CITY OF AUBURN, NEW YORK

Transcription

1 CITY OF AUBURN, NEW YORK History s Hometown Auburn Planning Board The Regular Monthly Meeting of the Planning Board will be held at 6:30 PM on January 2, 2018 at Council Chambers, Memorial City Hall, 24 South Street, Auburn, NY The Planning Board is responsible for the review and approval or disapproval of site plans, special use permits, and subdivisions submitted to the City. The board meets on the first Tuesday of each month for consider applications. AGENDA 1. APPROVAL OF MEETING MINUTES 1.a. Planning Board meeting minutes of December 5, 2017 PlanningBrdMin pdf 2. SITE PLAN APPLICATIONS 2.a. Site Plan Review for the construction of a new employee parking lot and site improvements at 6 Park Avenue (and portion of 17 Lansing Street). Applicant: Auburn Community Hospital. Memo_to_the_Board_ docx SEQRA NEG Dec Res.docx Major Site Plan Res.docx Site Plan App and EAF Part 1_ pdf EAF Part 2 and 3.pdf Site Plans.pdf _Stormwater Analysis_ pdf 3. OTHER MATTERS PROPERLY BROUGHT BEFORE THE BOARD 4. ADJOURN

2 CITY OF AUBURN PLANNING BOARD TUESDAY, DECEMBER 5, :30 PM MEMORIAL CITY HALL Present: Sam Giangreco, Anne McCarthy, Crystal Cosentino, Christina Tomasso, Andy Tehan Excused: Tim Baroody, Theresa Walsh Staff: Nate Garland, Corporation Counsel; Stephen Selvek, Office of Planning and Economic Development Agenda Items: Site Plan Review for 271 Grant Ave; Site Plan Review for 3 Hoffman Street; Recommendation to City Council to Repeal and Replace Chapter 305 Entitled Zoning; Presentation on the construction of a parking lot at 6 Park Avenue; Merriman Street Family Transitions Project Landscape Revisions. Items Approved: Site Plan Review for 271 Grant Ave; Site Plan Review for 3 Hoffman Street; Recommendation to City Council to Repeal and Replace Chapter 305 Entitled Zoning Applications Denied: None Applications Tabled: Site Plan Review for 6 Park Avenue. Chair calls the meeting to order. The Pledge of Allegiance is recited. Roll is called. Agenda Item 1: Approval of November 8, 2017 Meeting Minutes. Chair asks for any corrections on the November 8, 2017 meeting minutes. There being none, Chair asks for a motion to approve the November meeting minutes. Motion made by Crystal Cosentino, second by Tina Tomasso. All in favor. No members opposed. Motion carried. Agenda Item 2: Application for Site Plan Review for the construction of a 6,700 SF building with parking at 271 Grant Ave. Applicant: Frontier Development, LLC. Chair invites applicant to present the project. Rick Marr, Dunn & Sgromo Engineers, Dewitt NY- The Site Plan proposal is for the development of a new building. There will be two tenants, Aspen Dental and Urgent Care Center. The parking exceeds city requirements because of the tenant s request. The site plan has been reviewed by staff. The following information was requested and has been submitted to the city. Drainage report Photometric Plan Landscaping Plan for circulation of fire trucks Signage Chair asks for Board questions and comments. There being none, Chair asks staff for comments.

3 Stephen Selvek- The items that Rick Marr outlined have been submitted reviewed and Design Review Committee did not have concerns with what is being proposed. The pylon sign out front is currently permitted but will become a non-conforming sign after the zoning code update is adopted. Stephen reviews the Short Environmental Assessment Form with Board members. Part 2 of the Environmental Assessment Form Questions 1-11 are all No, or small impact may occur. Part 3 reads: The proposed project is the redevelopment of an existing commercial site within a commercial corridor. As the scope of the project is limited and the site is previously developed, impacts to the environment are not anticipated. The proposed use is appropriate within the Highway Commercial Zoning District. Any impacts, should they exist, are small. Staff asks if the Board has questions. Rick Marr clarifies with the Board that the project requires a permit from the NYS DOT because there is a driveway on Grant Ave. that will be affected. We have been in contact with NYS and are expecting approval shortly. Motion to approve the Negative Declaration Resolution for 271 Grant Ave made by Crystal Cosentino, second by Anne McCarthy. All in Favor. None Opposed. Motion Carried. Motion to approve the Site Plan Resolution for 271 Grant Ave made by Andy Tehan, second by Anne McCarthy. All in Favor. None Opposed. Motion Carried. Agenda Item 3: Application for Site Plan Review for the construction of a 14 vehicle parking lot at 3 Hoffman Street. Applicant Joe Giacona. Chair asks for staff updates. Stephen Selvek- The Design Review Committee revised the site plan and did not have any concerns. This site is currently in a residential district. The intent is to put this entire site, including the parking lot into the Downtown District of the updated zoning code. However, until that is done the parking lot is not permitted. At this point we are far along in the zoning code update process where I feel comfortable recommending this to the Board and have noted in the resolution that this is contingent upon adoption of the revised zoning map. There are other contingencies including the proper radii needed for the driving entrance and the area between the curb edge and the area near the sidewalk is to be lawn. There are concerns on the existing wood storage building on the site. Code enforcement and Fire visited the site and would like a contingency in the resolution on the demolition or stabilization of the building. Reviews the Short Environmental Assessment Form with the Board. All answers on Part 2 for questions 1-11 are no, or small impact may occur. Part 3 reads: The proposed project included the removal of a failing residential structure and minor expansion of an existing parking lot for an existing commercial use. Any impacts, should they exist, are small. Applicant s counsel is invited to the podium. Dominic Giacona, representing Joe Giacona- The structural integrity of the wood shed will be explored. The zoning update is scheduled for later in December and the Board would like to make the approval contingent on the property being reclassified as commercial. Although we are hopeful on the rezoning, we would like to request that the approval reflect that my client can make an application to Zoning Board of Appeals for a use variance application, if needed. This request is still in line with the proposed zoning update but it would save us additional work if the zoning code update was not adopted. Stephen Selvek- That will be added as part of the contingencies in the resolution.

4 Crystal Cosentino asks when Council will be giving consideration to the zoning code update. Stephen Selvek- It will be in front of City Council for adoption on December 21 st. The effective date of the new zoning will be January 1, Dominic Giacona asks the Board what they need for the structural integrity of the Barn. The Barn has been shored up. Are you looking for a report from a certified engineer? Is there additional approval that is needed from code enforcement? Stephen Selvek- A letter from a structural engineer regarding the structural integrity can be sent to the Planning Department. Motion to approve the Negative Declaration Resolution for 3 Hoffman Street made by Crystal Cosentino, second by Tina Tomasso. All in Favor. None Opposed. Motion Carried. Motion to approve the Site Plan Resolution for 3 Hoffman Street made by Crystal Cosentino, second by Tina Tomasso. All in Favor. None Opposed. Motion Carried. Other Items a. Recommendation to City Council to Repeal and Replace Chapter 305 Entitled Zoning. Chair asks staff for comments. Stephen Selvek- The City is in the process of going through a comprehensive update of the zoning code. A Public Hearing was held the November 8 th Planning Board meeting and at City Council on November 9 th. Another public hearing will be held at City Council on December 14 th. The role of the Planning Board is to give a recommendation to City Council regarding the adoption of the revised zoning code. The adoption of the zoning code update is the responsibility of City Council. The changes in the December 1 st draft are associated with comments received from the public, board members, staff etc. and are now passed onto council for their consideration. Stephen Selvek reviews the revisions made to the December 1 st draft with Board members. Revisions reviewed include food trucks, tiny homes, microbreweries, notification distance and timing, RV storage, drive thru establishments, heavy equipment storage, billboards, and short term rentals. There is a proposed zoning map that outlines the R1 and R2 districts, three commercial districts (blue is central corridor commercial, red is general commercial and orange is highway commercial), the Downtown District, two Industrial Districts (I2 Resources Recovery is the City landfill and General Industrial.) Currently there is a concern with heavy industrial uses next to residential areas. My recommendation is to zone those areas as general commercial which would allow manufacturing in an enclosed area and would not allow heavy industrial uses. We are looking at balancing planning and economic development. We want to foster economic development in the City but also protect the neighborhoods. The requirements for our Planning Board would be pulled from the subdivisions section of our code and placed into the zoning code. It would be amended to include the State requirements for training. Also, the proposal is to move from a seven member Board to a five member Board. General City Law 27 permits a five member Planning Board. With the creation of new Boards such as the public arts five member board, we would like to balance volunteer needs and training requirements. Requests Board member feedback on the zoning updates including the proposal of moving from a seven member board to a five member board. Additionally, every April the Board will revisit the zoning code and review it any necessary revisions. Chair asks for Board member questions or discussion.

5 Sam Giangreco prefers the Planning Board to remain a seven member board. Andy Tehan asks what quorum would be if it was a five member board? Stephen Selvek responds that 3 members would have to be present to meet quorum. Crystal Cosentino- The April review would include significant changes? Questions spot zoning. Stephen Selvek- It could include significant changes. It is a living document but any changes would have to have a foundation and basis in the Comprehensive Plan or a Land Use Plan. Changes would go to City Council for approval. Spot zoning is about rezoning a parcel to benefit a single developer in absence of the impacts it has on adjacent areas and in opposition to a Comprehensive or Land Use Plan. Motion to adopt the Zoning Amendment Recommendation Resolution made by Crystal Cosentino, second by Andy Tehan. All in favor. None opposed. Motion carried. b. Presentation: Construction of a new employee parking lot and site improvements at 6 Park Ave (and portion of 17 Lansing). Applicant: Auburn Community Hospital. Chair invites applicant to the project. Sarah Casey, Napierala Consulting- Presenting a concept plan of a parking lot for Auburn Community Hospital. The parking lot is currently a 41 space lot for employees of Auburn Community Hospital. There will be a gate to restrict access. Plans that will be brought forward to the City for review will include lighting, landscaping, snow removal considerations and grading and drainage. There is an 8ft maintenance path to allow access for employees to access the hospital but also to be maintained by snow plows. Chair asks for Board questions and comments. There being none, Chair asks for staff comments. Stephen Selvek- The Design Review Committee reviewed the preliminary site plan and had a concern to the grade change in the area. The proposed parking has been maximized and some type of reduction in spots will be reduced for mitigation of storm water runoff. There are not significant concerns to traffic generation with the parking lot since it is gated. There are parking constraints near the hospital and this is a benefit to the neighborhood. Details and additional plans will be in front of the Board for your review. Motion to table the application for 6 Park Avenue made by Andy Tehan, second by Anne McCarthy. All in favor. None opposed. Motion carried. c. Merriman Street Family Transitions Project Landscape Plan Revisions. Chair asks staff for comments. This plan was in front of the Board about a year ago. The plantings proposed at that time were ambitious and the applicant would like to request a decrease in the number of plantings proposed. The revised plantings still comply with the existing code. The plantings are being focused on the public right away on Garrow Street. Trees are still being incorporated inside of the campus, along the roadway. If the Board has no objections staff can communicate with Auburn Housing Authority on the revised plan. Anne McCarthy asks what the percentage of change would be. Stephen Selvek responds that it will be more than a 50 percent change and explains that staff brought it back before the Board because of the significant change. However, it still complies with code.

6 Chair asks Board members if there are any objections to the permitting of the landscape revision. There are none. The date of the next Planning Board meeting is Tuesday, January 2, 2018 at 6:30pm. Motion to adjourn made by Andy Tehan and seconded by Tina Tomasso. All in Favor. None Opposed. Motion Carried. Respectively submitted by Renee Jensen

7 Memorial City Hall 24 South Street Auburn, New York Tel: (315) Fax: (315) OFFICE OF PLANNING & ECONOMIC DEVELOPMENT JENNIFER L. HAINES, DIRECTOR MEMORANDUM To: Auburn Planning Board From: Stephen M. Selvek, Deputy Director of Community Planning and Development Date: December 29, 2017 Re: Application for Site Plan Review for the construction of a new employee parking lot and site improvements at 6 Park Avenue (and portion of 17 Lansing Street). Applicant: Auburn Community Hospital. Attached is an application and plans for the construction of a new employee parking lot and site improvements at 6 Park Avenue. The site also includes a portion of 17 Lansing Street, which fronts on to Park Avenue. It is located between two health related uses and backs up to the hospital. Directly across the street are residential homes. The parking lot is served by a single vehicular access driveway on Park Avenue and it would provide parking for 41 vehicles. Because this is a controlled access parking lot to support existing services at the hospital, the introduction of new traffic to the area is not a significant concern. There is however an increase in impervious surfacing and lighting that are potential impacts. The plan includes provisions for stormwater management that will decrease the amount of potential runoff. This mitigates the potential impact associated with stormwater runoff. The plans also includes a lighting plan indicating that the parking lot lights will be mounted at 14 feet above grand and the illumination will not spill off the site. Staff recommends issuance of a negative declaration and approval of the Site Plan. Resolutions are included for the board s consideration. Page 1 of 1

8 CITY OF AUBURN PLANNING BOARD RESOLUTION SEQRA RESOLUTION SEQRA Action-Negative Declaration 6 Park Avenue Auburn Community Hospital Parking Lot City of Auburn Tax ID By Planning Board Member: Date: January 2, 2018 WHEREAS, the City of Auburn Planning Board has received applications for Site Plan Review for the construction of a new 41-vehicle employee parking lot and site improvements at 6 Park Avenue and a portion of 17 Lansing Street; and WHEREAS, a review of the above Unlisted Action has been made in full compliance with Article 8 of the New York Conservation Law and the New York State Environmental Quality Review Act (SEQRA); and WHEREAS, said review has resulted in a reasoned determination that the proposed action will NOT result in any large and important impact(s) and, therefore, is one which will not have a significant negative impact on the environment; NOW, THEREFORE, BE IT RESOLVED, by the City of Auburn Planning Board, that a NEGATIVE DECLARATION for the proposed action be prepared in full compliance with Article 8 of the New York State Environmental Conservation Law. Seconded by Planning Board Member: ROLL CALL YES NO ABSENT ABSTAIN Elizabeth Koenig Andy Tehan Theresa Walsh Tina Tomasso Crystal Cosentino Sam Giangreco, Chairman MOTION IS: Carried and Adopted Defeated, Not Adopted SSelvek Page 1 12/29/2017

9 CITY OF AUBURN PLANNING BOARD RESOLUTION SITE PLAN RESOLUTION Major Site Plan Review 6 Park Avenue Auburn Community Hospital Parking Lot City of Auburn Tax ID By Planning Board Member: Date: January 2, 2018 WHEREAS, the City of Auburn Planning Board has received applications for Site Plan Review for the construction of a new 41-vehicle employee parking lot and site improvements at 6 Park Avenue and a portion of 17 Lansing Street; and WHEREAS, said review of the above action has been made in full compliance with Article 8 of the New York Conservation Law and the New York State Environmental Quality Review Act (SEQRA), and the City of Auburn Planning Board has determined to prepare a Negative Declaration under SEQRA for the proposed action; NOW, THEREFORE, BE IT RESOLVED, by the City of Auburn Planning Board that it hereby approves the Site Plans titled, Auburn Community Hospital Proposed Parking lot 17 Lansing Street, dated December 11, 2017; and BE IT FURTHER RESOLVED, that this approval is contingent on the agreement of the applicant that if minor changes from the approved site plan are identified by the Public Works Department, Fire Department, or other City Department during the construction process, said changes will require acceptance by Planning Board Staff and shall be incorporated into the site plan. Seconded by Planning Board Member: ROLL CALL YES NO ABSENT ABSTAIN Elizabeth Koenig Andy Tehan Theresa Walsh Tina Tomasso Crystal Cosentino Sam Giangreco, Chairman MOTION IS: Carried and Adopted Defeated, Not Adopted SSelvek Page 1 12/29/2017

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11 PROJECT SITE LOCATION MAP AUBURN COMMUNITY HOSPITAL N

12 Instructions for Completing Short Environmental Assessment Form Part 1 - Project Information. The applicant or project sponsor is responsible for the completion of Part 1. Responses become part of the application for approval or funding, are subject to public review, and may be subject to further verification. Complete Part 1 based on information currently available. If additional research or investigation would be needed to fully respond to any item, please answer as thoroughly as possible based on current information. Complete all items in Part 1. You may also provide any additional information which you believe will be needed by or useful to the lead agency; attach additional pages as necessary to supplement any item. Part 1 - Project and Sponsor Information Name of Action or Project: Auburn Community Hospital Parking lot Project Location (describe, and attach a location map): 6 Park Ave (17 Lansing Street) Brief Description of Proposed Action: The proposed project includes the lot consolidation of 6 Park Ave to the Auburn Community Hospital and the construction of a 41-space parking lot for Hospital employee parking only. On site improvements include a full access driveway with an automatic access gate, landscaping, lighting, grading and stormwater mitigation in conformance with City of Auburn guidelines, and an eight-foot wide access path for pedestrians and maintenance vehicles to access the Hospital. Name of Applicant or Sponsor: Mark Odrzywolski, Auburn Community Hospital Address: 17 Lansing Street Telephone: modrzywolski@auburnhospital.org City/PO: State: Zip Code: Auburn NY Does the proposed action only involve the legislative adoption of a plan, local law, ordinance, administrative rule, or regulation? If Yes, attach a narrative description of the intent of the proposed action and the environmental resources that may be affected in the municipality and proceed to Part 2. If no, continue to question Does the proposed action require a permit, approval or funding from any other governmental Agency? If Yes, list agency(s) name and permit or approval: City of Auburn Planning Board NO NO YES YES 3.a. Total acreage of the site of the proposed action? 8.25 acres b. Total acreage to be physically disturbed? 0.5 acres c. Total acreage (project site and any contiguous properties) owned or controlled by the applicant or project sponsor? acres Check all land uses that occur on, adjoining and near the proposed action. Urban Rural (non-agriculture) Industrial Commercial Residential (suburban) Forest Agriculture Aquatic Other (specify): Parkland

13 5. Is the proposed action, a. A permitted use under the zoning regulations? b. Consistent with the adopted comprehensive plan? 6. Is the proposed action consistent with the predominant character of the existing built or natural landscape? 7. Is the site of the proposed action located in, or does it adjoin, a state listed Critical Environmental Area? If Yes, identify: 8. a. Will the proposed action result in a substantial increase in traffic above present levels? b. Are public transportation service(s) available at or near the site of the proposed action? c. Are any pedestrian accommodations or bicycle routes available on or near site of the proposed action? 9. Does the proposed action meet or exceed the state energy code requirements? If the proposed action will exceed requirements, describe design features and technologies: 10. Will the proposed action connect to an existing public/private water supply? NO YES N/A NO NO NO NO NO YES YES YES YES YES If No, describe method for providing potable water: N/A - no water required 11. Will the proposed action connect to existing wastewater utilities? If No, describe method for providing wastewater treatment: N/A - no sanitary sewer required 12. a. Does the site contain a structure that is listed on either the State or National Register of Historic Places? b. Is the proposed action located in an archeological sensitive area? 13. a. Does any portion of the site of the proposed action, or lands adjoining the proposed action, contain wetlands or other waterbodies regulated by a federal, state or local agency? b. Would the proposed action physically alter, or encroach into, any existing wetland or waterbody? If Yes, identify the wetland or waterbody and extent of alterations in square feet or acres: NO NO NO YES YES YES 14. Identify the typical habitat types that occur on, or are likely to be found on the project site. Check all that apply: Shoreline Forest Agricultural/grasslands Early mid-successional Wetland Urban Suburban 15. Does the site of the proposed action contain any species of animal, or associated habitats, listed by the State or Federal government as threatened or endangered? 16. Is the project site located in the 100 year flood plain? NO YES 17. Will the proposed action create storm water discharge, either from point or non-point sources? If Yes, a. Will storm water discharges flow to adjacent properties? NO YES NO YES b. Will storm water discharges be directed to established conveyance systems (runoff and storm drains)? If Yes, briefly describe: NO YES The proposed stormwater design will adhere to City of Auburn stormwater regulations as the site is less than one-half acre. Proposed mitigation may include a bioretention basin and connection to the municipal stormwater line on Park Avenue. NO YES Page 2 of

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15 Project: Date: Agency Use Only [If applicable] Short Environmental Assessment Form Part 2 - Impact Assessment Part 2 is to be completed by the Lead Agency. Answer all of the following questions in Part 2 using the information contained in Part 1 and other materials submitted by the project sponsor or otherwise available to the reviewer. When answering the questions the reviewer should be guided by the concept Have my responses been reasonable considering the scale and context of the proposed action? 1. Will the proposed action create a material conflict with an adopted land use plan or zoning regulations? 2. Will the proposed action result in a change in the use or intensity of use of land? 3. Will the proposed action impair the character or quality of the existing community? 4. Will the proposed action have an impact on the environmental characteristics that caused the establishment of a Critical Environmental Area (CEA)? 5. Will the proposed action result in an adverse change in the existing level of traffic or affect existing infrastructure for mass transit, biking or walkway? 6. Will the proposed action cause an increase in the use of energy and it fails to incorporate reasonably available energy conservation or renewable energy opportunities? 7. Will the proposed action impact existing: a. public / private water supplies? b. public / private wastewater treatment utilities? 8. Will the proposed action impair the character or quality of important historic, archaeological, architectural or aesthetic resources? 9. Will the proposed action result in an adverse change to natural resources (e.g., wetlands, waterbodies, groundwater, air quality, flora and fauna)? 10. Will the proposed action result in an increase in the potential for erosion, flooding or drainage problems? 11. Will the proposed action create a hazard to environmental resources or human health? No, or small impact may occur Moderate to large impact may occur Page 1 of 2

16 Agency Use Only [If applicable] Project: Date: Short Environmental Assessment Form Part 3 Determination of Significance For every question in Part 2 that was answered moderate to large impact may occur, or if there is a need to explain why a particular element of the proposed action may or will not result in a significant adverse environmental impact, please complete Part 3. Part 3 should, in sufficient detail, identify the impact, including any measures or design elements that have been included by the project sponsor to avoid or reduce impacts. Part 3 should also explain how the lead agency determined that the impact may or will not be significant. Each potential impact should be assessed considering its setting, probability of occurring, duration, irreversibility, geographic scope and magnitude. Also consider the potential for shortterm, long-term and cumulative impacts. Check this box if you have determined, based on the information and analysis above, and any supporting documentation, that the proposed action may result in one or more potentially large or significant adverse impacts and an environmental impact statement is required. Check this box if you have determined, based on the information and analysis above, and any supporting documentation, that the proposed action will not result in any significant adverse environmental impacts. Name of Lead Agency Print or Type Name of Responsible Officer in Lead Agency Signature of Responsible Officer in Lead Agency Date Title of Responsible Officer Signature of Preparer (if different from Responsible Officer) Page 2 of 2

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24 110 FAYETTE STREET M ANLIUS, NEW YORK December 11, 2017 Mr. Stephen Selvek, Senior Planner Memorial City Hall 24 South Street Auburn, NY Re: Auburn Community Hospital Parking Lot 17 Lansing Street / 7 Park Avenue Auburn, NY Stormwater Analysis Dear Mr. Selvek: This letter provides a summary of the stormwater runoff rates for the parking improvements at 17 Lansing Street in the City of Auburn. The proposed project includes adding a driveway off Park Avenue for the proposed parking lot on the north side of the Hospital to accommodate 41 new parking spaces and an 8-foot wide maintenance path. The existing hydrologic analysis of the site includes one drainage area. Drainage Area 1 (DA-1) consists of a small area that drains north to a catch basin on Park Avenue and includes an existing gravel driveway, a portion of the Park Avenue roadway, an existing one-story garage and grass area, as seen in Attachment A. In the proposed condition, DA-1 is divided into three drainage areas (DA-1 through DA-3), as seen in Attachment A. The proposed conditions produce a greater runoff than existing conditions; therefore the runoff must be mitigated as per the City of Auburn. Two detention basins are proposed at the northern side of the site with outlets that drains towards Park Avenue. The proposed conditions will have negligible impact on the hydrologic analysis of the site for the 1-Year, 10-Year Storm and 100-Year Storm, as seen in the table below. The analysis can be reviewed in Attachments B and C. Existing Condition Developed Condition Precipitation Event Peak Rate of Runoff Peak Rate of Runoff 1-Year, 24-Hour 0.76 cfs 0.59 cfs 10-Year, 24-Hour 1.90 cfs 1.37 cfs 100-Year, 24-Hour 3.95 cfs 3.71 cfs If you have any questions or comments, please feel free to contact us at (315) Sincerely, NAPIERALA CONSULTING Professional Engineer, P.C. Matthew R. Napierala, P.E. PH FAX MNAP@NAPCON.COM

25 Attachment A - Existing and Proposed Drainage Areas

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27 Attachment B- Existing Condition HydroCAD Report

28 DA-1 DA-1 Subcat Reach Pond Link Routing Diagram for EXCON,

29 EXCON Page 2 Area (acres) CN Description (subcatchment-numbers) >75% Grass cover, Good, HSG C (DA-1) Paved parking, HSG C (DA-1) TOTAL AREA Area Listing (all nodes)

30 EXCON Page 3 Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers HSG A HSG B HSG C DA HSG D Other TOTAL AREA

31 EXCON Type II 24-hr 1-YR Rainfall=1.95" Page 4 Time span= hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment DA-1: DA-1 Runoff Area=0.674 ac 42.28% Impervious Runoff Depth>0.64" Flow Length=390' Tc=8.4 min CN=84 Runoff=0.76 cfs af Total Runoff Area = ac Runoff Volume = af Average Runoff Depth = 0.64" 57.72% Pervious = ac 42.28% Impervious = ac

32 EXCON Type II 24-hr 1-YR Rainfall=1.95" Page 5 Summary for Subcatchment DA-1: DA-1 Runoff = hrs, Volume= af, Depth> 0.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=1.95" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Sheet Flow, Sheet Grass: Short n= P2= 2.28" Shallow Concentrated Flow, Grass Unpaved Kv= 16.1 fps Shallow Concentrated Flow, Road Paved Kv= 20.3 fps Total Subcatchment DA-1: DA-1 Hydrograph Flow (cfs) cfs Type II 24-hr 1-YR Rainfall=1.95" Runoff Area=0.674 ac Runoff Volume=0.036 af Runoff Depth>0.64" Flow Length=390' Tc=8.4 min CN=84 Runoff Time (hours)

33 EXCON Type II 24-hr 10-YR Rainfall=3.28" Page 6 Time span= hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment DA-1: DA-1 Runoff Area=0.674 ac 42.28% Impervious Runoff Depth>1.61" Flow Length=390' Tc=8.4 min CN=84 Runoff=1.90 cfs af Total Runoff Area = ac Runoff Volume = af Average Runoff Depth = 1.61" 57.72% Pervious = ac 42.28% Impervious = ac

34 EXCON Type II 24-hr 10-YR Rainfall=3.28" Page 7 Summary for Subcatchment DA-1: DA-1 Runoff = hrs, Volume= af, Depth> 1.61" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.28" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Sheet Flow, Sheet Grass: Short n= P2= 2.28" Shallow Concentrated Flow, Grass Unpaved Kv= 16.1 fps Shallow Concentrated Flow, Road Paved Kv= 20.3 fps Total Subcatchment DA-1: DA-1 Hydrograph Flow (cfs) cfs Type II 24-hr 10-YR Rainfall=3.28" Runoff Area=0.674 ac Runoff Volume=0.091 af Runoff Depth>1.61" Flow Length=390' Tc=8.4 min CN=84 Runoff Time (hours)

35 EXCON Type II 24-hr 100-YR Rainfall=5.51" Page 8 Time span= hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment DA-1: DA-1 Runoff Area=0.674 ac 42.28% Impervious Runoff Depth>3.49" Flow Length=390' Tc=8.4 min CN=84 Runoff=3.95 cfs af Total Runoff Area = ac Runoff Volume = af Average Runoff Depth = 3.49" 57.72% Pervious = ac 42.28% Impervious = ac

36 EXCON Type II 24-hr 100-YR Rainfall=5.51" Page 9 Summary for Subcatchment DA-1: DA-1 Runoff = hrs, Volume= af, Depth> 3.49" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 100-YR Rainfall=5.51" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) Sheet Flow, Sheet Grass: Short n= P2= 2.28" Shallow Concentrated Flow, Grass Unpaved Kv= 16.1 fps Shallow Concentrated Flow, Road Paved Kv= 20.3 fps Total Subcatchment DA-1: DA-1 Hydrograph Flow (cfs) cfs Type II 24-hr 100-YR Rainfall=5.51" Runoff Area=0.674 ac Runoff Volume=0.196 af Runoff Depth>3.49" Flow Length=390' Tc=8.4 min CN=84 Runoff Time (hours)

37 Attachment C- Proposed Condition HydroCAD Report

38 DP-1 (new Reach) DA-1 1P 2P DA-1 Pond Pond DA-2 DA-3 DA-2 DA-3 Subcat Reach Pond Link Routing Diagram for PRCON,

39 PRCON Page 2 Area (acres) CN Description (subcatchment-numbers) >75% Grass cover, Good, HSG C (DA-1, DA-2, DA-3) Paved parking, HSG C (DA-1, DA-2, DA-3) TOTAL AREA Area Listing (all nodes)

40 PRCON Page 3 Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers HSG A HSG B HSG C DA-1, DA-2, DA HSG D Other TOTAL AREA

41 PRCON Page 4 Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) Pipe Listing (all nodes) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 1P

42 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 5 Time span= hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment DA-1: DA-1 Subcatchment DA-2: DA-2 Subcatchment DA-3: DA-3 Reach DP-1: (new Reach) Pond 1P: Pond Pond 2P: Pond Runoff Area=0.207 ac 44.93% Impervious Runoff Depth>0.69" Tc=6.0 min CN=85 Runoff=0.27 cfs af Runoff Area=0.331 ac 71.90% Impervious Runoff Depth>1.04" Tc=6.0 min CN=91 Runoff=0.63 cfs af Runoff Area=0.136 ac 61.76% Impervious Runoff Depth>0.91" Tc=6.0 min CN=89 Runoff=0.23 cfs af Inflow=0.59 cfs af Outflow=0.59 cfs af Peak Elev=718.31' Storage=249 cf Inflow=0.63 cfs af Outflow=0.34 cfs af Peak Elev=719.90' Storage=421 cf Inflow=0.23 cfs af Outflow=0.00 cfs af Total Runoff Area = ac Runoff Volume = af Average Runoff Depth = 0.90" 38.43% Pervious = ac 61.57% Impervious = ac

43 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 6 Summary for Subcatchment DA-1: DA-1 Runoff = hrs, Volume= af, Depth> 0.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=1.95" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-1: DA-1 Hydrograph Flow (cfs) cfs Type II 24-hr 1-YR Rainfall=1.95" Runoff Area=0.207 ac Runoff Volume=0.012 af Runoff Depth>0.69" Tc=6.0 min CN=85 Runoff Time (hours)

44 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 7 Summary for Subcatchment DA-2: DA-2 Runoff = hrs, Volume= af, Depth> 1.04" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=1.95" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-2: DA-2 Hydrograph Flow (cfs) cfs Type II 24-hr 1-YR Rainfall=1.95" Runoff Area=0.331 ac Runoff Volume=0.029 af Runoff Depth>1.04" Tc=6.0 min CN=91 Runoff Time (hours)

45 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 8 Summary for Subcatchment DA-3: DA-3 Runoff = hrs, Volume= af, Depth> 0.91" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 1-YR Rainfall=1.95" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-3: DA-3 Hydrograph Flow (cfs) cfs Time (hours) Type II 24-hr 1-YR Rainfall=1.95" Runoff Area=0.136 ac Runoff Volume=0.010 af Runoff Depth>0.91" Tc=6.0 min CN= Runoff

46 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 9 Summary for Reach DP-1: (new Reach) [40] Hint: Not Described (Outflow=Inflow) Inflow Area = ac, 61.57% Impervious, Inflow Depth > 0.73" for 1-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= hrs, dt= 0.05 hrs Reach DP-1: (new Reach) Hydrograph cfs 0.59 cfs Inflow Area=0.674 ac Inflow Outflow Flow (cfs) Time (hours)

47 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 10 Summary for Pond 1P: Pond Inflow Area = ac, 71.90% Impervious, Inflow Depth > 1.04" for 1-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 47%, Lag= 5.7 min Primary = hrs, Volume= af Routing by Stor-Ind method, Time Span= hrs, dt= 0.05 hrs Peak Elev= hrs Surf.Area= 307 sf Storage= 249 cf Plug-Flow detention time= 10.9 min calculated for af (99% of inflow) Center-of-Mass det. time= 8.1 min ( ) Volume Invert Avail.Storage Storage Description # ' 1,173 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) ,173 Device Routing Invert Outlet Devices #1 Primary ' 8.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) Coef. (English) #2 Primary ' 4.0" Round Culvert L= 20.0' CPP, projecting, no headwall, Ke= Inlet / Outlet Invert= ' / ' S= '/' Cc= n= 0.013, Flow Area= 0.09 sf Primary OutFlow Max= hrs HW=718.30' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Culvert (Barrel Controls fps) Pond 1P: Pond Hydrograph cfs Inflow Area=0.331 ac Peak Elev=718.31' Storage=249 cf Inflow Primary 0.45 Flow (cfs) cfs Time (hours)

48 PRCON Type II 24-hr 1-YR Rainfall=1.95" Page 11 Summary for Pond 2P: Pond Inflow Area = ac, 61.76% Impervious, Inflow Depth > 0.91" for 1-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 98%, Lag= min Primary = hrs, Volume= af Routing by Stor-Ind method, Time Span= hrs, dt= 0.05 hrs Peak Elev= hrs Surf.Area= 295 sf Storage= 421 cf Plug-Flow detention time= min calculated for af (6% of inflow) Center-of-Mass det. time= min ( 1, ) Volume Invert Avail.Storage Storage Description # ' 450 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) Device Routing Invert Outlet Devices #1 Primary ' 4.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) Coef. (English) Primary OutFlow Max= hrs HW=719.90' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls fps) Pond 2P: Pond Hydrograph cfs Inflow Area=0.136 ac Peak Elev=719.90' Storage=421 cf Inflow Primary 0.16 Flow (cfs) cfs Time (hours)

49 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 12 Time span= hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment DA-1: DA-1 Subcatchment DA-2: DA-2 Subcatchment DA-3: DA-3 Reach DP-1: (new Reach) Pond 1P: Pond Pond 2P: Pond Runoff Area=0.207 ac 44.93% Impervious Runoff Depth>1.69" Tc=6.0 min CN=85 Runoff=0.65 cfs af Runoff Area=0.331 ac 71.90% Impervious Runoff Depth>2.18" Tc=6.0 min CN=91 Runoff=1.28 cfs af Runoff Area=0.136 ac 61.76% Impervious Runoff Depth>2.01" Tc=6.0 min CN=89 Runoff=0.49 cfs af Inflow=1.37 cfs af Outflow=1.37 cfs af Peak Elev=719.28' Storage=676 cf Inflow=1.28 cfs af Outflow=0.47 cfs af Peak Elev=720.03' Storage=450 cf Inflow=0.49 cfs af Outflow=0.47 cfs af Total Runoff Area = ac Runoff Volume = af Average Runoff Depth = 2.00" 38.43% Pervious = ac 61.57% Impervious = ac

50 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 13 Summary for Subcatchment DA-1: DA-1 Runoff = hrs, Volume= af, Depth> 1.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.28" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-1: DA-1 Hydrograph Flow (cfs) cfs Type II 24-hr 10-YR Rainfall=3.28" Runoff Area=0.207 ac Runoff Volume=0.029 af Runoff Depth>1.69" Tc=6.0 min CN=85 Runoff Time (hours)

51 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 14 Summary for Subcatchment DA-2: DA-2 Runoff = hrs, Volume= af, Depth> 2.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.28" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-2: DA-2 Hydrograph Flow (cfs) cfs Type II 24-hr 10-YR Rainfall=3.28" Runoff Area=0.331 ac Runoff Volume=0.060 af Runoff Depth>2.18" Tc=6.0 min CN=91 Runoff Time (hours)

52 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 15 Summary for Subcatchment DA-3: DA-3 Runoff = hrs, Volume= af, Depth> 2.01" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= hrs, dt= 0.05 hrs Type II 24-hr 10-YR Rainfall=3.28" Area (ac) CN Description Paved parking, HSG C >75% Grass cover, Good, HSG C Weighted Average % Pervious Area % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment DA-3: DA-3 Hydrograph Flow (cfs) cfs Type II 24-hr 10-YR Rainfall=3.28" Runoff Area=0.136 ac Runoff Volume=0.023 af Runoff Depth>2.01" Tc=6.0 min CN=89 Runoff Time (hours)

53 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 16 Summary for Reach DP-1: (new Reach) [40] Hint: Not Described (Outflow=Inflow) Inflow Area = ac, 61.57% Impervious, Inflow Depth > 1.82" for 10-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= hrs, dt= 0.05 hrs Reach DP-1: (new Reach) Hydrograph 1.37 cfs 1.37 cfs Inflow Area=0.674 ac Inflow Outflow 1 Flow (cfs) Time (hours)

54 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 17 Summary for Pond 1P: Pond Inflow Area = ac, 71.90% Impervious, Inflow Depth > 2.18" for 10-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 64%, Lag= 7.7 min Primary = hrs, Volume= af Routing by Stor-Ind method, Time Span= hrs, dt= 0.05 hrs Peak Elev= hrs Surf.Area= 580 sf Storage= 676 cf Plug-Flow detention time= 13.6 min calculated for af (100% of inflow) Center-of-Mass det. time= 11.7 min ( ) Volume Invert Avail.Storage Storage Description # ' 1,173 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) ,173 Device Routing Invert Outlet Devices #1 Primary ' 8.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) Coef. (English) #2 Primary ' 4.0" Round Culvert L= 20.0' CPP, projecting, no headwall, Ke= Inlet / Outlet Invert= ' / ' S= '/' Cc= n= 0.013, Flow Area= 0.09 sf Primary OutFlow Max= hrs HW=719.27' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 2=Culvert (Barrel Controls fps) Pond 1P: Pond Hydrograph cfs Inflow Area=0.331 ac Peak Elev=719.28' Storage=676 cf Inflow Primary Flow (cfs) 0.47 cfs Time (hours)

55 PRCON Type II 24-hr 10-YR Rainfall=3.28" Page 18 Summary for Pond 2P: Pond [93] Warning: Storage range exceeded by 0.03' Inflow Area = ac, 61.76% Impervious, Inflow Depth > 2.01" for 10-YR event Inflow = hrs, Volume= af Outflow = hrs, Volume= af, Atten= 5%, Lag= 4.7 min Primary = hrs, Volume= af Routing by Stor-Ind method, Time Span= hrs, dt= 0.05 hrs Peak Elev= hrs Surf.Area= 306 sf Storage= 450 cf Plug-Flow detention time= min calculated for af (57% of inflow) Center-of-Mass det. time= 63.8 min ( ) Volume Invert Avail.Storage Storage Description # ' 450 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) Device Routing Invert Outlet Devices #1 Primary ' 4.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) Coef. (English) Primary OutFlow Max= hrs HW=720.03' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls fps) Pond 2P: Pond Hydrograph cfs 0.47 cfs Inflow Area=0.136 ac Peak Elev=720.03' Storage=450 cf Inflow Primary 0.35 Flow (cfs) Time (hours)