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DEPARTMENT OF THE INTERIOR

Fish and Wildlife Service

CFR Citation: 50 CFR Part 17

RIN ID: RIN 1018-AI21

NOTICE: RULES

ACTION: Endangered and threatened species:

DOCUMENT ACTION: Final rule.

SUBJECT CATEGORY: Endangered and Threatened Wildlife and Plants; Final Designation of Critical Habitat for Astragalus pycnostachyus var. lanosissimus (Ventura Marsh milk-vetch)

DATES: This rule becomes effective June 21, 2004.

DOCUMENT SUMMARY: We, the U.S. Fish and Wildlife Service (Service), designate critical habitat pursuant to the Endangered Species Act of 1973, as amended (Act), for Astragalus pycnostachyus var. lanosissimus (Ventura marsh milkvetch). Approximately 420 acres (170 hectares) of land fall within the boundaries of the critical habitat designation. The designated critical habitat is located in Santa Barbara and Ventura Counties, California.

This critical habitat designation requires the Service to consult under section 7 of the Act with regard to actions carried out, funded, or authorized by a Federal agency. Section 4 of the Act requires us to consider economic and other relevant impacts when specifying any particular area as critical habitat. We solicited data and comments from the public on all aspects of this designation, including data on economic and other impacts of the designation.

SUMMARY: Critical habitat designations—; Ventura marsh milk-vetch,

SUPPLEMENTAL INFORMATION

Designation of critical habitat provides little additional protection to species. In 30 years of implementing the Endangered Species Act of 1973, as amended (Act), we have found that the designation of statutory critical habitat provides little additional protection to most listed species, while consuming significant amounts of available conservation resources. The present system for designating critical habitat has evolved since its original statutory prescription into a process that provides little real conservation benefit, is driven by litigation and the courts rather than biology, limits our ability to fully evaluate the science involved, consumes enormous agency resources, and imposes huge social and economic costs. We have determined that additional agency discretion would allow our focus to return to those actions that provide the greatest benefit to the species most in need of protection. Role of Critical Habitat in Actual Practice of Administering and Implementing the Act

While attention to and protection of habitat is paramount to successful conservation actions, we have consistently found that, in most circumstances, the designation of critical habitat is of little additional value for most listed species, yet it consumes large amounts of conservation resources. [Sidle (1987) stated, ``Because the ESA can protect species with and without critical habitat designation, critical habitat designation may be redundant to the other consultation requirements of section 7.'' Currently, only 445 species or 36 percent of the 1,244 listed species in the U.S. under the jurisdiction of the Service have designated critical habitat. We address the habitat needs of all 1,244 listed species through conservation mechanisms such as listing, section 7 consultations, the section 4 recovery planning process, section 9 protective prohibitions of unauthorized take, section 6 funding to the States, and the section 10 incidental take permit process. We conclude that it is these measures that may make the difference between extinction and survival for many species. Procedural and Resource Difficulties in Designating Critical Habitat

We have been inundated with lawsuits for our failure to designate critical habitat, and we face a growing number of lawsuits challenging critical habitat determinations once they are made. These lawsuits have subjected the Service to an everincreasing series of court orders and courtapproved settlement agreements, compliance with which now consumes nearly the entire listing program budget. This leaves us with little ability to prioritize our activities to direct scarce listing resources to the listing program actions with the most biologically urgent species conservation needs.

The consequence of the critical habitat litigation activity is that limited listing funds are used to defend active lawsuits, to respond to Notices of Intent to sue relative to critical habitat, and to comply with the growing number of adverse court orders. As a result, listing petition responses, our own proposals to list critically imperiled species, and final listing determinations on existing proposals are significantly delayed. Litigation over critical habitat issues for species already listed and receiving the Act's full protection has precluded or
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delayed many listing actions nationwide.

The accelerated schedules of court ordered designations have left us with almost no ability to provide for adequate public participation or to ensure a defectfree rulemaking process before making decisions on listing and critical habitat proposals due to the risks associated with noncompliance with judiciallyimposed deadlines. This, in turn, fosters a second round of litigation in which those who fear adverse impacts from critical habitat designations challenge those designations. The cycle of litigation appears endless, is very expensive, and in the final analysis provides relatively little additional protection to listed species.

The costs resulting from the designation include legal costs, the cost of preparation and publication of the designation, the analysis of the economic effects and the cost of requesting and responding to public comment, and in some cases the costs of compliance with National Environmental Policy Act, all are part of the cost of critical habitat designation. None of these costs result in any benefit to the species that is not already afforded by the protections of the Act enumerated earlier, and they directly reduce the funds available for direct and tangible conservation actions.

Background

Astragalus pycnostachyus var. lanosissimus (Ventura marsh milk vetch) is an herbaceous perennial in the Pea family (Fabaceae). Little is known of the habitat requirements of this subspecies. The only known population of Astragalus pycnostachyus var. lanosissimus occurs in a sparsely vegetated low area, at an elevation of about 30 feet (ft) (10 meters (m)), on the North Shore at Mandalay site, which was previously used for disposal of petroleum waste products (Impact Sciences, Inc. 1997). Based on existing information from historical collections, the best description we have of its habitat is from Wilken and Wardlaw (2001), who concluded that the subspecies occurs in lowelevation coastal duneswale areas, where freshwater levels (in the form of saturated soils or groundwater) are high enough to reach the roots of the plants. Sometimes, high groundwater is shown by the presence of water in sloughs or coastal creeks, but more typically evidence for freshwater availability is seen in the presence of native freshwater dependent plants such as Salix spp. (willows), Typha spp. (cattails), Baccharis salicifolia, and others. The soils associated with Astragalus pycnostachyus var. lanosissimus are welldrained, yet contain a mix of sand and clay. Because of the freshwater influence, the soils do not exhibit a white crust that would indicate saline or alkaline conditions. For additional information on the biology, habitat requirements, and historical collection information of Astragalus pycnostachyus var. lanosissimus, please refer to the proposed critical habitat rule (October 9, 2002; 67 FR 62926).

Due to the combination of poor seedling and young plant survivorship and low seed production, the single naturally occurring population of Astragalus pycnostachyus var. lanosissimus has continued to decline since its rediscovery in 1997 and through the 2001 season (Impacts Sciences 1997, 1998; Wilken and Wardlaw 2001; Dieter Wilken, Santa Barbara Botanic Garden, pers. comm. 2002). The population is able to persist due to having established a seedbank (not all seeds produced in one year will germinate the following year). The hard seed coat may require scarification (scraping or small cuts) that cannot happen within one season, so the seed may survive for one year or more in the soil until the coat can break down or is broken by some mechanical means (Michael Wall, Rancho Santa Ana Botanic Garden, pers. comm. 2000). Also, Wilken and Wardlaw (2001) found that the plants may not become reproductive until more than 18 to 30 months following germination. The implication for Astragalus pycnostachyus var. lanosissimus is that low seed production and, thus, a seedbank deficit, combined with low seedling survival and the mortality of some adult plants, may contribute to the population's decline unless other threats to the plants (e.g., reduced survivorship of seedlings and adult plants due to snail herbivory) can be addressed.

The single natural population of Astragalus pycnostachyus var. lanosissimus near the city of Oxnard is in a degraded backdune community. From 1955 to 1981, the land on which it occurs (hereafter, North Shore at Mandalay) was used as a disposal site for oilfield wastes (Impact Sciences, Inc. 1998). A development proposal for the site includes remediation of soils contaminated with hydrocarbons, followed by construction of 300 homes and a 6acre (ac) (2hectare (ha)) lake on 91 ac (37 ha) of land. The proposed soil remediation would involve excavation and stockpiling of the soils, followed by soil treatment and redistribution of the soils over the site (Impact Sciences, Inc. 1998). In 1998, the City of Oxnard published a Final Environmental Impact Report (FEIR), pursuant to the California Environmental Quality Act, for development of this site (Impact Sciences, Inc. 1998). In a final step, the project was approved by the California Coastal Commission (2002).

Astragalus pycnostachyus var. lanosissimus is Statelisted as endangered under the California Endangered Species Act (CESA). CESA prohibits the take of any species listed under CESA, including plants. Section 2081 of CESA allows private landowners to obtain a permit for the incidental take of listed species, including plants, which must include mitigation measures commensurate with the level of take proposed, adequate funding for any mitigation, and assurance that the proposed take would not jeopardize the continued existence of the species. The California Department of Fish and Game (CDFG) concluded that the North Shore at Mandalay project would not have direct effects on the subspecies and that therefore a permit was not required; however, the project would have indirect effects on the plant. The landowner entered into a memorandum of understanding with CDFG in order to provide some conservation benefit to the subspecies. The proposed conservation measures for Astragalus pycnostachyus var. lanosissimus on the site would be to establish a 1.65ac (0.67ha) ``milkvetch preservation area'' encompassing the entire natural population (California Coastal Commission 2002). The milkvetch preservation area would be buffered from soil remediation activities by a 100foot (ft) (30 meters (m)) limit line within which no excavation would occur. The milkvetch preservation area would ultimately be inside a 23.8ac (9.6 ha) resource protection area (RPA).

According to a comprehensive review of rare plant preserve design compiled by the Conservation Biology Institute (2000), areas to protect a rare plant species should be at a minimum 300 ft (91 m) wide but a larger area is preferred, because effects (e.g., fuel management, loss of pollinators, introduction of competing exotic plants) are not absorbed by smaller areas, and the effects are likely to extend well into adjacent preserved areas.

The efforts to conserve Astragalus pycnostachyus var. lanosissimus on the North Shore site are much improved over earlier concepts, and we appreciate the efforts of the landowner. However, the Service believes, based on the published literature, that the
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configuration of the preserve is not suitable for buffering the plants from adjacent land uses. Although the RPA is 23.8 acres and one contiguous area, the Astragalus pycnostachyus var. lanosissimus population is near the edge of the RPA, where it would be adjacent to residential development, and the majority of the natural vegetation in the vicinity to the Astragalus pycnostachyus var. lanosissimus population would be removed. Although no measurements of buffer size were available, and maps we received were not to scale and not overly clear, it appears that the majority of the RPA is to the south of the Astragalus pycnostachyus var. lanosissimus preserve and thus does not provide sufficient buffering (i.e., at least 300 feet) from adjacent residential development and roads. Furthermore, at least 50 feet of the RPA, including the buffer area surrounding the milkvetch preserve, will be landscaped, and not natural vegetation, thus further affecting hydrology, pollinators, and potentially introducing nonnative species to the preserve. Also, the RPA was not intended to provide protection solely for the Astragalus pycnostachyus var. lanosissimus population, and as such, much of the 23.8 acre area (approximately 30 percent by our estimate) encompasses habitat which would not support Astragalus pycnostachyus var. lanosissimus (e.g., willow riparian habitat along the Edison Canal). Lastly, the soil remediation the developer has agreed to provide, which will take place to within 100 feet of the Astragalus pycnostachyus var. lanosissimus preserve, will alter the local hydrology upon which the plant relies. We are uncertain if the local hydrology can or will be restored following soil remediation. The RPA is likely to become dominated by nonnative plants, and the replacement soil may contain seeds of plant species which will invade the Astragalus pycnostachyus var. lanosissimus preserve. We have not seen a restoration plan that establishes that the area would be replanted with native plants.

We were not involved in the agreements between the developer and local and State officials because our regulatory authority does not extend to listed plants on private land unless there is a Federal nexus, such as a Federal permit or funding. No nexus was involved at this site, and our role was strictly advisory. However, if a landowner takes a Statelisted species in violation of CESA, and the species is also federally listed, the take would also violate section 9 of the Act.

A sooty fungus was found on the leaves of Astragalus pycnostachyus var. lanosissimus in late summer 1997, as leaves began to wither or senesce (die) and the plants entered a period of dormancy (Impact Sciences, Inc. 1997). The effects of the fungus on the population are not known, but it is possible that the fungus attacks senescing leaves in great number only at the end of the growing season. The plants appeared robust when in flower in June 1997 and matured seed by October 1997, at which point the fungus was noted. The plants were regrowing in March 1998, after a period of dormancy, without obvious signs of the fungus (Diane Steeck, Service, in litt. 1998). Wilken and Wardlaw's 2001 study did not detect any signs of pathogens on mature plants that appeared to be in poor health; however, two mature plants had infestations of aphids (Family: Aphididae) that were being tended by nonnative Argentine ants (Linepithema humile). Wilken (2002) reported finding cucumber mosaic virus, which is transmitted by aphids, in the Astragalus pycnostachyus var. lanosissimus population.

In 1997, the seeds of Astragalus pycnostachyus var. lanosissimus were heavily infested with seed beetles (Family Bruchidae: Coleoptera). In a seed collection done for conservation purposes in 1997, we found that most fruits partially developed at least four seeds; however, seed predation reduced the average number of undamaged seeds to only 1.8 per fruit (D. Steeck, in litt. 1998). Wilken and Wardlaw (2001) reported similar findings in 2000. Apparently heavy seed predation by seed beetles and weevils has been reported among other members of the genus Astragalus (Platt et al. 1974; Lesica 1995). Wilken and Wardlaw (2001) estimate that seed predation by these insects may reduce seed viability by 30 percent in a given year.

Because of its small population size, the only known natural population is also threatened by competition with nonnative plant species. Cortaderia selloana (pampas grass), Carpobrotus sp., and Bromus madritensis ssp. rubens are invasive nonnative plant species that occur at the site (Impact Sciences, Inc. 1997). Carpobrotus sp., in particular, is a competitive, succulent species with the potential to cover vast areas in dense clonal mats and may harbor nonnative snails. Bromus madritensis ssp. rubens grew in high densities around some mature individuals of Astragalus pycnostachyus var. lanosissimus in 1998, and seedlings were germinating among patches of Carpobrotus sp. and Bromus spp. in 1998 (D. Steeck, in litt. 1998). Seedling survival rates for Astragalus pycnostachyus var. lanosissimus in these areas have not been determined.

Efforts to conserve Astragalus pycnostachyus var. lanosissimus have been initiated by the landowner (North Shore at Mandalay LLC), a task force of scientists from the University of California, the Santa Barbara Botanic Garden, California Department of Fish and Game (CDFG), the Service, and the Rancho Santa Ana Botanic Garden (RSABG). Consulting biologists for the landowner and proponents of the development have successfully grown plants in a remote greenhouse facility. Several plants were excavated from the natural population and potted prior to State and Federal listing, and other plants were started from seed gathered from the natural population. In addition, Astragalus pycnostachyus var. lanosissimus seed from the site was placed in a seed storage collection and a seed bulking project at RSABG. RSABG has been successful in germinating Astragalus pycnostachyus var. lanosissimus seed and growing the plants in containers (Wilken and Wardlaw 2001).

Research populations have been introduced in two locations within the historical range of Astragalus pycnostachyus var. lanosissimus: One at Mandalay State Beach, across the street from the extant population, and the other at McGrath State Beach. A further research population is present outside of the known range of the subspecies, at Carpinteria Marsh in Santa Barbara County. In addition, approximately 250 individuals were planted and are being irrigated at the Coal Oil Point Reserve, also in Santa Barbara County. Seed has been introduced at 10 separate dune locations at the Reserve (Cristina Sandoval, Coal Oil Point Reserve Director, pers. comm. 2002). The data gathered from these efforts will be used in establishing selfsustaining populations of Astragalus pycnostachyus var. lanosissimus. The plants at Coal Oil Point have been established primarily for the purpose of generating seeds (``bulking up seed'') to increase the seedbank in storage, and not necessarily for generating data on establishing new populations.

In 1997, the population of Astragalus pycnostachyus var. lanosissimus at the North Shore at Mandalay consisted of about 374 plants, of which 260 were small plants thought to have germinated in the last year, and 114 were ``adult'' plants. Fewer than 65 of the adult plants produced fruit in 1997 (Impact Sciences, Inc. 1997). In 1998, 192 plants
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were counted during surveys of the population. Service biologists placed cages around a sample of plants in 1999 to protect them from severe herbivory by small mammals, most likely brush rabbits. Despite this protection, only 30 to 40 plants produced flowers in 1999, which was believed to be less than half of those blooming in 1998 (D. Steeck, in litt. 1998). It is not known why flowering was so low in 1999.

The total number of adult plants in the natural population declined between 1997 and 2000 (Wilken and Wardlaw 2001). Although 46 of 80 seedlings that germinated in the 2000 growing season were still present in October 2000, the total number of surviving adult plants in 2000 was estimated at 39. Many are believed to have succumbed to herbivory from snails and brush rabbits (Wilken and Wardlaw 2001). Following efforts to control snails in 2000 (i.e., poisoning, hand removal, clearing of iceplant, fencing), and perhaps more favorable growing conditions in the winter of 200001, more than 1,000 seedlings were observed (D. Wilken, pers. comm. 2002). Of these, more than 300 survived until October 2001, when they became dormant, indicating an increase in the number of plants in the natural population.

A census of the natural population on September 15, 2002, revealed that 37 reproductive plants had survived from the seedlings present in 2001, and 38 reproductive plants remained from seedlings established in 2000 or earlier, for a total of 75 reproductive plants in 2002. Approximately 350 plants had germinated in 2002. The total number of surviving plants was not determined. Some mortality is expected among all age classes in the following years depending upon rainfall and other factors.

As of June 2003, the status of the research populations at McGrath State Beach, Carpinteria Marsh Reserve, and Mandalay State Beach (CDFG, in litt. 2003a), was as follows (the Coal Oil Point population is excluded because it is not part of the research, as described earlier): (1) McGrath State Beach. In April 2002, 167 plants were planted at McGrath State Beach. As of February 2003, 88 percent (147) of the plants had survived, and most were still alive in June 2003. Three sites at McGrath had produced a total of 236 seedlings.
(2) Carpinteria Marsh Reserve. In April 2002, 155 plants were planted. As of February 2003, 44 percent (68) of the plants survived. Only 20 seedlings had been produced by plants at one of the planting sites as of June 2003.
(3) Mandalay State Beach. On February 23, 2003, 57 Astragalus pycnostachyus var. lanosissimus plants in onegallon containers were planted. All plants had survived as of June 2003.

The most recent census data we have includes information from the experimental populations at McGrath State Beach and Carpinteria Marsh Reserve gathered over the summer of 2003 (CDFG, in litt. 2003b). Of the five experimental plots at McGrath State Beach, the plants at two plots had died out, and plants at the remaining three plots were vigorous, with a total of 79 plants surviving out of 167 that were alive during the previous census. Of the five plots started at Carpinteria Marsh, only two still supported plants, with a total of 30 plants surviving out of 155 planted (19 percent). At McGrath State Beach, the losses and successes were attributed to moisture availability (i.e., plants died where the roots were not able to reach freshwater, but did well where freshwater was available). At Carpinteria, the losses were attributed to high salinity and gopher foraging (CDFG, in litt. 2003b). Previous Federal Action

On October 9, 2002, we published the proposed critical habitat designation for Astragalus pycnostachyus var. lanosissimus (67 FR 62926) in compliance with the August 2, 2001, stipulated settlement agreement and order. In that proposed rule, we included a detailed summary of the previous Federal actions completed prior to publication of the proposal. We reopened the public comment period to seek comments on the draft economic analysis on March 20, 2003 (68 FR 13663). Due to funding shortfalls for critical habitat work in FY 2003, we were unable to complete the final rule by the stipulated date of October 1, 2003. On September 29, 2003, the court granted the Service's motion to modify the August 2, 2001 Stipulated Settlement Agreement and Order and extended the date for publication of the final rule to May 15, 2004 (Center for Biological Diversity v. United States Fish and Wildlife Service, C 010352 SI (N.D. Cal.)).

Summary of Comments and Recommendations

We solicited comments from appropriate Federal, State, and local agencies, the scientific community, and other interested parties. We invited public comment through notification sent to local newspapers in Ventura and Santa Barbara Counties. Additionally, we invited public comment on the proposed critical habitat designation on October 9, 2002 (67 FR 62926), and again on March 20, 2003, when we published the draft economic analysis and reopened the comment period on the critical habitat proposal (68 FR 13663).

We received three comment letters on the proposed critical habitat designation. All three were reviewed for substantive issues and new information regarding critical habitat. One of the commentors was against the designation on the single piece of privatelyowned land included in the proposal. The other two commentors were neutral but provided some new information and clarification on the subspecies' natural history and status.

Peer Review

In accordance with our policy published on July 1, 1994 (59 FR 34270), we solicited the expert opinions of six independent specialists regarding this rule. The purpose of such review is to ensure listing decisions are based on scientifically sound data, assumptions, and analyses. We sent these peer reviewers copies of the proposed rule immediately following publication in the Federal Register. Two of the peer reviewers responded, providing comments that we have incorporated into the final rule.
Responses to Comments
(1) Comment: One comment stated that a critical habitat designation could add nothing to the multiple protections already in place for Astragalus pycnostachyus var. lanosissimus at the North Shore site, which supports the only natural population of the subspecies and warrants exclusion under section 4(b)(2) of the Act. The comment further states that similar exemptions have been granted to military installations.

Our Response: The comment's rationale for exclusion of the North Shore at Mandalay site from the critical habitat designation, citing that it is similar to exclusions we have granted under section 4(b)(2) for military installations, is not accurate. Where we have excluded a military installation from a critical habitat designation pursuant to section 4(b)(2), we determined that the benefits of excluding lands under the jurisdiction of the U.S. military outweigh the benefits of including them as critical habitat, and would not result in the extinction of the species.

As stated previously, this site supports the only naturally occurring population. While there are other locations where the subspecies has been planted, these remain under study and
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it is not clear at this time how or whether they will contribute to the survival of the species. This site is the only seed source, has provided all of the initial propagules for establishing research populations of the species at other sites, and continues to be the source of genetic variability for future propagation. The research populations at McGrath State Beach, Carpinteria Marsh, and Mandalay State Beach are not intended to become new populations for the recovery of the species, but were established to generate data on the species' needs when such introductions for recovery begin. Their persistence is uncertain, and we have observed some failures (see Background section). Consequently, the population of Astragalus pycnostachyus var. lanosissimus on the North Shore at Mandalay site is currently the only one of which we can be relatively certain that the plants will persist. If this population is extirpated, and the research populations ultimately fail, all of the remaining individuals of Astragalus pycnostachyus var. lanosissimus will exist as seeds in collections or propagated in greenhouses. The designation of the North Shore at Mandalay site as critical habitat recognizes that this population is essential to the species' conservation. This southernmost unit is geographically separated from other critical habitat within its historical range. This will reduce the likelihood of all populations being destroyed by one naturally occurring catastrophic event. (2) Comment: One comment stated that the proposed rule was based upon the wrong legal standard for determining critical habitat. Critical habitat is to be narrowly drawn.

Our Response: The critical habitat units as proposed meet the definition of critical habitat in the Act. The occupied areas designated are essential to the conservation of the species and may require special management. In addition, we have made the finding that the unoccupied areas are essential to the conservation of the species. The North Shore at Mandalay site, for which the comment seeks exclusion, supports the only naturallyoccurring population of Astragalus pycnostachyus var. lanosissimus in existence. The plants on this site are the source of all genetic variation available to the subspecies, and its survival is dependent upon a diverse genetic base that can respond to environmental fluctuations and disease.

The designation includes the site of the one existing population and sufficient area to establish new populations necessary for survival and recovery of Astragalus pycnostachyus var. lanosissimus. (3) Comment: One comment stated that the proposed rule was not specific enough to identify properties or whether they contained primary constituent elements, and, therefore, did not allow for comments on specific parcels.

Our Response: We disagree that the proposed rule did not adequately identify locations of critical habitat. The proposed rule provided maps and Universal Transverse Mercator (UTM) coordinates of the proposed critical habitat units. The UTM coordinates are typically used in Global Positioning System (GPS) data and are at a scale of 3.3 ft (1 m), which is of sufficient detail for locating the extent and configuration of the units, and should allow most property owners to determine if their property is within the boundaries of critical habitat. Detailed maps of the designation are available on our web site, and property owners may call our office for further assistance if necessary.
(4) Comment: One comment asserted that the proposed rule failed to include an economic analysis as required under the Act.

Our Response: We conducted an economic analysis as required by the Act. The draft economic analysis was made available for public review on March 20, 2003 (68 FR 13663), and we accepted public comments on it from March 20, 2003, until April 21, 2003. We did not receive any comments on the draft economic analysis. The final economic analysis is part of the administrative record for this rulemaking.
(5) Comment: One comment stated that the Service cannot designate critical habitat for the milkvetch until it first complies with the requirements of the National Environmental Policy Act. The comment cites Catron County Board of Commissioners v. U.S. Fish and Wildlife Service (1996) to support its contention.

Our Response: As we indicated in our proposed rule, we have determined that an Environmental Assessment or an Environmental Impact Statement, as defined under the authority of the National Environmental Policy Act of 1969, need not be prepared in connection with regulations adopted pursuant to section 4(a) of the Act. A notice outlining our reason for this determination was published in the Federal Register on October 25, 1983 (48 FR 49244). This position has been upheld by the Ninth Circuit Court of Appeals in Douglas County v. Babbitt, 48 F.3d 1495 (9th Cir. 1995).

Also, the public involvement and notification requirements under both the Endangered Species Act and the Administrative Procedure Act provide ample opportunity for public involvement in the process, similar to the opportunities for public involvement and economic analysis of effects that would be provided in the NEPA process. (6) Comment: One comment recommended that we avoid making conclusions about the success of efforts to establish Astragalus pycnostachyus var. lanosissimus at Carpinteria Marsh until the population proves to be selfsustaining, which could take 3 to 4 years.

Our Response: We recognize that the efforts to establish Astragalus pycnostachyus var. lanosissimus at Carpinteria Marsh were preliminary at the time the proposed rule was published. More recent data has been incorporated into this final rule that shows limited success with the experimental population due to physical (e.g., salinity) and biological factors (e.g., competition from nonnative plants).
(7) Comment: Two comments stated that a research population had not been initiated at Mandalay State Beach, despite our contention to that effect in the proposal.

Our Response: At the time the critical habitat proposal was published, the comments are correct that the research population had not yet been initiated; however, the CDFG has now implemented an experimental population at Mandalay State Beach in addition to those at McGrath State Beach, Carpinteria Marsh, and Coal Oil Point. The CDFG planted 57 1gallon specimens of Astragalus pycnostachyus var. lanosissimus at Mandalay State Beach in February 2003. The status of this outplanting is described in the background section of this final rule.
(8) Comment: One comment stated that the plants at Coal Oil Point are an inground nursery and not intended to become a selfsustaining population.

Our Response: The intent of the Coal Oil Point experiment was not clear to us at the time the critical habitat proposal was published. From discussions with the science task force, we now recognize that the population is meant to provide propagules (cuttings or seed) for other populations.
(9) Comment: One comment expressed concern that critical habitat designations on land within the University of California's Natural Reserve System could cause regulatory delays for federally funded research projects on these lands.

Our Response: We did not receive any comments from representatives of the University of California's Natural
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Reserve System (Reserve) objecting to the proposed designation. We understand that one of the purposes of the Reserve system is conservation of plants and animals, such as Astragalus pycnostachyus var. lanosissimus, so the critical habitat designation is consistent with that goal. Federal funding of research projects at Carpinteria Marsh could trigger consultation under section 7 of the Act if the research project would adversely affect designated critical habitat for Astragalus pycnostachyus var. lanosissimus. However, we have concluded that these consultations would not cause undue delays in initiating research projects. Compliance with section 7 could range from simple concurrence, which is usually completed within 30 days, to formal consultation, which could take 135 days or less. Formal consultation on critical habitat would only be necessary if the action would have an adverse effect on the critical habitat. We anticipate that most research within the Reserve would be designed not to adversely affect the primary constituent elements of the critical habitat of Astragalus pycnostachyus var. lanosissimus.
(10) Comment: Two comments noted that the Wilken and Wardlaw (2001) report was not intended to represent a comprehensive analysis of all potential sites for introduction of Astragalus pycnostachyus var. lanosissimus, and that areas to the south of Ventura County within the historical range of Astragalus pycnostachyus var. lanosissimus should have been included.

Our Response: While Wilken and Wardlaw (2001) was not intended to be an exhaustive analysis of all potential sites for introduction of Astragalus pycnostachyus var. lanosissimus at the time critical habitat was proposed, it was, and remains, the best scientific information available to support the designations. Our designation is to be based on the best available scientific data. We do not have similar data for all other potential introduction sites, so we did not attempt to include areas for which we did not have data indicating that the location was essential to the conservation of Astragalus pycnostachyus var. lanosissimus. Based on museum records, we know that Astragalus pycnostachyus var. lanosissimus was once known from Los Angeles and Orange Counties. In preparation of the proposed rule, we interviewed biologists familiar with the coastal wetlands in Los Angeles and Orange Counties, and specifically, historical locations at the Ballona Wetlands and Bolsa Chica. The information they provided led us to conclude that opportunities for introductions of Astragalus pycnostachyus var. lanosissimus were incompatible with current conditions and future restoration efforts. We agree that the areas to the south within the historical range of Astragalus pycnostachyus var. lanosissimus are worth exploring for recovery efforts; however, the information we had at the time critical habitat units were identified did not support inclusion of sites in Los Angeles and Orange Counties. (11) Comment: One comment asked why land at the Navy Base Ventura County was excluded from the designation when Wilken and Wardlaw (2001) included it, and why the Ormond Beach area was not included.

Our Response: Based upon Wilken and Wardlaw's (2001) research, we considered a site at the Navy Base Ventura County, Point Mugu for inclusion as critical habitat. Point Mugu Naval Air Weapons Station, in southern Ventura County, may have suitable habitat (Wilken and Wardlaw 2001). A. pycnostachyus var. lanosissimus was not found during cursory surveys of the base, nor has this taxon ever been collected there despite habitat evaluations and vegetation sampling by the Navy for the past 15 years (Navy Base Ventura County 2002). Further, our criteria for including sites required more than just suitable habitat. We designated areas with primary constituent elements, where the existing population occurs and those where research populations have been established. Nevertheless, we intend to continue to work with the Navy to develop an introduction and conservation plan for Astragalus pycnostachyus var. lanosissimus at the Navy Base Ventura.

For the Ormond Beach area, we did not have sufficient information at the time critical habitat for Astragalus pycnostachyus var. lanosissimus was proposed to warrant its inclusion. As stated above, we did not attempt to include areas for which we did not have data indicating that the location was essential to the conservation of Astragalus pycnostachyus var. lanosissimus.
(12) Comment: One comment stated that gophers (Thomomys bottae) are a continuing threat to the plants at some of the sites where Astragalus pycnostachyus var. lanosissimus has been introduced, but not at the native population site where buried oil sludge may deter gophers. Further, the comment notes that the nonnative Melilotus indicus is a competitor for the likely pollinator of Astragalus pycnostachyus var. lanosissimus where the two plants occur together.

Our Response: We recognize that current and new threats to Astragalus pycnostachyus var. lanosissimus exist; however, this new information does not affect the critical habitat designation at this time. We will consider this information and incorporate this data into the recovery efforts currently under way for Astragalus pycnostachyus var. lanosissimus.

Summary of Changes From Proposed Rule

Based upon our review of the public comments, peer review responses, and the economic analysis, we reevaluated our critical habitat and made changes as necessary. Although some pertinent information on the background of the subspecies was provided by reviewers, we did not receive new information that would warrant changes to the boundaries of critical habitat as proposed. We did incorporate changes to the information on Astragalus pycnostachyus var. lanosissimus which include the following:
(1) We updated the status of the natural and research populations. These changes are generally the result of more recent counts of the numbers of individual plants. Where available, we included new data on factors affecting the plants' growth and development.
(2) Information on participants in the science task force overseeing current experiments with Astragalus pycnostachyus var. lanosissimus has been revised.
(3) We updated information on experiments being conducted at Mandalay State Beach, which we erroneously described in the proposed rule.
(4) We updated the description of a proposed development on the North Shore at Mandalay site that supports the only natural population of Astragalus pycnostachyus var. lanosissimus.
(5) We provided a summary of the Economic Analysis that has been adopted as final for this rule.

Critical Habitat

Critical habitat is defined in section 3 of the Act as(i) the specific areas within the geographic area occupied by a species, at the time it is listed in accordance with the Act, on which are found those physical or biological features (I) essential to the conservation of the species and (II) that may require special management considerations or protection; and (ii) specific areas outside the geographic area occupied by a species at the time it is listed, upon a determination that such areas are
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essential for the conservation of the species. ``Conservation'' means the use of all methods and procedures that are necessary to bring an endangered or a threatened species to the point at which listing under the Act is no longer necessary.

The designation of critical habitat does not affect land ownership or establish a refuge, wilderness, reserve, preserve, or other conservation area. It does not allow government or public access to private lands. Under section 7 of the Act, Federal agencies must consult with us on activities they undertake, fund, or permit that may affect critical habitat and lead to its destruction or adverse modification. However, the Act prohibits unauthorized take of listed species and requires consultation for activities that may affect them, including habitat alterations, regardless of whether critical habitat has been designated.

To be included in a critical habitat designation, habitat must be either a specific area within the geographic area occupied by the species on which are found those physical or biological features essential to the conservation of the species (primary constituent elements, as defined at 50 CFR 424.12(b)) and which may require special management considerations or protections, or be specific areas outside of the geographic area occupied by the species which are determined to be essential to the conservation of the species. Section 3(5)(C) of the Act states that critical habitat shall not include the entire geographical area which can be occupied by a species unless the Secretary determines that circumstances require such designation. Our regulations (50 CFR 424.12(e)) also state that, ``The Secretary shall designate as critical habitat areas outside the geographic area presently occupied by the species only when a designation limited to its present range would be inadequate to ensure the conservation of the species.'' Accordingly, when the best available scientific and commercial data do not demonstrate that the conservation needs of the species require designation of critical habitat outside of occupied areas, we will not designate critical habitat in areas outside the geographic area occupied by the species. Within the geographic area occupied by Astragalus pycnostachyus var. lanosissimus, we will designate only areas currently known to be essential. Essential areas should already have the features and habitat characteristics that are necessary to sustain Astragalus pycnostachyus var. lanosissimus. We will not speculate about what areas might be found to be essential if better information became available, or what areas may become essential over time. We have also excluded from this proposal, areas of suitable habitat where they might potentially occur, and some localities where they historically occurred.

To be included in a critical habitat designation, the Service must also find that habitat may require special management considerations or protections. As discussed in more detail below, with respect to the individual units, the Service finds that the three units designated as critical habitat for Astragalus pycnostachyus var. lanosissimus may require special management considerations or protections due to threats to the species and/or its habitat. Such special management considerations or protections may include management of invasive, non native plants; reducing or eliminating herbivory by snails and rabbits; and reducing or eliminating the indirect effects of development, as well as protecting the composition of native plant and animal communities within critical habitat units.

Section 4(b)(2) of the Act requires that we take into consideration the economics, and any other relevant impact, of specifying any particular area as critical habitat. We may exclude areas from critical habitat designation when the benefits of exclusion outweigh the benefits of including the areas within critical habitat, provided the exclusion will not result in extinction of the species.

Our Policy on Information Standards under the Endangered Species Act, published in the Federal Register on July 1, 1994 (59 FR 34271), provides criteria, establishes procedures, and provides guidance to ensure that our decisions represent the best scientific and commercial data available. It requires our biologists, to the extent consistent with the Act and with the use of the best scientific and commercial data available, to use primary and original sources of information as the basis for recommendations to designate critical habitat. When determining which areas are critical habitats, a primary source of information should be the listing package for the species. Additional information may be obtained from a recovery plan, articles in peer reviewed journals, conservation plans developed by states and counties, scientific status surveys and studies, biological assessments, or other unpublished materials.

Section 4 of the Act requires that we designate critical habitat based on what we know at the time of designation. Habitat is often dynamic, and species may move from one area to another over time. Furthermore, we recognize that designation of critical habitat may not include all of the habitat areas that may eventually be determined to be necessary for the conservation of the species. For these reasons, critical habitat designations do not signal that habitat outside the designation is unimportant or may not be required for recovery.

Areas that support populations, but are outside the critical habitat designation, will continue to be subject to conservation actions implemented under section 7(a)(1) of the Act and to the regulatory protections afforded by the section 7(a)(2) jeopardy standard and the section 9(a)(2) prohibitions, as determined on the basis of the best available information at the time of the action. Federally funded or permitted projects affecting listed species outside their designated critical habitat areas may still result in jeopardy findings in some cases. Similarly, critical habitat designations made on the basis of the best available information at the time of designation will not control the direction and substance of future recovery plans, HCPs, or other species conservation planning efforts if new information available to these planning efforts calls for a different outcome.

Methods

As required by section 4(b)(2) of the Act and regulations at 50 CFR 424.12, we used the best scientific information available to determine areas that contain the physical and biological features that are essential for the conservation of Astragalus pycnostachyus var. lanosissimus. This information included data from the final rule listing the species as endangered (66 FR 27901), the California Natural Diversity Data Base (CNDDB) (CDFG 2002), recent biological surveys, reports and aerial photos, additional information provided by interested parties, and discussions with botanical experts. We also conducted site visits to locations managed by Federal and State agencies, including NBVC, McGrath State Beach, and Carpinteria Marsh.

Much of our understanding of the habitat requirements of Astragalus pycnostachyus var. lanosissimus is derived from Wilken and Wardlaw (2001), which represents the most complete information to date regarding the biology and habitat of the species. Of particular relevance to this critical habitat determination, Wilken and Wardlaw (2001) provide descriptions of the habitat of Astragalus pycnostachyus var. lanosissimus' closest relative, Astragalus pycnostachyus var. [[Page 29088]]
pycnostachyus (northern marsh milkvetch). Wilken and Wardlaw (2001) collected data on habitat characteristics at sites occupied by Astragalus pycnostachyus var. pycnostachyus and compared these with the characteristics at the extant population of Astragalus pycnostachyus var. lanosissimus. Once common habitat characteristics had been established, Wilken and Wardlaw used these to evaluate areas for their suitability for establishing new populations of Astragalus pycnostachyus var. lanosissimus. The factors evaluated included: degree of disturbance; vegetative cover (percent and type); associated species; proximity to subterranean water table; and potential threats. Wilken and Wardlaw (2001) also analyzed soil from the site where Astragalus pycnostachyus var. lanosissimus currently exists for physical and chemical properties important for general plant growth, such as texture, pH, salinity, nutrients, and micronutrients.

Determining what constitutes habitat for Astragalus pycnostachyus var. lanosissimus is difficult because there is only one extant population, and the site has been altered by soil dumping and oil waste disposal. Also, the historical collections did not fully document the habitat where the plants were found. Therefore, both Wilken and Wardlaw (2001) and the Service's data (D. Steeck, in litt. 1998) were used to characterize the habitat of Astragalus pycnostachyus var. lanosissimus and to determine the primary constituent elements. Some differences between the two subspecies of Astragalus pycnostachyus are apparent, especially in regard to associated plant species and general habitat type. For example, some individuals of Astragalus pycnostachyus var. pycnostachyus are found in habitats similar to Astragalus pycnostachyus var. lanosissimus, but individuals are also found some distance from wet habitats in relatively dry or gravelly soils. Such differences may be a function of a small data set for Astragalus pycnostachyus var. lanosissimus due to its single population, uncertainty surrounding its presence on the extant site (i.e., whether it is a natural occurrence or was introduced through soil dumping), and differences in habitat needs of the two subspecies. We have paid particular attention to information from Wilken and Wardlaw (2001) because they analyzed conditions at the only known site where Astragalus pycnostachyus var. lanosissimus currently occurs.

Primary Constituent Elements

In accordance with section 3(5)(A)(i) of the Act and regulations at 50 CFR 424.12, in determining which areas to designate as critical habitat, we consider those physical and biological features (primary constituent elements) that are essential to the conservation of the species and that may require special management considerations or protection. These 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 reproduction, germination, or seed dispersal; and habitats that are protected from disturbance or are representative of the known historical, geographical, and ecological distributions of a species.

Much of what is known about the specific physical and biological requirements of Astragalus pycnostachyus var. lanosissimus is described in the Background section of this final rule. The designated critical habitat is designed to provide sufficient habitat to maintain self sustaining populations of Astragalus pycnostachyus var. lanosissimus throughout its range, and to provide those components essential for the conservation of the subspecies. These habitat components provide for: (1) Individual and population growth, including sites for germination, pollination, reproduction, pollen and seed dispersal, and seed dormancy; and (2) areas that provide basic requirements for growth, such as water, light, and minerals.

We have concluded that the longterm success of the conservation of Astragalus pycnostachyus var. lanosissimus is dependent upon the protection of the existing population site and sites where introductions can be conducted, as well as the maintenance of ecological functions within these sites, including connectivity between colonies (i.e., groups of plants within sites) within close geographic proximity to facilitate pollinator activity and seed dispersal. The areas we are designating as critical habitat provide some or all of the habitat components essential for the conservation of Astragalus pycnostachyus var. lanosissimus. Based on the best available information from the only extant site of the species, the primary constituent elements of critical habitat for Astragalus pycnostachyus var. lanosissimus. consist of, but are not limited to:
(1) Vegetation cover of at least 50 percent but not exceeding 75 percent, consisting primarily of known associated native species, including but not limited to, Baccharis salicifolia, Baccharis pilularis, Salix lasiolepis, Lotus scoparius (deerweed), and Ericameria ericoides (coast goldenbush);
(2) Low densities of nonnative annual plants and shrubs; (3) The presence of a high water table, either fresh or brackish, as evidenced by the presence of channels, sloughs, or depressions that may support stands of Salix lasiolepis, Typha spp., and Scirpus spp. (cattail);
(4) Soils that are finegrained, composed primarily of sand with some clay and silt, yet are welldrained; and
(5) Soils that do not exhibit a white crystalline crust that would indicate saline or alkaline conditions.

Criteria Used To Identify Critical Habitat

Critical habitat designated for Astragalus pycnostachyus var. lanosissimus includes the only known location where the subspecies currently occurs and two other sites with high potential to support the subspecies based upon habitat and/or historical occurrences. We have concluded that establishment of new, selfsustaining populations of Astragalus pycnostachyus var. lanosissimus at other sites is essential for the subspecies' survival because it is currently known from a single location where its future is uncertain due to its small population size, and the high degree of threat from chance catastrophic events. Catastrophic events are a concern when the number of populations or geographic distribution of a species is severely limited (Shaffer 1981, 1987; Meffe and Carroll 1997; Primack 1998), as is the case with Astragalus pycnostachyus var. lanosissimus. Because a critical habitat designation limited to this subspecies' present range, which is one known location, would be inadequate to ensure its conservation, the establishment of additional locations for Astragalus pycnostachyus var. lanosissimus is critical to reducing the risk of extinction.

For sites not currently occupied by Astragalus pycnostachyus var. lanosissimus, we first considered the historical range of the subspecies based upon collection data and records from the CNDDB (CDFG 2001). From this potential distribution, we located areas where the plants were observed or collected in the past.

By examining aerial photographs and reviewing pertinent literature, and
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through discussions with botanical experts, we identified areas where the primary constituent elements exist. These broader areas were refined with information on the extant population and the other locations as derived from Wilken and Wardlaw (2001). We also engaged in discussions, by phone and electronic mail, with the Carlsbad Fish and Wildlife Office, which has responsibility for and experience with, the historical locations in southern Los Angeles and Orange Counties (K. Clark, Service, pers. comm. 2002; J. Fancher, Service, pers. comm. 2002).

We identified the boundaries of the units on aerial photographs and U.S. Geological Survey topographical maps and refined them based upon adjacent land uses. For example, one unit is bordered on three sides by urban areas and on the other side by the Pacific Ocean. The critical habitat units were designed to encompass a large enough area to support existing ecological processes that may be essential to the conservation of Astragalus pycnostachyus var. lanosissimus (i.e., that provide areas for population expansion, provide connectivity or linkage between colonies within a unit, and support populations of pollinators and seed dispersal organisms).

Within the historical range of Astragalus pycnostachyus var. lanosissimus, we considered two of the collection localities: Bolsa Chica, Orange County, and the Ballona Wetlands, Los Angeles County. During discussions with biologists most familiar with these areas (K. Clark, pers. comm. 2002; J. Fancher, pers. comm. 2002), we concluded that, although the areas remain undeveloped for the most part, conditions have changed dramatically since the plants were collected. For example, the Bolsa Chica area has been altered by oil development, which created raised pads and lower excavated areas, and channelized the natural freshwater inflow that once existed. The influence of tidal flow is now more pronounced, to the point that the soils have become saline. The area, also, does not contain plant species that indicate freshwater influence. Plant species indicating freshwater influence are found at the currently occupied site and at locations where the close relative, Astragalus pycnostachyus var. pycnostachyus, occurs. Also, longrange plans for Bolsa Chica would increase the tidal influence by establishing a direct connection to the ocean across Bolsa Chica State Beach. The Ballona Wetlands are similarly isolated from a freshwater source and are subject to considerable disturbance from human activities. Consequently, we rejected both Bolsa Chica and the Ballona Wetlands as potential reintroduction sites for Astragalus pycnostachyus var. lanosissimus and as critical habitat units.

For critical habitat outside of the historical range, we considered areas from Gaviota State Beach, Santa Barbara County, south to San Diego County. We have included only one critical habitat unit (Carpinteria Marsh) that could be considered outside of the known range of the subspecies in this critical habitat designation. That location is included because of its proximity to the historical distribution and the presence of primary constituent elements. Data to support designation of critical habitat elsewhere outside the historic range of Astragalus pycnostachyus var. lanosissimus are limited. In addition, introducing Astragalus pycnostachyus var. lanosissimus in the vicinity of Astragalus pycnostachyus var. pycnostachyus is not prudent because of the potential for hybridization and dilution of genetic identity between the two varieties. Therefore, we did not consider other locations outside the historical range of Astragalus pycnostachyus var. lanosissimus.

In designating critical habitat, we made an effort to avoid developed areas, such as housing developments, that are unlikely to contain the primary constituent elements for Astragalus pycnostachyus var. lanosissimus. However, we did not map critical habitat at a small enough scale to all for the exclusion of all lands unlikely to contain the primary constituent elements essential for the conservation of Astragalus pycnostachyus var. lanosissimus. Areas within the boundaries of the mapped units such as buildings, roads, parking lots, railroads, airport runways and other paved areas, lawns, and other urban landscaped areas will not contain any of the primary constituent elements. Federal actions limited to these areas, therefore, would not trigger a section 7 consultation, unless they affect the species and/or primary constituent elements in adjacent critical habitat.

In summary, we selected critical habitat areas that provide for the conservation of Astragalus pycnostachyus var. lanosissimus where it is known to occur, as well as areas essential for establishment of new populations in order for the species to be conserved. As noted above, establishment of new populations is important to reduce the risk of extirpation from chance catastrophic events.

Special Management Considerations or Protections

When designating critical habitat, we assess whether the areas determined to be essential for the conservation of the species may require special management or protections. The Mandalay Unit may require special management considerations or protections due to the threats to the species and its habitat posed by development (e.g., loss of native vegetation, disruption of pollinator community, herbivory by snails, increase in nonnative plants, soil remediation), herbivory by rabbits, and trampling as a result of human activity. Currently, competition by nonnative plants, herbivory by snails and rabbits, and human activity are ongoing in the Mandalay Unit. The McGrath Unit may require special management considerations or protections due to the threats to the species and its habitat posed by invasive, nonnative plants and trampling as a result of human activity. Currently, competition from nonnative plants and human activity are ongoing in the McGrath Unit. The Carpinteria Salt Marsh Unit may require special management considerations or protections due to the threats to the species and its habitat posed by nonnative plants and high salinity. Currently, competition from nonnative plants and fluctuations in salinity levels are ongoing in the Carpinteria Salt Marsh Unit. Critical Habitat Designation

The critical habitat areas described below constitute our best assessment at this time of the areas essential for the conservation of Astragalus pycnostachyus var. lanosissimus. The areas designated as critical habitat are: (1) Mandalay, including the site of the extant population at Fifth Street and Harbor Boulevard in the city of Oxnard, Ventura County; (2) McGrath Lake area, McGrath State Beach, California Department of Parks and Recreation (CDPR), Ventura County, and (3) Carpinteria Salt Marsh Reserve run by the University of California, Santa Barbara, (UC Santa Barbara) Santa Barbara County.

The only site occupied by a natural population of Astragalus pycnostachyus var. lanosissimus is in the Mandalay Unit in the city of Oxnard. A research population has been initiated at the Mandalay State Beach portion of the unit. Research introductions have also occurred at the Carpinteria Salt Marsh Reserve and McGrath State Beach units. Research populations may be present in some of the units; however, these are
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not considered selfsustaining populations as they require continued monitoring and control. Therefore, we consider all of the units unoccupied except for the Mandalay Unit where the natural population occurs. We find that unoccupied areas are essential to the conservation of the species because the single extant natural population is likely to be affected by direct and indirect impacts of the approved development of the North Shore at Mandalay project (i.e., due to inadequate preserve design). Furthermore, a catastrophic event could eliminate the population regardless of the development. In the absence of suitable offsite locations where the subspecies could be established, it is possible that it could go extinct. The two unoccupied sites we have included have been identified through research as the most likely candidates for new populations because the primary constituent elements are present and they can be adequately protected from the threats identified earlier. One site is within the historical range of the subspecies and one is not.

Our evaluation of Astragalus pycnostachyus var. lanosissimus has shown that suitable habitat areas are scarce within the historical range of the subspecies. The combination of associated plant species, high groundwater, low salinity, and other primary constituent elements has either been removed or disrupted by urbanization, agriculture, oilfield development, or flood control projects. Other areas within the historical range were considered and rejected, and areas outside of the historical range were limited in scope and only one was included. The scarcity of suitable habitat has also contributed to the need to designate areas currently unoccupied by Astragalus pycnostachyus var. lanosissimus as critical habitat. We have therefore concluded that the designation of currently unoccupied locations as critical habitat is essential to the conservation of Astragalus pycnostachyus var. lanosissimus.

In summary, we have designated approximately 420 ac (170 ha) of land in three units as critical habitat for Astragalus pycnostachyus var. lanosissimus. The approximate areas of designated critical habitat

FOR FURTHER INFORMATION CONTACT Diane Noda, Field Supervisor, Ventura Fish and Wildlife Office, U.S. Fish and Wildlife Service, 2493 Portola Road, Suite B, Ventura, CA 93003 (telephone 805/6441766; facsimile 805/6443958).