangar Owners Association. Each owner of any lot located within the Property shall be a member of the Platte Valley Airpark Hangar Owners Association, a non- profit corporation organized for the development, care and maintenance of the Property. Each member shall comply with the Articles, By -Laws, regulations and decisions of the said Association and with the provisions of this Declaration of Covenants, Conditions and Restrictions on the Property. 25. Rights of Lot Owner. Each lot owner within the Property shall have the right to permanent ingress and egress to the common areas of the Property and to the taxiways and runways on the Property. The common areas shall be owned, operated and maintained by the Association in a good and proper manner including mowing and removal of weeds and removal of snow for reasonable access to the Property. 26. Assessments. 26.1 Levy of Assessments. The Association acting by and through its Board of Directors shall have the authority to levy assessments against each lot and the owner(s) thereof. Such assessment shall be uniform against each lot in Area B of the Airpark PUD. The fee owner shall be personally liable for any assessment and the same shall become a lien against each such lot and all improvements thereon. There shall be no assessment for an outlot or for any property owned by the Association. The lien shall include the amount of the assessment, plus interest, late payment fees, legal fees and costs as determined by the Board of Directors of the Association. The assessment shall be due and payable to the Association at such time and in such installments as is determined by the Board of Directors of the Association. The assessment shall be for the purpose of maintaining, improving, repairing and operating the areas of the Property under the jurisdiction of the Association and the taxiways and runways on the Property. A maintenance fund and reserve fund shall be established for such purposes. 26.2. Amount of Assessment. The amount of the assessment shall be set from time to time as required by the Association for the purposes herein authorized. 27. Enforcement of Assessments. The amount of any delinquent assessment assessed against any property and its owner, including any late payment charge attributable thereto, plus interest on such assessment at a rate set by the Board of Directors of the Association plus costs of collecting the same including reasonable attorney's fees shall be a lien upon such lot and the improvements thereon. Such lien shall have all priority not prohibited by law 7 970386 and may be foreclosed in the same manner as is provided in the laws of Colorado for the foreclosure of mortgages on real property. 28. Time Limit for Building Hangar. The owner of any lot within the Property shall build a hangar on such lot within two (2) years after the purchase of the same in accord with the specifications and approvals as required pursuant to this Declaration. The ownership of each lot within the Property shall be deemed held on condition that a hangar is so constructed thereon within the said two (2) years and failure to construct and complete a hangar thereon as herein required shall entitle the Association to exercise the power and authority to transfer ownership of said lot with the incomplete structure thereon to the Association if, after giving sixty (60) days advance written notice to such owner in default, the default is not cured. The power of attorney to make such transfer of ownership as herein provided is, by this Declaration, granted by the owner of each lot to the Association acting by and through its Board of Directors. 29. Covenants Run with Property. This Declaration of Covenants, Conditions and Restrictions shall run with the Property and shall bind all parties and all persons claiming ownership in the Property for a period of twenty (20) years after recording of the same in the records of the Clerk and Recorder of Weld County, Colorado and at that time this Declaration shall automatically be extended for successive five (5) year periods, unless by a vote of 75% of the votes eligible to be cast, said Declaration is changed in whole or in part and such change duly recorded. 30. Property Owner Enforcement. Any property owner holding a recorded interest in the Property and/or the Association may initiate a proceeding at law or in equity against any party or persons violating or attempting to violate any covenant, condition or restriction of this Declaration in order to restrain violations thereof and/or to recover damages for such violation. The violator(s) shall be subject to a decree of specific performance and payment of reasonable attorney's fees and costs incurred in any legal action necessary to enforce this Declaration. 31. Severability. Invalidation of any of the terms or provisions of this Declaration shall in no way affect any of the other provisions which shall remain in full force and effect. 32. Binding Effect. This Declaration shall be binding upon and shall inure to the benefit of the Declarant, the Association and to the owners of all lots within the Property and shall further be binding upon and inure to the benefit of the heirs, personal representatives, grantees, successors and assigns of the owners of lots within the Property, the Declarant and the Association. 8 970385 DATED this ATTEST: day of , 1996. PLATTE VALLEY AIRPARK, LTD. a Colorado Limited Partnership BY: COLORADO AIRPARK ASSOCIATES, INC. a Colorado corporation, General Partner Marilyn Taylor, President Secretary STATE OF COLORADO COUNTY OF ADAMS SS. The foregoing instrument was acknowledged before me this day of , 1996 by Marilyn Taylor as President and as Secretary of Colorado Airpark Associates, Inc., a Colorado corporation, as General Partner of Platte Valley Airpark, Ltd., a Colorado Limited Partnership. Notary Public My commission expires: 9 970386 12-04-96 11:51 2k 3036597265 M Taylor O 001 oat \v/rai1ilicr4p7 vi1,,[ 0c7c Poat-It'- unind tax transmittal memo 7671 # of p■gee p lb From Ce. GW G naril Phone Fan "770 — 1a -G3/' huh `'Road 39 * Fort Lupton, Co!or»do 80621 4 (30-3) 65t=7265 ohn Schurer Ica Of The State Engineer lion Of Water Resources 13 Sherman Street/Room 818 Yer, CO 80203 Mr- Schiffer: k vau for taking the time to folk with me this morning regarding Platte Valley Alrpark PUD,. number S-409. Mated, our current water usage for commercial well permit #41681-P is minimal with e to one manager residence, one mobile home rental and the airport office which gins two restroom facilities with one toilet and sink in each. Customer usage for these m facilities is also minimal with approximately 2-4 customers on a daily basis. Both the er residence!and mobile home have one occupant each. oposed hangar development would not affect the current usage as we would not be ng water for the hangar tenants. in addition, we do not allow aircraft washing on the W property. The new hangars would be used mainly for aircraft storage, therefore, the office activity would be increased by one or two customers of the most. We would, not the proposed maximum pumping rate of 14 gallons per minute, and the requested e annual amount of ground water to be withdrawn of 3 acre-feet. you again. I will advise Weld County Planning that you will be responding for their ft for comments on our proposed PUD in the near fixture. rely. 2; Taylor nt d Flodges, V$'eld County Planning Department 12/04/96 12:01 Weld County Planning'Dept. DEC 0 4 1996 celyt ... 970385 TX/RX N0.5679 P.001 • I OFFICE OF THE STATE ENGINEERcotar 115 PPann ng Dept. Division of Water Resources Department of Natural Resources2 ry 1313 Sherman Street, Room 818 Dc ` 1996 Denver, Colorado 80203 Phone (303) 866-3581 FAX (303) 866-3589 STATE OF COLORADO December 16, 1996 Mr. Todd A. Hodges Weld County Planning Department 915 10th Street Greeley, CO 80631 Re: Platte Valley Airpark PUD Sec 30 & 31, T2N, R65W, 6TH PM W. Division 1, W. District 2 Dear Mr. Hodges: Roy Romer Governor lames S. Lochhead Executive Director Hal D. Simpson State Engineer We previously commented on this proposal to develop 227.5 acres of a 240 acre parcel into an airpark, in our letter of October 17, 1996. In that letter we stated that no information was provided on the projected water requirements, therefore we could not comment on the potential for injury to existing water rights or the adequacy of the proposed water supply. The applicant provided information that water use will be limited to serving two existing single family dwellings and the airport office. The airport office has two restrooms with one toilet and sink in each. No washing of airplanes will be allowed at the airport. In a phone conversation, the applicant indicated that there is no irrigation at the site. The applicant has an on site well, completed in the non -tributary Laramie Fox -Hills aquifer, with permit No. 41681-F. A well test determined the well's yield to be 14 gallons per minute. One permit condition requires that only 98 percent of the water diverted may be consumptively used. Based on the applicants stated uses the annual water requirements are not expected to exceed the 3 acre-feet available. Based on the new information provided, pursuant to Section 30-28-136(1)(h)(I), C.R.S., the State Engineer's Office offers the opinion that the proposed water supply will not cause material injury to decreed water rights, and the supply is expected to be adequate except as noted in the following paragraph. Water in the Denver Basin Aquifers is allocated based on a 100 year aquifer life under the provisions of Section 37-90-137(4)(b)(1), C.R.S. For planning purposes the county should be aware that the economic life of a water supply based on wells in a given Denver Basin aquifer may be less than 100 years due to anticipated water level declines. Furthermore, the water supply plan should not rely solely upon non-renewable aquifers. Alternative renewable water resources should be acquired and incorporated in a permanent water supply plan that provides future generations with a water supply. 970393 Mr. Todd A. Hodges Platte Valley Airpark PUD December 16, 1996 If you have any questions in this matter, please contact John Schurer of this office. Sincerely, Steve Lautenschlager Assistant State Engineer SPL/JS cc: Richard Stenzel, Division Engineer Water Supply Branch plattev 970386 12-04-96 06:51 2 3036597265 M Taylor 8 001 sornapi Ei JV \' /C 1f 11 04Yv� / V1I l { D®rPCi as t11 �..._�.� ;‘,"Veld County Road 39 * Fort Lupton, Colorado 80621 ,* (303) 659-7265 ember 4, 1998 Todd Hodges Marilyn Taylor Case Numbers: Z501 and S-409 arding concerns for access from Patina Oil & Gas Corporation for gas wells located on e Valley Airpark, please note the attached (original) 'OIL AND GAS LEASE'. outlining. royal of all access routes, drill sites and flow line routes on this acreage. This (ease was finally prepared by Barrett Energy Company, and subsequently transferred to Snyder Oil rrnrntinn nnri Pntinn Oil R. Clne Cnrpnmtinn..A■ wept maniinnerl in the Planning tmmission meeting on December a, 1996, there is curreniiy a private access road used by Mina at this time. nk you. lyn Acklam Associates, Attn: Mike Weld County Planning Dept DEC 0 4 1996 RECEIVED 12/04/96 07:02 970386 TX/RX NO.5668 P.001 • 12-04-96 06:53 B 3036597265 M Taylor S 002 4flvrrld.tYvrf,i fteY l \71� • AND • LEASE, e. h Colo. 1'•.;; 1 GE/. a L' lal(yatkNT, Emend Into WIN thedery al Maw Andrew J Haller a� .Ito at) Cornelia M Haller his wife 20520 Weld County Rd 20, Ft Lupton, Co 80621 • „_._Amsbquy�i ,__qU�. b hereinafter called leapt, �n._$t,_�.akewood, Co lwr.ineft,,..ttwharnn.rw-W.... hal hama✓. rot end in nunalele..u..., et the no... T•r1 .. -� ts • names to Let v.rrurmYO by the lean, nee thin day ervnlad, leased, and let end Dollen in hand add end e. the and and aernenc- the harne the nominate. described land. alts with the mint to unitary one lean at l toper othrdoes other, oil e great, pale, let Maw .the the ande cerebra thereby a, hexlinefter provided, fin the env geological, eop with other f end pi leases u to h,alor drilling, and the drilling, mining. and operate for, purpose ann at carrying k WI, en, c. geophysical , and other easolne * ash. other heir respective continuant vapors, .nth for constructinga'r producing. laying end miens 11 e1 ah. en, tea, ., staring , buntline Wryer t. eyle.io trd telenliOne abler bey etrucltnvt {hereon n ry .i o u.sarent in; the Cas n,,,i,j nOpertatlon of 1pdd land �ilane or conleinf(y with nilahboofing Wade, to eve, wee ewe or, end manufacture all of ouch substances, add for hoWing and boarding employ...mist trees of land wish atm reversionary atiesituated in use Gaunt, of ._ Ws,j t•) Coloii rado and described cc fellow.; 5}, 60 aJ. /4/6/-4 reship 2 North Ran.e 65 West of the 6th P.M„ ion 30 ant 31, Part as described in Deed recorded under reception. ber 1775637, Weld County. Colorado records ;withstanding anything to the contrary contained in this lease, Lessor t approve all access routes drill sites and flow line routes on this sage, such approval shall not be unreasonably withelda Said lands ore rently operated as an airport and containing _ 237 a 32 agree mitre or ler. h agroad Leila Lille lone Mali ...Minn Ot full Ima. for a tern; ur Four ( 4 filer of tttetn, is produced horn mid lend (Or from )ends with which wild land b yetdr from tale date, and as logy eee:ter se oil "gas.idereuon of the premises Me mid lessee oovenacta and amen: eOnmlldabd) or the pnamiwg are being WvaiYPeel or oparetad. Edgedtfrom to ithe leaved pr miee credit of nahee of coet, In the pipe line to which lessee may ow Mao( hiswe W, the *dual one•elYht (i fe) pot of all oil Lieu ehpil n,o t fey WAY MIMIC C . royally on sou marketed Ie m,oge o! IN Where gas only Is !cum!. _,µus CIAO pi f ps6.e.df if wad if marketed rr f b, -- the -firemen' received by the lease froletfto"uk Of eedo[lt g marina ern ny ae win.well The Luce hth pay the lemon (a) pie• welt, computed at the unwilling meth., prier of the dad gal, produced from any try o0 well; Died by at off or M eel P at ntere me or and oil the leased premlys by the leans for ntther hay' ill well toad Wed by Mat off the learn • nitres 11�Yth, risk end expellee of IWi Winn gas hum any plowmen add teed eked the development Wens and OM me pre etpai d. rm..... ecaMai. the• a nitrite r,Mmina n,....,. .e,,.... tone thereto. [\. well w teed lee wen. .d 4eIJe twine me PTumipar chestnut located on Maned oeat r, Ms front a well or wale, COMM. of producing was only. h. n..r eon ...awe tat a pentad or one year, lenge Wog to the such ass owes a. ennead in paragraph (8) hereof, payable annually on the anniversary date et this I. robue t or stmt. d o earn mberea two hereof. le oat sdbl err u•ed, end while aid ninon, I. en paid or tendered this Miss shall be held as a producing m. rid of seen property under apareti°ns for the darns of a well for Oil or ges are not eommonoed on said land on or bet[.• the -8_. doe.; Mir Kate 1..re rhea t.m.anete e. to bola parllee, toting the lessee shall on or before said date pay or tender to the issser or for the leaser's credit in t Bank t3 Trust ninth et Brian on Co u le:00es agent end shell cooisaue-erabe -depoeltoty-ui-my end a�liudiru payable Colorado under, or diem o nma, wbleq liana and 1n this lease reathdless or M1[n ' rpivya l en dip on mad gas yr /e. the rentals to accrue hereunder, tile cant n1 Two hundred 'thin v awajw is Zairsi cri aver the paving! AI_debarring.be c_utiwenc"_r`cptlie -ware ofu.Qdi atplfail fan a rparad Ot One yen. Inlik e t�„an0 r and open bite ..._. __ !mere re phi' (tirdmunneoaaltt of uperai tow forth Willow or either he d.,f. r..J i , jibe pedvde eweae frelri All' paymenNDr tendare MAY Ise Wow. or any emienee therein, delivered 04 or before the rental Paying bank, and It b underetood and agreed dhatlhe oonntleration first recited herein Um down Dtiudate, ,r uovv,,,ri direct NkeentpMmitleg er granted W en said farce metal h payable es Mermaid. but else the taeeee a potion of ex/ending that period am aforesaid and any and alt other maim ' may at any btne meant* and ,deliver to Lessor, or elms of record a releas!ev manse. e... _ Mint end thereby Pat ndu, MI. e. . t motAte, yr puritans aka be toYend of all abliptlona a to eshe acreage ausrendgtedW� pentium payable Manahan shell be reduced In the proportion that the acrea,e lowered hereon la reduced by end release or relenre. hid the fltrt well drilled on the above described land ha a An. bob, Men, end in wet event, if a second well N not commanded on said land emomhe hen eapHa%vn of doe fast rental period for which rental has been paid, this Nye MIMl terminate as tit hen pantye. wW... We 're the exultation of said twelve month* shall resume the payment of e. lu the .arena wmeuut end in the amp mssmner as hetdnWfen le le areas that •.. u.. the ..w.mpdm, of she a.rm.ne of rentale, as ,toes wueW.O, gnat the tint preceding la and the erect tnnten Mall continue In force gust as though theta had beat no Interruption In the renallppayatenMhwoL governing the it besot twsc a lege Interest In the above desuribed land ban the maim, end Undivnted tee simple n the roman and ovidnd ehll be paid the teen only /n thesole estate Wor versa which hot ver{ it, to tou at In wnole anti noatr/dedtherein. wevn, area rental shall tit neat have tithe liIle e, fr g .rtes y e, wit reversion ocatlra to cover {be daunt nst r snort bed. t en uqshelli have the right . u.e, fr. El mot, ea., tell and water Wand on said netltt ra well g a1satir. the ter.., ot.e..e le. pip.• thaw e.e...,. d lee tot ntIts ewmt oar Mane . wet.. lea t yaw. mnu- rv� well clasp -Ls drilled newer than nova b.. plow *epee and i• d mt ter re without rltta.l tla. epw the le n .rnrwa *vent ., any Unto during. a to lea ill I ^r 'e'• • en se,. f rbmin. heetee. bond -Min n - M tenant t er the otuse. r+ub or after the move en toeing. Chia lase i rem up all . coniplet ..o m bent✓ m a d dry Ma a it. upon the elaband abandonment e, including the right a. . to their or i alone. oral nay.. upon the remove of e al Ines as s hate err i, time. enmmtl well, O (elates the roman hereto Ir to ntgiod (uW the privilege of t aei maiming in i.h to t ep preW y allowed), oy withine rsaacnsbL awtf are earner party Murat (wleaing in whole or In p ir,, leuN es, exec hi re administrators. 4111 the ty eunneewn, sad manna, lMai abad tW with era. r ownership indmland Or in the rentals, or royalty.* or any ;hob el es., until It ha been fu the orllnal recorded Ineletment el a certified Cully f tau ul of spy dee..ra ewe or also urn ,ate Here.., ay certified copy of the preaeedinee eeeeed ngj en ed.itrdep.te• ter taw mime of env deeealed OWner. whichever h alcPrePM.ta. teeedrrt' waih ell Ongynal refloated instrument. of *eb- oerhf.ud vaplas Wcrenr neeaewry in showing a n, name whale l Jab bent to l..pa so the run InNre,l °limed( and MI adoan _ e.tv he.vunoer oatnre receipt of u documents shah be btndtne ..,_ epsr•- -- or of lunar, on any wwca or iodine{ sxLya, grantee, daNree, Ydminletretot, hereby served that In the event Ml, lease shall be euetgned am to a part or ea to aerie-.( the above described land end the homer or awn*, rl or inflation. meet default it. the par inner or tile wopvttionste part of the r.nt due moan ream se them. Ptah defamt shall net Operate to net ttenre Maidenwarrants and oven a Part or Add lend noon which the lee.av .r env anlgnay hereof Nil mel a due payment Of said rentals. agrees to defend the titlo to the land herein described and siren that the lessee, at fig option, snap Day and dlae of in part any )axes, mortgages, Of other liens seining, levied, or eeerd On or spinet the above described tends end, in event It morales' :shed in auhrosated to the tight* of any holder or holden therenr and may rulmbuee dwell by applying to the dlsnttarge of any suet, snort - .11m1, any royalty Ot ranting ycrUing hereunder. Wing anything in this lease Contained to the contrary, it le expressly agreed that if lame flail commence nperetiane roe 'Wiling at Vie lots., t in tain.. Iola lease sluts •, , le fern.. end h. I.reg. wart ovhuwu9 w• long e e suck operation, mg pMYd4id and. If pxdule n ions production auntnuas. Itin the hrlmery term of title tepee. produ.u„e no tn. hewed premien Nal wen Lim ear cause, this NW Man not harmleaN pmvNed a drilling of a well shell he commenced before or as the next 'means rem & paying date; gat provided lane* begins or Yerr•mea the pay. by the mimetic and amount hereinbefere intoned, If, after the axoirelbW of the prknary ..e !hit ._� et. ' dew w .. m e from luny •met., ii•ie lease WWII nut terminate preened Inane returnee operation, for re -Work or drillingg - a"iig Sinn' - - - tosnation sod this Wage shall remain in force during the prOyoutlOn of such operations and, If nrndueti erinvite vith well n. Men es to (d p) unmet. whowr., Men w long r ee b hern.o, p..,, theyN, et no isogon, at any time end (runs time to tams, to peel or unitize all or any part Or parte of the shove tie - ID other land, leer., or leaves In the Immudlwl.w vicinity Onion. malt eoellea W be lr.to unite nut neareding the en tkintw t else Meet en ey Mw 4,,ih od under laws ode*, or resident -me in force at tad time of loch poalIng or ltnititetiem Provided• h9WeVet• that liken- Minn mat 'psni um hf not more then ton Aare,. If Snob ea .. t...nraseary in aror to conform her vw..erddp women[ one Or lease tiny beim, ahali ;Mr Ye to each desired unit, by eteoudna and retarding en /Wtrument Identifying the mailed area, Any wall drilled or (Maranons cun- t of each such unit chap be considered a well drilled nr operations eonduated Under Shia lace, and titers Men be swanned to the portion rated tend Included in any such unit such proportion of the antual moduelion from. all wanton smith unit as laamr'e interest, If any, in touted on an acreage tine. henry to the entire tertian of snub trait, And a te undygNOd and *Reed that M. orndnetlan .e elioeated d fur dl Puntw.,e, including the permed[ or taint."t royalty, to be the ostler. production from the ponies Of the about d.eciibed eon unit in ate Mme mender ea though produced from the above described land under• the teem. 12/04/96 07:02 TX/RX NO.5668 P.002 970286 .0 .va uo.v.a. rwinnru:w aria an nr... v.on.._..,, yxend m, and b. bpudtda U.. teach of tttu yarttet who Mae tine bw, yaps4laae Of w4nOf b earned above end eWtrate a of whether It b aligned by any of th✓ other oaetl.a h...,I. h.n,.d .. t........ rt....aaaa tw.r steno.. In an. sumo •114.• ••• uo. ..aatna. 'p8 W I U'.IIKOR, we don the day and nay flrft above wylttun. tiw� Tea er a Cornelia M Roller 12/04/96 07:02 970386 TX/RX NO.5668 P.002 ■ Security Title Guaranty Co. February 12, 1997 Ref: Docket No. 97-03 Platte Valley Airpark c/o Marilyn Taylor. 7505 Weld County Road 39 Fort Lupton, CO 80621 Dear Marilyn: Security Title Guaran_y Company will agree to act as Escrow Agent for the completion of certain improvements at Platte Valley Airpark. This is in reference to the request of zoning change from Agricultural to PUD on the parcel located in Sections 30 and 31, Township 2 North, Range 65 West of the 6th p.m., Weld County, Colorado. Security Title will act as Escrow Agent only upon agreement by Security Title, the owners of Platte Valley Airpark and Weld County concerning properly executed escrow agreements, disbursement procedures and fees for such service. Sincerely, Jim Clement Branch Manager JC/kas 910386 720 EAST BRIDGE STREET • BRIGHTON, CO 80601 • (303) 659-8271 • FAX (303) 659-8846 A/q CKLAM A SSOCIATES, INC. SURVEYING - ENGINEERING PLATTE VALLEY AIRPARK PLANNED UNIT DEVELOPMENT DRAINAGE STUDY PREPARED FOR: PLATTE VALLEY AIRPARK 7507 W.C.R. 39 - FT. LUPTON, COLORADO 80601 PROJECT NO. 5572 SEPT. 12, 1996 1001 E. BRIDGE ST • P.O. BOX 795 • BRIGHTON, COLORADO 80601 TELEPHONE (303) 659-8546 970386 TABLE OF CONTENTS DRAINAGE STUDY STUDY INTENT PROJECT DESCRIPTION BASIN DESCRIPTION HISTORIC & DEVELOPED DRAINAGE FACILITY DESIGN CONCLUSION REFERENCES CERTIFICATION EXHIBIT A SOILS CLASSIFICATION EXHIBIT B HYDROLOGIC CALCULATIONS NOTE: This Drainage Study was originally submitted September 16, 1996 as part of the Platte Valley Airpark Planned Unit Development Application Materials packet. 970386 STUDY INTENT: This report was prepared to look at the drainage of a proposed building site in the South East one -quarter of Section 31, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado. It is the intent of this report -to provide an adequate means of storm water management for the proposed improvements as shown on the attached map. PROJECT DESCRIPTION: The project site is in the South East one -quarter of Section 31, Township 2 North, Range 65 West of the 6th Principal Meridian, Weld County, Colorado. The site contains 12.58 acres (547,984 FT2 ) and is presently vacant. The site is surrounded by farm land to the north and vacant grass covered fields to the West and- South. The East side of the project is adjacent to the current airport facilities. (see attached map) The proposed development is to consist of 37 lots suitable for airplane hangers and the surrounding asphalt taxi -ways as shown on the attached map. All runoff shall be directed to the detention pond by use of roof downspouts, , culverts, conveyance channels and asphalt areas that are to be sloped to drain towards the detention pond. The project is entirely within the Olney fine sandy loam series. This series consists of deep, well drained soils that formed in material weathered from loamy alluvium. The soil has a hydraulic soil classification of `B". DRAINAGE BASINS: HISTORIC: The existing airport has been designated as drainage basin A and does comply with the CDPS and has been approved by the Colorado Division of Aeronautics. This drainage basin does not provide any runoff discharge onto the proposed development site. The drainage characteristics of drainage basin A will not be affected by any of the improvements shown on the attached map. hence drainage basin A is not a concern of this report. DEVELOPED: The developed area (12.58 acres) has been designated as drainage basins B1 (7.3 acres) and B2 (5.28 acres). There is no offsite runoff that will be effecting drainage basins B1 and B2 . This is do to existing berms, on the property lines, that surround basin A and basins B1 and B2 on the North and East sides. Therefore, offsite runoff will not be a factor in the storm water management facilities design. 970366 DRAINAGE FACILITY DESIGN: The watersheds under consideration are less than 90 acres in size. Therefore, the rational method in conjunction with the FAA design methods for a detention system have been employed for the analysis of this site. See the attached map for complete information regarding location and size of all drainage facilities, as well as exhibit B for all hydraulic calculations. All runoff from basin B1 will be concentrated at design point 1. Storm water runoff will be conveyed along the east and southerly sides of basin B1 by conveyance channel 1. Storm water runoff will reach conveyance channel 1 primarily by sheet flow along the asphalt taxi -ways. Conveyance channel 1 has been sized to accommodate both the 10 yr design flows (13.14 cfs) and the 100 (28.47 cfs) year major storm flows. At design point 1, runoff will be conveyed under an existing asphalt taxi -way and into the detention pond by 2 - 15"x 21" elliptical C.M.P. culverts designed to convey the 10 year flows. The 100 year flow will overtop the taxi -way and flow directly into the detention pond. All runoff from basin B� will flow directly into the detention pond facility by sheet flow along the proposed asphalt taxi -ways. The detention pond facility will need a volume of 35476 cubic feet to detain the 10 year storm with a corresponding release rate of 2.89 cfs and a volume of 39174 cubic feet to detain the 100 year storm with a corresponding release rate of 10.69 cfs. The discharge, at the above mentioned allowable release rates, from the detention pond will be carried by conveyance channel 2 into the borrow ditch along Weld county Road 39. CONCLUSION: The proposed drainage facilities are designed to comply with all standards and specifications set forth for storm water management by Weld County Storm Drainage Design and Technical Criteria policies and the Urban Storm Drainage Criteria manuals (latest revisions). 970386 REFERENCES 1) Urban Drainage Criteria Manual with latest revisions, Urban Drainage and Flooding Control District, Vol. 1-3 2) Flowmaster, Heastad Methods, Inc. 1990 970386 CERTIFICATION "I hereby certify that this report for the Final Drainage Design for Airpark Park P.U.D. was prepared by me (or under my direct supervision) in accordance with the provisions of Weld County Storm Drainage Design and Technical Criteria policies and the Urban Drainage Criteria for the owners thereof. I understand that the County of Weld does not and will not assume liability for drainage facilities designed by others". Bruce F. Erickson, P.E. Registered Professional Engineer State of Colorado - No. 30752 970386 EXHIBIT A SOIL CLASSIFICATION 970386 ACKLAM ASSOCIATES, INC. 1 e SURVEYING - ENGINEERING Soils classification for Airpark P.U.D. in Sections 30 and 31, Township 2 North, Range 65 West of the 6th Principiai Meridian. 44 - Olney fine sandy 5 - Olney fine sandy 69 - Valent sand, 0 to 70 - Valent sand, 3 to loam. to 3 percent SippeS loam. 3 to 5 percent slopes 3 percent slopes 9 percent slopes 97038G HIGHWAY 52 1001 E. BRIDGE ST • P.O. BOX 795 • BRIGHTON, COLORADO 80601 TELEPHONE (303) 659-8546 Olney series The Olney series consists of deep, well drained soils that formed in alluvium. Olney soils are on plains. Slopes are 0 to 5 percent. Olney soils are similar to the Fort Collins and Vona soils and are near the Kim, Nelson. Otero. and Thedalund soils. Fon Collins soils are less than 35 percent fine and coarser sand in the B horizon. Vona soils are less than 18 percent clay in the B horizon. Nelson and Thedaiund soils have sandstone and shale between 20 and 40 inches. Typical pedon of Olney fine sandy loam. 0 to 1 percent slopes. 1.320 feet north and 28-1 feet east of southwest corner sec. _28. T. 6 N.. R. 66 W. .4p-0 0 to lb inches: grayish. crown i0Y^ 5/2; -me sanay :oak, dark *r_ydsn brown :10`Y 4/2; moist: weak fine granular structure: slightly hard, very friable: nonc:icareo;.s: mildly alkaline: abrupt smooth oouncary. ..=.-10 to 20 inches: yellowish Drown ,10`"R 5.4) sandy clay loam dark yeiiotdsr crown i 10YR. L11 moist: moderate medium prismatic structure par'ne to moderate fine subangtar blocfr': hard. friable; commor. moderately thick clay ::ins on faces of beds: noncairareous: mildly eilaine. Clear way boundary. _.,dvery —20 to 25 inches: oaie brown ,)0YP. 7(3' p sandy clay lo ^..brown. 10YR 5:3'. moist: moderate coarse prismatic stricture: sugntly hard, yen' friable: some visible lime occuring in fine to medium seams and soft masses: calcareous: moderately alkaline: z aduai smooth boundary. Cca=25 to 60 inches: very pale brown (.l0YR 7/3) fine sandy loampale brown :I0YP, 6731 moist: weak coarse subang ,'_r blocky structure: signtiy nerd. very friable: some visible ime in fine to medium tnreacs and seams; calcareous; moderately alkaline. Thickness of the solum ranges from 17 to 30 inches. Coarse fragments make up as much as 15 percent of the soium. Depth to free carbonates ranges from.. ]0 to 24 inches. The A horizon has hue of 10YR or 2.5Y. value of 5 or 6 dry and 3 to 5 moist. and chroma of 2 or 3. It is fine sandy loam or loamy sand. 'The B2t horizon is commonly sandy clay loambut clay content ranges from IS to 30 percent. Valent series The Valent series consists of deep, excessively drained soils that formed in eoiian deposits. Valent soils are on plains. Slopes are 0 to 5 percent. Valent soils are near the Loup, Boel. Osgood. and Vona soils. Loup and Boel soils are poorly drained. Osgood and Vona soils have a B horizon. Typical pedon of Valent sand, 0 to 3 percent slopes, 2.220 feet north and 132 feet west of southeast corner sec. 8, T. 4 N., R. 62 W. AI -0 to S inches: brown (10YR 5/3) sand dark grayish brown (10YR 4/2) moist: single grained: loose: neutral; clear smooth boundary. C1 —S. to 60 inches: brown (10YR 5/3) sand dark grayish brown (10YR 4/2) moist: single grained; incise; neutral. Coarse fragments make up 0 to 10 percent of the soium and are mainly scattered gravel. Depth to free carbonates is more than 40 inches. The A horizon has hue of 10YR and 2_.5Y. value of 5 or 6 dry and 3 to 5 moist and chrorna of 2 or 3. 970386 44 —Olney loamy sand. 1 to 3 percent slopes. This is a deep, well drained soil on smooth plains at elevations of 4.600 to 5.200 feet. It formed in mixed outwash deposits. included in mapping are some small leveled areas. Typically the surface layer is grayish brown loamy sand about 9 inches thick. The subsoil is yellowish brown and very pale brown sandy clay loam about 15 inches thick. The substratum to a depth of 60 inches is very pale brown. calcareous fine sandy loam. Permeability and available water capacity are moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. In irrigated areas this soil is suited to the crops com- monly grown in the area. Perennial grasses and alfalfa or close grown crops should be grown at least 50 percent of the time. Contour ditches and corrugations car be used in irrigating crops and pasture. Furrows, contour furrow's, and cross slope furrows are suitable for row crops. Sprin- kler irrigation is also desirable. Keeping tillage to a minimum and utilising crop residue help to control ero- sion. Maintaining fertility is important. Crops respond to applications of phosphorus and nitrogen. In.. nonirrigated areas this soil is suited to w+ -inter wheat. barley. and sorghum. Most of the the acreage is planted to winter wheat. The predicted average yield is 20 bushels per acre. The soil is usually summer followed in alternate rears to allow moisture accumulation. Generally precipitation. is toe low for beneficial use of fertilizer. :Stubble mulch farming. strip:rapping. and minimum til- lage are needed to control soil blowing and water erosion. Terracing aise may be needed to control water erosion. The potential native vegetation on this range site is dominated by sand biuestern. sand reedgrass. and blue grama. Needieandtnread. switchgrass. sideoats grama. and western wheatgrass are also prominent. Potential production. ranges from 2.200 pounds per acre in favora- ble years to 1?0C' pounds in unfavorable years. As range condition deteriorates. the sand bluestem, sand reedgras..s. and sv.-itchgrass decrease and blue grama. sand dropseed. and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem.. sand reedgrass, switchg, ass, sideoats grama, blue grama. pubescent wheatgrass, and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock, It can be seeded into a clean, firm sorghum stubble, or it can he drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. Windbreaks and environmental plantings are generally suited to this soil. Soil blowing, the principal hazard in establishing trees and shrubs, can be controlled by cu;- tivating only in the tree row and by leaving a strip of vegetation between the rows. Supplemental irrigatior may be needed a: the time of planting and during dry periods. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, Siberian elm, Russian -olive, and hackberry. The shrubs best suited are skunk -bush sumac. lilac, and Siberi- an peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species car be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- tial and should be included in plans for habitat develop- ment, especially in areas of intensive agriculture. Range- land .wildlife, for example, the pronghorn antelope. can be attracted by developing livestock watering facilities. managing livestock grazing and reseeding where needed. This soil has good potential for urban development. The only limiting feature is the moderately rapid permeability `:n the substratum, which causes a hazard of ground water contamination from sewage lagoons. The loamy sand sur- face layer is a limitation for recreational development. Once established, the lawns, shrubs, and trees grow well. Capability subclass Inc irrigated. IVe noni•rigated: Sandy Plains range site. 970386 45 —Olney loamy sand, 3 to 5 percent slopes. This is a deep. well drained soil on plains at elevations of 4.600 to 5.200 feet. It formed in mixed outwash deposits. Included in mapping are small areas of soils that have sandstone and shale within a depth of 60 inches and some small leveled areas. Typically the surface layer of this Olney soil is grayish brown loamy sand about 7 inches thick. The subsoil is yel- lowish brown and very pale brown sandy clay loam about 14 inches thick. The substratum to a depth of 60 inches is very pale brown, calcareous fine sandy loam. Permeability and available water capacity are moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion ha-nrd if low. In irrigated areas this soil is suited to the crops com- monly grown in the area. Perennial grasses and alfalfa or close grown crops should be grown at least 50 percent of the time. Close grown crops and pasture can he irrigated with contour ditches and. corrugations. Furrows. contour furrows.and cress. .slope furrows are suitable ;or row crops. Sprinkler irrigation is also desirable. Keeping til- lage :o a minimum and ut:iimna crop residue ne:D to con- trol erosion. Maintaining fertility and organic matter con- tent is important. Crops respond to barnyard manure and commercial fertilizer. The potential native vegetation on this range site :, dominated by sand bluestem, sand reedgrass. and biue grama. Needleandth.read. switchgrass. sideuat_ `rama. and western wheatgrass are also prominent. Pcten ial production ranges from 2.200 pounds per acre in favora- ble years to 1.500 pounds in unfavorable years. As range condition deteriorates, the sand bluestem. sand reedgrass. and switchgrass decrease and blue grama, sand dropseed. and sand sage increase. Annual weeds and grasses invade the site as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, switchgrass. sideoats grama, biue grama, pubescent wheatgrass, and crested wheatgrass are suitable for seeding. The grass selected should meet the seasonal requirements of livestock. It can be seeded into clean, firm sorghum stubble, or it can be drilled into a firm prepared seedbed. Seeding early in spring has proven most successful. Windbreaks and environmental plantings are generally suited to this soil. Soil blowing, the principal hazard in establishing trees and shrubs, can be controlled by cul- tivating only in the tree row and by leaving a strip of vegetation between the rows. Supplemental irrigation may be needed at the time of planting and during dry periods. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, Siberian elm, Russian -olive, and hackberry. The shrubs best suited are skunkbush sumac, lilac, and Siberi- an peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species can be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- tial and should be included in plans for habitat develop- ment. especially in areas of intensive agriculture. Range- land wildlife, for example. the pronghorn antelope. can be attracted by developing livestock watering facilities. managing livestock grazing, and reseeding where needed. This soil has good potential for urban development. The only limiting feature is the moderately rapid permeability in the substratum, which causes a hazard of ground water contamination from sewage lagoons. The loamy sand sur- face layer is a limitation for recreational development. Once established, the lawns. shrubs. and trees grow Capability subclass rile irrigated. VI noni rigated: Sandy Plains range site. 970386 69—Valent sand. 0 to 3 percent slopes. This is a deep. excessively drained soil on plains at elevations of 4,650 to 5.100 feet. It formed in eolian deposits. Included in mapping are small areas of soils that have lime within a depth of 40 inches. Typically the surface layer is brown sand about 8 inches thick. The underlying material to a depth of 60 inches is brown sand. Permeability is rapid. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. This soil is suited to limited cropping. Intensive cropping is ha-_2rdous because of erosion. The cropping system should be limited to such close grown crops as al- falfa, wheat. and barley. The soil also is suited to ir- rigated pasture. A suitable cropping system is 3 to 4 years of alfalfa followed by 2 years of corn and small grain and alfalfa seeded with a nurse crop. Closely spaced contour ditches or sprinkers can be used in irrigating close grown crops. Contour furrows or sprin- klers should be used for new crops. Applications of bar- nyard manure and commercial fertilizer help to maintain good production. The potential vegetation is dominated by sand bluestem. sand reedgrass, switchgrass. sideoats grama. needleandthread, little bluestem, and blue grama. Poten- tial production ranges from 2.500 pounds per acre in favorable years to 1.800 pounds in unfavorable years. As range condition deteriorates, the sand bluestem. switchgrass, sand reedgrass, sideoats grama, and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand bluestem, sand reedgrass, indiangrass. switchgrass, sideoats grama, little bluestem, and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder, or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management also can help in improving deteriorated range. Windbreaks and environmental plantings are fairly well suited to this soil. Blowing sand and the moderate availa- ble water capacity are the principal hazards in establish- ing trees and shrubs. The soil is so loose that trees should be planted in shallow furrows, maintaining vegetation between the rows. Supplemental irrigation is needed to insure survival. Trees that are best suited and have good survival are Rocky Mountain juniper, eastern redcedar, ponderosa pine, and Siberian elm. The shrubs best suited are skunkbush sumac, lilac, and Siberian peashrub. Wildlife is an important secondary use of this soil. The cropland areas provide favorable habitat for ring-necked pheasant and mourning dove. Many nongame species car be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is esser- tial and should be included in plans for habitat deveio;- ment. especially in areas of intensive agriculture. Range- land wildlife, for example, the pronghorn antelope, can be attracted by developing livestock watering facilities. managing livestock grazing, and reseeding where needed. This soil has fair potential for urban development. Tr:- pnmar: limiting soil features are the rapid permeabili:' and the susceptibility to soil blowing. Septic tank absor- ;ion fields function properly. but in places the sandy stratum does not properly filter the ieachate. Sewac- lagoons must be sealed. Once established, the lawn,:. shrubs, and trees grow well. Capability subclass l\e i7 rigated, Vie nonirrigated: Deep Sand range site. g7096 TO —V sand, 3 to 9 percent slopes. This is a deep. excessively drained soil on plains at elevations of 4.650 to 5.100 feet. It formed in eolian deposits. Included in mapping are small areas of soils that have lime within a depth of 40 inches. Also included are small areas of soils that have sandstone between 40 and 60 inches. Typically the surface layer of the Valent soil is brown sand about 6 inches thick. The underlying material to a depth of 60 inches is brown sand. Permeability is rapid. Available water capacity is moderate. The effective rooting depth is 60 inches or more. Surface runoff is slow, and the erosion hazard is low. The potential vegetation is dominated by sand bluestem. sand reedgrass, switchgrass, sideoats grama, needleandthread. little bluestem, and blue grama. Poten- tial production ranges from 2,500 pounds per acre in favorable years to 1,300 pounds in unfavorable years. As range condition deteriorates, the sand bluestem, switchgrass. sand reedgrass, sideoats grama. and little bluestem decrease, forage production drops, and sand sage increases. Undesirable weeds and annuals invade and "blowout" conditions can occur as range condition becomes poorer. Management of vegetation on this soil should be based on taking half and leaving half of the total annual produc- tion. Seeding is desirable if the range is in poor condition. Sand 'oluestem. sand reedgrass, indiangrass, switchgrass, side -oats grama. little bluestem, and blue grama are suita- ble for seeding. Because this soil is susceptible to soil blowing, it should be seeded using an interseeder or the seed should be drilled into a firm, clean sorghum stubble. Seeding early in spring has proven most successful. Brush management can also help in improving deteriorated range. Windbreaks and environmental plantings are generally not suited to :his soil. Onsite investigation is needed to determine if plantings are feasible. Wildlife is an important secondary use of this soil. Ran- geland wildlife, for example. the pronghorn antelope, can be attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. This soil has fair potential for urban development. The chief limiting soil features are the rapid permeability and the susceptibility to soil blowing. Septic tank absorption fields function properly. but in places the sandy sub- stratum does not properly filter the leachate. Sewage lagoons must be sealed. Once established. lawns, shrubs. and trees grow well. Capability subclass VIe irrigated, VIe nonirrigated: Deep Sand range site. 970386 EXHIBIT B HYDROLOGIC CALCULATIONS TIME OF CONCENTR AIRPARK P.U.D. 02, 'ALCULATED BY - JFM x U REMARKS DEVELOPED M V1 z a r z m O C' z F � N C' acA > r — z u C Lr INII 2 tel 0 0 Still- 0 V 7, O 910386 STORM DRAINAGE SYSTEM DESIGN RATIONAL'1V2ETHOD PROCEDURE CALCULATED BY - JFM PROJECT - AIRPARK P.U.D. DATE - 9-10-96 DIRECT RUNOFF DESIGN PT, AREA DESIGN Q z , T- (NUN) J L X — c7i Oe cc !y' 10 YEAR WATERSHED "B," 1 B1 7.3 0.6 15.28 4.38 3 13.14 DEVELOPED 100 YEAR WATERSHED "B1'r 1 B1 7.3 0.65 15.28 4.75 6 28.47 DEVELOPED 97035S 10 YEAR DESIGN STORM C= 0.6 A= 12.58 RELEASE 2.89 DURATION DURATION INTENSITY CxA Q RAINFALL RELEASE DETENTION (MIN) (SEC) (IN/HR) CFS 5 300 6 7.548 45.3 13586.4 868.02 12718 10 600 4.6 7.548 34.7 20832.48 1736.04 19096 15 900 3.9 7.548 29.4 26493.48 2604.06 23889 20 1200 3.4 7.548 25.7 30795.84 3472.08 27324 30 1800 2.75 7.548 20.8 37362.6 5208.12 32154 40 2400 2.25 7.548 17.0 40759.2 6944.16 33815 50 3000 1.95 7.548 34.7 44155.8 8680.2 35476 60 3600 1.6 7.548 12.1 43476.48 10416.24 33060 90 5400 1.2 7.548 9.1 48911.04 15624.36 33287 120 7200 1 7.548 7.5 54345.6 20832.48 33513 150 9000 0.88 7.548 6.6 59780.16 26040.6 33740 180 10800 0.8 7.548 6.0 65214.72 31248.72 33966 DETENTION = 35476 FT"3 970386 (10 YR DESIGN I.D.F. CURVE FOR WELD COUNTY COLO (SZTE.7NI) ESISNBT.NI 1 O LP O c 970386 100 YEAR DESIGN STORM C= 0.6 A= 12.58 RELEASE 10.69 DURATION DURATION INTENSITY CxA Q RAINFALL RELEASE DETENTION (MIN) (SEC) (IN/HR) CFS 5 300 9.3 7.548 70.2 21058.92 3207.9 17851 10 600 7.3 7.548 55.1 33060.24 6415.8 26644 15 900 6.4 7.548 48.3 43476.48 96623.7 33853 20 1200 5.5 7.548 41.5 49816.8 12831.6 36985 30 1800 4.3 7.548 32.5 58421.52 19247.4 39174 40 2400 3.5 7.548 26.4 63403.2 25663.2 37740 50 3000 3 7.548 22.6 67932 32079 35853 60 3600 2.7 7.548 20.4 73366.56 38494.8 34872 90 5400 1.85 7.548 14.0 75404.52 57742.2 17662 120 7200 1.45 7.548 10.9 78801.12 76989.6 1812 150 9000 1.2 7.548 9.1 81518.4 96237 -14719 180 10800 1.05 7.548 7.9 85594.32 115484.4 -29890 DETENTION = 39174 FT^3 970386 O _ co O O r -I COUNTY COLORADO FOR WELD C 1/4.0 U) C (Sffi3NI) x3LIBNS.LNI O C c 970386 CONVEYANCE CHANNEL 1 Worksheet for Triangular Channel Project Description Project File Worksheet Flow Element Method Solve For c:lhaestad\fmw\airpark.fm2 CONVEYANCE CHANNEL 2 Triangular Channel Manning's Formula Discharge Input Data Mannings Coefficient Channel Slope Depth Left Side Slope Right Side Slope 0.030 0.5000 % 2.00 ft 3.000000 H : V 3.000000 H : V Results Discharge Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow is subcritical. 40.58 cfs 12.00 ft2 12.65 ft 12.00 ft 1.63 ft 0.015073 ft/ft 3.38 fi/s 0.18 ft 2.18 ft 0.60 Col10/96 02:40:08 PM iason Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (4176) 7M-1666 Page 1 of 1 FlowMaster v5.10 970386 Curve Plotted Curves for Triangular Channel Discharge (cfs) Project Description Project File Worksheet Flow Element Method Solve For c:lhaestadtfmwlairpark.fm2 CONVEYANCE CHANNEL 2 Triangular Channel Manning's Formula Discharge Constant Data Mannings Coefficient Depth Left Side Slope Right Side Slope 0.030 2.00 ft 3.000000 H : V 3.000000 H : V Input Data Channel Slope Minimum Maximum Increment 0.1000 3.0000 0.1000 % Discharge vs Channel Slope 100.0 90.0 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 00 09/10/96 02:39:10 PM 05 10 15 2.0 Channel Slope %) 25 jason Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755-1666 30 35 FlowMaster v5.10 Page 1 of 1 970386 CONVEYANCE CHANNEL 2 Worksheet for Triangular Channel Project Description Project File Worksheet Flow Element Method Solve For c:\haestad\fmw\airpark.fm2 CONVEYANCE CHANNEL 2 Triangular Channel Manning's Formula Discharge Input Data Mannings Coefficient Channel Slope Depth Left Side Slope Right Side Slope 0.030 0.5000 % 1.50 ft 3.000000 H : V 3.000000 H : V Results Discharge Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow is subcritical. 18.84 cfs 6.75 f2 9.49 ft 9.00 ft 1.20 ft 0.016697 ft/ft 2.79 ft/s 0.12 ft 1.62 ft 0.57 CG/10/96 02:33:03 PM jason Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 66706 (203) 755-1666 FlowMaster v5.10 Page 1 of 1 970386 Curve Plotted Curves for Triangular Channel Project Description 50.0 45.0 40.0 35.0 30.0 15 25.0 20.0 15.0 10.0 Project File Worksheet Flow Element Method Solve For c:lhaestad\fmwlairpark.fm2 CONVEYANCE CHANNEL 2 Triangular Channel Manning's Formula Discharge Constant Data Mannings Coefficient "Depth Left Side Slope Right Side Slope 0.030 1.50 ft 3.000000 H : V 3.000000 H : V Input Data Minimum Maximum Increment Channel Slope 0.1000 3.0000 0.1000 % Discharge vs Channel Slope 5.0 0.0 0.5 1.0 1.5 2.0 Channel Slope (%) 09/10/96 02:23:55 PM 2.5 jason Haestad Methods. Inc. 37 Brookside Road Waterbury, CT 06708 (203) 71M-1655 3.0 3.5 FlowMaster v55.10 Page 1 of 1 9!Q,•396 21"x15" ELLIPTICAL C.M.P. Worksheet for Circular Channel Project Description Project File Worksheet Flow Element Method Solve For c:\haestad\fmw\airpark.fm2 DESIGN POINT 1 (CULVERT) Circular Channel Manning's Formula Discharge Input Data Mannings Coefficient Channel Slope Depth Diameter 0.024 1.5000 % 17.2 in 18.00 in Results Discharge Flow Area Wetted Perimeter Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Full Flow Capacity Full Flow Slope Flow is subcritical. 7.48 cfs 1.74 ft2 4.08 ft 0.62 ft 1.06 ft 95.56 0.024078 ft/ft 4.30 ft/s 0.29 ft 1.72 ft 0.45 7.50 cfs 6.97 cfs 0.017271 ft/ft CG/10. 6 jason 03:14:13 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 7661666 FlowMaster v5.10 Page 1 of 1 590386 Curve Plotted Curves for Circular Channel Discharge (cfs) 11.0 10.0 9.0 8.0 7.0 Project Description Project File Worksheet Flow Element Method Solve For c:lhaestadlfmwlairpark.fm2 DESIGN POINT 1 (CULVERT) Circular Channel Manning's Formula Discharge Constant Data Mannings Coefficient Depth Diameter 0.024 17.2 in 18.00 in input Data Minimum Maximum Increment Channel Slope 0.5000 3.0000 0.1000 % Discharge vs Channel Slope 6.0 5.0 4.0 0.5 1.0 1.5 2.0 Channel Slope (%) 09/10/96 03:12:58 PM 2.5 jason Haestad Methods. Inc. 37 Brookside Road Waterbury, CT 06708 (tai) 755-1666 30 FlowMaster v5.10 Page 1 of 1 970386 A A KLAM SSOCIATES, INC. SURVEYING - ENGINEERING P.O. BOX 795 • 1001 E. BRIDGE ST. BRIGHTON, COLORADO 80601 • (303) 659-8546 PROJECT ;O 7 '- ALI/ .1; /P P'//-' JOB NUMBER SHEET OF CALCULATED BY DATE CHECKED BY DATE OUiL Cr �i ,/c7;,/AcPIFICC pL/9%s. 117 -LL OW C- /D ycC /<'s-2.5- -:c �niu aLEV.. = 92.E /71 - /. 2 2.eG -o, '5" /'r --.-x Z.Q6 = 3,12)771; • 'it- 7; O. 9 3 ° _ /z ,Ci - /.O E r = / 3 „ ift ?-SG CF DETENTION POND 100(YR) OUTLET CULVERT Worksheet for Circular Channel Project Description Project File Worksheet Flow Element Method Solve For c:\haestathfinMairpark.fm2 OUTLET PIPE Circular Channel Manning's Formula Discharge Input Data Mannings Coefficient Channel Slope Depth Diameter 0.024 0.6500 % 22.8 in 24.00 in Results Discharge Flow Area Wetted Perimeter Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Full Flow Capacity Full Flow Slope Flow is subcritical. 10.61 cfs 3.08 ft2 5.38 ft 0.87 ft 1.17 ft 95.00 0.018099 ft/ft 3.44 fns 0.18 ft 2.08 ft 032 10.63 cfs 9.88 cfs 0.007505 ft/ft 09/13/96 10:46:39 AM Jason Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06706 (X)3) 755-1666 FlowMaster v5.1O Page 1 of 1 970386 Hello