APPENDIX A DEFINITIONS D OW N S T R E A M D E T E N T I O N A NA LYS I S P RO C E D U R E S TA F F E VA LUAT I O N O F C A S E S T U D I E S P RO J E C T P RO F O R M A A NA LYS I S - S I N G L E FA M I LY R E S I D E N T I A L REFERENCES P RO J E C T T E A M 102 City of Charlotte Cost Analysis APPENDIX DEFINITIONS C A S E S T U DY # 7 PC C O C E N T R A L C ATAW BA BEST MANAGEMENT PRACTICES (BMP) U N D I S T U R B E D O P E N S PA C E A S P E R P C C O A structural management facility used singularly or in combination for Land that consists of natural areas containing trees and other natural storm water quality and quantity treatment to achieve water quality shrubs consisting of either undisturbed areas or disturbed areas that have protection goals. (PCCO) been replanted in accordance with the criteria established by ordinance. B U I LT U P O N A R E A ( B U A ) O P E N S PA C E A S P E R C H A R L O T T E Z O N I N G O R D I N A N C E BUA is the portion of a project that is covered by impervious or partially A n a r e a o f l a n d o r w a t e r, w h i c h i s o p e n a n d u n o b s t r u c t e d i n c l u d i n g impervious surface including, but not limited to buildings; pavement and areas maintained in a natural or undisturbed character or areas gravel areas such as roads, parking lots and paths; and recreation facilities improved for active or passive recreation. “Open space” shall not such as tennis courts. BUA does not include wooden slatted deck, the water include water below the mean high water line located adjacent to the area of a swimming pool, or pervious or partially pervious paving materials C a t a w b a R i v e r a n d i t ’s i m p o u n d m e n t s , o r a r e a s c o v e r e d w i t h b u i l d i n g s , to the extent that the paving material absorbs water or allows water to structures, streets or off-street parking areas, but shall include infiltrate through a paving material. landscaping associated with such parking areas. BUFFER POST CONSTRUCTION CONTROLS ORDINANCE (PCCO) A natural or vegetated area through which stormwater runoff flows in a Final stakeholders consensus document, dated October 4, 2005, of the diffuse manner so that the runoff does not become channelized and which P o s t - C o n s t r u c t i o n S t o r m Wa t e r O r d i n a n c e . provides for infiltration of the runoff and filtering of pollutants. RE-DEVELOPMENT DWELLING UNITS PER ACRE (DUA) Rebuilding activities on land containing built upon area. The number of dwelling units per acre of land determined by dividing the number of dwelling units by the total number of acres in the parcel to be developed. S U R FA C E WAT E R I M P R O V E M E N T A N D M A N A G E M E N T ( S . W. I . M . ) B U F F E R S Chapter 12, Part 8 of the Code of City of Charlotte as amended by petition DESIGN STORM FREQUENCY No. 99-119 Frequency is the average time interval between equal magnitude floods. For example, a 25-year flood has the probability of occurrence of once every 25 T O TA L P H O S P H O R U S ( T P ) y e a r s o n t h e a v e r a g e , o r a 4 % c h a n c e o f o c c u r r e n c e i n a n y g i v e n y e a r. A nutrient that is essential to the growth of organisms but when it occurs in high enough concentrations it can negatively impact water quality GENERAL DEVELOPMENT POLICIES: PHASE II ENVIRONMENT (GDP-E) c o n d i t i o n s . To t a l p h o s p h o r u s i n c l u d e s b o t h d i s s o l v e d a n d s u s p e n d e d D r a f t g u i d i n g p r i n c i p l e s a n d p o l i c y s t a t e m e n t s f o r a i r, l a n d a n d w a t e r, a s forms of reactive phosphorus, acid hydrolysable phosphorus and organic revised at the 1-18-06 stakeholder meeting. p h o s p h o r u s a s m e a s u r e d b y S t a n d a r d M e t h o d 4 5 0 0 - P. I M P E RV I O U S G R O U N D C O V E R T O TA L S U S P E N D E D S O L I D S ( T S S ) Any structure or ground cover consisting of asphalt, concrete, stone, brick, To t a l s u s p e n d e d m a t t e r i n w a t e r w h i c h i n c l u d e s p a r t i c l e s c o l l e c t e d o n a terrazzo, roofing, ceramic tile or any other natural or man-made material filter with pore size of 2 microns as measured by Standard Method 2540-D, that prevents the absorption of water into the soil. which is commonly expressed as a concentration in terms of milligrams per liter (mg/L) or parts per million (PPM). M I T I G AT I O N Actions taken either on-site or off-site as allowed by ordinance to offset the T R A N S I T S TAT I O N A R E A A N D D I S T R E S S E D B U S I N E S S D I S T R I C T impacts of a certain action. Areas designated by the planning director based on c o r r i d o r r e c o r d o f decisions or designated by the economic developm e n t d i r e c t o r a s d i s t r e s s e d . 103 APPENDIX DOWNSTREAM DETENTION C A S E S T UANALYSIS DY # 7 P C C OPROCEDURE C E N T R A L C ATAW BA 104 City of Charlotte Cost Analysis APPENDIX STAFF EVALUATION A S E S TSTUDIES U DY # 7 OF CCASE PC C O C E N T R A L C ATAW BA ENVIRONMENTALLY SENSITIVE AREAS PROTECTED OR MITIGATED 1 FACILITATES ALTERNATIVE MODES OF TRANSPORTATION & REDUCED GROUND LEVEL TEMPERATURES MINIMIZES IMPACT TO NATURAL FEATURES REDUCES AMOUNT & IMPROVES QUALITY OF STORM WATER RUN-OFF PROMOTES EFFICIENT WATER USE 5 S I N G L E - FA M I LY CASE STUDY #1: USDG YES YES2,3 YES 4 NO N/A CASE STUDY #2: MIN PERMIT REQ. YES YES YES YES N/A CASE STUDY #3: PCCO –CENTRAL YES YES YES YES N/A CASE STUDY #4: PCCO - WESTERN YES YES YES YES N/A CASE STUDY #5: PCCO-YADKIN YES YES YES YES N/A CASE STUDY #6: PCCO –TRANSIT N/A6 YES N/A6 YES N/A CASE STUDY #7: PCCO-CENTRAL N/A6 YES N/A6 YES N/A YES N/A8 YES YES N/A CASE STUDY #9: MIN PERMIT REQ. N/A7 YES N/A YES N/A CASE STUDY #10: PCCO-CENTRAL N/A7 YES N/A YES N/A URBAN INFILL M U LT I - FA M I LY CASE STUDY #8: PCCO-CENTRAL COMMERCIAL Notes: 1. Because the GDP-E has not yet been adopted the GIS layers have not been developed that could be used as a tool to help assess whether the site plan has met the intent of this policy. In the absence of such a formalized tool, staff used information available from the consultant’s knowledge of existing conditions and recent aerials to evaluate the example sites. 2. Required street tress shade asphalt. 3. USDG provide connectivity which encourages walking and biking. 4. Preserves wetlands and respects floodplain. 5. Not applicable. Staff did not think the efficient use of water was applicable to any of the case studies reviewed. 6. Site was already developed and there were no environmentally sensitive areas or natural features remaining. 7. Little information was available on this site regarding existing conditions since it had been developed for several years. Therefore, due to the previous agricultural use of the site, it was assumed that there were no environmentally sensitive areas or natural features remaining to be protected. 8. Site is disconnected from surrounding area and thus does not facilitate walking or bicycling. But because the surrounding area has already been developed without connections, there is no opportunity for this site to connect. 105 106 City of Charlotte Cost Analysis APPENDIX URBAN INFILL PROFORMA EXIS D I# T I6O N S CT AIS SNE EGS SCT TO UN DY #7 C A U DY ANALYSIS P C C O C E N T R A L BA PC C O C E N T R A L C ATAW 107 URBAN INFILL P RO J E C T OV E RV I E W PROFORMA C S CA AANALYSIS SE ES ST TU UDY DY # #6 7 RATAW AL P C C OP C C EO N TCREANLTC BA 108 City of Charlotte Cost Analysis APPENDIX URBAN INFILL PROFORMA EXIS D I# T I6O N S CT AIS SNE EGS SCT TO UN DY #7 C A U DY ANALYSIS P C C O C E N T R A L BA PC C O C E N T R A L C ATAW 109 URBAN INFILL P RO J E C T OV E RV I E W REFERENCES C CA AS SE ES ST TU UDY DY # #6 7 RATAW AL P C C OP C C EO N TCREANLTC BA REFERENCES LIST 1. Final Stakeholders’ Consensus Document Charlotte Mecklenburg Post-Construction Storm Water Ordinance, Developed by the Post Construction Ordinance Stakeholders Group, April 2004 Through September 2005. 2. General Development Guidelines, Attachment #2, General Development Policies: Phase II, Draft Guiding Principles and Policy Statements for A i r, L a n d , a n d Wa t e r. 3. 110 U r b a n S t r e e t D e s i g n G u i d e l i n e s , D r a f t f o r P u b l i c R e v i e w, S p r i n g 2 0 0 5 . City of Charlotte Cost Analysis APPENDIX URBAN INFILL E XPROJECT IS D I# T I6O N S TEAM CT AIS SNE EGS SCT TO UN DY #7 C A U DY P C C O C E N T R A L BA PC C O C E N T R A L C ATAW Engineering & Property Management City of Charlotte 600 East Fourth Street Charlotte, NC 28202-2953 T: 7 0 4 . 3 3 6 . 3 9 2 7 F: 704.336.7927 Contact: Jeff Hieronymus - jhieronymus@ci.charlotte.nc.us LandDesign 223 North Graham Street Charlotte, NC 28202 T: 7 0 4 . 3 3 3 . 0 3 2 5 F: 704.376.8235 C o n t a c t : K e v i n Vo g e l , P E - k v o g e l @ l a n d d e s i g n . c o m US Infrastructure of Carolina, Inc. (USI) 1043 E. Morehead Street, Suite 203 Charlotte, NC 28204 T: 7 0 4 . 3 4 2 . 3 0 0 7 F: 704.342.1666 Contact: Stephen R. Sands PE - sandss@usi-eng.com Ti m m o n ’s Ti m b e r s , I n c 1 7 3 2 4 Yo u n g b l o o d R o a d Charlotte, NC 28278 C o n t a c t : B o b Ti m m o n s - c r t - b o t t o m l i n e @ c a r o l i n a . r r. c o m Sharpe Images (SBE) 4832 Dwight Evans Rd. Charlotte NC 28217 T: 7 0 4 . 3 7 7 . 3 7 6 0 F: 704.525.0865 111