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
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DEFINITIONS
C A S E S T U DY # 7
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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 .
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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.
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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 .
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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
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