Endangered and Threatened Species; Designation of Critical Habitat for Yelloweye Rockfish, Canary Rockfish and Bocaccio of the Puget Sound/Georgia Basin

Federal Register, Volume 78 Issue 151 (Tuesday, August 6, 2013)

Federal Register Volume 78, Number 151 (Tuesday, August 6, 2013)

Proposed Rules

Pages 47635-47669

From the Federal Register Online via the Government Printing Office www.gpo.gov

FR Doc No: 2013-18832

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DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration

50 CFR Part 226

Docket No. 130404330-3330-01

RIN 0648-BC76

Endangered and Threatened Species; Designation of Critical Habitat for Yelloweye Rockfish, Canary Rockfish and Bocaccio of the Puget Sound/Georgia Basin

AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce.

ACTION: Proposed rule; request for comments.

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SUMMARY: We, the National Marine Fisheries Service (NMFS), propose to designate critical habitat for three species of rockfish listed under the Endangered Species Act (ESA), including the threatened Distinct Population Segment (DPS) of yelloweye rockfish (Sebastes ruberrimus), the threatened DPS of canary rockfish (S. pinniger), and the endangered DPS of bocaccio (S. paucispinus) (listed rockfish). The specific areas proposed for designation for canary rockfish and bocaccio include approximately 1,184.75 sq mi (3,068.5 sq km) of marine habitat in Puget Sound, Washington. The specific areas proposed for designation for yelloweye rockfish include approximately 574.75 sq mi (1,488.6 sq km) of marine habitat in Puget Sound, Washington. We propose to exclude some particular areas from designation because the benefits of exclusion outweigh the benefits of inclusion and exclusion of those areas will not result in the extinction of the species.

We are soliciting comments from the public on all aspects of the proposal, including information on the economic, national security, and other relevant impacts of the proposed designations, as well as the benefits to the species from designations. We will consider additional information received prior to making final designations.

DATES: Comments on this proposed rule must be received by 5 p.m. P.S.T. on

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November 4, 2013. Requests for public hearings must be made in writing by September 20, 2013.

ADDRESSES: You may submit comments on the proposed rule, identified by FDMS docket number NOAA-NMFS-2013-0105, by any one of the following methods:

Electronic Submissions: Submit all electronic public comments via the Federal eRulemaking Portal Go to www.regulations.gov/#!docketDetail;D=NOAA-NMFS-2013-0105. click the ``Comment Now'' icon, complete the required fields, and enter or attach your comments.

Fax: 206-526-6426, Attn: Dan Tonnes.

Mail: Chief, Protected Resources Division, Northwest Region, National Marine Fisheries Service, 7600 Sand Point Way NE., Seattle, WA, 98115.

Instructions: You must submit comments by one of the above methods to ensure that we receive, document, and consider them. Comments sent by any other method, to any other address or individual, or received after the end of the comment period may not be considered. All comments received are a part of the public record and will generally be posted for public viewing on http://www.regulations.gov without change. All personal identifying information (e.g., name, address, etc.) confidential business information, or otherwise sensitive information submitted voluntarily by the sender will be publicly accessible. We will accept anonymous comments (enter ``N/A'' in the required fields if you wish to remain anonymous). Attachments to electronic comments will be accepted in Microsoft Word, Excel, or Adobe PDF file formats only.

The proposed rule, list of references and supporting documents (including the Draft Biological Report (NMFS, 2013a), the Draft Economic Analysis (NMFS, 2013b), and the Draft Section 4(b)(2) Report (NMFS, 2013c)) are also available electronically at http://www.nwr.noaa.gov.

FOR FURTHER INFORMATION CONTACT: Dan Tonnes, NMFS, Northwest Region, Protected Resources Division, at the address above or at 206-526-4643; or Dwayne Meadows, NMFS, Office of Protected Resources, Silver Spring, MD, 301-427-8403.

SUPPLEMENTARY INFORMATION:

Background

On April 28, 2010, we listed the Puget Sound/Georgia Basin Distinct Population Segments (DPSs) of yelloweye rockfish and canary rockfish as threatened under the Endangered Species Act (ESA), and bocaccio as endangered (75 FR 22276). We are responsible for determining whether species, subspecies, or distinct population segments (DPSs) are threatened or endangered and designating their critical habitat under the ESA (16 U.S.C. 1531 et seq.). In our proposal to list yelloweye rockfish, canary rockfish, and bocaccio (74 FR 18516, April 23, 2009), we requested information on the identification of specific areas that meet the definition of critical habitat. We also solicited biological and economic information relevant to making a critical habitat designation for each species. We reviewed the comments provided and the best available scientific information, and at the time of listing we concluded that critical habitat was not determinable for each species because sufficient information was not available to: (1) Identify the physical and biological features essential to conservation, and (2) assess the impacts of a designation. In addition to the data gaps identified at the time of listing, sufficient information was not available to fully determine the geographical area occupied by each species. Following promulgation of the final rule to list each species, we continued compiling the best available information necessary to consider a critical habitat designation and additional information is now available for these three DPSs to better inform the designation process.

We considered various alternatives to the proposed critical habitat designation for yelloweye rockfish, canary rockfish, and bocaccio of the Puget Sound/Georgia Basin. The alternative of not designating critical habitat for each species would impose no economic, national security, or other relevant impacts, but would not provide any conservation benefit to the species. This alternative was considered and rejected because it does not meet the legal requirements of the ESA and would not provide for the conservation of each species. The alternative of designating all potential critical habitat areas (i.e., no areas excluded) also was considered and rejected because for some areas the benefits of exclusion outweighed the benefits of inclusion. An alternative to designating all potential critical habitat areas is the designation of critical habitat within a subset of these areas. Under section 4(b)(2) of the ESA, we must consider the economic impacts, impacts on national security, and other relevant impacts of designating any particular area as critical habitat. The Secretary of Commerce (Secretary) has the discretion to exclude an area from designation as critical habitat if the benefits of exclusion (i.e., the impacts that would be avoided if an area were excluded from the designation) outweigh the benefits of designation (i.e., the conservation benefits to these species if an area were designated) so long as exclusion of the area will not result in extinction of the species. We prepared an analysis describing our exercise of discretion, which is contained in our final Section4(b)(2) Report (NMFS, 2013c). Under this alternative we propose to exclude Indian lands as well as several areas under the control of the Department of Defense (DOD). We selected this alternative because it results in a critical habitat designation that provides for the conservation of listed rockfish while avoiding impacts to Indian lands and impacts to national security. This alternative also meets the requirements under the ESA and our joint NMFS-U.S. Fish and Wildlife Service (USFWS) regulations concerning critical habitat.

Yelloweye Rockfish, Canary Rockfish, and Bocaccio Natural History and Habitat Use

Our draft Biological Report (NMFS, 2013a) describes the life histories of yelloweye rockfish, canary rockfish and bocaccio in detail, which are summarized here. Their life histories include pelagic larval and juvenile stages followed by a juvenile stage in shallower waters, and a sub-adult/adult stage. Much of the life history of these three species is similar, with differences noted below.

Rockfish are iteroparous (i.e., have multiple reproductive cycles during their lifetime) and are typically long-lived (Love et al., 2002). Yelloweye rockfish are one of the longest lived of the rockfishes, reaching more than 100 years of age. Yelloweye rockfish reach 50 percent maturity at sizes of 16 to 20 inches (40 to 50 centimeters) and ages of 15 to 20 years (Rosenthal et al., 1982; Yamanaka and Kronlund, 1997). The maximum age of canary rockfish is at least 84 years (Love et al. 2002), although 60 to 75 years is more common (Caillet et al., 2000). Canary rockfish reach 50 percent maturity at sizes around 16 inches (40 centimeters) and ages of 7 to 9 years. The maximum age of bocaccio is unknown, but may exceed 50 years. Bocaccio are reproductively mature near age 6 (FishBase, 2010). Mature females of each species produce from several thousand to over a million eggs annually (Love et al., 2002). Being long-lived allows each species to persist through many years of poor reproduction until a good recruitment year occurs.

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Rockfish fertilize their eggs internally and the young are extruded as larvae. Upon parturition (birth), larval rockfish can occupy the full water column but generally occur in the upper 80 m (262 feet) (Love et al., 2002; Weis, 2004). Larval rockfish have been documented in Puget Sound (Greene and Godersky, 2012), yet most studies have not identified individual fish to species. There is little information regarding the habitat requirements of rockfish larvae, though other marine fish larvae biologically similar to rockfish larvae are vulnerable to low dissolved oxygen levels and elevated suspended sediment levels that can alter feeding rates and cause abrasion to gills (Boehlert, 1984; Boehlert and Morgan, 1985; Morgan and Levings, 1989). Larvae have also been observed immediately under free-floating algae, seagrass, and detached kelp (Shaffer et al., 1995; Love et al., 2002). Oceanographic conditions within many areas of Puget Sound likely result in the larvae staying within the basin where they are born rather than being more broadly dispersed by tidal action or currents (Drake et al., 2010).

Pelagic juveniles occur throughout the water column (Love et al., 2002; Weis, 2004). When bocaccio and canary rockfish reach sizes of 1 to 3.5 inches (3 to 9 centimeters) or 3 to 6 months old, they settle into shallow, intertidal, nearshore waters in rocky, cobble and sand substrates with or without kelp (Love et al., 1991; Love et al., 2002). This habitat feature offers a beneficial mix of warmer temperatures, food, and refuge from predators (Love et al., 1991). Areas with floating and submerged kelp species support the highest densities of juvenile bocaccio and canary rockfish, as well as many other rockfish species (Carr, 1983; Halderson and Richards, 1987; Matthews, 1989; Love et al., 2002). Unlike bocaccio and canary rockfish, juvenile yelloweye rockfish are not typically found in intertidal waters (Love et al. 1991; Studebaker et al. 2009), but are most frequently observed in waters deeper than 98 feet (30 meters) near the upper depth range of adults (Yamanaka et al., 2006).

Depth is generally the most important determinant in the distribution of many rockfish species of the Pacific coast (Chen, 1971; Williams and Ralston, 2002; Anderson and Yoklavich, 2007;Young et al., 2010). Adult yelloweye rockfish, canary rockfish, and bocaccio generally occupy habitats from approximately 30 to 425 m (90 ft to 1,394 ft) (Orr et al., 2000; Love et al., 2002), and in Federal waters off the Pacific coast each species is considered part of the ``shelf rockfish'' assemblage under the authorities of the Magnuson-Stevens Fishery Conservation and Management Act because of their generally similar habitat usages (50 CFR Part 660, Subparts C-G).

Adult yelloweye rockfish, canary rockfish, and bocaccio most readily use habitats within and adjacent to areas that are highly rugose (rough). These are benthic habitats with moderate to extreme steepness; complex bathymetry; and/or substrates consisting of fractured bedrock, rock, and boulder-cobble complexes (Yoklavich et al., 2000; Love et al., 2002; Wang, 2005; Anderson and Yoklavich, 2007). Most of the benthic habitats in Puget Sound consist of unconsolidated materials such as mud, sand, clays, cobbles and boulders, and despite the relative lack of rock, some of these benthic habitats are moderately to highly rugose. More complex marine habitats are generally used by higher numbers of fish species relative to less complex areas (Anderson and Yoklavich, 2007; Young et al., 2010), thus supporting food sources for sub-adult and adult yelloweye rockfish, canary rockfish, and bocaccio. More complex marine habitats also provide refuge from predators and their structure may provide shelter from currents, thus leading to energy conservation (Young et al., 2010).

Though areas near rocky habitats or other complex structure are most readily used by adults of each species, non-rocky benthic habitats are also occupied. In Puget Sound, adult yelloweye rockfish, canary rockfish, and bocaccio have been documented in areas with non-rocky substrates such as sand, mud, and other unconsolidated sediments (Haw and Buckley, 1971; Washington, 1977; Miller and Borton, 1980; Reum, 2006).

Prey

Food sources for yelloweye rockfish, canary rockfish, and bocaccio occur throughout Puget Sound. However, each of the basins has unique biomass and species compositions of fishes and invertebrates, which vary temporally and spatially (Rice, 2007; Rice et al., 2012). Absolute and relative abundance and species richness of most fish species in the Puget Sound/Georgia Basin increase with latitude (Rice, 2007; Rice et al., 2012). Despite these differences, each basin hosts common food sources for yelloweye rockfish, canary rockfish, and bocaccio as described below.

Larval and juvenile rockfish feed on very small organisms such as zooplankton, copepods and phytoplankton, small crustaceans, invertebrate eggs, krill, and other invertebrates (Moser and Boehlert, 1991; Love et al., 1991; Love et al., 2002). Larger juveniles also feed upon small fish (Love et al., 1991). Adult yelloweye rockfish, canary rockfish, and bocaccio have diverse diets that include many species of fishes and invertebrates including but not limited to crabs, various rockfish (Sebastes spp.), flatfish (Pleuronectidae spp.), juvenile salmon (Oncorhynchus spp.), walleye pollock, (Theragra chalcogramma), Pacific hake (Merluccius productus), Pacific cod (Gadus macrocephalus), green sea urchin (Stongylocentrotus droebachiensis), lingcod (Ophiodon elongates) eggs, various shrimp species (Pandalus spp.), and perch (Rhacochilus spp.). Common forage fish that are part of their diets include Pacific herring (Clupea harengus pallasi), surf smelt (Hypomesus pretiosus), and Pacific sand lance (Ammodytes hexapterus) (Washington et al., 1978; Lea et al., 1999; Love et al., 2002; Yamanaka et al., 2006).

Statutory and Regulatory Background for Critical Habitat Designations

The ESA defines critical habitat under section 3(5)(A) as: ``(i) The specific areas within the geographical area occupied by the species, at the time it is listed . . . , on which are found those physical or biological features (I) essential to the conservation of the species and (II) which may require special management considerations or protection; and (ii) specific areas outside the geographical area occupied by the species at the time it is listed . . . upon a determination by the Secretary of Commerce that such areas are essential for the conservation of the species.''

Section 4(a) of the ESA precludes military land from designation, where that land is covered by an Integrated Natural Resource Management Plan that the Secretary has found in writing will benefit the listed species.

Section 4(b)(2) of the ESA requires us to designate critical habitat for threatened and endangered species ``on the basis of the best scientific data available and after taking into consideration the economic impact, the impact on national security, and any other relevant impact, of specifying any particular area as critical habitat.'' It grants the Secretary of Commerce (Secretary) discretion to exclude any area from critical habitat if he determines ``the benefits of such exclusion outweigh the benefits of specifying such area as part of the critical habitat.'' In adopting this provision, Congress explained that, ``the consideration and weight given to any particular impact is completely within the Secretary's discretion.'' H.R.

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No. 95-1625, at 16-17 (1978). The Secretary's discretion to exclude is limited, as he may not exclude areas that ``will result in the extinction of the species.''

Once critical habitat is designated, section 7 of the ESA requires Federal agencies to ensure they do not fund, authorize, or carry out any actions that will destroy or adversely modify that habitat. This requirement is in addition to the section 7 requirement that Federal agencies ensure their actions do not jeopardize the continued existence of listed species.

Methods and Criteria Used To Identify Specific Areas Eligible for Critical Habitat

In the following sections, we describe the relevant definitions and requirements in the ESA and our implementing regulations and the key methods and criteria used to prepare this proposed critical habitat designation. Discussion of the specific implementation of each item occurs within the species-specific sections. In accordance with section 4(b)(2) of the ESA and our implementing regulations (50 CFR 424.12), this proposed designation is based on the best scientific information available concerning the species' present and historical range, habitat, and biology, as well as threats to their habitat. In preparing this proposed designation, we reviewed and summarized current information on these species, including recent biological surveys and reports, peer-reviewed literature, NMFS status reviews, and the proposed and final rules to list these species. All of the information gathered to create this proposed rule has been collated and analyzed in three supporting documents: A Draft Biological Report (NMFS, 2013a); a Draft Economic Analysis (NMFS, 2013b); and a Draft Section 4(b)(2) Report (NMFS, 2013c). We used these reports to inform the identification of specific areas as critical habitat. We followed a five-step process in order to identify these specific areas: (1) Determine the geographical area occupied by the species at the time of listing, (2) identify physical or biological habitat features essential to the conservation of the species, (3) delineate specific areas within the geographical area occupied by the species on which are found the physical or biological features, (4) determine whether the features in a specific area may require special management considerations or protections, and (5) determine whether any unoccupied areas are essential for conservation. As described later, we did not identify any unoccupied areas that are essential for conservation. Once we have identified specific areas, we then considered the economic impact, impact on national security, and any other relevant impacts. The Secretary has the discretion to exclude an area from designation if he determines the benefits of exclusion (that is, avoiding the impact that would result from designation), outweigh the benefits of designation based on the best available scientific and commercial information. Our evaluation and determinations are described in detail in the following sections, in addition to our consideration of military lands.

Geographical Area Occupied by the Species

In the status review and final ESA listing for each species, we identified a Puget Sound/Georgia Basin DPS for yelloweye rockfish, canary rockfish, and bocaccio (Drake et al. 2010; 75 FR 22276, April 28, 2010). Our review of the best available data confirmed that yelloweye rockfish, canary rockfish, and bocaccio occupy each of the major biogeographic basins of the Puget Sound/Georgia Basin (NMFS, 2013a). The range of the DPS includes portions of Canada; however, we cannot designate areas outside U.S. jurisdiction as critical habitat (50 CFR 424.12(h)). Puget Sound and Georgia Basin make up the southern arm of an inland sea located on the Pacific Coast of North America and connected to the Pacific Ocean by the Strait of Juan de Fuca. The term ``Puget Sound proper'' refers to the waters east of and including Admiralty Inlet. Puget Sound is a fjord-like estuary covering 2,331.8 sq mi (6,039.3 sq km) and has 14 major river systems and its benthic areas consist of a series of interconnected basins separated by relatively shallow sills, which are bathymetric shallow areas.

Physical or Biological Features Essential to Conservation

Agency regulations at 50 CFR 424.12(b) interpret the statutory phrase ``physical or biological features essential to the conservation of the species.'' The regulations state that these features include, but are not limited to, space for individual and population growth and for normal behavior; food, water, air, light, minerals, or other nutritional or physiological requirements; cover or shelter; sites for breeding, reproduction, and rearing of offspring; and habitats that are protected from disturbance or are representative of the historical geographical and ecological distribution of a species. These regulations go on to emphasize that the agency shall focus on ``primary constituent elements'' within the specific areas considered for designation. The regulations state:

Primary constituent elements may include, but are not limited to, the following: roost sites, nesting grounds, spawning sites, feeding sites, seasonal wetland or dryland, water quality or quantity, host species or plant pollinator, geological formation, vegetation type, tide, and specific soil types.

Based on the best available scientific information regarding natural history and habitat needs, we developed a list of physical and biological features essential to the conservation of adult and juvenile yelloweye rockfish, canary rockfish, and bocaccio and relevant to determining whether proposed specific areas are consistent with the above regulations and the ESA section (3)(5)(A) definition of ``critical habitat.'' We do not currently have sufficient information regarding the habitat requirements of larval yelloweye rockfish, canary rockfish, and bocaccio to determine which features are essential for conservation, and thus are not proposing to designate critical habitat specifically for this life-stage. However, we will continue to investigate this issue and seek comment on it as part of this proposed rule. The physical or biological features essential to the conservation of yelloweye rockfish, canary rockfish, and bocaccio fall into major categories reflecting key life history phases:

Physical or Biological Features Essential to the Conservation of Adult Canary Rockfish and Bocaccio, and Adult and Juvenile Yelloweye Rockfish

Benthic habitats or sites deeper than 30m (98ft) that possess or are adjacent to areas of complex bathymetry consisting of rock and or highly rugose habitat are essential to conservation because these features support growth, survival, reproduction, and feeding opportunities by providing the structure for rockfish to avoid predation, seek food and persist for decades. Several attributes of these sites determine the quality of the habitat and are useful in considering the conservation value of the associated feature, and whether the feature may require special management considerations or protection. These attributes are also relevant in the evaluation of the effects of a proposed action in a section 7 consultation if the specific area containing the site is designated as critical habitat. These attributes include: (1) Quantity, quality, and availability of prey species to support individual growth, survival, reproduction, and feeding opportunities, (2) water quality and sufficient levels of dissolved oxygen to

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support growth, survival, reproduction, and feeding opportunities, and (3) the type and amount of structure and rugosity that supports feeding opportunities and predator avoidance.

Physical and Biological Features Essential to the Conservation of Juvenile Canary Rockfish and Bocaccio

Juvenile settlement habitats located in the nearshore with substrates such as sand, rock and/or cobble compositions that also support kelp (families Chordaceae, Alariaceae, Lessoniacea, Costariaceae, and Laminaricea) are essential for conservation because these features enable forage opportunities and refuge from predators and enable behavioral and physiological changes needed for juveniles to occupy deeper adult habitats. Several attributes of these sites determine the quality of the area and are useful in considering the conservation value of the associated feature and, in determining whether the feature may require special management considerations or protection. These features also are relevant to evaluating the effects of a proposed action in a section 7 consultation if the specific area containing the site is designated as critical habitat. These attributes include: (1) Quantity, quality, and availability of prey species to support individual growth, survival, reproduction, and feeding opportunities; and (2) water quality and sufficient levels of dissolved oxygen to support growth, survival, reproduction, and feeding opportunities.

Specific Areas Within the Geographical Area Occupied by the Species

After determining the geographical area of the Puget Sound/Georgia Basin occupied by adult and juvenile yelloweye rockfish, canary rockfish, and bocaccio, and the physical and biological features essential to their conservation, we next identified the specific areas within the geographical area occupied by the species that contain the essential features. The U.S. portion of Puget Sound/Georgia Basin that is occupied by yelloweye, canary, and bocaccio can be divided into five biogeographic basins or areas based on the presence and distribution of adult and juvenile rockfish, geographic conditions, and habitat features (Figure 1). These five interconnected areas are: (1) The San Juan/Strait of Juan de Fuca Basin, (2) Main Basin, (3) Whidbey Basin, (4) South Puget Sound, and (5) Hood Canal (Drake et al., 2010, NMFS 2013a). These interconnected basins are separated by relatively shallow sills. The configuration of sills and deep basins results in the partial recirculation of water masses in the Puget Sound and the retention of contaminants, sediment, and biota (Strickland, 1983). The sills largely define the boundaries between the basins and contribute to the generation of relatively fast water currents during portions of the tidal cycle. The sills, in combination with bathymetry, freshwater input, and tidal exchange, influence environmental conditions such as the movement and exchange of biota from one region to the next, water temperatures and water quality, and they also restrict water exchange (Ebbesmeyer et al., 1984; Burns, 1985; Rice, 2007). In addition, each basin differs in biological condition; depth profiles and contours; sub-tidal benthic, intertidal habitats; and shoreline composition and condition (Downing, 1983; Ebbesmeyer et al., 1984; Burns, 1985; Rice, 2007; Drake et al., 2010). These areas also meet the definition of specific areas under ESA section (3)(5)(A) because each one contains the essential physical and biological features for juvenile rearing and/or adult reproduction, sheltering, or feeding for yelloweye rockfish, canary rockfish, and bocaccio. We do not currently have sufficient information regarding the habitat requirements of larval yelloweye rockfish, canary rockfish, and bocaccio to allow us to determine essential features specific to the larval life stage.

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We considered the distribution of the essential features within these areas. We used available geographic data to

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delineate and map the essential features within each of the specific areas.

Delineating and Mapping Areas of Complex Bathymetry Deeper than 30 Meters Containing Features Essential to the Conservation of Adult Canary, Yelloweye and Bocaccio Rockfish and Juvenile Yelloweye

To determine the distribution of essential features of benthic habitats deeper than 30 m (98 ft) with complex bathymetry, we relied on benthic habitat characterizations of each of the five basins of Puget Sound. We used the Benthic Terrain Model (BTM) developed by the NMFS Northwest Fisheries Science Center, which classifies terrain in all five basins (Davies, 2009). We also assessed recent benthic maps in the San Juan Basin (Greene and Barrie, 2011; Greene, 2012). We used these information sources to assess the presence of complex bathymetry in waters deeper than 30 m (98 ft).

The BTM is a collection of ArcGIS-based terrain visualization tools that can be used to examine the deepwater benthic environment using input bathymetric data sets. High resolution bathymetric data, most often obtained through acoustic means such as multibeam sonar mapping instruments, creates a digital representation of seafloor topography. The spatial analysis functions of a geographic information system (GIS) allow for the extraction of several derived products from bathymetric data, such as slope, bathymetric position, and rugosity. The BTM can also be used to classify data based on a combination of slope (a first-

order derivative of bathymetry), and broad- and fine-scaled bathymetric position indices (Bathymetric Position Index, second-order derivatives of bathymetry) describing the depth of a specific point relative to the surrounding bathymetry, and produces grid layers of terrain-based zones and structures. The BTM classifies benthic terrain at a 30 m (98 ft) grid scale in several categories that include flats, depressions, crests, shelves, and slopes, but does not delineate benthic substrate type. The BTM also provides a ``rugosity'' value, which is a measurement of variations or amplitude in the height of a surface--in this case, the seafloor (Kvitek et al., 2003; Dunn and Halpin, 2009). Rugosity values range from 0 (i.e., flat habitat) to 5.7 (very complex habitat). We refer to benthic areas with rugosity values of 1.005 or higher as ``high rugosity.'' We selected a rugosity value of 1.005 and higher as representing the presence of this essential feature because the spatial area mapped as proposed critical habitat at that level of rugosity encompassed the vast majority of the documented occurrences with precise spatial data of yelloweye rockfish (90%), canary rockfish (86%), and bocaccio (92%) within the DPSs (NMFS, 2013a). Rugosity values can be used as a surrogate for reef fish diversity when other data on habitats are lacking (Pittman et al. 2007). Similarly, areas of high rugosity have been used as an indicator of hard-bottomed habitat (Dunn and Halpin 2009).

In addition to the BTM, we used available benthic maps to assess rockfish habitat in the San Juan Basin. Unlike the rest of the basins of the Puget Sound, comprehensive seafloor characterization and mapping has occurred in most of the San Juan Archipelago and southern Georgia Strait (Greene and Barrie, 2011; Greene, 2012). This mapping was generated by multibeam and backscatter sonar surveys. These habitat maps provide information on the benthic terrain for most of the San Juan area, including specific benthic terrain types (i.e., ``fractured bedrock'' and ``hummocky unconsolidated sediments''), which can be used to identify complex bathymetry.

We analyzed whether the BTM encompassed the rocky habitats of the San Juan Islands mapped by Green and Barrie (2011) and found just over 1 sq mi (1.6 sq km) was composed of rock but not identified as having rugosity values equal to or greater than 1.005 by the BTM. This is just 2 percent of the overall amount of rocky areas mapped by Green and Barrie (2011). This assessment served as verification that the BTM's rugosity values of equal to or greater than 1.005 encompass most rocky terrain in the San Juan Basin. In addition to the areas identified as high rugosity by the BTM, we concluded that the 2 percent of rocky areas in the San Juan Basin not characterized as high rugosity contain the essential features of rockfish critical habitat and were added to the final distribution map for this essential feature (NMFS, 2013a).

Delineating and Mapping Settlement Sites Containing Features Essential to the Conservation of Juvenile Canary and Boccacio Rockfish

In delineating juvenile settlement sites in Puget Sound, we focused on the area contiguous with the shoreline from extreme high water out to a depth no greater than 30 meters relative to mean lower low water because this area coincides with the maximum depth of the photic zone in Puget Sound and thus, with appropriate substrates that can support the growth of kelp and rearing canary rockfish and bocaccio. To determine the distribution of essential features of nearshore habitats for juvenile canary rockfish and bocaccio, we used the Washington State Department of Natural Resources' (DNR) shorezone inventory (Berry, 2001) in combination with the benthic habitat classifications of the BTM related to the locations where moderate and large rivers enter Puget Sound (NMFS, 2013a).

The DNR shorezone habitat classifications are available for all of the shoreline within the ranges of the DPSs. We used the habitat characteristics described in the shorezone inventory to assist in determining if essential features for juvenile canary rockfish and bocaccio occur along particular nearshore areas. The shorezone inventory was conducted by aerial visual surveys between 1994 and 2000 along all of Washington State's shorelines (Berry et al., 2001). The DNR subdivided beaches into units that are sections of beach with similar geomorphic characteristics. Within each unit, the DNR documented the presence of eelgrass or kelp, among other biological parameters. There are 6,856 shoreline segments in the range of the rockfish DPSs, ranging from 0.02 to 14 kilometers (0.01 to 8.7 mi) in length. The DNR delineated 15 different geomorphic shoreline types. The DNR's mapping of aquatic vegetation had limitations, because shoreline segments were observed by aerial surveys during different years and months. Aquatic vegetation growth, including kelp, is variable from month to month and year to year. Some kelp species are annuals, thus surveys that took place during non-growing seasons may have not mapped kelp beds where they actually occur. Non-floating kelp species in particular may have also been underestimated by the DNR survey methods because they were more difficult to document than floating kelp. In particular, all kelp species mapped were usually not visible to their lower depth limit because of poor visibility through the water column. While beds of vegetation may have been visible underwater, often it was not possible to determine what particular type of vegetation was present because of a lack of color characteristics. In addition, because floating kelp occurs in shallow waters, off-shore of the area visible from the aircraft, it was not mapped in many cases. For these reasons, the mapped kelp within the shorezone database represents an underestimation of the total amount of kelp along Puget Sound shorelines.

To determine which shorelines contained the essential features for

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juvenile canary rockfish and bocaccio, we reviewed their geomorphic classifications to see if they possessed ``substrates such as sand, rock and/or cobble compositions.'' In addition, we assessed the relative overlap of mapped kelp in these shoreline types. All but the ``Estuary Wetland'' and ``Mud Flat'' type shoreline segments had at least 20 percent of the segment with ``continuous'' or ``sporadic'' kelp mapped by DNR. The Estuary Wetland and Mud Flat type segments had very small portions of kelp (1.5 and 2.6 percent, respectively). We found that the Estuary Wetland and Mud Flat type shoreline segments longer than one-half lineal mile in length lack essential features for canary rockfish and bocaccio.

To assess nearshore estuaries and deltas of moderate and large rivers that enter Puget Sound, we used information from Burns (1983) and Teizeen (2012) to determine the location and annual flows of these rivers. These rivers input various volumes of sediment and fresh water into Puget Sound (Downing, 1983; Burns, 1985; Czuba et al., 2011) and profoundly influence local benthic habitat characteristics, salinity levels, and local biota. The nearshore areas adjacent to moderate-to-

large river deltas are characterized by the input of fresh water and fine sediments that create relatively flat habitats (termed ``shelves'' by the BTM) that do not support the growth of kelp (NMFS, 2013a). In addition, the net outward flow of these deltas may prevent post-

settlement juvenile canary rockfish or bocaccio from readily using these habitats. For these reasons we found that these nearshore areas do not contain the essential features of rearing sites for canary rockfish or bocaccio (juvenile yelloweye rockfish most commonly occupy waters deeper than the nearshore).

The DNR shorezone survey did not delineate the geomorphic extent of shoreline segments associated with estuaries and deltas. Thus we determined the geographical extent of these estuaries and shelves from the BTM ``shelf'' seafloor designation associated with the particular river because it indicates the geomorphic extension of the tidal and sub-tidal delta where fresh water enters Puget Sound. Not all of the shorelines associated with estuaries and deltas were labeled as ``estuary wetland'' and ``mud flat'' by DNR, thus we delineated juvenile settlement sites located in the nearshore at the border of these deltas at either the geomorphic terminus of the delta at the 30 m (98 ft) contour, and/or at the shoreline segment mapped with kelp by the DNR. By doing this, we eliminated some of the other shorezone geomorphic shoreline types from proposed critical habitat designation because available information did not support the presence of essential features at some specific areas adjacent to moderate to large rivers (see NMFS, 2013a).

Special Management Considerations or Protection

An occupied area cannot be designated as critical habitat unless it contains physical or biological features that ``may require special management considerations or protection.'' Agency regulations at 50 CFR 424.02(j) define ``special management considerations or protection'' to mean ``any methods or procedures useful in protecting physical and biological features of the environment for the conservation of listed species.'' Many forms of human activities have the potential to affect the essential features of listed rockfish species: (1) Nearshore development and in-water construction (e.g., beach armoring, pier construction, jetty or harbor construction, pile driving construction, residential and commercial construction); (2) dredging and disposal of dredged material; (3) pollution and runoff; (4) underwater construction and operation of alternative energy hydrokinetic projects (tidal or wave energy projects) and cable laying; (5) kelp harvest; (6) fisheries; (7) non-indigenous species introduction and management; (8) artificial habitats; (9) research activities; and (10) aquaculture. All of these activities may have an effect on one or more physical or biological features via their potential alteration of one or more of the following: adult habitats, food resources, juvenile settlement habitat, and water quality. Further detail regarding the biological and ecological effect of these species management considerations is found in the draft Biological Report (NMFS, 2013a).

Descriptions of Essential Features and Special Management Considerations in Each Specific Area

We describe the five basins (the specific areas) of the Puget Sound below in terms of their biological condition and attributes, and full details are found in the biological report supporting this proposed designation (NMFS, 2013a). Each basin has different levels of human impacts related to the sensitivity of the local environment, and degree and type of human-derived impacts. We have also included examples of some of the activities that occur within these basins that affect the essential features such that they may require special management considerations or protection.

The San Juan/Strait of Juan de Fuca Basin--This basin is the northwestern boundary of the U.S. portion of the DPSs. The basin is delimited to the north by the Canadian border and includes Bellingham Bay, to the west by the entrance to the Strait of Juan de Fuca, to the south by the Olympic Peninsula and Admiralty Inlet, and to the east by Whidbey Island and the mainland between Anacortes and Blaine, Washington. The predominant feature of this basin is the Strait of Juan de Fuca, which is 99.4 mi (160 km) long and varies from 13.7 mi (22 km) wide at its western end to over 24.9 mi (40 km) wide at its eastern end (Thomson, 1994). Drake et al. (2010) considered the western boundary of the DPSs as the Victoria Sill because it is hypothesized to control larval dispersal for rockfish (and other biota) of the region. Water temperatures are lower and more similar to coastal marine waters than to Puget Sound proper, and circulation in the strait consists of a seaward surface flow of diluted seawater (33.0 psu) at depth (Drake et al., 2010). Water exchange in this basin has not been determined because, unlike the rest of the basins of the DPSs, it is more oceanic in character and water circulation is not nearly as constrained by geography and sills as it is in the other basins.

The San Juan/Strait of Juan de Fuca Basin has the most rocky shoreline and benthic habitats of the U.S. portion of the DPSs. Most of the basin's numerous islands have rocky shorelines with extensive, submerged aquatic vegetation and floating kelp beds necessary for juvenile canary rockfish and bocaccio settlement sites.

This basin also contains abundant sites deeper than 30 meters that possess or are adjacent to areas of complex bathymetry. Approximately 93 percent of the rocky benthic habitats of the U.S. portion of the range of all three DPSs are in this basin (Palsson et al., 2009). Plate tectonic processes and glacial scouring/deposition have produced a complex of fjords, grooved and polished bedrock outcrops, and erratic boulders and moraines along the seafloor of the San Juan Archipelago (Greene, 2012). Banks of till and glacial advance outwash deposits have also formed and contribute to the variety of relief and habitat within the basin. These processes have contributed to the development of benthic areas with complex bathymetry.

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Yelloweye rockfish, canary rockfish, and bocaccio have been documented in the San Juan Archipelago, in addition to the southern portion of this basin along the Strait of Juan de Fuca (Washington, 1977; Moulton and Miller, 1987; Pacunski, 2013). The southern portion of this basin has several pinnacles that include Hein, Eastern, Middle, MacArthur, Partridge, and Coyote Banks. Yelloweye rockfish were once commonly caught by anglers along these areas, particularly Middle Bank (Olander, 1991).

As described in more detail in the biological report (NMFS, 2013a), there are several activities that occur in this basin that affect the essential features such that they may require special management considerations. Commercial and recreational fisheries occur here, as well as scientific research. The highest concentration of derelict fishing nets in the DPSs remain here, including over 100 nets in waters deeper than 100 ft (30.5 m) (NRC, 2010), and an estimated 705 nets in waters shallower than 100 ft (30.5 m) (Northwest Straits Initiative, 2011). Because this basin has the most kelp in the DPSs, commercial harvest of kelp could be proposed for the San Juan Islands area. The Ports of Bellingham and Anacortes are located in this basin, and numerous dredging and dredge disposal projects and nearshore development, such as new docks, piers, and bulkheads occur in this basin. These development actions have the potential to alter juvenile settlement sites of canary rockfish and bocaccio. Two open-water dredge disposal sites are located in the basin, one in Rosario Strait and the other northwest of Port Townsend. These are termed dispersive sites because they have higher current velocities; thus, dredged material does not accumulate at the disposal site and settles on benthic environments over a broad area (Army Corps of Engineers, 2010). Sediment disposal activities in this specific area may temporarily alter water quality (dissolved oxygen levels) and feeding opportunities (the ability of juvenile rockfish to seek out prey). There are several areas with contaminated sediments along the eastern portion of this basin, particularly in Bellingham Bay and Guemes Channel near Anacortes.

Whidbey Basin--The Whidbey Basin includes the marine waters east of Whidbey Island and is delimited to the south by a line between Possession Point on Whidbey Island and Meadowdale, south of Mukilteo. The northern boundary is Deception Pass at the northern tip of Whidbey Island. The Skagit, Snohomish, and Stillaguamish Rivers flow into this basin and contribute the largest influx of freshwater inflow to Puget Sound (Burns, 1985). Water retention is approximately 5.4 months due to the geography and sills at Deception Pass (Ebbesmeyer et al., 1984).

Most of the nearshore of the Whidbey Basin consists of bluff-backed beaches with unconsolidated materials ranging from mud and sand to mixes or gravels and cobbles (McBride 2006). Some of these nearshore areas support the growth of kelp. Some of the northern part of this basin is relatively shallow with moderately flat bathymetry near the Skagit, Stillaguamish and Snohomish River deltas and does not support kelp growth because it lacks suitable areas for holdfast attachment, such as rock and cobble.

Benthic areas in this basin contain sites deeper than 30 meters that possess or are adjacent to areas of complex bathymetry. The southern portion of the basin has more complex bathymetry compared to the north, with deeper waters adjacent to Whidbey Island, southern Camano Island, and near the City of Mukilteo.

Yelloweye rockfish, canary rockfish, and bocaccio have been documented in the Whidbey basin, with most occurrences within the southern portion near south Camano Island, Hat (Gedney) Island, and offshore of the City of Mukilteo. It is not known if the southern portion of the Whidbey basin has more attractive rockfish habitat compared to the northern portion, or if most documented occurrences are a reflection of uneven sampling effort over the years.

As described in more detail in the biological report, there are several activities that occur in this basin that affect the essential features such that they may require special management considerations. Activities include commercial and recreational fisheries, scientific research, dredging projects and dredge disposal operations, nearshore development projects, aquaculture and tidal energy projects. An estimated 18 derelict nets remain in waters shallower than 100 ft (30.5 m) in this basin (Northwest Straits Initiative, 2011). A potential tidal energy site is located within the Deception Pass area, at the northern tip of Whidbey Island. Pollution and runoff are also concerns in this basin, mostly near the Port Gardner area. There are several areas with contaminated sediments along the eastern portion of this basin, particularly near the Cities of Mukilteo and Everett.

Main Basin--The 62.1 mi (100 km) long Main Basin is delimited to the north by a line between Point Wilson near Port Townsend and Partridge Point on Whidbey Island, to the south by Tacoma Narrows, and to the east by a line between Possession Point on Whidbey Island and Meadow Point. The sill at the border of Admiralty Inlet and the eastern Straits of Juan de Fuca regulates water exchange of Puget Sound (Burns, 1985). The Main Basin is the largest basin, holding 60 percent of the water in Puget Sound proper. Water retention is estimated to be one month due to the sills at Admiralty Inlet and Deception Pass (Ebbesmeyer et al., 1984).

Approximately 33 percent (439.3 mi (707 km)) of Puget Sound's shoreline occurs within this basin and nearshore habitats consist of bluff-backed beaches with unconsolidated materials ranging from mud and sand to mixes or gravels and cobbles (Drake et al., 2010). Some of these nearshore areas support the growth of kelp. Subtidal surface sediments in Admiralty Inlet tend to consist largely of sand and gravel, whereas sediments just south of the inlet and southwest of Whidbey Island are primarily sand. Areas deeper than 30 meters in the Main Basin have varying amounts of sites that possess or are adjacent to areas of complex bathymetry. Sediments in the deeper areas of the central portion of the Main Basin generally consist of mud or sandy mud (Bailey et al., 1998) and are generally not complex. Possession Point is centrally located within this basin at the southern end of Whidbey Island, and has relatively steep eastern, southern, and western edges and also has some rocky substrates (Squire and Smith, 1977). There are benthic areas deeper than 98 ft (30 m) along Possession Point, Admiralty Inlet and the rims of Puget Sound beyond the nearshore that feature complex bathymetry, with slopes and areas of high rugosity.

Yelloweye rockfish, canary rockfish, and bocaccio have been documented at Possession Point, near the port of Kingston and Apple Cove, and along much of the eastern shoreline of this basin (Washington, 1977; Moulton and Miller, 1987).

As described in more detail in the biological report, there are several activities that occur in this basin that affect the essential features such that they may require special management considerations. Activities include commercial and recreational fisheries, scientific research, dredging projects and dredge disposal operations, nearshore development projects, aquaculture and tidal energy projects. An estimated 75 derelict nets in waters

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shallower than 100 ft (30.5 m) remain in this basin (Northwest Straits Initiative, 2011). A planned tidal energy site is located within the Admiralty Inlet area off Whidbey Island. Pollution and runoff are also concerns in this basin because of extensive amounts of impervious surface located on its eastern side. Two open-water dredge disposal sites are located in the basin, one located in Elliot Bay and the other in Commencement Bay. These are non-dispersive disposal sites, which are areas where currents are slow enough that dredged material is deposited on the disposal target area rather than dispersing broadly with prevailing currents (Army Corps of Engineers, 2010). An estimated 36 percent of the shoreline in this area has been modified by human activities (Drake et al., 2010) and bulkhead/pier repair projects and new docks/piers are proposed regularly in this basin. There are several areas with contaminated sediments in this basin, particularly in Elliot Bay, Sinclair Inlet, and Commencement Bay.

South Puget Sound--This basin includes all waterways south of Tacoma Narrows, and is characterized by numerous islands and shallow (generally 29.3 percent; sand, 21.7 23.9 percent; mixed fine, 22.9 16.1 percent; and gravel, 11.1 4.9 percent. Subtidal areas have a similar diversity of surface sediments, with shallower areas consisting of mixtures of mud and sand and deeper areas consisting of mud (Puget Sound Water Quality Authority, 1987). The southern inlets of this basin include Oakland Bay, Totten Inlet, Bud Inlet and Eld Inlet, in addition to the Nisqually River delta. These inlets have relatively muddy habitats that do not support essential nearshore features such as holdfasts for kelp, and rock and cobble areas for rearing juvenile canary rockfish and bocaccio. Despite the prevalence of muddy and sandy substrate in the southern portion of this basin, some of these nearshore areas support the growth of kelp and therefore contain juvenile settlement sites.

With a mean depth of 121 ft (37 m), this basin is the shallowest of the five basins (Burns 1985). Benthic areas deeper than 98 ft (30 m) occur in portions of the Tacoma Narrows and Dana Passage and around the rims of the basin. Sediments in Tacoma Narrows and Dana Passage consist primarily of gravel and sand. The rims of South Puget Sound beyond the nearshore feature complex bathymetry, with slopes and areas of high rugosity.

Yelloweye rockfish, canary rockfish, and bocaccio have been documented within the South Puget Sound (NMFS, 2013a). Canary rockfish may have been historically most abundant in the South Sound (Drake et al., 2010).

As described in more detail in the biological report, there are several activities that occur in this basin that affect the essential features such that they may require special management considerations. Activities include commercial and recreational fisheries, scientific research, dredging and dredge disposal, nearshore development, pollution and runoff, aquaculture operations, and potential tidal energy projects. An estimated 4 derelict nets in waters shallower than 100 ft (30.5 m) remain in this basin (Northwest Straits Initiative, 2011). A non-dispersive dredge disposal site is located off Anderson/

Ketron Island (Army Corps of Engineers, 2010). A potential tidal energy site is located in the Tacoma Narrows area. Important point sources of waste include sewage treatment facilities, and about 5 percent of the nutrients (as inorganic nitrogen) entering greater Puget Sound enter this basin through nonpoint sources (Embrey and Inkpen, 1998). An estimated 34 percent of the shoreline in this area has been modified by human activities (Drake et al., 2010), and bulkhead/pier repair projects and new docks/piers are proposed regularly in this basin. The major urban areas, and thus more pollution and runoff into the South Puget Sound, are found in the western portions of Pierce County. Other urban centers in Southern Puget Sound include Olympia and Shelton. There are several areas with contaminated sediments in this basin in Carr Inlet and near Olympia.

Hood Canal--Hood Canal branches off the northwest part of the Main Basin near Admiralty Inlet and is the smallest of the greater Puget Sound basins, being 55.9 mi (90 km) long and 0.6 to 1.2 mi (1 to 2 km) wide (Drake et al., 2010). Water retention is estimated at 9.3 months; exchange in Hood Canal is regulated by a 164-foot (50-meter) deep sill near its entrance that limits the transport of deep marine waters in and out of Hood Canal (Ebbesmeyer et al., 1984; Burns, 1985). The major components of this basin consist of the Hood Canal entrance, Dabob Bay, the central basin, and the Great Bend at the southern end. A combination of relatively little freshwater inflow, the sill at Admiralty Inlet, and bathymetry lead to relatively slow currents; thus, water residence time within Hood Canal is the longest of the biogeographic basins, with net surface flow generally northward (Ebbesmeyer et al., 1984).

The intertidal and nearshore zone consists mostly of mud (53.4 89.3 percent of the intertidal area), with similar amounts of mixed fine sediment and sand (18.0 18.5 percent and 16.7 13.7 percent, respectively) (Bailey et al., 1998). Some of the nearshore areas of Hood Canal have cobble and gravel substrates intermixed with sand that support the growth of kelp. Surface sediments in the subtidal areas also consist primarily of mud and cobbles (Puget Sound Water Quality Authority, 1987). The shallow areas of the Great Bend, Dabob Bay, and the Hamma Hamma, Quilcene, Duckabusch, Dosewallips, Tahuya and Skokomish River deltas feature relatively muddy habitats that lack holdfasts for kelp, such as rock and cobble areas, and thus do not support kelp growth. Such areas thus lack the essential feature of juvenile settlement sites for juvenile canary rockfish and bocaccio.

Benthic areas deeper than 98 ft (30 m) occur along the rim of nearly all of Hood Canal, and these areas feature complex bathymetry, with slopes and areas of high rugosity.

Bocaccio have been documented in Hood Canal (NMFS, 2013a). Yelloweye and canary rockfish have also been documented at several locations and have been caught in relatively low numbers for the past several years (WDFW, 2011).

As described in more detail in the biological report, there are several activities that occur in this basin that affect the essential features such that they may require special management considerations. Activities in Hood Canal include commercial and recreational fisheries, scientific research, nearshore development, non-indigenous species management, aquaculture, and pollution and runoff. An estimated 81 derelict nets in waters shallower than 100 ft (30.5 m) remain in this basin (Northwest Straits Initiative, 2011). The unique bathymetry and low water exchange have led to episodic periods of low dissolved oxygen (Newton et al., 2007),

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though the relative role of nutrient input from humans in exacerbating these periods of hypoxia is in doubt (Cope and Roberts, 2012). Dissolved oxygen levels have decreased to levels that cause behavioral changes and kill some rockfish (i.e., below 1.0 mg/L (1 ppm)) (Palsson et al., 2008). An estimated 34 percent of the shoreline in this area has been modified by human activities (Drake et al., 2010), and bulkhead/pier repairs and new docks/piers are regularly proposed in this basin. The non-indigenous tunicate (Ciona savignyi) has been document at 86 percent of sites surveyed in Hood Canal (Drake et al., 2010), and may impact benthic habitat function that include rearing and settlement habitat for rockfish.

Depicting Proposed Critical Habitat With Maps

As previously described, we first used available geographic data to identify the locations of benthic sites with or adjacent to complex bathymetry and shoreline sites with sand, rock and/or cobble compositions that also support kelp, as described in more detail in the draft Biological Report (NMFS, 2013a). Once we identified these sites, we aggregated sites located in close proximity through Geographic Information Systems methods described in NMFS (2013a), consistent with the regulatory guidance regarding designation of an inclusive area for habitats in close proximity (50 CFR 424.12(d)).

The specific areas we identified are large and we relied on recent agency rulemaking to refine the designation and provide a critical habitat map that clearly delineates where the essential features are found within the specific areas. The agency recently amended its critical habitat regulations to state that instead of designating critical habitat using lines on a map, we will show critical habitat on a map, with additional information discussed in the preamble of the rulemaking and in agency records (50 CFR 424.12(c)), rather than requiring long textual description in the Code of Federal Regulations (CFR). In adopting this amendment to our regulations, we stated in response to comments:

In instances where there are areas within a bigger area that do not contain the physical and biological features necessary for the conservation of the species, the Services would have the option of drawing the map to reflect only those parts of the area that do contain those features (77 FR 25611, May 1, 2012).

The maps we developed for the present designation conform to this new regulation. In addition, in agency records, and available on our Web site, we provide the GIS plot points used to create these maps, so interested persons may determine whether any place of interest is within critical habitat boundaries (http://www.nwr.noaa.gov).

Unoccupied Areas

Section 3(5)(A)(ii) of the ESA authorizes the designation of ``specific areas outside the geographical area occupied at the time the species is listed'' if these areas are essential for the conservation of the species. Regulations at 50 CFR 424.12(e) emphasize that the agency ``shall designate as critical habitat areas outside the geographical area presently occupied by a species only when a designation limited to its present range would be inadequate to ensure the conservation of the species.'' We conducted a review of the documented occurrences of each listed rockfish in the five biogeographic basins of Puget Sound (NMFS, 2013a). We found that each of the basins is currently occupied by listed rockfish and our biological review did not identify any unoccupied areas that are essential to conservation and thus have not identified any unoccupied areas as candidates for critical habitat designation (NMFS, 2013a). However, we will continue to investigate this issue and seek comment on this issue as part of this proposed rule.

Section 3(5)(C) of the ESA provides that ``except in those circumstances determined by the Secretary, critical habitat shall not include the entire geographical area which can be occupied by the threatened or endangered species.'' In this case we are proposing to designate all the specific areas that possess essential features that can be mapped (such as complex bathymetry in waters deeper than 30 meters, and nearshore areas such as sand, rock and/or cobble compositions that also support kelp) and as described above, we are only designating those portions of the specific areas that actually contain the essential features. We acknowledge that some listed rockfish have been documented to occur outside of the mapped areas that we propose to designate as critical habitat (NMFS, 2013a) and that larval listed rockfish could occur throughout the specific areas. Therefore, although each specific area contains habitat proposed for designation, we conclude that the proposed designation does not constitute ``the entire geographical area which can be occupied'' by the listed rockfish species.

Identifying Military Lands Ineligible for Designation

Section 4(a)(3) of the ESA precludes the Secretary from designating military lands as critical habitat if those lands are subject to an Integrated Natural Resource Management Plan (INRMP) under the Sikes Act that the Secretary certifies in writing benefits the listed species. We consulted with the DOD and determined that there are several installations with INRMPs which overlap with marine habitats occupied by listed rockfish: (1) Joint base Lewis-McCord: (2) Manchester Fuel Department, (3) Naval Air Station Whidbey Island, (4) Naval Station Everett, and (5) Naval Station Kitsap.

We found that Naval Station Everett does not overlap with essential features for listed rockfish in the nearshore and thus the area covered by the INRMP is not proposed for critical habitat designation. We identified habitat meeting the statutory definition of critical habitat at all of the other installations and reviewed the INRMPs, as well as other information available, regarding the management of these military lands. Our preliminary review indicates that each of these INRMPs addresses listed rockfish habitat, and all contain measures that provide benefits to the listed rockfish DPSs. Examples of the types of benefits include actions that improve shoreline conditions, control erosion and water quality, prevention of and prompt response to chemical and oil spills, and monitoring of listed species and their habitats. As a result, we conclude that the areas identified with INRMPs are not eligible for critical habitat designation (see appendix c of NMFS, 2013c).

Summary of Areas Meeting the Definition for Proposed Critical Habitat Designation

We have determined that approximately 643.7 sq mi (1,665.5 sq km) of nearshore habitat for juvenile canary rockfish and bocaccio, and 610.1 sq mi (1,580.95 sq km) of deepwater habitat for yelloweye rockfish, canary rockfish, and bocaccio meet the definition of proposed critical habitat (Table 1).

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Table 1--Physical and Biological Features and Management Considerations for Yelloweye Rockfish, Canary Rockfish and Bocaccio in Areas Meeting the

Definition of Critical Habitat

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DPS basin Nearshore sq Deepwater sq Physical or biological features Activities

mi. (for mi. (for adult

juvenile and juvenile

canary and yelloweye

bocaccio only) rockfish,

adult canary

rockfish, and

adult

bocaccio)

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San Juan/Strait of Juan de Fuca..... 352.2 298.98 Deepwater sites