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HomeMy WebLinkAbout06-10-2021 Board of Adjustments Agenda Packet Public Meeting Notice Committee: Board of Adjustment and Appeals Date & Time: Thursday, June 10, 2021 at 5:00PM Place: City Council Chambers 161 North Section St. Fairhope, AL 36532 Subject: Special Called Meeting to discuss a continuance of Case BOA 21.07, a request for a Public Utility located at 8300 Morphy Ave. City of Fairhope Board of Adjustment and Appeals 5:00 PM City Council Chambers - Special Called Meeting - June 10, 2021 1. Call to Order 2. Consideration of Agenda Items: A. BOA 21.07 Request of Fairhope Public Utilities for a Special Exception to allow a Public Utility for property located at 8300 Morphy Avenue. PPIN #: 108954 3. Old/New Business 5. Adjourn NATHANIEL AV SCARLETT AV MORPHY AV SALEM STBISHOP RDTROYER BOOTHE RDCity of FairhopeBoard of Adjustment and Appeals June 10, 2021 ¯ SCARLETT AV NATHANIEL AV MORPHY AV SALEM STBOA 21.07 - Morphy Ave Electrical Substation Legend COF Corp. Limits B-2 - General Business District B-4 - Business and Professional District PUD - Planned Unit Development R-3 - High Density Single-Family R-3PGH - Patio/Garden Single-Family R-4 - Low Density Multi-Family R-5 - High Density Dwelling Residential R-A - Residential/Agriculture District COF Planning Jurisdiction ¯ ¯ ^ Project Name:Morphy Ave Electrical SubstationApplication Type:Special ExceptionVariance Type:Public UtilityJurisdiction:City of FairhopeZoning District:R-3PGHPPIN Number:108954General Location:South side of Morphy Ave, approximately 250' east of Salem St.Surveyor of Record: Engineer of Record:Sawgrass EngineeringOwner / Applicant:City of FairhopeRecommendation:ApprovalPrepared by: Hunter Simmons ,,,. • --l. E - -<"~ l 1 BOA 21.07 8300 Morphy Ave Electrical Substation June 10, 2021 Summary of Request: Fairhope Utilities, is requesting a public utility use which is not allowed by right but by special exception in Fairhope’s Zoning Ordinance for the property located at 8300 Morphy Ave. The subject property is zoned R-3PGH. The applicant desires to install a new electrical substation that will allow for Fairhope Utilities to better serve its customers. A public hearing was held at Board of Adjustment and Appeals meeting on May 17, 2021; proposed plans were presented. The Board unanimously voted to table Case BOA 21.07 until a special called meeting on June 10, 2021. Within the motion, the following items were requested: 1. Revised site plan showing wetlands, if any; show elevations on site plan 2. Consideration for moving site to the east if possible 3. Rearrange retaining wall to create a larger buffer, if possible 4. Landscape plan Comments A summary addressing the design team’s response to each of the above concerns are listed below. Full plans are also included within the packet. Condition 1: Revised site plan showing wetlands, if any; show elevations on site plan Wetlands Sciences, Inc. conducted a site investigation and provided a report with their findings, which is attached. A small area (0.004 acres) of wetlands was found on the southwest corner of the site. 30’ wetlands buffers, as well as 50’ stream buffers were added the Geometry Plan (see Figure 1 blow). All proposed improvements are outside of the buffers. Figure 1: Wetland and Stream Buffers o.'I PROPOSED 2 BOA 21.07 8300 Morphy Ave Electrical Substation June 10, 2021 Condition 2: Consideration for moving site to the east, if possible. The proposed fence and gravel are 10’ off the eastern property line. Moving the site further hinder the ability to provide a landscape screen on the eastern edge of the property. Condition 3: Rearrange retaining wall to create a larger buffer, if possible. The proposed retaining wall along the western property line has been moved to the east to allow a clear space from the face of the wall to the property line of 13 feet for plantings and screening for the adjacent property owners. Figure 2: Plan as proposed at May 17 BOA Meeting. Figure 2 above illustrates the originally proposed geometry plan and Figure 3 below illustrates revisions. In addition to moving the retaining wall to allow more screening, the site was also moved northward, and drainage was redesigned, to save large live oaks and preserve mature plant specimen along the west boundary of the property. Figure 3: Revised plan. Condition 4: Landscape Plan. Landscape plans were provided by Jennifer Fidler and shown below in Figure 4. Additional site visits confirmed inventories of existing tree species. As the plans illustrate with tree protective measures, many of the trees to be removed are now planned to be saved. 3 BOA 21.07 8300 Morphy Ave Electrical Substation June 10, 2021 Figure 4: Landscape Plan The installation of both the underground and overhead lines shown in Figure 5 will require removal of many of the existing pecan trees. 21 credits are available for the protection of the existing trees. Our tree ordinance requires 33 trees to be planted due to the removal of existing trees. 82 trees are provided within the landscape plan above, 27 overstory trees. Figure 5: Proposed overhead and underground electrical. In addition to the comments above, citizens and board members also asked how the property at 8300 Morphy Ave was selected. At the request of Mayor Sullivan, Lance Junkin, president of Stewart Engineering, provided the attached letter summarizing the five-year process that led to the selection of the property at 8300 Morphy Ave. The following information, which was provided within the previous staff report, is included within this packet for convenience: 1. Electric Department Narrative 2. Letter and Documentation to address noise and EMF from Stewart Engineers. . 1..\,.,o k. -•\t(""D- • " : ~'""' ...... ..... # • I • 4 • n,tl,t-~~--,~~-4w,i.-, ;,{...i'), ,,., -..--...-1o ............... """"''""''"' '"'"""'"'"""' .... ,,,,.,,,,,,,,, .. , .. •.•.•,:.::,-.•,:,:,:,·,'.',','+'','·' '·' ','' 4 BOA 21.07 8300 Morphy Ave Electrical Substation June 10, 2021 3. Feedback from adjacent property owners. Staff Recommendation: Staff recommends APPROVAL of the appeal for public utility facility uses at 8300 Morphy Avenue with the following conditions: 1.) A 20’ landscape buffer is provided along Morphy Ave and will be shown on the plans. Dear Mayor Sullivan, In early 2016 Stewart Engineering was employed by the City of Fairhope to perform an Electrical Substation Capacity Analysis. This Analysis was completed and presented to the Mayor and Electrical Superintendent in June 2016. This was a detailed Analysis, with many specific recommendations. One of the key concerns from the start was at the Fairhope Avenue Substation, located just under the water tank, behind the Intermediate School. This Substation was / is the most heavily loaded City Electrical Substation. It was loaded to 106% of base capacity at the 2015 peak. The small site made it impossible to increase the Substation in the way that was really needed, which was to both increase transformer capacity and increase feeder quantity. A future second transformer, when needed, could never be installed at this site. Therefore, the initial plan was to simply increase the size of the power transformer. At that time, the possibility of installing a new Substation in this portion of town seemed “out of reach”, and was therefore initially discounted. However, as time went along, the plan to simply increase the size of the existing power transformer seemed less and less desirable. Yet another point of anxiety surfaced when the water tank was to be repainted. The scaffolding, hanging chains, huge paint “curtains” caused serious electrical concerns from both a safety perspective, and from the perspective of possibly causing an arcing fault that could totally destroy the Substation. There was a great deal of deliberation and discussion by the Fairhope Operations Manager, the Electrical Superintendent, and Stewart Engineering. All agreed that, in the long term, it would be much wiser to construct a new Substation, on a new site. In 2019 the City Council and Mayor agreed that a new Distribution Substation along Morphy Avenue was the best path forward, and instructed Stewart Engineering to move forward with that design. The specific rationale behind a Morphy Avenue site was / is as follows: 1.The electrical loading in the Eastern part of town is heavy. Again, Fairhope Avenue Substation isthe most heavily loaded Substation in Fairhope. A new Substation, on a larger lot, could be builtto accommodate a future second power transformer, to be installed later as load growthwarrants. This was / is not possible at the existing Fairhope Avenue Substation location.2.The City’s existing 46 KV Sub-Transmission line begins at Twin Beech Transmission Substation,extends up to Morphy, then East over to Bishop before turning North again to feed FairhopeAvenue and Volanta Avenue Substations. Since it runs along Morphy Avenue, it can be readilyaccessed to serve a new Substation along Morphy Avenue, without the need to construct alonger section of very expensive, 46 KV Sub-Transmission Line.3.Main 12 KV Distribution lines, fed from both Fairhope Avenue Substation and Nichols AvenueSubstation currently run on all four sides of the block, between Morphy and Fairhope Avenues,between Greeno and Bishop Roads. This makes it easier and less costly to integrate a newSubstation, at this location, into the Distribution System.4.By installing the Substation along Morphy Avenue, close to the City’s electrical load center,system electrical line losses will be lower as compared to being installed at a location remotefrom the load center. Letter from Stewart Engineering explaining the site selection process. Mayor, the present proposed site (8300 Morphy Avenue) is not the only site that could accommodate a new Substation. However, as you know, at least 5 other sites were seriously considered. The present proposed site “rose to the top”, meeting all of the above criteria. And it was available to purchase by the City at a reasonable price, which is no small hurdle to clear in the City of Fairhope. Another strong benefit of this lot, as compared to some of the others considered, is that the cost to prepare the lot for construction at this location is very reasonable. We realize that this is a rather long explanation, but the process has truly been in-depth and thorough. In the long run, a new Electrical Distribution Substation at 8300 Morphy Avenue would serve the City and its residents well, for many years. This location would result in reasonable Sub-Transmission and Distribution construction costs, and lower line losses due to proximity to the load. These benefits will help the City keep their Retail Electrical Rates more competitive for the long term. Additionally, a new Substation at this location would improve the Electric Department’s ability to maintain electrical service to all customers during scheduled (or unscheduled) outages at other City Electrical Substations, thereby improving electrical service reliability to all. If you have any further questions, please don’t hesitate to reach out. Sincerely, Lance Junkin, P.E. President of Stewart Engineering, Inc. 3308 Gulf Beach Highway | Pensacola, Florida 32507 | 850.453.4700 | craig@wetlandsciences.com       May 21, 2021    Jaye Robertson, PE  Sawgrass Consulting, LLC  30673 Sgt. E.I. “Boots” Thomas Drive  Spanish Fort, AL  36527    Re: Wetland Assessment Report   8300 Morphy Avenue, Fairhope, Baldwin County, Alabama   WSI Project #2021‐425      Dear Mr. Robertson,    As requested, Wetland Sciences, Inc. has completed a field wetland delineation at 8300 Morphy Avenue  in Baldwin County, Alabama.  The property is identified by the Baldwin County Revenue Commission with  the Parcel Identification Numbers: 05‐46‐05‐16‐0‐000‐028.674.  This assessment included an analysis of  plant communities, soils, and indirect hydrologic indicators.  During this determination, Wetland Sciences,  did identify wetlands which fall within the regulatory jurisdiction of the US Army Corps of Engineers  (Corps) under 33 CFR 320‐330.  See attached wetland sketch – Exhibit A).  The following is a summary of  our findings.     The assessment was completed by a thorough pedestrian survey covering 100% of the subject property.  I  personally inspected the property on May 19, 2021.  Wetland Sciences, Inc. utilized the Corps of  Engineers Wetland Delineation Manual, 1987 and Regional Supplement to the Corps of Engineers  Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region, 2010 to determine the federal  wetland jurisdictional boundary.      The wetland boundaries shown on the attached sketch were delineated in accordance with the Regional  Supplement to the Corps of Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region  (Federal – Corps).  The wetland boundary was identified in the field by progressively locating points along  the upland/wetland boundary at 15‐20‐ft. intervals or corresponding with directional changes with the  boundary.  Each point was identified and located by an experienced wetland scientist.  Pink flags were  placed at each point clearly marked “Wetland Delineation”.  Each flagged point also contains specific  alpha numeric designator for later tracking of its location.  Wetland Sciences, Inc. used a Trimble Geo7x  GNSS system to locate each point.  Data was collected using Trimble’s TerraSync Professional Software  with further data refinement using Trimble’s Pathfinder Professional Software.  Please keep in mind that  there are many variables that affect the accuracy of the GPS data used to generate the attached sketch.   This sketch should be considered approximate unless verified by a survey or other appropriate means.      The boundary of jurisdictional wetland as depicted in the exhibits of this report are not final or “binding”  until such time as they are confirmed by the USACE through field inspection. As such, the depicted  wetland boundary may be subject to minor changes upon such inspection/approval.    WET~ND S ((_~ 7T". r~ ll'lf" ct__:, Pr ', S INCORPORATED 3308 Gulf Beach Highway | Pensacola, Florida 32507 | 850.453.4700 | craig@wetlandsciences.com Impacts to wetlands and/or surface waters will require permits from the agencies referenced above.   Wetland Sciences, Inc. is keenly aware of this process and can facilitate if necessary.  This is a process that  is better explained over the telephone or in a person to person meeting.      Finally, I have included a statement of our firm for services rendered and expenses incurred associated  with this effort.  If you find this statement in order, please place it in line for payment.      If you have any questions, please do not hesitate to contact me at (850) 453‐4700.    Respectfully,  WETLAND SCIENCES, INC.    Craig Martin  Sr. Scientist                                                             cvt 1 2 345 6 7 8 9 10 NOTE: This is not a survey. All data within this map are supplied as is, without warranty. This product has not been prepared for legal, engineering, or survey purposes. Users of this information should review or consult the primary data sources to ascertain the usability of the information. r -I Area Subject to wetland delineation L----±2.40 AC c::J Corps Wetlands Identified by WSI ±.004 AC ~ Uplands ____ ±2.396 AC T~ND \ C\ _ _:, J[ _ rr; ~ Jf «" ~ r.=5, S INCORPORATED PROJECT NAME: 8300 Morphy Avenue ENVIRONMENT AL CONSULT ANTS 1-W-ET-LA-ND-SK_ET_CH-----------1 3308 GULF BEACH HIGHWAY PROJECT NO.: 2021-425 PENSACOLA, FLORIDA 32507 TEL: 850.453.4700 DRAWN BY: AJN DATE: 05/21 /20 21 CRAIG@WETLANDSCIENCES.COM SHEET: 1 OF 1 MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)EXIST CONDITIONS & DEMO CHECKED BY: JHR SHEET: 03 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 1 inch = 30 feet GRAPHIC SCALE 6001530 .C.T.1.F. O P.K.N.S. O R.R.S.S. -0- E----- ~ QI] -E Cy R.O.W CL ~ X LEGEND CAPPED REBAR FOUND CRIMPED TOP IRON FOUND IRON PIPE FOUND OPEN TOP IRON FOUND PIG TAIL IRON FOUND REBAR FOUND RAILROAD SPIKE FOUND REBAR IRON FOUND 1/2" CAPPED REBAR SET "CA 1007-LS" RAILROAD SPIKE SET CONCRETE MONUMENT FOUND POWER POLE GUY WIRE AIR CONDmONER CATV PEDESTAL FlRE HYDRANT WAlER METER WATER VALVf. EXIST. FENCE EXIST. PROPERTY LINE EXIST. DRAINAGE SWALE EXIST. POWER SATELLITE DISH EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTERLINE llENOIES REMO'/;L DENOTES TREE REMOYAL "' q o._ 0 w, 'II"' ,o ,I 10:: ::11 II' II' II I I~ I' I I' 111 ii, ) I \ \ I \ \ REQ'D: REMOVAL OF EXIST. I \ TREE (TYP.) (20 TOTAL) I \ SWEET GUM -2 ..__/ PLUM -1 ( \ CEDAR -1 PECAN -16 I \ / \ \ \ \ awgrass ENGINEERING -SURVEYING -CONSTRUCTION MANAGEMENT 3' ci REQ'D: REMOVAL OF EXIST. WOOD RAMP (BY 01HERS) REQ'D: REMOVAL OF EXIST. CONC. (14 S.Y.) (BY 01HERS) / REQ'D: REMOVAL OF EXIST. GRAVEL DRIVE (1,310 S.Y.) ( / / EXISTING WETLANDS (0.004 (IDENTIFIED BY 01HERS) REQ'D: REMOVAL OF EXIST. BUILDING (2,082 S.F.), UTlLJTlES, SATELLITE DISH, & WOOD RAMP (BY 01HERS) MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)X0 X1X2 X3H1H3H2X0 X1X2 X3H1H3H2GEOMETRY PLAN CHECKED BY: JHR SHEET: 04 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 1 inch = 30 feet GRAPHIC SCALE 6001530 .C.T.1.F. el.P.F. .0.T.I.F. O P.K.N.S. O R.R.S.S. ■C.t.4.F. -0- E----- QI] EOP R.O.W CL LEGEND CAPPED REBAR FOUND CRIMPED TOP IRON FOUND IRON PIPE FOUND OPEN TOP IRON FOUND PIG TAIL IRON FOUND REBAR FOUND RAILROAD SPIKE FOUND REBAR IRON FOUND 1/2• CAPPED REBAR SET •CA 1007-LS• RAILROAD SPIKE SET CONCRETE MONUMENT FOUND POWER POLE GUY WIRE CATV PEDESTAL FlRE HYDRANT WAlER METER WAlER VALVE EXIST. FENCE EXIST. PROPERTY LINE PROPOSED CENTERLINE EXIST. DRAINAGE SWALE EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTERLINE NO. 57 SJONE 8 0"' Ill. Ill 0 ~ II II ~ II II II o._ 0 w, \ I \\ I I REQ'D: CONCRETE DRIVEWAY (7" lHICK) (REINFORCEb) ~~;~fE6Rivci:°~:CT?(j~) (146 S.Y.) / --''" / / / / \ REQ'D: 20' WIDE GRAVEL DRIVE (1,056 S.Y.) / REQ'D: 1D TONS OF CLASS II RIP-RAP WITH FILTER BLANKET / ····... ?-~•~lHICK) awgrass ENGINEERING -SURVEYING -CONSTRUCTION MANAGEMENT ~ ! \__ / SS II RIP-RAP WllH FILTER BLANKET o._ 8 ~ ci [ (2.0' THICK) 1 t I REQ'D: a• lHICK NO. STONE GRAVEL PAD AR (2,886 S.Y.) (BY OlHER ll••ll Bi ~ 0 °" REQ'D: 40 LF OF RETAINING WALL (MAX. 6 FT HIGH) I _/ ' REQ'D: (605 L.F.) 8 FT CHAIN LINK FENCE (BY OTHERS) t..-111111 - MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)X0 X1X2X3H1H3H2X0 X1X2X3H1H3H2GRADING PLAN CHECKED BY: JHR SHEET: 05 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 1 inch = 30 feet GRAPHIC SCALE 6001530 z -0- E--- ~ EOP R.O.W CL ~ ~ LEGEND POWER POLE GUY WIRE CATV PEDESTAL FIRE HYDRANT WATER METER WATER VALVE EXIST. FENCE EXIST. PROPER1Y LINE PROPOSED CENTERLINE EXIST. DRAINAGE SWALE EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTERLINE NO. '51 STONE "' 0 "' I I I I i II i 1 1 i II ~ .. i 11 .~,,, I I II CL 0 w, \ I I I ~ ,, \ \ \ I I ( I \ \ \ \ \ F SS II -p • WITH FILTER BLANKET t I (2.0' THICK) ·' ,,t ,l; ·.imr~ 81 awgra1ss G SURVEYING -CONSTRUCTION MANAGEMENT REQ'D: 40 LF OF RETAINING WALL ( I R~Q'D: PROPOSED DETENTIO~v POND OJ'\/ / / / / ( ====:;p :z: ~ MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)X0X1X2X3H1H3H2X0 X1 X2X3H1H3H2STRUCTURE SCHEDULE NAME RIM EL INV IN INV OUT DRAINAGE PLAN CHECKED BY: JHR SHEET: 06 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 1 inch = 30 feet GRAPHIC SCALE 6001530 -0- E--- ~ EOP R.O.W CL r==7 ~ LEGEND POWER POLE GUY WIRE CATV PEDESTAL FlRE HYDRANT WA.lER METER WATER VAJ...VF. EXIST. FENCE EXIST. PROPERTY LINE PROPOSED CENTERLINE EXIST. DRAINAGE SWALE EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTERLINE NO. 57 STONE a; C! I I ~ ,, \ I \ \ \ / \ I \ ( \ / \ 3' 0 0 ~ ~ awgrass ENGINEERING -SURVEYING -CONSTRUCTION MANAGEMENT )REQ'D: 2. 7 TONS OF CLASS II RIP-RAP WITH FILTER ~ANKET (2.0' THICK~0 / 3' C! HDWL-2 HDWL-3 HDWL-4 HDWL-5 HDWL-6 HDWL-7 HDWL-8 INLET-1 INLET-2 INLET-3 INLET-4 113.67 112.00 (P-1) 111.20 109.53 (P-1) 109.10 107.50 (P-2) 107.60 106.00 (P-3) 106.60 105.00 (P-4) 98.60 97.00 (P-5) 98.60 97.00 (P-6) 98.10 96.50 (P-7) 110.58 107.88 (P-2) 108.86 106.21 (P-3) 108.07 103.79 (P-5) 108.06 100.23 (P-6) OUTFALL CONTROL STRUCTURE 97.74 96.64 (P-7) Structure -(25) 105.60 104.00 (P-4) NAME P-1 P-2 P-3 P-4 P-5 P-6 P-7 / Pipe Table SIZE LENGTH SLOPE MATERIAL 18" 94.98' 2.60% 12" 75.85' 0.50% Corrugated HDPE Pipe 12" 41.76' 0.50% Corrugated HDPE Pipe 12" 52.92' 1.89% Corrugated HDPE Pipe 12" 123.29' 5.50% Corrugated HDPE Pipe 12" 46.15' 7.00% Corrugated HDPE Pipe 12" 26.86' 0.52% Corrugated HDPE Pipe t..-111111 - MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)X0 X1X2 X3H1H3H2X0 X1X2X3H1H3H2EROSION CONTROL PLAN CHECKED BY: JHR SHEET: 07 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 1 inch = 30 feet GRAPHIC SCALE 6001530 .C.T.1.F. O P.K.N.S. O R.R.S.S. -0- E----- ~ QI] -E - Cy R.O.W CL LEGEND CAPPED REBAR FOUND CRIMPED TOP IRON FOUND IRON PIPE FOUND OPEN TOP IRON FOUND PIG TAIL IRON FOUND REBAR FOUND RAILROAD SPIKE FOUND REBAR IRON FOUND 1/2" CAPPED REBAR SET "CA 1007-LS" RAILROAD SPIKE SET CONCRETE MONUMENT FOUND POWER POLE GUY WIRE AIR CONDmONER CATV PEDESTAL FIRE HYDRANT WATER METER WATER VALVE EXIST. FENCE EXIST. PROPERTY LINE EXIST. DR.'JNAGE SWALE EXIST. POWER SATEWTE DISH EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTER-LINE II II II II i II ' I I ' ' ' :11~ !11 !11 I I 1, \ I \ I I ~ ,, ( I REQ'D: CONSTRUCTION / ENTRANCE / / .,/ .,/ ~ / I ----y:/ \ ~ EX~~ ----- ~~LINE ~:::._- ..____ ~~ '-..., ~0 "---...,,1 2 ---\-E --E / \ \ I I \ \ \ \ 3' 0 awgrass ENGINEERING -SURVEYING -CONSTRUCTION MANAGEMENT REQ'D: INLET PROTECTION (WATTLE) (TYP.) I t..-111111 - CHECKED BY: JHR SHEET: 11 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: NTSRETAINING WALL DETAILS MORPHY SUB STATION CITY OF FAIRHOPE NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 Five degree (5°) setback (Standard) 10" (254 mm) diameter knob 13 3 8" (340 mm) 15" (381 mm)Setback = 1 5 8" (41 mm) 7 1/2" (190 mm) diameter knob Setback = 3 8" (10 mm)Textured Face13 3 4" (350 mm) 6 3 4" (171 mm)diameter knob Setback = 0" (0 mm)13 3 8" (340 mm)Textured FaceTextured Face13 3 8" (340 mm) 13 3 8" (340 mm) The block-to-block setback available with Redi-Rock is controlled by the size and location of the shear knobs (domes) cast into the blocks. While the 10" (254 mm) diameter knob and the 1 5/8" (41 mm) setback position is the most common configuration, Redi-Rock has three different knob sizes and three different locations available. Move blocks forward during installtion to engage shear knobs (Typical) One degree (1°) setback (Specialty)Move blocks forward during installtion to engage shear knobs (Typical) Available with: x 28" (710 mm) blocks, 41" (1030 mm) blocks, and 60" (1520 mm) blocks x 28" (710 mm) PC blocks (shown here) and 41" (1030 mm) PC blocks 2" (51 mm) Zero (0°) setback (Specialty)Move blocks forward during installtion to engage shear knobs (Typical) 4" (102 mm) 4 12" (114 mm) 2" (51 mm) Available with: x 28" (710 mm) blocks, 41" (1030 mm) blocks, and 60" (1520 mm) blocks x 28" (710 mm) PC blocks (shown here) and 41" (1030 mm) PC blocks Available with: x 28" (710 mm) blocks, 41" (1030 mm) blocks, and 60" (1520 mm) blocks x 28" (710 mm) PC blocks (shown here) and 41" (1030 mm) PC blocks 4 12" (114 mm) 4 12" (114 mm) BLOCK-TO-BLOCK SETBACK OPTIONS Pipe to extend 6" (152 mm) to 8" (203 mm) from back of block for connection to perforated wall drain Solid PVC or HDPE drain pipe cast into block Diameter = 3" (76 mm) or 4" (102 mm) as specified on plans Place Solid PVC or HDPE drain pipe through notched hole and grout pipe in place Notch ± 2.5" x 5" (64 mm x 127 mm) hole in side of a Redi-Rock block Connect to perforated wall drain This drawing is for reference only. Determination of the suitability and/or manner of use of any details contained in this document is the sole responsibility ofthe design engineer of record. Final project designs, including all construction details, shall be prepared by a licensed professional engineer using the actualconditions of the proposed site. Wall Drain Weep Hole Options Custom Pipe Cast into Block Field Installed Pipe These generic pedestrian guard and fence details show a few potential options for their installation on the top of a Redi-Rock retaining wall. It is the design engineer's responsibility to fully design and detail the connection of the guard posts to the retaining wall blocks and assure acceptable resistance to the applied forces. Redi-Rock blocks are plain concrete, without steel reinforcement. Flange base plate attachedto top block with adhesiveset anchor bolts Field core intoTop block Grout fence or railingpost in place Reinforced concrete sidewalk Fence or railing postCore and grout or connectwith flanged base plate This drawing is for reference only. Determination of the suitability and/or manner of use of any details contained in this document is the sole responsibility ofthe design engineer of record. Final project designs, including all construction details, shall be prepared by a licensed professional engineer using the actualconditions of the proposed site. Fence or Pedestrian Guard Connection Options Grout fence or railingpost in place Field core into blockin second course Grouted Connection (1 Block) Flange Bolted Connection Grouted Connection (2 Blocks) Moment Slab Connection NON-WOVEN GEOTEXTILE FABRIC (IF SPECIFIED) CONVERT TO SOLID PIPE BEFORE OUTLETING UNDER WALL PERFORATED DRAIN GRAVITY FLOW TO OUTLET AROUND ENDS OF WALL AND EVERY 50' ON-CENTER OR AS SPECIFIED OPEN-GRADED CRUSHED STONE LEVELING PAD AASHTO NO. 57 STONE TO EXTEND AT LEAST 12" BEHIND WALL CONCRETE or DENSE GRADED GRAVEL LEVELING PAD PERFORATED DRAIN GRAVITY FLOW TO OUTLET AROUND ENDS OF WALL AND EVERY 50' ON-CENTER OR AS SPECIFIED CONVERT TO SOLID PIPE BEFORE OUTLETING THROUGH WALL UNREINFORCED AASHTO CLASS B CONCRETE WITH A MIN. 1,500 psi 28 DAY COMPRESSIVE STRENGTH, or DENSE GRADED GRAVEL (IMPERMEABLE) LEVELING PAD OPTIONS FOR RETAINING WALL BLOCKS AASHTO NO. 57 STONE AASHTO NO. 57 CRUSHED STONE LEVELING PAD 6" MAX. AS SPECIFIED 12" MIN. IN FRONT OF BLOCK 12" MIN. IN BACK OF BLOCK 6" MIN. IN BACK OF BLOCK 6" MIN. IN FRONT OF BLOCK Drainage aggregate Leveling pad (As specified by Engineer) Drain (As specified by Engineer) (L) (Length of geogrid strip - Typical) 12" (305 mm) wide strip of geogrid wrapped through block and extending full length (L) back into reinforced fill zone (Typical) Move blocks forward during installation to engage shear knobs (Typical) 28" (710 mm) PC Middle block (Typical) Grade to drain surface water away from wall Non-woven geotextile fabric (If specified by Engineer) Reinforced Soil Fill vertical core slot and wedge between adjacent blocks with drainage aggregate (Typical) Retained soil Note: One degree or zero degree batter angle walls are available using blocks with 7 12" (190 mm) or 6 3 4" (171 mm) knobs (Specialty items) 28" (710 mm) PC Bottom block Non-woven geotextile fabric Only use strips of Mirafi geogrid that have been factory cut and are certified for width and strength by TenCate Mirafi. Typical Reinforced Wall Section This drawing is for reference only. Determination of the suitability and/or manner of use of any details contained inthis document is the sole responsibility of the design engineer of record. Final project designs, including all construction details, shall be prepared by a licensed professional engineer using the actual conditions of theproposed site. Setback = 1 5 8" (41 mm) Exposed wall (Height varies with design) Bury depth NOTE:x THE DRAWING DETAILS ON THIS SHEET FOR THE RETAINING WALLS ARE NOT FOR CONSTRUCTION. THE CONTRACTOR SHALL PROVIDE AN ENGINEERED AND STAMPED DRAWING SET, PREPARED BY AN ENGINEER CURRENTLY LISCENSED IN THE STATE OF ALABAMA, FOR THEDESIGN OF THE RETAINING WALLS AND DRAINAGE PERTAINING TO THE RETAINING WALLS. THESE DRAWINGS SHALL BE SUBMITTED TO THE ENGINEER OF RECORD AS SHOP DRAWINGSFOR REVIEW AND APPROVAL BEFORE CONSTRUCTION BEGINS. I I I (5c batter angle on wall) N.T.S. N.T.S. I (5 •bsttersngleonwaJ/) I ~m r 1-------l I I i____t==1 ,---,----I ~ r 1-------l N.T.S. I N.T.S. N.T.S. awg1rass ENGINEERING -SURVEYING· CONSTRUCTION MANAGEMENT CHECKED BY: JHR SHEET: 10 OF 11 DATE: MAY, 2021 DRAWN BY: BAT SCALE: NTSCIVIL CONSTRUCTION DETAILS MORPHY SUB STATION CITY OF FAIRHOPE NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 13' PROPERTY LINE PROPOSED RETAINING WALL LEXIST. GROUND ------------ * STRUCTURAL FILL REQUIREMENTS Structural fill should consist of dean sand wi!h less than 12% passing the No . 200 mesh sieve . The lnttial lift of slruclllral fill should be placed &, a 18-lnch-thicl< lift lhal is compacted to 118% ASTM D-6118 standard Proctor density (lop 6 indles 100% standard P!OClor density). The remaining slructural fill required to achieve final subgrade elevations shou ld d in J $-inch mu loose lifls and should be compae1ed lo 100% ASTM D-698 stan or density at molslure contents within +/-3% ot the JTN1tellars optrmal mcis,ure co Structural fill should be J>faced in 8-inch lifts andl compacted to at least 98% ASTM D-698 standard density. Proper p!acernenl of the strucllJral fill lay,,~ wil be crttical in the porformaoce of tho f011ndalions . Structural til l stiould meet tho follow;ng requ irements : I) Exhibtt SM ctasslficalion accordirlg to the Unified Soil Classification System 2) Have a minimum of 15% to maximum 25% soil fines passing the No. 200 sieve 3) Have a maximum Liquid Linll (LL) of 25% 4) Have a Plaslicily Index (Pl) less than 3% 5) Have • minimum standard Proelor <ASTM 0<-698) maxinum dry density of 11 O pcf 6' STRUCTURAL FILL SEE WALL DETAILS FENCE POST SLOPE VARIES 1 O" A-2OOO PERFORATED PIPE ---@ 0.5% SLOPE (SEE DETAIL) 8" THICK CRUSHED GRAVEL (SEE SOILS REPORT FOR FILL REQUIREMENTS AND CALL OUT) TYPICAL SECTION N.T.S. AGGREGATE DRIVEWAY N.T.S. awg1rass ENGINEERING· SURVEYING· CONSTRUCTION MANAGEMENT MARIFI N-140 SEPARATION FABRIC LEGEND FENCE POST 2' 8" THICK CRUSHED GRAVEL (SEE SOILS REPORT FOR FILL REQUIREMENTS AND CALL OUT) 7 OZ NON-WOVEN GEOTEXTILE FILTER FABRIC 8" UNDERDRAIN DETAIL N.T.S. W6X6 WELD WIRE REINFORCEMENT STANDARD DUTY CONCRETE SECTION N.T.S. 6" THICK CONCRETE DRIVEWAY, REINFORCED 6" ALDOT SECTION 825 -CRUSHED AGGREGATE BASE COURSE (100% STANDARD DENSITY) A-2-4 STRUCTURAL FILL (TOP 6" COMPACTED TO 100% STANDARD DENSITY) MORPHY AVENUE (60' R.O.W)NATHANIEL AVE (40' R.O.W)X0 X1 X2 X3H1H3H2X0 X1X2 X3H1H3H2GEOMETRY PLAN CHECKED BY: JHR SHEET: 4 OF 9 DATE: MAY, 2021 DRAWN BY: BAT SCALE: 1" = 30' MORPHY SUB STATION CITY OF FAIRHOPE1 inch = 30 feet GRAPHIC SCALE 6001530 NUMBER:REVISION:DATE: 30673 Sgt. E. I. "Boots" Thomas Drive, Spanish Fort, AL 36527 Phone: (251) 544-7900 .C.R.F. •C.T.I.F. .O.T.I.F. .P.K.N.F. 0 C.R.S. 0 P.K.N.S. 0 R.R.S.S. -0- E--- R.O.W CL r-:7 ~ LEGEND CAPPED REBAR FOUND CRIMPED TOP IRON FOUND IRON PIPE FOUND OPEN TOP IRON FOUND "PK• NAIL FOUND PIG TAIL IRON FOUND REBAR FOUND RAILROAD SPIKE FOUND REBAR IRON FOUND 1/2• CAPPED REBAR SET •CA 1007-LS• "PK• NAIL SET RAILROAD SPIKE SET CONCRETE MONUMENT FOUND POWER POLE GUY WIRE CAW PEDESTAL FIRE HYDRANT WATER METER WATER VALVE EXIST. FENCE EXIST. PROPERTY LINE PROPOSED CENTERLINE EXIST. DRAINAGE SWALE EXIST. PAVEMENT EXIST. RIGHT-OF-WAY CENTERLINE NO. 57 STOt£ 'I I 3; ,o ,I 10:: II I II II' I REQ'D: MATCH EXIST/ ASPHALT GRADE I \ \ I \ I REQ'D: CONCRETE DRIVEWAY (REINFORCED) ( (146 S.Y.) / / / / \ \ \ \ •awgrass ENGINEERING -SURVEYING -CONSTRUCTION MANAGEMENT \ \ \ \ / REQ'D, 20' \\!DE GRAVEL DRIVE (1,056 S.Y.) ) ' REQ'O: 18" NO. 57 STONE (2,948 1,Y-) (BY OTHERS) I \ 1' \ I CE \ \ :'" \ J I / I o·b: PROPOSED/ / TFALL CONTRO~ S~UCTURE / I / ( " " " " I\ 1 Transformer Noise Lokesh Solanki VTC Engineering Department Introduction: • What is sound? Sound is an air pressure disturbance that human ear can ‘hear’. Speech produces sound and disturbances produced by practically everything that moves. the frequency of the sound wave is perceived as pitch and amplitude is perceived as loudness. When the sound in unwanted, it becomes “Noise”. Transformer s in operation emit noise, the magnitude of noise increases with its size in MVA and its voltage class. Sound level for transformers is specified in NEMA TR1. • How it is produced? Transformer core noise is caused by a phenomenon called magnetostriction. In very simple terms this means that if a piece of magnetic sheet steel is magnetized it will extend itself. A transformer is magnetically excited by an alternating voltage and current so it becomes extended and contracted twice during a full cycle of magnetization. The frequency is 2X of the frequency of the voltage. A transformer core is made from many thin sheets of special electrical steel. It is made this way to reduce losses due to circulating eddy currents, and the consequent heating effect. If the extensions and contractions described above are taking place in various directions depend upon the clamping of the laminations, each sheet can nonuniformly behave over its length and width. This ‘writhing’ and twisting motion produces harmonics of the fundamental frequency up to the 16th harmonic. These extensions are a few micro inches dimensionally, however, sufficient to cause a vibration as noise. This is the core noise. Apart from the core noise, transformer windings contract and expand with the current. The frequency of winding noise is that of the current. The noise generated by core and winding is transmitted to the tank wall via the mechanical structure and through the oil. The magnetic shields, if used, will also vibrate with the magnetic flux and create noise. During operation, transformer generate heat which is dissipated by radiators, fans are used to enhance cooling. The fan motor and blades, causing additional noise. The fan noise is added to transformer noise and total noise of transformer during operation increased. • What is the significance of sound to the quality and reliability of transformer? The transformer noise is mainly due to vibration in the core laminations due to magnetostriction . As we all know vibration is not good for any device. The effect of vibration in transfor mer is as bad as of any rotating equipment. More noise means more vibration and more vibration means more abrasion of transformer insulation. Vibration also cause looseness in hardware. Insulation ONE SOUAC£ -ONE COMMITMENT Primary winding ........ Second•ry winding Hilurm 2 abrasion will lead to coil failure and lose hardware leads to increased vibration and increased insulation abrasion, and loosening of electrical connections. How to mitigate transformer Noise? • In order to mitigate transformer noise, it is essential to know the amount of noise generated by transformer. With wide range of transformer design and number of transformer tested designed and tested for noise level, VTC/GTC has developed an empirical formula to estimate noise level generated by transformer during operation. Transformer Noise = K1 lg W + K2 B + K3 [dB] …………….…. (1) Where, W = Core weight, B = Flux Density and K1, K2, K3 = coefficients and constants These can be evaluated with large amount of data and then used to predict the noise from a transformer. Using various design considerations as explained below the overall transformer noise is reduced at design stage. • Reduction of noise from Core: a. No-load sound level of core mainly depends on Magnetostriction and magnetic forces. The magnitude of Magnetostriction could be reduced by lowering flux density. The stud ies show that reducing induction by 0.1 Tesla flux density, noise of transformer’s core reduces by 3 - 4 dB. Flux density is inversely proportional to the core weight, means the weight and cost of the transformer increases. This method, while the easiest, is the most costly method. b. Grade of CRGO laminations, which is used for making the core, should have properties such as low loss, high permeability and low noise generation from core. When applying high B and laser scribed laminations, it is possible to reduce transformer’s noise for approximately 3 dB. c. Core construction is also important to reduce noise generated by core. Study shows that step-lap lap core construction reduces the noise of the magnetic core for up to 6 dB. At lower inductions with step-lap even greater noise reduction can be achieved. d. Well-designed clamping and tightening structure and techniques for the core yokes and legs can reduce the noise due to reduced magnetostriction and reduced interlaminar ‘chatter’. Controlling the 3 dimensional ‘undulation’ of the core assembly will also reduce the harmonics. e. The vibration of transformer core sheets is the main source of noise generation in transformer. Tightening the core and reducing gaps in the corners will help to reduce core noise. Core laminations are tightened with glass tape (stage B epoxy) banding. This tightens the core uniformly when it is heated and leads to very strong and uniform tightening of core steel. Use of non metallic bolts for tightening of core yokes will provide additional tightening of the core lamination which helps core to produces less amount of noise. f. Bottom yoke of core and core legs after stacking, are coated with varnish or wood glue to reduce vibration of the sheet edges. g. The peaks in angles overhanging of laminations (horns) are cut off, since they are free and vibrate due to the magnetic flux. Alternatively, they can be covered with a putty to keep them from vibrating. • Reduction of noise from Winding a. Specific winding’s noise reduction is achieved by increasing the conductor’s size, or increasing the transformer’s impedance. This however will increase the amount of copper in the cost of the transformer. b. For large power transformers special kind of transposed conductors for making windings are being made in order to reduce losses in the windings and winding’s noise reduction. ONE SOUAC£ -ONE COMMITMENT 3 c. Tightness of winding during manufacturing process, and pressing these axially during drying stage, at certain pressure will reduce the ‘accordion’ effect during operation. d. Moreover, on magnetic circuit assembly after drying process assure winding compression. A tightly compress winding will help to reduce winding noise. • Reduction of Noise Transfer to the Tank a. Avoid mechanical connection between core and coil assembly and tank surfaces to eliminate structure borne noise transmission. No direct connection to tank base or tank wall. Use vibration damping arrangement between all connection points between core and coil assembly and tank walls bottom and top. b. Use of wall sound barriers to reduce oil borne noise. Oil barriers and cushion padding may also help insulate transformer noise and prevent it from spreading. c. The distance from the noise producing surfaces to the tank wall can be adjusted for the fundamental noise frequency to ‘reflect’ most of the sound pressure from the tank wall and ‘dissipate’ the sound energy in the oil. • Reduction of Fan Noise a. Fan’s noise reduction is achieved with fewer numbers of rotor’s revolutions per minute of the fan, but at the same time it reduces the cooling capacity, thus the commonly used fans are with greater number or with larger diameter of blades, in order to compensate the reduced cooling capacity. b. Reduction of fan’s noise can be achieved through balancing the rotating masses, quality of bearing and stable structure for securing the fan to the tank or the radiator for cooling. c. Fan structure borne noise can be reduced by providing vibration dampening material in mounting arrangement between fan to the tank wall. d. The location of fans on transformer also affects the overall noise of the transformer. Use multiple radiator banks and fan bank. Multiple radiator banks will help to increase overall sound producing surface and hence measurement contour for ONAN & ONAF testing. Multiple fan banks will help to reduce overall fan born noise to keep FA sound low. • Reduction of Overall External transformer Noise a. While installing transformers at customer site, use external vibration dampeners along with flexible connections and mounting methods. This prevents metal contact between the mounting surface and the unit, to reduce noise transmission. ONE SOUAC£ _ ONE COMMITMENT 1$(),0,:,tC.,-. 4 b. Noise reduction by sound screens or sound walls would be next best option for sound attenuation. The sound barrier will help reduce the noise in surroundings and reduce sound travel. VTC/GTC Achievement in transformer sound reduction • VTC/GTC achieved 12dB sound reduction to NEMA TR-1 requirement by rigid mechanical design of core and coil, reduced vibration from coil by geometry and material and dampening of vibration emitted from core and coil assembly, reducing transmission of vibration and noise from transformer inside to outside. The graph below shows VTC/GTC achievement of transformer noise reduction compared to NEMA TR-1 –2013 a standard describing transformer sound level requirement. * Year of Mfg. Description Measured Sound, dBA NEMA Rating, dBA Difference - ONAN Difference- ONAF ONAN ONAF2 ONAN ONAF2 2014 22.5/30/37.5MVA, 350kV BIL, 69kV 52.7 58.11 71 74 18.3 15.89 2014 22.5/30/37.5MVA, 350kV BIL, 138kV 52.83 57.82 71 74 18.17 16.18 2014 22.5/30/37.5MVA, 350kV BIL, 69kV 53.23 59.2 71 74 17.77 14.8 2015 18/21.6/24/26.8/30/33.6M VA, 450kV BIL, 115 KV 59 63.5 73 75 14 11.5 2016 11.2/14MVA, 250 Kv BIL, 69KV 56 58 69 70 13 12 * Disclaimer: The transformer noise reduction depends on design, material, performance, size and cost. This paper does not confirm all transformer manufactured by VTC / GTC will have reduced sound as standard function. The noise level performance shown above are the jobs designed to achieve specific noise reduction. ON E S OU AC£ -O NE COMMIT M EN T 2 0 ls m -.:t LI) ~ r---00 C) .-i .-i .-i .-i .-i .-i .-i -2 0 0 0 0 0 0 0 N N N N N N N -4 -6 -8 c:::::J Sound Level -10 (dBA) -12 -14 5 References 1. 2013 NEMA TR-1 – Transformer, step voltage regulators and reactors, 2014 National Electrical Manufacturer Association Rosslyn, VA. 2. 2015 IEEE Std C57.12.90 – IEEE standard test code for liquid immersed Distribution, Power and Regulating Transformers, 2016 IEEE, New York. 3. S. V. Kulkarni, S. A. Khaparde, “Transformer engineering design and practice”, 2004 New York Marcel Dekker Inc. 4. Ljubomir Lukic, Mirko Djapic, Dusica Lukic, Aleksandra Petrovic “Aspects of design of power transformers for noise reduction” published 23th National Conference & 4th International Conference Noise and Vibration 17-19 Oct 2012 5. Ruchi Negi, Prateek Singh, Gaurav Shah “Causes of Noise Generation & its Mitigation in Transformer” International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering Vol. 2, Issue 5, May 2013 6. Luis FERNÁNDEZ BRAÑA, César M. A. VASQUES, Hugo M. R. CAMPELO and Xosé M. LÓPEZ-FERNÁNDEZ “Quite Transformers: Design Issues” Advanced Research Workshop of Transformers 28-30 Oct 2013 ONE SOUAC£ -ONE COMMITMENT Understanding Electric and Magnetic Fields 2 Understanding EMF Contents What we do about EMF . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 What are electric & magnetic fields? . . . . . . . . . . . . . . . . . . .5 Comparing electric & magnetic fields . . . . . . . . . . . . . . . . . .6 Electric field strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Magnetic field strength . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Magnetic fields & health . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Guidelines & exposure recommendations . . . . . . . . . . . . . . .13 FAQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 We’ve provided this booklet to explain electric and magnetic fields (EMF) and to summarize what national and international health and scientific agencies say about EMF . We’ve included the following: Glossary: Look up definitions of technical terms . Terms in the glossary are bolded the first time they are used in the booklet . FAQs: Look at responses to some of the most frequently asked questions about EMF . Contact Information: Contact us for more information or to borrow a magnetic field measuring kit . Resources: Refer to this list for additional details, including links to scientific studies and information from established health authorities . 3 Understanding EMF What we do about EMF If you’re looking to purchase a home that’s located near a power line or if there’s a new line being proposed for your neighbourhood, you may have questions about living near this type of electrical infrastructure . The majority of the concerns we hear are about electric and magnetic fields given off by power lines . Electric and magnetic fields, commonly referred to as EMF, are invisible energy fields that are prevalent in our daily lives . Some key facts and conclusions about electric and magnetic fields from power lines: ○ EMF levels decrease rapidly the further you are from the source . This means that by the time EMF from power lines reach your home they’re often at lower levels than those already present in your home . ○ At the street level, the magnetic field levels from our power lines are actually very low, often lower than the level given off by home appliances . ○ Magnetic fields aren’t shielded or blocked by putting power lines underground . ○ Despite long-term extensive international research over the last 40 years, no health consequences have been established from exposure to EMF at levels less than recommended international guidelines . 4 Understanding EMF What we do about EMF continued This conclusion is based on research and findings of national and international health authorities including Health Canada and the World Health Organization . We understand the relationship between EMF and health will continue to be the subject of ongoing research which is why we: ○ Communicate openly and provide balanced, accurate information about EMF . ○ Commission a regular summary report on the progress of scientific and medical research in this field . These reports, produced by an independent research group are available on bchydro .com/emf . ○ Monitor developments with Health Canada and World Health Organization to ensure we follow their guidelines on EMF and power lines . ○ Follow all federal and provincial legislation and regulations addressing EMF and ensure all our facilities and lines comply with applicable EMF standards . ○ Take appropriate steps to reduce EMF levels in the design of new and upgraded electrical equipment . 5 Understanding EMF What are electric and magnetic fields? Electric and magnetic fields (EMF) are present everywhere electricity flows . Electrical appliances, household wiring and power lines all produce EMF . These fields are part of a broad range of waves called the electromagnetic spectrum, which includes other waveforms such as radiowaves, microwaves, infrared rays and x-rays . In North America, power line’s alternative current (AC) standard frequency is 60Hz . That means the current cycles back and forth 60 times per second . The EMF produced by the power line has the same frequency of 60 Hz, categorizing power line EMF as Extremely Low Frequency (ELF) . This diagram shows the different levels of energy that make up the electromagnetic spectrum . The energy of waveforms increases exponentially as the frequency moves from low to high . Radio Frequency Microwaves Ultraviolet Radiation X-rays Gamma Rays 60 Hz Visible Light Commonname of wave Frequency in hertz (Hz)SourceExtremely Low Frequency 0-3000 Hz 102 106 108 1010 1012 1014 1016 1018 10201040 FREQUENCIES OF THE ELECTROMAGNETIC SPECTRUM AND COMMON SOURCES Source: Institute of Electrical and Electronics Engineers .: I 6 Understanding EMF Comparing electric and magnetic fields Although they are often referred to together as EMF, electric fields and magnetic fields are actually two distinct components of electricity . Electric fields are produced by voltage in a wire, such as a power line . An electric field is also present when an electrical appliance is plugged into an outlet even if it’s not turned on . They can be blocked or shielded by objects like buildings or trees . Magnetic fields are produced when electric current is flowing, so they’re only present when an electrical appliance is turned on . As the flow of electricity— the current—increases, the magnetic fields increase . Magnetic fields pass through most objects and can’t be blocked as easily as electric fields . Electric fields Magnetic fields Produced by voltage; present any time an appliance is plugged in even if it’s turned off . Produced by current; only present when an appliance is plugged in and turned on . Measured in volts per metre or kilovolts per metre . Measured in gauss or tesla . 10 milligauss (mG) is equal to 1 microtesla (μT) . Easily shielded by trees, buildings .Not easily shielded . For both electric and magnetic fields, the strength of the field decreases rapidly with distance from the source. Helpful hint Terms set in bold are explained in more detail in the glossary . For more information related to radio frequency, see the resource section of this booklet . 7 Understanding EMF Electric field strength ○Is directly related to the voltage of the line . ○Also diminishes rapidly with distance from the electrical source . The strength of electric fields near charged electrical lines remain prettyconstant . Electric fields near a charged line exist even when electricity is not being used . This means the electrical wiring your home is producing electric field constantly even when you aren’t using any appliances . The electric fields from transmission and distribution lines change very little because of the line’s stable voltage . Electric field, like magnetic field, diminishes rapidly with distance . Electric field can easily be shielded . Trees, fences and buildings naturally reduces electric field strength and the walls and the roof of your home further reduces the electric field strength from equipment outside the home . TYPICAL MAGNETIC FIELD LEVELS IN THE HOME Hairdryer: 80 V/m Stereo reveiver: 180 V/m Refrigerator: 120 V/m Vacuum: 50 V/m Iron: 120 V/m Electric oven: 8 V/m Light Bulb: 5 V/m Colour TV: 60 V/m Source: World Health Organization, accessed 2016 All measurements were taken at 30 cm from source . 8 Understanding EMF ELECTRIC FIELDS AND STARTLE SHOCKS Most of the interest in possible health effects is related to magnetic fields and not electric fields; however, people may notice the presence of electric fields when they’re near power lines . Conductive objects, like a vehicle, fence line or even the ground can attract an electrical charge when they’re near electric fields . When a person touches that object he or she can experience a startle shock . This is similar in effect to the small shock you might feel in your house after shuffling your feet on the carpet and touching a door handle . Startle shocks aren’t harmful but understanding how and when they happen can help to reduce surprise if you experience one . ELECTRIC FIELDS AND HEALTH In June 2007, the World Health Organization concluded that there are no substantive health concerns related to electric fields at levels generally encountered by the public . (WHO, Fact Sheet No . 322 Electromagnetic fields and public health, June 2007) For more information about electric fields, visit bchydro.com/emf . The remainder of this booklet focuses on magnetic fields as most of the interest in possible health effects is related to them . 9 Understanding EMF Magnetic field strength Magnetic field strength: ○Is directly related to the amount of current flowing . ○Diminishes rapidly with distance from the electrical source . For example, the strength of magnetic fields near electrical appliances depends on the current flowing through the appliance, the configuration of the wiring within the appliance, and the distance from the appliance . Due to proximity, magnetic field levels from appliances are often much higher than under power lines; however, the levels fade quickly as you move away from an appliance . Source: EMF in your Environment, U .S . Protection Agency, 1992 . All measurements were taken 15cm from the sources . TYPICAL MAGNETIC FIELD LEVELS IN THE HOME Hairdryer: 300 mG Vacuum: 300 mG Washing Machine: 20 mG Dishwasher: 20 mG Power Saw: 200 mG Portable Heater: 100 mG 10 Understanding EMF Magnetic field strength (continued) Just like appliances, the magnetic field levels from power lines depend on the current flowing on a line, the configuration of the wiring, and a person’s distance from the line . The current on a transmission line will depend on the electrical load, or how much electricity is being used at any given time . In B .C . variations in current follow a fairly typical pattern, with peaks in the morning and evenings, and higher demand in the winter than the summer . The levels in this diagram are based on typical field levels that would be measured on most BC Hydro power line corridors in each voltage class . They are calculated using average line current and typical line heights . These levels are for general information only and are often different from levels found in EMF profiles produced specifically for new projects . Typically, a project-specific EMF profile shows the highest magnetic field levels possible during a specific line’s lifetime, a condition rarely encountered and used for the purpose of line design . Metres from the line:0m 10m 20m 30m 40m 25 kV Line 138 kV Line 69 kV Line 230 kV Line 500 kV Line Transmission Distribution TYPICAL MAGNETIC FIELD LEVELS NEAR TRANSMISSION AND DISTRIBUTION LINES 81 mG 72 mG 51 mG 33 mG 21 mG 38 mG 28 mG 15 mG 8 mG 5 mG 33 mG 22 mG 11 mG 5 mG 3 mG 18 mG 6 mG 3 mG 1 mG 0 mG 10 mG 5 mG 2 mG 1 mG 0 mG 1 11 f r T 11 Understanding EMF TYPICAL MAGNETIC FIELD LEVELS NEAR SUBSTATIONS Beyond the substation fence, the magnetic field produced by the equipment within the station is typically indistinguishable from the background levels from other sources . Generally, the strongest magnetic field around the outside of a substation comes from the power lines entering and leaving the station . There is a misconception that the transformers within substations are a high source of magnetic field . Modern power transformers are built to keep the magnetic field in the core of the transformer to maximize its efficiency . 12 Understanding EMF Magnetic fields & health The question of whether exposure to electric and magnetic fields (EMF), in particular magnetic fields, causes adverse health effects has been the subject of numerous scientific studies over the last four decades with increasing quality . The extensive health research and scientific knowledge surrounding EMF includes both epidemiological studies and experimental studies in animals, tissues and cells . These epidemiological studies and experimental studies provide pieces of the puzzle but no single study or even all the studies of just one type can give us the whole picture . In epidemiological studies, researchers try to establish if there’s a statistical association between the exposure of certain groups of people and diseases they experience . Some epidemiological studies have suggested a weak association between exposure to magnetic fields and childhood leukemia . It’s unclear, however, whether exposure to magnetic fields actually caused the disease . Some studies don’t include magnetic field measurements when trying to determine an association and no epidemiological study has provided direct evidence that would permit drawing the conclusion that EMF is a cause of cancer or other adverse health effects . Experimental studies involve exposing cells, tissues and animals to magnetic fields under controlled conditions . These studies allow researchers to closely control magnetic field exposure and provide information about any small scale biological changes that magnetic fields may cause . Experimental studies haven’t provided a basis to conclude that magnetic fields are the cause of any disease . Scientists at Health Canada have been at the forefront of experimental studies to assess whether magnetic fields might cause or promote the development of cancer, but in decades of research they haven’t found persuasive evidence for this hypothesis . 13 Understanding EMF Magnetic fields & health (continued) Many reputable health authorities such as the World Health Organization and Health Canada have conducted thorough reviews of all the different types of studies and research on EMF and health . These health authorities have examined the scientific weight-of-evidence and have determined that when all of the epidemiological and experimental studies are considered together, the consensus is that there is no cause-effect relationship between exposure to magnetic fields and human health . We recognize that there are members of the public who remain concerned with the scientific findings to date, and we’ll continue to monitor the scientific developments related to EMF . Guidelines & exposure recommendations Health Canada has reviewed the current scientific findings regarding exposure to Electric and Magnetic Fields (EMF) and concluded: There have been many studies on the possible health effects from exposure to EMFs at ELFs. While it is known that EMFs can cause weak electric currents to flow through the human body, the intensity of these currents is too low to cause any known health effects. Some studies have suggested a possible link between exposure to ELF magnetic fields and certain types of childhood cancer, but at present this association is not established. (Health Canada, 2016) AS A RESULT: Health Canada does not consider that any precautionary measures are needed regarding daily exposures to EMFs at ELFs. There is no conclusive evidence of any harm caused by exposures at levels found in Canadian homes and schools, including those located just outside the boundaries of power line corridors. (Health Canada, 2016) 14 Understanding EMF The World Health Organization (WHO) has also looked at questions around EMF . In June 2007, WHO released a comprehensive report on possible health effects of exposure to extremely low frequency electric and magnetic fields . In this report, WHO stated that the evidence related to childhood leukemia is not strong enough to be considered causal . (WHO, Fact Sheet No . 322 Electromagnetic fields and public health, June 2007) In 1998, the International Commission on Non-Ionizing Radiation Protection (ICNIRP) developed voluntary exposure guidelines . ICNIRP is a formally recognized, international non-profit organization made up of independent scientific experts that are responsible for providing guidance and advice on non-ionizing radiation protection for people and the environment . In its guidelines update in 2010, ICNIRP recommends a residential magnetic field exposure limit of 2,000 milligauss (mG) and an occupational exposure limit of 10,000 mG . These voluntary guidelines were developed to address short-term exposure only . ICNIRP determined that evidence for health effects from long-term exposure is insufficient to establish exposure standards . ICNIRP continues to monitor the research in this area . WHO endorses the guidelines established by ICNIRP . As of 2016, there has been no change to WHO’s position despite annual ICNIRP workshops and meetings on electromagnetic fields and health . You can find details of these meetings on WHO’s EMF project site . Moving forward we’ll continue to monitor developments with Health Canada and World Health Organization to ensure we follow their guidelines on EMF and power lines . Cir:: n ] □ □ □ □ □ L: [ ":: □ _J_-=D=.L_...L__jl..J-===Jlil:~~~=: ~ 7 ____.____J______L_j___u-1.JL::i::::::::Il 15 Understanding EMF Frequently asked questions CAN I AVOID EXPOSURE TO EMF IF I STAY AWAY FROM POWER LINES? No . EMF is found wherever there is electricity, whether in household wiring, electrical appliances, or power lines . Your exposure is determined by how strong the field is at its source, how far you’re from the source, and how long you remain near the source . EMF is strongest at the source and fades rapidly as you move away . CAN YOU ELIMINATE EMF BY BURYING THE LINES UNDERGROUND? No . The ground will shield electric fields, but magnetic fields will still pass through . SOMETIMES I FEEL ELECTRICITY IN THE AIR WHEN I’M UNDER A POWER LINE. WHAT’S HAPPENING? Electric fields exist around all wires that carry electricity . Electric fields can sometimes be noticeable directly under high voltage power lines . This feeling can be discomforting (arm hair stimulation or tingling), but it’s not unsafe or a health risk . I RECEIVED A SHOCK WHEN I TOUCHED MY CAR THAT WAS PARKED NEAR A POWER LINE—WHAT CAUSES THAT? This is called a “startle shock .” It may occur when conductive objects (including people) are located within a power line’s electric field and become electrically charged . When a person with a different level of induced charge contacts an object or another person, the charge is equalized (discharged) between the two bodies and the person may receive a startle shock . A startle shock will not harm the recipient but could cause surprise . 16 Understanding EMF WHY IS EMF CLASSIFIED AS A CARCINOGEN? EMF is not a carcinogen but instead is classified as a “possible carcinogen”, or 2B carcinogen, by the International Agency for Research on Cancer (IARC) . This classification is the weakest of three categories used by IARC to classify potential carcinogens . Other everyday items in this category include aloe vera, gasoline engine exhaust and pickled vegetables . The 2B classification acknowledges that concerns have been raised from some epidemiological studies but conclusive evidence hasn’t been found despite extensive and ongoing research . HOW HAS BC HYDRO TAKEN PRECAUTIONS TO REDUCE POTENTIAL EMF RISKS? Our approach is modeled after recommendations by the World Health Organization to take reasonable precautionary measures . Examples include open communication with the public, monitoring the science on EMF and the way we design our projects including increasing ground clearances and the pole position within rights-of-way . DOES BC HYDRO HAVE MAGNETIC FIELD MEASURING KITS? Yes, we loan magnetic field measuring equipment . The Magnetic Field Measurement Kit comes with a gauss meter and a booklet that explain how to take measurements . To borrow a kit please contact us . HOW DOES EMF AFFECT ME IF I HAVE AN IMPLANTED MEDICAL DEVICE? The guidelines and exposure recommendations set out in this booklet are for the average population and can’t directly address the requirements of people with implanted medical devices like heart pacemakers . For more information and advice about EMF, contact the device manufacturer and the clinician who implanted the device . IS THERE A CONNECTION BETWEEN EMF AND ELECTROMAGNETIC HYPERSENSITIVITY (EHS)? According to the World Health Organization, electromagnetic hypersensitivity (EHS) has no clear diagnostic criteria and there is no scientific basis to link EHS to EMF . 17 Understanding EMF Resources If you’d like to learn more about EMF, we recommend the following sources: OUR EMF WEBSITE Our website is always being updated with new information . It also has links to the resources listed below . bchydro.com/emf EMF AND HEALTH: REVIEW AND UPDATE OF THE SCIENTIFIC RESEARCH This report was prepared by an independent, technical and scientific research firm to assess the current status of research regarding the potential for health effects from exposure to EMF . bchydro.com/emf RADIO FREQUENCY & BC HYDRO’S SMART METERS This site includes information on radio frequency and BC Hydro’s Smart Meters . bchydro.com/smartmeters_safety HEALTH CANADA This fact sheet contains basic information about EMF, typical Canadian exposures and Health Canada’s role . It’s Your Health Fact Sheet: Electric and Magnetic Fields at Extremely Low Frequencies hc-sc.gc.ca/hl-vs/iyh-vsv/environ/magnet-eng.php BC CENTRE FOR DISEASE CONTROL This site includes statements from experts, information on scientific studies and resources for more information . bccdc.ca/health-info/health-your-environment/electro-magnetic-exposures WORLD HEALTH ORGANIZATION This site from the United Nations health agency provides links to EMF fact sheets, extensive research publications and general information about EMF . who.int/peh-emf/en NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES The US National Institute site provides information on research conclusions and results and overall information regarding EMF . niehs.nih.gov/health/topics/agents/emf/index.cfm CANADIAN ELECTRICITY ASSOCIATION The Canadian Electricity Association (CEA) is the professional association of electrical companies across Canada . You’ll find information about the CEA’s commitments to safety and EMF research on the site . emf.electricity.ca 18 Understanding EMF Glossary Cause-effect relationship: A relationship between two variables where one factor directly causes or influences the other . Conductive object: in electrical engineering, a conductor is a type of material or object that allows the flow of electrical current in one or more directions . Metal is a common conductive material . Electromagnetic spectrum: The range of electromagnetic waves, starting with long, low-frequency waves and spanning out to short, high frequency waves . The order of the spectrum is radio waves, microwaves, radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, x-rays, and gamma radiation . Epidemiological studies: Epidemiological studies look at patterns of disease occurrence in human populations and the factors that influence these patterns . These studies are observational in that they examine and analyze people in their normal daily lives to try to determine and correlate their health events with exposure factors . Experimental studies: Experimental studies involve exposing cells, tissues and animals to a specific agent, such as EMF, under carefully controlled conditions to determine if the agent is the cause of a disease . Extremely low frequency (ELF) fields: Extremely low frequency refers to electromagnetic fields in the range of 0-3000 Hz . Field strength: The strength of an electric field, measured in volts per metre (V/m) or of a magnetic field, measured in gauss (G) or milligauss (mG) . Gauss or milligauss: Magnetic fields are measured in units of gauss (G) or tesla (T) . Gauss is the unit most commonly used in Canada, while tesla is more commonly used internationally . Most magnetic field levels related to electrical devices are only a fraction of a gauss so it’s more common to measure magnetic levels in units of milligauss (mG) . A milligauss is 1/1000 of a gauss . Startle shock: A small discharge or shock that’s noticeable but not dangerous . Weight-of-evidence review: A weight-of-evidence review critically evaluates the strength of the evidence for causality for a particular exposure and disease . It entails a comprehensive assessment of all relevant scientific research, in which each of the studies is critically evaluated and more weight is given to studies of better quality . If you’re interested in measuring magnetic field levels in your home, magnetic field measuring equipment is available on loan . The Magnetic Field Measurement Kit includes a gauss meter with a pamphlet that explains how to take measurements . To borrow a kit, please contact us at 604 699 7678 or toll free at 1 866 647 3334 . For more information: Visit: bchydro.com/emf Phone: 604 699 7678 or toll-free at 1 866 647 3334 Email: emf@bchydro.com BCH16-168 (I)BCHydro Power smart From:Andrew King To:Hunter Simmons; Qalert 311 Subject:Proposed substation at 8300 Morphy Date:Wednesday, May 12, 2021 9:50:32 AM SENT FROM AN EXTERNAL ADDRESS Mayor Sullivan and Mr. Simmons, My wife and I live at 539 Salem St in Hawthorne Glenn II. Our home is adjacent to the site that the city is proposing to use as an electric substation. We obviously are very disappointed that the city has decided to purchase property zoned single family residence, next door to a subdivision with approximately fifty homes. We purchased our home in 2018 as our forever home to live out our years in retirement. One of the main reasons we chose this spot was the natural beauty directly behind us. Never in our wildest dreams would we imagine that the city we have come to love would place an electric substation in our backyard. We have several concerns on how this project has come about with basically zero opportunity for our neighbors to voice their concerns. We found out about this project on Saturday, May 8th. We were told to send our comments in writing by Friday, May 14th, just six days from receiving the notification. Apparently, the zoning board is planning on voting on this project on Monday, May 17th. In all fairness, do you really think that a decision like this that will a life changing event for the citizens in our neighborhood can be made in just ten days? We have also learned that the city purchased land with the intent to build this facility without any public input. This would appear to be a violation of rezoning protocols. If this city moves forward with this despite the objections from the community, we would like to know what will be done to address the following concerns: How will the city address the certain loss of our property values? What is the city's plan to safeguard our homes from the potential safety hazards of being exposed to EMF radiation, the effects of which are well documented and there are several homeowners with small children adjacent to this proposed substation? How will the city diminish the constant noise disruption that emanates from high voltage electric transformers? Will the city put in writing that the 2.4 acres will not be used in the future as a storage facility for public works or other out buildings? Does the city plan to cut down and destroy the several hundred year old pecan trees and other foliage on the property and if so will they replace with mature landscaping to reduce the unsightly facility in our backyard? It's incomprehensible to the people in our community that the city has not done a better job of finding a site that does not require rezoning what is currently a single family neighborhood. Surely, there are other more suitable sites available that won't ruin our quality of life and home values. We understand the property has already been purchased. Maybe that was a mistake before getting public input but as you well know, that property will continue to gain in value and the city can resell it in the future without taking a loss. We strongly encourage you to continue to search for another site or spend the additional dollars to utilize the site behind the ABC store near Winn-Dixie. We are looking forward to sharing our concerns with you on Monday night. Andrew and Rebecca King 539 Salem St. Fairhope, AL 36532 251-300-7429 From:Barbara To:Hunter Simmons Subject:Electrical substation adjacent to our neighborhood Date:Monday, May 10, 2021 3:01:37 PM SENT FROM AN EXTERNAL ADDRESS To whom it may concern: I am totally against the electrical substation in my backyard! 1. Noise 2. Health hazard 3. Decreasing property value 4. Unsightly With all due respect please tell the city to put it in their backyard, not mine. Plenty of vacant land on Greeno away from subdivisions. From:Christopher Wimmer To:Hunter Simmons; Qalert 311 Subject:Substation Proposal Case BOA 21.01 - 8300 Morphy Avenue Date:Thursday, May 13, 2021 3:06:33 PM SENT FROM AN EXTERNAL ADDRESS Good Afternoon, We are writing in response to the City of Fairhope letter pertaining to the special exception hearing taking place next Monday, May 17th. Our understanding is the city purchased and is proposing to build an electrical substation on the vacant lot, located at 8300 Morphy Ave. This is directly behind our house (531 Salem Street) and my neighbors. The news of this proposal is very upsetting and immediately brings several questions/concerns that are listed below. Property Value The impact of putting an electrical substation within a couple 100ft of our house and my neighbors will most certainly drive down the valuation of our homes. Our house is the first my wife and I have ever purchased. The thought of losing money and potentially being underwater on our mortgage is hard to comprehend knowing how strong the housing market has been in Fairhope and it was the city’s decision that will be impacting our homes. 1. Is there any discussion on potential plans to assist the homes will be greatly impacted if the substation is built? Location Change We were aware the city was discussing plans in 2019 for an electrical substation across the street in the ABC Store/Winn Dixie shopping center. Our understanding was plans had been (or were being) drawn, and we would expect to see it being built in the near future. We did also hear the location presented additional hurdles being near a retention pond, but there was never any indication from the city that there was a potential change in location. We then get a letter that we have basically a week to respond to a new location, which feels like a short turn around for this type of change in the community. 1. Please explain why the initial site was no longer acceptable and the need of putting it closer to residential homes makes sense. 2. What is the cost difference between the two locations? 3. Have there been any other sites proposed? If so, what are the costs of those proposed sites? Health Concerns Our basic knowledge of an electric substation installation is there are very strict requirements and regulations that will have to be met. Also, putting the lines underground helps reduce some of the radiation concerns since the ground soil helps absorb it. That is good news, but it still presents environmental risks to my wife and 11-month-old son knowing we will be living so close to this. We also have several families with kids ranging from approximately 6-13 years old in the neighborhood. These kids regularly play in and around the tree line that backs up to this lot. The potential of having this so close to where they regularly play makes me as a parent very nervous. It would not take much for a curious kid to one time want to get a closer look and something very serious happens. 1. What safety precautions are going to be in place that will help minimize the risks for the number of homes that surround it? Design/Size We have yet to see a plan of what is being proposed by the city. 1. When will these be available for the public to see? 2. Does the city plan on using the entire 2+ acres? 3. Are you planning to clear the entire lot? 4. What is the expected timeframe for this to be built? 5. Is the site going to be used for anything else? We are having a hard time understanding why the city believes this location makes sense. We would strongly encourage the city to continue looking for another location that would have no real impact on the tax paying members of your community. This location seems to be better for a small park or something that allows the characteristics of the land to remain in-place, since it is a beautiful piece of property. We would also ask the city to be very transparent in keeping everyone informed as this process continues. The lack of information is concerning and we feel very caught very off guard by what feels like a quick decision. We look forward to speaking with you at the hearing. Sincerely, Chris and Laura Wimmer 531 Salem Street May 12, 2021 Hunter Simmons Planning and Zoning Manager City of Fairhope Request: Special Exception Case: BOA 21.07 Applicant: Fairhope Public Utilities Property Located: 830 Morphy Avenue Dear Hunter Simmons, My name if Frank G. Lamia, I reside in the Hawthorne Glenn subdivision abutting the west side of the property noted above. I am voicing a strong objection to this special exception for the following reasons: 1) All property south of Morphy surrounding the proposed substation is zoned single family residential (R-3, PGH) and is currently developed as such. Plopping an industrial looking facility in the midst of this residential is just not thoughtful planning. Single family homes in Hawthorne Glenn will back up to it. When they bought their homes they were adjacent to other residential properties and had every reason to believe it would stay that way. Now they will be hearing and seeing an electrical substation. 2) If built I believe this substation will adversely impact property values for at least a portion of the homes in Hawthorne Glenn. It has to, who wants to live within view of this. 3) From a planning perspective the City should be looking for more commercial / industrial zoned sites for these facilities. This looks like not much long term master planning is being done to spot and acquire potential sites to accommodate utility growth. The solution should not be to force it into an established residential neighborhood. We are hoping you will understand our concerns and help us protect our neighborhood and find another site. Regards: Frank G. Lamia 271 Hawthorne Circle Fairhope, Alabama 36532 May 11, 2021 Board of Adjustments and Appeals Honorable Members of the Board of Adjustments and App eals, My husband and I purchased our newly built home at 535 Salem Street in July 2016 and se lected the house based on the location. The back of the lot adjoined almost 2 acres of undeveloped land (8300 Morphy Avenue) with a home located at the back of t he property. We m oved from an area in rura l Tennessee that did not have zon ing regulations. We understood that ou r property in Fairhope was zoned higli density single family housing and believed this protected the property and the value of our home. We also understood that the property in back of us could be developed into home sites because of the zoning regulations . We did not purchase our property thinki ng or believing the City of Fa irhope would purchase the property at 8300 Morphy Avenue for an electrical substation. We respectfully request the Board of Adjustment and Appeals to deny this special exception for the following reasons: 1) Concern of the potential health effects from EM F's (electromagnetic fields) w h ich are a form of radiation put off by power lines and su bstations. EMF's emitted by a substation can increase the risk of developing health problems such as cancer, illnesses w ith no determined cause, adrenal fatigue, hormone imbalance, insomnia, depression and anxiety. 2) Reduction in property value. Hawthorne Glenn is conveniently located to dining, shopping, and medical care. Since 2016 w e have seen property values dramatically increase. Our home was purchased in 2016 for $246,000. Recent home sa les for the same type of home reflect values of $342,000+. The constructio n of a substation directly behind our pro perty Will decrease ou r property value. Any future sa le of t he property wH I be negatively impacted as the public perceives living next to an electrical substation as a health risk and an eyesore. I have read that property values near a substation can decrease by as much as 40%. The overall property va lues for Hawthorne Glenn will decrease as this will affect all home owners. 3) Decrease in the enjoym e nt of our property. As previously stated, we did not buy our property believing a substation would be located in direct sight of ou r back yard. In add ition to the sight concerns are noise and overhead power line concerns. We ask that you consider how you would feel if t his happened to yo u r property. No one would want a su bstation in back oftheir property . 4) We ask the Board of Adjustments and Appeals deny t his change so the City Council can revisit other sites l ocated in com mercial areas or locations away from high density single family homes. 5) We ask the Board of Adjustments and Appeals to deny this change so the City Council can rneet with residents to give an ove rview of the project and how they propose to mit igate/e liminate the_ reduction of our property val ue, hea lth concerns and loss of enjoyment of our prope rty. One final observation. The City Council acted on buying property for t his purpose without consulting residents who would be effected by this pu r chase and zon ing exception. Since the property was purchased on April 12, through the date of this letter, we have had no communication from any City Council member or the City Mayor explaining their actio ns or supplying residents with an overview of the project and how they propose to mi tigate the reduction of our property values, health concerns, and the loss of enjoyment of our property. After a review of the minutes and agenda, I determined that no public discussion of this purchase took place whatsoever. The council just voted to ratify the council president's actions. I once again ask the members of the Board of Adjustments and appeals to deny this special exception. Today it is the residents of Hawthorne Glenn, tomorrow it will be you. Respectively, Kent and Malinda White 535 Salem Street Fairhope, AL 36532 From:Roy Cannedy To:Hunter Simmons Cc:Qalert 311 Subject:Special Exception Request for 8300 Morphy Avenue Date:Thursday, May 13, 2021 7:42:49 PM SENT FROM AN EXTERNAL ADDRESS I am writing in response to the letter dated May 5, 2021 pertaining to the Fairhope Public Utilities Special Exception Request for the property at 8300 Morphy Avenue. I am a resident of the Hawthorne Glenn subdivision and am very disappointed with the city's decision to purchase this property with the intent to relocate and expand the electrical substation currently located on Fairhope Avenue. I have many questions and concerns regarding the choice of this parcel of land for this project, but I will highlight just a couple of those here. (1) How would this project effect the safety and well being of the nearby residents? There are two existing structures and many mature trees on this property and it is adjoined by several neighboring private homes. Isn't there an inherent fire risk that is associated with the operation of this type of equipment, and doesn't this regions unpredictable weather only heighten this threat? There is also concern of the additional EMF's that are generated by the components of this equipment. Studies have shown a link between these EMF's as being possibly carcinogenic and have been cited as a possible cause, in certain cases, of childhood leukemia. (2) How would this project effect the aesthetic and, consequently, the property value of the nearby residents? It may be one thing to drive by on Morphy Avenue and possibly not notice this at all but quite another when you see this every time you look out your kitchen window. In stating my own personal view, why would this property which is in close proximity to schools, retail shopping, restaurants, Thomas Hospital, and many other places of business, and is in a residential neighborhood, not remain a residential property? I understand that the City of Fairhope and all of Baldwin County is experiencing tremendous growth at this time and that our city leaders are burdened with the tremendous challenges that are related to this growth, and I appreciate the time and effort and energy of all those involved, however, it is my hope that an alternative or perhaps existing location can be determined to be a better location for this project. Respectfully submitted by, Roy Cannedy 392 Scarlett Avenue From:Trey To:Hunter Simmons Subject:Substation at 8300 Morphy Avenue Date:Tuesday, May 11, 2021 2:38:40 PM SENT FROM AN EXTERNAL ADDRESS Mr. Simmons, My name is Trey Canida, and I live at 522 Salem Street. I received the notice regarding the proposed substation to be built on 8300 Morphy Avenue. I am sending this email to express my concerns with the proposal, and I plan to attend the meeting on May 17. My concerns are mainly threefold. (1) diminution of property values (2) safety and (3) nuisance factor. First, I would like to provide some background. The proposed substation will be directly behind my home. My wife and I have lived at this residence since November 2017. We welcomed our first child home in February 2020, and my wife is pregnant with our second child who is due in October. While all of us are lucky to live in a beautiful town like Fairhope. I fear that myself as well as my neighbors will be negatively impacted by this proposed substation being built directly behind our property. Specifically, there are five houses that share a boundary line with the property located at 8300 Morphy to the best of my knowledge. While living in Fairhope, I have seen my property value go up every year, and with the current state of the housing market, I know that property value would normally likely continue to go up. However, I can't help but be concerned that this proposed substation will diminish the value of my property as well as the property of my neighbors. As I understand it, this substation was initially planned to be built behind or to the side of the ABC store in the Winn-Dixie shopping center. I understand that the substation was to be built at or near the current retaining pond that is located next to the ABC store, but that because of engineering surveys, additional costs were going to be a necessity to build up that property for the substation. I understand and appreciate the city's fiscal concern, and I am happy that the City does not want to expend additional funds when they feel they don't have to. However, I can't help but feel as if the City is instead passing those additional costs on to myself and my neighbors by building this substation directly behind our property, which will certainly cause a diminution in the value of our properties. Whether there is any truth to any safety or health concerns or nuisance factors, the ordinary person has concerns about living directly next to an electrical substation. The proposed substation would probably be less than 100 feet from my backyard. Due to this fact, I imagine my wife and I will lose property value in our home, and the resale value of the home will be affected. Second, while I have no specific knowledge about any safety concerns regarding living in close proximity to an electrical substation. This is a matter that greatly concerns me. I would like to hear more from the city about any safety issues that might arise from having my wife and (soon to be) two small children living so close to an electrical substation. I'm certain that Fairhope Utilities has reviewed studies and/or has more information about this concern which I am sure is shared amongst my neighbors. Third, nuisance factor. I have heard anecdotal stories about loud humming noises emanating from electrical substations such as the one that the City is proposing to build next to my property. Again, this is something I hope Fairhope Utilities could provide more information about before Planning and Zoning makes their final decision. When all of these factors are considered, I can't help but wonder why a better location cannot be found for this substation. Is it really necessary to build this substation so near a subdivision and multiple single family homes? Is there not a better, less populated and/or business zone where this could be built. I feel as if the location by the ABC store would have been a substantially better location for this proposal. Again, while I appreciate the City's fiscal concerns concerning that location, I hope the city will also appreciate the concerns that are shared amongst myself and my neighbors if this electrical substation is built right next door to our property. I would hope that anyone who has a vote or a voice in deciding whether this zoning variance is granted would consider how they would feel if the variance was in their own backyard. Finally, I think I speak for myself and many neighbors when I say that we would like this process to be more well informed. As I understand it, plans are being drawn up regarding the engineering of the site, the placement of the substation, and the landscaping and layout of the proposed substation. I urge the Planning and zoning Commission to hold off on making any decision until such plans are made public and are available for review. Thank you for your time, and I look forward to the meeting Monday night. Thanks, Trey and Amanda Canida 522 Salem Street From:Wilma Castillo To:Hunter Simmons Subject:Regarding 8300 Morphy Ave. Date:Thursday, May 13, 2021 4:13:36 PM SENT FROM AN EXTERNAL ADDRESS To whom it may concern: I, Wilma Castillo, residing at 538 Salem St in the Hawthorne Glen II subdivision, ask that no electrical substation be built on the property at 8300 Morphy Ave. The current zoning is residential, myself and my neighbors would like it to remain so. This is in part out of potential concerns of negative effects on the health of people living nearby, and in part out of concern for the property value impacts. Especially among those who would be nearest to the property, are those who have very young children. For all of us living in this neighborhood, the property value concern is particularly troubling. We purchased homes here in this neighborhood, in this city, believing that the adjacent land would remain residential except for where businesses were already established. If the property at 8300 Morphy Ave. becomes an electrical substation area, it will make our homes considerably more difficult to sell should we decide to sell them. We would much rather continue to live in a Fairhope that doesn’t think it appropriate to put an electrical substation so close to our homes. We would greatly appreciate it if another location, one not bordered by homes and families, be used for an electrical substation. Thank you for considering our voices in this matter, Wilma Castillo Submitter Wonsick, Tony Fairhope, AL tonywonsick@gmail .com View in QAlert Fairhope , AL 2