Broad overall initial assessment, pre- and post-construction Determine relevant factors, costs, and damages Identify all potential positive or negative impacts on value Comprehensive analysis
Site environmental evaluation Hidden value, such as feasible mitigation sites or conservation tax credit potential Wetland as privacy buffer Damages, such as pollution, erosion, loss of mitigation areas, buffer area impacts Report with methods, findings, conclusions, and recommendations, data forms, lab certificates, chain of custody, drawings, photographs, etc.
Verifiable expert Industry standard methods Approval by an objective third party or environmental agency Environmental documents ◦ Wetland delineation reports, Phase I/II Environmental Site Assessment, on-site soil evaluations, odor surveys, noise measurements, visual impact assessments, groundwater analysis, soil vapor surveys, slope and topography analysis, ecoasset valuation.
State certifications or licenses for some subdisciplines ◦ Certified Professional Wetland Delineator, Professional Geologist, or On-Site Soil Evaluator Self-regulating industry association credentialing programs ◦ Professional Wetland Scientist, Registered Environmental Manager, and Certified Environmental Professional Regulatory definition: Environmental Professional ◦ based on education and years of experience 40 CFR 312.10 Many well-qualified environmental experts have no available certification programs.
Major factor affecting land value Once thought of as worthless unusable bayous, bogs, fens, marshes, poquosins, potholes, quagmires, sloughs, swamps, wet meadows winter wet woods, soft ground where your feet got wet Management method: drain it, so it could be used productively
Scientists showed wetlands have ecological value Some wetlands did not look wet, similar to dry land Net primary productivity of wetlands among the highest of all ecosystems on earth Filter and store storm water Recharge groundwater aquifers Protect water supplies Rich species diversity, contain the majority of rare, threatened or endangered plants and animals on earth
Regulators developed a system of permits for disturbing wetlands. Regulations may reduce economic value of wetlands, because not all land uses in wetlands can be approved. Permit system created economic value in wetlands which could be used for mitigation purposes, such as preservation, rehabilitation, or restoration. Wetlands are abundant and ubiquitous, and may have a significant impact on property value, negative or positive.
Wetland Definition: “Those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions.” Soils remain saturated long enough to create anoxic conditions High water table within 12 inches of the ground surface for 5% to 12.5% of the growing season ◦ 3 or 4 weeks (in Virginia) Soil may be very dry for the rest of the growing season
Anoxic conditions cause gray, mottled hydric soils. Plant community that is adapted to survive the anoxic soil conditions. Hydrophytes: obvious wetland plants e.g. cattails. Common plants, e.g. loblolly pine trees, red maples, and oaks. Flat poorly drained areas, often with clay soils, could be used for development sites, except for the presence of jurisdictional wetlands.
Wetlands may look wet. Wetlands may look dry nearly all year.
Permits: U.S. Army Corps of Engineers regulations at 33 CFR 320-332 Clean Water Act permit to place fill material in a wetland Definition of fill material: nearly any surface modification of wetlands Includes mechanized land clearing, excavation - “incidental fall- back” Individual permits for major impacts ◦ >0.5 acres of wetlands or >300 linear feet of streams ◦ analysis of alternatives ◦ rebuttal of the presumption that an upland area exists which does not require wetland impacts ◦ avoid and minimize impacts ◦ mitigation for unavoidable impacts
Simplified permits, Nationwide permits and General permits Facilitate approval of projects with minor wetland impacts ◦ Outfalls (NWP7) ◦ Utility lines (NWP12) ◦ Linear transportation projects (NWP14) ◦ Minor fills (NWP18) ◦ Residential construction (NWP29) ◦ Commercial and institutional development (NWP 39) ◦ Agricultural activities (NWP 40) ◦ Reshaping existing drainage ditches (NWP 41) ◦ Storm water management facilities (NWP 43)
State wetland permit system City/County wetland permit systems Agency Reviews: ◦ SHPO mandatory, Section 106 of the National Historic Preservation Act ◦ U.S. Environmental Protection Agency ◦ U.S. Fish and Wildlife Service ◦ Applicable state and local agencies.
Mitigation: Restored or rehabilitated wetlands, created wetlands, or preserved wetlands Pre-constructed wetland banks In-lieu fee programs (generally post- constructed mitigation) Site-specific mitigation
Mitigation Ratios: Typically two acres of restored or created wetlands for each acre of impacts, or 5 to 20 acres of preserved wetlands for each acre of impacts Wetland mitigation bank credits, $10,000 to $540,000 per acre (or per mitigation credit)
Mitigation price based on: ◦ Habitat type (tidal vs. nontidal) and rarity ◦ Plant or animal species of concern, special habitats Mitigation areas separated by drainage basin and tidal vs. nontidal condition Cost of mitigation (value of mitigation sites) depends on supply and demand Wetland habitats can have extraordinary value
Protected, unbuildable buffer areas around sensitive environmental features. Many types of buffers. Chesapeake Bay Preservation Act,100-foot Resource Protection Area (RPA) buffer landward of wetlands, perennial streams, and other environmentally sensitive areas. Reservoirs are often protected by a 100-foot or larger buffer zone. 50-foot buffer is required around sensitive soil types “Southern Watershed” of Virginia Beach, Virginia Bald eagle nest buffer: 750 feet unbuildable radius Buffer zones can have devastating impacts on property valuation.
Construction project may create or alter buffer zones by: ◦ Creating or moving a perennial (always flowing) stream Need to review land development design constraints before vs. after changing stream/buffer.
Intermittent stream may become perennial, creating a buffer requirement: 100-foot buffer on each side of the newly perennial stream, creating a 200-foot wide swath of unusable land centered along the stream. Construction of storm water best management practices (BMP wet pond, for example) Intermittently-flowing stream is deepened for drainage purposes ◦ Bottom of the stream intercepts the water table
A new ditch routes water from drainage sub-basin “A” into sub-basin “B.” Streams and wetlands in sub-basin “A” become dry ◦ Land owner is freed from wetlands and stream buffers ◦ May lose actual or potential wetland mitigation areas Streams in sub-basin “B” become wetter and perennial ◦ Creates 200-foot wide protected buffer centered along the stream. ◦ Wetland areas in “B” expand, reducing developable land Also reduces wetland restoration options Causes significant impacts on property value.
Contamination usually reduces valuation, but not always May delay or negatively impact decisions by lenders, tenants, and future buyers All buyers of property should perform due diligence Phase I Environmental Site Assessment (per ASTM Method E-1527-00) Discover contamination before purchase Provide innocent landowner protections Adjust land valuations
If contaminated, prospective purchaser may proceed without becoming responsible for cleanup. Must comply with limited “continuing obligations.” ◦ Did not cause the contamination, is an arms-length third party in the purchase. ◦ Must allow others to cleanup the site if necessary. ◦ Must perform risk assessment (Phase II Assessment) to reasonably inform users or occupants about the nature and extent of environmental conditions at the site.
Liabilities after EA1: EA1 protects against government mandated cleanups, but not: ◦ liabilities with respect to suits from neighboring properties, tenants or occupants ◦ compliance with continuing obligations ◦ future construction ◦ groundwater usage
Acquirer needs to determine costs related to: Disposal and handling procedures for: ◦ contaminated building materials, ◦ excavated soils, ◦ dewatering effluent, ◦ preventing contamination from spreading off-site during construction. Migration of pollutants from contaminated areas to neighboring properties. Underground utility lines with bedding gravel, conduit for flow. Can be major budgetary impact. Assess during the planning and appraisal stage of the acquisition.
Environmental damage caused by condemnor’s construction: spreading of contamination from off-site sources mobilized by the construction, erosion by altered stormwater flows, sedimentation from disturbed soils, contamination of wells caused by rerouting of stormwater, and numerous other possible impacts.
Appraisal needs to consider reimbursement for cleanup costs: Third party obligations and government programs State reimbursement for leaking underground petroleum storage tanks, testing and cleanup Fund for remediating contamination at dry cleaner sites Federal and state programs for cleaning up brownfields sites, including grants, loans, tax incentives, partnering options, and reimbursements Responsible party may have reimbursement obligations
Eligibility for reimbursement? Original owner vs. condemnor Individuals vs. small businesses vs. large businesses vs. government agencies. Non-reimbursable costs ◦ soil compaction and testing ◦ non-mandatory cleanup -- minor contamination, aesthetic purposes
Estimating the extent of contamination and valuation impact Can be subjective process with far reaching effects. High levels of contamination and high cost estimates can: ◦ delay or prevent property closing, ◦ create more legal costs, and ◦ cause large escrow requirements.
Underestimates of contaminant levels can: ◦ create liabilities for improper reporting ◦ cause accidental spreading of contaminants ◦ increase disposal volumes (this can be an extreme liability for listed wastes) ◦ cause unanticipated renovation or demolition expenses (e.g., unidentified asbestos) ◦ cause loss of collateral value, and ◦ cause an underestimate of ongoing cleanup/management costs.
Valuation of contaminated site for private, voluntary transactions Willing buyer and willing seller Estimate value of the property as clean ◦ deduct testing and cleanup costs ◦ deduct intangible costs (difficulty of finding tenants, lenders, etc.). Prudent buyer to determine all costs, and negotiate mutually acceptable purchase price.
Deducting cleanup cost from value may not be valid in eminent domain. land not causing hazard seller not required to cleanup difficult to estimate cleanup costs, subsurface factors not known with certainty government risk assessors opinions can vary
If owner undertakes cleanup, he may eligible for reimbursement. would lose right to reimbursement without performing the cleanup. would bear the entire cost himself if appraisal deducted cleanup cost.
Some state courts have formally recognized this problem. Illinois, Iowa and Michigan do not allow deduction of remediation costs from the property value in eminent domain takings. California, Colorado, Florida, Georgia, Kansas, and Tennessee do allow it.
Illinois Eminent Domain Act Does not allow eminent domain takings to make adjustments for contamination or estimated remediation expenses, unless there is a violation of a specific environmental law or regulation. Protects the land owner from unfairly losing his property value (cleanup costs may approach property value). Makes landowners financially responsible for violations on their property.
On-Site Wastewater Treatment Soil characteristics for wastewater treatment – necessary for development. On-site soil absorption systems, or “septic systems.” Requires appropriate soil types. Good soils may be hard to find or limited on small area of site. Soil structure can be destroyed quickly by excavation, grading, or compaction. ◦ temporary construction easements Partial taking may render the entire property undevelopable.
Alternative on-site soil systems. Wastewater treatment “package plants.” Proof of feasibility of such plants includes cost estimate, property line setback feasibility, outfall feasibility, and local and state regulatory feasibility.
Water supply well locations. Constrained by required setback distances, typically 50 to 100 feet from: ◦ property lines, ◦ septic systems, ◦ storm water conveyances, ◦ other pollutant sources. Feasible location of wells and septic systems may be limited to small area. Condemnation may cause setbacks to cover entire site. Risk of contamination to wells or damage to septic systems.
Value of ecoassets or cost of environmental liabilities. Highest and best use as a commercial environmental mitigation site? Inventory of significant environmental features on the property. ◦ Tidal and nontidal wetland delineations, habitat characterizations, protected buffer delineation, endangered species assessment, historic resources evaluation, and special environmental features evaluation, contamination issues, etc.
Determine the location and quantity of feasible: wetland or habitat restoration areas, approvable preservation areas, and buffers. Compute mitigation types and yield on the property.
Inventory and delineations: used by appraiser and land planner assess developability show type and number of wetland/environmental mitigation credits show service area within which ecoassets may be sold
Ecoasset valuation estimates supply and demand within the service area, provides comparable sales and pricing, absorption rates, cost to implement a mitigation bank ◦ (planning, design, permitting, bank approval, grading, hydrology controls, planting, monitoring and reporting, contingency for corrective action invasive species control, restoration of plantings in the event of drought, financial assurance/bonding, credit sales and bank operation, and long-term maintenance).
Bottom line: Net present value of the prospective mitigation areas Define developable areas Other valuation adjustments
1. Case: Swamp or Not Swamp 36 acre piece of rural land in southeastern Virginia. Neighboring hospital needed the property for expansion. Hospital claimed the entire property was wetlands. Offered to pay $3,000/acre for “all wetlands.”
1. Case: Swamp or Not Swamp continued Owner’s consultant found only 0.1 acre wetlands. United States Army Corps of Engineers approved 0.1 acre wetland. Appraised value $72,000/acre or 24 times the original offer price.
2. Case: Borrow Pit Mitigation Bank Site Borrow pit was condemned as wetland mitigation site. Compensation offered was approximately $20,000/acre. Pricing was based on agency’s ecoasset valuation. Commercial mitigation banker and team employed. Team found more economical method to build mitigation. Low-cost grading and planting plan, saved $33,000/acre. This raised the net value to $53,000/acre, more than 150% above original offer. Earthmoving highest mitigation cost item. Excessive earthmoving is not practical. Mitigation valuation must use private-sector real-world cost and income figures, based on detailed site-specific analysis.
3. Case: Conventional Valuation vs. Ecoasset Valuation Conventional valuation on 90 acre parcel of vacant land. wetland forest with no timber value no public water or sewer minimal road frontage with some areas totally landlocked, 15 acres of wet ditched cropland soils not suitable for septic drainfields property was undevelopable Conventional value was $1000/acre, $90,000 total.
3. Case: Conventional Valuation vs. Ecoasset Valuation continued Ecoasset valuation with highest and best use as wetland mitigation bank. 15 acres of cropland restored as wetlands yielding 15 mitigation credits 75 acres of wetland forest preserved yielding 15 mitigation credits total of 30 mitigation credits at $10,000 net per credit Ecoasset value was $3,333 per acre, $300,000 total. Ecoasset value was 3.3 times the conventional value.
3. Case: Conventional Valuation vs. Ecoasset Valuation continued Similar property in the neighboring watershed. Wetland mitigation areas higher demand and lower supply. Mitigation pricing in this watershed is $40,000 net per credit. More than 6 times higher than the conventional valuation.
3. Case: Conventional Valuation vs. Ecoasset Valuation continued Additional ecoassets endangered species habitat at $10,000 to $85,000 per acre, organic soil mitigation $30,000 per acre, tidal wetland mitigation at up to $540,000 per acre, tradable development rights, carbon sequestration value at $100 to $500 per acre (?) other marketable ecoassets with ascertainable comparable sales information
4. Cases: Re-Routed Stream Floods Neighbor, Erosion Cases, and More Erosion Cases Case 4.1. High density residential development built on 50-acre prior woods and fields. Area drained by two small streams. Increased impervious area increased in storm water runoff All flow routed into one stream. Exceeded the stream capacity, did not comply with storm water regulations.
Case 4.1. Continued Damage: erosion of scenic pond, flooding, undercutting trees and ornamental plants, loss of mature shade trees, structural damage to a footbridge, and deep deposits of eroded yellow sand on and above the stream banks. Proof: ◦ absence of topsoil ◦ absence of vegetation in the sand ◦ exposed fine roots on tree roots recent erosion The court agreed that the change in drainage patterns had caused the damage and ruled in favor of the property owner.
No Land Clearing 2005 Land Cleared 2006 Case 4.2. Upstream development caused massive discharges of sediment into neighboring pond. Attractive natural amenity changed to offensive murky storm water pond.
Case 4.2. Continued Analysis included: ◦ depth measurements in the pond, ◦ identification of the thickness and volume of new sediment, ◦ measurements of turbidity ◦ comparison with nearby unimpacted pond, ◦ measurement of suspended solids mass in the pond before and after storms ◦ analysis of macrobenthic invertebrate populations ◦ stream impacts in the forested areas Cost estimate was prepared to restore the pond. Court awarded the pond owner $1,500,000.
Case 4.3. Condemnor deforested and denuded a hillside for utility installation. Hillside eroded and flowed into pond. Improper sedimentation controls. The cost to cure the hillside damage and other damage was computed along with impact on value of the property. Case settled favorable to owner (all damages and fees paid).
Case 4.4. Large stockpile of soil from grading project. Damage: ◦ blockage of access during rain events, ◦ major siltation of a pond, ◦ flooding/contamination of a water supply well ◦ increased moisture in the basement, mold, rot, odors, and damage. Required new well and installation of additional storm water treatment and conveyance systems on the downstream property in order to correct the damage.
Comment: Damages could have been avoided by compliance with storm water regulations. Flows could have been designed to eliminate off-site impacts. Prompt stabilization of cleared areas by proper revegetation reduce sediment impact.
Case 4.5. Roadway was built as a high culverted causeway embankment across a deep ravine near low income neighborhood. Causeway formed a dam as sedimentation narrowed culverts, caused flood which destroyed several homes. Could have avoided flood by using larger culverts. Need to anticipate sediment discharges in drainage basin, which ultimately blocked the small culverts.
Case 4.6. “Water boundary” is a property line based on the shoreline. The property boundary changes as shoreline moves by natural accretion or erosion. Gradual imperceptible changes. Boundary does not change with sudden movement of shoreline (Avulsion). Historic water boundaries estimated from: ◦ shorelines visible on aerial photographs, historic surveys, and other data.
Case 4.6. Examples of takings along shoreline: Conversion of waterfront property to inland property (1) permanent avulsion separates property boundary from the shoreline (e.g., bridge embankments on shoreline) (2) condemnation of beach for recreational purposes; property boundary no longer benefits from shoreline accretion Case Summary
Case 5. The Wastewater Pump Station New wastewater pump station adjacent to several houses. Impacts to the homes ◦ Noise pollution from the pumps ◦ traffic from workers ◦ odors, corrosive gas exposures oxidized exposed copper ◦ light pollution ◦ Negative perception related to proximity of the pump station Long sewer line where odors tended to accumulate in the long transit. Measurements of hydrogen sulfide, carbonyl disulfide and carbonyl sulfide and atmospheric corrosivity. Result: relocation of residents to homes in a new area away from the pump station.
Property value impacts are also related to other odor producing sites: ◦ Animal feed lots ◦ Wastewater plants ◦ Biofuel and energy production ◦ Composting ◦ landfills Can affect multiple properties or multiple neighborhoods May impact real estate tax revenues
Case 6. Powerline Easement Utility company condemned hundreds of acres of waterfront forest for wetland mitigation, and took a utility corridor diagonally across the property. Impacts: eliminated waterfront access, reduced options for roads, added a large visual impact to the landscape, precluded wetland mitigation options Professionals studied broad spectrum of development alternatives, including gated community, boardwalks, marina, equestrian uses, active lifestyle. Feasibility of design demonstrated per existing approved wetland permits and similar projects. Value created by finding improved development concepts.
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