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NCS000515_10Stormwater Management Program Plan_20200921
Comprehensive Stormwater Management Program 7.0 Stormwater Manaaement Prosaram Plan (SWMPI The SWMP must be designed to reduce the discharge of pollutants from the Town of China Grove and the ETJ to the maximum extent practicable (MEP). The SWMP must be implemented and enforced to satisfy the appropriate water quality requirements of the Clean Water Act. The period of time for fully developing and implementing the SWMP is five (5) years from the effective date of the NPDES stormwater permit. The Towes permit became effective in 2007 The Town has completed portions of their SWMP. Specific BMPs or tasks which have been completed are indicated as such. BMPs remaining to be completed are identified for years six through ten, or 2013 through 2017. 7.1 Public Education and Outreach on Stormwater Impacts A public education program and other outreach activities that will inform the community about the impacts of stormwater discharges on receiving streams and the steps that the public can take to reduce pollutants in storm water runoff will be developed and implemented. The Best Management Practices (BMP) that will be developed and implemented are summarized in Table 7.1.1 Pease Commission No. 212129 March 2012 § tb , .4 k � ■ § § , cc 6 �� E\ 38 §{ 0 000 0. E �E AIL < §2 R R CC x x �a)x x moox x mr- x x sex x \\ ¢0 M k° � �$ 2-©k c�e� §°c® •�®� �a)-a) (\kk§ )LD 152eca 7■ate Ica E as o $ r-�� �k���S ac cr k�iƒ�-0 �0 E§ER®A I _ E2=§ 0�__ oo $ �E c 3 a9)§- m$: §CLR �§CD §0 CL Icfab0 ca a) 0 CL \ / CL ' = a) ` E e E a o §=c&f M72b0 afa�am e cu 0 tJ�g ���CE oa)5 CD GRe�e \22§r- 2_ E• �o§o ei§Z5 R$.0mEa � k e0 c a IL c ca- c2 m \� f�2 E2� (D0) k E.cm 9 9§ 222 Bc <m0 m Comprehensive Stormwater Management Program 1 7.1.1 Target Audiences School children, households, businesses and industries will be the target audiences. They can be reached in a cost effective manner and could make significant contributions to the prevention of stormwater pollution. 7.1.2 Target Pollutant Sources Lawn and gardening activities can result in contamination of stormwater. Stormwater runoff may be contaminated with pesticides, fertilizers and sediment. Environmentally friendly landscape management can effectively reduce water use and runoff of contaminants. It is important for municipalities to set good examples, which may include avoiding or phasing out use of weed killers or harmful pesticides and implementing environmentally friendly lawn and garden activities on municipal property. Practices to be implemented by the municipality and to be promoted to property owners, may include landscape planning and design, planting indigenous species, soil testing, the reduction or elimination of the use of fertilizers and pesticides, use of mulches, efficient irrigation, and reduction of turf (lawn) areas in favor of non -turf areas where practical. Benefits of environmentally friendly design include: ■ Reduced maintenance requirements ■ Prevention of over application of fertilizers ■ Minimization of watering requirements ■ Reduced mowing requirements, which reduces air, water and noise pollution ■ Stabilization of exposed soils ■ Reduced probability of stormwater contamination Proper disposal of trash and elimination of litter. Disposal of household chemicals, used oil, and anti freeze. 7.1.3 Outreach Program The Town will implement a public education program to distribute educational materials to the community and conduct equivalent outreach activities about the impact of stormwater discharge on water bodies and the steps that the public can take to reduce pollutants in stormwater runoff. The town's efforts may include but are not limited to: ■ Using stormwater educational material provided by the State, EPA, environmental, public interest or trade organizations. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program ■ Informing individuals and households about the steps they can take to reduce stormwater pollution, such as ensuring proper septic tank maintenance, modifying landscaping, disconnected impervious area (such as roof downspouts), ensuring the proper use and disposal of landscape and garden chemicals including fertilizer and pesticides, protecting and restoring riparian vegetation, and properly disposing of motor oil, household hazardous waste, or pet waste. ■ Inform individuals and groups how to become involved in local stream, lake, and river restoration activities as well as activities that are coordinated by youth service and conversation corps and citizen groups. ■ Tailoring the program, using a mix of locally appropriate strategies, to target the specific audience. For example, providing information to garages on the impact of oil discharges or the explanation to school children that storm water flows into a nearby creek and eventually ends up in the water they drink. 7.1.4 Decision Process Each BUT was judged to be an effective and economical tool for educating the general public and specific groups in the community. 7.1.5 Evaluation The Town will form a staff committee to review all stormwater program BMPs for effectiveness. The recommendations of the committee will be included in the annual report. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program 7.2 Public Involvement and Participation Public involvement and participation can broaden support for the program, make implementation easier and increase the likelihood for the success of the program. The Town of China Grove will as a minimum comply with State and local public notice requirements when implementing a public involvement/participation program. EPA recommends public participation in the development, review and implementation of SWMP. The process should make efforts to reach out and engage all economic and ethnic groups. The public notification process will endeavor to reach out and obtain participation and support from all economic and ethnic groups. The Town will endeavor to provide opportunities for public participation in program development and implementation. The BMPs that will be developed and implemented by the Town are summarized in Table 7.2.1. Opportunities for the public to participate in program development and implementation may include: ■ Serving as a citizen representative an stormwater management panel ■ Attending public hearings ■ Working as citizen volunteer to educate other individuals about program ■ Assisting with program coordination with other pre-existing programs ■ Participating in volunteer monitoring efforts Pease Commission No. 212129 March 2012 r a 2 O L O L �o L m w L ciQ 0 E y E E a L N o •� L O .c d rb •— E cn — E c a 0 h° H CL ffl m T x M li co x co x c co E C Co Q L cm C O a i E .nn c co co co (3.2 y .,°— V � Q C'3 ° C a a O ° y O E 15 y Q IC ) ° M N co N N C E g m°' C O 2 L m 'Z W 3�i .0 °ca L y ° S c >o CIS 2.9 �� a` m rn a o a mE c ccc (D � U ° E E o L U) r (y Comprehensive Stormwater Management Program 7.2.1 Target Audience The public hearing for the development of the Stormwater Management Program and the NPDES Phase II application will target all interested and affected members of the China Grove community. 7.2.2 Participation Program Public Hearings are set by Town Council during their regularly scheduled meetings. The date is announced and the time and place of the Public Hearing is advertised for a minimum of 10 days prior to the hearing. The legal notices for hearings are administered by the Town Clerk and may be reviewed for compliance by the City Attorney. 7.2.3 Decision Process The Town will use the public hearings as the most direct and efficient means of involving all interested citizens in the process of developing and implementing the Stormwater Management Program. 7.2.4 Evaluation Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program l 7.3 Illicit Discharae Detection and Ellmination 40CRF 122.26(6)(2) defines an illicit discharge as any discharge to an MS4 that is not composed entirely of stormwater, except discharges as may be allowed pursuant to an NPDES permit, including those resulting from fire fighting activities. Non-stormwater discharges can include discharge of process water air condition condensate, non -contact cooling water, vehicle wash water or sanitary waste. These discharges typically result from unauthorized connector to the storm sewers. Other non-stormwater discharge of flows may include the following: ■ Water line flushing ■ Landscaping irrigation ■ Diverted stream flows ■ Foundation drains ■ Pumped ground water ■ Potable water discharges ■ Crawl space pumps ■ Law watering ■ Residential car washing ■ Swimming pool discharges ■ Street wash water The program should include the following: ■ Procedures for locating priority areas likely to have illicit discharges ■ Procedures for training the sources of an illicit discharge ■ Procedures for removing the sources of the discharge ■ Procedures for program evaluation and assessment A program must be developed, implemented and enforced to detect and eliminate illicit discharge into the storm sewer system. Pease Commission No. 212129 March 2012 C r s. ►" a, M C O v C r— _N N C 7 y CO) c r�: c N d � m L °° W 3 c 3 > (� W 3 0 L L maao�E w oT� 00 oEL>,.E3:CS_ � E o a O cc ¢ go c'C mQ c °vm oo O Or- ¢ °'c o- .:p 0 ca CD a; cts y w y m Vas ° ` .. m U) o�C °m'° aaOEE E 3 v a) 3 0 3 °� 0O'o ° S 3 3¢ ~ D>EE QOEE ~ H Qo �Q`O CCa)'Co Qo in in U) w c cn OC o T a) cc co mI- x x } to x x 7 O a) C > N vi O C O N E c rn ID y o E o E (Dco cma •N � 3 a)C. n of l0 V _N 5 (D ` a) �. (DO C C7 O N T d-0 O > Op (a a1 C L a N O p W ° a)m 093t CD (D a 3 0 O T 4? C N CD > d (D a Y °) 3 o Cam; °E C c.E- C �� of m _E p my c y o C E CD 0 y C cm co C C a V C (D ` U U O N C O c C 3 a) a) co O L O V U N 'p 22 ar E0 2 Z `o a.S L °' 3 L a) E y L m m L m L E ° O VJ c ca tm a L O >+ (A ° O O C c G � 0ca w o 0 C o o E °(o ° -•5a) co cEa)o•°'C a)�(a IL r2 E CO C •C ` O C V U 7 N E 00 O�CA °� ° ° ° ° °sUU13 o ca ° a= y U O m� E U d a�oa V C)L y O C C °�`aEmcls O C w y cu aO °m c c°O afa�y cm ca3 YEa) D I'D°3 c�>+co CL CD �� aa)CLM a) E" s�E"0oa°i Ec�E w m 16c � 0 D o n`_ E'c5 3: CCUa CL—.0 0 voi FT- N ,) .It lA N N W-1 CE f W IL 30 Ey 3ca E 3 EA a c2 O O 'C n 'C 'C O �E Cl)E —O �E U W.- 0 IL 3Q 3Q 3Q N H F°- 0 a GC o }r } w X X } co X X r` X 2� } W� O '0 0 N o N aa) cc w 01 � •3 a m E E w y Q N a) C C y O O w 0 N C y ca c — a E 00) U C y v y N �� a E y0 a�i IL C.)3 vTi m o o M E n 3 w cts o c D—E p 3 •— O cm_ FE ca 3 = c o E E c c o a) c y += 2 yU CD cE :� n VJ ,U c-0 y o p Dom � w3 f0 I� -o m ►-1 Comprehensive Stormwater Management Program 7.3.1 Storm Sewer System Map A storm sewer map showing the location of all outfalls and the names and location of all receiving streams will be prepared. Aerial photographs of the area encompassed by the boundary of the area of extraterritorial jurisdiction (ETJ) will be utilized as the base map. Topographic data (contours) and streams centerlines data will be obtained from the North Carolina Department of Transportation database. Information will be obtained from the Rowan County GIS USGS. In addition to these sources of information including river basin, stream and tributary names and subbasin designations will be obtained from the Yadkin -Pee Dee Basinwide Water Quality Management Plan. Mapping of the Town's stormwater system has been prepared and is included with this report. Maps were prepared using ESRI's ArcView mapping software and are GIS compatible. Appendix A includes maps showing receiving watersheds, receiving streams, and outfall locations. Detailed system maps have been prepared at a scale of 1"=150' and include aerial imagery, contours, streams, parcels and roads. The detailed system maps are included in Appendix M. An index map is provided which shows, in green shading, the maps included with this report. { 7.3.2 Regulatory Mechanism This part of the program will establish the legal and administrative authority to regulate, respond to and enforce regulations prohibiting illicit discharge in the community. The program will be comprehensive and may include development and adoption, new regulations or amendment of existing regulations. It may also include the review of current building codes (plumbing) and enforcement practices to ensure appropriate connections are prohibited and integration of this part of the program with other programs including public outreach and employee training. The illicit discharge detection and elimination (IDDE) program will be established under the same jurisdiction that will oversee the other MS4 NPDES requirements. This may be an existing authority such as the Town Manager or department head or it could be a new committee or authority formed to administer the program. It may also be appropriate to consider collaborating with other communities, which share the same receiving streams and to consider implementation based on the watershed basin. The Town of China Grove will demonstrate that it has adequate legal authority to successfully implement and enforce its own IDDE program and will work Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program with Rowan County in areas such as plumbing and enforcement and public health where jurisdiction and enforcement responsibilities overlap. If deemed appropriate after appropriate investigation and consideration a new, stand alone illicit discharge ordinance can be developed that supersedes all other related local regulations. The IDDE program whether accomplished through existing mechanisms or through a new ordinance would include the following key components: ■ Prohibit illicit discharge ■ Investigation of suspected discharges ■ Require and enforce elimination of illicit discharge ■ Address unique conditions or special requirements ■ Clearly define illicit discharge ■ Clearly define illicit connections ■ Identify non-streamwater discharges or other flows that are not illicit ■ Clarify right-of-way ■ Define enforcement tools and provide escalating enforcement measures ■ Establish tracking and reporting system The Town has adopted a stormwater quality management and discharge control ordinance which provides the legal and administrative authority to implement the IDDE program. A copy of the ordinance is included with this report. 7.3.3 Enforcement The new IDDE ordinance or other regulations, which became part of the IDDE program, will define enforcement tools. The choice of tools will be appropriate for the volume and type of illicit discharge, the impact of the discharge or water quality and will consider whether the discharge was intentional or accidental. The enforcement measures will be escalating beginning with notification and requests for voluntary criminal prosecution for serious violations or on -going non-compliance. Methods of approval will also be provided. Enforcement tools may include the following: ■ Written notification with voluntary compliance ■ Administrative fines/penalties imposed by responsible local jurisdiction ■ Civil penalties imposed by judicial authority ■ Compensatory action Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program rr Criminal prosecution 1. Cost of abatement of violation or property lien ■ Cease and desist order(s) ■ Suspension of related public services (water and sewer) ■ Stop work order ■ Revocation of permits (building) 7.3.4 Detection and Elimination The approach for the detection and elimination of illicit discharge will include an assessment of the potential for illicit discharges. Mapping and other available data will be used to determine the potential severity of illicit discharges within the program area. A priority system for identifying discharge will be developed, which ranks businesses based on their potential for illicit discharge. A typical ranking for business types would be as follows: High Potential Automobile -related business/Facilities and heavy manufacturing Moderate Potential Printing companies, cleaners and laundries, photo processors, utilities, paint stores, water conditioners, laboratories, construction companies and medium and light manufacturing Low Potential Institutional facilities, private service agencies, retail establishments and schools 7.3.4.1 Procedures locating priority areas This part of the program will use mapping and other available data to determine the potential for illicit discharges. The procedures will include: Delineate watersheds and drainage basins within MS4 area Compile available mapping and data including land use Screen and rank potential illicit discharges 7.3.4.2 Procedures for tracking sources of illicit discharge Field work, consisting of rapid field screening of outfalls in priority (� watersheds and drainage basins, will be key to tracking the sources of illicit discharges. Monitoring of suspect outfalls to determine the type Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program �- and characteristics of the flow may also be required. The procedures will include reconnaissance of streams (walk) to inventory and measure storm drain outfalls. The reconnaissance can reveal obvious potential illicit discharges, which may have high turbidity, strong odors or color. Simple tests using test strips to indicate excessively high or low ph can also be utilized. Discharge such as a fuel or oil spill can also be detected during the reconnaissance. A typical outfall Reconnaissance Inventory/Sample Collection Field Sheet is included in Appendix I. The next step would be to select the type of indicators needed to determine if the discharge is illicit and implement a plan to monitor the discharge. The work along with the analytical services may be performed in house or may be out sourced. 7.3.4.3 Procedures for removing source of the illicit discharges Steps will be taken to eliminate an illicit discharge once it has been identified. Elimination of the illicit discharge will require a determination of the following: Who is responsible for the discharge? What methods can be used to eliminate the discharge? How long will it take to eliminate the discharge? How can the elimination of the discharge be confirmed? Initial action will include the identification of the responsible party and issuance of a notice of violation (NOV). Methods of removal will involve education of the responsible party and enforcement. Some discharges can be eliminated simply by making the property owners aware of the problem while the elimination of other discharges may require an aggressive enforcement approach. 7.3.4.4 Procedures for evaluation of plan to detect and eliminate illicit discharges As a minimum the IDDE program should be evaluated annually to determine if progress is being made towards measurable goals. A tracking system will be developed and will include the following: ■ Up-to-date mapping showing outfall locations ■ Data on surveyed streams with locations of obvious, suspect and potential illicit discharge ■ Results of sampling for specific streams, outfalls and storm drains Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program r ■ Frequency of hotline use and related number of confirmed illicit discharges ■ Cost of the program ■ Number of discharges eliminated ■ Number and status of enforcement actions The evaluation of the program can be utilized to assess the effectiveness of the various elements of the program and resources can be shifted to areas that are most effective at eliminating the discharges 7.3.5 Non-Stormwater Discharge Non-Stormwater discharges can include process water, air conditioner condensate, non -contacting cooling water, vehicle wash water or sanitary waste and typically are the result of an unauthorized connection to storm drains. These discharges can be significant sources of pollutants and are illegal. Elimination of non-stormwater discharges is an effective BMP and it will be implemented if it is determined that non-stormwater discharges are significant contributor of pollutants in the MS4. Most non-stormwater discharges can be detected by observing discharge points in the stormwater collection system during periods of dry weather. Indication of these discharges may include strains, smudge, odors and other abnormal conditions. The identification of non-stormwater discharges should be a part of every facilities operation and maintenance program. Annual inspection should be conducted to determine, if new processes, procedures, additions or plant changes have resulted in unintentional or unauthorized connection to the stormwater system. 7.3.6 Occasional incidental non-stormwater discharges Occasional incidental discharges are difficult to detect. The most effective way to manage these discharges is to promote pollution prevention practices in the community that prevent them from occurring. Many common practices and behaviors can cause occasional discharges. Individually the practices cause relatively small discharges and pollution. However, collectively these discharges can produce significant pollutant loads. These practices may include: ■ Individual and group car washes ■ Swimming pool draining ■ Household/waste storage and disposal ■ Changing fluids in vehicle(s) Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program ■ Septic system maintenance ■ Pressure washing of driveways and houses Car washes are often used as fund raising events by Churches and charity organizations. Septic systems are often taken for granted until they backup or break out on the surface of the lawn. Subsurface failures, which are most common, go undetected. Shade tree mechanics change their own automobile fluids. The typical home garage storage building or tool shed contains a lot of products that are hazardous including paints, stains, solvents, lubricants, pesticides, herbicides and cleaning products. Spills and leaking containers can result in the discharges of these products. Routine maintenance of swimming pools can result in the discharge of chlorinated water or filter backwash water. The Town will initially exclude these discharges from the category of illicit discharges and will promote the elimination of these discharges through public education, media and outreach programs. 7.3.7 Outreach Employee training programs will be established to teach employees about stormwater management, potential sources of illicit discharges and BMPs. The tobjective of the training programs will be to instill all personnel with a thorough understanding of the SWMP purpose, practices for detecting discharge and procedures for eliminating illicit discharges. The program may be standardized and repeated as necessary to train new employees and to keep objectives in front of other employees. The program will be flexible and will be adapted, as the Town's needs change over time. Frequent communication with employees will be key to insuring that the outreach to employee is effective. This part of the SWMP will be coordinated with the pollution prevention/good housekeeping for municipal operations part of the SWMP. Educational materials will be distributed to targeted businesses. The outreach materials will be designed to educate business owners and employees about pollution prevention practices and regulations. The public will participate in the development and implementation of the outreach portion of the program. 7.3.8 Decision Process The IDDE program will result in the development, implementation and enforcement of a comprehensive program with the goal of eliminating all illicit discharges in the MS4. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program The individual BMP's have been identified and presented in Section 7.3.1 along with measurable goals and responsible parties. The IDDE program includes measures to identify, locate and eliminate illicit discharges by providing the following: ■ Procedures for locating likely priority areas for illicit discharges ■ Procedures for tracking the source of an illicit discharge ■ Procedures for removing the source of the discharge ■ Procedures for program evaluation and assessment 7.3.9 Evaluation The detection and elimination of illicit discharges are frequently a new idea for many communities IDDE programs should be flexible to respond to the changing needs and attitude of the community. The program should be evaluated annually and modified as needed. Tracking systems should be in place to measure progress towards the measurable goals. The tracking system should include: ■ Updated mapping of the program area ■ Stream survey with location of known or potential discharges ■ Program -to -date costs ■ Results of sampling and analysis of streams, outfalls and storm drains ■ Number of hotline calls ■ Number of discharges detected and eliminated ■ Number and status of enforcement actions Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program 7.4 Construction Site Stormwater Runoff Control The Town of China Grove will rely on the Sedimentation Pollution Control Act of 1973 (SPCA) (Amended through 1999) NCGS Chapter 113A Article 4 to provide the measures to control construction site stormwater runoff for all land -disturbing activities on tracts of 1 acre or more. The requirements of the SPCA are enforced by the NC Department of Environment and Natural Resources Division of Land Resources Land Quality Section. The act is administered and enforced locally by the Rowan County Department of Environmental Services Erosion and Sediment Control. A copy of the SPCA is in Appendix D. The Town will monitor the Rowan County Department of Environmental Services program for effectiveness in meeting the stated goals within the Town's jurisdiction. DWQ Stormwater general permits will also be relied upon. The general permit authorizes the discharge of stormwater, which has been adequately treated and managed in accordance with an approved Erosion and Sedimentation Control Plan to the surface waters of North Carolina or to a separate storm sewer system. Any other point source discharge to surface waters is prohibited unless covered by another permit, authorization or approval. The general permit is applicable to point source discharges of stormwater from construction activities disturbing one (1) or more acres of land. Coverage under the general permit is not effective until issuance of an approval for the Erosion and Sedimentation Control Plan by the Land Quality Section of the Division of Land Resources. No construction and land disturbing activities shall commence prior to approval of the Plan. Any owner or operator not desiring to be covered or limited by the general permit must submit an application for an individual NPDES permit in accordance with 15ANCAC 2H.0100. The implementation of the approved plan is a requirement or condition of the general permit. Failure to implement or deviation from the approved plan will be a violation of the terms and conditions of the permit. Once construction has started all erosion and sedimentation control facilities and stormwater runoff discharges shall be inspected. Corrective action must be taken immediately to control the discharge of sediments outside the disturbed limits of the construction. Records of inspections, corrections and cleanup activities shall be maintained by the operator and made available to DWQ upon request. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program The Town will develop procedures and protocol for tracking construction projects within the Town's jurisdiction with erosion and sedimentation control permits issued either at the State level (NCDENR-DLR) or locally (Rowan County). Procedures for conducting site inspections and document tracking of violations and follow-up will be established. Pease Commission No. 212129 March 2012 L L �a E= E= 00 0 = 0 'c `� 'E O 'c �' 'E ¢a 0¢ 0Q I- ~ x x MIMx x CO x x x x co x x O z L Z vW c L 0 O yU.o Z 0 cC (� G. � CO _W0 'D 0 O Co.0 m O C1 _ d 3 .0 c c O W y C i N L N '= O . O C_ CC7 L L CD ° T 0. o O (n O C C L Ec QTo�I-° o c co cu 0 p� O y 0 .0 0 E IL O C 7 G 0 0 m U CO 0 a `c°N C W C cc000 C a:EcO Eon L C> U a)f0 N c ° N v E O C `C L W N 2 O Nm n. c .— N N N N v z r 0 m O U v Comprehensive Stormwater Management Program 7.5 Post -Construction Stormwater Manaaement in New Development and Redevelopment The program must insure that controls are in place to prevent or minimize adverse water quality impacts. Strategies must be developed and implemented, which include a combination of structural and/or non-structural best management practices appropriate for the Town of China Grove. The program must address projects that disturb greater than or equal to one (1) acre including projects less than one (1) acre that are part of a larger common plan of development or sale. Ordinances or other regulatory mechanisms must be used to the extent allowable under local law to address post construction runoff. 7.5.1 Stormwater Management Options Low density development must, at a minimum, employ the following non- structural stormwater management practices: ■ Built -upon area of 24% or less. Where different built -upon area t. thresholds are established through existing regulatory programs, the more restrictive threshold shall be maintained. ■ Stormwater runoff is primarily transported through vegetated conveyances. ■ A 30 foot vegetated buffer shall be maintained on all waters of the state. Where different buffers are established through other regulatory programs, the more restrictive buffer shall be maintained. High density development must, at a minimum, employ the following stormwater management practices: ■ Stormwater treatment of the volume of post -construction stormwater runoff resulting from the first 1-inch of precipitation. Where different storm event thresholds are established through existing regulatory programs, the more restrictive threshold (larger storm event) shall apply. ■ Stormwater treatment shall be designed to achieve 85% Total Suspended Solids removal. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program Post -development runoff conditions shall be such that either: ■ The runoff volume draw down to the pre -storm design stage within 5 days, but not less than 2 days, or ■ The post -development discharge rate shall be no larger than the predevelopment discharge rate for the 1-year, 24-hour storm event. 7.5.2 Operation and Maintenance The operation and maintenance requirements for BMP's will vary, but every BMP will most likely require maintenance at some point. The maintenance needs will vary with the type, size, age, location, etc. of the BMP. The owner/operator of all structural BMP's will be required in the plans submitted for approval to include the requirements for long term operation and maintenance of the BMP and will be required to stipulate the party that will be responsible these actions. The owner/operator will be required to perform at a minimum annual inspection and to submit a report of the inspection to the Town. 7.5.3 Control of Sources of Fecal Coliform The Town of China Grove will rely on the Rowan County Code Enforcement, Environmental Services and Health Department to ensure proper design, permitting, operation and maintenance of on -site wastewater treatment systems for domestic wastewater in order to control to the maximum extent practicable this source of fecal coliform. 7.5.4 Development/Redevelopment draining into SA Waters This program does not include development/redevelopment draining to SA waters. 7.5.5 Development/Redevelopment draining into Trout (Tr) Waters This program does not include development/redevelopment draining to Trout (Tr) waters. 7.5.6 Development/Redevelopment into Nutrient Sensitive Waters This program does not include development/redevelopment draining to r Nutrient Sensitive Waters (NSW). Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program 7.5.7 Yadkin -Pee Dee Basinwide Water Quality Management Plan The Town of China Grove will endeavor to develop a program that will take into consideration and be consistent with the management strategies and initiatives of the Yadkin -Pee Dee Basinwide Water Quality Management Plan. Pease Commission No. 212129 March 2012 c W dCWMF- M Co aa--QE J O >, w o o O c Na C. - V ca :? `m 20VY1°�3 E aU) }0 C� Cco } c� v c cc 'U L C7 3 as CIS C y w m O o ca c -2 O CIS O C a in y N O L ca 0 G. aD C o ca E m c L '2 C O � U ar- O O >t N 0 0 o. rT— -I N 0 C14 N N v z o 0 v m m Rai Comprehensive Stormwater Management Program L 7.5.8 Non -Structural BMP's Several non-structural BMP's are proposed for inclusion in the program. The BMP's include the development and implementation of ordinances, policies and education programs. 7.5.9 Structural BMP's A comprehensive list of structural BMP's have been included in the BMP summary table. It is anticipated that the development of policies, ordinances and/or standards will result in the utilization of some of the BMP's. The structural BMP's include storage practices, filtration practices and infiltration practices. Appropriate implementation is imperative and will be ensured by the following: ■ Preconstruction review of BMP designs ■ Inspection during construction to verify that BMP's are built as designed ■ Post construction inspection and maintenance of BMP's ■ Enforcement of penalties for noncompliance with design, construction or operation and maintenance. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program C 7.6 Pollution Prevention/Good Housekeeping for Municipal Operations The following will be considered in the development of this aspect of the program: maintenance activities, maintenance schedules, and long-term inspection procedures for structural and nonstructural storm water controls to reduce floatables and other pollutants discharged from the storm sewers; controls for reducing or eliminating the discharge of pollutants from streets, road, highways, municipal parking lots, maintenance and storage yards, maintenance shops with outdoor storage areas, salt/sand storage locations and procedures for properly disposing of waste removed from the storm sewers and areas listed above (such as accumulated sediments, floatables, and other debris). Operation and maintenance will be an integral component of the programs and BMP's. 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L amomy N(D 0 c0,1 a) caCCS y N ca �y y N co �yio $ m 3 'coo CL 6 c`o > >> cLoa HQ.cn JEn o cLE a cn vi D co i > Q o Ccav, r N C9 d' In a7 f- N N u re Comprehensive Stormwater Management Program 7.6.1 Affected Operations Municipal operations that will be impacted by the operation and maintenance program for pollution prevention/good house keeping for municipal operation include the following: ■ Parks and Recreation vehicle ■ Equipment Maintenance ■ Sanitation The following facilities operated by the Town are subject to NPDES General Permits or individual NPDES permits for discharges of stormwater: Permit No. Certificate of Coverage 7.6.2 Training Employee training programs will be developed. The training programs will teach the Town's employees about stormwater management, potential sources of contaminants and BMP's. In addition the training program will endeavor to instill all the Town's personnel with a thorough understanding of the plan for pollution prevention/good housekeeping for their municipal operations. Training will include posters, employee meetings, courses and bulletin boards about stormwater management, potential pollution sources, and prevention of pollution in surface runoff. Field training programs will also be used to show employee's actual potential sources of stormwater pollution and to demonstrate the implementation of site specific BMP's. The program will be standardized and repeated as necessary to train new employees and to refresh employees with prior training. The employee - training program will be an on -going process. The Stormwater Management Fact Sheet Employee Training EPA 832-F-99-010 will be utilized as a reference for developing and implementing the training program. A copy is included in Appendix E. 7.6.3 Maintenance and Inspections A preventive maintenance (PM) program and for operations will be developed. The PM program and record keeping will include vehicle, equipment, and material storage areas. Periodic inspections will ensure all equipment and materials storage containers are in good condition. Any problems or issues that Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program r may have an impact on stormwater quality will be recorded and corrective L. action taken. Vehicle washing and fueling operations will be inspected annually to ensure that they are in good working order and that they minimize exposure of stormwater to chemicals, fuels and other pollutants. Schedules and procedures will be established for the inspections and the record -keeping system will document inspections. Records will include the following: ■ The date, exact place, and time of material inventories, site inspections, sampling observation, etc. ■ Names of inspector(s) and sample(s). ■ Analytical information, including the date(s) and time(s) analyses were performed or initiated, the analysts' names, analytical techniques or methods used, analytical results, and quality assurance/quality control results of such analyses. ■ The date, time, exact location, and a complete characterization of significant observation, including spills or leaks. ■ Notes indicating the reasons for any exceptions to standard record keeping procedures. ■ All calibration and maintenance records of instruments used in storm water monitoring. ■ All original strip chart recordings for continuous monitoring equipment. Records of any non -storm water discharges. The Stormwater Management Fact Sheet Record Keeping EPA-F-99-005 will be utilized as a guide for developing the Town's Record Keeping System. A copy of the document is in Appendix F. 7.6.4 Vehicular Operations A program for inspection of vehicles and equipment and stored materials storage will be developed to reduce or eliminate to discharge of pollutants to stormwater. This will include vehicle maintenance and fueling stations and salt/sand storage areas. A material inventory system involves the identification of all sources and quantities of stored materials that may be exposed to direct precipitation or storm water runoff at a particular site. Stored materials are substances such as salt, sand, crushed stone, mulch, chemicals, raw materials, fuels, pesticides, and fertilizers. When these materials are exposed to direct precipitation or storm water runoff they may be carried to a receiving water body. Therefore, identification of these materials helps to determine sources of potential contamination and is the first step in pollution control. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program Maintaining an up-to-date inventory of all materials (hazardous and non- hazardous) will help to track how materials are stored and handled on and identify which materials and activities pose the greatest risk to the environment. The following are the basic steps in completing a materials inventory: ■ Identify all chemical substances present in the work place. Review the purchase orders for the previous year. List all chemical substances used in the work place and then obtain the material safety data sheet (MSDS) for each. ■ Label all containers to show the name and type of substance, stock number, expiration date, health hazards, suggestions for handling, and first aid information. Unlabeled chemicals and chemicals with deteriorated labels are often disposed of improperly or unnecessarily. ■ Clearly mark on the inventory those hazardous materials that require specific handling, storage, use, and disposal considerations. The key to a proper materials inventory system is continual updating of records. Maintaining an up-to-date materials inventory is an efficient way to identify the materials that are handled and whether they contribute to storm water contamination problems. The stormwater Management Fact Sheet Materials Inventory EPA 832-F-99- 021 will be used as a guidance document for preparation of the Materials Inventory. A copy of the document is in Appendix G. A Spill Prevention Plan specifies materials handling procedures and storage requirements and identifies spill cleanup procedures for areas in which spills may potentially occur. The plan standardizes operating procedures and employee training in an effort to minimize accidental pollutant releases that could contaminate storm water runoff. Spill prevention will be part of a comprehensive Best Management Practice Program to prevent runoff contamination. This program will also include stormwater contamination assessment, flow diversion, record keeping, internal reporting, employee training, and preventive maintenance. Public agencies that transport or store petroleum products are required by State and federal law to prepare spill control and cleanup plans. The existing plans will be re-evaluated and revised to address storm water management issues. Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program The Stormwater Management Fact Sheet Spill Prevention Planning EPA 832-F- 99-071 will be utilized as a guideline document for the integration of spill prevention planning into the BMP's for preventing stormwater runoff contamination. A copy of the document is in Appendix H. 7.6.5 Waste Disposal Current programs for drainage system maintenance involves removal of large pieces of debris by hand or with mechanical equipment on an as needed basis. Smaller debris and sediment are removed from the drainage system by use of a sewer jet vacuum truck. All debris and sediment removed during the process is collected and disposed of. The current procedures will be reviewed and new procedures will be developed. 7.6.6 Flood Management Project 7.6.7 Existing Ordinance The first step in the decision process for reviewing existing ordinances for possible modification to address stormwater issues will be to have the Town staff become thoroughly familiar with the purpose, goals and objectives of the SVVMP. Existing ordinances can then be reviewed and evaluated to determine if modification of the ordinances would address the stormwater management issues identified in the SWMP. Recommendations for change can be considered, the change drafted, presented to the Town Council for consideration, and if deemed appropriate by the Council, issued for public review and comment prior to adoption and implementation. 7.6.8 Other Evaluations No other aspects of the Town's operation were evaluated. 7.6.9 Decision Process The following were considered in developing the Town's program: maintenance activities, maintenance schedules, and long-term inspection procedures for structural and nonstructural stormwater controls to reduce floatables and other pollutants discharged from the storm sewer; controls for reducing or eliminating the discharge of pollutants from streets, roads, highways, parking lots, maintenance and storage yards, fleet or maintenance shops, salt/sand storage locations, procedures for properly disposing of waste removed from the storm sewers (such as accumulated sediments, floatables, and other debris); and ways to ensure that new flood management projects assess the impacts on water quality and examine existing projects for Pease Commission No. 212129 March 2012 Comprehensive Stormwater Management Program incorporating additional water quality protection devices or practices. Operation and maintenance will be an integral component of the stormwater management program. This measure is intended to improve the efficiency of these programs and require new programs where necessary. Properly developed and implemented operation and maintenance programs will reduce the risk of water quality problems. 7.6.10 Evaluation The effectiveness of many of the best management practices at removing pollutants from stormwater runoff will be difficult to quantify. However, the Town's emphasis will be on implementing the BMP's that eliminate the potential for pollution. The success of this minimum measure will be determined by the quantity of potential pollution sources that are identified, inventoried and eliminated. Pease Commission No. 212129 March 2012