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Home My WebLink AboutNCS000240_2022 Annual Report_20221028City of Charlotte NPDES IVIS4 Permit Program FY2022 Annual Report Stormwater Management Program Plan • CHARLOTTESM Permit Number NCS000240 October 2022 City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOI YE.. City of Charlotte FY2022 NPDES MS4 Permit Annual Report Certification By my signature below, I certify, under penalty of law, that I am a Duly Authorized Representative and this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. Name: Mike Davis, PE Title: Director of Charlotte Storm Water Services Signature: Date: 10/25/2022 City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE,. Table of Contents Section 1 Introduction................................................................................................1 Section 2 Background Information..........................................................................2 Section 3 Public Education and Outreach Program...............................................3 Section 4 Public Involvement and Participation Program...................................13 Section 5 Illicit Discharge Detection and Elimination Program ..........................20 Section 6 Construction Site Stormwater Runoff Control Program.....................30 Section 7 Post -Construction Stormwater Management Program .......................34 Section 8 Pollution Prevention/Good Housekeeping Program .............................39 Section 9 Program to Monitor and Control Pollutants in Stormwater Discharges to Municipal Systems...........................................................48 Section 10 Water Quality Assessment and Monitoring Program ..........................52 Section 11 Total Maximum Daily Load (TMDL) Program....................................56 ii IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Section 1: Introduction On November 1, 1993, the City of Charlotte ("City") began operating under National Pollutant Discharge Elimination System ("NPDES") Municipal Separate Storm Sewer System ("MS4") Permit Number NCS000240. This permit has subsequently been renewed for a 5-year permit term on four occasions and is currently in its 5th permit cycle effective October 10, 2018 through October 9, 2023. This document provides the Annual Report for the Stormwater Management Program Plan ("SWMP") for fiscal year ("FY") 2022 under the current permit term as required by Part III, paragraph 2 and Part IV, paragraph B of the NPDES MS4 permit. The overall objective of this Annual Report is to document activities conducted in support of the SWMP during FY2022 (July 1, 2021 to June 30, 2022), assess program effectiveness, and discuss future proposed program activities and/or SWMP changes as necessary. Charlotte Storm Water Services ("CSWS") is the primary agency responsible for managing the City's NPDES MS4 permit, the MS4 system and the SWMP. The implementation of the requirements within the permit program and SWMP are coordinated with other applicable City departments as necessary. In addition, coordination is conducted with the NPDES MS4 permit programs for the jurisdictions in Mecklenburg County adjacent to the City where appropriate and feasible. This coordination is conducted to help ensure uniformity between the local NPDES MS4 stormwater permit programs and jurisdictions. Mecklenburg County stormwater staff along with CSWS staff collectively form Charlotte -Mecklenburg Storm Water Services ("CMSWS"). City and County surface water quality staff within CMSWS work together to accomplish many of the activities discussed in this annual report. Included in this SWMP Annual Report are: • Best management practice(s) (`BMPs") that are being used to fulfill the program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. Staff of CSWS, under the direction of the City's Surface Water Quality and Environmental Permitting Program Manager, is responsible for the fulfillment of most of the activities discussed in this SWMP. Exceptions to this include the CSWS-Land Development Team ("CSWS-LD"), which was the primary group during FY2022 responsible for the Development and Redevelopment Plan Review and Construction Site Stormwater Runoff Control programs within the SWMP. In addition, the City's Department of Transportation -Street Maintenance Division and Solid Waste Services Department have responsibility for routine maintenance of certain portions of the MS4, in coordination with CSWS. Funding for the BMPs specified in the SWMP is provided by local stormwater utility fees, except where noted. • Cd-IARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Section 2: Background Information 2.1 Population Served The SWMP covers the jurisdictional area, including the incorporated area and extra territorial jurisdiction (ETJ), for the City of Charlotte, as applicable and defined by the NPDES MS4 permit. Table 2-1 provides the population for the City of Charlotte based on the 2010 and 2020 US census. Table 2-1: Population and Growth Rate for the City of Charlotte. 2021 Population (estimated) 2020 Population 2010 Population Average Annual Percent Change (2010-2020) 879,709 874,579 731,424 1.95% 2.2 Growth Rate Table 2-1 shows the population growth rate represented as an "Average Annual Percent Change" for the City of Charlotte. This growth rate was calculated by dividing the overall percent change between the 2010 and 2020 Census data by the 10-year interval period. 2.3 Jurisdictional and MS4 Service Areas The jurisdictional and MS4 service area for the City is provided in Table 2-2. The source of this information is the City of Charlotte Planning, Design and Development Department, which updates jurisdictional and geographical boundaries as annexations occur. Fable 2-2: Jurisdictional and MS4 Service Area for the l l of Charlotte. Incor orated Area (Sq. Miles ETJ (Sq. Miles) Total Jurisdiction (Sq. Miles) 310 1 67 1 377 2.4 MS4 Conveyance System The existing MS4 serving the City is composed of street curbs, gutters, catch basins, culverts, pipes, ditches, and outfalls that collect and convey stormwater for discharge to receiving streams. Maintenance and improvements to the MS4 system are funded by stormwater utility fees collected within the City. Maintenance activities include cleaning inlets of debris and sediment, maintaining channels to reduce erosion and maximize pollution reduction capabilities, and the removal of blockages. Improvements to the MS4 system include solving infrastructure problems, channel stabilization, safety improvements, stream habitat enhancement, surface water quality enhancement, and resolving flooding problems associated with stormwater generated from public streets. 2 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Section 3: Public Education and Outreach Program During the annual report period, the Public Education and Outreach Program distributed educational information to the community and conducted outreach activities focused on the impacts of stormwater discharges on water bodies. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 3.1 BMP Summary Table Table 3-1 provides information concerning the BMPs implemented to fulfill the Public Education and Outreach Program requirements. Table 3-1: BMP Summary Table for the Public Education and Outreach Pro ram. Implementation BMP Description Status for Annual Report Period Describe target Describe the target pollutants and target pollutant sources the pollutants and permittee's public education program is designed to address and why Yes - Implemented target pollutant they are an issue. sources Describe target Describe the target audiences likely to have significant stormwater Yes - Implemented audiences impacts and why they were selected. Informational Web The permittee shall promote and maintain an internet web site Yes - Implemented Site designed to convey the ro am's message. Distribute public Distribute general stormwater educational material to appropriate education materials target groups as likely to have a significant stormwater impact. Yes - Implemented to identified user groups. Promote and Promote and maintain a stormwater hotline(s) or helpline(s) for the maintain public to request information about stormwater, public involvement Yes - Implemented Hotline/Help line & participation, and to report illicit connections & discharges, etc. Implement a Public The permittee's outreach program, including those elements Education and implemented locally or through a cooperative agreement, shall Outreach Program. include a combination of approaches designed to reach the target Yes - Implemented audiences. For each media, event, or activity the permittee shall estimate and record the extent of exposure. IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARI. VIT. 3.2 Target Pollutants and Sources Table 3-2 provides the specific target pollutants and sources determined by the City for the annual report year. Table 3-2: Targeted Pollution Sources for the Public Education and Outreach Program. Target Pollutant Pollution Source Issue Bacteria Improper Waste Disposal Many surface waters in Charlotte are impaired due to high fecal Sanitary Sewer Overflows coliform levels. Improper handling and disposal of wastes can Pet Waste result in the discharge of a variety of pollutants to the storm drainage system, causing increases in harmful bacteria. Discharges of food wastes such as fats, oils, and greases to the sanitary sewer system can result in line blockages that cause sanitary sewer overflows. Improper disposal of pet waste can also cause discharges of bacteria to the storm drainage system. Sediment Construction Erosion Many surface waters in Charlotte are impaired due to turbidity Stream Bank Erosion related to sediment discharges. Improper erosion control practices at construction sites can result in sediment discharges to the storm drainage system. In addition, uncontrolled volumes of stormwater runoff can cause scouring of stream banks resulting in increased sediment volumes in streams. 3.3 Target Audiences The City determined the following target audiences for the annual report period: • Multi -Family Residential Communities; • Construction Industry; • Commercial Sectors; • School -aged Children; • Pet Owners; and • Diverse and under -represented audiences. 3.4 Informational Website A significant number of resources are utilized to promote and maintain the City's website Stormwater.CharMeck.org which continues to be one of the best ways to provide the public with surface water quality information. Table 3-3 shows the number of website advertisements, impressions, page views, and the number of unique page views. Table 3-3: Website Program Results Activit Results Website advertisements run 38 Website advertising media impressions 2,637,703 Website pa e views 426,455 Website unique page views 178,115 • Cd-IARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report 3.5 Public Education Materials This outreach mechanism is used to target specific pollution sources associated with the public and industrial/commercial facilities including lawn care practices, handling of used oil and other automotive wastes, housekeeping techniques, etc. Table 3-5 shows the number of environmental notices/brochures distributed for the annual report period. 3.5.1 Promotional Items Promotional items are designed and distributed to complement outreach activities such as group presentations, workshops and public events. All promotional items have the stormwater website and include other messages, such as the reporting hotline, as space allows. Table 3-4 shows the promotional items distributed. Table 3-4: Promotional Items Promotional Item Message Ink Pens Six rotating messages — report pollution, street to stream, volunteer, turn around don't drown, flooding can happen anywhere, buy flood insurance Umbrella Rain Gauge General stormwater information; Stormwater. CharMeck. or Flashlight General stormwater information; Stormwater. CharMeck. or Sunscreen General stormwater information; Stormwater. CharMeck. or Stormy's Guide to Stormwater Coloring Book General stormwater information Hand Sanitizer Stormwater.CharMeck.org Stormy Stickers & Temporary Tattoos General stormwater information; Stormwater. CharMeck. or 3.5.2 Utility Bill Inserts CMSWS includes utility bill inserts in various monthly water/sewer utility bills issued by the Charlotte Water (CLT-W) department. The inserts focus on various topics which typically include volunteering, surface water quality, flooding, infrastructure and CMSWS services and fee changes. Table 3-5 shows the total number of stormwater related public educational materials distributed during the annual report period. Table 3-5: Public Education Materials Program Results ActivityResults Environmental notices/brochures issued 373 Utility bill inserts stormwater related mailed 1,413,615 5 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report 3.6 Public Reporting Mechanisms The City, in cooperation with Mecklenburg County, operates a joint customer service hotline (311) to receive information about a variety of concerns. Citizens can call 311 to report pollution, flooding, and blockages as well as submit requests for service to 311 using the CLT+ app or by going online to the "Report a Problem" section of the website. A variety of methods and events are used to promote the 311-reporting hotline and other reporting options including, but not limited to: • Giving away promotional products such as magnets and water bottles with CMSWS logo and 311 information; • Providing information about reporting pollution on the stormwater website; • Working with local TV stations to produce news segments focused on reporting pollution; • Buying media time and airing TV advertisements focused on reporting pollution; • Designing and mailing the utility bill inserts focused on various program topics and activities; and • Implementing vehicle wraps. Table 3-6 and Table 3-7 provide information about the number and type of callers that reported stormwater and surface water quality issues. Table 3-6: Public Reporting Program Results Activity Results CLT+ mobile app downloads 12,000 Public requests to hotline received stormwater related 7,653 Public reauests to hotline (Surface Water Oualitv) 440 Table 3-7: Surface Water Quality Service Request Source Summary Caller Type Service Requests Public Citizen 255 Business 13 Charlotte Fire Department staff 20 Charlotte -Mecklenburg Police Department staff 2 Charlotte Storm Water Services staff 34 Charlotte Water staff 38 Mecklenburg County Storm Water Services staff 47 State — NCDEQ staff 5 Environmental Protection A enc /NRC 5 Other 21 TOTAL 440 2 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 3.7 Stormwater Public Education and Outreach Program The City's Stormwater Public Education and Outreach Program provides surface water quality and pollution prevention messages to educate residents and businesses about the ways they can help protect surface water quality and get involved to help reduce stormwater pollution. The program provides these messages in the following ways: • Mass Media; • Social Media; • Public Hotline Promotion; • School Presentations; • Public Presentations and Events; • Website; • Public Education Materials; and • Special Campaigns and Programs. 3.7.1 Mass Media Significant resources are spent on providing surface water quality messages through mass media channels because they are one of the most effective ways to reach adult audiences. The media campaign focuses on four main themes: • Surface Water Quality; • Volunteering; • Flood Safety; and • Aging Infrastructure. Media channels utilized to promote events and messages consist of television and radio advertisements. Table 3-8 shows the data relative to these media channels for the annual report period. Table 3-8: Mass Media and Social Media ProLyram Results Activity Results Television advertising sots run 150 Radio advertising sots run 352 Television advertising media impressions 1,202,944 Radio advertising media impressions 1,413,600 Facebook fans 7,850 Insta ram followers 1,254 Twitter followers 1,492 YouTube page subscribers 165 Social media posts made 922 Total Social media engagements likes, replies, comments, shares 129,197 7 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 3.7.2 Social Media CMSWS continues efforts to build a social media presence as more and more people are receiving information through this media source. Four social media channels used by CMSWS are shown in Table 3-9. Table 3-9: Social Media Channels Social Media Account Name Handle URL Facebook CMSWS StormWaterCM https://www.facebook.com/StormWaterCM Twitter CMSWS @StormWaterCM ht s://twitter.com/StormWaterCM Insta ram CMSWS @StormWaterCM b�qps://www.instagram.com/stormwatercm/ YouTube CMSWS N/A b�qps://wwA.youtube.com/user/StonnWaterServices CMSWS posts various videos and news stories on its YouTube channel. CMSWS also provides more content, pictures and videos related to stormwater pollution, surface water quality, pollution prevention, flooding, and infrastructure messages on Facebook, Twitter and Instagram and boosts some posts to reach tens of thousands of users, all aimed at reflecting the diversity of the community. Table 3-8 shows the data relative to social media channels for the annual report period. 3.7.3 School Presentations During FY2022, CMSWS staff reached out to over 3,000 teachers about educational program offerings. Due to COVID-19 restrictions in FY2022, the number of presentations was lower than normal but only two of the twenty presentations overall were done virtually. Table 3-10 shows the data relative to the school presentations for the annual report period. 3.7.4 Public Presentations and Workshops A variety of surface water quality presentations and workshops are available from CMSWS to the public, interest groups, businesses and industrial facilities upon request. Each presentation, while similar in nature, is also changed depending on the topic of interest and the audience receiving the presentation. Table 3-10 shows the data relative to the public presentations for the annual report period. 3.7.5 Public Events CMSWS staff participates in a variety of community events that are used to promote education campaigns, give away promotional products, provide face-to-face education opportunities, and provide formal presentations on surface water quality topics when appropriate. Table 3-10 shows the data relative to public event participation for the annual report period. • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 3-10: Presentation and Event Program Results Activity Results School presentations conducted 20 Students educated at school presentations 1,989 Public presentations conducted 36 Residents educated at public presentations 1,174 Public events participated in 8 Residents interacted with at public events 745 3.7.6 Regional Stormwater Partnership The City is an active member of the Regional Stormwater Partnership of the Carolinas ("RSPC"); a partnership which includes 21 municipalities throughout the region that collaborate on meeting NPDES MS4 permit requirements, particularly education and outreach initiatives. Services and activities provided by the RSPC are documented in an annual Services Agreement. The RSPC's media campaign runs television, radio and web -based television advertisements to educate the regional public. A number of workshops are also provided to members and the public. Table 3-11 shows the data relative to these advertisements as well as other initiatives for the annual report period. Table 3-11: Regional Stormwater Partnership Program Results* Activity Television advertising sots run Results* 549 Radio advertising sots run 90 Television advertising media impressions (regular) 2,426,165 Television advertising media impressions web based 0** Radio advertising media impressions 463,500 Educational workshops and events conducted 6 Attendees at workshops and events conducted 1,314 Educators contacted about RSPC available resources 0** RSPC website visits 5,000 RSPC website unique users 3,621 * This data not included in summary data shown in Table 3-14 ** Not conducted during FY2022 3.7.7 Special Campaigns and Programs Pet Waste Campaign: CMSWS conducts a "Scoop the Poop" awareness campaign that targets pet owners as a way to educate them about surface water quality impacts from pet waste and the importance of cleaning it up. Vehicle Wraps: Vehicle wraps are a unique outreach tool for publicizing stormwater issues. The wraps serve to make a connection between clean water and healthy aquatic life; address the street to stream connection; smelly streams; and mud pollution. In addition to informing and educating, these wraps encourage residents to recognize and report pollution by calling 311. 0 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Stormy Mascot: CMSWS uses the mascot "Stormy the Turtle" in various education and outreach materials and in appearances at various events including parades, photo shoots, and festivals. Table 3-12 shows the data relative to this program for the annual report period. Creek Week: CMSWS participates in a nationwide program called Creek Week in order to bring more attention to the importance of creeks in the community. CMSWS partners with several other governmental and non-profit organizations to develop and market events that tie into the overall surface water quality theme. Table 3-12 shows the data relative to this program for the annual report period. Table 3-12: Special Campaign and Activity Program Results ActivityResults Stormy Mascot appearances at events 3 Creek Week events held 18 3.8 Measurable Goals/Planned Activities for Future Program Years Table 3-13 describes the various Public Education and Outreach BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 10 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE.. Table 3-13: BMP Measurable Goals for the Public Education and Outreach Program. Measurable Goals BMP Description BMP (by permit term ear 1 2 1 3 4 5+ Describe target Describe the target pollutants and target pollutant sources the permittee's Identify Review and update target pollution sources as necessary. pollutants and public education program is designed to address and why they are an issue. target (On -going, years 2 — 5+) target pollutant pollution sources sources utilizing monitoring and service re uest data Describe target Describe the target audiences likely to have significant stormwater impacts Identify Review and update target audiences as necessary. (On - audiences and why they were selected. target going, years 2 — 5+) audiences to adopt desired surface water quality improvement behaviors Informational Web The permittee shall promote and maintain an internet web site designed to Continue to maintain an informational website to provide program Site convey the pro ram's message. information to the public. (On -going, years 1 — 5+ Distribute public Distribute general stormwater educational material to appropriate target Distribute educational materials at public events, workshops and education materials groups as likely to have a significant stormwater impact. Instead of presentations. (On -going, years 1 — 5+) to identified user developing its own materials, the permittee may rely on state -supplied groups. Public Education and Outreach materials, as available, when implementing its own program. Promote and Promote and maintain a stormwater hotline/helpline. Maintain a hotline that receives information from the public 24 hours a day. maintain (On -going, years 1 — 5+) Hotline/Help line Implement a Public The permittee's outreach program, including those elements implemented Continue to implement a plan to conduct education & outreach activities, Education and locally or through a cooperative agreement, shall include a combination of including a media campaign, that address target pollutants and audiences. Outreach Program. approaches designed to reach the target audiences. For each media, event (On -going, years I — 5+) or activity, including those elements implemented locally or through a cooperative agreement the permittee shall estimate and record the extent of exposure. 11 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 3.9 Program Assessment The BMPs shown in Table 3-1 for the Public Education and Outreach Program were successfully implemented during the annual report period. Discussion in Section 3 provides more detailed information about implementation efforts. Table 3-14 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 3-14: Program Data Summary PUBLIC EDUCATION PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 Advertising spots (TV and Radio) 924 731 663 502 Advertising media impressions (TV and Radio) 6,063,651 6,970,584 4,160,065 2,616,544 Utility bill inserts (stormwater related) 1,330,520 1,530,000 1,407,000 1,413,615 Social Media Followers/Subscribers 8,927 9,340 10,054 10,596 Social media posts 620 648 986 922 Social media responses from public'- 1,045 1,240 14,819 129,197 Public requests to hotline (stormwater related) 8,934 9,104 7,810 7,653 Public requests to hotline (SWQ related) 553 605 445 440 Presentations (non -school) 135 55 29 36 Persons educated at presentations (non -school) 3,492 2,088 1,211 1,174 Public events 33 8 5 8 Citizens interacted with at public events 3,970 1,860 50 745 Website page views 376,617 381,610 417,437 426,455 1. FY2019 - 2020 data reported as social media public comments only. FY2021 - 2022 data included comments, replies, likes, and shares due to the upgraded method that the social media management platform used to report the data. 3.9.1 Assessment Summary Overall: A combination of evaluation tools indicates that the City's residents were successfully being exposed to surface water quality education messages. Staff has developed plans and performed research on potential methods that can be used to reach more diverse audiences and expand the outreach program. The following provides more detail regarding some of the numbers reported above. Target Pollutants and Audiences: The target pollutants for the education and outreach program are bacteria and sediment because these two pollutants are the primary pollutants causing impairment in local surface waters. As such, efforts are focused on target audiences and primarily aimed at reducing these target pollutants as well as other pollutants. Mass Media: CMSWS utilized traditional media such as television and radio as well as website advertisements and social media. Utility Bill Inserts: Eight utility bill inserts were created and mailed to residents. Two of those inserts included both English and Spanish messaging. 12 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Public Events & Public Presentations: The overall total number of presentations, public events and citizens interacted with has decreased but the number of presentations increased and is moving toward pre -pandemic numbers. School Presentations: The number of school presentations decreased but the number of students educated at school presentations remained steady. This is in part due to being able to offer virtual presentations to larger school groups. Website Page views: The number of website page views increased this fiscal year. Social Media: With social media becoming an increasingly used source of information for many people, CMSWS has focused more resources on this method of public education and outreach. CMSWS gained an additional 500 followers/subscribers to its social media channels. CMSWS also saw a large increase in social media engagement. There were 129,197 total engagements which includes likes, comments, saves, replies and shares. Public Requests: Calls from citizens as a group made up 58% of all calls, which was 47% higher than from the next most frequent caller type, Mecklenburg County Storm Water Services staff, which accounted for 11 % of calls. This is important information for targeting education campaigns related to pollution reporting. Public Opinion Survey Results: A Public Opinion Survey is conducted annually in order to gather data on our outreach campaigns. Of the respondents, 41% recall seeing information from CMSWS during the last 12 months. Mail/Utility bill inserts was shown to be the preferred method of communication with 54% of respondents choosing it as a preferred option. Section 4: Public Involvement and Participation Program During the annual report period, the Public Involvement and Participation Program provided opportunities for the public to participate in program development and implementation per the SWMP. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 4.1 BMP Summary Table Table 4-1 provides information concerning the BMPs implemented to fulfill the Public Involvement and Participation Program requirements. 13 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 4-1: BMP Summary Table for the Public Involvement and Partici ation Program. Implementation BMP4F BMP Description Status for Annual . Report Period Volunteer The permittee shall include and promote volunteer opportunities community designed to promote ongoing citizen participation. Yes - Implemented involvement program Establish a The permittee shall provide and promote a mechanism for public Mechanism involvement that provides for input on stormwater issues and the Yes - Implemented for Public stormwater program. involvement Establish The permittee shall promote and maintain a hotline/helpline for the Yes - Implemented Hotline/Help line purpose of public involvement and participation. Public Review and The permittee shall make copies of their most recent Stormwater Yes - Implemented Comment Plans available for public review and comment. Public Notice Pursuant to 122.34 the permittee must, at a minimum, comply with State, Tribal and local public notice requirements when Yes - Implemented implementing a public involvement/ participation program. 4.2 Volunteer Involvement Program 4.2.1 Storm Drain Marking Pro ram SDM) This program enables volunteers to adhere vinyl printed markers to storm drains along streets they select in their neighborhoods. CMSWS provides the decals, adhesive, safety vests and information forms for completion by the groups. Table 4-2 shows the data relative to this program for the annual report period. 4.2.2 Adopt -A -Stream Program (AAS) The objective of this program is for volunteers to "adopt" segments of streams and agree to walk them, picking up trash and reporting any pollution problems found along the way. The program not only serves as a public involvement initiative, but it also allows for interaction and observations of the City's streams by its citizens, which can lead to the identification and elimination of pollution sources. Table 4-2 shows the data relative to this program for the annual report period. 4.2.3 The Big SpringClean lean The Big Spring Clean is a one -day annual event promoted by CMSWS and the local organization Keep Mecklenburg Beautiful. The event is held on a selected Saturday morning during the spring season and typically provides seven to nine locations where citizens can go to remove trash from local streams. Table 4-2 shows the data relative to this program for the annual report period. 14 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 4-2: SDM, AAS, and Big S'limng Clean Program Results Activit Storm drains marked Results 1,020 Storm Drain Marking volunteers 144 Storm Drain Marking volunteer hours 311 Ado t-A-Stream groups 160 Ado t-A-Stream clean-ups 140 Ado t-A-Stream volunteers 2,232 Ado t-A-Stream volunteer hours 4,826 Ado t-A-Stream miles cleaned 101 Ado t-A-Stream trash collected tons 34 Big Spring Clean volunteers 313 Big Spring Clean volunteer hours 939 Big Spring Clean stream miles cleaned 12 Big Spring Clean trash collected tons 5.5 Illicit discharges detected through these programs' 6 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 4.2.4 Volunteer Monitoring The Volunteer Monitoring Program uses a Visual Assessment and Snapshot Assessment methodology. Visual assessment includes volunteers who are trained through an online video and online "Story Maps" about surface water quality, common stream pollutants, and how to identify them. Snapshot Assessment is available to all citizens without having to attend a workshop. Five signs have been posted along stream greenways that have a number for people to text a picture and report the condition of the stream. Staff investigate any problems reported through these programs. Table 4-3 shows the data relative to this program for the annual report period. 4.2.5 Second Saturday and VolunThursday Volunteer Events The "Second Saturday" events take place usually on the second Saturday of every month and run typically from 9 to 12 at different locations that are selected based on stream clean-up or maintenance needs. VolunThursday events take place one Thursday per month during lunchtime which allows people who are typically busy on weekends to volunteer. The events rotate between stream cleanups, rain garden maintenance, tree maintenance, and storm drain marking. Table 4-3 shows the data relative to this program for the annual report period. 4.2.6 Tree Planting Prog am The City and CMSWS maintain various tree planting programs where citizens can volunteer to plant and maintain trees on select public property and project sites. This effort helps to stabilize soil and reduce stormwater runoff and pollution. Table 4-3 shows the data relative to this program for the annual report period. 15 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 4.2.7 Adopt -A -Street Program The City's Keep Charlotte Beautiful program maintains an Adopt -A -Street program where residents can volunteer to adopt a section of roadway to remove trash and litter. This effort helps to keep trash from entering the storm drain system and streams. Table 4-3 shows the data relative to this program for the annual report period. Table 4-3: Public Involvement Program Results Activity Results Volunteer Monitoring participants 505 Volunteer Monitoring participant hours 2,011 Volunteer Monitoring samples collected 37 Volunteer Monitoring visual observations made 39 Illicit discharges detected through this program' 12 Second Saturday & VolunThursday total events 22 Second Saturday & VolunThursday volunteers 440 Second Saturday & VolunThursday volunteer hours 1,162 Second Saturday & VolunThursda Events — Stream Clean-ups 10 Second Saturday & VolunThursday trash collected tons 5.5 Second Saturday & VolunThursda Events — Tree Maintenance 7 Second Saturday & VolunThursda Events — Storm Drain Marking 3 Second Saturday & VolunThursday Events — Rain Garden Maintenance 2 Tree planting volunteers 102 Tree planting volunteer hours 306 Trees planted by volunteers 325 Ado t-A-Street volunteers 4,758 Ado t-A-Street volunteer hours 9,859 Ado t-A-Street miles cleaned 621 Ado t-A-Street bags of trash collected 3,738 Ado t-A-Street bags of rec clables collected 230 SWAC meetings 11 Attendees at SWAC meetings 96 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 4.3 Public Involvement Mechanism The City of Charlotte and Mecklenburg County maintain a citizen Storm Water Advisory Committee (SWAC) which serves as the City's stormwater management citizen advisory panel for involving the public in the development and implementation of the permit program. SWAC reviews: • Capital and operational programs; • Appeals; • Stormwater program policies; • Long-range plans; and • Budgets. 16 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. The committee also adjudicates appeals for erosion control violations, post -construction variances and appeals, pollution control violations, service charges, and fee credits and adjustments. Table 4-3 shows the data relative to this program for the annual report period. 4.4 Public Reporting Mechanisms The City, in cooperation with Mecklenburg County, operates a joint customer service hotline (311) to receive information about a variety of concerns. Citizens can call 311 to report pollution, flooding, and blockages as well as submit requests for service to 311 using the CLT+ app or by going online to the "Report a Problem" section of the website. Additional information is discussed in Section 3.6. 4.5 Public Review and Comment Opportunities The City provides opportunities for public review and comment on the implementation of its NPDES MS4 permit and SWMP plan through website information. Both documents are provided on the website along with a copy of the most recent annual report. One of the other main opportunities for public review and comment is through the SWAC which is discussed in Section 4.3. 4.6 Public Notice During the annual report period the City issued a public notice related to the Unified Development Ordinance adoption process. 4.7 Measurable Goals/Planned Activities for Future Program Years Table 4-4 describes the various Public Involvement and Participation Program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 17 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 4-4: BMP Measurable Goals for the Public Involvement and Participation Program. Im Measurable Goals BMP Description BMP (by permit term ear 1 2 1 3 4 5+ Volunteer The permittee shall include and promote volunteer opportunities designed Continue to maintain a public involvement and participation program that community to promote ongoing citizen participation. outlines campaigns and tools to encourage public involvement. (On -going, involvement years 1 — 5+) program Establish a The permittee shall provide and promote a mechanism for public Maintain the Stormwater Advisory Committee. (On -going, years 1 — 5+) Mechanism involvement that provides for input on stormwater issues and the for Public stormwater program. involvement Establish The permittee shall promote and maintain a hotline/helpline for the purpose Maintain a hotline that receives information from the public 24 hours a day. Hotline/Help line of public involvement and participation. On- oin , years 1 — 5+ Public Review and The permittee shall make copies of their most recent Stormwater Plans Maintain an informational website which includes the SWMP available for Comment available for public review and comment. review and comment. (On -going, years 1 — 5+ Public Notice Pursuant to 122.34 the permittee must, at a minimum, comply with State, Comply with State and local public notice requirements when making Tribal and local public notice requirements when implementing a public major changes to the stormwater program and/or applying for permit involvement/ participation program. renewals. (On -going, as needed IN IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 4.8 Program Assessment The BMPs shown in Table 4-1 for the Public Involvement and Participation Program were successfully implemented during the annual report period. Discussion in Section 4 provides more detailed information about implementation efforts. Table 4-5 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 4-5: Profram Data Summary PUBLIC INVOLVEMENT PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 Total Volunteers 3,859 3,533 5,185 8,494 Total Volunteer hours 16,019 12,277 10,747 19,414 Total miles cleaned by volunteers (linear miles of street & stream) 612 569 516 734 Total tons trash collected by volunteers (from streams & street) 72 51 52 85 SWAC meetings 9 8 11 11 Attendees at SWAC meetings 167 158 73 96 4.8.1 Assessment Summary The City's Public Involvement and Participation Program provides a combination of activities that allows residents to be involved in the City's stormwater management program and the opportunity to comment on components of the City's plan to meet NPDES MS4 permit requirements. The following provides an overview of the program's effectiveness: Storm Drain Marking Program: With evolving COVID-19 protocols related to gatherings and events, CMSWS continued to promote the program via social media. The program was promoted as an activity that allowed for social distancing. The program was successful during FY2022 with over 1,000 storm drains marked and over 300 volunteer hours. Adopt -A -Stream Program: The number of Adopt -A -Stream volunteers increased slightly. One-time stream clean-ups are becoming more popular with groups versus signing up to conduct two clean-ups per year, which is a requirement for adopting a stream segment. Big SpringClean: lean: The Big Spring Clean was held in the spring of FY2022 with over 300 volunteers spending more than 900 hours cleaning seven sites throughout the county. Volunteer Monitoring Program: The Volunteer Monitoring Program was modified due to COVID-19 protocols and virtual training was created. Volunteer Monitoring is now offered as an activity that can be completed during a stream cleanup in hopes of engaging more volunteers in the program. This is an example of continued program evaluation, creative thinking, and adaptation. When in -person 19 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. training of groups wasn't feasible or otherwise resource -intensive and not very popular, staff found new and easier ways to engage volunteers in monitoring streams. Public Involvement Strategy: The purpose of the Public Involvement program is to provide an opportunity for residents to get involved in activities aimed at protecting and improving surface water quality. The City's various volunteer programs are promoted via traditional media such as television and radio, digital media and streaming platforms and on social media platforms. Staff meets quarterly to communicate about volunteer participation and to determine changes that need to take place in order to continue to be successful. SWAC meetings: Depending on COVID conditions at the time, meetings held during FY2022 were conducted either as in -person, virtually, or in a hybrid format to facilitate maximum participation. These meetings continue to be a highly effective method for involving the public in policy decisions related to the overall stormwater program. Public Hotline/ Helpline: The 311-hotline continued to be a successful tool for allowing the public to report surface water and stormwater pollution problems. Section 5: Illicit Discharge Detection and Elimination (IDDE) Program During the annual report period, staff implemented the Illicit Discharge Detection and Elimination ("IDDE") program to identify and eliminate sources of pollution to the MS4 per the SWMP. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 5.1 BMP Summary Table Table 5-1 provides information concerning the BMPs implemented to fulfill the IDDE Program requirements. 20 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 5-1: BMP Summary Table for the Illicit Discharge Detection and Elimination Program. Implementation BMP BMP Description Status for Annual Report Period Maintain Maintain adequate ordinances or other legal authorities to prohibit appropriate legal illicit connections and discharges and enforce the approved IDDE Yes - Implemented authorities Program. Maintain a Storm The permittee shall maintain a current map showing major outfalls Sewer System Base and receiving streams. Yes - Implemented Ma Inspection / Maintain written procedures and/or Standard Operating Procedures detection program (SOPS) for detecting and tracing the sources of illicit discharges and to detect dry for removing the sources or reporting the sources to the State to be Yes - Implemented weather flows at properly permitted. Written procedures and/or SOPS shall specify a MS4 outfalls timeframe for monitoring and how many outfalls and the areas that are to be targeted for inspections. Employee Training Conduct training for appropriate municipal staff on detecting and Yes - Implemented reporting illicit connections and discharges. Maintain a public Maintain and publicize reporting mechanism for the public to report reporting illicit connections and discharges. Establish citizen request response Yes - Implemented mechanism procedures. Documentation The permittee shall document the date of investigations, any Yes - Implemented enforcement actions or remediation that occurred. 5.2 Ordinance Administration and Enforcement The City's Stormwater Pollution Control Ordinance (SWPCO) continues to be implemented as part of the NPDES MS4 permit program and SWMP. All procedures and guidelines for proper administration and enforcement of the ordinance are reviewed and updated, as necessary. Table 5-2 shows the data relative to the SWPCO program for the annual report period. Table 5-2: SWPCO Program Results ActivityResults Total NOVs issued l l 8 Total Civil penalties issued 13 5.3 Stormwater System Inventory and Storm System Base Map The City collects stormwater system inventory using a Stormwater Inventory Program and a Stream Walk Program. The data is used in GIS to create base maps as necessary. Table 5-3 shows the data relative to the stormwater system inventory program for the annual report period. 5.4 IDDE Manual and Procedures The City maintains an IDDE Manual to ensure proper implementation of the program. The manual is supported by several associated Standard Operating Procedures (SOPS) that provide detailed information to staff for conducting program activities. The IDDE Manual was updated during FY2022. 21 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 5-3: Stormwater Inventory Program Results Activity Stream -walk sub -basins six s . mi. assessed Results 22 Stream -walk stream miles assessed 191 New outfalls identified 132 Existing outfalls A/ C'd 380 System work zone areas ones . mi. evaluated 24 Square miles evaluated (system inventory watershed 21 Pipe miles inventoried 185 Open drainage miles inventoried 53 Stormwater features inventoried 33,405 Development projects added to system inventory) 108 5.5 Employee IDDE Training and Education Employee IDDE Training and Education involves training municipal employees about the detection of illicit connections and discharges, and the various methods for reporting suspected pollution problems. Training varies from year to year and is provided through a combination of the following methods: • Staff meeting presentations; • On -site, in -person training sessions; • On-line training module; and • Other methods such as newsletter articles, online contests, posters, flyers, light box displays, emails, websites, and displays and information at employee gatherings. During FY2022, staff IDDE training and education was provided through in -person training sessions, an online training module in combination with municipal pollution prevention training, and two articles in the City employee e-newsletter as well as several articles in the CSWS employee e-newsletter. Table 5-4 shows the data relative to this program for the annual report period. Table 5-4: Employee IDDE Training/Education Program Results Activity Results Total staff trained on IDDE 2,631 On -site training presentations and tailgate training sessions at municipal facilities 23 Employees trained at on -site sessions 403 Facilities assigned on-line training sessions 26 Staff trained via on-line training module 628 Staff trained via other methods 1,600 5.6 Public Reporting Mechanisms The City, in cooperation with Mecklenburg County, operates a joint customer service hotline (311) to receive information about a variety of concerns. Citizens can call 311 to report pollution, flooding, and blockages as well as submit requests for service to 311 using the CLT+ 22 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report app or by going online to the "Report a Problem" section of the website. Additional information is discussed in Section 3.6. 5.7 Illicit Discharge Detection and Elimination Program and Documentation 5.7.1 Outfall Inspection and Dry Weather Flow Detection Each year select sub -basin outfalls are inspected for physical condition, the presence of dry weather flows (DWFs), and illicit discharges. These inspections are primarily conducted during Stream Walks and Hot Spot Investigations, and facility inspections. Table 5-6 shows the data relative to the outfall inspection and DWF detection program for the annual report period. Table 5-6: Outfall Inspection and DWF Program Results Activity Results Total outfalls inspected 732 Outfalls inspected during stream walks 512 Outfalls inspected during service requests/field investigations 38 Outfalls inspected during municipal inspections 155 Outfalls inspected during industrial inspections 27 DWFs detected 35 DWFs sampled 7 Fecal Coliform samples collected 7 Total Phosphorus samples collected 4 Fecal Coliform results requiring follow-up investigation 0 Illicit discharges detected through this programi. 6 Municipal SSOs reported to CLT-W 2 Stream blockages detected/reported 37 Severe stream bank erosion areas detected/recorded 14 Other potential issues detected 31 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 5.7.2 Surface Water Quality Monitoring The two main monitoring programs used to support IDDE efforts are the Fixed Interval and CMANN stream monitoring programs. The Fixed Interval program conducts in -stream monitoring for various chemical and physical parameters on a monthly basis and is discussed further in Section 10. The CMANN program is an automated monitoring network that takes in - stream readings every 60 minutes at select monitoring sites for dissolved oxygen, temperature, pH, conductivity, and turbidity. 5.7.3 Illicit Discharge Elimination Program The Illicit Discharge Elimination Program ("IDEP") is a sub -set of the overall IDDE program. Staff conducts proactive illicit discharge detection, investigation and outreach activities in areas where data and staff experience indicate the greatest likelihood for the occurrence of illicit discharges and/or poor housekeeping practices. During FY2022, the following activities were conducted: 23 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. • Watershed Basin Inspections including commercial street corridors, commercial sites, and multi -family communities; and • Inspection of facilities that were previously issued a SWPCO civil penalty. Table 5-7 shows the data relative to this program for the annual report period. 5.7.3.1 Water Line Repair Impact Assessment Due to the potential for MS4 and surface water impacts downstream of municipal water line repair locations, this project seeks to assess impacts both qualitatively, through observation, and quantitatively, through sample collection and analysis. Table 5-7 shows the data relative to this program for the annual report period. Table 5-7: IDEP Program Results Activity Results Multi -family community inspections conducted 25 Watershed basin inspections conducted 21 Municipal Water Line Repair Assessments conducted 4 Inspections at previous SWPCO civil penalty facilities 24 Illicit discharges detected through this programi. 9 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 5.7.4 Sanitary Sewer Overflows and Septic System Discharges CMSWS works with two separate City/County departments to reduce sources of bacteria from municipal system SSOs and private septic systems: Charlotte Water (CLT-W) department and Mecklenburg County Groundwater and Wastewater Services. 5.7.4.1 Sanitary Sewer Overflows CLT-W is responsible for operating the municipal water supply and sanitary sewer systems in the City. CLT-W monitors the causes of SSOs and implements various system programs and maintenance activities to reduce SSO occurrences. Table 5-8 shows the data relative to these programs for the annual report period. Table 5-8: Municipal Sanitary Sewer System Program Results* Activity Results* Sewer System SSOs discovered/addressed 161 Sewers stem SSO volume(gallons) 1,435,836 SSOs per 100 system miles 3.6 Sewers stem lines inspected via CCTV miles 230 Sewers stem manholes inspected 1,932 Sewers stem lines replaced or repaired miles 18 Sewers stem lines re -lined miles 18 Sewers stem manholes replaced or repaired 698 Sewers stem lines cleaned miles 711 24 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report IL AetivitvA Sewers stem lines treated with root chemicals miles Results* 321 Sewers stem lines ROW cleared for access miles 115 Sewers stem service connections replaced 187 Sewers stem lift -station preventative maintenance tasks 139 * This data is not included in summary data shown in Table 5-15 5.7.4.2 Commercial/restaurant/industrial inspections CLT-W performs inspection and enforcement activities to address SSO sources from commercial and industrial business. Table 5-9 shows the data relative to this program for the annual report period. 5.7.4.3 Flow Free education program CLT-W implements education activities to address SSO sources from commercial and industrial business and residential sources. Table 5-9 shows the data relative to this program for the annual report period. Table 5-9: Sewer System Inspection and Education Program Results* Activity Results* Foodgrease/oil handling inspections conducted 3,926 Industrial pretreatment inspections conducted 140 City sewer use ordinance NOVs issued 28 City sewer use ordinance NODS issued 48 FOG mailers issued 1,041 FOG brochures distributed 3,721 FOG presentations conducted 2 Citizens educated at FOG presentations 930 * This data is not included in summary data shown in Table 5-15 and Table 3-11 5.7.4.4 Multi -Family Residential Program The IDDE multi -family program includes: • Maintaining a master list of multi -family communities; • Compiling a list of 50 priority communities for inspection annually; • Informational letters sent to priority list of multi -family residential communities; and • Education of multi -family community staff to help them comply with the regulations; Table 5-10 shows the data relative to this program for the annual report period. 25 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 5-10: Multi -family Multi -Family Community Program Results Activity informational letters issued by CMSWS Results 50 Multi -family inspections conducted by CMSWS 50 Operation & Maintenance Plans developed 21 Multi -family sewers stem problems discovered 0 Illicit discharges detected through this programi. 0 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 5.7.4.5 Septic Systems CMSWS works with Mecklenburg County Groundwater and Wastewater Services (GWWS) each year to monitor discharges from septic systems. The GWWS program conducts the permitting, inspections, education and enforcement activities related to septic systems. CMSWS reviews this information to look for potential impacts on surface waters. Table 5-11 shows the data relative to this program for the annual report period. Table 5-11: Septic System Program Results Activity Results Total failing septic sstems discovered 22 Failing septic sstems connected to municipal sanitary sewers stem 14 Failing septic sstems repaired 7 Illicit discharges detected through this program'- 0 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 5.7.5 Public Education and Outreach The City maintains a public education and outreach program to inform businesses, industries and the public about illicit discharges and improper waste disposal and how they impact the environment. This education and outreach program includes instructions regarding the proper method for reporting illicit discharges. 5.7.5.1 Commercial Sector Education and Outreach The City has created best practices guidance documents for many commercial sectors based on problems revealed through data including service requests, illicit discharges, violation notices, and staff observations. The documents are available online and staff provide them to businesses during service requests and inspections. During FY2022, because data analysis showed a significant number of illicit discharges associated with the concrete sector, staff created a new best practices guidance document for the concrete industry as it relates to stormwater pollution. This document along with a cover letter were mailed to many local and regional businesses in the concrete industry. Table 5-12 shows the data relative to this program for the annual report period. 26 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 5-12: Commercial Sector Education Program Results Activit Results Concrete Industry BMP guidance documents mailed 1 168 5.7.5.2 Service Requests and Documentation The 311-call center refers calls for stormwater general, structural, and flooding concerns to CSWS while surface water quality (SWQ) concerns are referred to CMSWS-LUESA. Responding to SWQ service requests continues to be one of the most important methods for detecting and eliminating illicit discharges and connections in the City. Table 5-13 shows the data relative to this program for the annual report period. Table 5-13: Service Request Program Results Activity Results Total stormwater service requests received 7,653 SWQ service requests(pollution related 440 SWQ emer ency responses 37 The City utilizes the Cityworkso database platform to maintain electronic files documenting all IDDE activities including service requests. These are tracked from the original call for service, through investigations and applicable enforcement actions, and until final remedial work is completed. 5.8 Measurable Goals/Planned Activities for Future Prouram Years Table 5-14 describes the various Illicit Discharge Detection and Elimination program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 27 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 5-14: BMP Measurable Goals for the Illicit Discharge Detection and Elimination Program. Measurable Goals BMP Description BMP (by permit term ear 1 2 1 3 4 5+ Maintain Maintain adequate ordinances or other legal authorities to prohibit illicit Continue administration and enforcement of the Pollution Control appropriate legal connections and discharges and enforce the approved IDDE Program. Ordinance and IDDE Program. (On -going, years 1 — 5+) authorities Maintain a Storm The permittee shall maintain a current map showing major outfalls and Continue to maintain storm sewer map in GIS and update as necessary to Sewer System Base receiving streams. show additional outfalls. (On -going, years 1 — 5+) Ma Inspection / Maintain written procedures and/or Standard Operating Procedures (SOPS) Maintain and update SOPS for detecting and eliminating illicit discharges detection program for detecting and tracing the sources of illicit discharges and for removing and performing outfall inspections. Roughly 20% of identified outfalls will to detect dry the sources or reporting the sources to the State to be properly permitted. be inspected each year, with extra emphasis on hotspot areas. (On -going, weather flows at Written procedures and/or SOPS shall specify a timeframe for monitoring years 1 — 5+) MS4 outfalls and how many outfalls and the areas that are to be targeted for inspections. Employee Training Conduct training for appropriate municipal staff on detecting and reporting Maintain an employee training program and conduct employee training. illicit connections and discharges. (On -going, years 1 — 5+ Maintain a public Maintain and publicize reporting mechanism for the public to report illicit Maintain the public reporting hotline and publicize through the media reporting connections and discharges. Establish citizen request response procedures. outreach campaign. mechanism (On -going, years 1 — 5+ Documentation The permittee shall document the date of investigations, any enforcement Continue to maintain IDDE program records and databases to accurately actions or remediation that occurred. document the activities in the program.(On-going,ears 1 — 5+ IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 5.9 Program Assessment The BMPs shown in Table 5-1 for the Illicit Discharge Detection and Elimination Program were successfully implemented during the annual report period. Discussion in Section 5 provides more detailed information about implementation efforts. Table 5-15 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 5-15: Program Data Summary IDDE PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 SWPCO NOVs issued 125 124 100 118 SWPCO civil penalties issued 11 13 7 13 Stream miles assessed 218 196 214 191 Outfalls inspected 1,237 802 474 732 Illicit discharges detected/corrected 2822. 2621• 2451• 259 SWQ Service requests/reported problems 553 605 445 440 Municipal employee IDDE onsite training sessions and facilities assigned online module 86 54 81 49 Employees trained on IDDE ,993jft 1,692 ,870 2,631 2. Previous year's reported numbers were adjusted to match new calculation methods used for FY2022 data. 5.9.1 Assessment Summary • Staff continued administration and enforcement of the Stormwater Pollution Control Ordinance and IDDE program. Staff issued 118 NOVs and 13 civil penalties and responded to 440 reports of potential stormwater pollution/illicit discharges; • Staff continued to maintain and update the GIS map of stormwater system outfalls. During FY2022, 132 new outfalls were identified and added to the GIS map; • The IDDE Manual and other IDDE-related SOPS were reviewed and updated during FY2022. Following the five-year plan for outfall inspections during stream walks, outfalls along 191 miles of streams were inspected which represents roughly 20% of stream miles draining greater than 50 acres; • Staff continued its robust employee training program on illicit discharge detection and reporting. Due to COVID-19, instead of being able to conduct some training through onsite presentations by CMSWS staff, training information was provided to knowledgeable supervisors at several facilities who used the information to conduct "tailgate -style" small group training sessions. Other employees were trained using an online training module developed by CMSWS staff. A total of 2,631 employees were trained and educated about IDDE issues; • The public reporting hotline 311 continued to be maintained as well as an online reporting form and the City's CLT+ phone app. All of these public reporting mechanisms were publicized through the program's media outreach campaign, website, and other ways; and • Staff continued to input all IDDE-related information into the Cityworks application. This includes all service requests (dates, names, follow-up, etc.), notices of violation, 29 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. penalties, inspections, and other program data. Various other documentation methods are used to record and track program information such as spreadsheets, tables, and Word documents which are stored electronically in appropriately labeled folders. Section 6: Construction Site Stormwater Runoff Control Program During the annual report period, the Construction Site Stormwater Runoff Control program conducted site evaluations and enforced the local ordinance per the SWMP. The following sub- sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 6.1 BMP Summary Table Table 6-1 provides information concerning the BMPs implemented to fulfill the requirements of the Construction Site Stormwater Runoff Control Program. Funding for the BMPs in this section is covered by local land development fees. Table 6-1: BMP Summary Table for the Construction Site Stormwater Runoff Control Program. Implementation BMP BMP Description Status for Annual Report Period Erosion and The permittee has a delegated Sediment and Erosion Control Sediment Control Program. As such, to the extent authorized by law, the permittee is Program responsible for compliance with the Sediment Pollution Control Act of 1973 and Chapter 4 of Title 15A of the North Carolina Administrative Code. The delegated Sediment and Erosion Control Program effectively meets the maximum extent practicable (MEP) Yes - Implemented standard for Construction Site Runoff Controls by permitting and controlling development activities disturbing one or more acres of land surface and those activities less than one acre that are part of a larger common plan of development as authorized under the Sediment Pollution Control Act of 1973 and Chapter 4 of Title 15A of the North Carolina Administrative Code. Develop The NCGO10000 permit establishes requirements for construction requirements for site operators to control waste such as discarded building materials, construction site concrete truck washout, chemicals, litter, and sanitary waste at the Yes - Implemented operators construction site that may cause adverse impacts to water quality, as art of the Permittee's delegated program. Public information The permittee shall provide and promote a means for the public to and reporting notify the appropriate authorities of observed erosion and sedimentation problems. The permittee may implement a plan Yes - Implemented promoting the existence of the NCDEQ, Division of Land Resources "Stop Mud" hotline to meet the requirements of this paragraph. 30 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARI. VIT. BMP Description Implementation Status for Annual Report Period Plan reviews Implement construction site plan reviews as part of the Permittee's delegated program. For new development and redevelopment projects to be built within the permittee's planning jurisdiction by entities with eminent domain authority, the permittee shall, to the Yes - Implemented maximum extent practicable, coordinate the approval of the construction site runoff control with the Division of Land Resources of NCDE . 6.2 Erosion and Sediment Control Program The City operates a delegated Sediment and Erosion Control program under authority granted by the North Carolina Sedimentation Commission. The "City of Charlotte — Soil Erosion and Sedimentation Control Ordinance (SESCO)," amended and adopted by City Council in 2008, serves as the backbone of the program. 6.2.1 Inspection Procedures All construction sites that require a preconstruction meeting and an approved plan are logged, filed and placed in the queue for regular inspections. Staff goals are to visit and inspect every logged site utilizing a scheduled inspection process. Sites that generated citizen complaints, had a history of non-compliance, or are in close proximity to a critical area are considered a priority for additional inspections and follow-up. Table 6-4 shows the data relative to this program for the annual report period. 6.3 Construction Site Requirements The program requires that all land disturbing activities comply with ordinance requirements for controlling erosion and sediment on site. As an additional requirement, and in compliance with NPDES regulations, all construction sites one acre or greater must have an approved soil erosion and sediment control plan designed specifically for the site as required by NPDES General Permit NCGO10000 for Construction Related Activities. 6.4 Public Information and Reporting The City's Erosion Control Program maintains a website to assist with the dissemination of information to the development community and the public. In addition, the City, in cooperation with Mecklenburg County, operates a joint customer service hotline (311) to receive information about a variety of concerns. Citizens can call 311 to report pollution, flooding, and blockages as well as submit requests for service to 311 using the CLT+ app or by going online to the "Report a Problem" section of the website. Table 6-4 shows the data relative to this program for the annual report period. 31 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 6.4.1 Education and Training Materials The City maintains an education and training program for developers, contractors and other interested parties within the region. In a cooperative effort with Mecklenburg County, the City maintains the Charlotte -Mecklenburg Certified Site Inspector ("CMCSI") training program, which has provided training to many individuals since its inception in 2003. The training during FY2022 was provided through online videos and testing rather than in person, which came about due to COVID precautions. Table 6-2 shows the data relative to this program for the annual report period. In addition, developers, builders and responsible parties receive handouts and materials at preconstruction meetings and at other times as necessary to explain ordinance requirements, minimum standards and other relevant information for the financially responsible party and/or site operators. Table 6-2: CMCSI Training Program Results Activity Results Training sessions conducted 0* Total persons trained 339 Persons attending training sessions 0* Persons trained on-line 339 * All training was conducted virtually during FY2022 6.5 Plan Reviews All land disturbing activities one acre or greater are required to obtain approval of the soil erosion and sediment control plan prior to scheduling a preconstruction conference. Erosion control plans submitted by the applicants are reviewed and approved by CSWS-LD erosion control staff. 6.6 Measurable Goals/Planned Activities for Future Program Years Table 6-3 describes the various Construction Site Stormwater Runoff Control BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 32 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 6-3: BMP Measurable Goals for the Construction Site Stormwater Runoff Control Program. Measurable Goals BMP Description BMP (by permit term ear 1 2 3 4 5+ im Erosion and The permittee has a delegated Sediment and Erosion Control Program. As Continue to implement the delegated Sediment and Erosion Control Sediment Control such, to the extent authorized by law, the permittee is responsible for program and enforce the City ordinance. (On -going, years 1 — 5+) Program compliance with the Sediment Pollution Control Act of 1973 and Chapter 4 of Title 15A of the North Carolina Administrative Code. The delegated Sediment and Erosion Control Program effectively meets the maximum extent practicable (MEP) standard for Construction Site Runoff Controls by permitting and controlling development activities disturbing one or more acres of land surface and those activities less than one acre that are part of a larger common plan of development as authorized under the Sediment Pollution Control Act of 1973 and Chapter 4 of Title 15A of the North Carolina Administrative Code. Develop The NCGO10000 permit establishes requirements for construction site Continue requirements for BMPs and waste control through issuance of requirements for operators to control waste such as discarded building materials, concrete General Construction Permit NCGO 10000. (On -going, years 1 — 5+) construction site truck washout, chemicals, litter, and sanitary waste at the construction site operators that may cause adverse impacts to water quality, as part of the Permittee's delegated program. Public information The permittee shall provide and promote a means for the public to notify Continue to maintain reporting hotline and website. (On -going, years 1 — and reporting the appropriate authorities of observed erosion and sedimentation problems. 5+) The permittee may implement a plan promoting the existence of the NCDENR, now NCDEQ, Division of Land Resources "Stop Mud" hotline to meet the requirements of this paragraph. Plan reviews Implement construction site plan reviews as part of the Permittee's Continue plan reviews to ensure program requirements are met. Coordinate delegated program. For new development and redevelopment projects to be with NCDEQ-Division of Energy, Mining, and Land Resources as built within the permittee's planning jurisdiction by entities with eminent necessary. (On -going, years 1 — 5+) domain authority, the permittee shall, to the maximum extent practicable, coordinate the approval of the construction site runoff control with the Division of Land Resources of DENR. 33 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 6.7 Program Assessment The BMPs shown in Table 6-1 for the Construction Site Stormwater Runoff Control Program were successfully implemented during the annual report period. Discussion in Section 6 provides more detailed information about implementation efforts. Table 6-4 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 6-4: Program Data Summary CONSTRUCTION SITE RUNOFF PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 SESCO NOVs issued 51 41 35 55 SESCO civil penalties issued 60 31 20 27 Site inspections conducted 3,513 4,902 5,044 5,100 Service requests/reported problems 500 550 510 505 CMCSI training sessions (in -person) 3 2 of of Persons trained on CMCSI 349 339 257 339 Project/site plans reviewed 1,254 1,030 1,293 1,617 3. In -person training not conducted due to Covid-19 pandemic. Section 7: Post -Construction Stormwater Management Program During the annual report period, the City conducted implementation of its Post -Construction Stormwater Management program in accordance with the Post -Construction Stormwater Ordinance ("PCSO") and program administrative manual. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 7.1 BMP Summary Table Table 7-1 provides information concerning the BMPs implemented to fulfill the requirements of the Post -Construction Stormwater Management Program. Funding for the BMPs in this section is covered by local stormwater utility fees and land development fees. [THIS SPACE INTENTIONALLY BLANK] 34 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 7-1: BMP Summary Table for the Post -Construction Stormwater Management Program. Implementation BMP BMP Description TRepo Status for Annual t Period Post -Construction Maintain an ordinance (or similar regulatory mechanism) and Stormwater program to address stormwater runoff from new development and Yes - Implemented Management redevelopment. Program Strategies which Maintain strategies that include a combination of structural and/or include BMPs non-structural BMPs implemented in concurrence with ordinance appropriate for the above. Provide a mechanism to require long-term operation and Yes - Implemented MS4 maintenance of structural BMPs. Require annual inspection reports of permitted structural BMPs performed by a qualified professional. Deed Restrictions The permittee shall provide mechanisms such as recorded deed and Protective restrictions and protective covenants so that development activities Yes - Implemented Covenants maintain the project consistent with approved plans. Operation and The developer shall provide the permittee with an operation and Maintenance Plan maintenance plan for the stormwater system, indicating the operation and maintenance actions that shall be taken, specific quantitative criteria used for determining when those actions shall be taken, and who is responsible for those actions. The plan must clearly indicate the steps that shall be taken and who shall be responsible for restoring a stormwater system to design specifications if a failure Yes - Implemented occurs and must include an acknowledgment by the responsible party. Development must be maintained consistent with the requirements in the approved plans and any modifications to those plans must be approved by the Permittee. Educational Provide educational materials and training for developers. New materials and materials may be developed by the permittee, or the permittee may training for use materials adopted from other programs and adapted to the Yes - Implemented developers permittee's new development and redevelopment program. 7.2 Post -Construction Stormwater Management Program The City's post -construction program is designed to meet the stormwater management and surface water quality protection requirements of North Carolina Administrative Code at 15A 02H Sections .0126, .0150 - .0154 (NPDES) and at 15A 02H Section .1000 (Stormwater Management) to address post -construction stormwater runoff from new development and applicable redevelopment projects as required by the NPDES MS4 permit program and as allowable under current State law. The City PCSO covers the entire jurisdictional area (incorporated and ETJ areas) of the City and includes provisions for enforcement remedies and civil penalties to ensure compliance. An administrative manual is maintained to ensure successful implementation of the program and ordinance. Table 7-3 shows the data relative to this program for the annual report period. 35 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 7.3 Post -Construction BMP Strategies BMP strategies for the City's Post -Construction Stormwater Management program consist mainly of structural stormwater control measure(s) ("SCMs") such as sand filters, wet ponds, wetlands, and bioretention areas. SCMs and design procedures are detailed in a local manual developed by the City and County. SCMs are required on projects that have 24% or greater built upon area (BUA) and disturbing more than an acre and/or adding more than 20,000 sf of BUA as defined by the program. This threshold is reduced to 10-12% built upon area for developments in sensitive watersheds as defined by the ordinance. Table 7-3 shows the data relative to this program for the annual report period. The Charlotte Unified Development Ordinance (UDO) was developed over several years, was adopted in September 2022, and is scheduled to become effective June 1, 2023. All land development and zoning related ordinances, including post -construction, were consolidated into the UDO and various changes were incorporated as part of the process. One of the changes is that the BUA threshold as mentioned above was reduced from 20,000 square feet to 5,000 square feet. 7.4 Deed Restrictions and Protective Covenants As part of the PCSO program, the City requires deed restrictions and protective covenants to ensure that development projects remain consistent with approved plans. Stream and buffer boundaries are required to be specified on all surveys and record plats. An operation and maintenance agreement for SCMs is required to be referenced on record plats and recorded in deeds. 7.4.1 Setbacks for Built -Upon Areas The PCSO program requires a minimum of 30-foot buffers on all perennial and intermittent streams draining less than 50 acres, and incrementally increased required buffer widths up to 100-feet for streams draining 640 acres or more. A special provision in the program requires 200-foot buffers on all perennial streams and 100-foot buffers on all intermittent streams in the Six Mile Creek watershed due to the potential presence of the federally endangered species, Carolina Heelsplitter (Lasmigona decorata). These buffers are recorded on record plats as noted in sub -section 7.4. 7.5 Operation and Maintenance Plan The PCSO program requires an operation and maintenance agreement executed by the responsible party (owner) of each stormwater control measure (SCM). As part of the program, the owner is required to: • Conduct annual inspections of SCMs; • Maintain proper records documenting operation and maintenance activities; and • Submit inspection reports to the City. 36 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CSWS conducts annual inspections of SCMs to ensure proper operation and maintenance and compliance with the PCSO. Table 7-3 shows the data relative to this program for the annual report period. 7.6 Education and Training Program The City implements an education and training program designed to provide developers, designers, and site owners with the information necessary to comply with the City's Post - Construction Stormwater Ordinance. Table 7-3 shows the data relative to this program for the annual report period. 7.7 Measurable Goals/Planned Activities for Future Program Years Table 7-2 describes the various Post -Construction Stormwater Management Program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 37 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 7-2: BMP Measurable Goals for the Post -Construction Stormwater Management Program. Measurable Goals BMP Description BMP (by permit term ear 1 2 1 3 4 5+ Post -Construction Maintain an ordinance (or similar regulatory mechanism) and program to Maintain the City's Post- Construction Ordinance (PCSO) and implement Stormwater address stormwater runoff from new development and redevelopment. and enforce the ordinance. (On -going, years 1 — 5+) Management Program Strategies which Maintain strategies that include a combination of structural and/or non- Continue PCSO program and ensuring proper BMP operation, include BMPs structural BMPs implemented in concurrence with (a) above. Provide a maintenance, and annual inspections. (On -going, years 1 — 5+) appropriate for the mechanism to require long-term operation and maintenance of structural MS4 BMPs. Require annual inspection reports of permitted structural BMPs performed by a qualified professional. A qualified professional means an individual trained and/or certified in the design, operation, inspection and maintenance aspects of the BMPs being inspected, for example, someone trained and certified by NC State for BMP Inspection & Maintenance. Deed Restrictions The permittee shall provide mechanisms such as recorded deed restrictions Continue to implement Deed Restrictions and Protective Covenants and Protective and protective covenants so that development activities maintain the project through administration of the PCSO Program. (On -going, years 1 — 5+) Covenants consistent with approved plans. Operation and The developer shall provide the permittee with an operation and Continue to implement BMP operation, maintenance, and inspection plan Maintenance Plan maintenance plan for the stormwater system, indicating the operation and and procedures. (On -going, years 1 — 5+) maintenance actions that shall be taken, specific quantitative criteria used for determining when those actions shall be taken, and who is responsible for those actions. The plan must clearly indicate the steps that shall be taken and who shall be responsible for restoring a stormwater system to design specifications if a failure occurs and must include an acknowledgment by the responsible party. Development must be maintained consistent with the requirements in the approved plans and any modifications to those plans must be approved by the Permittee. Educational Provide educational materials and training for developers. New materials Continue to provide and update education/ training tools for developers. materials and may be developed by the permittee, or the permittee may use materials (On -going, years 1 — 5+) training for adopted from other programs and adapted to the permittee's new developers development and redevelopment program. G: IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 7.8 Program Assessment The BMPs shown in Table 7-1 for the Post -Construction Stormwater Management Program were successfully implemented during the annual report period. Discussion in Section 7 provides more detailed information about implementation efforts. Table 7-3 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 7-3: Program Data Summary POST -CONSTRUCTION PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 PCSO NOVs/CARs issued 4. 948 933 711 834 PCSO civil penalties issued 0 4 7 8 Site plans reviewed 126 157 162 255 SCMs added by development 112 90 144 137 SCM inspections conducted'- 1,600 1,600 1,440 1,630 PCSO training sessions 1 1 1 1 Persons trained on PCS06 128 1 74 124 195 4. Includes NOVs and Corrective Action Requests (CARs); and notice of maintenance and report due letters to remind the property owner that a yearly inspection report is due. 5. Includes Post -Construction and Peak Detention SCMs inspected. 6. Number includes only attendees at workshops. Others were educated about aspects of the Post -Construction program through phone calls, website, and other methods. 7.8.1 Assessment Summary Additional measures have been taken during the as -built process to ensure that SCMs are fully in compliance at the time that construction occupancy holds are released. One additional staff member was added during FY2022 to assist with data entry for newly constructed SCMs. This has allowed staff to successfully schedule and coordinate annual inspections prior to the report due dates. Section 8: Pollution Prevention/Good Housekeeping Program During the annual report period, inspection, training, and program development activities were conducted for municipal facilities and operations as part of the Pollution Prevention and Good Housekeeping Program per the SWMP. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 39 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 8.1 BMP Summary Table Table 8-1 provides information concerning the BMPs implemented to fulfill the requirements of the Pollution Prevention & Good Housekeeping Program. Table 8-1: BMP Summary Table for the Pollution Prevention/Good Housekeeping Program. Implementation BMP BMP Description Status for Annual Report Period Operation and Maintain and implement an operation and maintenance program for maintenance municipal facilities owned and operated by the permittee that have program for been determined by the permittee to have significant potential for Yes - Implemented municipal facilities generating polluted stormwater runoff that has the ultimate goal of and operations. preventing or reducing pollutant runoff. Site Pollution Maintain and implement Site Pollution Prevention Plans for Prevention Plans municipal facilities owned and operated by the permittee that have for municipal been determined by the permittee to have significant potential for Yes - Implemented facilities and generating polluted stormwater runoff that has the ultimate goal of operations. preventing or reducing pollutant runoff. Inspection and Maintain an inventory of municipal facilities and operations owned evaluation of and operated by the permittee that have been determined by the municipal facilities permittee to have significant potential for generating polluted and operations. stormwater runoff, including the MS4 system and associated structural SCMs, conduct inspections at facilities and operations Yes - Implemented owned and operated by the permittee for potential sources of polluted runoff, the stormwater controls, and conveyance systems, and evaluate the sources, document deficiencies, plan corrective actions, implement appropriate controls, and document the accomplishment of corrective actions. Spill Response Maintain spill response procedures for municipal facilities and Procedures operations owned and operated by the permittee that have been Yes - Implemented municipal facilities determined by the permittee to have significant potential for and operations. generating polluted stormwater runoff. Prevent or Describe measures that prevent or minimize contamination of the Minimize stormwater runoff from all areas used for vehicle and equipment Contamination of cleaning, including fire stations that serve more than three fire trucks Stormwater Runoff and ambulances. Perform all cleaning operations indoors, cover the from all areas used cleaning operations, ensure wash water drains to the sanitary sewer for Vehicle and system, collect stormwater runoff from the cleaning area and Equipment providing treatment or recycling, or other equivalent measures. If Cleaning sanitary sewer is not available to the facility and cleaning operations take place outdoors, the cleaning operations shall take place on grassed or graveled areas to prevent point source discharges of the Yes - Implemented wash water into the storm drains or surface waters. Where cleaning operations cannot be performed as described above and when operations are performed in the vicinity of a storm drainage collection system, the drain is to be covered with a portable drain cover during cleaning activities. Any excess standing water shall be removed and properly handled prior to removing the drain cover. Facilities that serve three or fewer fire trucks and ambulances and that cannot comply with these requirements shall incorporate structural measures during facility renovation. M IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Implementation BMP Description Status for Annual dd Report Period Streets, roads, and The permittee shall evaluate BMPs to reduce polluted stormwater public parking lots runoff from municipally -owned streets, roads, and public parking maintenance lots within the corporate limits. Within 12 months of permit Yes - Implemented issuance, the permittee must update its Stormwater Plan to include the BMPs selected. Streets, roads, and Within 24 months of permit issuance, the permittee must implement public parking lots BMPs selected to reduce polluted stormwater runoff from Yes - Implemented maintenance municipally -owned streets, roads, and public parking lots identified by the permittee in the Stormwater Plan. Operation and Within 12 months of permit issuance, the permittee shall develop Maintenance and implement an operation and maintenance program for structural (O&M) for SCMs and the storm sewer system (including catch basins, the municipally -owned conveyance system, and structural stormwater controls). or maintained structural SCMs and the storm sewer system Yes - Implemented (including catch basins, the conveyance system, and structural stormwater controls). Staff training Maintain and implement a training plan that indicates when, how often, who is required to be trained and what they are to be trained Yes - Implemented on. 8.2 Operation and Maintenance Program Operation and maintenance of municipal facilities with regards to stormwater is primarily managed through implementation of Stormwater Pollution Prevention Plan(s) ("SWPPPs") and the municipal facility inspection program. 8.3 Municipal Facility Stormwater Pollution Prevention Plans SWPPPs are developed for all applicable municipal facilities listed in the SWMP. The SWPPPs are reviewed and updated annually with all documentation kept in the SWPPPs, including site maps. 8.4 Municipal Facility Inventory and Site Inspections All parcels of land owned or operated by the City continue to be examined to determine whether they should be included in the Municipal Facilities Inventory within the Pollution Prevention/Good Housekeeping Program. A standard administrative procedure ("SAP") is 41 • Cd-IARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report followed when evaluating parcels for this inventory. Once included in the inventory, applicable facilities receive: • Preparation and implementation of a SWPPP; • Regular inspections; and • Annual employee training. Table 8-2 shows the data relative to this program for the annual report period. Table 8-2: Municipal Facility Program Results Activity Results New City owned parcels reviewed for inventory 19 Municipal facility inspections conducted' 54 SWPPP reviews conducted 31 Spill Prevention & Response Plan reviews conducted 31 SWPPP deficiencies noted 5 O & M improvement recommendations made to municipal facilities 82 Municipal field operation program efforts conducted 2 Illicit discharges detected through the municipal facility inspection ro ramz. I This number includes 20 fire stations which are inspected once every 5 years. Fire stations do not have individual SWPPPs. 2. This data also included in the total Illicit Discharges data shown in Table 5-15. 8.4.1 NPDES Stormwater Permitted Municipal Facilities Review Thirteen of the municipal facilities discussed in the SWMP have their own general NPDES stormwater permits (*Note: The airport's permit is an individual permit). Annual inspections are conducted by CMSWS staff along with facility management at each facility. Additional inspections during each year are conducted by facility staff as required by their facility's permit. Emphasis is placed on elimination of illicit discharges, good housekeeping improvements, and compliance with permit and SWPPP requirements, including inspections, monitoring and training. The SWPPPs are reviewed annually and updated as necessary. 8.5 Municipal Spill Response Procedures Spill prevention and response procedures (SPRPs) are maintained for all facilities (and associated field operations) listed in the SWMP. These procedures are incorporated into the facility SWPPPs. The procedures and proper implementation of them is evaluated as part of the annual inspections. 8.6 Vehicle and Equipment Cleaning Operations Municipal employees wash the majority of vehicles and equipment at commercial or municipal vehicle wash facilities that drain to the sanitary sewer system. Vehicle and equipment washing at municipal facilities continue to be assessed during annual inspections at facilities listed in the SWMP, where applicable. 42 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 8.7 Streets, Roads, and Public Parking Lots Maintenance Streets and parking lots can be a significant source of stormwater pollution and the City implements various BMPs to best address polluted stormwater runoff from these sources, as shown below: • Street sweeping program; • Adopt -A -Street program; • Leaf and yard waste collection program; • Trash receptacles along downtown streets; • Trash receptacles and litter control activities at Park and Ride parking lots; and • Public education to address polluted stormwater runoff from municipally -owned streets and public parking lots. Table 8-3 shows the data relative to this program for the annual report period. Table 8-3: Streets/Roads and Parking Maintenance Program Results Activity Results* Streets/roads swept (miles)* 30,949 Streets/roads sweeping debris removed (tons)* 1,005 Yard waste collected (tons)* 39,255 Ado t-A-Street miles cleaned** 621 Ado t-A-Street bags of trash collected** 3,738 Ado t-A-Street bags of rec clables collected** 230 * This data not included in summary data shown in Table 4-5 ** This data also shown in Table 4-3. In addition, to address spills that may occur on municipal streets and in other areas as related to the overall IDDE program, CMSWS maintains a 24-hour emergency response team that responds to environmental emergencies. Members of the team act in an advisory role to the Charlotte Fire Department ("CFD") Hazmat Unit. 8.8 Municipal SCMs and MS4 System Operation and Maintenance The City maintains an inventory of municipal structural SCMs which are inspected for proper operation and maintenance at various frequencies based on the type of SCM. The inventory continues to be updated as new SCMs are constructed. Routine maintenance activities for these SCMs include: • Mowing; • Trash removal; • Woody growth removal; • Cattail removal; and • Inlet and outlet clearing. 43 • Cd-IARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report The City also conducts extensive cleaning and maintenance of the MS4 system which includes, but is not limited to: • Catch basin cleaning (manually and with vacuum trucks); • Storm drain top cleaning; • Curb and gutter cleaning; • Culvert/channel cleaning; • Drainage structure installation and repair; • Ditch reshaping; and • Erosion control. Table 8-4 shows the data relative to this program for the annual report period. Table 8-4: Stormwater System Maintenance Program Results EL Activity Catch basins top cleaned surface grates, inlets, etc. Result 30,906 Catch basins cleaned entire catch basin vacuumed out 587 Stormwater pipelines cleaned (pipe vacuumed out feet 8,285 Municipal SCMs in inventory 243 Municipal SCM inspections conducted 113 Municipal SCM maintenance activities conducted 36 8.9 Employee Staff Training at Municipal Facilities Training is conducted for employees at all of the facilities listed in the SWMP. The goal of training is to inform employees of the actions necessary to reduce the discharge of pollutants from their facilities/operations and protect surface water quality. Table 8-5 shows the data relative to this program for the annual report period. Table 8-5: Municipal Facility Employee Training Program Results Activity Results Training sessions conducted inperson) 50 Employees trained at sessions inperson) 428 Employees trained via on-line training module 825 Total employees trained 1,253 8.10 Measurable Goals/Planned Activities for Future Program Years Table 8-6 describes the various Pollution Prevention/Good Housekeeping Program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 8-6: BMP Measurable Goals for the Pollution Prevention/Good Housekeeping Program. Measurable Goals BMP Description I BMP (by permit term ear) 1 2 1 3 4 5+ Operation and Maintain and implement an operation and maintenance program for Review and update Operation and Maintenance programs as necessary. maintenance municipal facilities owned and operated by the permittee that have been Continue operation and maintenance activities per established procedures. program for determined by the permittee to have significant potential for generating (On -going, years 1 — 5+) municipal facilities polluted stormwater runoff that has the ultimate goal of preventing or and operations. reducing ollutant runoff. Site Pollution Maintain and implement Site Pollution Prevention Plans for municipal Review and update facility SWPPPs as necessary. Continue Prevention Plans facilities owned and operated by the permittee that have been determined implementation of SWPPPs. (On -going, years 1 — 5+) for municipal by the permittee to have significant potential for generating polluted facilities and stormwater runoff that has the ultimate goal of preventing or reducing operations. pollutant runoff. Inspection and Maintain an inventory of municipal facilities and operations owned and Review and update inventory of facilities for inspection. Conduct evaluation of operated by the permittee that have been determined by the permittee to inspections of applicable facilities and make corrective actions where municipal facilities have significant potential for generating polluted stormwater runoff, necessary. (On -going, years 1 — 5+) and operations. including the MS4 system and associated structural SCMs, conduct inspections at facilities and operations owned and operated by the permittee for potential sources of polluted runoff, the stormwater controls, and conveyance systems, and evaluate the sources, document deficiencies, plan corrective actions, implement appropriate controls, and document the accom lishment of corrective actions. Spill Response Maintain spill response procedures for municipal facilities and operations Review facility spill response procedures and update as necessary. Procedures owned and operated by the permittee that have been determined by the Continue implementation of procedures. (On -going, years 1 — 5+) municipal facilities permittee to have significant potential for generating polluted stormwater and operations. runoff. Prevent or Describe measures that prevent or minimize contamination of the Review procedures for vehicle and equipment cleaning operations and Minimize stormwater runoff from all areas used for vehicle and equipment cleaning, update as necessary. Ensure that corrective actions are implemented where Contamination of including fire stations that serve more than three fire trucks and operations are found to not be in compliance with the permit. (On -going, Stormwater Runoff ambulances. Perform all cleaning operations indoors, cover the cleaning years 1 — 5+) from all areas used operations, ensure wash water drains to the sanitary sewer system, collect for Vehicle and stormwater runoff from the cleaning area and providing treatment or Equipment recycling, or other equivalent measures. If sanitary sewer is not available Cleaning to the facility and cleaning operations take place outdoors, the cleaning operations shall take place on grassed or graveled areas to prevent point source discharges of the wash water into the storm drains or surface waters. 45 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Where cleaning operations cannot be performed as described above and when operations are performed in the vicinity of a storm drainage collection system, the drain is to be covered with a portable drain cover during cleaning activities. Any excess standing water shall be removed and properly handled prior to removing the drain cover. Facilities that serve three or fewer fire trucks and ambulances and that cannot comply with these requirements shall incorporate structural measures during facility renovation. Streets, roads, and The permittee shall evaluate BMPs to reduce polluted stormwater runoff Evaluate various types of BMPs that None (years 2 — 5+) public parking lots from municipally -owned streets, roads, and public parking lots within the would best address polluted maintenance corporate limits. Within 12 months of permit issuance, the permittee must stormwater runoff from municipally - update its Stormwater Plan to include the BMPs selected. owned streets and parking lots and select BMPs based on the evaluation b Feb 28, 2014. Streets, roads, and Within 24 months of permit issuance, the permittee must implement BMPs None Implement Continue to public parking lots selected to reduce polluted stormwater runoff from municipally -owned BMPs selected implement maintenance streets, roads, and public parking lots identified by the permittee in the from year one selected BMPs. Stormwater Plan. evaluation by (On -going, Feb 28, 2015. years 3 — 5+ Operation and Within 12 months of permit issuance, the permittee shall develop and Continue to implement structural SCM operation, maintenance, and Maintenance implement an operation and maintenance program for structural SCMs and inspection program. Continue operation and maintenance program for the (O&M) for the storm sewer system (including catch basins, the conveyance system, MS4 system. (On -going, years 1 — 5+) municipally -owned and structural stormwater controls). or maintained structural SCMs and the storm sewer system (including catch basins, the conveyance system, and structural stormwater controls). Staff training Maintain and implement a training plan that indicates when, how often, For facilities included in the municipal facility inspection program, conduct who is required to be trained and what they are to be trained on. staff training on SWPPPs and Spill Response Procedures according to the Training Plan. (On -going, years 1 — 5+ 46 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 8.11 Program Assessment The BMPs shown in Table 8-1 for the Prevention and Good Housekeeping Program were successfully implemented during the annual report period. Discussion in Section 8 provides more detailed information about implementation efforts. Table 8-7 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 8-7: Program Data Summary MUNICIPAL GOOD HOUSEKEEPING PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 New City -owned parcels reviewed for inventory 35 42 12 19 Municipal facilities inspected 32 33 537 548. Municipal operation program evaluations 17 14 1 2 O & M improvement recommendations made 72 78 91 82 Municipal facility employee training sessions 86 18 43 50 Municipal facility employees trained 1,993 1,008 1,156 1,253 7. FY2021 inspections included 20 municipal fire stations which are only inspected once per permit term 8. FY2022 inspections included 22 municipal fire stations which are only inspected once per permit term 8.11.1 Assessment Summary • Operation and maintenance activities for municipal facilities continued to be implemented during FY2022. Such activities are included in facility SWPPPs, and 31 facility SWPPPs were reviewed and updated as part of annual facility inspections and reviews; • New properties purchased by the City in the previous year were evaluated for activities and potential inclusion in the Municipal Good Housekeeping program. Nineteen properties were evaluated. A new vehicle and equipment maintenance facility being constructed was added to the program. Inspections were conducted at 54 facilities during FY2022 which included the 32 facilities conducted every year plus 22 fire stations which are inspected once every 5 years. Inspection reports were issued to facility Managers which pointed out any deficiencies and recommendations. For any issues requiring follow-up, a corrective action documentation sheet was included in the report and facility Managers were directed to conduct remedial activities, fill in the sheet with actions taken and dates completed, and return them to CMSWS staff. A total of 82 deficiencies and recommendations were identified during the inspections; • Facility spill response procedures are included in facility SWPPPs. The procedures were reviewed and updated, as necessary, as part of SWPPP reviews during FY2022. Staff continued to maintain contracts with two spill response contractors and utilized their services to clean up discharges as needed; • Staff inspected vehicle and equipment wash areas as part of facility inspections. Best practices and procedures are documented in facility SWPPPs which are reviewed annually. Staff did not identify any issues with vehicle and equipment washing during FY2022; 47 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. • City staff continued to implement selected BMPs for public streets and parking lot maintenance; • City staff continued to conduct inspections and maintenance of City -owned SCMs in accordance with the SOP. During FY2022, two new positions for the Long -Term Stewardship (L-TS) program were approved for hiring in FY2023 to assist the L-TS Supervisor in expanding and improving upon long-term maintenance of CSWS stormwater projects and municipal SCMs; and • Training about stormwater pollution prevention, good housekeeping, and spill response procedures was provided in various forms to 1,253 municipal staff. Section 9: Program to Monitor and Control Pollutants in Stormwater Discharges to Municipal Systems During the annual report period, inspection and monitoring activities were conducted under the Program to Monitor and Control Pollutants in Stormwater Discharges to Municipal Systems per the SWMP. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 9.1 BMP Summary Table Table 9-1 provides information concerning the BMPs implemented to fulfill the requirements of the Industrial Facilities Program. Table 9-1: BMP Summary Table for the Program to Monitor and Control Pollutants in Stormwater Discharges to Municipal Systems. MM B BMP Description Implementation Status for Annual Re ort Period Maintain an Maintain an inventory of permitted hazardous waste treatment, Inventory of disposal, and recovery facilities, industrial facilities that are subject Industrial Facilities to Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 (SARA), industrial facilities identified with an industrial activity permitted to discharge stormwater to the permittee's MS4, or as identified as an illicit discharge under the IDDE Program. Yes - Implemented For the purposes of this permit, industrial activities shall mean all permitted industrial activities as defined in 40 CFR 122.26. • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Inspection Program Identify priorities and inspection procedures. At a minimum, priority facilities include those identified above in subsection II.H.2.a. Yes - Implemented Evaluate Industrial The Permittee is required to evaluate control measures implemented Facilities at permitted hazardous waste treatment, disposal, and recovery discharging facilities, industrial facilities that are subject to Section 313 of Title stormwater to the III of the Superfund Amendments and Reauthorization Act of 1986 City's MS4 (SARA), industrial facilities identified with an industrial activity permitted to discharge stormwater to the permittee's MS4, or as identified as an illicit discharge under the IDDE Program. For permitted facilities, the municipality shall establish procedures for reporting deficiencies and non-compliance to the permitting Yes - Implemented agency. Where compliance with an existing industrial stormwater permit does not result in adequate control of pollutants to the MS4, municipality will recommend and document the need for permit modifications or additions to the permit issuing authority. For the purposes of this permit, industrial activities shall mean all permitted industrial activities as defined in 40 CFR 122.26. For the purpose of this permit, the Permittee is authorized to inspect the permitted hazardous waste treatment, disposal, and recovery facilities as an authorized representative of the Director. 9.2 Industrial Facility Inventory An inventory of industrial facilities is maintained showing those facilities that discharge to the City's MS4 and have the potential to discharge significant pollutant loads. The inventory and a prioritization process are used to select each year's facilities for inspection and monitoring. Facilities included in the inventory fit into one or more of the following categories: • Hazardous waste TSD facility; • SARA Title III facility (TRI reporter); • NPDES Stormwater permitted facility; • Stormwater No Exposure Certificate facility; • Industrial Wastewater Pre -Treatment permitted facility; and • Facilities identified as having an illicit discharge under the IDDE Program. 9.3 Industrial Facilities Inspection Program The purpose of the Industrial Facilities Inspection program is to evaluate activities at industrial facilities that may impact stormwater discharges and then work with identified problem facilities to reduce stormwater pollution from the facility. Due to a history of stormwater pollution problems found at vehicle maintenance facilities, staff inspect twenty (20) of those facilities annually as well. Table 9-2 shows the data relative to this program for the annual report period. 19 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 9-2: Industrial Facility Pro j,,ram Results Activity Industrial facility inspections conducted Results 41 Vehicle maintenance facility inspections conducted 20 Industrial facilities monitored 8 Illicit discharges detected through this programi. 1 SWPCO NOVs issued2 1 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 2. This data also included in the total NOVs data shown in Table 5-2. 9.3.1 Industrial Facilities Monitoring Program The purpose of the Industrial Facilities Monitoring Program is to monitor stormwater runoff from selected industrial facilities and identify and correct pollution sources related to industrial activities. Table 9-2 shows the number of facilities monitored during wet weather conditions for the annual report period. 9.4 Evaluation Measures The appropriate evaluation measures to reduce polluted discharges to the City's MS4 are industrial inspections and monitoring. Inspection letters note that the inspection is being conducted to satisfy both State and City NPDES MS4 permit requirements. For permitted facilities, inspection reports note completion of State -issued permit requirements such as annual training, annual SPPP updates, and monitoring, and staff send a copy of the report to NCDEQ. As pollution sources are identified through the inspection and monitoring program, CMSWS works with the facility personnel, and NCDEQ as applicable, to eliminate the pollution sources. When violations of SWPCO prohibitions and other applicable regulations are identified, enforcement measures are implemented either by the City or NCDEQ, as applicable. 9.5 Measurable Goals/Planned Activities for Future Program Years Table 9-3 describes the various Industrial Facilities Program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. [THIS SPACE INTENTIONALLY BLANK] 50 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHAPLOTTE.. Table 9-3: BMP Measurable Goals for the Industrial Facilities Program. Measurable Goals BMP BMP Description (by permit term ear 1 2 1 3 4 5+ Maintain an Maintain an inventory of permitted hazardous waste treatment, disposal, Maintain and update the industrial facility inventory as needed. (On -going, Inventory of and recovery facilities, industrial facilities that are subject to Section 313 of years 1 — 5+) Industrial Facilities Title III of the Superfund Amendments and Reauthorization Act of 1986 (SARA), industrial facilities identified with an industrial activity permitted to discharge stormwater to the permittee's MS4, or as identified as an illicit discharge under the IDDE Program. For the purposes of this permit, industrial activities shall mean all permitted industrial activities as defined in 40 CFR 122.26. Inspection Program Identify priorities and inspection procedures. At a minimum, priority Review and update, as necessary, current Industrial Inspection and facilities include those identified above in subsection II.H.2.a. Monitoring Procedures and develop an inspection prioritization strategy. On- oin ears 1 — 5+ Evaluate Industrial The Permittee is required to evaluate control measures implemented at Conduct inspection activities based on established procedures and Facilities permitted hazardous waste treatment, disposal, and recovery facilities, prioritization strategy at 50 facilities for years 1 and 2; and 40 facilities in discharging industrial facilities that are subject to Section 313 of Title III of the years 3 -5+. Conduct stormwater runoff monitoring at 10 facilities for years storrriwater to the Superfund Amendments and Reauthorization Act of 1986 (SARA), 1 and 2; and 8 facilities in years 3 -5+. City's MS4 industrial facilities identified with an industrial activity permitted to discharge stormwater to the permittee's MS4, or as identified as an illicit discharge under the IDDE Program. For permitted facilities, the municipality shall establish procedures for reporting deficiencies and non-compliance to the permitting agency. Where compliance with an existing industrial stormwater permit does not result in adequate control of pollutants to the MS4, municipality will recommend and document the need for permit modifications or additions to the permit issuing authority. For the purposes of this permit, industrial activities shall mean all permitted industrial activities as defined in 40 CFR 122.26. For the purpose of this permit, the Permittee is authorized to inspect the permitted hazardous waste treatment, disposal, and recovery facilities as an authorized representative of the Director. 51 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 9.6 Program Assessment The BMPs shown in Table 9-1 for the Industrial Facilities and Monitoring Program were successfully implemented during the annual report period. Discussion in Section 9 provides more detailed information about implementation efforts. Table 9-4 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 9-4: Program Data Summary INDUSTRIAL FACILITIES PROGRAM FY2019 FY2020 FY2021 FY2022 FY2023 Master industrial inspection inventory sites 514 515 514 517 Facilities inspected' 63 62 60 61 Facilities monitored 12 9 8 8 9. This data is a combination of industrial facilities and vehicle maintenance facilities. 9.6.1 Assessment Summary Program assessment and evaluation was conducted mainly through quarterly meetings involving CMSWS staff as well as Mecklenburg County's annual reports to CSWS. Through these meetings staff determined edits that would improve the facility inventory spreadsheet. Staff also determined that current procedures and activities as performed and as described in SOPS are effective at meeting the goals of the program such as finding and eliminating pollution sources, identifying non -permitted facilities that may require permit coverage, and identifying facilities that are not complying with stormwater permit requirements. Reducing the number of annual facilities inspected from 50 to 40 and the annual facilities monitored from 10 to 8, which was done several years ago, has continued to be effective in allowing staff more time to conduct follow-up inspections and work with facility personnel on correcting problems, thus improving overall outcomes. Section 10: Water Quality Assessment and Monitoring Program During the annual report period, monitoring activities were conducted per the Water Quality Assessment and Monitoring program plan and the SWMP. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 10.1 BMP Summary Table Table 10-1 provides information concerning the BMPs implemented to fulfill the requirements of the Water Quality Assessment and Monitoring Program. 52 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report Table 10-1: BMP Summary Table for the Water Quality Assessment and Monitoring Program. BMP BMP Description Implementation Status for Annual Report Period Water Quality Maintain a Water Quality Assessment and Monitoring Plan. The Plan Assessment and shall include a schedule for implementing the proposed assessment Yes - Implemented Monitoring Plan and monitoring activities. Water Quality Maintain and implement the Water Quality Assessment and Monitoring Monitoring Plan submitted to DWQ. Yes - Implemented 10.2 Water Quality Assessment and Monitoring Plan The City implements the Water Quality Assessment and Monitoring Plan that specifies the basic surface water quality monitoring program and activities to be performed at specified stream sites within the major watersheds in the City. Monitoring is conducted for chemical and physical parameters listed the plan on a fixed interval monitoring basis. 10.3 Surface Water Quality Monitoring Implementation The City conducts the fixed interval monitoring program at the monitoring sites listed in the plan. Following completion of monitoring activities at the end of each permit reporting year (June 30th), monitoring data is assessed to determine whether surface water quality trends are apparent. Table 10-2 shows the data relative to this program for the annual report period. Table 10-2: Surface Water Quality Monitoring Program Results Activity Stream sites monitored Results 23 Sampling events 12 Stream samples collected 276 Laboratory sample analyses conducted 3,312 Stream physical measurements conducted DO, Temp, H, Cond 1,104 Illicit discharges detected through this program' 1 1. This data also included in the total Illicit Discharges data shown in Table 5-15. 10.4 Water Quality Assessment and Monitoring Plan Revisions The City has reviewed the basic monitoring program plan and data generated during the annual report period and proposes no changes to the plan. 10.5 Measurable Goals/Planned Activities for Future Program Years Table 10-3 describes the Water Quality Assessment and Monitoring Program BMPs and the Measurable Goals and Planned Activities for Future Program Years for each BMP by permit term year. 53 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHAPLOTTE.. Table 10-3: BMP Measurable Goals for the Water Quality Assessment and Monitoring Program. BMP Measurable Goals (by permit term ear BMP Description 1 2 1 3 4 5 Water Quality Assessment and Monitoring Plan Maintain a Water Quality Assessment and Monitoring Plan. The Plan shall include a schedule for implementing the proposed assessment and monitoring activities. Maintain the WQ Assessment & Monitoring Plan and update as necessary. (On -going, years 1 — 5+) Water Quality Monitoring Maintain and implement the Water Quality Assessment and Monitoring Plan submitted to DWQ. Maintain and implement the monitoring plan and conduct WQ assessment and monitoring activities per the plan. (On -going, years 1 — 5+) 54 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. 10.6 Program Assessment The BMPs shown in Table 10-1 for the Water Quality Assessment and Monitoring Program were successfully implemented during the annual report period. Discussion in Section 10 provides more detailed information about implementation efforts. Table 10-4 shows a summary of the various items and corresponding data results for activities conducted under the program. Table 10-4: Program Data Summary SURFACE WATER QUALITY MONITORING FY2019 FY2020 FY2021 FY2022 FY2023 PROGRAM Stream sites monitored 23 23 23 23 Stream samples collected 276 253 276 276 Laboratory sample analyses conducted 3,312 3,036 3,312 3,312 Stream physical measurements (DO, Temp, pH, Cond) 1,104 1,012 1,104 1,104 10.6.1 Assessment Summary Program assessment and evaluation was conducted mainly through quarterly meetings involving CMSWS staff as well as through monitoring program annual reports. During meetings, staff discussed a variety of topics related to the Water Quality Assessment and Monitoring program. During FY2O22 topics included, but were not limited to: • reviews of fixed interval data during both ambient and storm -impacted conditions including how often results exceeded surface water standards; • development and validation of a bacteria predictive model; • 3O3(d) list information and discussion; • efforts to conduct microbial source tracking analysis at a local lab; • data trends and success stories; • sediment sampling for PAHs and other emerging contaminants; and • macroinvertebrate sampling locations and frequency. Based on the meeting discussions, no significant changes are proposed to the Water Quality Assessment and Monitoring program for FY2O23; however, staff are continually analyzing various aspects of the program to help ensure that we have an innovative and holistic approach and that we are continuously improving. In recent years, staff worked with a consultant and held in-depth discussions that led to various program improvements and efficiencies. Another monitoring program assessment effort is production and review of quarterly stream use support index maps that help to summarize and communicate vast amounts of surface water quality monitoring data to staff and the public. Index scores for watersheds are constructed for five categories of data (bacteria, metals, nutrients, physical measurements, and biological) and those scores correspond to a particular color on the watershed maps. The scores/maps are a way to get a snapshot of watershed conditions and trends. While this process provides snapshots of 55 • Cd-IARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report conditions, data analytics staff also conduct a much more thorough data analyses and modeling exercises. Section 11: Total Maximum Daily Load (TMDL) Program The City continued to fulfill the NPDES MS4 permit requirements regarding the TMDL Program by implementing the following BMPs within the six minimum NPDES MS4 permit measures. The following sub -sections explain: • The BMPs implemented to meet program requirements; • Program results; • Measurable goals; and • An assessment of program activities conducted during the annual report period. 11.1 BMP Summary Table Table 11-1 provides information concerning the BMPs implemented to fulfill the Total Maximum Daily Load (TMDL) Program requirements. These BMPs pertain to the City's existing TMDL watershed plan that was developed under the City's previous NPDES MS4 permit. Table 11-1: BMP Summary Table for Total Maximum Daily Load (TMDL) Program. BMP BMP Description Implementation Status for Annual Report Period Identify, describe Within 24 months the permittee shall prepare a plan that: and map • Identifies the watershed(s) subject to an approved TMDL with watershed, outfalls, an approved Waste Load Allocation (WLAs) assigned to the and streams permittee, • Includes a description of the watershed(s), Yes — BMP developed, • Includes a map of watershed(s) showing streams & outfalls implemented, and • Identifies the locations of currently known major outfalls within maintained as its corporate limits with the potential of contributing to the applicable during cause(s) of the impairment to the impaired segments, to their the annual report tributaries, and to segments and tributaries within the watershed period period per the contributing to the impaired segments and TMDL Citwatershed • Includes a schedule to discover and locate other major outfalls plan. within its corporate limits that may be contributing to the cause of the impairment to the impaired stream segments, to their tributaries, and to segments and tributaries within the watershed contributing to the impaired segments. Existing measures Within 24 months the Permittee's plan: Yes — BMP • Shall describe existing measures being implemented by the developed, Permittee designed to achieve the MS4's NPDES WLA and to implemented, and reduce the TMDL pollutant of concern to the MEP within the maintained as watershed to which the TMDL applies; and applicable during the annual report 56 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. • Provide an explanation as to how those measures are designed to period per the reduce the TMDL pollutant of concern. City's TMDL • The Permittee shall continue to implement the existing measures watershed plan. until notified by DW . Assessment of Within 24 months the permittee's plan shall include an assessment Yes — BMP available of available monitoring data. Where long-term data is available, this developed, monitoring data assessment should include an analysis of the data to show trends. implemented, and maintained as applicable during the annual report period per the City's TMDL watershed plan. Monitoring Plan Within 36 months the permittee shall develop and submit to the Division a Monitoring Plan for the permittee's assigned NPDES regulated WLA as specified in the TMDL. The permittee shall Yes — BMP maintain and implement the Monitoring Plan as additional outfalls developed, are identified and as accumulating data may suggest. Following any implemented, and review and comment by the Division the permittee shall incorporate maintained as any necessary changes to monitoring plan and initiate the plan applicable during within six months. Modifications to the monitoring plan shall be the annual report approved by the Division. Upon request, the requirement to develop period per the a Monitoring Plan may be waived by the Division if the existing and City's TMDL proposed measures are determined to be adequate to achieve the watershed plan. MS4's NPDES WLA to MEP within the watershed to which the TMDL applies. Additional Within 36 months the permittee's plan shall: Yes — BMP Measures • Describe additional measures to be implemented by the developed, permittee designed to achieve the permittee's MS4's implemented, and NPDES WLA and to reduce the TMDL pollutant of maintained concern to the MEP within the watershed to which the applicable during TMDL applies; and the annual report • Provide an explanation as to how those measures are period per the designed to achieve the permittee's MS4's NPDES City's TMDL regulated WLA to the MEP within the watershed to which watershed plan. the TMDL applies. Implementation Within 48 months the permittee's plan shall: Yes — BMP Plan • Describe the measures to be implemented within the developed, remainder of the permit term designed to achieve the MS4's implemented, and NPDES WLA and to reduce the TMDL pollutant of maintained as concern to the MEP and applicable during • Identify a schedule, subject to DWQ approval, for the annual report completing the activities. period per the City's TMDL watershed plan. Incremental The permittee's plan must outline ways to track and report successes Yes — BMP Success designed to achieve the MS4's NPDES regulated WLA and to developed, reduce the TMDL pollutant of concern to MEP within the watershed implemented, and to which the TMDL applies. maintained as applicable during the annual report period per the 57 • Cd-�ARLOTTE. City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report City's TMDL watershed plan. Reporting The permittee shall conduct and submit to the Division an annual Yes — BMP assessment of the program designed to achieve the MS4's NPDES developed, WLA and to reduce the TMDL pollutant of concern to the MEP implemented, and within the watershed to which the TMDL applies. Any monitoring maintained as data and information generated from the previous year are to be applicable during submitted with each annual report. the annual report period per the City's TMDL watershed plan. 11.2 TMDL Watershed Plan The City maintains a TMDL watershed plan for the applicable identified watersheds that are subject to an approved TMDL within the City's jurisdiction as defined in Part II, Sec J.1 and J.2 within the City's current NPDES MS4 permit. The plan is available for review on the City's website: httns://charlottenc. Lyov/StonnWater/SurfaceWaterOuality/Documents/TMDL%2OWatershed%20Plan%20 FY2021 %20-%20FINAL.pdf 11.2.1 TMDL Watershed Identification Currently, there are seven approved TMDLs applicable to multiple streams in the City, some of which also include portions of Mecklenburg County. These are referenced in the City's TMDL watershed plan. 11.2.2 Outfall Identification for TMDL Watersheds The City developed and maintains an existing outfall inventory for the applicable TMDL watersheds. This inventory is maintained using a GIS coverage to show existing outfalls within the TMDL watersheds. These are referenced in the City's TMDL watershed plan. 11.3 Identification of Existing Measures The City identified existing programs and measures which are currently in use within the City's NPDES MS4 permit and surface water quality monitoring programs that are designed to address the assigned MS4 NPDES regulated waste load allocation stated in the TMDL. These are referenced in the City's TMDL watershed plan. 11.4 Assessment of Available Monitoring Data Fixed interval surface water quality data collected from 2006 through 2022 was analyzed for all applicable TMDL watersheds and pollutants of concern in the City and County. These data help to illustrate surface water quality trends in relation to the NC surface water quality standards. These are referenced in the City's TMDL watershed plan. IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 11.5 Monitoring Plan for Assigned MS4 NPDES Regulated Waste Load Allocation As part of the TMDL watershed plan the City developed a monitoring plan for each pollutant of concern with an assigned MS4 NPDES regulated WLA within each watershed with an approved TMDL within the City's jurisdiction. This is referenced in the City's TMDL watershed plan. 11.6 Identification of Additional Measures The City identified additional measures for implementation within the City's MS4 permit program that are designed to achieve the assigned MS4 NPDES regulated WLA and to reduce the TMDL pollutant of concern to the MEP within the watershed to which the TMDL applies. These are referenced in the City's TMDL watershed plan. 11.7 Implementation of Additional Measures The TMDL watershed plan was updated to discuss the implementation of the additional programs and measures identified in sub -section 11.6. These are referenced in the City's TMDL watershed plan. 11.8 Tracking Incremental Success BMP data parameters were identified to track incremental success within the TMDL watershed plan. These parameters and corresponding data for the annual report period are shown in sub- section 11.10. 11.9 Measurable Goals Table 11-2 describes the various Total Maximum Daily Load (TMDL) Program BMPs and the Measurable Goals for each BMP by permit term year. These BMPs pertain to the City's existing TMDL watershed plan that was developed under the City's previous NPDES MS4 permit. [THIS SPACE INTENTIONALLY BLANK] 59 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE.. Table 11-2: BMP Measurable Goals for Total Maximum Daily Load (TMDL) Program. Measurable Goals BMP IV BMP Description (by permit term ear Ai6_ 1 2 3 4 Identify, describe Within 24 months the permittee shall prepare a plan that: None Develop Update TMDL Watershed Plan as and map • Identifies the watershed(s) subject to an approved TMDL with an TMDL necessary. (On -going, years 3 — 5+) watershed, outfalls, approved Waste Load Allocation (WLAs) assigned to the permittee, Watershed and streams • Includes a description of the watershed(s), Plan per • Includes a map of watershed(s) showing streams & outfalls requirement • Identifies the locations of currently known major outfalls within its s of the MS4 corporate limits with the potential of contributing to the cause(s) of the permit by impairment to the impaired segments, to their tributaries, and to Feb 28, segments and tributaries within the watershed contributing to the 2015. impaired segments and • Includes a schedule to discover and locate other major outfalls within its corporate limits that may be contributing to the cause of the impairment to the impaired stream segments, to their tributaries, and to segments and tributaries within the watershed contributing to the im aired segments. Existing measures Within 24 months the Permittee's plan: None Identify Continue to implement existing measures • Shall describe existing measures being implemented by the Permittee existing per TMDL plan. designed to achieve the MS4's NPDES WLA and to reduce the TMDL measures (On -going, years 3 — 5+) pollutant of concern to the MEP within the watershed to which the within TMDL applies; and TMDL plan • Provide an explanation as to how those measures are designed to by Feb 28, reduce the TMDL pollutant of concern. 2015. • The Permittee shall continue to implement the existing measures until notified by DW . Assessment of Within 24 months the permittee's plan shall include an assessment of None Conduct a Continue to review and assess monitoring available available monitoring data. Where long-term data is available, this review and data as it becomes available. (On -going, monitoring data assessment should include an analysis of the data to show trends. assessment years 3 — 5+) of available monitoring data by Feb 28, 2015. Monitoring Plan Within 36 months the permittee shall develop and submit to the Division a None None Develop Complete Complete Monitoring Plan for the permittee's assigned NPDES regulated WLA as monitoring monitoring monitoring specified in the TMDL. The permittee shall maintain and implement the plan for each activities activities MonitoringPlan as additional outfalls are identified and as accumulating TMDL specified in specified in :1 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. data may suggest. Following any review and comment by the Division the watershed the plan by the plan by permittee shall incorporate any necessary changes to monitoring plan and for the June 30, June 30, initiate the plan within six months. Modifications to the monitoring plan TMDL 2017. 2018. shall be approved by the Division. Upon request, the requirement to pollutants of Assess Assess develop a Monitoring Plan may be waived by the Division if the existing concern by monitoring monitoring and proposed measures are determined to be adequate to achieve the MS4's Feb 28, data data NPDES WLA to MEP within the watershed to which the TMDL applies. 2016. collected collected under the under the monitoring monitoring plan to plan to determine determine effectiveness effectiveness of Water of Water Quality Quality Programs by Programs by December December 31, 2017. 31, 2018. Update Update monitoring monitoring plan as plan as necessary necessary based on based on data review data review and and assessment assessment activities. activities. Additional Within 36 months the permittee's plan shall: None None Determine Continue to evaluate and Measures • Describe additional measures to be implemented by the permittee additional update additional measures designed to achieve the permittee's MS4's NPDES WLA and to measures per TMDL plan, as needed. reduce the TMDL pollutant of concern to the MEP within the that may be (On -going, years 4 — 5+) watershed to which the TMDL applies; and needed to • Provide an explanation as to how those measures are designed to achieve achieve the permittee's MS4's NPDES regulated WLA to the assigned MEP within the watershed to which the TMDL applies. MS4 NPDES regulated WLA and address TMDL 631 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. pollutant of concern by Feb 28, 2016. Implementation Within 48 months the permittee's plan shall: None None None Develop an Continue to Plan • Describe the measures to be implemented within the remainder of implementat implement the permit term designed to achieve the MS4's NPDES WLA and ion plan for additional to reduce the TMDL pollutant of concern to the MEP and identified measures • Identify a schedule, subject to DWQ approval, for completing the additional per the plan. activities. measures that may be needed to achieve assigned MS4 NPDES regulated WLA and address TMDL pollutant of concern by Feb 28, 2017. Incremental The permittee's plan must outline ways to track and report successes None None None Develop a Continue to Success designed to achieve the MS4's NPDES regulated WLA and to reduce the methodolog track and TMDL pollutant of concern to MEP within the watershed to which the y to track report TMDL applies. and report successes data and per the plan. successes for identified additional measures that may be needed to achieve assigned MS4 NPDES IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. regulated WLA and address TMDL pollutant of concern by June 30, 2017. Reporting The permittee shall conduct and submit to the Division an annual None Prepare an annual assessment of activities and data analysis assessment of the program designed to achieve the MS4's NPDES WLA for the TMDL watershed plan. Provide this information in and to reduce the TMDL pollutant of concern to the MEP within the the NPDES MS4 permit annual report. (On -going, years 2 watershed to which the TMDL applies. Any monitoring data and — 5+) information generated from the previous year are to be submitted with each annual report. M IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. 11.10 Program Assessment and Reporting The overall TMDL Program and Watershed Plan were successfully implemented during the annual report period. Table 11-3 shows a summary of the various BMPs implemented and corresponding data results per TMDL watershed for the annual report period. BMPs that apply to the City or a program as a whole, such as television advertisements, cannot be differentiated by watershed and are therefore reported as "Citywide." Additional information concerning these BMPs is provided in the City's TMDL Watershed Plan. [THIS SPACE INTENTIONALLY BLANK] z IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE. Table 11-3: TMDL Program Data Summary for FY2022 TMDL WATERSHED BMP Citywide Irwin Lake Wylie Little Sugar Long McAlpine McKee Steele Sugar Public Education and Outreach Television advertising spots 150 352 922 ' 129,197 NL 440 E- 4 7 28 1 36 0 0 0 Radio advertising spots Social media posts Social media engagements Public requests to stormwater hotline — SWQ related School presentations Students educated at school presentations 84 110 695 50 744 0 0 0 Public presentations 36 1,174 8 745 426,455 178,115 Citizens educated at public presentations Public events Attendees interacted with at public events Website page views Website unique page views Utility bill inserts 154,084 65,026 3,018,063 86,230 186,597 11,591 49,476 62,199 CMCSI education workshops conducted (in -person) 0 339 373 3,721 1 930 Persons trained on CMCSI Environmental notices and brochures distributed Flow Free (Fats Oils & Grease -FOG) brochures distributed Flow Free (FOG) presentations Citizens educated during Flow Free (FOG) presentations 65 IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE,. TMDL WATERSHED BMP Citywide Irwin Lake Wylie Little Sugar Long McAlpine McKee Steele Sugar Public Involvement Storm drains marked 92 6,015 10 226 39 518 0 64 0 Adopt -A -Stream trash removed (Ibs.) 0 2,140 1,480 1,000 350 0 0 Adopt -A -Stream miles cleaned 23 0 39 3 17 0 3 11 Big Spring Clean trash removed (Ibs.) 0 0 3,640 935 1,050 0 2,350 0 Big Spring Clean stream miles cleaned 0 0 2.81 2 0.18 0 1.35 0 Volunteer Monitoring samples collected 5 0 13 2 8 0 1 1 1 Volunteer Monitoring visual observations 9 325 3,738 230 621 0 24 0 0 0 1 0 Trees planted during tree planting volunteer events Adopt -A -Street bags of trash collected Adopt -A -Street bags of recyclables collected Adopt -A -Street miles cleaned Mi IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE,. TMDL WATERSHED BMP Citywide Irwin Lake Wylie Little Sugar Long McAlpine McKee Steele Sugar Illicit Discharge Detection and Elimination (IDDE) Stream walk miles inspected 4 43 58 7 0 0 27 0 Stream walk outfalls inspected 9 79 257 8 0 0 104 0 Dry weather flows detected 0 5 16 5 0 0 6 0 Dry weather flows sampled 0 0 6 0 0 0 1 0 Stream walk IDDE problems detected/corrected 0 1 6 1 0 0 1 0 Multi -family sewer system inspections 6 0 7 0 8 0 0 7 Multi -family community mailers sent 50 Stormwater pollution ordinance violations/NOVs issued 21 6 43 1 25 0 3 7 Stormwater pollution ordinance penalty enforcements issued 1 0 7 0 3 0 0 0 Septic system failures detected/corrected 1 0 1 4 5 1 1 2 Municipal employees trained on IDDE 1,031 0 0 8 0 14 0 0 1 Sanitary sewer use ordinance NOVs issued 28 Sanitary sewer system pretreatment inspections 140 Sanitary sewer system FOG inspections 3,926 Sanitary sewer system pipe miles cleaned 711 Sanitary sewer system ROW miles cleared 115 Sanitary sewer system miles re -lined 18 Sanitary sewer system manholes inspected 1,932 Sanitary sewer system lift stations maintained 139 Sanitary sewer system overflows corrected 1— IDEP business corridor inspections IDEP outfall inspections 8 3 0 0 3 0 3 3 IDEP problems detected/corrected 0 0 4 0 4 0 0 0 IDEP fecal samples collected 0 0 1 0 0 0 0 0 Citizen service requests responded to 49 27 149 13 122 1 18 31 67 im City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHARLOTTE,. TMDL WATERSHED BMP Citywide Irwin Lake Wylie Little Sugar Long McAlpine McKee Steele Sugar Construction Site Stormwater Runoff Control Erosion control ordinance NOVs issued 55 27 1,617 5,100 Erosion control ordinance civil penalties issued Project/site plans reviewed Sites inspected Post -Construction Stormwater Management Post -Construction ordinance NOVs and CARS issued 370 Post -Construction ordinance penalties issued 8 Post -Construction education workshops conducted 1 Citizens educated at Post -Construction workshops 195 Project/site plans reviewed 255 Buffer protected/added (acres) 247 Buffer mitigation plans approved 0 0 4 0 1 0 0 0 Buffer mitigation information requests addressed 25 100 50 10 25 10 25 50 SCMs added 0 4 2 11 3 2 14 5 SCMs inspected 4 64 55 100 47 10 101 74 Pollution Prevention/Good Housekeeping City facilities inspected 10 1 8 2 9 1 1 8 City facility outfalls inspected 37 4 33 2 15 1 0 27 Stormwater pollution prevention plans implemented 9 0 8 0 3 0 0 5 Spill prevention response plans implemented Catch basins top cleaned Catch basins cleaned (entire basin) Stormwater pipelines cleaned (feet) Street sweeping (miles swept) Street sweeping debris (tons) Yard waste collected (tons) 9 0 8 0 3 0 0 5 30,906 587 8,285 30,949 1,005 39,225 •i IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHAUOTTE.. TMDL WATERSHED BMP Citywide Irwin Lake Wylie Little Sugar Long McAlpine McKee Steele Sugar Industrial Facilities Industrial facilities inspected 7 6 3 5 8 1 0 7 5 Industrial facility outfalls inspected 7 9 14 0 0 9 0 Vehicle maintenance facilities inspected 8 0 11 0 0 1 0 0 Industrial facilities monitored 1 0 3 1 0 0 2 1 Illicit discharges or connections detected/corrected 0 0 0 0 0 0 0 1 Surface Water Quality Monitoring Fixed interval TSS samples collected 13 13 51 13 65 13 13 26 Fixed interval Turbidity samples collected 13 13 51 13 65 13 13 26 Fixed interval Dissolved Oxygen samples collected 12 12 48 12 60 12 12 24 Fixed interval Fecal Coliform samples collected 13 13 51 13 65 13 13 26 CMANN Turbidity observations/readings' 24,999 9,080 61,969 6,237 31,616 5,703 7,669 28,056 CMANN Dissolved Oxygen observations/readings 28,333 7,111 79,045 6,176 42,639 5,978 6,119 28,056 Action/watch level follow-up investigations conducted Z 0 0 2 0 0 0 0 0 1. CMANN is an automated monitoring network that collects data readings typically once per hour (select sites collect readings every 15 min.). Data reported is QA/QC accepted data only. 2. Includes Fixed Interval and CMANN program investigations. mw IM City of Charlotte — MS4 Stormwater Management Program — FY2022 Annual Report CHART o M. [THIS PAGE INTENTIONALLY BLANK] 70