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Home My WebLink AboutARB201900126 Staff Report 2019-11-15ARCHITECTURAL REVIEW BOARD STAFF REPORT Project #/Name CCP-2019-02: Regional P25 Radio Infrastructure Project Review Type Advisory Review Parcel Identification 076000000054P0, -54P1, - 54N1, and -54ZO Location County Office Building, 5' Street (COBS) — 1600 5t" Street (Figure 1) Zoned Commercial Office (CO)/Entrance Corridor (EC) Owner/Applicant County of Albemarle/Harris Corporation (Helen Moeller) Magisterial District Scottsville Proposal Establish a microwave radio communications facility supporting operations of the Charlottesville-UVA-Albemarle County Emergency Communications Center (ECC) at its C0135 backup dispatch and equipment facility. See "Project Details" and Attachment A for additional information. Context The subject parcel lies on the south side of 5' Street. Stagecoach Road is nearby on the east, south and west. Single family residences are on both sides of Stagecoach Road. Residential apartment complexes and Region Ten offices are located on the opposite side of 5t' Street. A mix of residential types are in the general area. (Figure 1) Visibility See "Analysis Regarding Visibility" below. 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C� 473; aL A-- F 1 k ` 113�J' 02 ri o rF 583 ;' fr01 579 % ? 5471 its. y Rd.-- "�~ J kk', cs 4 '•¢r g coach ^'r. 406' 541 ;-5' 1 36 .y, 49 5 Figure 1: Project site 2 PROJECT DETAILS The proposal includes a 123'-tall monopole with two microwave dish antennas, a 6' antenna mounted at 120' AGL and a 3' antenna at 67' AGL. An ice shield is proposed at 71' AGL. Related ground equipment is also proposed. The facility is proposed to be located within the existing mostly enclosed parking and equipment area at the rear of the office building. 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Jets baen>.N96aw.n �LCaLi (P(YT� I I li w�}. l•x L nu IIAIRl411f1] yLf- II _SA. l- uJOH W YM3 Pal ! 4.tIN cc*5 .- r nKn;.•� T c'dti. ttlaFs •w T1Ji0 �S' Ee FiLifII'dF MI)y4lTele/gYF.y PB.., RI"S61F IYlsOi _ 'F. _�vf iw� '-.zr� •; _ — ELLVA71411 i NM1TElrlta eMrarcTa rx ruu s i!1 R e IeN Hn-W� e Sa NMA4Y1 e lL'aN1NN Figure 2: Illustration showing the proposed monopole and dish antennas. 3 FROM 1&IKIIRDMIR710[is IaBE" taingIagluiguI51`►I1 A Certificate of Appropriateness from the ARB is required for the base equipment portion of proposed telecommunications facilities in the Entrance Corridors. The ARB may impose conditions on the Certificate of Appropriateness, based on the EC Guidelines, and consistent with Section 5.1.40 of the Zoning Ordinance. Ref Guideline Issues Recommendations Accessory structures and equipment 17 The following should be screened to eliminate visibility from the Entrance Corridor street: e Mechanical equipment. The ground equipment is not expected to be visible from the 5' Street Entrance Corridor because the office building will provide full screening. (Figure 3 No objection. I yf�,L N f 1rf•'�y '. V • 6 �y4 Figures 3a, b and c: The facility is proposed to be located within the mostly enclosed parking and equipment area at the rear of the COBS office building. ANALYSIS REGARDING VISIBILITY OF THE FACILITY The ARB may act in an advisory capacity to the Agent as to whether the facility is being sited to minimize its visibility. For reference in this analysis, please note that the test balloon measured 12' in diameter and 8' tall. Ref Guideline Issues Recommendations Development pattern 33 The relationship of buildings and other A balloon test was conducted on July 31, 2019 for this proposal. 5' Street/Old Lynchburg Road and I-64 were traveled to determine Given the degree of structures to the Entrance Corridor visibility. visibility displayed at street and to other development within the balloon test, the the corridor should be as follows: Traveling south out of the city on 5't' Street and viewing from the west side of the street, the balloon was first visible in the vicinity of proposed location of f. The placement of structures on the Pinehurst Ct. (Figure 4) There, it was visible above the trees and it was sky -lit. Continuing south, at the first intersection with the facility does not site should respect existing views and Stagecoach Road, the off -site trees at the corner of the intersection provided screening (Figure 5), but a short distance further south, a sufficiently minimize vistas on and around the site. gap in the trees provided a clear view of the balloon (figure 6). Similar views were available traveling south on the west side of 5th the visibility of the Street (Figure 7). When viewed from vantage points on 5" Street north of the site, the taller section of the building (approximately 30' monopole from the tall) would completely screen the lower section of the monopole and all of the ground equipment. 5' Street and I-64 Entrance Corridors. On the east side of 5'i' Street facing north at the southern Stagecoach Road intersection, the balloon was clearly visible. It was sky -lit Negative visual and above the trees. In this location, most of the monopole would be visible. (Figure 8) At the entrance to COB5 from 5'b Street the impact is anticipated. balloon was also visible (Figure 9). Again, it was sky -lit and above the trees, and much of the monopole would be visible. North of the site entrance, a row of trees, in full leaf at the time of the balloon test, significantly screened the balloon from the street. (Figure 10) A A shade of light grey few gaps in the trees afforded a clear view of the balloon. (Figure 11) In those locations, the balloon was sky -lit and above the trees is recommended for and most of a monopole would be visible when viewed from those locations. The screening provided by the trees will be significantly the color of the diminished when the leaves drop, but the trees will still filter the view of the monopole. When viewed from vantage points on 5"' Street monopole. south of the site, the 16'-tall building would always completely screen the lowest portion of the monopole and the ground equipment. When traveling both eastbound (Figure 12) and westbound (Figure 13) on 1-64, the balloon was visible between the Cavalier Crossing and 5' Street Place Apartments developments. In those locations the balloon was sky -lit and above the trees. Westbound, the balloon was significantly above the trees. From these vantage points, the balloon was over 1000' away and it was visible for (estimated) less than 1000' along the 164 corridor. See Figure 14 for photo locations. Although visibility of the balloon was limited in some ways, when the balloon was visible, it showed that a significant amount of the monopole would be visible, sky -lit, and well above the trees. That level of visibility does not have an appropriate appearance for the Entrance Corridor. The color of the monopole is not identified in the applicant's submittal. Given the mostly sky -lit views, a shade of light grey would be appropriate — not the brown typically preferred for monopoles in wooded areas. The dish antennas, at 3' and 6' in diameter, will be obvious and will not blend in with the monopole as panel antennas can. .ice ALr Figure 4: View faring south on 51" Street in the vicinity of Pinehurst Ct. Figure 6: View facing south on 51" Street, a short distance south of Stagecoach Road_ Figure 5: View facing south at intersection of 5l" Street and Stagecoach Road. Figure 7: Typical view from the west side of 51r Street_ Figure 8: View facing north on 5111 Street at southern intersection with Stagecoach Road - Figure 10: View north on 511 Street along CGB5 frontage. Figure 9: View north on 5'1 Street nearCOB5 entrance. Figure 11: View north from 511 Street looking towards COB5 office building. Figure 12: View from eastbound lane of 164 facing south. Figure 13: View from westbound lane of 164 facing south. IT lip 4_1 r FV . �• 5thtre Place opts. ` av�.Iir ass _ -01 _. 10 19 ie I Y ,► y g 8 VO IF Figure 14: Photo locations. VI NOTE REGARDING ARB ADVISORY REVIEW Section 30.6.9 of the zoning ordinance states that public health and safety shall prevail when any condition of a Certificate of Appropriateness conflicts with public health or safety. However, the ARB's role in this review is limited to determining visual impacts on the Entrance Corridor. The Board of Supervisors will make a final determination on the proposal considering the ARB's advice, issues of public health and safety, and all other recommendations and related information that body receives. SUMMARY OF RECOMMENDATIONS Regarding the Certificate of Appropriateness for the ground equipment and base station: Staff recommends that the ARB forward the following recommendation to the Agent: Since the ground equipment will not be visible from the EC, the ARB has no objection to the ground equipment and base station as proposed. Regarding visibility of the monopole: Staff recommends that the ARB forward the following recommendation to the Agent: 1. Given the degree of visibility displayed at the balloon test, the proposed location of the facility does not sufficiently minimize the visibility of the monopole from the 5t' Street and I-64 Entrance Corridors. Negative visual impact is anticipated. 2. A shade of light grey is recommended for the monopole. 10 ATTACHMENT A Applicant's project description Regional P'25 Radio Infrastructure Protect (Charlottesville — UVA — Albemarle County Emergency Communications Center)- C0135 site Purpose: The Emergency Communications Center (ECC) operates a regional 800 MHz public safety land mobile radio system on behalf of the County of Albemarle, the City of Charlottesville, and the University of Virginia. The system provides interoperable, mission -critical communications to nearly 3,000 regional public safety and public service users. As part of an enterprise -wide project to replace end -of -life infrastructure and improve public safety communications coverage and reliability, the ECC is seeking to ,add 123-foot monopole tower (including foundation) at the Albemarle County Office Building on Fifth Street (COBS). Albemarle County Office Building -5h St. (COBS). The COBS facility is a fundamental equipment location for the new regional (Charlottesville, UVA, Albemarle) P25 Radio system currently under construction. COBS is already the regional ECC's backup dispatch and equipment facility, including 9-1-1, data systems, and dispatch equipment and space. This radio system is designed with fully redundant capabilities, including redundant critical components and dispatch infrastructure at COBS. In the case of a critical event, dispatch could be performed at the COBS facility. For reliable connectivity to the COBS facility, microwave radio is necessary. A tower is required at the COBS location for mounting the microwave antennas at the proposed heights. This provides a critical link to this facility to maintain continuous communications with the overall P25 system. TABLE A This report is based on the following submittal items: Sheet # Drawing Name Latest Drawing Date T1.1 Title Sheet 5/7/2019 C1.1 Site Plan 5/7/2019 C 1.2 Compound Plan 5/7/2019 C2.1 Elevation & Antenna Details 5/7/2019 C3.1 Cable Bridge Details 5/7/2019 C4.1 Details 5/7/2019 G1.1 Grounding Diagram 5/7/2019 G2.1 Grounding Riser 5/7/2019 G3.1 Grounding Details 5/7/2019 G4.1 Grounding Details 5/7/2019 GNI.1 General Notes 5/7/2019 GN2.1 General Notes 5/7/2019 GN3.1 General Notes 5/7/2019 14-18 Roof Protection Plan 4-2-19 Project Description 12