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Home My WebLink About01c_NCS000250_SOIP Program Overview_2019NORTH CAROLINA Department of Transportation ROL Stormwater Outfall Inventory and Prioritization Program Overview Ryan M. Mullins, PE September 23-25, 2019 Permit Requirements Objectives: • Maintain the statewide NCDOT stormwater outfall inventory for the purpose of supporting other permit programs. • Maintain a stormwater outfall geospatial information system (GIS) data layer to map and prioritize sensitive water crossings. • Maintain a field inventory procedure to be used for NCDOT/DEMLR identified priority areas. Ab)(aa) Maintain a stormwater outfall inventory of existing stormwater outfalls to sensitive waters. NCDOT will maintain a GIS-based implicit stormwater outfall inventory to include outfalls from primary and secondary roadways. Include in the inventory implicit outfalls from The stormwater outfall inventory shall be updated newly completed construction projects. annually to include implicit outfalls from newly completed construction projects. Include outfalls for NCDOT industrial facilities The stormwater outfall inventory shall be updated in the inventory. annually to include changes or additions to previously inventoried NCDOT industrial facilities. Field outfall inventory procedure for priority areas. NCDOT will maintain the field outfall inventory procedure. The annual report shall document implementation of the procedure, identify future priority areas, and define a schedule for implementing the procedure within the identified priority areas. 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BCdy r crcax • ♦ ! • • • ♦ , • t 7 ,, • • ♦ •Aq° • -vim ♦ 1 �••� �' 1 :♦ a ►•�► erne` ♦ • • a fie, °� creek . ♦ - • •!• • 0 i • • • �. •N • "O�, _ • New Niu o i- a • ♦ • M a• • / •• • •JSTo �� • ♦ » ♦ •f • r QRF ° an R 31 T�i� rna�. a•• Ckn Qaka z . •.4 ♦ • • • • ♦ •► f 1 e ! • ♦• • • a • lb iouy springs Rdge • •• • • ♦ r • • • • • • • �• • • • c.b a♦• • •*• s • • • •�_ • nh• a • \r• • • ••••• • •• ♦ • •• • • • • • a ♦. • ♦�6 a • •• • G • • • • • r • •• • • ♦ i • r♦ •{r m • ate• �►• _ • VrNo�r Spnry ° r_ ♦ 1 • A •euc6ry�e.k •• • - • _ Gty of Raleigh, Fawn of Cary, State of Narth Cantina ��T, Esri_HERE, Garmin, USGS, NGA, ESA, 135D... 3 • Continuing to maintain an inventory of implicit outfalls across the state. These can be seen on NCDOVS Environmental Sensitivity Map (ESM) by selecting the implicit outfalls layer. • Industrial Outfalls and discharge points are also available in ESM by selecting the industrial outfalls layer. • The Implicit Outfalls layer was updated in March 2019, however, due to server upgrades, updates to ESM is pending. Implicit Outfalls 1171661 1181024 1181154 1161087 Industrial Outfalls and Discharge 588 601 Points Field Verified Outfalls 250 949 610 1327 629 1873 Field Inventory Procedures • FIP Procedures Manual and Outfall Identification Guidelines documents established. • FIP Procedures Manual updated in FY2015-2016 to include updates in new FIP software and hardware. Modified in FY2017-2018 with new ArcPad Instructions. • FIP Procedures updated in FY2015-2016 with protocol for identifying illicit discharges as part of a field inventory. Outiall Identifi atiun Guidelines N n�.e nr n.�b. xpw� p� ate. � nsss�—io fs §�lY Fy..1�rcYty. .y ft �.Vl -�� Illklt Ol.cleerw 9creenlno NanuY forWW4 MENMw...e 5 Field Inventory Collection Levels • Tier I — Discharge Point Identification: The primary data collection objective is to identify stormwater discharge points either within the ROW (Right -of -Way) or in some rare cases outside of the ROW. The inventory includes some basic attribution, source, mapping grade GPS, and photographs as appropriate. Tier I inventories are designed to comply with NPDES permit requirements as well as any applicable state stormwater rules requiring outfall identification. Tier I inventories are subdivided into three categories tailored to meet the specific information need within a given job work area. ❑ Tier I a — Identification of true outfalls to waters of the state at or within the ROW boundary (known as a NCDOT outfall). ❑ Tier I b — Identification of points where concentrated stormwater is exiting the ROW (known as a ROW discharge point) as well as any NCDOT outfalls present. ❑ Tier I c — Include the collection of Tier I b data plus the locations of outfalls to waters of the state outside of the ROW extending from ROW discharge points. M Tier I Examples Type 1 a Outfall Erislig Ditch Gfrrt�retl.3a -- Wafers or ltte scaoe E1�IYy ROW • o�ran _ artx-6orYInleL � Plpe Rani sarlaC fi - t - Ewing Ditch Wab0 0(13� Swot Er Lm ROW r OuVall _ .hrcnpnFlnlet - PIpe Y Type 1 b ROW Discharge -ype 1 c Outfall Exi'strg ❑fth GYve.r3.t8ntlge wwat S w rhea slam Exieana ROW ROVu Disenarpe Point _ "mowi iiea -pipe Reed Surface 7 Stormwater Collection Levels Cont. • Tier II — Conveyance system connectivity within the ROW The primary data collection objective is to identify where stormwater is coming from and where it is going within the boundaries of the ROW for a specified job work area. Tier II inventories include detailed attribution of the system, mapping grade GPS, and photographs as appropriate. • Tier III — Total system connectivity within a work area. In some instances it may be necessary to extend the inventory beyond the limits of the ROW. Tier III inventories include detailed attribution of the system, mapping grade GPS, and photographs as appropriate to define the connectivity of the entire drainage system within a study area. Tier II and III have the same level of attribution. The difference between a Tier II and Tier III is the job work area definition (for example, Tier III includes inventory outside the ROW). Field Inventory - Collections • Field Inventories have been completed in the following watersheds for compliance with program goals: 1. Southeast White Oak River Watershed —Tier III 2. Little Alamance Creek Watershed — Tier I and III 3. Lower Falls Lake Watershed — Tier 4. Upper Falls Lake Watershed — Tier 5. Lower Jordan Lake Watershed — Tier I 6. Upper Jordan Lake Watershed — Tier I E Southeast White Oak '•'�arr,1 f`oyr R� i A yQ ,. o r `� Wn4ibrn Par6 v 0— pt Cape Carteret try arch r;santl ❑r s hlte Oak '�,u �r Vam C'e nr — Loma v da c "04 J as n r .. � — a $ ow°a� 1160 n .. C94 °y Waterway L7r 10 Field Inventory - Little Alamance Creek Watershed apt F a i dss �.<. � Eae<<K .vn v � en. r j aie.. s. xn.n � u �• . NaR�,.,.. •.. n. 8 2 -. 1¢ a>.nu it � i ' f�� ~ e.� nn nir ... q a� iy g Lower Falls Lake Watershed — From NC50 to Intake at Falls of Neuse Road Implicit Outfalls - Primary Routes -MM.faa�M'M''u° Legend Implictl_Outralls_24k_Lower Falls Lake RTE_7_CLSS_CID Stream24k �'. IMe lictl_Outralls_24k_LJpper Falls Lake Interstate O Lewer_S,.Ih s • Implictl_Outralls_24k selection - INC Route O Falls_Lake_9oundary LRS_A res Secohdary Read ,al other values, U3 Route 12 Upper Falls Lake Watershed O.-V rIRC FR ox 0 ............ 47 Prospect Hil I 41 � 4g- N�� Bv m r Jl- Re Ai lop vj Rf Hill Car rtr«ot, d 13 Lower Jordan Lake Watershed z _5 14 ncdvt.gvv Im Mach son # •. Re ds+nlle - u i -nS MkWdl Buckingham ] f� S,snmerfieltl _ J yak R dge ■ ■ ■ 1. . K n sh l l e y■ + rr■ ■� ■ ;■ \ • r l3�rl4ngton ■ f • +1. ■ AVPba r 1 , . ' Greensboro• � �—� a•a iaT� �� ! '-�.•;' ■�rri1�■SOY■)* okm��4wllr rS^ ! d ! liigfi Pointf Liberty ! w • 1 a Asheboro •Sil: it'ti pit[ .t r,r .rrrrrrrrr.rrrrrrrrrrrrrrd�' r r••rr rrr �.r�rr:rr�rrrrrrrrrrr.�r� rtra.rrr..� �rrrrr wrirr rrrrrr�rrrr. Field Inventory — Hardware and Software • Over time software and hardware advancements have necessitated adjustments to the Field Inventory portion of the Outfall Inventory Program. • These adjustments have included procedural updates, software updates, and hardware updates. • These refinements have resulted in a more efficient Program. Yuan ArcPad 1IMM Collector + Survey123 A 16 Inventory Program — Process Improvement • As part of the process improvement the SOP Task Manager, Ryan Mullins successfully completed the Surface Water Identification Training and Certification (SWITC) class and received a "Certificate of Training." • This training has also been recommended for consultants utilized for field inventory work. Division of Water Resources DWR Ce f aeol rrafnl e N.rtR arol a ee menr Ryan Mullins memimmcema�d �+ae auacseluu� damanenaled wl>et:iiN ana pmt iency w rlem�mina me Pmemw olsurtase - eralas Aat requirsme appllcamn ds�les aBopbtl by ma N.G. Enwmmensl ManagerrranE Neural Rewusces pivison oewater Resources Commission br the pmpwlisn of ripariar hullers as drrmminetl by 15A NCHC 02B 0200. s�dace warerlae�M eo��rammq eM @rtlNcaclon Program IIIB, C11BC101 Division of Water Resourres r'e 2n, 20�5 030rA6�s T.K. oarc cenNicauon Number 17 Considerations for the Future • With the ever -changing pace at which software and hardware becomes obsolete, there will be a constant need to evaluate new technology for use in the FIP. • This will also necessitate the routine evaluation and update for the FIP Procedures Manual and the development of new tools for field inventory crews. • Assess lessons learned from Upper Jordan Lake Inventory using Collector and Survey123. • Utilize Collector and Survey123 for future field inventories. Questions? NCDOT Highway Storhj-w-,at%-,,,,,