BALCH CREEK WATERSHED PROTECTION PLAN Inventory, Analysis, and Regulations for Fish and Wildlife Habitats, Natural Areas, Open Space, Water Bodies, and Wetlands Bureau of Planning City of Portland Adopted by Ord. No. 163770 Effective, Febmaxy 8, 1991 Portland City Council E. Bud Clark, Mayor Earl Blumenauer, Commissioner Dick Bogle, Commissioner Michael Lindberg, Commissioner Portland Planning Commission Martha Peck Andrews, President Richard Cooley, Vice President Stan Amy Estill Deitz Barbara M. Karmel Margaret Kirkpatrick Richard Michaelson Chet Orloff Vivian Parker Balch Creek Task Force Molly O'Reilly, First Officer, Forest Park Neighborhood Association Chair Colin Macdonald, Second Officer, Royal Highlands Resident Jim Thayer, Third Officer, Friends of Forest Park Chair Jim Bartels, Balch Creek Watershed Resident Richard Caplan, Nob Hill Business Resident Larry Espey, Oregon Parks Foundation Chair Joanne Garnett, Multnomah County Planner Charles Hales, Homebuilders Association of Metropolitan Portland Jay Massey, Oregon Department ofFish and Wildlife District Biologist Scott Meyer, Portland Audubon Society Board Member Chris Wrench, Northwest District Association Balch Creek Watershed Protection Plan fuventory, Analysis, and Regulations for Fish and Wildlife Habitats, Natural Areas, Open Space, Water Bodies, andWetlands Bureau ofPlanning Earl Blumenauer, Commissioner-In-Charge Robert E. Stacey, Jr., Acting Planning Director Robert E. Clay, Chief of Long Range Planning and Urban Design Project Planner AI Burns, City Planner ProjectAssistance Tim Brooks, City Planner Duncan Brown, Senior Planner Jim Claypool, City Planner Jeanne Harrison, City Planner Dick Bellinger, Graphic Illustrator Linda Torgeson, Graphic Illustrator Geoff Sauncy, Graphic Illustrator Peter Hurley, Planning Assistant February 8, 1991 Balch Creek Watershed TABLE OF CONTENTS INTRODUCTION 1 Purpose 4 Organization of the Plan 4 Portland's West Hills .5 Balch Creek Watershed 12 Statewide Planning Goal 5 14 Relation to Other Policies 16 Statewide Planning Goals 16 Portland Comprehensive Plan 17 Northwest Hills Study 18 Balch Creek Task Force 18 Relation to other Studies 19 Mineral and Aggregate Sites 19 Scenic Resources 19 Sewer Facilities .20 INVENTORy 21 Process 23 Site Selection 23 Inventory Method 23 Site Inventory Summaries 23 Site 73 25 Site 74 29 Site 75 33 Site 76 35 Site 77 39 Site 78 41 Site 79 43 Site 80 45 Site 81 47 Site 82 .49 Site 83 53 Site 84 57 Site 85 61 Site A 63 Site B 64 Page iii Balch Creek Watershed TABLE OF CONTENTS (CONTINUED) ANALYSIS 65 Method 66 Compatible Uses 66 Conflicting Uses 66 Environmental Consequences of Allowing Conflicting Uses 66 Agriculture 67 Forestry 68 Landscaping 69 Housing 70 Businesses 70 Developed Open Space 70 Recreation 71 Public Facilities and Utilities 71 Traffic 71 Education and Research 72 County Zoning and Partition Practices 72 Economic Consequences of Allowing Conflicting Uses 72 Social Consequences of Allowing Conflicting Uses 73 Energy Consequences of Allowing Conflicting Uses 73 Economic Consequences of Limiting or Prohibiting Conflicting Uses 74 Social Consequences of Limiting or Prohibiting Conflicting Uses 74 Environmental Consequences of Limiting or Prohibiting Conflicting Uses 74 Energy Consequences of Limiting or Prohibiting Conflicting Uses 74 Site Analysis Summaries 75 Site 73 77 Site 74 79 Site 75 81 Site 76 83 Site 77 85 Site 78 87 Site 79 89 Site 80 91 Site 81 93 Site 82 95 Site 83 99 Site 84 101 Site 85 103 Page iv Balch Creek Watershed TABLE OF CONTENTS (CONTINUED) REGULATIONS 105 General Summary 107 Management Objectives 107 Cutthroat Trout 107 Wildlife Corridor 107 Floods 107 Streams and Forests 107 Protection Plan Implementing Measures l07 Amended Comprehensive Plan Policy 8.11.. 108 Amended Comprehensive Plan Policy 2.5 109 Future Urban Overlay ZOne ll0 Amended Comprehensive Plan and Zoning Designations 112 New Use Restrictions, Development Standards, and Approval Criteria 114 Natural Resource Management Plans 120 Site Regulation Summaries 121 Site 73 123 Site 74 125 Site 75 127 Site 76 129 Site 77 131 Site 78 133 Site 79 135 Site 80 137 Site 81 139 Site 82 141 Site 83 145 Site 84 147 Site 85 149 INDEX 151 APPENDICIES 153 Page v Balch Creek Watershed LIST OF TABLES Reestablishment of a Disturbed Forest with a Conifer Seed Source .8 Reestablishment of a Disturbed Forest without a Conifer Seed Source 9 Page vi Balch Creek Watershed LIST OF MAPS Vicinity Map of Balch Creek Watershed 3 Map of Watershed Land Use 10 Map of Sites 11 Existing Zoning Map of Site 73 24 Existing Zoning Map of Site 74 28 Existing Zoning Map of Site 75 32 Existing Zoning Map of Site 76 34 Existing Zoning Map of Site 77 38 Existing Zoning Map of Site 78 40 Existing Zoning Map of Site 79 .42 Existing Zoning Map of Site 80 44 Existing Zoning Map of Site 81 .46 Existing Zoning Map of Site 82 .48 Existing Zoning Map of Site 83 .52 Existing Zoning Map of Site 84 56 Existing Zoning Map of Site 85 60 Topographic Map of Site 73 76 Topographic Map of Site 74 78 Topographic Map of Site 75 80 Topographic Map of Site 76 82 Topographic Map of Site 77 84 Topographic Map of Site 78 86 Topographic Map of Site 79 88 Topographic Map of Site 80 90 Topographic Map of Site 81 92 Topographic Map of Site 82 94 Topographic Map of Site 83 98 Topographic Map of Site 84 100 Topographic Map of Site 85 102 Recommended Zoning Map of Site 73 122 Recommended Zoning Map of Site 74 124 Recommended Zoning Map of Site 75 126 Recommended Zoning Map of Site 76 128 Recommended Zoning Map of Site 77 130 Recommended Zoning Map of Site 78 132 Recommended Zoning Map of Site 79 134 Recommended Zoning Map of Site 80 136 Recommended Zoning Map of Site 81.. 138 Recommended Zoning Map of Site 82 140 Recommended Zoning Map of Site 83 144 Recommended Zoning Map of Site 84 146 Recommended Zoning Map of Site 85 148 Page vii INTRODUCTION Balch Creek Watershed Pagel Vicinity Map Scale: 1 Inch =2.6 Miles I-I" ....lS(¥ ~ (;l,IS·M ''''~S1:'( 5T••~ ~ g ~ • ~ ~~ ;; ~{)"'" e. , QO"~ t "' ',,, ., :: ~ BALCH CREEK WATERSHED PROTECTION PLAN Iventory, Analysis and Regulations for Fish and Wildlife Habitats, Natural Areas, Open Space, Water Bodies and Wetlands Balch Creek Watershed Purpose This plan protects the natural resources of the Balch Creek Watershed. Balch Creek flows down the northeast side of the City of Portland's West Hills. This plan is the second in a series of Planning Bureau documents. The first was a five-part plan for the Columbia River Corridor. The Bureau of Planning is preparing similar plans for the following study areas: the reainder of the Northwest Hills (excluding the portion in the Tualatin River Watershed); the Southwest Hills (excluding the portion in the Tualatin River Watershed); the Tualatin River Watershed (in two parts, one for the Skyline Boulivard area and the other for Fanno Creek and its tributaries); Central and East Portland Buttes and Uplands; and the Johnson Creek Watershed. The purpose of the Balch Creek Watershed Protection Plan is to identify, evaluate, and protect fish and wildlife habitats, ecologically and scientifically significant natural areas, open spaces, water bodies, wetlands, and the functions and values of the watershed as a whole. The plan is wriitten to comply with Statewide Planning Goal 5. This Goal established the following three-stepped process: (1) Inventory - identify, describe, and evaluate the location, quality, and quantity of each natural resource within the City; (2) Analysis - evaluate the economic, social, environmental, and energy consequences of allowing, limiting, and prohibiting uses which conflict with each identified resource; and (3) Decision - choose to protect or not protect each identified resource. Partial protection is accomplished by limiting conflicting uses. Full protection is accomplished by prohibiting conflicting uses. This plan contains documentation that the levels of protection afforded by the regulations are sufficient. Organization of the Plan This Balch Creek Watershed Protection Plan is organized in five parts. The first part is a general introduction to the study area and study process. This part also describes other Bureau of Planning studies and relates the Balch Creek Watershed Protection Plan to other work. The second part is a detailed examination of each resource site within the study area. The third part is an analysis of conflicts between resource use and resource protection. The fourth part is several regulations designed to protect or conserve the most significant resources. The final part is a series of appendices. These appendices contain both general background information and more detailed information for each resource site. Page 4 Balch Creek Watershed Portland's West Hills Portland's West Hills are the southern part of the Tualatin Mountains. Geological evidence suggests that these mountains were formed by a variety of forces acting over millions of years. The oldest known rock in the West Hills is known as the Scappoose formation, a thick bed of sandstone and shale believed to be deposited in an ancient ocean twenty-two million years ago.! These sedimentary rocks were subsequently covered by a thick layer of lava during a period of regional vulcanism. This lava is an igneous rock called Columbia River Basalt. Geologists think this basalt is sixteen million years old. Columbia River Basalt comprises most of the bulk of the West Hills.2 The period of regional vulcanism was followed by a long period of weathering in which basalt was reduced to clay. The red crust now found on exposed basalt was deposited during a period when the West Hills enjoyed a tropical climate.3 Tectonic forces reshaped and reoriented the originally flat basalt into the Tualatin Mountains at the same time the Coast and the Cascade Ranges were forming. This period of squeezing and folding was followed by a second period of deposition of waterborne sediment. The resulting rock is known as the Troutdale Formation. This rock contains quartz, and is found on the lower slopes of the West Hills.4 A second period of more local vulcanism is quite recent in geological history. These smaller volcanos produced a type of igneous rock called Boring lava. Most of the taller isolated hills in Portland are Boring volcanoes. Boring lava is also a type of basalt and can be distinguished from Columbia River Basalt by its gray color. Boring lava can be found along the ridge tops and west slopes of the West Hills.s The most recent geological formation is a layer of wind blown silt deposited during the last ice age. This formation is a yellow-brown clay called Portland Hills Silt. This silt covers the upper portion of the West Hills. The deepest known deposit of this clay is a layer fifty-five feet thick found at the crest of the West Hills in Forest Park.6 Most soils in the West Hills drain poorly? A typical soil profile on an undisturbed, convex, thirty-degree slope in the West Hills includes the following: (1) a dark brown or dark grayish-brown silt loam top soil about a foot thick, (2) a yellowish-brown silt soil about two feet thick, (3) and a dark 1. Marcy Cottrell Houle, One City's Wilderness, Portland's Forest Park, (Portland, Oregon: Oregon Historical Society Press), 1987, p. 2. 2. ibidem p. 3. 3. idem 4. ibidem p. 4. 5. idem 6. idem 7. Peggy A. Olds, "Site Investigation: Forest Park Neighborhood Association, Erosion Problems Impacting Balch Creek, Report of the Multnomah County Soil Conservationist, Soil Conservation Service, United States Department of Agriculture" (Portland, Oregon: March 29, 1989), p. 2 PageS Balch Creek Watershed brown, mottled, silt subsoil about five feet thick.s The subsoil usually includes a fragipan, which is a layer less permeable to water than the upper layers. Fragipans limit the rooting depth of many plants. A seasonal water table is perched on top of fragipans every winter. This typical soil profile amounts to a high erosion and slumping hazard due to the seasonal water table, slow permeability, low strength, and the tendency of the upper layers to slide over the fragipan whenever they become saturated.9 Slumping is common in the West Hills, especially when bare soil is exposed to rainfall or when soil is cut or filled,1o Several major land slides have occurred in the West Hills.n The instability of the soil is a major reason why much of the West Hills has not been developed and is now included in parkland, wildlife sanctuaries, open space, and farm and forest zones,12 Extreme care must be take when disturbing these soils, and vegetation must be reestablished quickly on disturbed areas to prevent erosion, sliding, and slumping,13 The climax vegetation of the West Hills is western hemlock forest. Forest researchers refer to areas which develop this type of forest as the Tsuga heterophylla Zone,14 The zone name is taken from the the scientific name for western hemlock even though Douglas fir, Pseudotsuga menziesii, and western red cedar, Thuja plicata, are the dominant tree species in many forest stands. Most of the forests in this zone have been logged or burned, and these factors also contribute to the relative scarcity of western hemlock within its own zone.1S The Tsuga heteraphylla Zone occurs only in areas with wet, mild, maritime climates in western British Columbia, Washington, and Oregon,16 These forests obtained their present form after post-glacial warming six thousand years ago. These forests are unique because their coniferous species are the largest and longest lived members of genera of world-wide distribution. They are unusual in that conifers dominate hardwoods. The accumulated bio-mass of these forests is also greater than any other type of temperate forest,17 Forest researchers place Tsuga heterophylla forest into categories by examining their understory. The understory reflects amount of moisture received by the forest. The forests of the West Hills are of the Tsuga heterophylla / Polystichum munitum association, the second wettest forest category of the 8. ibidem 9. ibidem 10. ibidem 11. Houle, p. 4. 12. idem, p. 5. 13. Olds p. 4. 14. Jerry F. Franklin and Tawny Blinn, Natural Vegetation of Oregon and Washington (Corvallis: Oregon State University Press for the United States Forest Service, 1987), p.70. 15. idem p. 71. 16. ibidem 17. Houle, p. 18. Page 6 Balch Creek Watershed zone. The term for this association is taken from the scientific name of our common sword fern, but other understory species are also found in the West Hills.lB Most of the forests in the West Hills have been logged, either selectively or by clear cutting. Clear cutting was often followed by controlled burning of slash to prevent wild fires.l 9 West Hills forests have also been disturbed by natural fires and land slides. The type of forest that grows back after a disturbance depends on the nature and severity of the original disturbance, available seed sources, and climatic conditions.20 The greater the disturbance, the more red alder will generally appear in the regenerating forest.21 The stages through which a forest regenerates are called a successional pattern. The tables on the following two pages describe two typical successional patterns in the West Hills. Both successional patterns assume a complete disturbance and identical elevations, degrees of slope, slope aspects, soils, temperatures, and rainfalls. Table 1 assumes the presence of a conifer seed source, Table 2 assumes that a conifer seed source is not present. Mature examples of old conifer forests are rarely found in cities, but in Portland, mature stands can be viewed in the upper portion of Macleay Park and near Germantown and Newton Roads.22 Hardwood stands are forests which are "stuck" in an early stage of the conifer successional pattern. Large stands of alder and maple are not a natural forest type in the Tsuga heterophylla Zone. Mature hardwood stands are the result poor forest management practices and are common in the West Hills. Forests also suffer from intrusion by urban landscape and exotic plants. English ivy, blackberries, English holly, and western clematis vines are prevalent in some West Hills forests and can retard normal successional patterns. Red alder is also found in association with cottonwood along water courses. Red alder and cottonwood stream side forest are called a galleries. A gallery is a special forest type occurring within the Tsuga heterophylla Zone. Gallery forests are the natural habitat of alder and are not the result of logging. The other special forest type once found in the West Hills is stands of large western red cedar with no fir and little hemlock. This is an old growth climax forest type which occurs only on wet lower slopes and stream terraces within the Tsuga heterophylla Zone. The stands of large cedar have been logged, but large cedar stumps can still be found in Forest Park, and young cedar is growing on wet sites in the West Hills. 18. Franklin and Blinn, p. 77. 19. idem p. 83. 20. idem p. 85. 21. Houle, p. 21. 22. idem p. 22. Page 7 Balch Creek Watershed Reestablishment of a disturbed forest with a conifer seed sourceTablet -. YEARS SINCE SUCCESSIONAL FOREST TREESPEOES DISTURBANCE STAGE TYPE PRESENT oto 5 years Herbs with None None immature shrubs 3 to 30 years Mature shrubs, None Red alder, big-leaf with immature maple, Scouler's hardwoods and willow, bitter conifers cherry, and Douglas fir 10 to 35 years Mature Hardwoods Red alder, big-leaf hardwoods with topping conifers maple, Scouler's small immature willow, bitter conifers cherry, Douglas fir, grand fir, western red cedar, and western hemlock 30 to 100 years Mature Conifers topping Red alder, big-leaf hardwoods with hardwoods maple, Scouler's immature small willow, bitter and middle-sized cherry, Douglas conifers fir, grand fir, western red cedar, western hemlock, and western yew 80 to 250 years Small, middle- Larger immature Douglas fir, grand sized, and large conifers topping fir, western red immature smaller cedar, western conifers immature hemlock, and conifers western yew 200 to 800 years Mature conifers Sub-climax Douglas fir, grand with small, Douglas fir "Old fir, western red middle-sized, and Growth" cedar, western large immature hemlock, and conifers western yew 600 years to next Mature conifers Climax western Grand fir, disturbance with small, hemlock "Old western red cedar, middle-sized, and Growth" western hemlock, large immature and western yew conifers Page 8 Balch Creek Watershed Wildlife in the West Hills is of exceptional quantity and quality. Much of the West Hills is parks, open space, wildlife sanctuaries, farms, and forests. The undeveloped parcels are often adjacent to or near other undeveloped parcels. Many undeveloped lands are also close enough to undeveloped lands in the Coast Range for many animals to travel safely from the Coast Range to the West Hills. All of these factors contribute to the perpetuation of native animal species. The West Hills are a unique urban environment. Parks in other major North American cities are generally smaller, and undeveloped park land has usually disappeared parcel-by-parcel in a scattered jigsaw puzzle fashion. Some citizens also demand that natural park land be made more "park like" through the removal of downed logs, snags, and understory shrubs. Wildlife resulting from the loss of large areas of natural vegetation can include undesirable species more adapted to urban life. These species include the Norway rat, the house mouse, the house sparrow, and the pigeon.23 Portland has preserved native northwest wildlife by saving significant amounts of several native habitats. Within a ten minute drive from downtown Portland, the West Hills offer an opportunity to view a rare population of native trout, eight species of salamanders, one newt species, one toad species, four species of frogs, two species of lizards, five species of snakes, one skink species, two turtle species, 112 bird species and 62 mammalian species.24 While a few of these species require ponds, wetlands, or exposed rocks for habitat, most are forest or forest stream animals. Different forest species require forest habitat of a certain successional stage. The variety of forest habitats in the West Hills contributes greatly to the diversity of animal species. Balch Creek Watershed forests facilitate the passage of deer and elk to other habitat areas. Older forests are also used seasonally by migratory neotropical bird species. Table 2.- Reestablishment of a disturbed forest without a conifer seed source TIME SINCE SUCCESSIONAL FOREST TREE SPECIES DISTURBANCE STAGE TYPE PRESENT oto 5 years Herbs with immature None None shrubs 3 to 30 years Mature shrubs, with None Red alder and immature hardwoods big-leaf maple 10 to 50 years Mature and immature Mixed Red alder and hardwoods hardwoods big-leaf maple 35 years to next Mature hardwoods Mixed Red alder and disturbance hardwoods big-leaf maple 23. idem p. 36. 24. Information from Houle, the Nature Conservancy, and Portland Bureau of Planning field surveys. Page 9 BALCH CREEK WATERSHED PROTECTION PLAN Iventory, Analysis and Regulations for Fish and Wildlife Habitats, Natural Areas, Open Space, Water Bodies and Wetlands UNDnEDSEWERAGEAGENCY SERVICE ARE.... Legend: ~ Watershed Boundary FOREST PARK WATERSHED LAND USE HOLMAN PARK • North 0 1200' ! Scale ."~1IJ0l Areas Outside UGH Urban Growth Boundary (UGB) City Boundary Areas Inside UGH ~ Urban Open Space .... Urban Private Lands ~ Rural Private Lands ~ Rural Wildlife Area. I '1 1:!:I L' ""J (g .J '" d ". @ @b "0 "1 , , .' • • < • o < u.. u.. 1-- u.. u.. u 'u -.(J:: u.. u.. ~. u.. u.. Site 74 s • ,.,. '00' BALCH CREEK! - -No>th Scale Existinl! Zoning- Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 74 Area in and near Lower Macleay Park South of the Lawn Forest Park and Northwest 2924,2925, and 2926 One Hundred and Ninety-Six Acres Seven Eighteen NEIGHBORHOOD: QUARTER SECTION MAPS: APPROXIMATE AREA: OWNERSHIPS: PROPERTIES-. Tax Account Base Zone Overlay Zone Comp Plan Acres R-59030-0010 FF none as 05.34 R-59030-0170 FF none as 04.00 R-59030-0260 FF none as 03.28 R-59030-0310 FF none as 03.16 R-59030-0370 FF none as 05.65 R-91340-3390 FF none as 02.87 R-91340-3740 FF none as 02.13 R-94129-0190 FF none as 16.90 R-94129-0200 FF none as 52.43 R-94131-0010 FF none as 49.0060 R-94132-0320 FF none as 00.32 R-94132-0340 FF none as 30.16 R-94132-0430 FF none as 19.25 R-94132-0840 FF none as 00.23 R-94132-0890 FF none as 00.23 R-94132-1010 FF none as 00.23 R-94132-1050 FF none as 00.35 R-94132-1100 FF none as 00.36 DATE OF LAST FIELD INVENTORY: April 28, 1990 WETLANDS HABITAT CLASSIFICATIONS: Hardwood Riparian Gallery. Full-Year Stream with a UPLANDS HABITAT CLASSIFICATIONS: Growth Conifer Forest. Mixed First and Second WILDLIFE HABITAT ASSESSMENT SCORE: 95 TYPES OF RESOURCES: Fish and wildlife habitat, rare flora and fauna, historic, open space, scenic, recreational, educational. 63. The total area of this parcel is 103.74 acres. Portions of this parcel are induded in three separate sites for inventory purposes. Page 29 Balch Creek Watershed QUANTITY OF RESOURCES: About 180 acres of forested open space with a full-year stream, two hiking trails, and two historic resources. QUALITY OF RESOURCES: Fish habitat is of the highest quality. Wildlife habitat, open space, recreation, and educational opportunities are of high quality. The stream supports cutthroat trout. Rare flora includes old conifers and an unusual shrub called western wahoo. Balch Creek is very scenic.64 There are two historic resources in this site. The first is the Park itself which is of low historic significance. About 50 acres of this site is from the original Macleay Donation.65 There is a WPA stonework building at the conjunction of Wildwood and Lower Macleay Trails. It was built in 1932 and provided public lavatories until its water supply was destroyed by the Columbus Day storm of 1962. This building is of moderate historic significance.66 CONCLUSION: Site 74 is of very high significance. 64. Portland Bureau of Planning, Scenic Views, Sites, and Corridors: Scenic Resources Protection Plan, part vi, map facing page vi7. 65. Portland Bureau of Planning, Historic Resource Inventory, inventory number 2-888-03020. 66. idem, inventory number 2-888-03026. Page 30 H ILL T .....- 6 ,- .•,. Xl -----.----._--,~----,~ ,. tIn .OUIIDAAY , ;, (OS) FF 'n- ,.. '." MULTNOMAH CO NTY FF l:1ty BOUtjOUY :a~''''- i cmIO~ICOIJ\Y . " I I I II I Site 75 C c 200' '00' BALCH CREEKINorth ScaleExistinQ" Zoninl! Bureau of Planning • City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 75 Area in and near the Portland Audubon Society's Pittock Sanctuary Forest Park 2923 and 2924 Twenty-Three Acres Two Three NEIGHBORHOOD: QUARTER SECTION MAPS: APPROXIMATE AREA: OWNERSHIPS: PROPERTIES'. Tax Account Base Zone Overlay Zone Comp Plan Acres R-94131-0170 FF none as 22.20 R-94131-0570 FF none as 00.36 R-94131-0690 FF none as 00.18 DATE OF LAST FIELD INVENTORY: April 28, 1990 WETLANDS HABITAT CLASSIFICATIONS: Full-Year Forested Stream with a Hardwood Riparian Gallery and an Artificial Pond. UPLANDS HABITAT CLASSIFICATIONS: Mixed First and Second Growth Conifer Forest. WILDLIFE HABITAT ASSESSMENT SCORE: 90 TYPES OF RESOURCES: Fish and wildlife habitat, rare flora and fauna, historic, open space, scenic, recreational, educational. QUANTITY OF RESOURCES: About 20 acres of forested open space with a full-year stream, an artificial pond, many trails, and an historic resource. QUALITY OF RESOURCES: Site 75 has the same natural values as Site 74 but is managed intensely for educational use. Fish habitat is degraded by a culvert which inhibits fish passage and would be degraded further if State permitted levels of water withdrawals were used to fill an existing artificial pond. Wildlife habitat is degraded by a high number of trails per unit of area. The site suffers from intrusion from exotic and naturalized plant species. Recreation and open space are degraded by trail placement and design. The site does have significant natural values and contributes to the values of surrounding sites. The site contains cutthroat trout and a large sequoia specimen. Balch Creek is scenic.67 The sanctuary is also an historic resource of moderate significance.68 The site provides more educational value than any other site in the watershed. The intensity of human use is mitigated by a ban on pets. CONCLUSION: The site is of High Significance. 67. Portland Bureau of Planning, Scenic Views, Sites, and Corridors: Scenic Resources Protection Plan, part vi, map facing page vi7. 68. Portland Bureau of Planning, Historic Resource Inventory, inventory number 2-183-05151. Page 33 •; "., .: "~"''''~-~:~.: 1- "', ••• , .... ,. ....- r -'1"~ --. ~. - • • J' '.. ,' "0 ... ~" ...~.,.- , • ". :.c.' 'so' ,. ..... .. ,: ~ -- . LL·...,...•.. ·.L!~..t'-< ~ ....J.~. •' F FF G • " {8S 1 \n;;';':'::'- - - ----l~?~·~·---~;lII!1ff''''''Jl'I- ''t"-_-J,-;;;::;;:----:.L-._~'~··~·AZO~'_...... CITY BOUNDARY ,,,,,'. , -,-'~ ..... '.!&..~~C"·C;;;,C':-' I - ,.,' 'n1'( v'- , ...... :~';Y. '~. '4' ~"'Y'. 1ft ..': . ;;~.:. ~.: .. , .. , ~I' " .. ' \..',~ ... ~ FF'. . 'S', " " , "",.... '.f '''6' \ I H20J ,.... I. 7FFY /" ~.-t;I. . "" ' , , '"'''"'"''' .,l . '0;: .... ::1, ..uIll! ~ ------.---------------------~ I • ",'", 'Jo . (H20)., "",' , ':: "LJj _--.-..~,', "'_- .;' ,- .'" I: ':-;"." "['",~' .- iL.. I. f,,1;-:._ " ,¢. , , ,\,' , ">/.... ?j . ~~, ,' ..;'~'.. '~"", ~'\~l: ";.' "t:.. k/~~\~-r' ,~- '. Site 83 2 0 200' '00' BALCH CREEKI Existing Zoning North Scale Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Site 83 Balch Creek Watershed Area near Intersection of Greenleaf and Cornell Roads QUARTER SECTION MAPS: APPROXIMATE AREA: OWNERSHIPS: PROPERTIES: 2821,2822,2921, and 2922 Seventy Acres Thirteen Fifteen Tax Account Base Zone Overlay Zone Comp Plan Acres Unassigned A75 FF none FF 00.98 Unassigned B76 FF none FF 00.99 Unassigned cn FF none FF 01.64 Unassigned D7~ FF none FF 02.13 Unassigned £79 FF none FF 05.56 Unassigned F~u FF none FF 02.12 Unassigned G~1 FF none FF 02.15 R-17870-0250 FF none RIO 04.12 R-17870-0290 C2 none C2 00.74 R-17870-0330 FF none R20 00.60 R-17870-0380 FF none R20 and C2 02.92 R-59040-0280~z FF none FF 00.00 R-59040-0300 FF none FF 00.3483 R-96125-0130 FF none FF 16.34 R-96125-0140 FF none FF 01.70 R-96136-0010 FF none FF, R20, C2 15.20 R-96136-1760 FF none C2 andR20 01.37 R-96136-1770 FF none FF 02.09 R-96136-1830 FF none FF 04.99 R-96136-1850 FF none FF 02.01 R-96136-1860 FF none FF 02.02 75. This property is lot 1 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 76. This property is lot 2 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 77. This property is lot 3 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 78. This property is lot 4 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 79. This property is lot 5 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 80. This property is lot 6 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 81. This property is lot 7 of the Mountain View Park No 2 subdivision which was replatted on March 1, 1990. 82. This lot no longer exists; it is part of the replat described above. 83. A variance (VZ 60-89) allows one house on 15,000 square feet of area for this lot only in a Farm and Forest zone. The Farm and Forest zone requires a two acre (87,120 square feet) minimum lot size. Page 53 Balch Creek Watershed DATE OF LAST FIELD INVENTORY: January 3, 1990 WETLANDS HABITAT CLASSIFICATIONS: Full-Year Stream With Riparian Gallery. UPLANDS HABITAT CLASSIFICATIONS: Second Growth Forest and a Meadow WILDLIFE HABITAT ASSESSMENT SCORE: 85 TYPES OF RESOURCES: Wildlife and Fish Habitat, Scenic QUANTITY OF RESOURCES: About 90 Acres of Second Growth Forest with a Class One Forest Stream. QUALITY OF RESOURCES: Site 83 contains the headwaters of Balch Creek. The site has second growth mixed conifer and hardwood cover with some remnant first growth Douglas fir trees. A meadow is also established on an unpermitted fill. Maintenance of the hydrography of Site 83 is of critical importance for Balch Creek. The existing fill harms the creek in two ways, by continuing to erode and by covering a spring which flows through the fill. The combination of fill and spring introduces discolored water into Balch Creek. Down stearn water quality tests, however, have not discovered any significant levels of pollutants. The harm appears to be limited to increased turbidity and the silting of trout spawning beds. This is another site with steep forested ravines. Maintenance of forest cover in these ravines and stream banks is critical for erosion and flood control. The forest also provides high scenic value from Skyline Boulevard and Cornell Road. There is a stand of high quality conifer forest west of and beyond the Cornell Road scenic corridor, but this forest is disconnected from other similar forests in the watershed. CONCLUSION: The portion of Site 83 south of Cornell Road is of very high significance; the portion north of Cornell Road is of high significance. Page 54 ._.." . . 1" '. ...~. :.t'· " ., • • • ',~. , ""<' .-,.....-~ . :: .. '~:J\,:. K , v L " FF p H M c . ",---'1·' ." (,,) J.3?AL (32 ' 1 (.,., ), 7.12 A. . 7.6:1..(.. .. , ... ., . • ~ t l.,S) 7.82J~ . MULTN MA COUN Y ,.. ." ------ N a CITY BOUNDARY FF Site 84 e • 200' '00' BALCH CREEKI Existing Zoning North Scale Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 84 Area near Skyline and Thompson Roads NEIGHBORHOOD: QUARTER SECTION MAPS: APPROXIMATE AREA: OWNERSHIPS: PROPERTIES: Forest Park 2721 and 2821 Fifty-Two Acres Seven Seventeen Tax Account Base Zone Overlay Zone Comp Plan Acres Unassigned H~4 FF none FF 00.61 Unassigned l~' FF none FF 00.36 Unassigned J~b FF none FF 00.50 Unassigned K~I FF none FF 00.77 Unassigned L~~ FF none FF 01.50 Unassigned M~Y FF none FF 01.43 Unassigned NYU FF none FF 06.15 Unassigned OYI FF none FF 02.14 Unassigned pYL FF none FF 00.93 Unassigned Q93 FF none FF 12.76 R-77380-0410 RIO none RIO 00.35 R-96125-0070 FF none FF 00.30 R-96125-0080 FF none FF 01.96 R-96125-0670 FF none FF 00.78 R-96125-0790 FF none FF 06.00 R-96125-0910 FF none FF 00.53 R-96125-0970 FF none FF 15.00 R-96125-101OY4 FF none FF 00.00 DATE OF LAST FIELD INVENTORY: WETLANDS HABITAT CLASSIFICATIONS: Riparian Gallery Forest January 24, 1990 Full-Year Stream with 84. This property is Lot 1, Block 1, of the Gales Ridge, Planned Unit Development. 85. This property is Lot 2, Block 1, of the Gales Ridge, Planned Unit Development. 86. This property is Lot 3, Block 1, of the Gales Ridge, Planned Unit Development. 87. This property is Lot 4, Block 1, of the Gales Ridge, Planned Unit Development. 88. This property is Lot 5, Block 1, of the Gales Ridge, Planned Unit Development. 89. This property is Lot 6, Block 1, of the Gales Ridge, Planned Unit Development. 90. This property is Lot 7, Block 1, of the Gales Ridge, Planned Unit Development. 91. This property is Lot 8, Block 1, of the Gales Ridge, Planned Unit Development. 92. This property is Lot 9, Block 1, of the Gales Ridge, Planned Unit Development. 93. This property is Lot 10, Block 1, of the Gales Ridge, Planned Unit Development. 94. This lot no longer exists; it has been replatted as the Gales Ridge, Planned Unit Development. Page 57 Balch Creek Watershed UPLANDS HABITAT CLASSIFICATIONS: Second Growth Mixed Conifer and Hardwood Forest WILDLIFE HABITAT ASSESSMENT SCORE: 80 TYPES OF RESOURCES: Wildlife and Fish Habitat, Scenic QUANTITY OF RESOURCES: About 45 Acres of Second Growth Forest QUALITY OF RESOURCES: Although second growth, the forest on Site 84 has many conifers topping the hardwoods, and some remnant first growth fir remain. This site is also the headwaters of the Thompson Road stem of Balch Creek. This stem contains some of the best trout spawning beds in the watershed. This is another site with steep forested ravines. Very dark muddy water was observed in lowest section of Balch Creek during the spring of 1990. This mud was silting spawning beds and reducing clarity to a point that trout would have difficulty feeding. The source of some of this mud was a blowout at the juncture of a public and private water line in Site 84. This incident is yet another example of soil instability and erosion problems on steep, denuded banks. Site 84 has high fish and wildlife values. The forest on this site also provides scenery from Thompson Road and Skyline Boulevard, both of which are worthy of scenic corridor status.95 CONCLUSION: The steep forested slopes, ravines and streams on Site 84 are of the highest quality; the remainder of the forest provides high scenic value. 95. Portland Bureau of Planning, Scenic Views, Sites, and Corridors: Scenic Resources Protection Plan, part vi, map facing page vi7. Page 58 PA,n"l 1 OS FF i ADD1TH?_N No.no ",au NTAIN ~1f:W U .' (OS) FF' " .. - .' ,~"l,,--,,-----------+-------i: , . , I 1 I I ·,......-'fir4r~"~-·_·_· '.' '.'.:. MULTNOMAH COUNTY .. , '.,' MULTNOMAH COUNTY FF ·:r- \ ::--..:. k I ! I, : ~ Site 85 • , - .~ BALCH CREEl{, &ale -North Existing Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 85 Area in and near Forest Park Between Thompson Road and 53rd Avenue NEIGHBORHOOD: QUARTER SECTION MAPS: APPROXIMATE AREA: OWNERSHIPS: PROPERTIES: Forest Park 2723, 2823, 2923 and 2924 Seventy-Eight Acres Two Eleven Tax Account Base Zone Overlay Zone Comp Plan Acres R-59030-1860 FF none as 15.00 R-59030-2100 FF none as 14.27 R-59030-2340 FF none as 06.19 R-59030-2660 FF none as 12.37 R-59030-2910 FF none as 02.60 R-59030-3310 FF none as 07.03 R-59030-351O FF none FF 03.00 R-59030-3560 FF none as 02.70 R-59030-3610 FF none as 03.00 R-59030-4010 FF none as 06.00 R-59030-4014 FF none as 06.00 DATE OF LAST FIELD INVENTORY: WETLANDS HABITAT CLASSIFICATIONS: Stream with a Riparian Gallery UPLANDS HABITAT CLASSIFICATIONS: WILDLIFE HABITAT ASSESSMENT SCORE: January 24, 1990 Full-Year Forested Second Growth Conifer Forest 97 TYPES OF RESOURCES: Fish and Wildlife Habitat, Open Space, Rare Plant Communities, Recreation, Education, Scenic. QUANTITY OF RESOURCES: About Eighty-Nine Acres of Forest With Three Tributary Streams QUALITY OF RESOURCES: Site 85 has a very high quality conifer forest with several species and of different ages. Although the forest is second growth, enough first growth fir remain to give the forest canopy good vertical structure. Fish and wildlife habitat are excellent because of proximity to Balch Creek and several hundred acres of adjoining forested land. There is one cleared lot in this site, but the clearing is far enough removed from other clearings to do no serious harm. Open space, recreation, and educational Page 61 Balch Creek Watershed opportunities are also excellent. The forest provides scenery for Thompson Road and 53rd Avenue, both of which are worthy of scenic corridor status.96 CONCLUSION: The Forested Portion of Site 85 is of High Significance. 96. Portland Bureau of Planning, Scenic Views, Sites, and Corridors: Scenic Resources Protection Plan, part vi, map facing page vi7. Page 62 Balch Creek Watershed Multnomah County Site A Area North of the Royal Highlands Sewage Plant QUARTER SECTION MAPS: APPROXIMATE AREA: DATE OF LAST FIELD INVENTORY: WETLANDS HABITAT CLASSIFICATIONS: Riparian Forest Gallery 2923 and 3023 Twenty Acres December 2, 1989 Intermittent Stream with UPLANDS HABITAT CLASSIFICATIONS: Second Growth Hardwood Forest WILDLIFE HABITAT ASSESSMENT SCORE: 59 TYPES OF RESOURCES: QUANTITY OF RESOURCES: Wildlife Twenty Acres of Second Growth Forest QUALITY OF RESOURCES: Site A is important for its location and flood and erosion control functions. It has only medium habitat value, and this value is mainly provided to species preferring or requiring early succession forests. This forest appears to be "stuck" in an early stage because of the lack of a seed source for shade tolerant conifers. The result is a thick low canopy of maple and alder. However, a few old Douglas fir do remain, and cedar and grand fir seedlings are established. CONCLUSION: Site A is significant because of its location. It is probably a critical link in a corridor for deer and elk, and its forest preserve water quantity and quality for Balch Creek. Page 63 Balch Creek Watershed Multnomah County Site B Area near Balch Creek Tributary South of Thompson Road QUARTER SECTION MAPS: APPROXIMATE AREA: DATE OF LAST FIELD INVENTORY: WETLANDS HABITAT CLASSIFICATIONS: Riparian Forest Gallery UPLANDS HABITAT CLASSIFICATIONS: WILDLIFE HABITAT ASSESSMENT SCORE: 2833 Forty-Five Acres January 3, 1990 Full-Year Stream with a Second Growth Forest 88 TYPES OF RESOURCES: QUANTITY OF RESOURCES: Fish and Wildlife Habitat, Scenic About 40 acres of Forest QUALITY OF RESOURCES: The Forest is of high quality and contains some the best trout spawning beds in the watershed. Wildlife values are also high. Site B also provides forest scenery from Thompson Road CONCLUSION: Page 64 Site B is of high significance. ANALYSIS Balch Creek Watershed Page 65 Balch Creek Watershed Method This section analyses the consequences of protecting the natural resources of the Balch Creek Watershed and the consequences of allowing the resources to be diminished or lost. These consequences can be site specific or can effect the watershed as a whole. Uses which affect the entire watershed are addressed in the general analysis. Site specific uses are examined in the individual site analyses. Compatible Uses Only three uses allowed by present zoning are compatible with every resource in the Balch Creek Watershed. These compatible uses are the following: 1. Aesthetic enjoyment of natural features from existing roads or trails, 2. Educational use of natural areas by individuals and groups, and 3. Low intensity recreation on established trails such as walking, jogging, running, and nature observation. Since these uses do not conflict with any identified resource, they are not addressed in either the general analysis of conflicting uses or the supplemental site by site analyses. Conflicting Uses Conflicting uses are those uses which are incompatible with resource protection but allowed by present City of Portland zoning. If these uses actually occurred at the intensities and during the times allowed by the Comprehensive Plan, they would diminish or destroy the identified resources of the Balch Creek Watershed. This protection plan identifies eleven uses which conflict with at least one Balch Creek Watershed resource. These uses, and their adverse effects on resources, are described and analyzed below. Other uses which would conflict with resource protection, but are not allowed by the existing zoning of the Balch Creek Watershed (an example is heavy industry), are not conflicting uses within the meaning of state law. These hypothetical conflicts are not analyzed by this protection plan. Environmental Consequences of Allowing Conflicting Uses The following is a general analysis of the effects of conflicting uses on the Balch Creek Watershed as a whole. Conflicts with site specific resources are analyzed in the sections examining the individual sites. Page 66 Balch Creek Watershed Agriculture Most common farm practices are allowed in the City's Farm and Forest Zone. Many of these practices cause erosion which silt spawning beds and muddy the water. Agriculture also takes irrigation water from streams and wells. This water is often needed to support aquatic life. To support the Balch Creek cutthroat trout population, the creek water must be maintained at its present quantity and purity, and at proper seasonal flows, clarity, and temperature. Irrigation could turn Balch Creek into a seasonal stream or a dry bed. The conversion of forest to farm land also replaces diverse forest plant communities with only a few cultivated species. The forest cover in the Balch Creek Watershed is needed to prevent the synchronization of flood events, prevent bank erosion, and prevent silting of stream beds. Forest cover is also needed to maintain maximum and minimum stream flows at proper levels. Forest leaf mass and decaying organic matter act like a sponge by trapping and absorbing rainwater during wet periods and releasing stored water during dryer periods. The removal of cover would be enough to turn Balch Creek into a seasonal stream or a dry bed, even if the creek was not also used for irrigation. The removal of cover would also cause more frequent and severe flooding of City park land and the Northwest Industrial area. Preparing land for planting or grazing often fills wetlands and removes riparian vegetation from stream banks. The removal of these natural features increases storm water runoff and eliminates the purifying effects of these natural features. Purifying vegetation is particularly valuable on farm land because crops often require the use of herbicides, fertilizers and pesticides. Some of these chemicals harm to aquatic life. Farm use does not diminish open space, but can degrade some scenic areas and recreational opportunities. Farming also fragments, degrades, or destroys wildlife habitat. Clearing and planting provide opportunities for nonnative and intrusive plants to become established in adjacent forest. Clearing of forests destroys forest plants. Some of the Balch Creek Watershed plant species and plant communities are quite rare. Clearing also removes habitat needed by some native animals. Lost habitat includes nesting, perching and roosting places for birds. Clearing also removes plants which produce edible seeds, berries, nuts, bark, leaves, stems, and roots for animals. The clearing of older forests removes habitat with shade tolerant tree species such as grand fir, Pacific silver fir, western hemlock, western red cedar, and western yew. These older forests are needed to resist intrusion of nonnative species, facilitate succession to climax ecosystems, and provide seed to less mature forests. These old forests have complex structure in the form of multiple layered canopies, downed logs, large trees, and snags. Several animals depend exclusively on older forests. Some of these species require Page 67 Balch Creek Watershed more old forest than others, and as the amount of old forest is fragmented into small patches or reduced in total area, fewer native species can survive. At some point native animals are replaced by domestic pests, such as mice and rats, as the forest continues to diminish. These old forest also contain more leaf mass than younger forest, so they are better able to retain and detain storm water. Forestry Most common forest culture and harvest practices are allowed in the City's Farm and Forest Zone. Often forest harvest practices cause more erosion than farming because forestry is economically practicable on steeper slopes than farming. Forestry also uses irrigation water to establish tree plantations. The erosion, sedimentation, and water withdrawal effects of tree harvesting would be at least as destructive to the Balch Creek cutthroat trout population as the farm practices described above. The harvest of trees would also lead to more frequent and more severe flooding of City Park land and the Northwest Industrial area. Forestry can replace multi function forest ecosystems with more simple systems or monoculture tree plantations. Cultured forests and tree plantations often have less leaf mass than the natural forests they replace; and the leaf mass they have is usually closer to the ground than in natural forests. Tree plantations have less ability to prevent the synchronization of flood events, prevent bank erosion, and prevent silting of stream beds than do old natural forests. Stream temperatures and flows are also more variable in tree plantations. The harvest of trees also removes riparian vegetation from stream banks. The removal of riparian vegetation increases storm water runoff and eliminates the purifying effects stream side vegetation. Forestry also involves the use of herbicides, fertilizers and pesticides. Some of these chemicals can harm aquatic life. Forestry does not diminish open space, but degrades scenic areas and diminishes recreational opportunities. The harvest of trees also fragments, degrades, or destroys wildlife habitat. Tree cutting and planting provide opportunities for nonnative and intrusive plants to become established in adjacent natural forest. Tree cutting, and the storing and transport of logs, destroys a variety of forest plants. Timber harvest has the same effects on native plants, fish, and wildlife as the clearing activities described in the analysis for agriculture. The establishment of tree plantations does, however, provide appropriate habitat for species which prefer or require early successional natural forests, or benefit from the forests fringes around clearings. Page 68 Balch Creek Watershed The harvest of older natural forests removes shade tolerant tree species, multiple layered canopies, downed logs, large trees, and snags. Shade tolerant trees are not usually grown in tree plantations. Monoculture plantations are also more vulnerable to forest diseases and pests than natural forests. The loss of these older forests have the same effects on wildlife and flooding as described in the analysis of agriculture above. Landscaping The clearing of native forest and the establishment of lawns and other artificial landscape features is allowed in Farm and Forest, Residential, and Commercial zones. The clearing of forests, whether for homes, businesses, golf courses, school yards, cemeteries, or parks has the same effects as clearing done for agriculture or forestry. Like farming and forestry, the maintenance of landscaping requires the use of irrigation water. The erosion, sedimentation, and water withdrawal effects of clearing forests to establish landscapes would be as destructive to the Balch Creek cutthroat trout population as the farm and forest practices described above. The loss of native forests would also lead to more frequent and more severe flooding of City Park land and the Northwest Industrial area. Urban landscapes often have less leaf mass than the forests they replace; and the leaf mass they have is usually closer to the ground than in natural forests or tree plantations. Urban landscapes have less ability to prevent the synchronization of flood events, prevent bank erosion, and prevent silting of stream beds than do natural forests or tree plantations. Stream temperatures and flows are also more variable through landscapes than through natural forests or tree plantations. The establishment of urban landscapes often removes riparian vegetation from stream banks. The removal of riparian vegetation increases storm water runoff and eliminates the purifying effects stream side vegetation. The maintenance of landscapes also involves the use of herbicides, fertilizers and pesticides. Some of these chemicals can harm aquatic life. Landscaping does not diminish open space, but can degrade scenic areas and diminish recreational opportunities. The effects of landscaping on fish and wildlife habitat is similar to the effects of forestry described above. Landscape trees and shrubs often invade adjoining native forests. Ivy, holly, laurel, and clematis are particular problems in the Balch Creek Watershed. Some animals do, however, benefit from the proximity of landscaping to forests. These species feed on seeds and berries produced by landscape plant, and while they are not feeding they find protective cover in the forest. This feeding pattern is, however, responsible for the spread of exotic seeds to the forest. Page 69 Balch Creek Watershed Urban landscaping rarely involves the reestablishment of shade tolerant tree species, and seldom attempts to replicate the multiple layered canopies, downed logs, large trees, and snags found in old native forests. The loss of older forests have the same effects on wildlife and flooding as described for agriculture and forestry above. Housing Homes are allowed in Farm and Forest, Residential, and Commercial zones. Many farm and forest practices are also allowed in residential zones but these are not usually practicable because of small lot sizes. Residential use has all the landscape effects described above. It also has aggravating effects on storm water detention and retention, erosion, and sedimentation. These effects are most pronounced during construction, but continue afterward. The continuing effects are caused by soil compaction and by permanent surfaces impermeable to rain water. These surfaces include streets, private roads, drives, patios, sidewalks and roof tops. Compacted soil and hard surfaces accelerate stormwater runoff, and faster water causes more erosion. Runoff can also carry pollutants. Hard surfaces also prevent rain water from soaking into the soil and recharging ground water. Homes on drain fields can pollute ground and surface water. Household pets also kill and harass livestock and wildlife. Residences also generate traffic. Multifamily attached residential development generates less traffic per household than single family detached development, but could result in more total traffic because of greater total density. Residential use also diminishes open space, scenic values, and recreational opportunities. Businesses Businesses are allowed in commercial zones. There is less than an acre of commercial zoning in the Balch Creek Watershed. Two activities which have the character of businesses, the Mount Calvary Cemetery and the Portland Audubon Society, have conditional use permits for their use of farm and forest lands. Many farm and forest practices are also allowed in commercial zones but these are not usually practicable because of small lot sizes. Residential use is allowed in commercial zones at multifamily densities. Commercial use has all the landscape and residential effects described above, but increased lot coverage allowances compounds the problem of impermeable surfaces. Businesses also generate more traffic than homes, and diminish or destroy open space, scenic values, and recreational opportunities. Developed Open Space In the Balch Creek Watershed an Open Space Comprehensive Plan designation has been applied to cemeteries and parks. Cemeteries and developed park areas, such as lawns, groves, and arboretums, have the same Page 70 Balch Creek Watershed effects described for landscaping. These uses also generate traffic. The Open Space designation has also been mistakenly applied to some residential lots. The regulation section of this protection plan corrects these mistakes. Recreation Park trail construction and maintenance practices in the more natural areas of parks can cause erosion by placing trails near creeks or on steep banks. Certain trail designs seem to invite people and domestic animals to walk on or down stream banks. Fecal contamination of creeks by pets can also be aggravated by trail configuration. Pets exercised off leash or allowed to roam free can also kill and harass wildlife. Intensive recreation such as cycling, motoring, and equestrian sports occur on trails designed for hiking, and these activities cause erosion. Camping in public parks either for shelter by homeless persons or for recreation, although not allowed by park rules, does occur and degrades natural, recreational, and scenic values. Particularly dangerous is the use of camp fires during dry seasons. Although not allowed, trash dumping and littering does occur in parks. Trash degrades natural, recreational, and scenic values. Trash is also a seed source for nonnative intrusive plants, it pollutes water, and it can harm wildlife. Undeveloped open space generates some traffic and automobile parking at unpaved access points causes erosion. Public Facilities and Utilities Construction and maintenance practices for roads, storm water control structures, sewers, water lines and reservoirs, gas lines, utility poles, and electrical and telephone wiring have a variety of effects. These activities can cause erosion and provide opportunities for the establishment of nonnative plant species by disturbing soil and destroying perennial plant species. These practices degrade streams and wetlands and block fish passage. The establishment and maintenance of utilities often fragment wildlife habitat; increase storm water run-off; pollute water and reduce forest cover needed to support full-year streams at proper flows, clarity, and temperature. Maintenance removes important structural components from forests and removes vegetative cover. This cover is needed to prevent the synchronization of flood events, prevent bank erosion, prevent the silting of stream beds, and is needed to maintain maximum and minimum stream flows at proper levels. Traffic Traffic originating south and west of the the Balch Creek Watershed travels along Cornell Road at commuter speeds, often exceeding the posted limit, and at commuter volumes. This level of service continues despite the City's classification of Cornell Road as a neighborhood collector and the Planning Bureau's pending recommended for scenic corridor status. Traffic at present Page 71 Balch Creek Watershed levels of service degrades recreational opportunities, scenic values, and wildlife habitat. Education and Research Certain research and environmental education practices modify natural areas and compare the effects of the modifications with similar untouched areas. Modifications include the introduction of nonnative species, collecting native species at rate beyond the ability of affected populations to replace lost members by reproduction or recruitment; and the creation of habitats which would either not develop or not stabilize in nature. Many of these practices would conflict with the fish and wildlife habitat values of the Balch Creek Watershed. County Zoning and Partition Practices The uses identified and analyzed above are also allowed by adjacent Multnomah County Zoning. For the different conflicting uses county zoning is comparable to city zoning but can be more restrictive or more permissive for certain uses. Because land use regulation of the Balch Creek Watershed is shared between Multnomah County and the City of Portland, incompatible or uncoordinated land use regulations can jeopardize development opportunities and resource protection. The county is, however, at a disadvantage to the city in carrying out certain decisions to protect resources, because an Oregon Statute bans county regulation of forest practices beyond urban growth boundaries. Economic Consequences of Allowing Conflicting Uses Agricultural opportunities are not significant under present zoning. Small parcel size or steep slopes make the Balch Creek Watershed uneconomic for agriculture, although it is conceivable that some of the larger steep forested slopes could be cleared and used for grazing. Food production presently occurs only at the community garden in Adams Park and on home garden plots. This production appears to be more of a hobby than an economic activity, but may be important to some households. Industrial forestry is no longer practiced in the Balch Creek Watershed. Most of the remaining significant timber resources are in City park land. The production of wood and firewood is, however, economic, and woodlot operations could continue under existing farm and forest zoning. Existing commercial type activities are the Mount Calvary Cemetery and the Portland Audubon Society. These are not for profit activities which would continue under existing conditional use permits. The existing acre or so of Pagen Balch Creek Watershed commercial zoning in the Balch Creek Watershed might be used for higher density residential development instead of businesses. The most significant economic activity allowed by present zoning of the Balch Creek Watershed is residential development. Because residential development has such a high economic importance, this protection plan analyzes it on a site by site basis rather than generally. Social Consequences of AllOWing Conflicting Uses The increased residential development allowed by present zoning and Comprehensive Plan designations would have a positive effect on education by enhancing the school district tax base. It would also provide greater housing opportunities for wealthy families. Employment would increase in the construction trade and home service industries. Public health and safety would not be enhanced because increased tax bases generally do not cover the costs of providing police and fire protection response times to outlying areas which are equivalent to central areas. Sewer and water bills would not cover the costs of providing these services. Similar arguments can be made for public utilities. Recreational opportunities would be diminished. Existing transportation problems would be aggravated because the two Cornell Road tunnels and a winding entrance to downtown limit the service capability of this road to that of a neighborhood collector. W. Burnside Street could be improved to accommodate more traffic, but this would involve considerable public expense. Existing traffic pattern projections indicate that N. W. Cornell Road Commuter traffic will get as bad as it can get and will stay that way. Commuter traffic now originating in Washington County will be displaced by Forest Heights Planned Unit Development traffic, which will in turn be slightly displaced by commuter traffic originating in the Balch Creek Watershed. The displaced traffic will use W. Burnside Street and Highway 26, or be replaced by west side light rail commuting. Energy Consequences of Allowing Conflicting Uses Existing zoning would ensure a small by steady supply of biomass fuel in the form of firewood. Electrical energy loss through low voltage transmission lines would be greater than the loss for similar numbers of homes served at a higher urban density. Employment opportunities in the Balch Creek Watershed are limited to one conservation organization and one religious institution, so almost every employed householder would commute. This commuting would use a considerable amount of fossil fuels, because existing densities do not justify mass transit. Page 73 Balch Creek Watershed Economic Consequences of Limiting or Prohibiting Conflicting Uses The limiting or prohibiting of conflicting uses would have a negligible adverse effect on agriculture, a small but significant adverse effect on forestry and commerce, and a large and significant adverse effect on residential development. This effect is related more to costs associated with limiting the adverse environmental effects of housing rather than the opportunity costs of prohibiting housing. The significance to residential development warrants site by site analysis. Social Consequences of Limiting or Prohibiting Conflicting Uses The limiting or prohibiting of conflicting uses would have an adverse effect on education and housing, but a positive effect on public health, safety, and facilities. Projected traffic patterns would be only slightly improved, but recreational opportunities would be significantly enhanced. Environmental Consequences of Limiting or Prohibiting Conflicting Uses The limiting or prohibiting of conflicting uses would have a positive effect on the following ecologically significant forests, riparian areas, streams, wetlands, fish habitat, and wildlife habitat. Flood storage and desynchronization functions and groundwater recharge and discharge functions would be enhanced. Hazard areas would be avoided and heritage values would be protected. Minimum and maximum stream flows would be maintained within suitable ranges. Nutrient trapping and removal functions would be maintained and enhanced. Open space, recreation opportunities, and scenic values would be retained. Sediment trapping and shoreline anchoring functions would be enhanced. The erosive forces of flooding would also be dissipated. Water purity and water quantity would be maintained and eventually increased. Energy Consequences of Limiting or Prohibiting Conflicting Uses The limiting or prohibiting of conflicting uses would have a large positive effect on energy conservation if alternative sites could be found for the some of the unbuilt homes now allowed in the Balch Creek Watershed, provided that these alternatives are closer to downtown, would allow more dense development, or could be served by public transit. Page 74 Site Analysis Summaries Balch Creek Watershed Page 75 Site 73 • 0 """ '00' BALCH CREEKjNorth - Scale Natural Features Bureau of Planning • City ofPortland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 73 Area in and near the Lower Macleay Park Lavatories, Parking Lot, and Lawn Conflicting Uses: Identified conflicting uses on Site 73 include residential landscaping, park landscaping, and public storm water control facilities. The steep forested slopes of this site are heavily infected with ivy and clematis vines. Storm water controls block fish passage and degrade the aesthetic appeal and historic significance of an old sluice way. Housing Potential: The housing capacity of Site 73 is fully utilized with seven existing homes and no remaining potential. Since further residential development opportunities do not exist, new home construction can be prohibited without adverse economic consequences. A lot by lot housing analysis follows. Tax Account Comp Plan Acres Existine; Potential R-91340-2460" as 00.11 1 0 R-91340-2470 as 01.10 0 0 R-91340-256098 as 00.14 1 0 R-91340-257099 as 00.15 1 0 R-91340-2580100 as 00.15 1 0 R-91340-2590 as 00.11 0 0 R-91340-2600101 as 00.11 1 0 R-91340-2610 as 00.64 0 0 R-91340-2660102 as 00.09 1 0 R-91340-2670103 as 00.11 1 0 97. The Open Space Comprehensive Plan Designalion has been mistakenly applied to this 101; the correct designation is RS. 98. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is R5. 99. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is RS. 100. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is RS. 101. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is RS. 102. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is RS. 103. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is RS. Page 77 Site 74 • 0 '00 .00 BALCH CREEK! - -North Scale Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Site 74 Balch Creek Watershed Area in and near Lower Macleay Park South of the Lawn Conflicting Uses: Identified conflicting uses on Site 74 include agriculture, forestry, landscaping, housing, intensive recreation, shelters erected by homeless persons, maintenance of public streets, maintenance of public park trails, maintenance of public utilities, commuter traffic, trash dumping, and similar uses allowed by adjacent county zoning. Housing Potential: Site 74 contains five homes and no remaining housing potential. Protection of this site would have no adverse housing or economic effects. A lot by lot housing analysis follows. Tax Account Comp Plan Acres Existin~ Potential R-59030-0010 as 05.34 0 0 R-59030-0170 as 04.00 0 0 R-59030-0260 as 03.28 0 0 R-59030-0310 as 03.16 0 0 R-59030-0370 as 05.65 0 0 R-91340-3390 as 02.87 0 0 R-91340-3740 as 02.13 0 0 R-94129-0190 as 16.90 0 0 R-94129-0200 as 52.43 0 0 R-94131-0010 as 49.00 0 0 R-94132-03201U4 as 00.32 1 0 R-94132-0340 as 30.16 0 0 R-94132-0430 as 19.25 0 0 R-94132-08401U~ as 00.23 0 0 R-94132-08901Ub as 00.23 1 0 R-94132-10101U1 as 00.23 1 0 R-94132-10501U~ as 00.35 1 0 R-94132-11001UY as 00.36 1 0 104. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. 105. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. 106. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. 107. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. 108. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. 109. The Open Space Comprehensive Plan Designation has been mistakenly applied to this lot; the correct designation is Farm and Forest. Page 79 Site 75 • j 200' '00 BALCH CREEKNorth Scale Natural Features Bureau of Planning. City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 75 Area in and near the Portland Audubon Society's Pittock Sanctuary Conflicting Uses: Identified conflicting uses on Site 75 include agriculture, forestry, landscaping, commercial type activities occurring under conditional use permits, intensive recreation, maintenance of public streets, maintenance of public utilities maintenance of public private trails, commuter traffic, withdrawal of creek water for educational purposes, trash dumping, and adjacent county zoning allowing similar uses. Water withdrawals, too many trails, poor trail design, poor trail locations, and invasive nonnative plants are particular problems on this site. Housing Potential: Site 75 has no houses and no remaining housing potential. A lot by lot analysis follows. Tax Account Comp Plan Acres Existinl!; Potential R-94131-0170 FF and as 22.20 0 0 R-94131-0570 as 00.36 0 0 R-94131-0690 FF 00.18 0 0 PageS1 Site 76 e 0 200' '00· BALCH CREEKINorth - Scale Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 76 Area Between Cornell Road Tunnels, and in and near Upper Macleay Park Conflicting Uses: Identified conflicting uses include agriculture, forestry, landscaping, housing, intensive recreation, maintenance of public streets, maintenance of public utilities, maintenance of public park trails, commuter traffic, trash dumping, and similar uses allowed by county zoning. Invasive problem plants include holly, laurel, ivy, and clematis. Housing Potential: Site 76 contains nine homes with a potential for twenty-one more. A lot by lot analysis follows. Tax Account Comp Plan Acres Existinll; Potential R-45200-4230 OS 01.26 0 0 R-45200-4450 OS 01.11 0 0 R-55150-0010 R7 00.23 0 1 R-55150-0020 R7 00.19 0 1 R-55150-0030 R7 00.23 0 1 R-55150-0050 R7 00.99 1 5 R-82460-0320 R7 01.78 1 3 R-94131-0010 OS 45.00 0 0 R-94132-0350 OS 13.33 0 0 R-94132-0360 OS 17.16 0 0 R-94132-0570 OS 13.80 1 0 R-94132-0640 OS 01.80 0 0 R-94132-0910 R7 01.29 0 0 R-94132-0930 R7 00.34 1 1 R-94132-0940 R7 00.39 1 1 R-94132-0960 R7 00.40 1 1 R-94132-1030 R7 00.29 1 0 R-94132-1040 R7 00.70 1 3 R-94132-1090 R7 00.44 1 1 R-94132-1260 R7 00.42 0 2 Page 83 Site 77 • 0 200' '00' BALCH CREEK,North Scale Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 77 Area West of Cornell Road Tunnels in or near Adams and Upper Macleay Parks Conflicting Uses: Identified conflicting uses include agriculture, forestry, landscaping, housing, intensive recreation, maintenance of public streets, maintenance of public park trails, maintenance of public utilities, community gardening, commuter traffic, trash dumping, and similar uses allowed by county zoning. Problem invasive plants include English laurel and tansy ragwort. Housing Potential: Site 77 has three homes and no remaining housing potential. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential R-94131-001O as 10.00 0 0 R-94131-0140 FF 00.74 0 0 R-94131-0190 as 06.91 0 0 R-94131-0390 as 02.87 0 0 R-94131-0550 FF 01.90 1 0 R-94131-0640 FF 02.09 1 0 R-94131-0650 FF 00.27 0 0 R-94131-0660 as 00.09 1 0 Page 85 Site 78 NZth ~ s=:~ <00' BALCH CREEK Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 78 Area of New Construction near Audubon Caretaker House Conflicting Uses: Identified conflicting uses include agriculture, forestry, landscaping, housing, maintenance of public streets, maintenance of public utilities, maintenance of a long private drive way, commuter traffic, and similar uses allowed by county zoning. Housing Potential: Site 78 has one house built in 1990 and the potential for two more. The site has two lots in common ownership, which if consolidated would provide for three rather than two additional homes. The lots are analyzed in the chart below. Tax Account Comp Plan Acres Existing Potential R-94131-0240 FF 07.76 1 2 R-94131-0620 FF 00.38 0 0 PageS7 ·Site 79 .e 1 200' '00' BALCH CREEKNorth _ Scale Natural Features BureauofPJanning' City of Portland WATERSHEDPROTECTIONPLAN Balch Creek Watershed Site 79 Areas near intersection of Barnes Road and Hilltop Drive Conflicting Uses: Identified conflicting uses on Site 79 include agriculture, forestry, landscaping, housing, maintenance of public and private streets, maintenance of public utilities, traffic, trash dumping, and similar uses allowed by adjacent county zoning. Housing Potential: Site 79 contains six homes with the potential for five more. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential R-39000-0010 FF 07.70 1 2 R-39000-0IOO FF 04.70 I I R-94131-0270 FF 00.89 0 0 R-94131-0340 FF and RIO 04.51 0 2 R-94131-0350 FF 00.99 I 0 R-94131-0420 FF 00.99 I 0 R-94131-0490 FF and RIO 02.50 I 0 R-94131-0630 FF 00.96 0 0 R-94131-0760 FF 01.40 0 0 R-94131-0770 FF 00.82 0 0 R-99106-271 0 FF 00.97 1 0 Page 89 Site 80 ~!t~ ~ s:~~ '00' BALCH CREEK Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 80 Area in or near the Proposed Pittock Place, Planned Unit Development Conflicting Uses: Identified conflicting uses on Site 80 include agriculture, forestry, landscaping, housing, maintenance of public streets, maintenance of public utilities, trash dumping, and similar uses allowed by county zoning. Housing Potential: Site 80 contains two houses. Comprehensive Plan designations would allow fifty-seven more. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential R-94131-0250 R20 00.23 0 0 R-94131-0280 R20 05.14 1 10 R-94131-0580 R20 07.17 0 15 R-94131-0610 R20 00.23 0 0 R-94131-0700 R20 12.28 0 26 R-99106-3070 R20 03.04 0 6 R-99106-3080 R20 00.72 1 0 Page 91 Site 81 e 0 200' '00' BALCH CREEK!North Scale Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 81 Area in Mount Calvary Cemetery Conflicting Uses: Identified conflicting uses on Site 81 include agriculture, forestry, landscaping, housing, commercial type cemetery activities occurring under conditional use permits, maintenance of public and private streets, maintenance of public utilities, and similar uses allowed by county zoning. Housing Potential: Site 81 has no houses and no housing potential under existing Comprehensive Plan designations. The site is three lots in one ownership. A chart follows. Tax Account Comp Plan Acres Existinl!; Potential R-94131-0100 OS 10.25 0 0 R-94131-0110 OS 09.85 0 0 R-94131-0070 OS 44.70 0 0 Page 93 Site 82 NZh _ Y s:~ '00' BALCH CREEK Natural Features Bureau o[Planning· City o[Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 82 Area in or near the Royal Highlands and Barnes Park Subdivisions Conflicting Uses: Identified conflicting uses on Site 82 include agriculture, forestry, landscaping, housing, maintenance of public streets, maintenance of public utilities, operation and maintenance of a private sewage treatment plant, trash dumping, and similar uses allowed by county zoning. Housing Potential: Site 82 contains twenty-six homes. Existing Comprehensive Plan designations would allow forty-nine more homes. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential R-05530-0980 R20 01.90 1 3 R-05530-1020 R20 01.53 0 3 R-05530-1060 R20 00.45 1 0 R-05530-1090 R20 03.25 0 7 R-05530-1100 R20 00.59 1 0 R-05530-1120 R20 00.30 0 0 R-05530-2070 R20 01.61 1 2 R-05530-2120 R20 04.36 1 8 R-05530-2180 R20 01.38 1 2 R-05530-2220 R20 00.67 1 0 R-05530-2240 R20 00.47 1 0 R-05530-2260 R20 00.79 0 1 R-05530-2310 R20 00.69 0 1 R-05530-2340 R20 00.48 1 0 R-05530-2360 R20 00.40 0 0 R-73100-001O R20 00.12 1 0 R-73100-0030 R20 00.29 1 0 R-73100-0050 R20 00.83 1 0 R-73100-0150 R20 00.60 1 0 R-73100-0200 R20 01.17 1 2 R-73100-0300 R20 00.36 1 0 R-73100-0340 R20 00.41 0 0 R-73100-0380 R20 00.65 0 1 R-73100-0420 R20 00.60 0 1 R-73100-0460 R20 00.56 0 1 R-73100-0500 R20 00.37 0 0 R-73100-0530 R20 00.28 0 0 R-73100-0560 R20 00.34 0 0 R-73100-0600 R20 00.33 1 0 R-73100-0640 R20 00.30 1 0 Page 95 Balch Creek Watershed Site 82 (Continued) Tax Account Comp Plan Acres Existm~ Potential R-73100-0680 R20 00.44 0 0 R-73100-0nO R20 00.47 0 1 R-73100-0760 R20 00.46 1 0 R-73100-0800 R20 00.44 0 0 R-73100-0840 R20 00.34 0 0 R-73100-0880 R20 00.40 0 0 R-73100-0920 R20 00.34 0 0 R-73100-1000 R20 00.36 1 0 R-73100-1040 R20 00.71 1 0 R-73100-1090 R20 00.35 1 0 R-73100-1130 R20 00.52 1 0 R-73100-1170 R20 00.68 0 1 R-73100-1210 R20 02.29 0 4 R-73100-1310 R20 00.75 0 1 R-73100-1350 R20 00.52 0 1 R-73100-1390 R20 00.50 0 1 R-73100-1430 R20 00.55 1 0 R-73100-1470 R20 00.50 0 1 R-73100-1510 R20 00.50 0 1 R-73100-1550 R20 00.38 0 0 R-73100-1590 R20 00.64 0 1 R-73100-1630 R20 00.67 0 1 R-73100-1670 R20 00.56 0 1 R-73100-1710 R20 00.63 0 1 R-96136-1790 R20 01.49 1 2 R-96136-1800 R20 00.69 1 0 R-96136-1810 R20 00.87 1 0 Page 96 Site 83 • 0 200' .00· BALCH CREEKiNorth Scale Natural Features Bureau of Planning' City ofPortland WATERSHED PROTECTION PLAN 10D Balch Creek Watershed Site 83 Area near Intersection of Greenleaf and Cornell Roads Conflicting Uses: Identified conflicting uses include agriculture, forestry, landscaping, housing, commercial development, maintenance of public streets, maintenance of public utilities, trash dumping, and similar uses allowed by county zoning. This is the only site in the Balch Creek Watershed with commercial zoning. The residential density and lot coverage provisions of C2 zoning would cause severe damage to identified resources. Housing Potential: Site 83 has four homes. Comprehensive Plan designations would allow one hundred more. Sixty-five of these allowed residences would be on two lots with C2 Comprehensive Plan designations. This zoning allows multifamily attached dwellings at Rl density. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential Unassigned A FF 00.98 0 1 Unassigned B FF 00.99 0 1 Unassigned C FF 01.64 0 1 Unassigned 0 FF 02.13 0 1 Unassigned E FF 05.56 0 1 Unassigned F FF 02.12 0 1 Unassigned G FF 02.15 0 1 R-17870-0250 RIO 04.12 1 7 R-17870-0290 C2 00.74 0 32 R-17870-0330 R20 00.60 1 0 R-17870-0380 R20 andC2 02.92 0 6 R-59040-0300 FF 00.3411u 0 1 R-96125-0130 FF 16.34 0 8 R-96125-0140 FF 01.70 0 0 R-96136-0010 FF,R20,C2 15.20 0 23 R-96136-1760 C2 and R20 01.37 0 2 R-96136-1770 FF 02.09 0 1 R-96136-1830 FF 04.99 0 2 R-96136-1850 FF 02.01 1 0 R-96136-1860 FF 02.02 0 1 110. A variance (VZ 60-89) allows one house on 15,000 square feet of area for this lot only in a Farm and Forest zone. The Farm and Forest zone requires a two acre (87,120 square feet) minimum lot size. Page 99 Site 84 -.. 0 200' '00' BALCH CREEK, ScaleNorth Natural Features Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 84 Area near Skyline and Thompson Roads Conflicting Uses: Identified conflicting uses on Site 84 include agriculture, forestry, landscaping, housing, maintenance of public and private streets, maintenance of public utilities, trash dumping, and similar uses allowed by county zoning. Housing Potential: Site 84 contains two houses with the potential for twenty-three more. A lot by lot analysis follows. Tax Account Comp Plan Acres Existing Potential Unassigned H FF 00.61 0 1 Unassigned I FF 00.36 0 1 Unassigned J FF 00.50 0 1 Unassigned K FF 00.77 0 1 Unassigned L FF 01.50 0 1 Unassigned M FF 01.43 0 1 Unassigned N FF 06.15 0 1 Unassigned a FF 02.14 0 1 Unassigned P FF 00.93 0 1 Unassigned Q FF 12.76 0 4 R-77380-0410 RIO 00.35 1 0 R-96125-0070 FF 00.30 1 0 R-96125-0080 FF 01.96 0 0 R-96125-0670 FF 00.78 0 0 R-96125-0790 FF 06.00 0 3 R-96125-0910 FF 00.53 0 0 R-96125-0970 FF 15.00 0 7 Page 101 Site 85 NSh _ . j':" .~ BALCH CREEK Natural Features Bureau of Planning • City of Portland WATERSHED PROTECTION PLAN loLl Balch Creek Watershed Site 85 Area in and near Forest Park Between Thompson Road and 53rd Avenue Conflicting Uses: Identified conflicting uses on Site 85 include agriculture, forestry, landscaping, housing, maintenance of park trails, intensive recreation, maintenance of public streets, maintenance of public utilities, trash dumping, and similar uses allowed by county zoning. Housing Potential: Site 85 contains one house. It has no further housing potential under current Comprehensive Plan designations. Tax Account Comp Plan Acres Existing Potential R-59030-1860 as 15.00 0 0 R-59030-2100 as 14.27 0 0 R-59030-2340 as 06.19 0 0 R-59030-2660 os 12.37 0 0 R-59030-2910 as 02.60 0 0 R-59030-3310 as 07.03 0 0 R-59030-3510 FF 03.00 1 0 R-59030-3560 as 02.70 0 0 R-59030-3610 as 03.00 0 0 R-59030-4010 as 06.00 0 0 R-59030-4014 as 06.00 0 0 Page 103 REGULATIONS Balch Creek Watershed Page 105 Balch Creek Watershed General Summary New regulations are needed to limit and prohibit conflicting uses in the Balch Creek Watershed. High resource values and functions warrant a high degree of protection. Significant watershed resources include a full year stream, an isolated population of cutthroat trout, and old conifer forests. The regulations listed below can accomplish the needed protection with a net reduction of only one home site. Protection is accomplished by directing residential development away from the center of the watershed and toward the least sensitive edge. The regulations are designed to preserve watershed functions and values as a whole. By preserving storm water and erosion control functions and fish and wildlife habitat values, site specific resources such as streams and forests are also preserved. The regulations do this by carrying out four management objectives. These objectives are the product of the preceding inventory of resources and preceding analysis of conflicting uses. All applicable policies of Oregon land use law and the Portland Comprehensive Plan are met through these objectives. The objectives are: • Maintain Balch Creek Cutthroat Trout These fish should be maintained in all of their present range and at population of at least 2,000. Opportunities for stream enhancement should also be maintained. • Maintain a Wildlife Corridor between Forest Park and Pittock Acres Park. Contiguous forest and contiguous forest cover should be maintained as habitat and a corridor sufficient for of deer and elk. • Limit Floods. The frequency and severity of flooding in Macleay Park and the Northwest industrial area should not increase. Opportunities to reduce the severity and frequency of flooding should also be maintained. • Protect Streams and Forests. All full year streams, intermittent streams, ravine bottoms, springs, and all significant ground water recharge areas should be protected; significant conifer forests and significant mixed broad-leafed and conifer forests should also be protected. Protection Plan Implementing Measures The following regulations are needed to carry out these objectives: • Adopt One New Goal 8 Comprehensive Plan Policy. Page 107 Balch Creek Watershed • • • • • • • • Change One Existing Goal 2 Comprehensive Plan Policy. Replace the Natural Resource Overlay Zone Chapter of the January 1, 1991, City Zoning Code with a Future Urban Overlay Zone. Add Special Use Restrictions, Development Standards, and Approval Criteria to the Environmental Zones Chapter of the January 1, 1991 City Zoning Code. Change Several Existing Comprehensive Plan Designations. Change Several Existing Base Zones. Apply the Natural Resource Overlay Zone (recommended Future Urban Overlay Zone). Apply the Environmental Natural Overlay Zone (Environmental Protection Overlay Zone in the January 1, 1991, City Zoning Code). Apply the Environmental Conservation Overlay Zone. The following existing regulations are not needed to carry out the objects, and should be repealed because they are made obsolete or unnecessary by the new regulations, or because they were erroneously applied when first adopted: • • • Repeal Stream Feature Designations. Repeal Site Review Overlay Zones. Repeal Open Space Designations on Residential Properties. The following is the regulatory language needed to protect Balch Creek Watershed resources: Change Policy 8.11 Change Goal 8.11 of the Portland Comprehensive Plan by adding a new policy for the Balch Creek Watershed. The existing policy reads, "8.11 Vlillamette River Greenway Preted and preserve the natural and eeenemie qualities ef lands aleng the Willamette River threugh implementatien ef the City's Vlillamette River Greenway Plan." Change this policy to read, "8.11 Special Areas Page10B Balch Creek Watershed Recognize unique land qualities and adopt specific planning objectives for special areas. A. Willamette River Greenway Protect and preserve the natural and economic qualities of lands along the Willamette River through implementation of the City's Willamette River Greenway Plan. B. Balch Creek Watershed Protect and preserve fishery, wildlife, flood control, and other natural resource values of the Balch Creek Watershed through the application of special development standards and approval criteria in the environmental overlay zones." Change Policy 2.5 Current Comprehensive Plan policy limits the application of the Natural Resource overlay zone (recommended Future Urban overlay zone) to lands which are both within the City and beyond the Urban Growth Boundary. Both of these overlay zone limits the minimum area of new lots to 20 acres. In special cases this limit should also apply within the Urban Growth Boundary. Such a case is the portion of the Balch Creek Watershed, which is within both the City and the Urban Growth Boundary, but has no access to a sewer line. Providing a sewer to this area would be costly and would do great harm to the environment. The minimum area of new lots in this portion of the watershed should be limited to twenty acres. The application of the Natural Resource overlay zone is, however, governed by Comprehensive Plan Policy 2.5 which reads, "2.5 Nahll'al Resauree .....rea Limit eJEtensian af development related faeilities, eJEeept for reasons of publie health and safety, in areas designated Natural Resouree an the Land Use Framework Map adapted by the Metropolitan Serviee Distriet." It should also be noted that the existing policy makes references to a map which has been superseded by the Comprehensive Plan maps and zoning maps of Portland and the other metropolitan jurisdictions. Change the existing policy 2.5 to read, "2.5 Future Urban Areas Do not extend urban services to areas within the Urban Services Boundary which are designated future urban areas. Provide exceptions only to correct declared health hazards and violations of pollution control laws. Page 109 Balch Creek Watershed Objectives: A Future Urban Area Designate, as future urban areas, (1) all areas beyond the Urban Growth Boundary, and (2) areas within the Urban Growth Boundary for which the extension of services would not be cost effective or would not be environmentally acceptable as determined by a detailed facility study. B Replacement Areas Identify areas which could replace areas designated pursuant to (A) (2) above, and cooperate with the Metropolitan Service District and interested city and county governments to include these areas within the Urban Service Boundary." Replace the Natural Resource Overlay Zone with the Future Urban Overlay Zone Change the January 1, 1991, City Zoning Code to carry out amended Policy 2.5 above. The January 1, 1991, code now reads, "CHl.PTER 33.460 NATURAL RESOURCE ZONE Seetions: 33.4,6Q.010 Pmpose 33.4";0.020 Map Symbol 33.46Q.030 !'.pplying and Removing the Zone 33.460.040 Minimum Lot Area 33.460.010 Pmpose The Natural Resoul'ee overlay zone limits development in the Natural Resoul'ee area outside of the Metropolitan Serviee Distriet's adopted Urban Gl'Owth Boundary (DGB). This is aehieved by limiting the minimum area of new lots to 20 aeres. 33.460.020 Map Symbol The Natmal ResoUl'ee zone is shown on the Offieial Zoning Maps with an "f" map symbol (for forest). 33.460.030 ,A.pplying and Removing the Zone Page 110 Balch Creek Watershed The Natural Resouree zone must be applied to all lands designated "Natural Resouree" on the Metro Regional Land Use Framework Map. "'/hen the UGB is expanded to inelude Natural Resouree zoned land, the Natural Resouree ZORe is to be removed from that land following the zoning map amendment proeedures in 33.855.080. 33.460.040 Minimum Lot .".rea The minimum lot area for the ereation of new lots in the Natural Resouree zone is 20 aeres. ElEisting lots of less than 20 aeres may be developed, but may not be redueed in area." Change the January 1, 1991, code to read, "CHAPTER 33.435 FUTURE URBAN ZONE Sections: 33.435.010 Purpose 33.435.020 Map Symbol 33.435.030 Applying and Removing the Zone 33.435.040 Minimum Lot Area 33.435.010 Purpose The Future Urban overlay zone limits development in future urban areas. Future urban areas are, (1) all areas beyond the the Metropolitan Service District's Urban Growth Boundary (UGB), and (2) areas within the UGB to which the extension of full urban services would not be cost effective or would cause unacceptable harm to the environment. The Future Urban overlay zone limits development by prohibiting the creation of new lots with a total area of less than 20 acres. 33.435.020 Map Symbol The Future Urban zone is shown on the Official Zoning Maps with an "1' map symbol (for future). 33.435.030 Applying and Removing the Zone The Future Urban zone must be applied to all lands designated "Natural Resource" on the Metro Regional Land Use Framework Map. When the UGB is expanded to include Future Urban-zoned land, the Future Urban zone Page 111 Balch Creek Watershed is to be removed from that land following the zoning map amendment procedures in 33.855.080. 33.435.040 Minimum Lot Area The minimum lot area for the creation of new lots in the Future Urban zone is 20 acres. The creation of new lots of less than 20 acres is prohibited. Existing lots of less than 20 acres may be developed, but may not be reduced in area." Change existing Comprehensive Plan and Zoning Designations Change several existing Comprehensive Plan and Zoning Designations. Charts and maps of these changes follow in the individual site summaries. These changes are recommended under the existing code but would probably not take effect until after the January 1, 1991, effective date of the new City Zoning Code. Under the new code the Open Space (OS) Comprehensive Plan designation would become the Open Space (OS) base zone, This would have the effect of (OS)FF, (OS)R20, (OS)RI0, (OS)R7, and (OS)R5 base zones under the existing code all becoming OS base zones under the new code. The Farm and Forest (FF) base zone under the existing code would become the Residential Farm and Forest (RF) base zone under the new code. The single example of the Commercial Four (C4) base zone in the Balch Creek Watershed would become a Neighborhood Commercial Two (CN2) base zone under the new code. The Environmental Natural (en) overlay zone in the existing code would become the Environmental Protection (p) overlay zone in the new code. The Environmental Conservation (ec) overlay zone in the existing code would become Environmental Conservation (c) overlay zone in the new code. Finally, the Natural Resource (m) overlay zone in both the existing code and the present version of the new code would become the Future Urban (f) overlay zone if the recommendations of this plan were adopted. For the sake of simplicity, only existing zone designations are used in maps and charts. The following is a summary of the recommended comprehensive plan map zone map changes: • • • Redesignate Commercial Property Change the C2 Comprehensive Plan designation on parts of three properties to FF, and change the C2 Comprehensive Plan Designation for all of another property to C4. Redesignate Residential Property Change the R20 Comprehensive Plan designation to FF on one property, and change the R7 Comprehensive Plan Designation to OS on three properties. Remove Open Space Designations Page 112 Balch Creek Watershed Change the OS Comprehensive Plan designation to R5 on seven properties. The original application of this designation was an error. • Increase Future Housing Density in Some Areas Change the R20 Comprehensive Plan designation to RIO on 17 properties. • Lower Level of Commercial Development Change the C2 base zone for one property to C4. • Decrease Future Housing Density in Other Areas Change the R7 Comprehensive Plan Designation to FF on three properties and change the R5 Base Zone Designation to FF on three properties. • Discontinue Site Review Remove the Site Review (sr) overlay zone from all properties in the Balch Creek Watershed. Site review is not needed in conjunction with environmental review. • Replace Stream Features Amend the City Map of Stream Features to removed all stream feature designations from the Balch Creek Watershed. Environmental overlay zones provide more protection to Balch Creek and its tributaries than existing stream feature designations. • Limit future lot sizes Apply the Natural Resource (nr) overlay zone to 39 properties zoned FF. • Preserve Natural Resources Apply the Environmental Natural (en) overlay zone completely to 13 properties and partially to 91 properties. Little or no development will be allowed in en zones. Allowed development will comply with special development standards and approval criteria. • Conserve Natural Resources Apply the Environmental Conservation (ec) overlay zone completely to 65 properties and to the remainder of the 91 properties with partial en zoning. Most development allowed by base zones will be allowed in ec zones. Allowed development will comply with special development standards and approval criteria. Page 113 Balch Creek Watershed Adopt New Use Restrictions, Development Standards, and Approval Criteria. One use restriction, two development standards, and four approval criteria are needed to protect Balch Creek Watershed resources. These standards and criteria will provide certainty to developers and ensure consistency of environmental reviews. Only those proposed developments that are in accord with the criteria will be approved, and approved developments will abide by uniform standards. Adopt the following as amendments to Chapter 33.430.100, .200, .330 and .340 of the January I, 1991, City Zoning Code: 33.430.100 Uses Allowed A. Review required. Uses and development allowed by the base zone, overlay zone, and plan district regulations are allowed in the environmental zones if they comply with the development standards and are approved through an environmental review. The amount and placement of development may be restricted to ensure conformance with the regulations of this chapter. B. Hazardous substances. Hazardous substances greater than the consumer commodity quantity are prohibited in the environmental zones. See 33.140.120 for descriptions of hazardous material quantities. C. Balch Creek Watershed. In the Balch Creek Watershed, residential dn'elopment is prohibited in commercial zones. 33.430.200 Development Standards The development standards of this section apply to all transition and natural resource areas. A. Building placement. This standard is intended to protect adjacent natural resource areas by allowing for solar access and controlling the scale and bulk of buildings near natural resources. A building or structure up to 25 feet in height may be placed up to the boundary of the natural resource area. A setback from the natural resource arca boundary of at least 1 foot for every 1 foot in height over 25 fcct is required. B. Parking and truck areas. These regulations are intended to provide a transition between the natural resource area and development, to assist in controlling runoff, and to protect the visual amenity values of the natural resource. 1. Auto and light truck areas. Parking areas for autos and light trucks must be set back at least 10 feet from natural resource area boundaries. The setback must be landscaped to at least the Page 114 Balch Creek Watershed L2 standard, as stated in Chapter 33.248, Landscaping and Screening. 2. Medium and heavy truck areas. Parking, loading, and maneuvering areas for medium and heavy trucks must be set back at least 10 feet from natural resource area boundaries. The setback must be landscaped to at least the L3 standard. C. Exterior work activities. Exterior work activities are prohibited unless in conjunction with a river-related or river·dependent use. D. Exterior storage and display. Exterior storage and display areas must be set back at least 10 feet from resource area boundaries. The setback must be landscaped to at least the L3 standard. E. Drainage and topography. 1. The site must be contoured, planted, or developed to prevent erosion, pollution, and sedimentation into the adjacent natural resource area. 2. The Bureau of Environmental Services may require water pollution mitigation measures as a condition of approving the discharge of runoff into a natural resource or into a stormwater drainage facility which discharges into a natural resource. Preferred treatment is with natural pollution control systems compatible in character with the natural resource. The type of mitigation measure or facility, will be determined by the Bureau of Environmental Services. F. Landscape materials. 1. The first 10 feet of landscaping, measured from the natural resource boundary line, must be planted with plant species native to the Willamette Valley or to the Pacific Northwest. Allowable plant species are described in Section IV.C, Landscaping, of the Willamette Greenway Plan. This requirement applies to all landscaping whether required or optional. 2. The standard in Paragraph 1. above does not apply where the identified natural resource does not include native plant species as a characteristic or value. In these cases, landscaping may be similar in type and character to that in the natural resource area. G. Lighting. Exterior and interior lights must be placed so that they do not shine directly into natural resource areas. H. Trash collection areas. Outdoor trash collection areas are prohibited. Page 115 Balch Creek Watershed I. Noise. Buildings must be placed and constructed to meet the noise standards for nonresidential development adjacent to residential zones. See Title 18, Nuisance Abatement and Noise Control. J. Construction management. Construction must be done in a manner which will ensure that the remainder of the site with Environmental zoning will not be adversely impacted. K. Balch Creek Watershed. In the Balch Creek Watershed the following additional development standards apply: 1. Development Season. All ground disturbing activities regulated by this chapter must take place between May 1 and September 30 of any year. Any activity which exposes soil to direct contact with stormwater between October 1 and April 30 is prohibited. An exception to this standard allows emergency repair of existing structures during any time of year. 2. Prohibited Plants. The propagation of Himalayan Blackberry (Rubis discolorl, English Ivy (Hew helixl, Western Clematis (Clematjs lingustjcifloral, Traveler's-Joy (Clematis vitalbal or any plant identified as a nuisance plant on the Portland Plant LiH...is prohibited. 33.430.330 Supplemental Application Requirements All of the information listed below must be included with an environmental review application, in addition to the standard application requirements of 33.730.060. A. Special site plan requirements. 1. The site plan must clearly show the boundaries of the natural resource area and the transition area at a scale of at least 1 inch for every 100 feet. Location of the environmental zone is based upon the maps adopted with the ESEE analysis for the area. 2. Additional site plan requirements. In addition, the site plan must show: • Proposed site contouring; • Proposed stormwater management and disposal; • Existing or proposed, above or below ground utilities; • Proposed right-of-way dedication; • All trees greater than six inches in diameter measured at five feet above the ground. As an option to showing all trees greater than 6 inches in wooded areas not being disturbed, the crown cover outline can be shown; • Other vegetation cover types, general distribution, and identification of vegetation affected by the proposed project; • Existing floodplains and elevations; • Proposed sanitary waste disposal systems; and Page 116 Balch Creek Watershed • Proposed recreational trails, viewpoints, and outdoor recreational spaces. • Erosion control features to be employed during construction. B. Additional plans and analyses. The folIowing information is required in either a site plan or narrative form, or in a combination of the two: 1. A construction management plan showing enough detail to fulIy address the concerns described in 33.430.210.J. above. The plan should address the handling of construction equipment, construction materials, excess filI, runoff, erosion, how trees and vegetation will be protected, and similar items; 2 . If the development is proposed for a transition area, a detailed description of any proposed on-site or off-site mitigation measures; 3. An impact evaluation if the development is proposed for a natural resource area, See 33.430.350. If the impact evaluation shows that there will be a degradation or loss of functional values, a mitigation plan will also be required. See 33.430.360. C. Balch Creek Watershed site plans. In addition to the requirements stated above, site plans in the Balch Creek Watershed must show vegetation to remain, vegetation to be removed during construction, and vegetation to be reestablished. 33.430.340 Approval Criteria An environmental review application will be approved if the review body finds that the applicant has shown that all of the applicable approval criteria stated below are met. A. Recreational trails. 1. Which approval criteria apply. Recreational trails to be located outside of a natural resource area are subject to the approval criterion stated in Paragraph 2. below. Recreational trails to be located in a natural resource area in the EP and EC zones are subject to the approval criteria stated in Subsection E. below. 2. Approval criterion. Trails, rest points, view points, and other facilities constructed for the enjoyment of the natural resource limit and balance significant detrimental environmental impacts with the potential for enjoyment of the natural resource. B. Resource enhancement projects. Resource enhancement projects must have adequate mitigation measures to ensure that there will be no net loss of natural resources and functional values and that the objectives of the enhancement project will be achieved. Page 117 Balch Creek Watershed C. Excavations and fills. Excavations and fills are subject to the approval criteria of Subsections D, E, or F below and the approval criteria for excavations and fills stated in Chapter 33.830, Excavations and Fills. D. Development in transition areas. 1. Development within the the transition area will have no significant detrimental environmental impacts on adjacent natural resource areas due to any change of drainage patterns, erosion, sedimentation, hazardous material spills, litter, or exterior lighting. 2. Existing trees and other vegetation are retained to the greatest extent possible. 3. The proposed construction management plan is adequate to protect the adjacent natural resource area. E. Development in natural resource areas in the EC zone. 1. The proposal has as few significant detrimental environmental impacts on functional values as is practical. 2. All identified significant detrimental environmental impacts on the functional values will be compensated for through a mitigation plan. 3. Proposed construction management measures are adequate to protect remaining natural resource areas during the construction period. F. Development in natural resource areas in the EP zone. 1. There are no alternative sites available within the City that are suitably zoned to allow the proposal and that would have less impact on natural resources. 2. The applicant's analysis of the economic, social, environmental, and energy consequences (ESEE) of the proposal is able to show that the City's prior ESEE analysis for the site is no longer valid due to a change in the factors considered. The applicant's ESEE analysis also clearly demonstrates that there is a public need for the proposal in the natural resource, and that the public benefit resulting from the proposal outweighs the significant detrimental environmental impacts on the natural resource. 3. All significant detrimental environmental impacts on the functional values will be compensated for through a mitigation plan. 4. Proposed construction management measures are adequate to protect remaining natural resource areas during the construction period. Page 118 Balch Creek Watershed G. Development in the Balch Creek Watershed. In addition to the approval criteria stated above, the following approval criteria must also be met in resource areas and transition areas in the Balch Creek Watershed: 1. Fish. Balch Creek cutthroat trout must be maintained in a range at least as extensive as their range in 1987 and at population of at least 2,000. Opportunities for stream enhancement must also be maintained. 2. Wildlife. The location, quantity, and quality of forest and contiguous forest cover must be sufficient to provide habitat for deer and elk and to provide for the passage of deer and elk between Forest Park and Pittock Acres Park. 3. Stormwater Runoff. The frequency and severity of flooding in Macleay Park and the Northwest industrial area must not increase. Post-development flows must not exceed pre- development flows. Flow calculations must be based on a typical Portland area 25 year, 24 hour storm and be made in accord with the methods described in the United States Department of Agriculture, Soil Conservation Services', Technical Release 55, Urban Hydrolovv for Small Watersheds. Private stormwater control facilities must have an operation and maintenance plan. 4. Soil Erosion. Erosion control features effective as those described in the City of Portland's and Washington County's joint Erosion Control Plans Technical Guidance Handbook must be employed during all ground disturbing construction. Site clearing must be limited to the minimum necessary for construction. All cleared areas which are not within a building foundation or a graveled entrance way must be covered with mulch, matting, or other effective erosion control features within fifteen days of the initial clearing. Temporary erosion control features must be removed by October first of the same year the development was begun. All permanent vegetation must be seeded or planted by October first of the same year the development was begun, and all soil not covered by buildings or other impervious surfaces must be completely vegetated by December first of the same year the development was begun. 5. Forest Cover. Ninety percent of the portion of development sites in environmental zones must be retained or established in closed canopy forest. An exception to this standard allows 3,000 square feet of unforested area for sites less than 30,000 square feet in total area. Planned unit developments, subdivisions, and clustered subdivisions must combine ninety percent of the portion of their plat within environmental zones into forested common open space. The planting of trees and shrubs for forest restoration, forest establishment, or landscaping must be done with native plants, but not with red Page 119 Balch Creek Watershed alder or big-leaf maple. This standard allows the granting of adjustments to allow up to twenty percent of the total area to remain unforested provided that approval criteria (1), (2), (3), and (4) above are met. Natural Resource Management Plans The Planning Bureau recognizes that natural resource management plans might be an appropriate, and in some cases a superior, alternative for limiting conflicting uses within the Balch Creek Watershed. These plans are provided for and encouraged by Policy 8.18 of the Comprehensive Plan, Section 33.430.370 of the January 1, 1991, City Zoning Code. If proposed by an interested business, organization, or agency, and if approved by the Planning Commission and the City Council, the provisions of these plans would supersede the environmental zoning regulations described above. The Planning Bureau believes that the following natural resource management plans would be most appropriate: • Parks Bureau Portions of Adams, Forest, Holman, Pittock, and Mac1eay Parks would fall within conservation or preservation zones. Issues concerning the lo!,ation, design and maintenance of trails, parking lots, overlooks, lavatories, and landscaping would be better addressed through a plan rather than case-by-case reviews. • Maintenance Bureau Portions of rights of way for N.W. Cornell, Greenleaf, and Thompson Roads, N.W. Skyline Boulevard, and N.W. 53rd Avenue would fall within conservation zones. Since road maintenance occurs in accord with specifications and schedules, simple modifications of existing practices would be the basis for a management plan. • Portland Audubon Society The Portland Audubon Society manages its lands for both resource protection and environmental education. Audubon society lands would fall within conservation and preservation zones. A management plan would provide a unique opportunity to balance education and conservation objectives and to coordinate management with adjacent park land. • Mount Calvary Cemetery Cemeteries are unique uses of open space which require extensive areas of landscaping and can require large structures. Maintenance and construction of these facilities would be better addressed through a management plan than case-by-case reviews. Page 120 Balch Creek Watershed Site Regulation Summaries Page 121 '1110 (R5) /' , , , , , I, , I, I, , , , , , , , , , ,. ,··i:~~:t·;;1f~~~74:~ix·f~1~~~~· .... Site 73 ~e 0 200· '00· BALCH CREEKINorth Scale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 73 Area in and near the Lower Macleay Park Lavatories, Parking Lot, and Lawn New Overlay Zones Housing Potential Change ec, en, and nr None Tax Account Base Zone Overlay Zones Comp Plan Housinp; R-91340-2460 R5 ec R5 no change R-91340-2470 FF ec and en as no change R-91340-2560 R5 ec and en R5 no change R-91340-2570 R5 ec and en R5 no change R-91340-2580 R5 ec and en R5 no change R-91340-2590 FF ec and en as no change R-91340-2600 R5 ec and en R5 no change R-91340-2610 FF ec and en as no change R-91340-2660 R5 ec and en R5 no change R-91340-2670 R5 ec R5 no change Page 123 ,-- ------'!', ~ • < • 101 ~j "o < ,c: (l) ~ c U. U. c: ClJ ~ c: u. u. ~ if.) 0 ~ t> ~ 1:;; ~ f05 d «( @ @:b "~ «( -"0 ~ , / ,, •....- -'-"'- -- J , J1 ~ '~ :>< • .(; ... • ! IT rJ-Ic' "ib (l) ,," ~ ~I , A Jil "' ~; wi -~~---~~--.." ; ! ".: : \ Site 74 • 0 200" 400' BALCH CREEK!North Scale Recommended Zoning Bureau of Planning • City of Portland WATERSHED PROTECTION PLAN 1:1-6 Balch Creek Watershed Site 74 Area in and near Lower Macleay Park South of the Lawn New Overlay Zones Housing Potential Change ec, en, and ill None Tax Account Base Zone Overlay Zones Comp Plan Housin~ R-59030-0010 FF en and ill OS no chan~e R-59030-0170 FF en and ill OS no change R-59030-0260 FF en and ill OS no change R-59030-0310 FF en and ill OS no change R-59030-0370 FF en and ill OS no change R-91340-3390 FF en and ill OS no change R-91340-3740 FF en and ill OS no change R-94129-0190 FF en and ill OS no change R-94129-0200 FF en and nr OS no change R-94131-0010 FF ec, en and nr OS no change R-94132-0320 FF ec and en FF no change R-94132-0340 FF en and ill OS no change R-94132-0430 FF ec, en, and nr OS no change R-94132-0840 FF ec and en FF no change R-94132-0890 FF ec and en FF no change R-94132-1010 FF ec and en FF no change R-94132-1050 FF ec and en FF no change R-94132-1100 FF ec and en FF no change Page 125 'ern 'OUNDA-1l1 / \ (OS)FF L [ A Y .. " (OS) FF nr en AG FFnrec ~J'l.iT..... ~.::.. 'u' ....... ',.' ._~IJ. FFnr en ", .." ....... .::... -.-::,~" " 'n' "."" MULTNOMAH COiNTY FFnrec :;tl.:'''''' , ~ i I ~ ;' I I r I I I II i Site 75 • 0 200' '00' BALCH,CREEK,North - Scale Recommended Zoning Bureau of Planning' City of Portland WATERSHED PROTECTION PLAN / 2?f Balch Creek Watershed Site 75 Area in and near the Portland Audubon Society's Pittock Sanctuary New Overlay Zones Housing Potential Change ec, en, and nr None Tax Account Base Zone Overlay Zones Comp Plan Housing R-94131-0170 FF ec, en, and nr as no chanj?;e R-94131-0570 FF ec, en, and nr as no chanj?;e R-94131-0690 FF ec and nr FF no change Page 127 ' . ,~ ... ,.~.; .~;. oJ (OS)FFnren .... - .....,.. :: (OS)FF nren \ "----.,.---.,.,......-....-~~==;-~--, ..=....~'.-~.-- ..... 1- J I I J " Site 76 _t 0 200' '00' BALCH CREEKINorth Scale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN Balch Creek Watershed Site 76 Area Between Cornell Road Tunnels, and in and near Upper Mac1eay Park New Overlay Zones Housing Potential Change ec, en, and nr None Tax Account Base Zone Overlay Zones Comp Plan Housing R-45200-4230 FF ec OS no change R-45200-4450 FF ec OS no change R-55150-0010 R7 ec and en R7 no change R-55150-0020 R7 ec and en R7 no change R-55150-0030 R7 ec and en R7 no change R-55150-0050 R7 ec and en R7 no change R-82460-0320 R7 ec and en R7 no change R-94131-0010 FF ec, en, and nr OS no change R-94132-0350 FF ec and nr OS no change R-94132-0360 FF ec and nr OS no change R-94132-0570 FF ec and nr OS no change R-94132-0640 FF ec, en, and nr OS no change R-94132-0910 FF en OS no change R-94132-0930 R7 ec and en R7 no change R-94132-0940 R7 ec and en R7 no change R-94132-0960 R7 ec and en R7 no change R-94132-1030 R7 ec and en R7 no change R-94132-1040 R7 ec and en R7 no change R-94132-1090 R7 ec and en R7 no change R-94132-1260 R7 ec and en R7 no change Page 129 Balch Creek Watershed Site 77 Area West of Cornell Road Tunnels in or near Adams and Upper Macleay Parks New Overlay Zones Housing Potential Change ec, en, and nr None Tax Account Base Zone Overlay Zones Comp Plan Housinj1; R-94131-0010 FF ec, en, and nr as no change R-94131-0140111 FF en and nr FF no change R-94131-0190 FF ec, en, and nr as no change R-94131-0390 FF ec, en, and nr as no change R-94131-0550 FF nr FF no change R-94131-0640 FF ec, en, and nr FF no change R-94131-01401U FF en and nr FF no change R-94131-0660 FF ec and nr as no change 111. R-94131-Q140 and R-94131-Q140 are in common ownership. These lots cannot be used for housing under existing zoning. 112. R-94131-Q140 and R-94131-Q140 are in common ownership. These lots cannot be used for housing under existing zoning. Page 131 "n ... • 'n' ""'" {OS)FFnr (OS) FF .. "" /~ ~ I J I IPAR K 6 ;;:".. Z::::..J .....J ... '.. ' ~ ... A.. FFnr en, ,,> ..~ FF M .. c LEA V men ", ;0;01.- j FFnrec Site 77 10" 0 200' '00' BALCH CREEK,North Scale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN MULTNOMAH CO, NTY tnT IOUNDAIlT (( -.~';.l" FFnr en , i " ------ \\ \.''\:~'-. ' ..~. (OS) FF MAC L E 1-men ", ·"u•./~_ 'J.' •. # J. . - . ! -tl' ....... (~,j.' ....... FFnrec CITY SOUl/DAIlY ::r.= ...... I I I I; \ ~. r CITY ...... R20en f,.' ........ R20ec 'u' ~uA . Site 78 • 0 200' .00' BALCH CREEKjNorth - Scale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN I]Y Balch Creek Watershed Site 78 Area of New Construction near Audubon Caretaker House New Overlay Zones Housing Potential Change ec, en, and nr Loss of Two Tax Account Base Zone Overlay Zones Comp Plan Housing R-94131-0240 FF ec, en, and nr FF -2 R-94131-0620 FF ec, en, and nr FF no change Page 133 ,":t:;: ~ .. I< ;;: j' OP,N[ , •,~j.~.:O';" .:-.:.... -"'--""".~ ... irJ '",."",..: ',,' ~.'. ,....... ; ~ . J • '" "( , V . 6~Jo·l, FFnrec 'J,' ._u.... , ~ 'H' 4.4,J. FFnr en '"•. ,Nt- .::;., .- , , -r..~r OMAH CD JNTY 6 ;-;;~, , ',' ~ 'J' t-!._I L L TOP (ul Site 79 • 0 200' '00' BALCH CREEKINorth Scale Recommended Zoning Bureau of Planning· City of Portland WA1ERSHED PR01ECTION PLAN /3[;, Balch Creek Watershed Site 79 Areas near intersection of Barnes Road and Hilltop Drive New Overlay Zones Housing Potential Change ec and en Loss of Two Tax Account Base Zone Overlay Zones Comp Plan Housing Fl-39000-0010113 FF en and nr FF -2 R-39000-0100114 FF ec, en, and nr FF no change R-94131-0270 FF ec and en FF no change R-94131-0340 FF and RIO ec, en, and nr FF no change Fl-94131-0350 FF ec and en FF no change R-94131-0420 FF ec and en FF no change Fl-94131-0490 FF and RIO ec and nr FF no change R-94131-0630 FF ec and en FF no change Fl-94131-0760 FF ec and en FF no change Fl-94131-0770 RIO ec FF no change Fl-99106-2710 FF ec and en FF no change 113. A portion of this lot has no environmental overlay zones. 114. A portion of this 101 has no environmental overlay zones. Page 135 R20ec 6 .~ '.->,u_ ',,' I",~~, r. MULTNOMAH CO' NTY R20ec 20en cIaT .,... R20en '.'('0"'" Site 80 • • 200 '00' BALCH CREEKINorth Scale Recommended Zoning Bureau ofPlanning • City of Portland WATERSHED PROTECTION PLAN /315 Balch Creek Watershed Site 80 Area in or near the Proposed Pittock Place, Planned Unit Development New Overlay Zones Housing Potential Change ec and en None Tax Account Base Zone Overlay Zones Comp Plan Housin~ R-94131-0250 R20 ec R20 no chan~e R-94131-0280 R20 ec and en R20 no chan.e;e R-94131-0580 R20 ec and en R20 no chan.e;e R-94131-0610 R20 ec R20 no chan.e;e R-94131-0700 R20 ec and en R20 no change R-99106-3070 R20 ec and en R20 no chan.e;e R-99106-3080 R20 ec R20 no chan.e;e Page 137 ',' ....... , I I I I (OS)FFec (QS)FF (OS)FFen MULTNOMAH COUNTY ......._---- '~"""'~:-..-0'1"",:;;r':::r~--'-,_.-' --.--.------;;;nr--- _ .. . Site 81 • 0 200' '00' BALCH CREEKINorth - Scale Recommended Zoning Bureau of Planning' City of Portland WATERSHED PROTECTION PLAN /'1 () Site 81 New Overlay Zones Housing Potential Change Balch Creek Watershed Area in Mount Calvary Cemetery ec and en None Tax Account Base Zone Overlay Zones Comp Plan Housin~ R-94131-0100 FF ec and en as no change R-94131-0110 FF ec and en as no change R-94131-0070 FF ec and en as no change Page 139 .9"" ...., v: -~~------~.'-'I.:J.~.~,.~.~ IJ_0"0 .~ , '. : t ..~~--._- (OS)FFen "" .... --'" ~; .. r MULTN MAHCOUN ',' J<> .I. '. ('.---_._......---~._- FF M " ',,,I i.U ...· J -----~,.. ~" .....~.,- , ,,' .-.. _" .', ....--\ :::-' .~ , : ... ',,' ......... o ~._._,__~_---'. ~:r~~0\ ". '---..---.. . ~\~.-.. -~.,:11'- ..~'J. . ~ '-4. , . ... .... ;~-,-:'f~~"<.~ " \\ _-:..:.....- c.,_ \. '. Site 82 1& 0 .... '00' BALCH CREEKINorth Scale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN {1-/2- Balch Creek Watershed Site 82 Area in or near the Royal Highlands and Barnes Park Subdivisions New Overlay Zones Housing Potential Change ec and en Gain of Thirty-Five Tax Account Base Zone Overlay Zones Comp Plan Housing R-05530-0980 R20 ec R20 no change R-05530-1020 FF none RIO +3 R-05530-1060 FF none RIO +1 R-05530-1090 FF none RIO +7 R-05530-1100 FF none RIO +1 R-05530-1120 FF none RIO +1 R-05530-2070 FF none RIO +2 R-05530-2120 FF ec RIO +8 R-05530-2180 FF ec RIO +2 R-05530-2220 FF ec RIO +1 R-05530-2240 FF ec RIO +1 R-05530-2260 FF ec RIO +2 R-05530-2310 FF ec RIO +1 R-05530-2340 FF ec RIO +1 R-05530-2360 FF ec RIO +1 R-73100-001O R20 ec R20 no change R-73100-0030 R20 ec R20 no change R-73100-0050 R20 ec R20 no change R-73100-0150 R20 ec R20 no change R-73100-0200 R20 ec R20 no change R-73100-0300 R20 ec R20 no change R-73100-0340 R20 ec R20 no change R-73100-0380 R20 ec R20 no change R-73100-0420 R20 ec R20 no change R-73100-0460 R20 ec R20 no change R-73100-0500 R20 ec R20 no change R-73100-0530 R20 ec R20 no change R-73100-0560 R20 ec R20 no change R-73100-0600 R20 ec R20 no change R-73100-0640 R20 ec R20 no change R-73100-0680 R20 ec R20 no change R-73100-0720 R20 ec R20 no change R-73100-0760 R20 ec R20 no change R-73100-0800 R20 ec R20 no change R-73100-0840 R20 ec R20 no change Page 141 Balch Creek Watershed Site 82 (Continued) Tax Account Base Zone Overlay Zones Comp Plan Housin~ R-73100-0880 R20 ec R20 no chan!1:e R-73100-0920 R20 ec R20 no change R-73100-1000 R20 ec and en R20 no chan!1:e R-73100-1040 R20 ec and en R20 no chan!1:e R-73100-1090 R20 ec and en R20 no chan!1:e R-73100-1l301l5 R20 ec and en R20 no chan!1:e R-73100-1l70Ilb R20 ec and en R20 no change R-73100-1210 R20 ec and en R20 no change R-73100-13101ll R20 en R20 -1 R-73100-135011~ R20 en R20 -1 R-73100-1390m R20 en R20 -1 R-73100-1430 R20 ec and en R20 no change R-73100-1470 R20 ec and en R20 no change R-73100-1510 R20 ec and en R20 no change R-73100-1550 R20 ec R20 no change R-73100-1590 R20 ec R20 no change R-73100-1630 R20 ec and en R20 no change R-73100-1670 R20 ec and en R20 no change R-73100-1710 R20 ec and en R20 no change R-96136-1790 FF ec RIO +2 R-96136-1800 FF ec RIO +2 R-96136-1810 FF ec RIO +2 115. R-73100-1130, R-731()(}'1170, R-73100-131O, R-731()(}'1350, and R-731DO-1390 are in common ownership. 116. R-73100-1130, R-731DO-1170, R-73100-1310, R-731DO-1350, and R-73100-1390 are in common ownership. 117. R-73100-1130, R-731DO-1170, R-73100-1310, R-73100-1350, and R-73100-1390 are in common ownership. 118. R-73100-1130, R-731DO-1170, R-73100-1310, R-73100-1350, and R-73100-1390 are in common ownership. 119. R-73100-1130, R-731DO-1170, R-73100-1310, R-73100-1350, and R-731DO-1390 are in common ownership. Page 142 -I ~ .. ft·, ..,. (1'1/' 7. 45 /?c. ~ ... to: FFen c .." •.•• <.J, FFec A : ! ::--. ---~~~----r----- n 'OUHD~RY- ...------ ...I(.... I I I II--"S-- ::.:'"-·=···~·-~--l- ". ~~.. ~~-ii"11\1d I L~ Q .FFen -FFec ''''.\ \, .... J) Site 83 • 0 200' '00' BALCH CREEKINorth Scale Recommended Zoning Bureau of Planning' City of Portland WATERSHED PROTECTION PLAN /16 Balch Creek Watershed Site 83 Area near Intersection of Greenleaf and Cornell Roads New Overlay Zones Housing Potential Change ec and en Loss of Thirty-Two Tax Account Base Zone Overlay Zones Comp Plan Housinl!; UnassiWled A FF ec FF no chanl!;e Unassi!1;ned B FF ec FF no change Unassi!1;lled C FF ec and en FF no chan!1;e Unassil1;ned 0 FF ec and en FF no chan!1;e Unassil1;ned E FF ec and en FF no chan!1;e Unassil1;ned F FF ec FF no change Unassigned G FF ec FF no change R-17870-0250 FF ec RIO +9 R-17870-0290 C4 ec C4 -32uU R-17870-0330 FF ec RIO +1 R-17870-0380 FF ec RIO +6 R-59040-0300 FF ec FF no change R-96125-0130 FF ec and en FF no change R-96125-0140 FF ec FF no change R-96136-0010 FF ec and en FF -16 R-96136-1760 FF ec and en R20 no change R-96136-1770 FF ec FF no change R-96136-1830 FF ec FF no chan!1;e R-96136-1850 FF ec FF no change R-96136-1860 FF ec FF no change 120. The reduction of thirty-two units assumes that a commercial property would develop at Rl density. Page 145 .1.-' ,.' .,' DARY /:~~~/'\ (:32' ~ (~-f ), 7,61. )~ · 7.0 A., · · , \. , FFen MULTN Q FFen ~~~~?~N\Y .,.-. ::----:.,.L,,-----'--;T'-~=----=:::.::- - - ...J.----"''-'-<-.-l-~'-------'--~ -,"~ .. , " 0 >. - ....... '.'.( "6' . L 'i..5 ':; 1. , , • J, .' .~ •. l Site 84 • 0 200' '00' BALCH CREEKiNorth - Seale Recommended Zoning Bureau of Planning· City of Portland WATERSHED PROTECTION PLAN FI8 Site 84 New Overlay Zones Housing Potential Change Balch Creek Watershed Area near Skyline and Thompson Roads ec and en None Tax Account Base Zone Overlay Zones Comp Plan Housing Unassigned H FF ec FF no change Unassigned I FF ec FF no change Unassigned J FF ec FF no change Unassigned K FF ec FF no change Unassigned L FF ec and en FF no change Unassigned M FF ec and en FF no change Unassigned N FF ec and en FF no change Unassigned 0 FF ec and en FF no change Unassigned P FF ec and en FF no change Unassigned Q FF ec and en FF no change R-77380-04I0 RIO ec RIO no change R-96I25-0070 FF ec FF no change R-96I25-0080 FF ec FF no change R-96I25-0670 FF ec FF no change R-96125-0790 FF ec and en FF no change R-96I25-09I0 FF ec FF no change R-96I25-0970 FF ec and en FF no change Page 147 ~@.i. " ,. OS FF u.~:~gt;~: l' ..,..~ . ·' ./-' ~~~~ .-/~:.:- ....... ,.r ~ ~-. .",-, - '<._-,.,,..-~.,,,,.,(... '.' ',,' M!JLTNOMAH COUNTY , L( '~':I(O~!, FFnr en. ,.--;: A DD'TOD.' '0 no [- MOUNTAIN VIE..... , p,a, '"!..:.."I"-S,-,IO",:-;~'...!1.!.6=.!oL~A~"~'D~C~O!..':N~'S~E,,,R~V~A.!TI.!:O~N,"A:~"'.:.·~D.!D~E,-\:.'E~LO~P,:,:'",1E=-VT=.!C~O~~~l.'=ll"SS=IO~,c:N ----... [).( .... rlop P'rot:n1m 10 A"hlnC' Itw Go&l 660-16--010 Based on the determinacion of the economic. ,ocia/. en",ironmentaJ iitnd e:neriY con'l.('Quenen. a jur·-.ji,,:10n must "de"'clop I progrlm 10 achie"'e (he GoaJ". As\Umlni theu: is .dequoile inrOtrn.alion on Inc location. qualllY .•rod qUointilY of lhe ro-ourec sile a5 ..... elt IS on th< n31urc of lhe conO.c1ina u~e .Ind £SEE con~equences. a jurisdlCllOn 1\ e .. peeled to ··re\.Ol",c·· conflicts with "pecd,e sjtcs inan)' of IMc follo .... ina lhrce wap lisled be 10""'. Comp/iolncc With G~l j "hall aha b<: b.J.Hd on the plan'~ o"'erall .Jblily 10 proleel ,lI'"lJ DIVISION 16 REQL'JRE\lE"TS A"D APPLICATION PROCEDL'RES fOR CO,IPLYlI'G WITH STATE" IDE GOAL! tn, rnt0r) Goal 5 RnCMJr"C'n 660- J6-C()() (I) The inventory proccu. for Statewide Planning Goal .s bcKim, ..... ith the collection of available data (rom as many lourccs as possible' incJudins expcrts in the field. local cilizens and landowners. The loc~ ,ovcmmcnt then analyzes and rdines the data and determines whether there is surricient information on the location. qualily and quantity of each resource sile to property complclc the Goal 5 proccs~. This U'lalysis also includu ..... hcthcr I pU'tkul~r natural area tS ··fcologic.allr ~nd ~icnlirically sianificanl", or an open space .rca is "nceded", or a ~cnic .rea is ··ouuu.ndinau_ as oullined in rhe Goal. Based on lhe e .... idence and lcxa.l IOvell')o ment·s analysis of those diU, the local lo",cmment t.hCn determines ...... hich resource siteli an: of s.ilTlificance and lncludn Iho50e siles on the final plUi inventory. (2) A "valid'" in ...entory of·~ Go.J , res-ourcc under lubsection (S)(e) of Ihis rule must include a determination oC lhe: location. quality. and quantilY of each of the resource s.itcl. Some Goal 5 rcsoureu (e .1., nalural areas. hisloric ,iles., mincral and awC'g,alc siles. scenic ......aterways) arc morc sllc.specific Ihan olhcn. (c.& .• poundwatcr. eneray s.ourccs). For sile·spc'cific resources. delerminarion of locolion must include a description or map of the boundaries of the resource sile and of th,-impa~arC2 10 be .a((~cted. it ditfcrcnt. ~'?f non.site·specific ruourccr.-determlnatlon mUst be as specifIC as possible. () The dC'tenninalion of qua/it)· requires some considerli· tion of the reSOtJ(l;e site's relative value, as compared to other u.;unplcs of the s.ame resource in aileasl the juri\diclion itself. A delerminalion or quontit)' requires consideracion of the rel"tive abundance or the 'tsource (or an)' ~~cn quality). The l('",cl of delail thac is pro¥ided wilJ depend on how much information is a ...·ailable or "oblainable". (4) The inventory completed al the IOCill k~I, incJudina op'ion, C~)(.), (b), and Ce) of ,hi. rulc. will be .dC'lUllC (or Goal compliAnce unless it can be Iho""" to be based on anaccunte dala. or docs "at adequalcly address locAlion. quality or quantity. The issue 01 lidequacy may be raised by the Depan- menl or objecrors. but finaJ detcmUnation is nadc by the Commission. (S) Based on dala collceled. an..IYled and rdined by the locaJ governmenl. IS outlined above, a j"lfi~iction fu..s three hasie oplions: . (a) Do Noc Include on (n .... entor)': Based on informarion that is a ... a.ilable on location. qu.lily and quantity. lhe loc.a.J aOl.crnmenl mial'll delermine lhal a paniculas rr,ource sile it. nOI important enough 10 ....'arTanl inclusion on Ihe plan invento- ry. or is nor requircd to be 'neludcd in the invenlory based on lhe spe-cific Goal slanduds. No funher aClion need be lAkcn ....·ith rcg..ud 10 these sites. The local ,overnmcnl is nol required to ju'wfy in ics comprehensi\le plan a dcci~ion not to include a ,- panil:ular ~;Ie in the plan in...-cnlory unleu ch.. llcnlcd by the ) DcpV'1menl. objectors or the Commission b""scd upon 'I conlndiclory jnfof~ljon. (b) Dcl.y GoaJ , Process' ""'hen lOme information is .... ~d.Jt'lk. indicaling Ihc poHibk c1i\tencc of •.res.our~C' S;l~. bUI IhOlI inform.lion is nol adequate to idcnl.ty With p.nlcul.a.n· ly Ihe Ieelic)' 10 addrcS) It''l3.1 rnource ,tlc oind proceed '"throuih th~ Go.al , proccu. in ~ furure. !he. pl.lon UlOl.lkj t~ include a tlme-fraJrle for Ihl' rcvle ....... Specl.1 Implcrn(n!l~ t tnea.surcS arc not appropriale Of required for GOoIoI j CO~IC .nee purpos.es unlil adcquale information i, IVlil.iible 10 enl!::/ lunhcr review and adoption of such mC.l1uru. The stllCI'Tlo(~ in the pla.n commiu the loe.1 JOvcmmenl 1.0 addreh!.h( t nsource sile lhrouih the Goa.! 5 process in the Po\r. ft Icknowlede.menl period. Such ruture lei ions could require, ~. p"an arncndmcnl. J.. (c) Include on Plan In ...enlory: \1t'hen information i, .(l liya,jlable on lacacion. quality and qu;antily. and Ihe: k>::....l • ao...emmcnl hu determined a site (0 be iliiTlificant or imporu.nt 'f as a re,uh of Ihe d31a collection and anal)'sis process. thc 1 Ill. 197 Hlot: LCD )'11lS1(T."",l.I,. c/. ).s-&I, LCD '-IllS I. I. .l rl 6-~1 (ED. NOTE: 1l'IoC' telt o( Temporvy Rules i~ noi printed in l1'w OrC"lon Adm;ni~(nlj ...c Rule~ Compil.Jtion. CopiC'~ rna)' be obl.l,~ from the atJoplina &.i'C'l"ICy cw ll'\.c Sc-crct&ry of SlAtc.) IdC'nllty Conniclln.c Uw:s 660-)(",005 It is the reioponsibility of local lo",cmmenl 10 identify conOicu with in ... enlorie:d Goal S r~svurce: siles. Thi1 i, done pnnurily by examining the uses allo......ed in broad lonl"" dislricts established by the jurisdiclion (e.c.• fOfe1f and lipicuhural zone,). A confliclina use is one INhich. if allOwed. could neptivcly impact a Goal 5 rcsource sile. \Vhere COnnK!· inc UKS have been identified. GoaI.5 rewurce s.ites may imp.ac\ thon uses. These imp.lCLS must be eonsidered in an.afytina the economic. 1oCCiai. en ...ironmcnlAl and eMtJy (ESEE) conse· quences: (I) Preierve the Resource Site: If thert arc no conniclinl us.c, for an identified resource iile, Ihe jurisdiction must adopt policics and ordin.ance pro...isions • .as appropriate. which iMurc preservation of Lhe resource site. (2) Determine the Economic. Social, En",jronmentaJ. anc Enern Consequences: rr connictinl us~s arc idcntiried. lhe economic. social. environmental and eneflY c.ons.cquences of the conniclina uses mulot be determined. Both Ihe impacu on the rcsource sitC' and on the connielinr Uioe mu1t be con1idered in anal)'linl the ESEE con,cquenccs. lnc Ipplicabiliry a.nJ requirements of other SI.arewidc P1annine Goals must &Iso be" considered ......herc appropriale. at this. Slaic of Ihe procCl~ A determinalion of Ihe ESEE COn5oC'quences of identlflcd conOiclina U5oC'1 is adequate il it enables I juri~'clion. 10 provide reasons 10 e.J.pl.atn why decisions Ale made ro, .pccdlC liles. SUoI. AloIth.: DRS Or. IS) A 191 .. H": LCD }-198I(Temp). f. a. ct. .5-1-11; LCD 7-1~1. (. a. ef (>.~l . I lED. ~OTE: T'h< 1('1,1 or Temporary Rules i, not pnnl~ in ~ 'I Oreaon Admlni~lnll.. e RylC'1 Comp,l.Jllon. Cop'u m.ay be: ot'ol~r>C- from the adopt in, &jcncy or \.he S CO:O;SERVAnON AJ..1fHXX)(5)(a). 660-16-00$(1). and 66f). l6-01O. Any c~angn. additions. or Ocletions .....ould be made AS • plan amendment ••~;n (cllo";"1 aJl Goal' ltC'pS. H the local aO\lernment has included in in plan ;Iems under OAR 66(l.. J6-000<:,SXb), tl',e focal ,o\,c:mmenl ha.s e:ommiClc:d irself fa Lalte ccruin aclions wilhin I cenain time frame in the post·ak.nowfc:dg,ment period. ,"'ifnin (hose UJIC'd tim~ fn..mes. the loc'l.l lovemment must .ddrc\, the issue u H.31t:d in ils ptan. and Irc:allhc ~Clion as • plan am~ndmenL SUI. "~'h.. ORSCh 18) III 197 Hb:t LCD.5-)98J(TempJ. f.... d. ~~(; LCD 7.1981, r.... d. 6-19->, lED. N()1"£: Tbc: t n r 01 Tr trIpc jurisdictions ....·hich: (A) Are under conl;nuance orders adopted pursuant to OAR 6ro-OJ-CI4O: (B) Are scheduled for review at tl\c April lOIMay I. May 29 or JunC' 1981 Commission mC'etin.rs. (b) For these- jurisdictions a nOlice will be J,i ....en 10 aJl p:tn;('J, on lhe- original nOlice li~t pro\tiding • "Soda)' period to object 10 the plan b.as.ed on OAR 660-16-000 throuih 660-16- av. (e) OAR 66O-J&--O:X) ",,·ill be applied bas.ed on objectiOt'is allegin.a vioratiom of specific plo",i~ion1 of Ihe rule on specific re-source sileL ObjeclioM must be filed (ollowing re-quircmenlS oUllined in OAR 6(,o...Q).{X'() tl'\rouJ,h 66O-O)..Q40 (Ackno ....-"c:dvnen1 of Compliance Rule-). "'here no objeo(aion~ lUe filed Of objection!. ue nOf "p<'ci(ic H ro whid'l elemenu of OAR U:J'J-16-CXXJ Ihroug)'l~ Ib--02S ha ... t: been "'ioraled, ..nd on what r~~OUtce lires. (he plan will be rc: ..·;ew.ed 8.ialn\1 Goal 5 OREGON AOMIN1STJtATIVE RULES CH 'I"TER 660, DI\'ISIOS If U"'"I) CONS£R\'ATION A.~OO£VELOPMDo.. COMMISSlON ,,"ndud< .. they exisled prior to adoption of OAR 660-16-000 llvoulh 66O-1~2.1. ()j Jurisdictions .....ich receive aclr.nowlcdpncnt of compli.nce (as oullined In ORS 197.2~lla' the April »'May I. 1981 Commiuk»n mcclina "'ill ItOt be &UbjcC1 (0 review ptoc.dures oullincd above, but will be trUIe.0 : OilS A.. 11).a lr7 "Ill' LCJ) S-19IICT• ...,).1. FIELD AI Bums and LOCATION Macleay Trail DATES 04128/90 OBSERVERS Duncan Brown GEl\'ERAL This site is the potion of the Balch Creek Basin from the steel BIB-beam log barrier aouth to the COMMENTS fence at the Portland Audubon Society's Pittock Bird Sanctuary and west to N,W 53rd Avenue. It includes the Lower Macleay Trail and some of the Wildwood Trail. HABITAT DEGREE COMPONENT PRESENT SCORE SCORE EXISTING ENHANCED SPECIFIC COMMENTS Plant more shrubs SEASONAL SELDOM HALF YEAR FULL YEAR 8 8 W I--::PR=E~SE;::,No:C=E:::-_+=4~----;:",6::-:::-------,==8::+_--=-_+---::--___jI_--------_4 A DIVERSITY ONE TWO THREE 3 3 T I--=O:::F:".TYP=:.:E::S:::':-_+.".,..2"....---:-:::-4-=----:""""""""'=8::+_--=-_+---::--___jI_--------_4 E PROXIMITY FAR NEAR ADJACENT 8 8 R I--:T"'O~C"'O"'VE=R::___+=O;_::_:::':":""""7:'':'':'':,..4==--:::=:-:::::-:-:8::+_-_=-_+--_=_-___jI_--------_4 FLUSHED SELDOM HALF YEAR FULL YEAR 6 6 HOW OFTEN 0 3 6 SEASONAL SELDOM HALF YEAR FULL YEAR 5 7 Plant shrubs with winter F PRESENCE 0 4 8 berries o I-...:D:::IVE==::R=::S:;,IC::TY==--'"'L'"'O"'W=-----=-ME=D"'rm=j=----""'H=IG::':H::+---4-:--+--6-=--+;P~la:.:n.:t;:;s::.e-e-:d-an-d:-b'"'e-r-ry----1 o OF KINDS 0 4 8 producing shrubs D I--=P-=R~O-=X:-:I:-M:-:I=TY::---+F=-A:-R=----:-:N=E..,.A=-R--..,.A=D":"JA:-C:::-:E::':N=T:+---8-=---+--8-=---i======;;';;"'---~ TO COVER 0 4 8 SEASONAL SELDOM HALF YEAR FULL YEAR 3 3 PRESENCE 0 2 4 C DIVERSITY OF LOW MEDIUM HIGH 7 8 o r;-;ST7R~U;;:C;;;T;;-;U;-;R::;E:;--_t.r;0_;;;_---=;;;4=;-;-----;;y;8m1----;__-+--:::;---_tT;;---:-__-;-__;:__-;--;-......rl V VARIETY OF LOW MEDIUM HIGH 7 8 Plant western hemlock and E t-""7.S;;:P;;;E:;;:C:;;IE:-;-S::;--t;-;::-O;;;---~;:;4==--.....,=8;;;-i1_-=--+--=--l-'gr=a:;;n.::d...;fi:.:.Jr'-------___1 R NESTING LOW MEDIUM HIGH 3 3 PLACES 0 2 4 ESCAPE LOW MEDIUM HIGH 3 4 PLACES 0 2 4 Plant native shrubs Trails allow easy access to creek which causes erosion Parks, sanctuaries, unincorporated lands Full-year stream, downed logs, and snags Some large trees A PHYSICAL HIGH MEDIUM LOW 2 3 D DISTURBANCE 0 2 4 D HUMAN HIGH MEDIUM LOW 3 3 I DISTURBANCE 0 2 4 T INTERSPERSION LOW MEDIUM HIGH 6 6 I WITH HABITATS 0 3 6 o RARE LOW MEDIUM HIGH 4 4 N HABITAT 0 2 4 A SIGNIFICANT LOW MEDIUM HIGH 3 4 L FLORA 0 2 4 V SIGNIFICANT LOW MEDIUM HIGH 4 4 Protected population of A I-;=F-=A;:;-U:-;N""A==-+=O;;;-__~=2=_;_--~=4;t---:;--+_--:;---+cu=tth=ro.;;;a:;;t...;t.;;;ro...;u:;;t iL EDUCATIONAL LOW MEDIUM HIGH 4 4 u I--",V':::AL=UE"".._--1..,.."O.",..__..,.,,=2=,..-__=""'4-:+-_---:,.....___j~---:---I_--------___1 E SCENIC LOW MEDIUM HIGH 4 4 S VALUE 0 2 4 Page One ofFour ~ City ofPortIand, Oregon .,Bureau of Planning DEVELOPED BY; Mike Houck· Portland Audubon Society E~ther Lev - Portland Bureau ofPl.nnin, Michael Jenninp • Portland BurEaU or Planning COMPUTER AUTOMATION BY: Al Burna· Portland Bureau orPlllnning DEV..;LOPMENT ASSISTED BY: Dennil Patel'll - U.S. Piah and Wildlife Serviu Ralph !lopA - U.S. Environmental Protection Agency Gene Hub - Ortlgon Department. oCFiah and Wildlife Jack. Br