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HomeMy WebLinkAbout02.0 PC Staff Report 07.13.1993• • PC 7-13-93 PROJECT INFORMATION AND STAFF COMMENTS REQUEST: Sketch Plan and PUD Amendment - Westbank Ranch PUD Filing #4 APPLICANT: Westbank Ranch #1 LTD PLANNERS: Jerome Gamba & Associates ENGINEERS: Jerome Gamba & Associates LOCATION: A parcel of land located in portions of Sections 35 T6S, R89W, Section 1 and 2, T7S, R89W of the 6th P.M.; more practically described as a parcel of land located south of Westbank Ranch PUD Filing #1, #2 and #3, south of County Road 109, approximately 3.5 miles southeast of Glenwood Springs. SITE DATA: A 285.08 acre parcel to be split into tracts of land that would allow a maximum of sixty three (63) single- family dwelling units and one residential fourplex (67 total dwelling units). WATER: Wells - Community System SEWER: ISDS ACCESS: County Road 109 EXISTING ZONING: PUD I. RELATIONSHIP TO THE COMPREHENSIVE PLAN The proposed PUD is located District 1C -Central Water and Sewer, Severe Environmental Constraints as indicated on the Comprehensive Plan Management Districts Map. II. DESCRIPTION OF THE PROPOSAL A. $ite Description: The proposed PUD is located on a bench overlooking the Roaring Fork river valley floor, directly above the existing Westbank development. Topography on the site consists of three distinct geologic configurations: a moderately sloping lowland fully vegetated with native grasses, a steeply sloped zone sparsely vegetated with evergreen species, sagebrush, and native grasses, and an upland benched area well vegetated with significant sagebrush, rabbitbrush, and isolated stands of pinion and juniper. Several intermittent drainages are visible in the steeper portions of the property and extend into the upland bench. Elevations on the property range from 5,950 at the northern edge, to almost 6,880 feet at the southern reaches of the property. A vicinity map is shown on the cover sheet of the enclosed plans. 1 • • B. Background: Westbank Filing #4 was approved and platted in September of 1982. In April of 1993, the applicants proposed revisions to the 1982 approval, but withdrew the application based on comments from the Planning Commission. Table 1 summarizes the 1982 approval, the April 1993 submittal, and the current proposal. TABLE 1 COMPARISION BETWEEN APPROVED AND PROPOSED PROJECT Since that 1982 approval, the Subdivision Improvements Agreement (SIA) has been amended in respect to two dates: the deadline for improvements has been changed from November 1, 1984 to November 1, 1994; and the deadline for security for the improvements described in the SIA has been extended from July 1, 1983 to July 1, 1993. These amendments were made in response to a public meeting to consider the revocation of the approval of Filing #4 in March of 1992, due to the failure to complete any of the required improvements on the site. Since the 1993 SIA security date has past, the Board has the authority to revoke the PUD, which would return the property to its underlying zoning (A/R/RD). No action has been taken by the Board at this time. C. Development Proposal: The current proposal includes 63 single-family lots and one multi -family fourplex for a total of 67 dwelling units. A zone district map and site plan are included in the staff packet. The approved plan anticipated an expansion of the existing water system which currently serves Westbank Filings 1, 2 and 3. The current proposal includes a separate system, with water to be provided from new well(s) to be augmented with Ruedi Reservoir water. A total of 40 acre feet of water is to be purchased from Ruedi for the needs of the development. Fire protection will be provided via hydrants and a storage system. No hydrant locations or infrastructure details are included with this submittal. 2 1982 APPROVAL APRIL 1993 SUBMITTAL . ................... . ......................... . CURRENT PROPOSAL Dwelling Type and Number 10 four-plex lots, 10 duplex lots and 38 single- family lots (98 Total DUs) 98 single-family dwelling units 63 single-family dwelling units and 1 multi -family ' fourplex (67 total DUs) Lot Size 0.44 acres to 1.94 acres (36 of 58 less than 1 acre) 1.0 to 15.0 acres (0.344 DUs/acre) 1.0 to 14.26 acres (0.438 DUs/acre) Site Plan 81 DUs on upper bench and 17 on lower bench 91 DUs on upper bench and 7 on lower bench 51 DUs on upper bench and 17 on the lower bench Water Supply Expansion of existing system serving Westbank Filings I through IH Separate central system augmented with Ruedi water Separate central system augmented with Ruedi water. Sewage Disposal Central System ISDS ISDS Zone Districts Residential/Single Family, Residential/Cluster Housing, Residential/Multi Family, Open Space Residential/Single Family Residential/Single Family, Residential/Multi- Family, Open Space Open Space 150 acres 78 acres 117 acres Since that 1982 approval, the Subdivision Improvements Agreement (SIA) has been amended in respect to two dates: the deadline for improvements has been changed from November 1, 1984 to November 1, 1994; and the deadline for security for the improvements described in the SIA has been extended from July 1, 1983 to July 1, 1993. These amendments were made in response to a public meeting to consider the revocation of the approval of Filing #4 in March of 1992, due to the failure to complete any of the required improvements on the site. Since the 1993 SIA security date has past, the Board has the authority to revoke the PUD, which would return the property to its underlying zoning (A/R/RD). No action has been taken by the Board at this time. C. Development Proposal: The current proposal includes 63 single-family lots and one multi -family fourplex for a total of 67 dwelling units. A zone district map and site plan are included in the staff packet. The approved plan anticipated an expansion of the existing water system which currently serves Westbank Filings 1, 2 and 3. The current proposal includes a separate system, with water to be provided from new well(s) to be augmented with Ruedi Reservoir water. A total of 40 acre feet of water is to be purchased from Ruedi for the needs of the development. Fire protection will be provided via hydrants and a storage system. No hydrant locations or infrastructure details are included with this submittal. 2 i • III. REVIEW AGENCY/PUBLIC COMMENTS A. Colorado Geological Survey: No comments have been received from the Geologic Survey. Staff has submitted the entire application, and comments are expected prior to preliminary plan. A Reconnaissance Geologic Investigation (CTL/Thompson, Inc. June 24, 1993) is included as Exhibit G of the application. The primary conclusions from the CTL/Thompson report are as follows: • "Preliminary foundation recommendations and construction criteria can only be determined from more detailed, site specific surface and subsurface investigations and analysis" (p.1); • "Areas mapped as Qsl (Slide Deposits) on the site include medium to large slump features and failures of colluvial slopes. These areas appear fairly stable but will become unstable if disturbed" (p.6); • "None of the geologic conditions found are considered to be sufficiently hazardous to prevent development of the project as proposed, however, potentially hazardous geologic conditions must be properly planned for during site development" (p.7); • "We recommend that detailed, site specific soils and foundation investigations be performed for each residence built in this development" (p.7); • "Development in areas of potentially unstable slopes or immediately adjacent to steeper slopes along the lower edge of the upper terrace should be avoided" (p.8); • Drainage and ravines on the site present moderate potential hazard from flash flooding and low potential from debris flow. We recommend determining the 100 year flood plain (which will be a part of the site drainage plan) and avoid development in those areas" (p.9). B. Colorado Department of Health: Staff contacted Mr. Dwayne Watson concerning the project on July 8, 1993. Written comments are not required until Preliminary Plan (scheduled for August 10, 1993), however, Mr. Watson still has serious concerns with the proposed ISDS systems, including slope and soil constraints. Mr. Watson indicated that his Preliminary Plan comments will require a central sewage system for the development. Mr. Watson suggested that the preferred alternative would be a tie-in to Glenwood Springs. The Colorado Department of Health has significant influence on the application. State Statute requires that "No (preliminary) plan shall receive the approval of the Board of County Commissioners unless the Department of Health to which the plan is referred has made a favorable recommendation regarding the proposed method of sewage disposal."` C. Colorado State Forest Service: The Colorado State Forest Service reviewed the previous submittal, and conducted fieldwork on April 1, 1993. The proposed subdivision is in an area that has been mapped as medium to high hazard for wildfire. The Forest Service was particularly concerned with areas in the subdivision where grades exceed 30 percent and the densely vegetated drainages. 30-28-136 Referral Agencies and Review Requirements (Preliminary Plan Submissions)- Colorado Revised Statutes. 3 • • Forest Service standards require dual ingress/egress points, which are not included in the proposal. The proposed cul-de-sac far exceed the 750 foot maximum length as recommended by Forest Service standards. Turnouts are recommended at 750 intervals to provide adequate emergency vehicle access. Mr. Roger's suggested that structures not be located in or at the head of drainages. A copy of Kelly Roger's April 7, 1993 letter included in the application as Exhibit I. D. Carbondale and Rural Fire Protection District. Ron Leach visited the site on April 29, 1993, and his comments are included in the application as Exhibit I. Mr. Leach concluded that the wildfire danger was "low", conflicting with the conclusions of the Forest Service. It appears Mr. Leach did not address grade or drainages in his assessment. E. U.S. Bureau of Land Management: The BLM has not submitted comments on this submittal, however had the following comments on the April submittal: 1. The BLM recommended fence standards that allow for easy passage by big game; 2. The parcel immediately adjacent to the site has been identified as a disposal parcel, and is not expected to remain in public ownership; 3. The density proposed by the applicant will render the critical mule deer habitat unsuitable for deer habitat, and will increase deer impacts on adjacent property, particularly during the winter months; 4. The soils on the site are poorly suited for housing development due to shallow depth to bedrock, steep slopes, and very high hazard of water erosion. A copy of Michael Mottice's April 2, 1993 letter is attached on page 13 . F. Public Service Company: No response has been received from Public Service. G. Colorado Division of Wildlife: The Division has not commented on the current submittal, but noted earlier that the area is considered to be elk winter range and critical deer habitat, meaning that the loss of critical winter habitat would adversely affect deer in the area. DOW further states that big game populations in the area will be threatened by domestic dogs, loss of native vegetation, increased erosion, increased vehicular traffic, increased human/wildlife interaction, and migration obstacles. The DOW suggests the following mitigation: 1. Reduce the density by cluster development; 2. Require underground utilities to protect raptors; 3. Require fencing restrictions; 4. Restrict or prohibit domestic dogs and horses within the subdivision; 5. Restrict building envelopes to preserve native vegetation. In addition, the DOW suggests that all homeowners are aware of the critical habitat designation, and realize that deer and elk will die on the property, and are responsible for disposing of carcasses. A copy of Larry Green's April 2, 1993 letter is attached on page yrs In response to DOW concerns, the applicants have prepared dog restrictions, based on 4 • • previously approved subdivisions in Garfield County. A copy of these proposed restrictions are included in the application, beginning on page 7. H. Roaring Fork School District RE -1: No Response. I. Office of the State Engineer. Division of Water Resources: No response. J. Public Service Company: No response. K. Holy Cross Electric Association: No Response. L. U.S. West Communications: No Response. M. Rocky Mountain Natural Gas: No Response. IV. STAFF COMMENTS This application is requesting approval for a PUD amendment and sketch plan review. These two processes require compliance with different standards, and each is addressed below separately. 1. PUD REZONING REQUEST: Westbank Filing #4 was processed as a PUD, with the existing portions of the project processed as a subdivision request. The standards for the current proposal (Zone District Amendment) are addressed in Section 4.0 of the Zoning Resolution. PUD Objectives: A PUD may be approved by the County Commissioners for the following purposes and to achieve the following objectives: 1. To provide necessary commercial, recreational, and educational facilities conveniently located to housing; 2. To provide well -located, clean, safe and pleasant industrial sites involving a minimum of strain on transportation facilities (NOT APPLICABLE); 3. To insure that the provisions of zoning laws which direct the uniform treatment of dwelling type, bulk, density, and open space within each zoning district will not be applied to the improvement of land by other than lot -by -lot development in a manner which would distort the objectives of the zoning laws; 4. To encourage innovations in residential, commercial and industrial development and renewal so that the growing demands of the population may be met by greater variety in type, design, and layout of buildings and by the conservation and more efficient use of open space ancillary to said buildings; 5. To encourage a more efficient use of land and of public services, or private services in lieu thereof, and to reflect changes in technology of land development so that resulting economies may inure to the benefit of those needing homes; 6. To lessen the burden of traffic on streets and highways; 7. To conserve the value of land; 8. To provide a procedure which can relate the type, design, and layout of residential, commercial, and industrial development to the particular site, thereby encouraging preservation of the site's natural characteristics; or 9. To encourage integrated planning in order to achieve the above purposes and 5 • • objectives of development.2 In the application, the applicant desire to modify several provisions of the approved PUD because the "it is felt that the density of lot of the original plan in keeping with development that has occurred in the general area (sic)".. and "the difficulty of permitting and constructing sewage treatment facilities which would discharge to the Roaring Fork River has caused the construction of central sewage collection system to be impractical."3 Staff notes that the purpose of a PUD is not to perpuate adjacent development, but rather gives the developer to be innovative in design beyond the traditional subdivision process. Consistency with the General Plan: Section 4.04 requires that "No PUD shall be approved unless it is found by the County Commissioners to be in general conformity with the County's General Plan". Comments regarding potential conflicts are as follows: Housing: The overall goal of the housing section of the Comprehensive Plan is as follows: Provide for affordable and diverse housing types capable of accommodating the needs ofCountyresidents, in allincome ranges, without putting a financial burden on existing public servicers' Objective #3 calls for the promotion of a variety of housing types and mix through the use of a flexible development review process. Policy #3 states that the PUD process is encouraged, so that the development community has greater flexibility in project design.' In staff's opinion, the cluster concept proposed in the approved project is more in line with the housing goals described earlier than the current application, although a single, four unit fourplex is included in the development. Recreation and Open Space: Policy 5 requires that areas such as floodplains and geological unstable soils which are restricted for the building of habitable structures will be used as common open space accessible to the public in new developments.6 Additional geologic data has been provided by the applicant and lot configurations have changed based on these constraints. The CTL/Thompson Report indicated that "Development in areas of potentially unstable slopes or immediately adjacent to steep slopes should be avoided".' As shown on the Geologic Hazard Map, (Sheet 18), areas of unstable slopes are included within platted lots, and are not dedicated to the public. 2Section 4.02 Purposes and Objectives of Development, Garfield County Zoning Resolution, 1984 as amended. 3Westbank Ranch Planned Unit Development Modification and Westbank Ranch Filing #4 ,Subdivision, (Gamba and Associates) page 1. 4Garfield County Comprehensive Plan, page 2. 5Garfield County Comprehensive Plan, page 2. 6Garfield County Comprehensive Plan, page Z 'Reconnaissance Geologic Investigation, CTL/Thompson, Inc. June 24, 1993, page 8. 6 • • The approved project is clustered, and areas having considerable environmental constraints are zoned open space. Transportation: Policy 5B requires that excessive road cuts that will create negative visual impacts will be discouraged.8 The proposed road alignment crosses numerous drainages, and no cut/fill estimates or visual analysis information has been submitted. The Plans and Profiles for the proposed roads (Sheets 7 through 15) indicate several significant areas of cut and fill, particularly along reaches of Huebinger Drive (see sheet 8). No alternative road alignments have been presented to reduce cut and full areas. Water and Sewer Services: Objective 3 encourages developers to carefully analyze the site's capability to accommodate individual sewage disposal when it is being considered as a part of a development proposal. Policy 3A states that the County will require developers proposing ISDS to provide information that demonstrates to the County that the land involved can physically accommodate the individual systems.9 The original proposal, and the Geologic Report prepared in 1976, did not address the feasibility of ISDS on the site due the proposed central sewage system. Percolation test have been performed at four locations on the site, as indicated on the Drain Plan Map (Sheet 5). Soil Conservation Service mapping indicate that 8 soil groups are located on the property. The four percolation tests were located within the Gypsum-Gypsiothid Complex (#55), Urraca Moist-Mergel Complex (#109), Empedrado Loam (#35) and Almy Loam group (#6). Both the Empredado and Amly soil groups are considered to have only moderate constraints for septic systems. All other soil groups (Cushool-Rentsac #25, Dahlquist-Southace #28, Earsman #33 and Southace Cobbly Sandy Loam (#98) are considered to have severe constraints to ISDS. These areas were not included in the percolation samples, and are found in areas proposed for residential development. The approved project includes a central sewer option. Environment: Objective 1 discourages the development of land in areas of identified severe environmental constraints. Policy 1, designed to implement this objective, requires that the County shall discourage and reserve the right to disapprove (sic) development in areas with identified severe environmental constraints such as active landslides, debris slides, unstable slopes, bedrock slides, major mudflow, radioactive tailings, slopes over 25 percent and 100 year floodplain. Objective 5 requires projects ensure that development on land having moderate or minor environmental constraints consider the limitations of the land. `° Objective 6 requires that development proposals consider soil constraints as a part of the physical design, and policy 6 requires that the County discourage development in areas with severe soil constraints. Objective 9 encourages development in areas with the least environmental constraints prior to land with the greatest physical limitations." The CTL/Thompson Geologic Report included with this submittal includes identified constraints on the property (sheet 18). Identified hazards include unstable slopes, potentially unstable slopes, flash flood hazard, accelerated erosion areas and debris/mudflow hazards. Staff recognizes that the development has concentrated the majority of development in areas outside of known geologic risks. However, large portions of lots 1, 2, 35, 37, 39 and 64 are in areas of potentially unstable slopes. Lots BGarfeld County Comprehensive Plan, page 8. 9Garfield County Comprehensive Plan, page 10. 1 °Garfield County Comprehensive Plan, page 12. "Garfield County Comprehensive Plan, page 13. 7 • • 52, 53, 54, 55, 56, 57, 58, 59, 60, 62 and 63 are in an identified flash flood hazard area. No evidence has been submitted regarding possible alternatives to the geometry of the proposed roadway system, or evidence suggesting that the proposed alignment was designed to limit these impacts. Performance Standards: The Comprehensive Plan includes a series of performance standards addressing specific environmental constraints, including areas having slopes greater than 25 percent. The Plan states that slopes exceeding 25 percent may be: 1. Maintained as open space; 2. Platted as a portion of an approved building envelope, with an open space easement; 3. Platted as a portion of a building lot which as adequate usable building space available other than steep slopes; 4. Platted as a portion of a subdivision and dedicated as permanent open space; 5. Developed with special design considerations and engineering.12 Slope analysis for each lot is shown on sheet 2 (Preliminary Plan Lot Layout and Dimensions). All lots have at least one (1) acre of buildable space less than 40 percent. Slopes between 25 and 39 percent are not indicated. Performance standards also address the impact of development on the natural terrain. Specifically, the Plan requires that the proposed development should be designed in a manner which demonstrates a "fit" with the existing topography of the land.13 Staff has no evidence of cut/fill estimates to assess compliance with this requirement, although the current road alignment appears to have significant topographical constraints due to the crossing of several major drainages on the site. As discussed earlier, no alternatives for the current alignment that would minimize the cut/fill have been proposed. Sewage disposal facilities are also addressed by performance standards. Specifically, the Plan requires that central sewage disposal systems be included in proposals that have severe or moderate septic limitations. The State Department of Health and hazard maps reviewed by Staff indicate that the site may pose significant constraints to traditional ISDS systems. Rather than proposing a system in compliance with the standard, the applicant has removed the central sewer from the proposal. 2. ZONING REQUIREMENTS: Section 4.08 addresses the PUD processing requirements, and the following discussion addresses specific requirements that do not appear to have been met by the application:14 1. Under provisions of Section 4.08.05(2)(h), the applicant is required to identify sites suitable for construction, as well as sites suitable for sewage disposal based upon the limitations described in the soils report. As described earlier, this area has significant slope and soil constraints. Building envelopes may not be `2Garfreld County Comprehensive Plan, page 27. 1 3Garfield County Comprehensive Plan, page 28. 1 4Garfield County Zoning Resolution, 1984 as amended, pages 39-41. 8 • • possible on every lot proposed in the sketch plan, and only four percolation tests have been performed on the site; 2. Under provisions of Section 4.08.05(7)(E)(i), the applicant is required to identify the proposed water source adequate to serve the PUD. The proposed water source are wells augmented by Round II sales from Ruedi Reservoir. It is not clear that such water contracts are currently available, or whether the amount identified by the applicant is adequate to support a well servicing the PUD; 3. Under provisions of Section 4.08.05(7)(E)(ii), the applicant must describe the proposed method of sewage treatment. In regards to sewage treatment, the Department of Health has previously noted the difficulties of the system proposed in any area with soils that may not be appropriate for ISDS, and slopes that may not accept ISDS The provision of the Code inherently requires that the system proposed is functional and responsive to unique conditions of the site. The evidence in this regard is inconclusive; 4. Under provisions of Section 4.08.05(7)(E)(iii), the applicant must describe the general manner in which storm drainage will be handled. Exhibit H of the application includes drainage basin calculations for culvert sizing. As shown on Sheet 18, a significant portion of the northern lots within the PUD are within an area defined as a "flash flood hazard", assumed to originate from the drainage basin during a 100 -year storm event. No mitigation for this hazard has been presented by the applicant, or a justification for the lots proposed for the area; 5. Under provisions of Section 4.08.05(7)(F)(iv), the applicant must address legal access to the site. Garfield County Road Standards allow cul-de-sacs that do not exceed six hundred feet (600') in length. The Board of County Commissioners may approve longer cul-de-sacs for topographic reasons and it can be proved that fire protection and emergency access is provided.15 The longest cul-de-sac within the PUD extends from Native Lane to its terminus, a distance of approximately 3,695 feet in length, with no alternative access. No topographic explanation is included in the application. The fire department has made comments regarding the cul-de-sac, and concluded that with a 90 foot turnaround and emergency turnarounds at 90 ° driveways. The cul-de-sac radius proposed on the plans for Huebinger Drive is 70'. 6. Under provisions of Section 4.08.05(7)(G), the applicant must provide evidence that the PUD has been designed with consideration of the natural environment of the site and the surrounding area and does not unreasonably destroy or displace wildlife, natural vegetation, or unique natural or historic features. The current plan, based on documentation from the Division of Wildlife cited earlier, will displace wildlife. There does not appear to be a statement regarding the manner in which consideration has been given to the affects this impact, although dog restrictions have been included with the . Furthermore, staff contends that the overall design of the road geometry and lot configuration failed to consider the unique physical constraints on the site, when compared to the approved project. 3. PROPOSED ZONE DISTRICTS. The application includes the following zone districts within the PUD: Residential Single Family District (R/S.F.), Residential Multi -Family Fourplex District (R/M.F.4) and Open Space. The zone district map (Sheet 3) includes two additional zone districts: Greenbelt, Drainage and Parks and "Bikepath". Staff suggests that the greenbelt drainage easements are not appropriate as a separate zone 1 5Garfield County Subdivision Regulations, Section 9.33(A), page 9-2. 9 • • district, and should be included within an overall Open Space District with language included in the zone district text permitting such uses. The bikepath zone district should also be handled in the same fashion, i.e. as a permitted use and easement within the Open Space designation. Staff questions the logic of the location of the bike path as shown on Sheet 3. As proposed, the bikepath begins at the cul-de-sac of "Old Native Lane", extends west approximately 1,350 feet, and terminates at a drainage easement. Staff commends the applicant for bike path development, but suggests that the easement would be more useful on the County Road 109 frontage on the west end of the property. V. STAFF RECOMMENDATION Staff recognizes that the applicant has adjusted the density of the overall project since the last submittal. In addition, this proposal includes multi -family housing (one fourplex), 200 foot drainage easements, provisions for dog control to protect wildlife, and additional geologic information. All of these issues were discussed during the applicant's last meeting before the Planning Commission. The additional geologic data highlight the physical constraints inherent with the property, including large portions of lots within areas identified as flashflood hazards, potentially unstable slopes, and accelerated erosion areas. In addition, access to the site is severally constrained due to topography, and cut/fill areas may be significant. In addition, there still are issues regarding central sewer vs. ISDS on the site, although the Department of Health will not officially comment until Preliminary Plan. To staff's knowledge, there have been no discussions between the applicant and the Health Department to date. The primary issue in front of the Planning Commission centers on the differences between the approved PUD zoning and the current proposal. In staff's opinion, the approved project is superior to the current proposal in the following respects: • The central sewer is consistent with Colorado Department of Health objectives; • The approved project is based on a cluster concept, focussing development activities in areas with the least environmental constraints; • The multiple -housing proposed in the original PUD is more consistent with the goals and objectives of the Comprehensive Plan. The approved plan will be displayed at the Public Meeting for comparative purposes. If the Planning Commission feels the applicant has addressed the issues raised at the last public hearing, and additional issues can addressed at Preliminary Plan, the following conditions of approval are offered as a starting point: General 1. All representations, either within the application or at stated at the public hearings before the Planning Commission and the Board of County Commissioners shall be considered conditions of approval unless stated otherwise by the Planning Commission and the Board of County Commissioners. the public hearing, are considered conditions of approval. Geology 2. The Preliminary Plan shall have a building envelope designated for every lot within the PUD. All building envelopes will avoid active and older landslides, manmade fill, and unsuitable slopes. No lot will be created that does not contain an acceptable building envelope. No lot shall be created that is smaller than the minimum lot size allowed in 10 • • that particular zone district. 3. An engineered foundation shall be required for all structures within the PUD and submitted with building permit applications. Furthermore, all final plats shall have the following plat notes: A. Prior the issuance of a building permit, the owner of each lot shall prepare and submit a soils and foundation report, and ISDS design, and a grading and drainage plan prepared and certified by a professional engineer. All improvements shall be constructed in accordance with such measures which shall be constructed in accordance with such measures which shall be a condition of the building permit. ISDS 4. At the time of Preliminary Plan submittal, the applicant shall submit an ISDS feasibility study, prepared by a professional engineer, addressing the feasibility of ISDS systems on each lot, unless central sewer is required by the Colorado Department of Health. Water Supply 5. At the time of Preliminary Plan, the applicant shall demonstrate evidence of adequate water quantity from the proposed well field for the project. Road Alignment 6. At the time of Preliminary Plan, the applicant shall submit cut/fill estimates for the proposed road alignment, including an assessment of the relationship between the proposed road alignment and the visual impacts of the resulting cut slopes. Zone Districts 7. The bikepath and drainage districts shall be included within the Open Space Zone District with appropriate language and to the Zone District text. Wildfire 8. All building envelopes identified at preliminary plan shall be located in or at the head of drainages. Flashflood 9. Prior to Preliminary Plan, the applicant shall determine the 100 year floodplain, consistent with the recommendations of CTL/Thompson Reconnaissance Report. SKETCH PLAN REQUEST: Section 3.23 of the Garfield County Subdivision Regulations states that "the Planning Commission shall review the application for consistency with the standards and policies set forth in the following: A. Garfield County Subdivision Regulations; B. Garfield County Zoning Resolution; C. Garfield County Comprehensive Plan; D. Garfield County Road Standards and Policies; E. Garfield County municipal comprehensive plans and municipal regulations, as applicable; and F. Other applicable local, state and federal regulations, resolutions, plans and policies, as applicable." 11 • • The ma jority of these issues have been addressed in the previous discussion regarding the PU 3 rezoning approval. All of these issues are appropriate for discussion with the applica it. The ske tch plan process is purely informational. Completion of the Sketch Plan process does nc t constitute approval of the proposed plan. The Sk tch Plan comments shall be valid for a period not to exceed one (1) year from the dat, of the Planning Commission review. If a Preliminary Plan for the proposed subdivi ;ion is not presented to the Garfield County Planning Commission within this period, the applicant shall submit an updated Sketch Plan application to the Planning Depart nent for review and comparison with the original application. 4 1 !...,I,Ici STATE OF COLORADO 0 \i,i ft 2 1993 Roy Romer, Governor �[�n 0DEPARTMENT OF NATURAL RESOURCESDIVISION OF WILDLI�+F `r��~�`�� AN EQUAL OPPORTUNITY EMPLOYER J0 3 Highway 6 GARF<<'LD CaUN- Perry D. Olson, Director Glenwood Springs, CO 81601 6060 Broadway April 1, 1993 Denver, Colorado 80216 Telephone: (303) 297-1192 Dave Michaelson Regulatory Offices and Personnel 109 8th Street, Suite 303 Glenwood Springs, CO 81601 RE: Westbank Ranch Filing #4 Resubdivision 1 EIR TO For Wildl(fe— For People Dear Dave: On March 26, 1993, district wildlife manager Kevin Wright and I visited Westbank Ranch Filing #4 to review the site for wildlife values. We ob:;erved about twenty live deer browsing, three carcasses of dq:?er lost during this winter, heavy utilization of sagebrush and :rabbitbrush plants by big game, heavy use of trails into and out of the area and concentrations of pellet groups along ridge tops. Division of Wildlife mapping places Westbank Ranch Filing #4 in elk winter range and in critical deer habitat (meaning that :Loss of this critical winter range would adversely affect deer). Development of Westbank Ranch Filing #4 will stress big game populations because of increased domestic dogs running at large, loss of native vegetation, increased erosion, increased vehicular traffic, increased human/wildlife interaction and increased obstacles to negotiate such as fencing. We would like to recommend the following methods of minimizing impacts to current wildlife occupants: 1. Reduce the density of 98 single family homesites by the use of fcurplex lots, duplex lots, clumping homesites, and/or eliminating some lots or combining .Lots into larger lots. 2. Requ:re underground utilities to protect raptores (birds of prey) from electrocution. (A pair of golden eagles nest very clo:;e to this development.) 3. Require fencing restrictions. No wire fences. Wood and wood rail fences a maximum height of 48 inches with a maximum of three rails (allows for fawns to pass between rails) except for solid privacy fences which should be a minimum :of 72 inches. 4. No d:)gs allowed. DEPARTMENT OF NATURAL RESOURCES, Kenneth Salazar, Executive Director WILDLIFE COMMISSION, William R Hegberg, Member • Eldon W. Cooper, Member • Felix Chavez, Member • Rebecca L. Frank, Member Louis F. Swift, Secretary George VanDenBerg, Chairman • Arnold Salazar, Member • Thomas M. Eve, Vice Chairman page 2 Westbank Ranch Filing #4 (continued) April 1, 1993 5. No livestock allowed on any lot. (Livestock, especially horses on small dryland lots denude native vegetation, increase erosion and increase wildlife damage to neighboring property owners from wildlifes attraction to hay fed to livestock.) 6. Restrict building of any structure to the third of each lot nearest the roadway. (This would help reduce loss of native vegetation.) 7. Require the developer to include the following information to buyers of each lot: A. These homesites are located in .critical deer and elk winter range. Taller browse plants such as sagebrush, oakbrush, mountain mahogany, serviceberry and bitterbrush usually protrude through the winter snows and are important to the survival of big game. Homeowners are encouraged to maintain native vegetation. B. Deer and elk can damage or destroy ornamental plantings. For suggestions to prevent wildlife damage and types of ornamentals less susceptible to damage, contact the Colorado Division of Wildlife. C. Death is natures way of keeping wildlife in balance with the amount of remaining habitat. Wildlife mortality rates are increased by human and pet interaction with wildlife. DEER AND ELK WILL DIE ON YOUR PROPERTY. It is the landowners responsibility to dispose of the carcass. Burial on your own property or disposal at a landfill is acceptable. Thank you for the opportunity to comment. We are available to discuss any of these issues presented above. You can contact myself or Kevin Wright at 945-7228. Sincerely, ")w -12-e-, Larry L. Green District Wildlife Manager